17c1a000dSChao Yu // SPDX-License-Identifier: GPL-2.0 20a8165d7SJaegeuk Kim /* 3e05df3b1SJaegeuk Kim * fs/f2fs/node.c 4e05df3b1SJaegeuk Kim * 5e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6e05df3b1SJaegeuk Kim * http://www.samsung.com/ 7e05df3b1SJaegeuk Kim */ 8e05df3b1SJaegeuk Kim #include <linux/fs.h> 9e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 10e05df3b1SJaegeuk Kim #include <linux/mpage.h> 114034247aSNeilBrown #include <linux/sched/mm.h> 12e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 13e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 14e05df3b1SJaegeuk Kim #include <linux/swap.h> 15e05df3b1SJaegeuk Kim 16e05df3b1SJaegeuk Kim #include "f2fs.h" 17e05df3b1SJaegeuk Kim #include "node.h" 18e05df3b1SJaegeuk Kim #include "segment.h" 1987905682SYunlei He #include "xattr.h" 2052118743SDaeho Jeong #include "iostat.h" 2151dd6249SNamjae Jeon #include <trace/events/f2fs.h> 22e05df3b1SJaegeuk Kim 234d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 24f978f5a0SGu Zheng 25e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 26e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 27aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 2850fa53ecSChao Yu static struct kmem_cache *fsync_node_entry_slab; 29e05df3b1SJaegeuk Kim 30a4f843bdSJaegeuk Kim /* 31a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 32a4f843bdSJaegeuk Kim */ 334d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 34a4f843bdSJaegeuk Kim { 35a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 36a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 37dcbb4c10SJoe Perches f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.", 38a4f843bdSJaegeuk Kim __func__, nid); 3995fa90c9SChao Yu f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 4010f966bbSChao Yu return -EFSCORRUPTED; 41a4f843bdSJaegeuk Kim } 42a4f843bdSJaegeuk Kim return 0; 43a4f843bdSJaegeuk Kim } 44a4f843bdSJaegeuk Kim 454d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 46cdfc41c1SJaegeuk Kim { 476fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 48d6d2b491SSahitya Tummala struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 49cdfc41c1SJaegeuk Kim struct sysinfo val; 50e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 51cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 526fb03f3aSJaegeuk Kim bool res = false; 53cdfc41c1SJaegeuk Kim 54d6d2b491SSahitya Tummala if (!nm_i) 55d6d2b491SSahitya Tummala return true; 56d6d2b491SSahitya Tummala 57cdfc41c1SJaegeuk Kim si_meminfo(&val); 58e5e7ea3cSJaegeuk Kim 59e5e7ea3cSJaegeuk Kim /* only uses low memory */ 60e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 61e5e7ea3cSJaegeuk Kim 62429511cdSChao Yu /* 6371644dffSJaegeuk Kim * give 25%, 25%, 50%, 50%, 25%, 25% memory for each components respectively 64429511cdSChao Yu */ 656fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 669a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 67b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 68e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 696fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 70a95ba66aSJaegeuk Kim mem_size = (nm_i->nat_cnt[TOTAL_NAT] * 71a95ba66aSJaegeuk Kim sizeof(struct nat_entry)) >> PAGE_SHIFT; 72e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 73e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 74e589c2c4SJaegeuk Kim res = false; 75a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 76a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 77a1257023SJaegeuk Kim return false; 78a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 79a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 80e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 81e5e7ea3cSJaegeuk Kim int i; 82e5e7ea3cSJaegeuk Kim 8339d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 848f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 858f73cbb7SKinglong Mee sizeof(struct ino_entry); 868f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 87e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 8871644dffSJaegeuk Kim } else if (type == READ_EXTENT_CACHE || type == AGE_EXTENT_CACHE) { 8971644dffSJaegeuk Kim enum extent_type etype = type == READ_EXTENT_CACHE ? 9071644dffSJaegeuk Kim EX_READ : EX_BLOCK_AGE; 9171644dffSJaegeuk Kim struct extent_tree_info *eti = &sbi->extent_tree[etype]; 92e7547dacSJaegeuk Kim 93e7547dacSJaegeuk Kim mem_size = (atomic_read(&eti->total_ext_tree) * 947441ccefSJaegeuk Kim sizeof(struct extent_tree) + 95e7547dacSJaegeuk Kim atomic_read(&eti->total_ext_node) * 9609cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 9771644dffSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 98d6d2b491SSahitya Tummala } else if (type == DISCARD_CACHE) { 99d6d2b491SSahitya Tummala mem_size = (atomic_read(&dcc->discard_cmd_cnt) * 100d6d2b491SSahitya Tummala sizeof(struct discard_cmd)) >> PAGE_SHIFT; 101d6d2b491SSahitya Tummala res = mem_size < (avail_ram * nm_i->ram_thresh / 100); 1026ce19affSChao Yu } else if (type == COMPRESS_PAGE) { 1036ce19affSChao Yu #ifdef CONFIG_F2FS_FS_COMPRESSION 1046ce19affSChao Yu unsigned long free_ram = val.freeram; 1056ce19affSChao Yu 1066ce19affSChao Yu /* 1076ce19affSChao Yu * free memory is lower than watermark or cached page count 1086ce19affSChao Yu * exceed threshold, deny caching compress page. 1096ce19affSChao Yu */ 1106ce19affSChao Yu res = (free_ram > avail_ram * sbi->compress_watermark / 100) && 1116ce19affSChao Yu (COMPRESS_MAPPING(sbi)->nrpages < 1126ce19affSChao Yu free_ram * sbi->compress_percent / 100); 1136ce19affSChao Yu #else 1146ce19affSChao Yu res = false; 1156ce19affSChao Yu #endif 1161e84371fSJaegeuk Kim } else { 1171663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 1181663cae4SJaegeuk Kim return true; 1196fb03f3aSJaegeuk Kim } 1206fb03f3aSJaegeuk Kim return res; 121cdfc41c1SJaegeuk Kim } 122cdfc41c1SJaegeuk Kim 123e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 124e05df3b1SJaegeuk Kim { 125e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1265ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 127e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 128aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 129e05df3b1SJaegeuk Kim } 130e05df3b1SJaegeuk Kim ClearPageUptodate(page); 131e05df3b1SJaegeuk Kim } 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 134e05df3b1SJaegeuk Kim { 1353acc4522SJaegeuk Kim return f2fs_get_meta_page_retry(sbi, current_nat_addr(sbi, nid)); 136e05df3b1SJaegeuk Kim } 137e05df3b1SJaegeuk Kim 138e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 139e05df3b1SJaegeuk Kim { 140e05df3b1SJaegeuk Kim struct page *src_page; 141e05df3b1SJaegeuk Kim struct page *dst_page; 142e05df3b1SJaegeuk Kim pgoff_t dst_off; 143e05df3b1SJaegeuk Kim void *src_addr; 144e05df3b1SJaegeuk Kim void *dst_addr; 145e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 146e05df3b1SJaegeuk Kim 14780551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 148e05df3b1SJaegeuk Kim 149e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 15080551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 151edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 152edc55aafSJaegeuk Kim return src_page; 1534d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1549850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 155e05df3b1SJaegeuk Kim 156e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 157e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 15809cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 159e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 160e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 161e05df3b1SJaegeuk Kim 162e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 163e05df3b1SJaegeuk Kim 164e05df3b1SJaegeuk Kim return dst_page; 165e05df3b1SJaegeuk Kim } 166e05df3b1SJaegeuk Kim 16732410577SChao Yu static struct nat_entry *__alloc_nat_entry(struct f2fs_sb_info *sbi, 16832410577SChao Yu nid_t nid, bool no_fail) 16912f9ef37SYunlei He { 17012f9ef37SYunlei He struct nat_entry *new; 17112f9ef37SYunlei He 17232410577SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, 17332410577SChao Yu GFP_F2FS_ZERO, no_fail, sbi); 17412f9ef37SYunlei He if (new) { 17512f9ef37SYunlei He nat_set_nid(new, nid); 17612f9ef37SYunlei He nat_reset_flag(new); 17712f9ef37SYunlei He } 17812f9ef37SYunlei He return new; 17912f9ef37SYunlei He } 18012f9ef37SYunlei He 18112f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 18212f9ef37SYunlei He { 18312f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 18412f9ef37SYunlei He } 18512f9ef37SYunlei He 18612f9ef37SYunlei He /* must be locked by nat_tree_lock */ 18712f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 18812f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 18912f9ef37SYunlei He { 19012f9ef37SYunlei He if (no_fail) 19112f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 19212f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 19312f9ef37SYunlei He return NULL; 19412f9ef37SYunlei He 19512f9ef37SYunlei He if (raw_ne) 19612f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 19722969158SChao Yu 19822969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19912f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 20022969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 20122969158SChao Yu 202a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]++; 203a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 20412f9ef37SYunlei He return ne; 20512f9ef37SYunlei He } 20612f9ef37SYunlei He 207e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 208e05df3b1SJaegeuk Kim { 20922969158SChao Yu struct nat_entry *ne; 21022969158SChao Yu 21122969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 21222969158SChao Yu 21322969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 21422969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 21522969158SChao Yu spin_lock(&nm_i->nat_list_lock); 21622969158SChao Yu if (!list_empty(&ne->list)) 21722969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 21822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 21922969158SChao Yu } 22022969158SChao Yu 22122969158SChao Yu return ne; 222e05df3b1SJaegeuk Kim } 223e05df3b1SJaegeuk Kim 224e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 225e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 226e05df3b1SJaegeuk Kim { 227e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 228e05df3b1SJaegeuk Kim } 229e05df3b1SJaegeuk Kim 230e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 231e05df3b1SJaegeuk Kim { 232e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 233a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]--; 234a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 23512f9ef37SYunlei He __free_nat_entry(e); 236e05df3b1SJaegeuk Kim } 237e05df3b1SJaegeuk Kim 238780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 239309cc2b6SJaegeuk Kim struct nat_entry *ne) 240309cc2b6SJaegeuk Kim { 241309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 242309cc2b6SJaegeuk Kim struct nat_entry_set *head; 243309cc2b6SJaegeuk Kim 244309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 245309cc2b6SJaegeuk Kim if (!head) { 24632410577SChao Yu head = f2fs_kmem_cache_alloc(nat_entry_set_slab, 24732410577SChao Yu GFP_NOFS, true, NULL); 248309cc2b6SJaegeuk Kim 249309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 250309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 251309cc2b6SJaegeuk Kim head->set = set; 252309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2539be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 254309cc2b6SJaegeuk Kim } 255780de47cSChao Yu return head; 256780de47cSChao Yu } 257780de47cSChao Yu 258780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 259780de47cSChao Yu struct nat_entry *ne) 260780de47cSChao Yu { 261780de47cSChao Yu struct nat_entry_set *head; 262780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 263780de47cSChao Yu 264780de47cSChao Yu if (!new_ne) 265780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 266780de47cSChao Yu 267780de47cSChao Yu /* 268780de47cSChao Yu * update entry_cnt in below condition: 269780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 270780de47cSChao Yu * 2. update old block address to new one; 271780de47cSChao Yu */ 272780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 273780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 274780de47cSChao Yu head->entry_cnt++; 275780de47cSChao Yu 276780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 277febeca6dSChao Yu 278febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 279febeca6dSChao Yu goto refresh_list; 280febeca6dSChao Yu 281a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]++; 282a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 283309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 284febeca6dSChao Yu refresh_list: 28522969158SChao Yu spin_lock(&nm_i->nat_list_lock); 286780de47cSChao Yu if (new_ne) 287febeca6dSChao Yu list_del_init(&ne->list); 288febeca6dSChao Yu else 289febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 29022969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 291309cc2b6SJaegeuk Kim } 292309cc2b6SJaegeuk Kim 293309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2940b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 295309cc2b6SJaegeuk Kim { 29622969158SChao Yu spin_lock(&nm_i->nat_list_lock); 297309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 29822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 29922969158SChao Yu 300309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 3010b28b71eSKinglong Mee set->entry_cnt--; 302a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]--; 303a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 304309cc2b6SJaegeuk Kim } 305309cc2b6SJaegeuk Kim 306309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 307309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 308309cc2b6SJaegeuk Kim { 309309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 310309cc2b6SJaegeuk Kim start, nr); 311309cc2b6SJaegeuk Kim } 312309cc2b6SJaegeuk Kim 31350fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 31450fa53ecSChao Yu { 31550fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 31650fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 31750fa53ecSChao Yu } 31850fa53ecSChao Yu 31950fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 32050fa53ecSChao Yu { 32150fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 32250fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 32350fa53ecSChao Yu sbi->fsync_seg_id = 0; 32450fa53ecSChao Yu sbi->fsync_node_num = 0; 32550fa53ecSChao Yu } 32650fa53ecSChao Yu 32750fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 32850fa53ecSChao Yu struct page *page) 32950fa53ecSChao Yu { 33050fa53ecSChao Yu struct fsync_node_entry *fn; 33150fa53ecSChao Yu unsigned long flags; 33250fa53ecSChao Yu unsigned int seq_id; 33350fa53ecSChao Yu 33432410577SChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, 33532410577SChao Yu GFP_NOFS, true, NULL); 33650fa53ecSChao Yu 33750fa53ecSChao Yu get_page(page); 33850fa53ecSChao Yu fn->page = page; 33950fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 34050fa53ecSChao Yu 34150fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 34250fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 34350fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 34450fa53ecSChao Yu seq_id = fn->seq_id; 34550fa53ecSChao Yu sbi->fsync_node_num++; 34650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34750fa53ecSChao Yu 34850fa53ecSChao Yu return seq_id; 34950fa53ecSChao Yu } 35050fa53ecSChao Yu 35150fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 35250fa53ecSChao Yu { 35350fa53ecSChao Yu struct fsync_node_entry *fn; 35450fa53ecSChao Yu unsigned long flags; 35550fa53ecSChao Yu 35650fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 35750fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 35850fa53ecSChao Yu if (fn->page == page) { 35950fa53ecSChao Yu list_del(&fn->list); 36050fa53ecSChao Yu sbi->fsync_node_num--; 36150fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36250fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 36350fa53ecSChao Yu put_page(page); 36450fa53ecSChao Yu return; 36550fa53ecSChao Yu } 36650fa53ecSChao Yu } 36750fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36850fa53ecSChao Yu f2fs_bug_on(sbi, 1); 36950fa53ecSChao Yu } 37050fa53ecSChao Yu 37150fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 37250fa53ecSChao Yu { 37350fa53ecSChao Yu unsigned long flags; 37450fa53ecSChao Yu 37550fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 37650fa53ecSChao Yu sbi->fsync_seg_id = 0; 37750fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 37850fa53ecSChao Yu } 37950fa53ecSChao Yu 3804d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3812dcf51abSJaegeuk Kim { 3822dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3832dcf51abSJaegeuk Kim struct nat_entry *e; 3842dcf51abSJaegeuk Kim bool need = false; 3852dcf51abSJaegeuk Kim 386e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 3872dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3882dcf51abSJaegeuk Kim if (e) { 3892dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3902dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3912dcf51abSJaegeuk Kim need = true; 3922dcf51abSJaegeuk Kim } 393e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 3942dcf51abSJaegeuk Kim return need; 3952dcf51abSJaegeuk Kim } 3962dcf51abSJaegeuk Kim 3974d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 398e05df3b1SJaegeuk Kim { 399e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 400e05df3b1SJaegeuk Kim struct nat_entry *e; 40188bd02c9SJaegeuk Kim bool is_cp = true; 402e05df3b1SJaegeuk Kim 403e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 404e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 4057ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 40688bd02c9SJaegeuk Kim is_cp = false; 407e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 408e05df3b1SJaegeuk Kim return is_cp; 409e05df3b1SJaegeuk Kim } 410e05df3b1SJaegeuk Kim 4114d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 412b6fe5873SJaegeuk Kim { 413b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 414b6fe5873SJaegeuk Kim struct nat_entry *e; 41588bd02c9SJaegeuk Kim bool need_update = true; 416b6fe5873SJaegeuk Kim 417e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 41888bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 41988bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 42088bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 42188bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 42288bd02c9SJaegeuk Kim need_update = false; 423e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 42488bd02c9SJaegeuk Kim return need_update; 425b6fe5873SJaegeuk Kim } 426b6fe5873SJaegeuk Kim 42712f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4281515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 429e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 430e05df3b1SJaegeuk Kim { 4311515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 43212f9ef37SYunlei He struct nat_entry *new, *e; 4339be32d72SJaegeuk Kim 4340df035c7SJaegeuk Kim /* Let's mitigate lock contention of nat_tree_lock during checkpoint */ 435e4544b63STim Murray if (f2fs_rwsem_is_locked(&sbi->cp_global_sem)) 4360df035c7SJaegeuk Kim return; 4370df035c7SJaegeuk Kim 43832410577SChao Yu new = __alloc_nat_entry(sbi, nid, false); 43912f9ef37SYunlei He if (!new) 44012f9ef37SYunlei He return; 44112f9ef37SYunlei He 442e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 443e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 44412f9ef37SYunlei He if (!e) 44512f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 44612f9ef37SYunlei He else 4470c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4480c0b471eSEric Biggers nat_get_blkaddr(e) != 4490c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4501515aef0SChao Yu nat_get_version(e) != ne->version); 451e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 45212f9ef37SYunlei He if (e != new) 45312f9ef37SYunlei He __free_nat_entry(new); 454e05df3b1SJaegeuk Kim } 455e05df3b1SJaegeuk Kim 456e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 457479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 458e05df3b1SJaegeuk Kim { 459e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 460e05df3b1SJaegeuk Kim struct nat_entry *e; 46132410577SChao Yu struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true); 4629be32d72SJaegeuk Kim 463e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 464e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 465e05df3b1SJaegeuk Kim if (!e) { 46612f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4675c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4689850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 469e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 470e05df3b1SJaegeuk Kim /* 471e05df3b1SJaegeuk Kim * when nid is reallocated, 472e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 473e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 474e05df3b1SJaegeuk Kim */ 4755c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4769850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 477e05df3b1SJaegeuk Kim } 47812f9ef37SYunlei He /* let's free early to reduce memory consumption */ 47912f9ef37SYunlei He if (e != new) 48012f9ef37SYunlei He __free_nat_entry(new); 481e05df3b1SJaegeuk Kim 482e05df3b1SJaegeuk Kim /* sanity check */ 4839850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4849850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 485e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4869850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 487e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 48893770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 489e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 490e05df3b1SJaegeuk Kim 491e1c42045Sarter97 /* increment version no as node is removed */ 492e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 493e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 4945f029c04SYi Zhuang 495e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 496e05df3b1SJaegeuk Kim } 497e05df3b1SJaegeuk Kim 498e05df3b1SJaegeuk Kim /* change address */ 499e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 50093770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 50188bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 502e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 503479f40c4SJaegeuk Kim 504479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 505d5b692b7SChao Yu if (ni->nid != ni->ino) 506479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 50788bd02c9SJaegeuk Kim if (e) { 50888bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 50988bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 51088bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 51188bd02c9SJaegeuk Kim } 512e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 513e05df3b1SJaegeuk Kim } 514e05df3b1SJaegeuk Kim 5154d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 516e05df3b1SJaegeuk Kim { 517e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 5181b38dc8eSJaegeuk Kim int nr = nr_shrink; 519e05df3b1SJaegeuk Kim 520e4544b63STim Murray if (!f2fs_down_write_trylock(&nm_i->nat_tree_lock)) 521b873b798SJaegeuk Kim return 0; 522e05df3b1SJaegeuk Kim 52322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 52422969158SChao Yu while (nr_shrink) { 525e05df3b1SJaegeuk Kim struct nat_entry *ne; 52622969158SChao Yu 52722969158SChao Yu if (list_empty(&nm_i->nat_entries)) 52822969158SChao Yu break; 52922969158SChao Yu 530e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 531e05df3b1SJaegeuk Kim struct nat_entry, list); 53222969158SChao Yu list_del(&ne->list); 53322969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53422969158SChao Yu 535e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 536e05df3b1SJaegeuk Kim nr_shrink--; 53722969158SChao Yu 53822969158SChao Yu spin_lock(&nm_i->nat_list_lock); 539e05df3b1SJaegeuk Kim } 54022969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 54122969158SChao Yu 542e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 5431b38dc8eSJaegeuk Kim return nr - nr_shrink; 544e05df3b1SJaegeuk Kim } 545e05df3b1SJaegeuk Kim 5467735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 547a9419b63SJaegeuk Kim struct node_info *ni, bool checkpoint_context) 548e05df3b1SJaegeuk Kim { 549e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 550e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 551b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 552e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 553e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 554e05df3b1SJaegeuk Kim struct page *page = NULL; 555e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 556e05df3b1SJaegeuk Kim struct nat_entry *e; 55766a82d1fSYunlei He pgoff_t index; 55893770ab7SChao Yu block_t blkaddr; 559e05df3b1SJaegeuk Kim int i; 560e05df3b1SJaegeuk Kim 561e05df3b1SJaegeuk Kim ni->nid = nid; 5622eeb0dceSJaegeuk Kim retry: 563e05df3b1SJaegeuk Kim /* Check nat cache */ 564e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 565e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 566e05df3b1SJaegeuk Kim if (e) { 567e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 568e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 569e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 570e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5717735730dSChao Yu return 0; 5721515aef0SChao Yu } 573e05df3b1SJaegeuk Kim 5742eeb0dceSJaegeuk Kim /* 5752eeb0dceSJaegeuk Kim * Check current segment summary by trying to grab journal_rwsem first. 5762eeb0dceSJaegeuk Kim * This sem is on the critical path on the checkpoint requiring the above 5772eeb0dceSJaegeuk Kim * nat_tree_lock. Therefore, we should retry, if we failed to grab here 5782eeb0dceSJaegeuk Kim * while not bothering checkpoint. 5792eeb0dceSJaegeuk Kim */ 580e4544b63STim Murray if (!f2fs_rwsem_is_locked(&sbi->cp_global_sem) || checkpoint_context) { 581b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 582e4544b63STim Murray } else if (f2fs_rwsem_is_contended(&nm_i->nat_tree_lock) || 583a9419b63SJaegeuk Kim !down_read_trylock(&curseg->journal_rwsem)) { 584e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5852eeb0dceSJaegeuk Kim goto retry; 5862eeb0dceSJaegeuk Kim } 5872eeb0dceSJaegeuk Kim 5884d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 589e05df3b1SJaegeuk Kim if (i >= 0) { 590dfc08a12SChao Yu ne = nat_in_journal(journal, i); 591e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 592e05df3b1SJaegeuk Kim } 593b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 59466a82d1fSYunlei He if (i >= 0) { 595e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 596e05df3b1SJaegeuk Kim goto cache; 59766a82d1fSYunlei He } 598e05df3b1SJaegeuk Kim 599e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 60066a82d1fSYunlei He index = current_nat_addr(sbi, nid); 601e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 60266a82d1fSYunlei He 6034d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 6047735730dSChao Yu if (IS_ERR(page)) 6057735730dSChao Yu return PTR_ERR(page); 6067735730dSChao Yu 607e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 608e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 609e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 610e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 611e05df3b1SJaegeuk Kim cache: 61293770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 61393770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 61493770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 61593770ab7SChao Yu return -EFAULT; 61693770ab7SChao Yu 617e05df3b1SJaegeuk Kim /* cache nat entry */ 6181515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 6197735730dSChao Yu return 0; 620e05df3b1SJaegeuk Kim } 621e05df3b1SJaegeuk Kim 62279344efbSJaegeuk Kim /* 62379344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 62479344efbSJaegeuk Kim */ 6254d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 62679344efbSJaegeuk Kim { 62779344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 62879344efbSJaegeuk Kim struct blk_plug plug; 62979344efbSJaegeuk Kim int i, end; 63079344efbSJaegeuk Kim nid_t nid; 63179344efbSJaegeuk Kim 63279344efbSJaegeuk Kim blk_start_plug(&plug); 63379344efbSJaegeuk Kim 63479344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 63579344efbSJaegeuk Kim end = start + n; 63679344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 63779344efbSJaegeuk Kim for (i = start; i < end; i++) { 63879344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6394d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 64079344efbSJaegeuk Kim } 64179344efbSJaegeuk Kim 64279344efbSJaegeuk Kim blk_finish_plug(&plug); 64379344efbSJaegeuk Kim } 64479344efbSJaegeuk Kim 6454d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6463cf45747SChao Yu { 6473cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 648d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 649d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 650d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6513cf45747SChao Yu int cur_level = dn->cur_level; 6523cf45747SChao Yu int max_level = dn->max_level; 6533cf45747SChao Yu pgoff_t base = 0; 6543cf45747SChao Yu 6553cf45747SChao Yu if (!dn->max_level) 6563cf45747SChao Yu return pgofs + 1; 6573cf45747SChao Yu 6583cf45747SChao Yu while (max_level-- > cur_level) 6593cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6603cf45747SChao Yu 6613cf45747SChao Yu switch (dn->max_level) { 6623cf45747SChao Yu case 3: 6633cf45747SChao Yu base += 2 * indirect_blks; 664df561f66SGustavo A. R. Silva fallthrough; 6653cf45747SChao Yu case 2: 6663cf45747SChao Yu base += 2 * direct_blks; 667df561f66SGustavo A. R. Silva fallthrough; 6683cf45747SChao Yu case 1: 6693cf45747SChao Yu base += direct_index; 6703cf45747SChao Yu break; 6713cf45747SChao Yu default: 6723cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6733cf45747SChao Yu } 6743cf45747SChao Yu 6753cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6763cf45747SChao Yu } 6773cf45747SChao Yu 6780a8165d7SJaegeuk Kim /* 679e05df3b1SJaegeuk Kim * The maximum depth is four. 680e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 681e05df3b1SJaegeuk Kim */ 68281ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 683de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 684e05df3b1SJaegeuk Kim { 68581ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 686d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 687e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 688d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 689e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 690e05df3b1SJaegeuk Kim int n = 0; 691e05df3b1SJaegeuk Kim int level = 0; 692e05df3b1SJaegeuk Kim 693e05df3b1SJaegeuk Kim noffset[0] = 0; 694e05df3b1SJaegeuk Kim 695e05df3b1SJaegeuk Kim if (block < direct_index) { 69625c0a6e5SNamjae Jeon offset[n] = block; 697e05df3b1SJaegeuk Kim goto got; 698e05df3b1SJaegeuk Kim } 699e05df3b1SJaegeuk Kim block -= direct_index; 700e05df3b1SJaegeuk Kim if (block < direct_blks) { 701e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 702e05df3b1SJaegeuk Kim noffset[n] = 1; 70325c0a6e5SNamjae Jeon offset[n] = block; 704e05df3b1SJaegeuk Kim level = 1; 705e05df3b1SJaegeuk Kim goto got; 706e05df3b1SJaegeuk Kim } 707e05df3b1SJaegeuk Kim block -= direct_blks; 708e05df3b1SJaegeuk Kim if (block < direct_blks) { 709e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 710e05df3b1SJaegeuk Kim noffset[n] = 2; 71125c0a6e5SNamjae Jeon offset[n] = block; 712e05df3b1SJaegeuk Kim level = 1; 713e05df3b1SJaegeuk Kim goto got; 714e05df3b1SJaegeuk Kim } 715e05df3b1SJaegeuk Kim block -= direct_blks; 716e05df3b1SJaegeuk Kim if (block < indirect_blks) { 717e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 718e05df3b1SJaegeuk Kim noffset[n] = 3; 719e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 720e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 72125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 722e05df3b1SJaegeuk Kim level = 2; 723e05df3b1SJaegeuk Kim goto got; 724e05df3b1SJaegeuk Kim } 725e05df3b1SJaegeuk Kim block -= indirect_blks; 726e05df3b1SJaegeuk Kim if (block < indirect_blks) { 727e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 728e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 729e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 730e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 73125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 732e05df3b1SJaegeuk Kim level = 2; 733e05df3b1SJaegeuk Kim goto got; 734e05df3b1SJaegeuk Kim } 735e05df3b1SJaegeuk Kim block -= indirect_blks; 736e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 737e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 738e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 739e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 740e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 741e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 742e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 743e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 744e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 745e05df3b1SJaegeuk Kim offset[n - 1]; 74625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 747e05df3b1SJaegeuk Kim level = 3; 748e05df3b1SJaegeuk Kim goto got; 749e05df3b1SJaegeuk Kim } else { 750adb6dc19SJaegeuk Kim return -E2BIG; 751e05df3b1SJaegeuk Kim } 752e05df3b1SJaegeuk Kim got: 753e05df3b1SJaegeuk Kim return level; 754e05df3b1SJaegeuk Kim } 755e05df3b1SJaegeuk Kim 756e05df3b1SJaegeuk Kim /* 757e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7584f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7597a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 760e05df3b1SJaegeuk Kim */ 7614d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 762e05df3b1SJaegeuk Kim { 7634081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 764e05df3b1SJaegeuk Kim struct page *npage[4]; 765f1a3b98eSJaegeuk Kim struct page *parent = NULL; 766e05df3b1SJaegeuk Kim int offset[4]; 767e05df3b1SJaegeuk Kim unsigned int noffset[4]; 768e05df3b1SJaegeuk Kim nid_t nids[4]; 7693cf45747SChao Yu int level, i = 0; 770e05df3b1SJaegeuk Kim int err = 0; 771e05df3b1SJaegeuk Kim 77281ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 773adb6dc19SJaegeuk Kim if (level < 0) 774adb6dc19SJaegeuk Kim return level; 775e05df3b1SJaegeuk Kim 776e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7771646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7781646cfacSJaegeuk Kim 7791646cfacSJaegeuk Kim if (!npage[0]) { 7804d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 781e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 782e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7831646cfacSJaegeuk Kim } 784f1a3b98eSJaegeuk Kim 785f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 786f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 78776629165SJaegeuk Kim err = -ENOENT; 788f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 789f1a3b98eSJaegeuk Kim goto release_out; 790f1a3b98eSJaegeuk Kim } 791f1a3b98eSJaegeuk Kim 792e05df3b1SJaegeuk Kim parent = npage[0]; 79352c2db3fSChangman Lee if (level != 0) 794e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 795e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 796e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 797e05df3b1SJaegeuk Kim 798e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 799e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 800e05df3b1SJaegeuk Kim bool done = false; 801e05df3b1SJaegeuk Kim 802266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 803e05df3b1SJaegeuk Kim /* alloc new node */ 8044d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 805e05df3b1SJaegeuk Kim err = -ENOSPC; 806e05df3b1SJaegeuk Kim goto release_pages; 807e05df3b1SJaegeuk Kim } 808e05df3b1SJaegeuk Kim 809e05df3b1SJaegeuk Kim dn->nid = nids[i]; 8104d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 811e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 8124d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 813e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 814e05df3b1SJaegeuk Kim goto release_pages; 815e05df3b1SJaegeuk Kim } 816e05df3b1SJaegeuk Kim 817e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 8184d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 819e05df3b1SJaegeuk Kim done = true; 820266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 8214d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 822e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 823e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 824e05df3b1SJaegeuk Kim goto release_pages; 825e05df3b1SJaegeuk Kim } 826e05df3b1SJaegeuk Kim done = true; 827e05df3b1SJaegeuk Kim } 828e05df3b1SJaegeuk Kim if (i == 1) { 829e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 830e05df3b1SJaegeuk Kim unlock_page(parent); 831e05df3b1SJaegeuk Kim } else { 832e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 833e05df3b1SJaegeuk Kim } 834e05df3b1SJaegeuk Kim 835e05df3b1SJaegeuk Kim if (!done) { 8364d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 837e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 838e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 839e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 840e05df3b1SJaegeuk Kim goto release_out; 841e05df3b1SJaegeuk Kim } 842e05df3b1SJaegeuk Kim } 843e05df3b1SJaegeuk Kim if (i < level) { 844e05df3b1SJaegeuk Kim parent = npage[i]; 845e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 846e05df3b1SJaegeuk Kim } 847e05df3b1SJaegeuk Kim } 848e05df3b1SJaegeuk Kim dn->nid = nids[level]; 849e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 850e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 851a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 85294afd6d6SChao Yu 85394afd6d6SChao Yu if (is_inode_flag_set(dn->inode, FI_COMPRESSED_FILE) && 85494afd6d6SChao Yu f2fs_sb_has_readonly(sbi)) { 85594afd6d6SChao Yu unsigned int c_len = f2fs_cluster_blocks_are_contiguous(dn); 85694afd6d6SChao Yu block_t blkaddr; 85794afd6d6SChao Yu 85894afd6d6SChao Yu if (!c_len) 85994afd6d6SChao Yu goto out; 86094afd6d6SChao Yu 86194afd6d6SChao Yu blkaddr = f2fs_data_blkaddr(dn); 86294afd6d6SChao Yu if (blkaddr == COMPRESS_ADDR) 86394afd6d6SChao Yu blkaddr = data_blkaddr(dn->inode, dn->node_page, 86494afd6d6SChao Yu dn->ofs_in_node + 1); 86594afd6d6SChao Yu 866e7547dacSJaegeuk Kim f2fs_update_read_extent_tree_range_compressed(dn->inode, 86794afd6d6SChao Yu index, blkaddr, 86894afd6d6SChao Yu F2FS_I(dn->inode)->i_cluster_size, 86994afd6d6SChao Yu c_len); 87094afd6d6SChao Yu } 87194afd6d6SChao Yu out: 872e05df3b1SJaegeuk Kim return 0; 873e05df3b1SJaegeuk Kim 874e05df3b1SJaegeuk Kim release_pages: 875e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 876e05df3b1SJaegeuk Kim if (i > 1) 877e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 878e05df3b1SJaegeuk Kim release_out: 879e05df3b1SJaegeuk Kim dn->inode_page = NULL; 880e05df3b1SJaegeuk Kim dn->node_page = NULL; 8813cf45747SChao Yu if (err == -ENOENT) { 8823cf45747SChao Yu dn->cur_level = i; 8833cf45747SChao Yu dn->max_level = level; 8840a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8853cf45747SChao Yu } 886e05df3b1SJaegeuk Kim return err; 887e05df3b1SJaegeuk Kim } 888e05df3b1SJaegeuk Kim 8897735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 890e05df3b1SJaegeuk Kim { 8914081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 892e05df3b1SJaegeuk Kim struct node_info ni; 8937735730dSChao Yu int err; 8940ea295ddSPan Bian pgoff_t index; 895e05df3b1SJaegeuk Kim 896a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &ni, false); 8977735730dSChao Yu if (err) 8987735730dSChao Yu return err; 899e05df3b1SJaegeuk Kim 900e05df3b1SJaegeuk Kim /* Deallocate node address */ 9014d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 902000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 903479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 904e05df3b1SJaegeuk Kim 905e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 9064d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 907e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 9080f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 909e05df3b1SJaegeuk Kim } 910000519f2SChao Yu 911e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 912caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 913e05df3b1SJaegeuk Kim 9140ea295ddSPan Bian index = dn->node_page->index; 915e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 916bf39c00aSJaegeuk Kim 917bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 9180ea295ddSPan Bian index, index); 919bf39c00aSJaegeuk Kim 920e05df3b1SJaegeuk Kim dn->node_page = NULL; 92151dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 9227735730dSChao Yu 9237735730dSChao Yu return 0; 924e05df3b1SJaegeuk Kim } 925e05df3b1SJaegeuk Kim 926e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 927e05df3b1SJaegeuk Kim { 928a6ec8378SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 929e05df3b1SJaegeuk Kim struct page *page; 9307735730dSChao Yu int err; 931e05df3b1SJaegeuk Kim 932e05df3b1SJaegeuk Kim if (dn->nid == 0) 933e05df3b1SJaegeuk Kim return 1; 934e05df3b1SJaegeuk Kim 935e05df3b1SJaegeuk Kim /* get direct node */ 936a6ec8378SChao Yu page = f2fs_get_node_page(sbi, dn->nid); 93745586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 938e05df3b1SJaegeuk Kim return 1; 939e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 940e05df3b1SJaegeuk Kim return PTR_ERR(page); 941e05df3b1SJaegeuk Kim 942a6ec8378SChao Yu if (IS_INODE(page) || ino_of_node(page) != dn->inode->i_ino) { 943a6ec8378SChao Yu f2fs_err(sbi, "incorrect node reference, ino: %lu, nid: %u, ino_of_node: %u", 944a6ec8378SChao Yu dn->inode->i_ino, dn->nid, ino_of_node(page)); 945a6ec8378SChao Yu set_sbi_flag(sbi, SBI_NEED_FSCK); 946a6ec8378SChao Yu f2fs_handle_error(sbi, ERROR_INVALID_NODE_REFERENCE); 947a6ec8378SChao Yu f2fs_put_page(page, 1); 948a6ec8378SChao Yu return -EFSCORRUPTED; 949a6ec8378SChao Yu } 950a6ec8378SChao Yu 951e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 952e05df3b1SJaegeuk Kim dn->node_page = page; 953e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 954a6ec8378SChao Yu f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode)); 9557735730dSChao Yu err = truncate_node(dn); 9560135c482SChao Yu if (err) { 9570135c482SChao Yu f2fs_put_page(page, 1); 9587735730dSChao Yu return err; 9590135c482SChao Yu } 9607735730dSChao Yu 961e05df3b1SJaegeuk Kim return 1; 962e05df3b1SJaegeuk Kim } 963e05df3b1SJaegeuk Kim 964e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 965e05df3b1SJaegeuk Kim int ofs, int depth) 966e05df3b1SJaegeuk Kim { 967e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 968e05df3b1SJaegeuk Kim struct page *page; 969e05df3b1SJaegeuk Kim struct f2fs_node *rn; 970e05df3b1SJaegeuk Kim nid_t child_nid; 971e05df3b1SJaegeuk Kim unsigned int child_nofs; 972e05df3b1SJaegeuk Kim int freed = 0; 973e05df3b1SJaegeuk Kim int i, ret; 974e05df3b1SJaegeuk Kim 975e05df3b1SJaegeuk Kim if (dn->nid == 0) 976e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 977e05df3b1SJaegeuk Kim 97851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 97951dd6249SNamjae Jeon 9804d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 98151dd6249SNamjae Jeon if (IS_ERR(page)) { 98251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 983e05df3b1SJaegeuk Kim return PTR_ERR(page); 98451dd6249SNamjae Jeon } 985e05df3b1SJaegeuk Kim 9864d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 98779344efbSJaegeuk Kim 98845590710SGu Zheng rn = F2FS_NODE(page); 989e05df3b1SJaegeuk Kim if (depth < 3) { 990e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 991e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 992e05df3b1SJaegeuk Kim if (child_nid == 0) 993e05df3b1SJaegeuk Kim continue; 994e05df3b1SJaegeuk Kim rdn.nid = child_nid; 995e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 996e05df3b1SJaegeuk Kim if (ret < 0) 997e05df3b1SJaegeuk Kim goto out_err; 99812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 99993bae099SJaegeuk Kim dn->node_changed = true; 1000e05df3b1SJaegeuk Kim } 1001e05df3b1SJaegeuk Kim } else { 1002e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 1003e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 1004e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 1005e05df3b1SJaegeuk Kim if (child_nid == 0) { 1006e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 1007e05df3b1SJaegeuk Kim continue; 1008e05df3b1SJaegeuk Kim } 1009e05df3b1SJaegeuk Kim rdn.nid = child_nid; 1010e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 1011e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 101212719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 101393bae099SJaegeuk Kim dn->node_changed = true; 1014e05df3b1SJaegeuk Kim child_nofs += ret; 1015e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 1016e05df3b1SJaegeuk Kim goto out_err; 1017e05df3b1SJaegeuk Kim } 1018e05df3b1SJaegeuk Kim } 1019e05df3b1SJaegeuk Kim freed = child_nofs; 1020e05df3b1SJaegeuk Kim } 1021e05df3b1SJaegeuk Kim 1022e05df3b1SJaegeuk Kim if (!ofs) { 1023e05df3b1SJaegeuk Kim /* remove current indirect node */ 1024e05df3b1SJaegeuk Kim dn->node_page = page; 10257735730dSChao Yu ret = truncate_node(dn); 10267735730dSChao Yu if (ret) 10277735730dSChao Yu goto out_err; 1028e05df3b1SJaegeuk Kim freed++; 1029e05df3b1SJaegeuk Kim } else { 1030e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1031e05df3b1SJaegeuk Kim } 103251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 1033e05df3b1SJaegeuk Kim return freed; 1034e05df3b1SJaegeuk Kim 1035e05df3b1SJaegeuk Kim out_err: 1036e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 103751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 1038e05df3b1SJaegeuk Kim return ret; 1039e05df3b1SJaegeuk Kim } 1040e05df3b1SJaegeuk Kim 1041e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 1042e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 1043e05df3b1SJaegeuk Kim { 1044e05df3b1SJaegeuk Kim struct page *pages[2]; 1045e05df3b1SJaegeuk Kim nid_t nid[3]; 1046e05df3b1SJaegeuk Kim nid_t child_nid; 1047e05df3b1SJaegeuk Kim int err = 0; 1048e05df3b1SJaegeuk Kim int i; 1049e05df3b1SJaegeuk Kim int idx = depth - 2; 1050e05df3b1SJaegeuk Kim 1051e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1052e05df3b1SJaegeuk Kim if (!nid[0]) 1053e05df3b1SJaegeuk Kim return 0; 1054e05df3b1SJaegeuk Kim 1055e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1056a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1057e1c42045Sarter97 /* reference count'll be increased */ 10584d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1059e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1060e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1061a225dca3Sshifei10.ge idx = i - 1; 1062e05df3b1SJaegeuk Kim goto fail; 1063e05df3b1SJaegeuk Kim } 1064e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1065e05df3b1SJaegeuk Kim } 1066e05df3b1SJaegeuk Kim 10674d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 106879344efbSJaegeuk Kim 1069e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1070a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1071e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1072e05df3b1SJaegeuk Kim if (!child_nid) 1073e05df3b1SJaegeuk Kim continue; 1074e05df3b1SJaegeuk Kim dn->nid = child_nid; 1075e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1076e05df3b1SJaegeuk Kim if (err < 0) 1077e05df3b1SJaegeuk Kim goto fail; 107812719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 107993bae099SJaegeuk Kim dn->node_changed = true; 1080e05df3b1SJaegeuk Kim } 1081e05df3b1SJaegeuk Kim 1082a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1083e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1084e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10857735730dSChao Yu err = truncate_node(dn); 10867735730dSChao Yu if (err) 10877735730dSChao Yu goto fail; 1088e05df3b1SJaegeuk Kim } else { 1089e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1090e05df3b1SJaegeuk Kim } 1091e05df3b1SJaegeuk Kim offset[idx]++; 1092a225dca3Sshifei10.ge offset[idx + 1] = 0; 1093a225dca3Sshifei10.ge idx--; 1094e05df3b1SJaegeuk Kim fail: 1095a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1096e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 109751dd6249SNamjae Jeon 109851dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 109951dd6249SNamjae Jeon 1100e05df3b1SJaegeuk Kim return err; 1101e05df3b1SJaegeuk Kim } 1102e05df3b1SJaegeuk Kim 11030a8165d7SJaegeuk Kim /* 1104e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1105e05df3b1SJaegeuk Kim */ 11064d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1107e05df3b1SJaegeuk Kim { 11084081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1109e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1110e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 11117dd690c8SJaegeuk Kim unsigned int nofs = 0; 111258bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1113e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1114e05df3b1SJaegeuk Kim struct page *page; 1115e05df3b1SJaegeuk Kim 111651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 111751dd6249SNamjae Jeon 111881ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 11199039d835SYubo Feng if (level < 0) { 11209039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1121adb6dc19SJaegeuk Kim return level; 11229039d835SYubo Feng } 1123ff373558SJaegeuk Kim 11244d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 112551dd6249SNamjae Jeon if (IS_ERR(page)) { 112651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1127e05df3b1SJaegeuk Kim return PTR_ERR(page); 112851dd6249SNamjae Jeon } 1129e05df3b1SJaegeuk Kim 1130e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1131e05df3b1SJaegeuk Kim unlock_page(page); 1132e05df3b1SJaegeuk Kim 113358bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1134e05df3b1SJaegeuk Kim switch (level) { 1135e05df3b1SJaegeuk Kim case 0: 1136e05df3b1SJaegeuk Kim case 1: 1137e05df3b1SJaegeuk Kim nofs = noffset[1]; 1138e05df3b1SJaegeuk Kim break; 1139e05df3b1SJaegeuk Kim case 2: 1140e05df3b1SJaegeuk Kim nofs = noffset[1]; 1141e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1142e05df3b1SJaegeuk Kim goto skip_partial; 114358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1144e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1145e05df3b1SJaegeuk Kim goto fail; 1146e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1147e05df3b1SJaegeuk Kim break; 1148e05df3b1SJaegeuk Kim case 3: 1149e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1150e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1151e05df3b1SJaegeuk Kim goto skip_partial; 115258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1153e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1154e05df3b1SJaegeuk Kim goto fail; 1155e05df3b1SJaegeuk Kim break; 1156e05df3b1SJaegeuk Kim default: 1157e05df3b1SJaegeuk Kim BUG(); 1158e05df3b1SJaegeuk Kim } 1159e05df3b1SJaegeuk Kim 1160e05df3b1SJaegeuk Kim skip_partial: 1161e05df3b1SJaegeuk Kim while (cont) { 116258bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1163e05df3b1SJaegeuk Kim switch (offset[0]) { 1164e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1165e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1166e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1167e05df3b1SJaegeuk Kim break; 1168e05df3b1SJaegeuk Kim 1169e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1170e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1171e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1172e05df3b1SJaegeuk Kim break; 1173e05df3b1SJaegeuk Kim 1174e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1175e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1176e05df3b1SJaegeuk Kim cont = 0; 1177e05df3b1SJaegeuk Kim break; 1178e05df3b1SJaegeuk Kim 1179e05df3b1SJaegeuk Kim default: 1180e05df3b1SJaegeuk Kim BUG(); 1181e05df3b1SJaegeuk Kim } 1182e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1183e05df3b1SJaegeuk Kim goto fail; 1184e05df3b1SJaegeuk Kim if (offset[1] == 0 && 118558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1186e05df3b1SJaegeuk Kim lock_page(page); 1187ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1188bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 118958bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1190e05df3b1SJaegeuk Kim set_page_dirty(page); 1191e05df3b1SJaegeuk Kim unlock_page(page); 1192e05df3b1SJaegeuk Kim } 1193e05df3b1SJaegeuk Kim offset[1] = 0; 1194e05df3b1SJaegeuk Kim offset[0]++; 1195e05df3b1SJaegeuk Kim nofs += err; 1196e05df3b1SJaegeuk Kim } 1197e05df3b1SJaegeuk Kim fail: 1198e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 119951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1200e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1201e05df3b1SJaegeuk Kim } 1202e05df3b1SJaegeuk Kim 12039c77f754SJaegeuk Kim /* caller must lock inode page */ 12044d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 12054f16fb0fSJaegeuk Kim { 12064081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 12074f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 12084f16fb0fSJaegeuk Kim struct dnode_of_data dn; 12094f16fb0fSJaegeuk Kim struct page *npage; 12107735730dSChao Yu int err; 12114f16fb0fSJaegeuk Kim 12124f16fb0fSJaegeuk Kim if (!nid) 12134f16fb0fSJaegeuk Kim return 0; 12144f16fb0fSJaegeuk Kim 12154d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 12164f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 12174f16fb0fSJaegeuk Kim return PTR_ERR(npage); 12184f16fb0fSJaegeuk Kim 12197735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 12207735730dSChao Yu err = truncate_node(&dn); 12217735730dSChao Yu if (err) { 12227735730dSChao Yu f2fs_put_page(npage, 1); 12237735730dSChao Yu return err; 12247735730dSChao Yu } 12257735730dSChao Yu 1226205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 122765985d93SJaegeuk Kim 12284f16fb0fSJaegeuk Kim return 0; 12294f16fb0fSJaegeuk Kim } 12304f16fb0fSJaegeuk Kim 123139936837SJaegeuk Kim /* 12324f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 12334f4124d0SChao Yu * f2fs_unlock_op(). 123439936837SJaegeuk Kim */ 12354d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1236e05df3b1SJaegeuk Kim { 1237e05df3b1SJaegeuk Kim struct dnode_of_data dn; 123813ec7297SChao Yu int err; 1239e05df3b1SJaegeuk Kim 1240c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 12414d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 124213ec7297SChao Yu if (err) 124313ec7297SChao Yu return err; 1244e05df3b1SJaegeuk Kim 12454d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 124613ec7297SChao Yu if (err) { 1247c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 124813ec7297SChao Yu return err; 1249e05df3b1SJaegeuk Kim } 1250c2e69583SJaegeuk Kim 1251c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1252c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1253c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12544d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1255c2e69583SJaegeuk Kim 1256e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12578d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12588d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12598d714f8aSJaegeuk Kim return -EIO; 12608d714f8aSJaegeuk Kim } 12618b6810f8SChao Yu 12628b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1263097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1264097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1265dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12668b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12678b6810f8SChao Yu } 1268c2e69583SJaegeuk Kim 1269c2e69583SJaegeuk Kim /* will put inode & node pages */ 12707735730dSChao Yu err = truncate_node(&dn); 12717735730dSChao Yu if (err) { 12727735730dSChao Yu f2fs_put_dnode(&dn); 12737735730dSChao Yu return err; 12747735730dSChao Yu } 127513ec7297SChao Yu return 0; 1276e05df3b1SJaegeuk Kim } 1277e05df3b1SJaegeuk Kim 12784d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1279e05df3b1SJaegeuk Kim { 1280e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1281e05df3b1SJaegeuk Kim 1282e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1283e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 128444a83ff6SJaegeuk Kim 128544a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12864d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1287e05df3b1SJaegeuk Kim } 1288e05df3b1SJaegeuk Kim 12894d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1290e05df3b1SJaegeuk Kim { 12914081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 129225cc5d3bSJaegeuk Kim struct node_info new_ni; 1293e05df3b1SJaegeuk Kim struct page *page; 1294e05df3b1SJaegeuk Kim int err; 1295e05df3b1SJaegeuk Kim 129691942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1297e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1298e05df3b1SJaegeuk Kim 1299300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1300e05df3b1SJaegeuk Kim if (!page) 1301e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1302e05df3b1SJaegeuk Kim 13030abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 13049c02740cSJaegeuk Kim goto fail; 13050abd675eSChao Yu 130625cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 1307a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false); 13087735730dSChao Yu if (err) { 13097735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 13107735730dSChao Yu goto fail; 13117735730dSChao Yu } 1312141170b7SChao Yu if (unlikely(new_ni.blk_addr != NULL_ADDR)) { 1313141170b7SChao Yu err = -EFSCORRUPTED; 1314141170b7SChao Yu set_sbi_flag(sbi, SBI_NEED_FSCK); 131595fa90c9SChao Yu f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); 1316141170b7SChao Yu goto fail; 1317141170b7SChao Yu } 131825cc5d3bSJaegeuk Kim #endif 131925cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1320e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 132125cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 132225cc5d3bSJaegeuk Kim new_ni.flag = 0; 132325cc5d3bSJaegeuk Kim new_ni.version = 0; 1324479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 13259c02740cSJaegeuk Kim 1326bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 13279c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1328c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1329237c0790SJaegeuk Kim if (!PageUptodate(page)) 13309c02740cSJaegeuk Kim SetPageUptodate(page); 133112719ae1SJaegeuk Kim if (set_page_dirty(page)) 133212719ae1SJaegeuk Kim dn->node_changed = true; 1333e05df3b1SJaegeuk Kim 13344bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1335205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1336479bd73aSJaegeuk Kim 1337e05df3b1SJaegeuk Kim if (ofs == 0) 1338e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1339e05df3b1SJaegeuk Kim return page; 1340e05df3b1SJaegeuk Kim 1341e05df3b1SJaegeuk Kim fail: 134271e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1343e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1344e05df3b1SJaegeuk Kim return ERR_PTR(err); 1345e05df3b1SJaegeuk Kim } 1346e05df3b1SJaegeuk Kim 134756ae674cSJaegeuk Kim /* 134856ae674cSJaegeuk Kim * Caller should do after getting the following values. 134956ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 135086531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 135156ae674cSJaegeuk Kim */ 13527649c873SBart Van Assche static int read_node_page(struct page *page, blk_opf_t op_flags) 1353e05df3b1SJaegeuk Kim { 13544081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1355e05df3b1SJaegeuk Kim struct node_info ni; 1356cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 135705ca3632SJaegeuk Kim .sbi = sbi, 1358cf04e8ebSJaegeuk Kim .type = NODE, 135904d328deSMike Christie .op = REQ_OP_READ, 136004d328deSMike Christie .op_flags = op_flags, 136105ca3632SJaegeuk Kim .page = page, 13624375a336SJaegeuk Kim .encrypted_page = NULL, 1363cf04e8ebSJaegeuk Kim }; 13647735730dSChao Yu int err; 1365e05df3b1SJaegeuk Kim 136654c55c4eSWeichao Guo if (PageUptodate(page)) { 1367b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1368b42b179bSChao Yu ClearPageUptodate(page); 136910f966bbSChao Yu return -EFSBADCRC; 1370b42b179bSChao Yu } 13713bdad3c7SJaegeuk Kim return LOCKED_PAGE; 137254c55c4eSWeichao Guo } 13733bdad3c7SJaegeuk Kim 1374a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, page->index, &ni, false); 13757735730dSChao Yu if (err) 13767735730dSChao Yu return err; 1377e05df3b1SJaegeuk Kim 1378b7ec2061SJaegeuk Kim /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */ 1379e6ecb142SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR)) { 13802bca1e23SJaegeuk Kim ClearPageUptodate(page); 1381e05df3b1SJaegeuk Kim return -ENOENT; 1382393ff91fSJaegeuk Kim } 1383393ff91fSJaegeuk Kim 13847a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13858b83ac81SChao Yu 13868b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13878b83ac81SChao Yu 13888b83ac81SChao Yu if (!err) 138934a23525SChao Yu f2fs_update_iostat(sbi, NULL, FS_NODE_READ_IO, F2FS_BLKSIZE); 13908b83ac81SChao Yu 13918b83ac81SChao Yu return err; 1392e05df3b1SJaegeuk Kim } 1393e05df3b1SJaegeuk Kim 13940a8165d7SJaegeuk Kim /* 1395e05df3b1SJaegeuk Kim * Readahead a node page 1396e05df3b1SJaegeuk Kim */ 13974d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1398e05df3b1SJaegeuk Kim { 1399e05df3b1SJaegeuk Kim struct page *apage; 140056ae674cSJaegeuk Kim int err; 1401e05df3b1SJaegeuk Kim 1402e8458725SChao Yu if (!nid) 1403e8458725SChao Yu return; 14044d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1405a4f843bdSJaegeuk Kim return; 1406e8458725SChao Yu 14075ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1408999270deSFan Li if (apage) 1409393ff91fSJaegeuk Kim return; 1410e05df3b1SJaegeuk Kim 1411300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1412e05df3b1SJaegeuk Kim if (!apage) 1413e05df3b1SJaegeuk Kim return; 1414e05df3b1SJaegeuk Kim 141570246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 141686531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1417e05df3b1SJaegeuk Kim } 1418e05df3b1SJaegeuk Kim 141917a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 14200e022ea8SChao Yu struct page *parent, int start) 1421e05df3b1SJaegeuk Kim { 142256ae674cSJaegeuk Kim struct page *page; 142356ae674cSJaegeuk Kim int err; 14244aa69d56SJaegeuk Kim 14254aa69d56SJaegeuk Kim if (!nid) 14264aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 14274d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1428a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1429afcb7ca0SJaegeuk Kim repeat: 1430300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1431e05df3b1SJaegeuk Kim if (!page) 1432e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1433e05df3b1SJaegeuk Kim 143470fd7614SChristoph Hellwig err = read_node_page(page, 0); 143586531d6bSJaegeuk Kim if (err < 0) { 1436a7b8618aSJaegeuk Kim goto out_put_err; 1437e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 14381f258ec1SChao Yu err = 0; 1439e1c51b9fSChao Yu goto page_hit; 144086531d6bSJaegeuk Kim } 1441aaf96075SJaegeuk Kim 14420e022ea8SChao Yu if (parent) 14434d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 14440e022ea8SChao Yu 1445e1c51b9fSChao Yu lock_page(page); 1446e1c51b9fSChao Yu 14474ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1448afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1449afcb7ca0SJaegeuk Kim goto repeat; 1450afcb7ca0SJaegeuk Kim } 14511563ac75SChao Yu 14521f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14531f258ec1SChao Yu err = -EIO; 14541563ac75SChao Yu goto out_err; 14551f258ec1SChao Yu } 1456704956ecSChao Yu 1457704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 145810f966bbSChao Yu err = -EFSBADCRC; 1459704956ecSChao Yu goto out_err; 1460704956ecSChao Yu } 1461e1c51b9fSChao Yu page_hit: 1462a7b8618aSJaegeuk Kim if (likely(nid == nid_of_node(page))) 1463a7b8618aSJaegeuk Kim return page; 1464a7b8618aSJaegeuk Kim 1465dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14661f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14671f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14681f258ec1SChao Yu next_blkaddr_of_node(page)); 14696663b138SWeichao Guo set_sbi_flag(sbi, SBI_NEED_FSCK); 1470b7b01c78SZhiguo Niu f2fs_handle_error(sbi, ERROR_INCONSISTENT_FOOTER); 1471b7b01c78SZhiguo Niu err = -EFSCORRUPTED; 14720c9df7fbSYunlong Song out_err: 1473ee605234SJaegeuk Kim ClearPageUptodate(page); 1474a7b8618aSJaegeuk Kim out_put_err: 147582c7863eSJaegeuk Kim /* ENOENT comes from read_node_page which is not an error. */ 147682c7863eSJaegeuk Kim if (err != -ENOENT) 1477a7b8618aSJaegeuk Kim f2fs_handle_page_eio(sbi, page->index, NODE); 14780c9df7fbSYunlong Song f2fs_put_page(page, 1); 14791f258ec1SChao Yu return ERR_PTR(err); 14800c9df7fbSYunlong Song } 1481e05df3b1SJaegeuk Kim 14824d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14830e022ea8SChao Yu { 14840e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14850e022ea8SChao Yu } 14860e022ea8SChao Yu 14874d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1488e05df3b1SJaegeuk Kim { 14894081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14900e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1491e05df3b1SJaegeuk Kim 14920e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1493e05df3b1SJaegeuk Kim } 1494e05df3b1SJaegeuk Kim 14952049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14962049d4fcSJaegeuk Kim { 14972049d4fcSJaegeuk Kim struct inode *inode; 14982049d4fcSJaegeuk Kim struct page *page; 14990f3311a8SChao Yu int ret; 15002049d4fcSJaegeuk Kim 15012049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 15022049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 15032049d4fcSJaegeuk Kim if (!inode) 15042049d4fcSJaegeuk Kim return; 15052049d4fcSJaegeuk Kim 150601eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 150701eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 15082049d4fcSJaegeuk Kim if (!page) 15092049d4fcSJaegeuk Kim goto iput_out; 15102049d4fcSJaegeuk Kim 15112049d4fcSJaegeuk Kim if (!PageUptodate(page)) 15122049d4fcSJaegeuk Kim goto page_out; 15132049d4fcSJaegeuk Kim 15142049d4fcSJaegeuk Kim if (!PageDirty(page)) 15152049d4fcSJaegeuk Kim goto page_out; 15162049d4fcSJaegeuk Kim 15172049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 15182049d4fcSJaegeuk Kim goto page_out; 15192049d4fcSJaegeuk Kim 15200f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 15212049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 15224d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 15230f3311a8SChao Yu if (ret) 15242049d4fcSJaegeuk Kim set_page_dirty(page); 15252049d4fcSJaegeuk Kim page_out: 15264a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 15272049d4fcSJaegeuk Kim iput_out: 15282049d4fcSJaegeuk Kim iput(inode); 15292049d4fcSJaegeuk Kim } 15302049d4fcSJaegeuk Kim 1531608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1532e05df3b1SJaegeuk Kim { 1533028a63a6SJan Kara pgoff_t index; 15344f4a4f0fSVishal Moola (Oracle) struct folio_batch fbatch; 1535608514deSJaegeuk Kim struct page *last_page = NULL; 15364f4a4f0fSVishal Moola (Oracle) int nr_folios; 153752681375SJaegeuk Kim 15384f4a4f0fSVishal Moola (Oracle) folio_batch_init(&fbatch); 153952681375SJaegeuk Kim index = 0; 154052681375SJaegeuk Kim 15414f4a4f0fSVishal Moola (Oracle) while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index, 15424f4a4f0fSVishal Moola (Oracle) (pgoff_t)-1, PAGECACHE_TAG_DIRTY, 15434f4a4f0fSVishal Moola (Oracle) &fbatch))) { 1544028a63a6SJan Kara int i; 154552681375SJaegeuk Kim 15464f4a4f0fSVishal Moola (Oracle) for (i = 0; i < nr_folios; i++) { 15474f4a4f0fSVishal Moola (Oracle) struct page *page = &fbatch.folios[i]->page; 154852681375SJaegeuk Kim 154952681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1550608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 15514f4a4f0fSVishal Moola (Oracle) folio_batch_release(&fbatch); 1552608514deSJaegeuk Kim return ERR_PTR(-EIO); 155352681375SJaegeuk Kim } 155452681375SJaegeuk Kim 155552681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 155652681375SJaegeuk Kim continue; 155752681375SJaegeuk Kim if (ino_of_node(page) != ino) 155852681375SJaegeuk Kim continue; 155952681375SJaegeuk Kim 156052681375SJaegeuk Kim lock_page(page); 156152681375SJaegeuk Kim 156252681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 156352681375SJaegeuk Kim continue_unlock: 156452681375SJaegeuk Kim unlock_page(page); 156552681375SJaegeuk Kim continue; 156652681375SJaegeuk Kim } 156752681375SJaegeuk Kim if (ino_of_node(page) != ino) 156852681375SJaegeuk Kim goto continue_unlock; 156952681375SJaegeuk Kim 157052681375SJaegeuk Kim if (!PageDirty(page)) { 157152681375SJaegeuk Kim /* someone wrote it for us */ 157252681375SJaegeuk Kim goto continue_unlock; 157352681375SJaegeuk Kim } 157452681375SJaegeuk Kim 1575608514deSJaegeuk Kim if (last_page) 1576608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1577608514deSJaegeuk Kim 1578608514deSJaegeuk Kim get_page(page); 1579608514deSJaegeuk Kim last_page = page; 1580608514deSJaegeuk Kim unlock_page(page); 1581608514deSJaegeuk Kim } 15824f4a4f0fSVishal Moola (Oracle) folio_batch_release(&fbatch); 1583608514deSJaegeuk Kim cond_resched(); 1584608514deSJaegeuk Kim } 1585608514deSJaegeuk Kim return last_page; 1586608514deSJaegeuk Kim } 1587608514deSJaegeuk Kim 1588d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1589b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 159050fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1591faa24895SJaegeuk Kim { 1592faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1593faa24895SJaegeuk Kim nid_t nid; 1594faa24895SJaegeuk Kim struct node_info ni; 1595faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1596faa24895SJaegeuk Kim .sbi = sbi, 159739d787beSChao Yu .ino = ino_of_node(page), 1598faa24895SJaegeuk Kim .type = NODE, 1599faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1600faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1601faa24895SJaegeuk Kim .page = page, 1602faa24895SJaegeuk Kim .encrypted_page = NULL, 16032eae077eSChao Yu .submitted = 0, 1604b0af6d49SChao Yu .io_type = io_type, 1605578c6478SYufen Yu .io_wbc = wbc, 1606faa24895SJaegeuk Kim }; 160750fa53ecSChao Yu unsigned int seq; 1608faa24895SJaegeuk Kim 1609faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1610faa24895SJaegeuk Kim 16116d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1612b62e71beSChao Yu /* keep node pages in remount-ro mode */ 1613b62e71beSChao Yu if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) 1614b62e71beSChao Yu goto redirty_out; 16156d7c865cSJaegeuk Kim ClearPageUptodate(page); 16166d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 16176d7c865cSJaegeuk Kim unlock_page(page); 16186d7c865cSJaegeuk Kim return 0; 16196d7c865cSJaegeuk Kim } 1620db198ae0SChao Yu 1621faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1622faa24895SJaegeuk Kim goto redirty_out; 1623faa24895SJaegeuk Kim 1624100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1625100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1626fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1627fd8c8cafSChao Yu goto redirty_out; 1628fd8c8cafSChao Yu 1629faa24895SJaegeuk Kim /* get old block addr of this node page */ 1630faa24895SJaegeuk Kim nid = nid_of_node(page); 1631faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1632faa24895SJaegeuk Kim 1633a9419b63SJaegeuk Kim if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) 16347735730dSChao Yu goto redirty_out; 16357735730dSChao Yu 1636faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1637e4544b63STim Murray if (!f2fs_down_read_trylock(&sbi->node_write)) 1638faa24895SJaegeuk Kim goto redirty_out; 1639faa24895SJaegeuk Kim } else { 1640e4544b63STim Murray f2fs_down_read(&sbi->node_write); 1641faa24895SJaegeuk Kim } 1642faa24895SJaegeuk Kim 1643faa24895SJaegeuk Kim /* This page is already truncated */ 1644faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1645faa24895SJaegeuk Kim ClearPageUptodate(page); 1646faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1647e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1648faa24895SJaegeuk Kim unlock_page(page); 1649faa24895SJaegeuk Kim return 0; 1650faa24895SJaegeuk Kim } 1651faa24895SJaegeuk Kim 1652c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 165393770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 165493770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 1655e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1656c9b60788SChao Yu goto redirty_out; 165789d13c38SJaegeuk Kim } 1658c9b60788SChao Yu 1659c550e25bSJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi)) 1660e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1661e7c75ab0SJaegeuk Kim 1662dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 166350fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 166450fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 166550fa53ecSChao Yu if (seq_id) 166650fa53ecSChao Yu *seq_id = seq; 166750fa53ecSChao Yu } 166850fa53ecSChao Yu 1669dc5a9412SChao Yu set_page_writeback(page); 1670dc5a9412SChao Yu 1671faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16724d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1673faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1674faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1675e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1676faa24895SJaegeuk Kim 1677d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1678bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1679d68f735bSJaegeuk Kim submitted = NULL; 1680d68f735bSJaegeuk Kim } 1681faa24895SJaegeuk Kim 1682faa24895SJaegeuk Kim unlock_page(page); 1683faa24895SJaegeuk Kim 1684d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1685b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1686d68f735bSJaegeuk Kim submitted = NULL; 1687d68f735bSJaegeuk Kim } 1688d68f735bSJaegeuk Kim if (submitted) 1689d68f735bSJaegeuk Kim *submitted = fio.submitted; 1690faa24895SJaegeuk Kim 1691401db79fSYunlong Song if (do_balance) 1692401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1693faa24895SJaegeuk Kim return 0; 1694faa24895SJaegeuk Kim 1695faa24895SJaegeuk Kim redirty_out: 1696faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1697faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1698faa24895SJaegeuk Kim } 1699faa24895SJaegeuk Kim 170048018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1701f15194fcSYunlei He { 170248018b4cSChao Yu int err = 0; 170348018b4cSChao Yu 1704f15194fcSYunlei He if (gc_type == FG_GC) { 1705f15194fcSYunlei He struct writeback_control wbc = { 1706f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1707f15194fcSYunlei He .nr_to_write = 1, 1708f15194fcSYunlei He .for_reclaim = 0, 1709f15194fcSYunlei He }; 1710f15194fcSYunlei He 1711bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 17128d64d365SChao Yu 17138d64d365SChao Yu set_page_dirty(node_page); 17148d64d365SChao Yu 171548018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 171648018b4cSChao Yu err = -EAGAIN; 1717f15194fcSYunlei He goto out_page; 171848018b4cSChao Yu } 1719f15194fcSYunlei He 1720f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 172148018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 172248018b4cSChao Yu err = -EAGAIN; 1723f15194fcSYunlei He unlock_page(node_page); 172448018b4cSChao Yu } 1725f15194fcSYunlei He goto release_page; 1726f15194fcSYunlei He } else { 1727f15194fcSYunlei He /* set page dirty and write it */ 1728f15194fcSYunlei He if (!PageWriteback(node_page)) 1729f15194fcSYunlei He set_page_dirty(node_page); 1730f15194fcSYunlei He } 1731f15194fcSYunlei He out_page: 1732f15194fcSYunlei He unlock_page(node_page); 1733f15194fcSYunlei He release_page: 1734f15194fcSYunlei He f2fs_put_page(node_page, 0); 173548018b4cSChao Yu return err; 1736f15194fcSYunlei He } 1737f15194fcSYunlei He 1738faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1739faa24895SJaegeuk Kim struct writeback_control *wbc) 1740faa24895SJaegeuk Kim { 174150fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 174250fa53ecSChao Yu FS_NODE_IO, NULL); 1743faa24895SJaegeuk Kim } 1744faa24895SJaegeuk Kim 17454d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 174650fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 174750fa53ecSChao Yu unsigned int *seq_id) 1748608514deSJaegeuk Kim { 1749028a63a6SJan Kara pgoff_t index; 1750e6e46e1eSVishal Moola (Oracle) struct folio_batch fbatch; 1751608514deSJaegeuk Kim int ret = 0; 1752608514deSJaegeuk Kim struct page *last_page = NULL; 1753608514deSJaegeuk Kim bool marked = false; 175426de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1755e6e46e1eSVishal Moola (Oracle) int nr_folios; 1756bab475c5SChao Yu int nwritten = 0; 1757608514deSJaegeuk Kim 1758608514deSJaegeuk Kim if (atomic) { 1759608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1760608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1761608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1762608514deSJaegeuk Kim } 1763608514deSJaegeuk Kim retry: 1764e6e46e1eSVishal Moola (Oracle) folio_batch_init(&fbatch); 1765608514deSJaegeuk Kim index = 0; 1766608514deSJaegeuk Kim 1767e6e46e1eSVishal Moola (Oracle) while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index, 1768e6e46e1eSVishal Moola (Oracle) (pgoff_t)-1, PAGECACHE_TAG_DIRTY, 1769e6e46e1eSVishal Moola (Oracle) &fbatch))) { 1770028a63a6SJan Kara int i; 1771608514deSJaegeuk Kim 1772e6e46e1eSVishal Moola (Oracle) for (i = 0; i < nr_folios; i++) { 1773e6e46e1eSVishal Moola (Oracle) struct page *page = &fbatch.folios[i]->page; 1774d68f735bSJaegeuk Kim bool submitted = false; 1775608514deSJaegeuk Kim 1776608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1777608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1778e6e46e1eSVishal Moola (Oracle) folio_batch_release(&fbatch); 17799de69279SChao Yu ret = -EIO; 17809de69279SChao Yu goto out; 1781608514deSJaegeuk Kim } 1782608514deSJaegeuk Kim 1783608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1784608514deSJaegeuk Kim continue; 1785608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1786608514deSJaegeuk Kim continue; 1787608514deSJaegeuk Kim 1788608514deSJaegeuk Kim lock_page(page); 1789608514deSJaegeuk Kim 1790608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1791608514deSJaegeuk Kim continue_unlock: 1792608514deSJaegeuk Kim unlock_page(page); 1793608514deSJaegeuk Kim continue; 1794608514deSJaegeuk Kim } 1795608514deSJaegeuk Kim if (ino_of_node(page) != ino) 179652681375SJaegeuk Kim goto continue_unlock; 179752681375SJaegeuk Kim 1798608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1799608514deSJaegeuk Kim /* someone wrote it for us */ 1800608514deSJaegeuk Kim goto continue_unlock; 1801608514deSJaegeuk Kim } 1802608514deSJaegeuk Kim 1803bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1804608514deSJaegeuk Kim 1805d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1806d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1807d29fd172SJaegeuk Kim 1808608514deSJaegeuk Kim if (!atomic || page == last_page) { 180952681375SJaegeuk Kim set_fsync_mark(page, 1); 181047c8ebccSJaegeuk Kim percpu_counter_inc(&sbi->rf_node_block_count); 181126de9b11SJaegeuk Kim if (IS_INODE(page)) { 181226de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 181326de9b11SJaegeuk Kim FI_DIRTY_INODE)) 18144d57b86dSChao Yu f2fs_update_inode(inode, page); 181552681375SJaegeuk Kim set_dentry_mark(page, 18164d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 181726de9b11SJaegeuk Kim } 1818608514deSJaegeuk Kim /* may be written by other thread */ 1819608514deSJaegeuk Kim if (!PageDirty(page)) 1820608514deSJaegeuk Kim set_page_dirty(page); 1821608514deSJaegeuk Kim } 1822608514deSJaegeuk Kim 1823608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1824608514deSJaegeuk Kim goto continue_unlock; 182552681375SJaegeuk Kim 1826e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1827d68f735bSJaegeuk Kim page == last_page, 1828b0af6d49SChao Yu &submitted, wbc, true, 182950fa53ecSChao Yu FS_NODE_IO, seq_id); 1830c267ec15SJaegeuk Kim if (ret) { 183152681375SJaegeuk Kim unlock_page(page); 1832608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1833608514deSJaegeuk Kim break; 1834d68f735bSJaegeuk Kim } else if (submitted) { 1835bab475c5SChao Yu nwritten++; 1836608514deSJaegeuk Kim } 18373f5f4959SChao Yu 1838608514deSJaegeuk Kim if (page == last_page) { 1839608514deSJaegeuk Kim f2fs_put_page(page, 0); 1840608514deSJaegeuk Kim marked = true; 184152681375SJaegeuk Kim break; 184252681375SJaegeuk Kim } 1843c267ec15SJaegeuk Kim } 1844e6e46e1eSVishal Moola (Oracle) folio_batch_release(&fbatch); 184552681375SJaegeuk Kim cond_resched(); 184652681375SJaegeuk Kim 1847608514deSJaegeuk Kim if (ret || marked) 184852681375SJaegeuk Kim break; 184952681375SJaegeuk Kim } 1850608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1851dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1852608514deSJaegeuk Kim ino, last_page->index); 1853608514deSJaegeuk Kim lock_page(last_page); 1854bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1855608514deSJaegeuk Kim set_page_dirty(last_page); 1856608514deSJaegeuk Kim unlock_page(last_page); 1857608514deSJaegeuk Kim goto retry; 1858608514deSJaegeuk Kim } 18599de69279SChao Yu out: 1860bab475c5SChao Yu if (nwritten) 1861bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1862c267ec15SJaegeuk Kim return ret ? -EIO : 0; 186352681375SJaegeuk Kim } 186452681375SJaegeuk Kim 1865052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1866052a82d8SChao Yu { 1867052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1868052a82d8SChao Yu bool clean; 1869052a82d8SChao Yu 1870052a82d8SChao Yu if (inode->i_ino != ino) 1871052a82d8SChao Yu return 0; 1872052a82d8SChao Yu 1873052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1874052a82d8SChao Yu return 0; 1875052a82d8SChao Yu 1876052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1877052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1878052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1879052a82d8SChao Yu 1880052a82d8SChao Yu if (clean) 1881052a82d8SChao Yu return 0; 1882052a82d8SChao Yu 1883052a82d8SChao Yu inode = igrab(inode); 1884052a82d8SChao Yu if (!inode) 1885052a82d8SChao Yu return 0; 1886052a82d8SChao Yu return 1; 1887052a82d8SChao Yu } 1888052a82d8SChao Yu 1889052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1890052a82d8SChao Yu { 1891052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1892052a82d8SChao Yu struct inode *inode; 1893052a82d8SChao Yu nid_t ino = ino_of_node(page); 1894052a82d8SChao Yu 1895052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1896052a82d8SChao Yu if (!inode) 1897052a82d8SChao Yu return false; 1898052a82d8SChao Yu 1899052a82d8SChao Yu f2fs_update_inode(inode, page); 1900052a82d8SChao Yu unlock_page(page); 1901052a82d8SChao Yu 1902052a82d8SChao Yu iput(inode); 1903052a82d8SChao Yu return true; 1904052a82d8SChao Yu } 1905052a82d8SChao Yu 190668e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 190734c061adSSayali Lokhande { 190834c061adSSayali Lokhande pgoff_t index = 0; 1909a40a4ad1SVishal Moola (Oracle) struct folio_batch fbatch; 1910a40a4ad1SVishal Moola (Oracle) int nr_folios; 191134c061adSSayali Lokhande 1912a40a4ad1SVishal Moola (Oracle) folio_batch_init(&fbatch); 191334c061adSSayali Lokhande 1914a40a4ad1SVishal Moola (Oracle) while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index, 1915a40a4ad1SVishal Moola (Oracle) (pgoff_t)-1, PAGECACHE_TAG_DIRTY, 1916a40a4ad1SVishal Moola (Oracle) &fbatch))) { 191734c061adSSayali Lokhande int i; 191834c061adSSayali Lokhande 1919a40a4ad1SVishal Moola (Oracle) for (i = 0; i < nr_folios; i++) { 1920a40a4ad1SVishal Moola (Oracle) struct page *page = &fbatch.folios[i]->page; 192134c061adSSayali Lokhande 192234c061adSSayali Lokhande if (!IS_DNODE(page)) 192334c061adSSayali Lokhande continue; 192434c061adSSayali Lokhande 192534c061adSSayali Lokhande lock_page(page); 192634c061adSSayali Lokhande 192734c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 192834c061adSSayali Lokhande continue_unlock: 192934c061adSSayali Lokhande unlock_page(page); 193034c061adSSayali Lokhande continue; 193134c061adSSayali Lokhande } 193234c061adSSayali Lokhande 193334c061adSSayali Lokhande if (!PageDirty(page)) { 193434c061adSSayali Lokhande /* someone wrote it for us */ 193534c061adSSayali Lokhande goto continue_unlock; 193634c061adSSayali Lokhande } 193734c061adSSayali Lokhande 193834c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1939b763f3beSChao Yu if (page_private_inline(page)) { 1940b763f3beSChao Yu clear_page_private_inline(page); 194134c061adSSayali Lokhande unlock_page(page); 194234c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 194334c061adSSayali Lokhande continue; 194434c061adSSayali Lokhande } 194534c061adSSayali Lokhande unlock_page(page); 194634c061adSSayali Lokhande } 1947a40a4ad1SVishal Moola (Oracle) folio_batch_release(&fbatch); 194834c061adSSayali Lokhande cond_resched(); 194934c061adSSayali Lokhande } 195034c061adSSayali Lokhande } 195134c061adSSayali Lokhande 19524d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 19534d57b86dSChao Yu struct writeback_control *wbc, 1954b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 195552681375SJaegeuk Kim { 1956028a63a6SJan Kara pgoff_t index; 19577525486aSVishal Moola (Oracle) struct folio_batch fbatch; 195852681375SJaegeuk Kim int step = 0; 195912bb0a8fSJaegeuk Kim int nwritten = 0; 19603f5f4959SChao Yu int ret = 0; 19617525486aSVishal Moola (Oracle) int nr_folios, done = 0; 1962e05df3b1SJaegeuk Kim 19637525486aSVishal Moola (Oracle) folio_batch_init(&fbatch); 1964e05df3b1SJaegeuk Kim 1965e05df3b1SJaegeuk Kim next_step: 1966e05df3b1SJaegeuk Kim index = 0; 1967e05df3b1SJaegeuk Kim 19687525486aSVishal Moola (Oracle) while (!done && (nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), 19697525486aSVishal Moola (Oracle) &index, (pgoff_t)-1, PAGECACHE_TAG_DIRTY, 19707525486aSVishal Moola (Oracle) &fbatch))) { 1971028a63a6SJan Kara int i; 1972e05df3b1SJaegeuk Kim 19737525486aSVishal Moola (Oracle) for (i = 0; i < nr_folios; i++) { 19747525486aSVishal Moola (Oracle) struct page *page = &fbatch.folios[i]->page; 1975d68f735bSJaegeuk Kim bool submitted = false; 1976e05df3b1SJaegeuk Kim 1977c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1978c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1979c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1980c29fd0c0SChao Yu done = 1; 1981c29fd0c0SChao Yu break; 1982c29fd0c0SChao Yu } 1983c29fd0c0SChao Yu 1984e05df3b1SJaegeuk Kim /* 1985e05df3b1SJaegeuk Kim * flushing sequence with step: 1986e05df3b1SJaegeuk Kim * 0. indirect nodes 1987e05df3b1SJaegeuk Kim * 1. dentry dnodes 1988e05df3b1SJaegeuk Kim * 2. file dnodes 1989e05df3b1SJaegeuk Kim */ 1990e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1991e05df3b1SJaegeuk Kim continue; 1992e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1993e05df3b1SJaegeuk Kim is_cold_node(page))) 1994e05df3b1SJaegeuk Kim continue; 1995e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1996e05df3b1SJaegeuk Kim !is_cold_node(page))) 1997e05df3b1SJaegeuk Kim continue; 19989a4cbc9eSChao Yu lock_node: 19994b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 20004b270a8cSChao Yu lock_page(page); 20014b270a8cSChao Yu else if (!trylock_page(page)) 2002e05df3b1SJaegeuk Kim continue; 2003e05df3b1SJaegeuk Kim 20044ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 2005e05df3b1SJaegeuk Kim continue_unlock: 2006e05df3b1SJaegeuk Kim unlock_page(page); 2007e05df3b1SJaegeuk Kim continue; 2008e05df3b1SJaegeuk Kim } 2009e05df3b1SJaegeuk Kim 2010e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 2011e05df3b1SJaegeuk Kim /* someone wrote it for us */ 2012e05df3b1SJaegeuk Kim goto continue_unlock; 2013e05df3b1SJaegeuk Kim } 2014e05df3b1SJaegeuk Kim 2015b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 2016b0f3b87fSJaegeuk Kim if (!do_balance) 2017b0f3b87fSJaegeuk Kim goto write_node; 2018b0f3b87fSJaegeuk Kim 2019b0f3b87fSJaegeuk Kim /* flush inline_data */ 2020b763f3beSChao Yu if (page_private_inline(page)) { 2021b763f3beSChao Yu clear_page_private_inline(page); 20222049d4fcSJaegeuk Kim unlock_page(page); 20232049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 20249a4cbc9eSChao Yu goto lock_node; 20252049d4fcSJaegeuk Kim } 20262049d4fcSJaegeuk Kim 2027052a82d8SChao Yu /* flush dirty inode */ 20287859e97fSJaegeuk Kim if (IS_INODE(page) && flush_dirty_inode(page)) 2029052a82d8SChao Yu goto lock_node; 2030b0f3b87fSJaegeuk Kim write_node: 2031bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 2032fa3d2bdfSJaegeuk Kim 2033e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 2034e05df3b1SJaegeuk Kim goto continue_unlock; 2035e05df3b1SJaegeuk Kim 2036e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 2037e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 203852746519SJaegeuk Kim 2039401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 204050fa53ecSChao Yu wbc, do_balance, io_type, NULL); 2041d68f735bSJaegeuk Kim if (ret) 204252746519SJaegeuk Kim unlock_page(page); 2043d68f735bSJaegeuk Kim else if (submitted) 20443f5f4959SChao Yu nwritten++; 2045e05df3b1SJaegeuk Kim 2046e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 2047e05df3b1SJaegeuk Kim break; 2048e05df3b1SJaegeuk Kim } 20497525486aSVishal Moola (Oracle) folio_batch_release(&fbatch); 2050e05df3b1SJaegeuk Kim cond_resched(); 2051e05df3b1SJaegeuk Kim 2052e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 2053e05df3b1SJaegeuk Kim step = 2; 2054e05df3b1SJaegeuk Kim break; 2055e05df3b1SJaegeuk Kim } 2056e05df3b1SJaegeuk Kim } 2057e05df3b1SJaegeuk Kim 2058e05df3b1SJaegeuk Kim if (step < 2) { 2059100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2060100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2061fd8c8cafSChao Yu goto out; 2062e05df3b1SJaegeuk Kim step++; 2063e05df3b1SJaegeuk Kim goto next_step; 2064e05df3b1SJaegeuk Kim } 2065fd8c8cafSChao Yu out: 20663f5f4959SChao Yu if (nwritten) 2067b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2068db198ae0SChao Yu 2069db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2070db198ae0SChao Yu return -EIO; 20713f5f4959SChao Yu return ret; 2072e05df3b1SJaegeuk Kim } 2073e05df3b1SJaegeuk Kim 207450fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 207550fa53ecSChao Yu unsigned int seq_id) 2076cfe58f9dSJaegeuk Kim { 207750fa53ecSChao Yu struct fsync_node_entry *fn; 207850fa53ecSChao Yu struct page *page; 207950fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 208050fa53ecSChao Yu unsigned long flags; 208150fa53ecSChao Yu unsigned int cur_seq_id = 0; 2082cfe58f9dSJaegeuk Kim 208350fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 208450fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 208550fa53ecSChao Yu if (list_empty(head)) { 208650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 208750fa53ecSChao Yu break; 208850fa53ecSChao Yu } 208950fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 209050fa53ecSChao Yu if (fn->seq_id > seq_id) { 209150fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 209250fa53ecSChao Yu break; 209350fa53ecSChao Yu } 209450fa53ecSChao Yu cur_seq_id = fn->seq_id; 209550fa53ecSChao Yu page = fn->page; 209650fa53ecSChao Yu get_page(page); 209750fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20984ef51a8fSJaegeuk Kim 2099bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 210050fa53ecSChao Yu 210150fa53ecSChao Yu put_page(page); 2102cfe58f9dSJaegeuk Kim } 2103cfe58f9dSJaegeuk Kim 210408c3eab5SChristophe JAILLET return filemap_check_errors(NODE_MAPPING(sbi)); 2105cfe58f9dSJaegeuk Kim } 2106cfe58f9dSJaegeuk Kim 2107e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 2108e05df3b1SJaegeuk Kim struct writeback_control *wbc) 2109e05df3b1SJaegeuk Kim { 21104081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 21119dfa1bafSJaegeuk Kim struct blk_plug plug; 211250c8cdb3SJaegeuk Kim long diff; 2113e05df3b1SJaegeuk Kim 21140771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 21150771fcc7SChao Yu goto skip_write; 21160771fcc7SChao Yu 21174660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 21187bcd0cfaSChao Yu f2fs_balance_fs_bg(sbi, true); 2119e05df3b1SJaegeuk Kim 2120a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 2121812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 2122812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 2123812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 2124d3baf95dSJaegeuk Kim goto skip_write; 2125a7fdffbdSJaegeuk Kim 2126c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2127c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 212834415099SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) { 212934415099SChao Yu /* to avoid potential deadlock */ 213034415099SChao Yu if (current->plug) 213134415099SChao Yu blk_finish_plug(current->plug); 2132c29fd0c0SChao Yu goto skip_write; 213334415099SChao Yu } 2134c29fd0c0SChao Yu 2135d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2136d31c7c3fSYunlei He 213750c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 21389dfa1bafSJaegeuk Kim blk_start_plug(&plug); 21394d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 21409dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 214150c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2142c29fd0c0SChao Yu 2143c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2144c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2145e05df3b1SJaegeuk Kim return 0; 2146d3baf95dSJaegeuk Kim 2147d3baf95dSJaegeuk Kim skip_write: 2148d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2149d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2150d3baf95dSJaegeuk Kim return 0; 2151e05df3b1SJaegeuk Kim } 2152e05df3b1SJaegeuk Kim 2153cbc975b1SMatthew Wilcox (Oracle) static bool f2fs_dirty_node_folio(struct address_space *mapping, 2154cbc975b1SMatthew Wilcox (Oracle) struct folio *folio) 2155e05df3b1SJaegeuk Kim { 2156cbc975b1SMatthew Wilcox (Oracle) trace_f2fs_set_page_dirty(&folio->page, NODE); 215726c6b887SJaegeuk Kim 2158cbc975b1SMatthew Wilcox (Oracle) if (!folio_test_uptodate(folio)) 2159cbc975b1SMatthew Wilcox (Oracle) folio_mark_uptodate(folio); 216054c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 2161cbc975b1SMatthew Wilcox (Oracle) if (IS_INODE(&folio->page)) 216229c87793SMatthew Wilcox (Oracle) f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page); 216354c55c4eSWeichao Guo #endif 21649b7eadd9SShuqi Zhang if (filemap_dirty_folio(mapping, folio)) { 216529c87793SMatthew Wilcox (Oracle) inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 2166cbc975b1SMatthew Wilcox (Oracle) set_page_private_reference(&folio->page); 2167cbc975b1SMatthew Wilcox (Oracle) return true; 2168e05df3b1SJaegeuk Kim } 2169cbc975b1SMatthew Wilcox (Oracle) return false; 2170e05df3b1SJaegeuk Kim } 2171e05df3b1SJaegeuk Kim 21720a8165d7SJaegeuk Kim /* 2173e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2174e05df3b1SJaegeuk Kim */ 2175e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2176e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2177e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2178cbc975b1SMatthew Wilcox (Oracle) .dirty_folio = f2fs_dirty_node_folio, 217991503996SMatthew Wilcox (Oracle) .invalidate_folio = f2fs_invalidate_folio, 2180c26cd045SMatthew Wilcox (Oracle) .release_folio = f2fs_release_folio, 21811d5b9bd6SMatthew Wilcox (Oracle) .migrate_folio = filemap_migrate_folio, 2182e05df3b1SJaegeuk Kim }; 2183e05df3b1SJaegeuk Kim 21848a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 21858a7ed66aSJaegeuk Kim nid_t n) 2186e05df3b1SJaegeuk Kim { 21878a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 21883aa770a9SNamjae Jeon } 2189e05df3b1SJaegeuk Kim 21909a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2191b815bdc7SLiu Song struct free_nid *i) 2192e05df3b1SJaegeuk Kim { 2193b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2194eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 21955f029c04SYi Zhuang 2196eb0aa4b8SJaegeuk Kim if (err) 2197eb0aa4b8SJaegeuk Kim return err; 2198eb0aa4b8SJaegeuk Kim 2199b815bdc7SLiu Song nm_i->nid_cnt[FREE_NID]++; 22009a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2201eb0aa4b8SJaegeuk Kim return 0; 2202b8559dc2SChao Yu } 2203b8559dc2SChao Yu 22049a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2205a0761f63SFan Li struct free_nid *i, enum nid_state state) 2206b8559dc2SChao Yu { 2207b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2208b8559dc2SChao Yu 22099a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 22109a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 22119a4ffdf5SChao Yu if (state == FREE_NID) 2212e05df3b1SJaegeuk Kim list_del(&i->list); 22138a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2214e05df3b1SJaegeuk Kim } 2215e05df3b1SJaegeuk Kim 2216a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2217a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2218a0761f63SFan Li { 2219a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2220a0761f63SFan Li 2221a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2222a0761f63SFan Li i->state = dst_state; 2223a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2224a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2225a0761f63SFan Li 2226a0761f63SFan Li switch (dst_state) { 2227a0761f63SFan Li case PREALLOC_NID: 2228a0761f63SFan Li list_del(&i->list); 2229a0761f63SFan Li break; 2230a0761f63SFan Li case FREE_NID: 2231a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2232a0761f63SFan Li break; 2233a0761f63SFan Li default: 2234a0761f63SFan Li BUG_ON(1); 2235a0761f63SFan Li } 2236a0761f63SFan Li } 2237a0761f63SFan Li 223894c821fbSChao Yu bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi) 223994c821fbSChao Yu { 224094c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 224194c821fbSChao Yu unsigned int i; 224294c821fbSChao Yu bool ret = true; 224394c821fbSChao Yu 2244e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 224594c821fbSChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 224694c821fbSChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) { 224794c821fbSChao Yu ret = false; 224894c821fbSChao Yu break; 224994c821fbSChao Yu } 225094c821fbSChao Yu } 2251e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 225294c821fbSChao Yu 225394c821fbSChao Yu return ret; 225494c821fbSChao Yu } 225594c821fbSChao Yu 22565921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 22575921aaa1SLiFan bool set, bool build) 22585921aaa1SLiFan { 22595921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 22605921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 22615921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 22625921aaa1SLiFan 22635921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 22645921aaa1SLiFan return; 22655921aaa1SLiFan 22665921aaa1SLiFan if (set) { 22675921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22685921aaa1SLiFan return; 22695921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22705921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 22715921aaa1SLiFan } else { 22725921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22735921aaa1SLiFan return; 22745921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22755921aaa1SLiFan if (!build) 22765921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 22775921aaa1SLiFan } 22785921aaa1SLiFan } 22795921aaa1SLiFan 22804ac91242SChao Yu /* return if the nid is recognized as free */ 22815921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 22825921aaa1SLiFan nid_t nid, bool build, bool update) 2283e05df3b1SJaegeuk Kim { 22846fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 228530a61ddfSChao Yu struct free_nid *i, *e; 228659bbd474SJaegeuk Kim struct nat_entry *ne; 228730a61ddfSChao Yu int err = -EINVAL; 228830a61ddfSChao Yu bool ret = false; 22899198acebSJaegeuk Kim 22909198acebSJaegeuk Kim /* 0 nid should not be used */ 2291cfb271d4SChao Yu if (unlikely(nid == 0)) 22924ac91242SChao Yu return false; 229359bbd474SJaegeuk Kim 2294626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2295626bcf2bSChao Yu return false; 2296626bcf2bSChao Yu 229732410577SChao Yu i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL); 2298e05df3b1SJaegeuk Kim i->nid = nid; 22999a4ffdf5SChao Yu i->state = FREE_NID; 2300e05df3b1SJaegeuk Kim 23015921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2302769ec6e5SJaegeuk Kim 2303b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 230430a61ddfSChao Yu 230530a61ddfSChao Yu if (build) { 230630a61ddfSChao Yu /* 230730a61ddfSChao Yu * Thread A Thread B 230830a61ddfSChao Yu * - f2fs_create 230930a61ddfSChao Yu * - f2fs_new_inode 23104d57b86dSChao Yu * - f2fs_alloc_nid 23119a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 231230a61ddfSChao Yu * - f2fs_balance_fs_bg 23134d57b86dSChao Yu * - f2fs_build_free_nids 23144d57b86dSChao Yu * - __f2fs_build_free_nids 231530a61ddfSChao Yu * - scan_nat_page 231630a61ddfSChao Yu * - add_free_nid 231730a61ddfSChao Yu * - __lookup_nat_cache 231830a61ddfSChao Yu * - f2fs_add_link 23194d57b86dSChao Yu * - f2fs_init_inode_metadata 23204d57b86dSChao Yu * - f2fs_new_inode_page 23214d57b86dSChao Yu * - f2fs_new_node_page 232230a61ddfSChao Yu * - set_node_addr 23234d57b86dSChao Yu * - f2fs_alloc_nid_done 23249a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 23259a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 232630a61ddfSChao Yu */ 232730a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 232830a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 232930a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 233030a61ddfSChao Yu goto err_out; 233130a61ddfSChao Yu 233230a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 233330a61ddfSChao Yu if (e) { 23349a4ffdf5SChao Yu if (e->state == FREE_NID) 233530a61ddfSChao Yu ret = true; 233630a61ddfSChao Yu goto err_out; 233730a61ddfSChao Yu } 233830a61ddfSChao Yu } 233930a61ddfSChao Yu ret = true; 2340b815bdc7SLiu Song err = __insert_free_nid(sbi, i); 234130a61ddfSChao Yu err_out: 23425921aaa1SLiFan if (update) { 23435921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 23445921aaa1SLiFan if (!build) 23455921aaa1SLiFan nm_i->available_nids++; 23465921aaa1SLiFan } 2347b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2348769ec6e5SJaegeuk Kim radix_tree_preload_end(); 23495921aaa1SLiFan 235030a61ddfSChao Yu if (err) 2351e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 235230a61ddfSChao Yu return ret; 2353e05df3b1SJaegeuk Kim } 2354e05df3b1SJaegeuk Kim 2355b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2356e05df3b1SJaegeuk Kim { 2357b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2358e05df3b1SJaegeuk Kim struct free_nid *i; 2359cf0ee0f0SChao Yu bool need_free = false; 2360cf0ee0f0SChao Yu 2361b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23628a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 23639a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2364a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2365cf0ee0f0SChao Yu need_free = true; 2366e05df3b1SJaegeuk Kim } 2367b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2368cf0ee0f0SChao Yu 2369cf0ee0f0SChao Yu if (need_free) 2370cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2371e05df3b1SJaegeuk Kim } 2372e05df3b1SJaegeuk Kim 2373e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2374e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2375e05df3b1SJaegeuk Kim { 23766fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2377e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2378e05df3b1SJaegeuk Kim block_t blk_addr; 23794ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2380e05df3b1SJaegeuk Kim int i; 2381e05df3b1SJaegeuk Kim 238223380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 23834ac91242SChao Yu 2384e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2385e05df3b1SJaegeuk Kim 2386e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2387cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 238804431c44SJaegeuk Kim break; 238923d38844SHaicheng Li 2390e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2391e2374015SChao Yu 2392e2374015SChao Yu if (blk_addr == NEW_ADDR) 23930237975dSZhiguo Niu return -EFSCORRUPTED; 2394e2374015SChao Yu 23955921aaa1SLiFan if (blk_addr == NULL_ADDR) { 23965921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 23975921aaa1SLiFan } else { 2398346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 23995921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2400346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2401e05df3b1SJaegeuk Kim } 2402e05df3b1SJaegeuk Kim } 2403e2374015SChao Yu 2404e2374015SChao Yu return 0; 24055921aaa1SLiFan } 2406e05df3b1SJaegeuk Kim 24072fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 24084ac91242SChao Yu { 24094ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 24104ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 24112fbaa25fSChao Yu int i; 24124ac91242SChao Yu 24134ac91242SChao Yu down_read(&curseg->journal_rwsem); 24144ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 24154ac91242SChao Yu block_t addr; 24164ac91242SChao Yu nid_t nid; 24174ac91242SChao Yu 24184ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 24194ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 24204ac91242SChao Yu if (addr == NULL_ADDR) 24215921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24224ac91242SChao Yu else 24234ac91242SChao Yu remove_free_nid(sbi, nid); 24244ac91242SChao Yu } 24254ac91242SChao Yu up_read(&curseg->journal_rwsem); 24262fbaa25fSChao Yu } 24272fbaa25fSChao Yu 2428e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 24294ac91242SChao Yu { 24304ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 24314ac91242SChao Yu unsigned int i, idx; 243297456574SFan Li nid_t nid; 24334ac91242SChao Yu 2434e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 24354ac91242SChao Yu 24364ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 24374ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 24384ac91242SChao Yu continue; 24394ac91242SChao Yu if (!nm_i->free_nid_count[i]) 24404ac91242SChao Yu continue; 24414ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 244297456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 244397456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 244497456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 244597456574SFan Li break; 24464ac91242SChao Yu 24474ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 24485921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24494ac91242SChao Yu 24509a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 24514ac91242SChao Yu goto out; 24524ac91242SChao Yu } 24534ac91242SChao Yu } 24544ac91242SChao Yu out: 24552fbaa25fSChao Yu scan_curseg_cache(sbi); 24564ac91242SChao Yu 2457e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 24584ac91242SChao Yu } 24594ac91242SChao Yu 2460e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 24614d57b86dSChao Yu bool sync, bool mount) 2462e05df3b1SJaegeuk Kim { 2463e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2464e2374015SChao Yu int i = 0, ret; 246555008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2466e05df3b1SJaegeuk Kim 2467e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2468e9cdd307SYunlei He nid = 0; 2469e9cdd307SYunlei He 2470e2cab031SSahitya Tummala if (unlikely(nid % NAT_ENTRY_PER_BLOCK)) 2471e2cab031SSahitya Tummala nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK; 2472e2cab031SSahitya Tummala 247355008d84SJaegeuk Kim /* Enough entries */ 24749a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2475e2374015SChao Yu return 0; 2476e05df3b1SJaegeuk Kim 24774d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2478e2374015SChao Yu return 0; 2479e05df3b1SJaegeuk Kim 24804ac91242SChao Yu if (!mount) { 24814ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 24824ac91242SChao Yu scan_free_nid_bits(sbi); 24834ac91242SChao Yu 248474986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2485e2374015SChao Yu return 0; 248622ad0b6aSJaegeuk Kim } 248722ad0b6aSJaegeuk Kim 248855008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 24894d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 249026879fb1SChao Yu META_NAT, true); 2491e05df3b1SJaegeuk Kim 2492e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 2493a5131193SJaegeuk Kim 2494e05df3b1SJaegeuk Kim while (1) { 249566e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 249666e83361SYunlei He nm_i->nat_block_bitmap)) { 2497e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2498e05df3b1SJaegeuk Kim 2499edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2500edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2501edc55aafSJaegeuk Kim } else { 2502e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2503e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2504edc55aafSJaegeuk Kim } 2505e2374015SChao Yu 2506e2374015SChao Yu if (ret) { 2507e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 25080237975dSZhiguo Niu 25090237975dSZhiguo Niu if (ret == -EFSCORRUPTED) { 2510dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 25110237975dSZhiguo Niu set_sbi_flag(sbi, SBI_NEED_FSCK); 25120237975dSZhiguo Niu f2fs_handle_error(sbi, 25130237975dSZhiguo Niu ERROR_INCONSISTENT_NAT); 25140237975dSZhiguo Niu } 25150237975dSZhiguo Niu 2516edc55aafSJaegeuk Kim return ret; 2517e2374015SChao Yu } 251866e83361SYunlei He } 2519e05df3b1SJaegeuk Kim 2520e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2521cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2522e05df3b1SJaegeuk Kim nid = 0; 252355008d84SJaegeuk Kim 2524a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2525e05df3b1SJaegeuk Kim break; 2526e05df3b1SJaegeuk Kim } 2527e05df3b1SJaegeuk Kim 252855008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 252955008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2530e05df3b1SJaegeuk Kim 2531e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 25322fbaa25fSChao Yu scan_curseg_cache(sbi); 2533dfc08a12SChao Yu 2534e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 25352db2388fSChao Yu 25364d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2537ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2538e2374015SChao Yu 2539e2374015SChao Yu return 0; 2540e05df3b1SJaegeuk Kim } 2541e05df3b1SJaegeuk Kim 2542e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 25432411cf5bSChao Yu { 2544e2374015SChao Yu int ret; 2545e2374015SChao Yu 25462411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2547e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 25482411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2549e2374015SChao Yu 2550e2374015SChao Yu return ret; 25512411cf5bSChao Yu } 25522411cf5bSChao Yu 2553e05df3b1SJaegeuk Kim /* 2554e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2555e05df3b1SJaegeuk Kim * from second parameter of this function. 2556e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2557e05df3b1SJaegeuk Kim */ 25584d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2559e05df3b1SJaegeuk Kim { 2560e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2561e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2562e05df3b1SJaegeuk Kim retry: 2563c40e15a9SYangtao Li if (time_to_inject(sbi, FAULT_ALLOC_NID)) 2564cb78942bSJaegeuk Kim return false; 25657fa750a1SArnd Bergmann 2566b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2567e05df3b1SJaegeuk Kim 256804d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 256904d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 257004d47e67SChao Yu return false; 257104d47e67SChao Yu } 2572e05df3b1SJaegeuk Kim 25734d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 25744d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 25759a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 25769a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2577b8559dc2SChao Yu struct free_nid, list); 2578e05df3b1SJaegeuk Kim *nid = i->nid; 2579b8559dc2SChao Yu 2580a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 258104d47e67SChao Yu nm_i->available_nids--; 25824ac91242SChao Yu 2583346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 25844ac91242SChao Yu 2585b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2586e05df3b1SJaegeuk Kim return true; 2587e05df3b1SJaegeuk Kim } 2588b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 258955008d84SJaegeuk Kim 259055008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2591f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 259255008d84SJaegeuk Kim goto retry; 2593f84262b0SJaegeuk Kim return false; 259455008d84SJaegeuk Kim } 2595e05df3b1SJaegeuk Kim 25960a8165d7SJaegeuk Kim /* 25974d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2598e05df3b1SJaegeuk Kim */ 25994d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2600e05df3b1SJaegeuk Kim { 2601e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2602e05df3b1SJaegeuk Kim struct free_nid *i; 2603e05df3b1SJaegeuk Kim 2604b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26058a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2606b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2607a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2608b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2609cf0ee0f0SChao Yu 2610cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2611e05df3b1SJaegeuk Kim } 2612e05df3b1SJaegeuk Kim 26130a8165d7SJaegeuk Kim /* 26144d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2615e05df3b1SJaegeuk Kim */ 26164d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2617e05df3b1SJaegeuk Kim { 261849952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 261949952fa1SJaegeuk Kim struct free_nid *i; 2620cf0ee0f0SChao Yu bool need_free = false; 262149952fa1SJaegeuk Kim 262265985d93SJaegeuk Kim if (!nid) 262365985d93SJaegeuk Kim return; 262465985d93SJaegeuk Kim 2625b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26268a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2627b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2628b8559dc2SChao Yu 26294d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2630a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2631cf0ee0f0SChao Yu need_free = true; 263295630cbaSHaicheng Li } else { 2633a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 263495630cbaSHaicheng Li } 263504d47e67SChao Yu 263604d47e67SChao Yu nm_i->available_nids++; 263704d47e67SChao Yu 2638346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 26394ac91242SChao Yu 2640b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2641cf0ee0f0SChao Yu 2642cf0ee0f0SChao Yu if (need_free) 2643cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2644e05df3b1SJaegeuk Kim } 2645e05df3b1SJaegeuk Kim 26464d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 264731696580SChao Yu { 264831696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 264931696580SChao Yu int nr = nr_shrink; 265031696580SChao Yu 26519a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2652ad4edb83SJaegeuk Kim return 0; 2653ad4edb83SJaegeuk Kim 265431696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 265531696580SChao Yu return 0; 265631696580SChao Yu 2657042be373SChao Yu while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) { 2658042be373SChao Yu struct free_nid *i, *next; 2659042be373SChao Yu unsigned int batch = SHRINK_NID_BATCH_SIZE; 2660042be373SChao Yu 2661b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26629a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2663042be373SChao Yu if (!nr_shrink || !batch || 26649a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 266531696580SChao Yu break; 2666a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 266731696580SChao Yu kmem_cache_free(free_nid_slab, i); 266831696580SChao Yu nr_shrink--; 2669042be373SChao Yu batch--; 267031696580SChao Yu } 2671b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2672042be373SChao Yu } 2673042be373SChao Yu 267431696580SChao Yu mutex_unlock(&nm_i->build_lock); 267531696580SChao Yu 267631696580SChao Yu return nr - nr_shrink; 267731696580SChao Yu } 267831696580SChao Yu 26799627a7b3SChao Yu int f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 268028cdce04SChao Yu { 268128cdce04SChao Yu void *src_addr, *dst_addr; 268228cdce04SChao Yu size_t inline_size; 268328cdce04SChao Yu struct page *ipage; 268428cdce04SChao Yu struct f2fs_inode *ri; 268528cdce04SChao Yu 26864d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 26879627a7b3SChao Yu if (IS_ERR(ipage)) 26889627a7b3SChao Yu return PTR_ERR(ipage); 268928cdce04SChao Yu 2690e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 26911eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 269296dd0251SChao Yu if (!f2fs_has_inline_xattr(inode)) { 26931eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 269496dd0251SChao Yu stat_inc_inline_xattr(inode); 269596dd0251SChao Yu } 26961eca05aaSYunlei He } else { 269796dd0251SChao Yu if (f2fs_has_inline_xattr(inode)) { 269896dd0251SChao Yu stat_dec_inline_xattr(inode); 269991942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 270096dd0251SChao Yu } 2701e3b4d43fSJaegeuk Kim goto update_inode; 2702e3b4d43fSJaegeuk Kim } 2703e3b4d43fSJaegeuk Kim 27046afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 27056afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 270628cdce04SChao Yu inline_size = inline_xattr_size(inode); 270728cdce04SChao Yu 2708bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 270928cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2710e3b4d43fSJaegeuk Kim update_inode: 27114d57b86dSChao Yu f2fs_update_inode(inode, ipage); 271228cdce04SChao Yu f2fs_put_page(ipage, 1); 27139627a7b3SChao Yu return 0; 271428cdce04SChao Yu } 271528cdce04SChao Yu 27164d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2717abb2366cSJaegeuk Kim { 27184081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2719abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 272087905682SYunlei He nid_t new_xnid; 272187905682SYunlei He struct dnode_of_data dn; 2722abb2366cSJaegeuk Kim struct node_info ni; 2723d260081cSChao Yu struct page *xpage; 27247735730dSChao Yu int err; 2725abb2366cSJaegeuk Kim 2726abb2366cSJaegeuk Kim if (!prev_xnid) 2727abb2366cSJaegeuk Kim goto recover_xnid; 2728abb2366cSJaegeuk Kim 2729d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2730a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, prev_xnid, &ni, false); 27317735730dSChao Yu if (err) 27327735730dSChao Yu return err; 27337735730dSChao Yu 27344d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2735000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2736479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2737abb2366cSJaegeuk Kim 2738abb2366cSJaegeuk Kim recover_xnid: 2739d260081cSChao Yu /* 2: update xattr nid in inode */ 27404d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 274187905682SYunlei He return -ENOSPC; 274287905682SYunlei He 274387905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 27444d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 274587905682SYunlei He if (IS_ERR(xpage)) { 27464d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 274787905682SYunlei He return PTR_ERR(xpage); 274887905682SYunlei He } 274987905682SYunlei He 27504d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 27514d57b86dSChao Yu f2fs_update_inode_page(inode); 2752abb2366cSJaegeuk Kim 2753d260081cSChao Yu /* 3: update and set xattr node page dirty */ 2754*9de9f078SJaegeuk Kim if (page) 2755*9de9f078SJaegeuk Kim memcpy(F2FS_NODE(xpage), F2FS_NODE(page), 2756*9de9f078SJaegeuk Kim VALID_XATTR_BLOCK_SIZE); 2757d260081cSChao Yu 2758d260081cSChao Yu set_page_dirty(xpage); 2759d260081cSChao Yu f2fs_put_page(xpage, 1); 2760abb2366cSJaegeuk Kim 2761d260081cSChao Yu return 0; 2762abb2366cSJaegeuk Kim } 2763abb2366cSJaegeuk Kim 27644d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2765e05df3b1SJaegeuk Kim { 276658bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2767e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2768e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2769e05df3b1SJaegeuk Kim struct page *ipage; 27707735730dSChao Yu int err; 2771e05df3b1SJaegeuk Kim 2772a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, ino, &old_ni, false); 27737735730dSChao Yu if (err) 27747735730dSChao Yu return err; 2775e8271fa3SJaegeuk Kim 2776e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2777e8271fa3SJaegeuk Kim return -EINVAL; 2778e8ea9b3dSJaegeuk Kim retry: 2779300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2780e8ea9b3dSJaegeuk Kim if (!ipage) { 27814034247aSNeilBrown memalloc_retry_wait(GFP_NOFS); 2782e8ea9b3dSJaegeuk Kim goto retry; 2783e8ea9b3dSJaegeuk Kim } 2784e05df3b1SJaegeuk Kim 2785e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2786b8559dc2SChao Yu remove_free_nid(sbi, ino); 2787e05df3b1SJaegeuk Kim 2788237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2789e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2790e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2791ef2a0071SChao Yu set_cold_node(ipage, false); 2792e05df3b1SJaegeuk Kim 279358bfaf44SJaegeuk Kim src = F2FS_INODE(page); 279458bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2795e05df3b1SJaegeuk Kim 279636218b81SZheng Yongjun memcpy(dst, src, offsetof(struct f2fs_inode, i_ext)); 279758bfaf44SJaegeuk Kim dst->i_size = 0; 279858bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 279958bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 280058bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 28017a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 28025c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 28037a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 28046afc662eSChao Yu 28057beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 28066afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 28076afc662eSChao Yu i_inline_xattr_size)) 28086afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 28096afc662eSChao Yu 28107beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 28115c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 28125c57132eSChao Yu i_projid)) 28135c57132eSChao Yu dst->i_projid = src->i_projid; 28145cd1f387SChao Yu 28157beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 28165cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 28175cd1f387SChao Yu i_crtime_nsec)) { 28185cd1f387SChao Yu dst->i_crtime = src->i_crtime; 28195cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 28205cd1f387SChao Yu } 28215c57132eSChao Yu } 2822e05df3b1SJaegeuk Kim 2823e05df3b1SJaegeuk Kim new_ni = old_ni; 2824e05df3b1SJaegeuk Kim new_ni.ino = ino; 2825e05df3b1SJaegeuk Kim 28260abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 282765e5cd0aSJaegeuk Kim WARN_ON(1); 2828479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2829e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2830617deb8cSJaegeuk Kim set_page_dirty(ipage); 2831e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2832e05df3b1SJaegeuk Kim return 0; 2833e05df3b1SJaegeuk Kim } 2834e05df3b1SJaegeuk Kim 28357735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2836e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2837e05df3b1SJaegeuk Kim { 2838e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2839e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2840e05df3b1SJaegeuk Kim block_t addr; 28419ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2842e05df3b1SJaegeuk Kim 2843e05df3b1SJaegeuk Kim /* scan the node segment */ 2844e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2845e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2846e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2847e05df3b1SJaegeuk Kim 28489ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 28495f7136dbSMatthew Wilcox (Oracle) nrpages = bio_max_segs(last_offset - i); 2850393ff91fSJaegeuk Kim 28519af0ff1cSChao Yu /* readahead node pages */ 28524d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 28539af0ff1cSChao Yu 28549ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 28554d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2856393ff91fSJaegeuk Kim 28577735730dSChao Yu if (IS_ERR(page)) 28587735730dSChao Yu return PTR_ERR(page); 28597735730dSChao Yu 28609ecf4b80SChao Yu rn = F2FS_NODE(page); 2861393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2862393ff91fSJaegeuk Kim sum_entry->version = 0; 2863393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 28649af0ff1cSChao Yu sum_entry++; 28659ecf4b80SChao Yu f2fs_put_page(page, 1); 28669af0ff1cSChao Yu } 2867bac4eef6SChao Yu 28689ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2869bac4eef6SChao Yu addr + nrpages); 28709af0ff1cSChao Yu } 28717735730dSChao Yu return 0; 2872e05df3b1SJaegeuk Kim } 2873e05df3b1SJaegeuk Kim 2874aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2875e05df3b1SJaegeuk Kim { 2876e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2877e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2878b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2879e05df3b1SJaegeuk Kim int i; 2880e05df3b1SJaegeuk Kim 2881b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2882dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2883e05df3b1SJaegeuk Kim struct nat_entry *ne; 2884e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2885dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2886e05df3b1SJaegeuk Kim 2887b862676eSChao Yu if (f2fs_check_nid_range(sbi, nid)) 2888b862676eSChao Yu continue; 2889b862676eSChao Yu 2890dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 28919be32d72SJaegeuk Kim 2892e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2893e05df3b1SJaegeuk Kim if (!ne) { 289432410577SChao Yu ne = __alloc_nat_entry(sbi, nid, true); 289512f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 28969be32d72SJaegeuk Kim } 289704d47e67SChao Yu 289804d47e67SChao Yu /* 289904d47e67SChao Yu * if a free nat in journal has not been used after last 290004d47e67SChao Yu * checkpoint, we should remove it from available nids, 290104d47e67SChao Yu * since later we will add it again. 290204d47e67SChao Yu */ 290304d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 290404d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 290504d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 290604d47e67SChao Yu nm_i->available_nids--; 290704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 290804d47e67SChao Yu } 290904d47e67SChao Yu 2910e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2911e05df3b1SJaegeuk Kim } 2912dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2913b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2914e05df3b1SJaegeuk Kim } 2915e05df3b1SJaegeuk Kim 2916309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2917309cc2b6SJaegeuk Kim struct list_head *head, int max) 2918e05df3b1SJaegeuk Kim { 2919309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2920e05df3b1SJaegeuk Kim 2921309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2922309cc2b6SJaegeuk Kim goto add_out; 2923e05df3b1SJaegeuk Kim 2924309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2925309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2926309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2927309cc2b6SJaegeuk Kim return; 2928309cc2b6SJaegeuk Kim } 2929309cc2b6SJaegeuk Kim } 2930309cc2b6SJaegeuk Kim add_out: 2931309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2932aec71382SChao Yu } 2933aec71382SChao Yu 293494c821fbSChao Yu static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs, 293594c821fbSChao Yu unsigned int valid) 293694c821fbSChao Yu { 293794c821fbSChao Yu if (valid == 0) { 293894c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->empty_nat_bits); 293994c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 294094c821fbSChao Yu return; 294194c821fbSChao Yu } 294294c821fbSChao Yu 294394c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->empty_nat_bits); 294494c821fbSChao Yu if (valid == NAT_ENTRY_PER_BLOCK) 294594c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->full_nat_bits); 294694c821fbSChao Yu else 294794c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 294894c821fbSChao Yu } 294994c821fbSChao Yu 295094c821fbSChao Yu static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 295122ad0b6aSJaegeuk Kim struct page *page) 295222ad0b6aSJaegeuk Kim { 295322ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 295422ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 295522ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 295622ad0b6aSJaegeuk Kim int valid = 0; 295737a0ab2aSFan Li int i = 0; 295822ad0b6aSJaegeuk Kim 295994c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 296022ad0b6aSJaegeuk Kim return; 296122ad0b6aSJaegeuk Kim 296237a0ab2aSFan Li if (nat_index == 0) { 296337a0ab2aSFan Li valid = 1; 296437a0ab2aSFan Li i = 1; 296537a0ab2aSFan Li } 296637a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 296736af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 296822ad0b6aSJaegeuk Kim valid++; 296922ad0b6aSJaegeuk Kim } 297094c821fbSChao Yu 297194c821fbSChao Yu __update_nat_bits(nm_i, nat_index, valid); 297222ad0b6aSJaegeuk Kim } 297322ad0b6aSJaegeuk Kim 297494c821fbSChao Yu void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi) 297594c821fbSChao Yu { 297694c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 297794c821fbSChao Yu unsigned int nat_ofs; 297894c821fbSChao Yu 2979e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 298094c821fbSChao Yu 298194c821fbSChao Yu for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) { 298294c821fbSChao Yu unsigned int valid = 0, nid_ofs = 0; 298394c821fbSChao Yu 298494c821fbSChao Yu /* handle nid zero due to it should never be used */ 298594c821fbSChao Yu if (unlikely(nat_ofs == 0)) { 298694c821fbSChao Yu valid = 1; 298794c821fbSChao Yu nid_ofs = 1; 298894c821fbSChao Yu } 298994c821fbSChao Yu 299094c821fbSChao Yu for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) { 299194c821fbSChao Yu if (!test_bit_le(nid_ofs, 299294c821fbSChao Yu nm_i->free_nid_bitmap[nat_ofs])) 299394c821fbSChao Yu valid++; 299494c821fbSChao Yu } 299594c821fbSChao Yu 299694c821fbSChao Yu __update_nat_bits(nm_i, nat_ofs, valid); 299794c821fbSChao Yu } 299894c821fbSChao Yu 2999e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 300022ad0b6aSJaegeuk Kim } 300122ad0b6aSJaegeuk Kim 3002edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 300322ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 3004309cc2b6SJaegeuk Kim { 3005309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 3006b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 3007309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 3008309cc2b6SJaegeuk Kim bool to_journal = true; 3009309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 3010309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 3011309cc2b6SJaegeuk Kim struct page *page = NULL; 3012aec71382SChao Yu 3013aec71382SChao Yu /* 3014aec71382SChao Yu * there are two steps to flush nat entries: 3015aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 3016aec71382SChao Yu * #2, flush nat entries to nat page. 3017aec71382SChao Yu */ 301894c821fbSChao Yu if ((cpc->reason & CP_UMOUNT) || 301922ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 3020aec71382SChao Yu to_journal = false; 3021aec71382SChao Yu 3022aec71382SChao Yu if (to_journal) { 3023b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 3024aec71382SChao Yu } else { 3025e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 3026edc55aafSJaegeuk Kim if (IS_ERR(page)) 3027edc55aafSJaegeuk Kim return PTR_ERR(page); 3028edc55aafSJaegeuk Kim 3029e05df3b1SJaegeuk Kim nat_blk = page_address(page); 30309850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 3031e05df3b1SJaegeuk Kim } 3032e05df3b1SJaegeuk Kim 3033aec71382SChao Yu /* flush dirty nats in nat entry set */ 3034309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 3035aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 3036aec71382SChao Yu nid_t nid = nat_get_nid(ne); 3037aec71382SChao Yu int offset; 3038aec71382SChao Yu 3039febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 3040309cc2b6SJaegeuk Kim 3041aec71382SChao Yu if (to_journal) { 30424d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 3043aec71382SChao Yu NAT_JOURNAL, nid, 1); 30449850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 3045dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 3046dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 3047aec71382SChao Yu } else { 3048aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 3049aec71382SChao Yu } 3050aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 305188bd02c9SJaegeuk Kim nat_reset_flag(ne); 30520b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 305304d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 30545921aaa1SLiFan add_free_nid(sbi, nid, false, true); 30554ac91242SChao Yu } else { 30564ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 3057346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 305804d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 305904d47e67SChao Yu } 3060e05df3b1SJaegeuk Kim } 3061aec71382SChao Yu 306222ad0b6aSJaegeuk Kim if (to_journal) { 3063b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 306422ad0b6aSJaegeuk Kim } else { 306594c821fbSChao Yu update_nat_bits(sbi, start_nid, page); 3066e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 306722ad0b6aSJaegeuk Kim } 3068aec71382SChao Yu 306959c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 307059c9081bSYunlei He if (!set->entry_cnt) { 3071309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 3072309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 3073309cc2b6SJaegeuk Kim } 3074edc55aafSJaegeuk Kim return 0; 307559c9081bSYunlei He } 3076aec71382SChao Yu 3077309cc2b6SJaegeuk Kim /* 3078309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 3079309cc2b6SJaegeuk Kim */ 3080edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 3081309cc2b6SJaegeuk Kim { 3082309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3083309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 3084b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 3085c31e4961SChao Yu struct nat_entry_set *setvec[NAT_VEC_SIZE]; 3086309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 3087309cc2b6SJaegeuk Kim unsigned int found; 3088309cc2b6SJaegeuk Kim nid_t set_idx = 0; 3089309cc2b6SJaegeuk Kim LIST_HEAD(sets); 3090edc55aafSJaegeuk Kim int err = 0; 3091309cc2b6SJaegeuk Kim 3092a95ba66aSJaegeuk Kim /* 3093a95ba66aSJaegeuk Kim * during unmount, let's flush nat_bits before checking 3094a95ba66aSJaegeuk Kim * nat_cnt[DIRTY_NAT]. 3095a95ba66aSJaegeuk Kim */ 309694c821fbSChao Yu if (cpc->reason & CP_UMOUNT) { 3097e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 30987f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 3099e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 31007f2ecdd8SJaegeuk Kim } 31017f2ecdd8SJaegeuk Kim 3102a95ba66aSJaegeuk Kim if (!nm_i->nat_cnt[DIRTY_NAT]) 3103edc55aafSJaegeuk Kim return 0; 3104a5131193SJaegeuk Kim 3105e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3106a5131193SJaegeuk Kim 3107309cc2b6SJaegeuk Kim /* 3108309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 3109309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 3110309cc2b6SJaegeuk Kim * into nat entry set. 3111309cc2b6SJaegeuk Kim */ 311294c821fbSChao Yu if (cpc->reason & CP_UMOUNT || 3113a95ba66aSJaegeuk Kim !__has_cursum_space(journal, 3114a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL)) 3115309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 3116309cc2b6SJaegeuk Kim 3117309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 3118c31e4961SChao Yu set_idx, NAT_VEC_SIZE, setvec))) { 3119309cc2b6SJaegeuk Kim unsigned idx; 31205f029c04SYi Zhuang 3121309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 3122309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 3123309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 3124dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 3125309cc2b6SJaegeuk Kim } 3126309cc2b6SJaegeuk Kim 3127309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 3128edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 3129edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 3130edc55aafSJaegeuk Kim if (err) 3131edc55aafSJaegeuk Kim break; 3132edc55aafSJaegeuk Kim } 3133309cc2b6SJaegeuk Kim 3134e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 313559c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 3136edc55aafSJaegeuk Kim 3137edc55aafSJaegeuk Kim return err; 3138e05df3b1SJaegeuk Kim } 3139e05df3b1SJaegeuk Kim 314022ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 314122ad0b6aSJaegeuk Kim { 314222ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 314322ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 314422ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 314522ad0b6aSJaegeuk Kim unsigned int i; 314622ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 314722ad0b6aSJaegeuk Kim block_t nat_bits_addr; 314822ad0b6aSJaegeuk Kim 3149df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 31500b6d4ca0SEric Biggers nm_i->nat_bits = f2fs_kvzalloc(sbi, 3151acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 315222ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 315322ad0b6aSJaegeuk Kim return -ENOMEM; 315422ad0b6aSJaegeuk Kim 315594c821fbSChao Yu nm_i->full_nat_bits = nm_i->nat_bits + 8; 315694c821fbSChao Yu nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 315794c821fbSChao Yu 315894c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 315994c821fbSChao Yu return 0; 316094c821fbSChao Yu 316122ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 316222ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 316322ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 31647735730dSChao Yu struct page *page; 31657735730dSChao Yu 31667735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 31673b30eb19SChao Yu if (IS_ERR(page)) 31687735730dSChao Yu return PTR_ERR(page); 316922ad0b6aSJaegeuk Kim 317022ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 317122ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 317222ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 317322ad0b6aSJaegeuk Kim } 317422ad0b6aSJaegeuk Kim 3175ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 317622ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 317794c821fbSChao Yu clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG); 317894c821fbSChao Yu f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)", 317994c821fbSChao Yu cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits)); 318022ad0b6aSJaegeuk Kim return 0; 318122ad0b6aSJaegeuk Kim } 318222ad0b6aSJaegeuk Kim 3183dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 318422ad0b6aSJaegeuk Kim return 0; 318522ad0b6aSJaegeuk Kim } 318622ad0b6aSJaegeuk Kim 3187bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 31887041d5d2SChao Yu { 31897041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31907041d5d2SChao Yu unsigned int i = 0; 31917041d5d2SChao Yu nid_t nid, last_nid; 31927041d5d2SChao Yu 319394c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 31947041d5d2SChao Yu return; 31957041d5d2SChao Yu 31967041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31977041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 31987041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31997041d5d2SChao Yu break; 32007041d5d2SChao Yu 32017041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 32027041d5d2SChao Yu 32037041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 3204f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 32057041d5d2SChao Yu 3206346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 32077041d5d2SChao Yu for (; nid < last_nid; nid++) 3208346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 3209346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 32107041d5d2SChao Yu } 32117041d5d2SChao Yu 32127041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 32137041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 32147041d5d2SChao Yu if (i >= nm_i->nat_blocks) 32157041d5d2SChao Yu break; 32167041d5d2SChao Yu 32177041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 32187041d5d2SChao Yu } 32197041d5d2SChao Yu } 32207041d5d2SChao Yu 3221e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3222e05df3b1SJaegeuk Kim { 3223e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3224e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3225e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 322622ad0b6aSJaegeuk Kim unsigned int nat_segs; 322722ad0b6aSJaegeuk Kim int err; 3228e05df3b1SJaegeuk Kim 3229e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3230e05df3b1SJaegeuk Kim 3231e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3232e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 323322ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 323422ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 32357ee0eeabSJaegeuk Kim 3236b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 323704d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 323827cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 32399a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 32409a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3241cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3242ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 32432304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 324447c8ebccSJaegeuk Kim nm_i->max_rf_node_blocks = DEF_RF_NODE_BLOCKS; 3245e05df3b1SJaegeuk Kim 32468a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 32479a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3248769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3249769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3250e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 325122969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3252e05df3b1SJaegeuk Kim 3253e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3254b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3255e4544b63STim Murray init_f2fs_rwsem(&nm_i->nat_tree_lock); 3256e05df3b1SJaegeuk Kim 3257e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 325879b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3259e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 326079b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 326179b5793bSAlexandru Gheorghiu GFP_KERNEL); 326279b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 326379b5793bSAlexandru Gheorghiu return -ENOMEM; 3264599a09b2SChao Yu 326522ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 326622ad0b6aSJaegeuk Kim if (err) 326722ad0b6aSJaegeuk Kim return err; 326822ad0b6aSJaegeuk Kim 3269599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3270599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3271599a09b2SChao Yu GFP_KERNEL); 3272599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3273599a09b2SChao Yu return -ENOMEM; 3274599a09b2SChao Yu #endif 3275599a09b2SChao Yu 3276e05df3b1SJaegeuk Kim return 0; 3277e05df3b1SJaegeuk Kim } 3278e05df3b1SJaegeuk Kim 32799f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 32804ac91242SChao Yu { 32814ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3282bb1105e4SJaegeuk Kim int i; 32834ac91242SChao Yu 3284026f0507SKees Cook nm_i->free_nid_bitmap = 32850b6d4ca0SEric Biggers f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *), 3286026f0507SKees Cook nm_i->nat_blocks), 3287026f0507SKees Cook GFP_KERNEL); 32884ac91242SChao Yu if (!nm_i->free_nid_bitmap) 32894ac91242SChao Yu return -ENOMEM; 32904ac91242SChao Yu 3291bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3292bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3293e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 329468c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3295bb1105e4SJaegeuk Kim return -ENOMEM; 3296bb1105e4SJaegeuk Kim } 3297bb1105e4SJaegeuk Kim 3298628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 32994ac91242SChao Yu GFP_KERNEL); 33004ac91242SChao Yu if (!nm_i->nat_block_bitmap) 33014ac91242SChao Yu return -ENOMEM; 3302586d1492SChao Yu 33039d2a789cSKees Cook nm_i->free_nid_count = 33049d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 33059d2a789cSKees Cook nm_i->nat_blocks), 33069d2a789cSKees Cook GFP_KERNEL); 3307586d1492SChao Yu if (!nm_i->free_nid_count) 3308586d1492SChao Yu return -ENOMEM; 33094ac91242SChao Yu return 0; 33104ac91242SChao Yu } 33114ac91242SChao Yu 33124d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3313e05df3b1SJaegeuk Kim { 3314e05df3b1SJaegeuk Kim int err; 3315e05df3b1SJaegeuk Kim 3316acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3317acbf054dSChao Yu GFP_KERNEL); 3318e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3319e05df3b1SJaegeuk Kim return -ENOMEM; 3320e05df3b1SJaegeuk Kim 3321e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3322e05df3b1SJaegeuk Kim if (err) 3323e05df3b1SJaegeuk Kim return err; 3324e05df3b1SJaegeuk Kim 33254ac91242SChao Yu err = init_free_nid_cache(sbi); 33264ac91242SChao Yu if (err) 33274ac91242SChao Yu return err; 33284ac91242SChao Yu 33297041d5d2SChao Yu /* load free nid status from nat_bits table */ 33307041d5d2SChao Yu load_free_nid_bitmap(sbi); 33317041d5d2SChao Yu 3332e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3333e05df3b1SJaegeuk Kim } 3334e05df3b1SJaegeuk Kim 33354d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3336e05df3b1SJaegeuk Kim { 3337e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3338e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3339c31e4961SChao Yu void *vec[NAT_VEC_SIZE]; 3340c31e4961SChao Yu struct nat_entry **natvec = (struct nat_entry **)vec; 3341c31e4961SChao Yu struct nat_entry_set **setvec = (struct nat_entry_set **)vec; 3342e05df3b1SJaegeuk Kim nid_t nid = 0; 3343e05df3b1SJaegeuk Kim unsigned int found; 3344e05df3b1SJaegeuk Kim 3345e05df3b1SJaegeuk Kim if (!nm_i) 3346e05df3b1SJaegeuk Kim return; 3347e05df3b1SJaegeuk Kim 3348e05df3b1SJaegeuk Kim /* destroy free nid list */ 3349b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 33509a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3351a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3352b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3353cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3354b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3355e05df3b1SJaegeuk Kim } 33569a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 33579a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 33589a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3359b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3360e05df3b1SJaegeuk Kim 3361e05df3b1SJaegeuk Kim /* destroy nat cache */ 3362e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3363e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3364c31e4961SChao Yu nid, NAT_VEC_SIZE, natvec))) { 3365e05df3b1SJaegeuk Kim unsigned idx; 33667aed0d45SJaegeuk Kim 3367b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 336822969158SChao Yu for (idx = 0; idx < found; idx++) { 336922969158SChao Yu spin_lock(&nm_i->nat_list_lock); 337022969158SChao Yu list_del(&natvec[idx]->list); 337122969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 337222969158SChao Yu 3373b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3374e05df3b1SJaegeuk Kim } 337522969158SChao Yu } 3376a95ba66aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]); 33777aed0d45SJaegeuk Kim 33787aed0d45SJaegeuk Kim /* destroy nat set cache */ 33797aed0d45SJaegeuk Kim nid = 0; 3380c31e4961SChao Yu memset(vec, 0, sizeof(void *) * NAT_VEC_SIZE); 33817aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 3382c31e4961SChao Yu nid, NAT_VEC_SIZE, setvec))) { 33837aed0d45SJaegeuk Kim unsigned idx; 33847aed0d45SJaegeuk Kim 33857aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 33867aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 33877aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 33887aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 33897aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 33907aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 33917aed0d45SJaegeuk Kim } 33927aed0d45SJaegeuk Kim } 3393e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 3394e05df3b1SJaegeuk Kim 33954ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3396bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3397bb1105e4SJaegeuk Kim int i; 3398bb1105e4SJaegeuk Kim 3399bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3400bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 34015222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3402bb1105e4SJaegeuk Kim } 3403586d1492SChao Yu kvfree(nm_i->free_nid_count); 34044ac91242SChao Yu 34055222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 34065222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3407599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 34085222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3409599a09b2SChao Yu #endif 3410e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3411c8eb7024SChao Yu kfree(nm_i); 3412e05df3b1SJaegeuk Kim } 3413e05df3b1SJaegeuk Kim 34144d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3415e05df3b1SJaegeuk Kim { 341698510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3417e8512d2eSGu Zheng sizeof(struct nat_entry)); 3418e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3419aec71382SChao Yu goto fail; 3420e05df3b1SJaegeuk Kim 342198510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3422e8512d2eSGu Zheng sizeof(struct free_nid)); 3423aec71382SChao Yu if (!free_nid_slab) 3424ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3425aec71382SChao Yu 342698510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3427aec71382SChao Yu sizeof(struct nat_entry_set)); 3428aec71382SChao Yu if (!nat_entry_set_slab) 3429ce3e6d25SMarkus Elfring goto destroy_free_nid; 343050fa53ecSChao Yu 343198510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 343250fa53ecSChao Yu sizeof(struct fsync_node_entry)); 343350fa53ecSChao Yu if (!fsync_node_entry_slab) 343450fa53ecSChao Yu goto destroy_nat_entry_set; 3435e05df3b1SJaegeuk Kim return 0; 3436aec71382SChao Yu 343750fa53ecSChao Yu destroy_nat_entry_set: 343850fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3439ce3e6d25SMarkus Elfring destroy_free_nid: 3440aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3441ce3e6d25SMarkus Elfring destroy_nat_entry: 3442aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3443aec71382SChao Yu fail: 3444aec71382SChao Yu return -ENOMEM; 3445e05df3b1SJaegeuk Kim } 3446e05df3b1SJaegeuk Kim 34474d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3448e05df3b1SJaegeuk Kim { 344950fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3450aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3451e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3452e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3453e05df3b1SJaegeuk Kim } 3454