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 { 928e05df3b1SJaegeuk Kim struct page *page; 9297735730dSChao Yu int err; 930e05df3b1SJaegeuk Kim 931e05df3b1SJaegeuk Kim if (dn->nid == 0) 932e05df3b1SJaegeuk Kim return 1; 933e05df3b1SJaegeuk Kim 934e05df3b1SJaegeuk Kim /* get direct node */ 9354d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 93645586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 937e05df3b1SJaegeuk Kim return 1; 938e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 939e05df3b1SJaegeuk Kim return PTR_ERR(page); 940e05df3b1SJaegeuk Kim 941e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 942e05df3b1SJaegeuk Kim dn->node_page = page; 943e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 9444d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 9457735730dSChao Yu err = truncate_node(dn); 9467735730dSChao Yu if (err) 9477735730dSChao Yu return err; 9487735730dSChao Yu 949e05df3b1SJaegeuk Kim return 1; 950e05df3b1SJaegeuk Kim } 951e05df3b1SJaegeuk Kim 952e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 953e05df3b1SJaegeuk Kim int ofs, int depth) 954e05df3b1SJaegeuk Kim { 955e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 956e05df3b1SJaegeuk Kim struct page *page; 957e05df3b1SJaegeuk Kim struct f2fs_node *rn; 958e05df3b1SJaegeuk Kim nid_t child_nid; 959e05df3b1SJaegeuk Kim unsigned int child_nofs; 960e05df3b1SJaegeuk Kim int freed = 0; 961e05df3b1SJaegeuk Kim int i, ret; 962e05df3b1SJaegeuk Kim 963e05df3b1SJaegeuk Kim if (dn->nid == 0) 964e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 965e05df3b1SJaegeuk Kim 96651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 96751dd6249SNamjae Jeon 9684d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 96951dd6249SNamjae Jeon if (IS_ERR(page)) { 97051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 971e05df3b1SJaegeuk Kim return PTR_ERR(page); 97251dd6249SNamjae Jeon } 973e05df3b1SJaegeuk Kim 9744d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 97579344efbSJaegeuk Kim 97645590710SGu Zheng rn = F2FS_NODE(page); 977e05df3b1SJaegeuk Kim if (depth < 3) { 978e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 979e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 980e05df3b1SJaegeuk Kim if (child_nid == 0) 981e05df3b1SJaegeuk Kim continue; 982e05df3b1SJaegeuk Kim rdn.nid = child_nid; 983e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 984e05df3b1SJaegeuk Kim if (ret < 0) 985e05df3b1SJaegeuk Kim goto out_err; 98612719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 98793bae099SJaegeuk Kim dn->node_changed = true; 988e05df3b1SJaegeuk Kim } 989e05df3b1SJaegeuk Kim } else { 990e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 991e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 992e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 993e05df3b1SJaegeuk Kim if (child_nid == 0) { 994e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 995e05df3b1SJaegeuk Kim continue; 996e05df3b1SJaegeuk Kim } 997e05df3b1SJaegeuk Kim rdn.nid = child_nid; 998e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 999e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 100012719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 100193bae099SJaegeuk Kim dn->node_changed = true; 1002e05df3b1SJaegeuk Kim child_nofs += ret; 1003e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 1004e05df3b1SJaegeuk Kim goto out_err; 1005e05df3b1SJaegeuk Kim } 1006e05df3b1SJaegeuk Kim } 1007e05df3b1SJaegeuk Kim freed = child_nofs; 1008e05df3b1SJaegeuk Kim } 1009e05df3b1SJaegeuk Kim 1010e05df3b1SJaegeuk Kim if (!ofs) { 1011e05df3b1SJaegeuk Kim /* remove current indirect node */ 1012e05df3b1SJaegeuk Kim dn->node_page = page; 10137735730dSChao Yu ret = truncate_node(dn); 10147735730dSChao Yu if (ret) 10157735730dSChao Yu goto out_err; 1016e05df3b1SJaegeuk Kim freed++; 1017e05df3b1SJaegeuk Kim } else { 1018e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1019e05df3b1SJaegeuk Kim } 102051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 1021e05df3b1SJaegeuk Kim return freed; 1022e05df3b1SJaegeuk Kim 1023e05df3b1SJaegeuk Kim out_err: 1024e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 102551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 1026e05df3b1SJaegeuk Kim return ret; 1027e05df3b1SJaegeuk Kim } 1028e05df3b1SJaegeuk Kim 1029e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 1030e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 1031e05df3b1SJaegeuk Kim { 1032e05df3b1SJaegeuk Kim struct page *pages[2]; 1033e05df3b1SJaegeuk Kim nid_t nid[3]; 1034e05df3b1SJaegeuk Kim nid_t child_nid; 1035e05df3b1SJaegeuk Kim int err = 0; 1036e05df3b1SJaegeuk Kim int i; 1037e05df3b1SJaegeuk Kim int idx = depth - 2; 1038e05df3b1SJaegeuk Kim 1039e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1040e05df3b1SJaegeuk Kim if (!nid[0]) 1041e05df3b1SJaegeuk Kim return 0; 1042e05df3b1SJaegeuk Kim 1043e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1044a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1045e1c42045Sarter97 /* reference count'll be increased */ 10464d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1047e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1048e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1049a225dca3Sshifei10.ge idx = i - 1; 1050e05df3b1SJaegeuk Kim goto fail; 1051e05df3b1SJaegeuk Kim } 1052e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1053e05df3b1SJaegeuk Kim } 1054e05df3b1SJaegeuk Kim 10554d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 105679344efbSJaegeuk Kim 1057e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1058a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1059e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1060e05df3b1SJaegeuk Kim if (!child_nid) 1061e05df3b1SJaegeuk Kim continue; 1062e05df3b1SJaegeuk Kim dn->nid = child_nid; 1063e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1064e05df3b1SJaegeuk Kim if (err < 0) 1065e05df3b1SJaegeuk Kim goto fail; 106612719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 106793bae099SJaegeuk Kim dn->node_changed = true; 1068e05df3b1SJaegeuk Kim } 1069e05df3b1SJaegeuk Kim 1070a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1071e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1072e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10737735730dSChao Yu err = truncate_node(dn); 10747735730dSChao Yu if (err) 10757735730dSChao Yu goto fail; 1076e05df3b1SJaegeuk Kim } else { 1077e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1078e05df3b1SJaegeuk Kim } 1079e05df3b1SJaegeuk Kim offset[idx]++; 1080a225dca3Sshifei10.ge offset[idx + 1] = 0; 1081a225dca3Sshifei10.ge idx--; 1082e05df3b1SJaegeuk Kim fail: 1083a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1084e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 108551dd6249SNamjae Jeon 108651dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 108751dd6249SNamjae Jeon 1088e05df3b1SJaegeuk Kim return err; 1089e05df3b1SJaegeuk Kim } 1090e05df3b1SJaegeuk Kim 10910a8165d7SJaegeuk Kim /* 1092e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1093e05df3b1SJaegeuk Kim */ 10944d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1095e05df3b1SJaegeuk Kim { 10964081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1097e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1098e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10997dd690c8SJaegeuk Kim unsigned int nofs = 0; 110058bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1101e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1102e05df3b1SJaegeuk Kim struct page *page; 1103e05df3b1SJaegeuk Kim 110451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 110551dd6249SNamjae Jeon 110681ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 11079039d835SYubo Feng if (level < 0) { 11089039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1109adb6dc19SJaegeuk Kim return level; 11109039d835SYubo Feng } 1111ff373558SJaegeuk Kim 11124d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 111351dd6249SNamjae Jeon if (IS_ERR(page)) { 111451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1115e05df3b1SJaegeuk Kim return PTR_ERR(page); 111651dd6249SNamjae Jeon } 1117e05df3b1SJaegeuk Kim 1118e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1119e05df3b1SJaegeuk Kim unlock_page(page); 1120e05df3b1SJaegeuk Kim 112158bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1122e05df3b1SJaegeuk Kim switch (level) { 1123e05df3b1SJaegeuk Kim case 0: 1124e05df3b1SJaegeuk Kim case 1: 1125e05df3b1SJaegeuk Kim nofs = noffset[1]; 1126e05df3b1SJaegeuk Kim break; 1127e05df3b1SJaegeuk Kim case 2: 1128e05df3b1SJaegeuk Kim nofs = noffset[1]; 1129e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1130e05df3b1SJaegeuk Kim goto skip_partial; 113158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1132e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1133e05df3b1SJaegeuk Kim goto fail; 1134e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1135e05df3b1SJaegeuk Kim break; 1136e05df3b1SJaegeuk Kim case 3: 1137e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1138e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1139e05df3b1SJaegeuk Kim goto skip_partial; 114058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1141e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1142e05df3b1SJaegeuk Kim goto fail; 1143e05df3b1SJaegeuk Kim break; 1144e05df3b1SJaegeuk Kim default: 1145e05df3b1SJaegeuk Kim BUG(); 1146e05df3b1SJaegeuk Kim } 1147e05df3b1SJaegeuk Kim 1148e05df3b1SJaegeuk Kim skip_partial: 1149e05df3b1SJaegeuk Kim while (cont) { 115058bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1151e05df3b1SJaegeuk Kim switch (offset[0]) { 1152e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1153e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1154e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1155e05df3b1SJaegeuk Kim break; 1156e05df3b1SJaegeuk Kim 1157e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1158e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1159e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1160e05df3b1SJaegeuk Kim break; 1161e05df3b1SJaegeuk Kim 1162e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1163e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1164e05df3b1SJaegeuk Kim cont = 0; 1165e05df3b1SJaegeuk Kim break; 1166e05df3b1SJaegeuk Kim 1167e05df3b1SJaegeuk Kim default: 1168e05df3b1SJaegeuk Kim BUG(); 1169e05df3b1SJaegeuk Kim } 1170e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1171e05df3b1SJaegeuk Kim goto fail; 1172e05df3b1SJaegeuk Kim if (offset[1] == 0 && 117358bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1174e05df3b1SJaegeuk Kim lock_page(page); 1175ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1176bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 117758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1178e05df3b1SJaegeuk Kim set_page_dirty(page); 1179e05df3b1SJaegeuk Kim unlock_page(page); 1180e05df3b1SJaegeuk Kim } 1181e05df3b1SJaegeuk Kim offset[1] = 0; 1182e05df3b1SJaegeuk Kim offset[0]++; 1183e05df3b1SJaegeuk Kim nofs += err; 1184e05df3b1SJaegeuk Kim } 1185e05df3b1SJaegeuk Kim fail: 1186e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 118751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1188e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1189e05df3b1SJaegeuk Kim } 1190e05df3b1SJaegeuk Kim 11919c77f754SJaegeuk Kim /* caller must lock inode page */ 11924d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11934f16fb0fSJaegeuk Kim { 11944081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11954f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11964f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11974f16fb0fSJaegeuk Kim struct page *npage; 11987735730dSChao Yu int err; 11994f16fb0fSJaegeuk Kim 12004f16fb0fSJaegeuk Kim if (!nid) 12014f16fb0fSJaegeuk Kim return 0; 12024f16fb0fSJaegeuk Kim 12034d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 12044f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 12054f16fb0fSJaegeuk Kim return PTR_ERR(npage); 12064f16fb0fSJaegeuk Kim 12077735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 12087735730dSChao Yu err = truncate_node(&dn); 12097735730dSChao Yu if (err) { 12107735730dSChao Yu f2fs_put_page(npage, 1); 12117735730dSChao Yu return err; 12127735730dSChao Yu } 12137735730dSChao Yu 1214205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 121565985d93SJaegeuk Kim 12164f16fb0fSJaegeuk Kim return 0; 12174f16fb0fSJaegeuk Kim } 12184f16fb0fSJaegeuk Kim 121939936837SJaegeuk Kim /* 12204f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 12214f4124d0SChao Yu * f2fs_unlock_op(). 122239936837SJaegeuk Kim */ 12234d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1224e05df3b1SJaegeuk Kim { 1225e05df3b1SJaegeuk Kim struct dnode_of_data dn; 122613ec7297SChao Yu int err; 1227e05df3b1SJaegeuk Kim 1228c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 12294d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 123013ec7297SChao Yu if (err) 123113ec7297SChao Yu return err; 1232e05df3b1SJaegeuk Kim 12334d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 123413ec7297SChao Yu if (err) { 1235c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 123613ec7297SChao Yu return err; 1237e05df3b1SJaegeuk Kim } 1238c2e69583SJaegeuk Kim 1239c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1240c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1241c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12424d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1243c2e69583SJaegeuk Kim 1244e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12458d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12468d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12478d714f8aSJaegeuk Kim return -EIO; 12488d714f8aSJaegeuk Kim } 12498b6810f8SChao Yu 12508b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1251097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1252097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1253dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12548b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12558b6810f8SChao Yu } 1256c2e69583SJaegeuk Kim 1257c2e69583SJaegeuk Kim /* will put inode & node pages */ 12587735730dSChao Yu err = truncate_node(&dn); 12597735730dSChao Yu if (err) { 12607735730dSChao Yu f2fs_put_dnode(&dn); 12617735730dSChao Yu return err; 12627735730dSChao Yu } 126313ec7297SChao Yu return 0; 1264e05df3b1SJaegeuk Kim } 1265e05df3b1SJaegeuk Kim 12664d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1267e05df3b1SJaegeuk Kim { 1268e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1269e05df3b1SJaegeuk Kim 1270e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1271e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 127244a83ff6SJaegeuk Kim 127344a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12744d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1275e05df3b1SJaegeuk Kim } 1276e05df3b1SJaegeuk Kim 12774d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1278e05df3b1SJaegeuk Kim { 12794081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 128025cc5d3bSJaegeuk Kim struct node_info new_ni; 1281e05df3b1SJaegeuk Kim struct page *page; 1282e05df3b1SJaegeuk Kim int err; 1283e05df3b1SJaegeuk Kim 128491942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1285e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1286e05df3b1SJaegeuk Kim 1287300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1288e05df3b1SJaegeuk Kim if (!page) 1289e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1290e05df3b1SJaegeuk Kim 12910abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12929c02740cSJaegeuk Kim goto fail; 12930abd675eSChao Yu 129425cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 1295a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false); 12967735730dSChao Yu if (err) { 12977735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12987735730dSChao Yu goto fail; 12997735730dSChao Yu } 1300141170b7SChao Yu if (unlikely(new_ni.blk_addr != NULL_ADDR)) { 1301141170b7SChao Yu err = -EFSCORRUPTED; 1302141170b7SChao Yu set_sbi_flag(sbi, SBI_NEED_FSCK); 130395fa90c9SChao Yu f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); 1304141170b7SChao Yu goto fail; 1305141170b7SChao Yu } 130625cc5d3bSJaegeuk Kim #endif 130725cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1308e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 130925cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 131025cc5d3bSJaegeuk Kim new_ni.flag = 0; 131125cc5d3bSJaegeuk Kim new_ni.version = 0; 1312479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 13139c02740cSJaegeuk Kim 1314bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 13159c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1316c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1317237c0790SJaegeuk Kim if (!PageUptodate(page)) 13189c02740cSJaegeuk Kim SetPageUptodate(page); 131912719ae1SJaegeuk Kim if (set_page_dirty(page)) 132012719ae1SJaegeuk Kim dn->node_changed = true; 1321e05df3b1SJaegeuk Kim 13224bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1323205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1324479bd73aSJaegeuk Kim 1325e05df3b1SJaegeuk Kim if (ofs == 0) 1326e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1327e05df3b1SJaegeuk Kim return page; 1328e05df3b1SJaegeuk Kim 1329e05df3b1SJaegeuk Kim fail: 133071e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1331e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1332e05df3b1SJaegeuk Kim return ERR_PTR(err); 1333e05df3b1SJaegeuk Kim } 1334e05df3b1SJaegeuk Kim 133556ae674cSJaegeuk Kim /* 133656ae674cSJaegeuk Kim * Caller should do after getting the following values. 133756ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 133886531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 133956ae674cSJaegeuk Kim */ 13407649c873SBart Van Assche static int read_node_page(struct page *page, blk_opf_t op_flags) 1341e05df3b1SJaegeuk Kim { 13424081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1343e05df3b1SJaegeuk Kim struct node_info ni; 1344cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 134505ca3632SJaegeuk Kim .sbi = sbi, 1346cf04e8ebSJaegeuk Kim .type = NODE, 134704d328deSMike Christie .op = REQ_OP_READ, 134804d328deSMike Christie .op_flags = op_flags, 134905ca3632SJaegeuk Kim .page = page, 13504375a336SJaegeuk Kim .encrypted_page = NULL, 1351cf04e8ebSJaegeuk Kim }; 13527735730dSChao Yu int err; 1353e05df3b1SJaegeuk Kim 135454c55c4eSWeichao Guo if (PageUptodate(page)) { 1355b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1356b42b179bSChao Yu ClearPageUptodate(page); 135710f966bbSChao Yu return -EFSBADCRC; 1358b42b179bSChao Yu } 13593bdad3c7SJaegeuk Kim return LOCKED_PAGE; 136054c55c4eSWeichao Guo } 13613bdad3c7SJaegeuk Kim 1362a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, page->index, &ni, false); 13637735730dSChao Yu if (err) 13647735730dSChao Yu return err; 1365e05df3b1SJaegeuk Kim 1366b7ec2061SJaegeuk Kim /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */ 1367e6ecb142SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR)) { 13682bca1e23SJaegeuk Kim ClearPageUptodate(page); 1369e05df3b1SJaegeuk Kim return -ENOENT; 1370393ff91fSJaegeuk Kim } 1371393ff91fSJaegeuk Kim 13727a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13738b83ac81SChao Yu 13748b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13758b83ac81SChao Yu 13768b83ac81SChao Yu if (!err) 137734a23525SChao Yu f2fs_update_iostat(sbi, NULL, FS_NODE_READ_IO, F2FS_BLKSIZE); 13788b83ac81SChao Yu 13798b83ac81SChao Yu return err; 1380e05df3b1SJaegeuk Kim } 1381e05df3b1SJaegeuk Kim 13820a8165d7SJaegeuk Kim /* 1383e05df3b1SJaegeuk Kim * Readahead a node page 1384e05df3b1SJaegeuk Kim */ 13854d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1386e05df3b1SJaegeuk Kim { 1387e05df3b1SJaegeuk Kim struct page *apage; 138856ae674cSJaegeuk Kim int err; 1389e05df3b1SJaegeuk Kim 1390e8458725SChao Yu if (!nid) 1391e8458725SChao Yu return; 13924d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1393a4f843bdSJaegeuk Kim return; 1394e8458725SChao Yu 13955ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1396999270deSFan Li if (apage) 1397393ff91fSJaegeuk Kim return; 1398e05df3b1SJaegeuk Kim 1399300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1400e05df3b1SJaegeuk Kim if (!apage) 1401e05df3b1SJaegeuk Kim return; 1402e05df3b1SJaegeuk Kim 140370246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 140486531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1405e05df3b1SJaegeuk Kim } 1406e05df3b1SJaegeuk Kim 140717a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 14080e022ea8SChao Yu struct page *parent, int start) 1409e05df3b1SJaegeuk Kim { 141056ae674cSJaegeuk Kim struct page *page; 141156ae674cSJaegeuk Kim int err; 14124aa69d56SJaegeuk Kim 14134aa69d56SJaegeuk Kim if (!nid) 14144aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 14154d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1416a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1417afcb7ca0SJaegeuk Kim repeat: 1418300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1419e05df3b1SJaegeuk Kim if (!page) 1420e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1421e05df3b1SJaegeuk Kim 142270fd7614SChristoph Hellwig err = read_node_page(page, 0); 142386531d6bSJaegeuk Kim if (err < 0) { 1424a7b8618aSJaegeuk Kim goto out_put_err; 1425e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 14261f258ec1SChao Yu err = 0; 1427e1c51b9fSChao Yu goto page_hit; 142886531d6bSJaegeuk Kim } 1429aaf96075SJaegeuk Kim 14300e022ea8SChao Yu if (parent) 14314d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 14320e022ea8SChao Yu 1433e1c51b9fSChao Yu lock_page(page); 1434e1c51b9fSChao Yu 14354ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1436afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1437afcb7ca0SJaegeuk Kim goto repeat; 1438afcb7ca0SJaegeuk Kim } 14391563ac75SChao Yu 14401f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14411f258ec1SChao Yu err = -EIO; 14421563ac75SChao Yu goto out_err; 14431f258ec1SChao Yu } 1444704956ecSChao Yu 1445704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 144610f966bbSChao Yu err = -EFSBADCRC; 1447704956ecSChao Yu goto out_err; 1448704956ecSChao Yu } 1449e1c51b9fSChao Yu page_hit: 1450a7b8618aSJaegeuk Kim if (likely(nid == nid_of_node(page))) 1451a7b8618aSJaegeuk Kim return page; 1452a7b8618aSJaegeuk Kim 1453dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14541f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14551f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14561f258ec1SChao Yu next_blkaddr_of_node(page)); 14576663b138SWeichao Guo set_sbi_flag(sbi, SBI_NEED_FSCK); 14581f258ec1SChao Yu err = -EINVAL; 14590c9df7fbSYunlong Song out_err: 1460ee605234SJaegeuk Kim ClearPageUptodate(page); 1461a7b8618aSJaegeuk Kim out_put_err: 146282c7863eSJaegeuk Kim /* ENOENT comes from read_node_page which is not an error. */ 146382c7863eSJaegeuk Kim if (err != -ENOENT) 1464a7b8618aSJaegeuk Kim f2fs_handle_page_eio(sbi, page->index, NODE); 14650c9df7fbSYunlong Song f2fs_put_page(page, 1); 14661f258ec1SChao Yu return ERR_PTR(err); 14670c9df7fbSYunlong Song } 1468e05df3b1SJaegeuk Kim 14694d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14700e022ea8SChao Yu { 14710e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14720e022ea8SChao Yu } 14730e022ea8SChao Yu 14744d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1475e05df3b1SJaegeuk Kim { 14764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14770e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1478e05df3b1SJaegeuk Kim 14790e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1480e05df3b1SJaegeuk Kim } 1481e05df3b1SJaegeuk Kim 14822049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14832049d4fcSJaegeuk Kim { 14842049d4fcSJaegeuk Kim struct inode *inode; 14852049d4fcSJaegeuk Kim struct page *page; 14860f3311a8SChao Yu int ret; 14872049d4fcSJaegeuk Kim 14882049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14892049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14902049d4fcSJaegeuk Kim if (!inode) 14912049d4fcSJaegeuk Kim return; 14922049d4fcSJaegeuk Kim 149301eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 149401eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14952049d4fcSJaegeuk Kim if (!page) 14962049d4fcSJaegeuk Kim goto iput_out; 14972049d4fcSJaegeuk Kim 14982049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14992049d4fcSJaegeuk Kim goto page_out; 15002049d4fcSJaegeuk Kim 15012049d4fcSJaegeuk Kim if (!PageDirty(page)) 15022049d4fcSJaegeuk Kim goto page_out; 15032049d4fcSJaegeuk Kim 15042049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 15052049d4fcSJaegeuk Kim goto page_out; 15062049d4fcSJaegeuk Kim 15070f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 15082049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 15094d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 15100f3311a8SChao Yu if (ret) 15112049d4fcSJaegeuk Kim set_page_dirty(page); 15122049d4fcSJaegeuk Kim page_out: 15134a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 15142049d4fcSJaegeuk Kim iput_out: 15152049d4fcSJaegeuk Kim iput(inode); 15162049d4fcSJaegeuk Kim } 15172049d4fcSJaegeuk Kim 1518608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1519e05df3b1SJaegeuk Kim { 1520028a63a6SJan Kara pgoff_t index; 1521e05df3b1SJaegeuk Kim struct pagevec pvec; 1522608514deSJaegeuk Kim struct page *last_page = NULL; 1523028a63a6SJan Kara int nr_pages; 152452681375SJaegeuk Kim 152586679820SMel Gorman pagevec_init(&pvec); 152652681375SJaegeuk Kim index = 0; 152752681375SJaegeuk Kim 1528028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 152967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1530028a63a6SJan Kara int i; 153152681375SJaegeuk Kim 153252681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 153352681375SJaegeuk Kim struct page *page = pvec.pages[i]; 153452681375SJaegeuk Kim 153552681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1536608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 153752681375SJaegeuk Kim pagevec_release(&pvec); 1538608514deSJaegeuk Kim return ERR_PTR(-EIO); 153952681375SJaegeuk Kim } 154052681375SJaegeuk Kim 154152681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 154252681375SJaegeuk Kim continue; 154352681375SJaegeuk Kim if (ino_of_node(page) != ino) 154452681375SJaegeuk Kim continue; 154552681375SJaegeuk Kim 154652681375SJaegeuk Kim lock_page(page); 154752681375SJaegeuk Kim 154852681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 154952681375SJaegeuk Kim continue_unlock: 155052681375SJaegeuk Kim unlock_page(page); 155152681375SJaegeuk Kim continue; 155252681375SJaegeuk Kim } 155352681375SJaegeuk Kim if (ino_of_node(page) != ino) 155452681375SJaegeuk Kim goto continue_unlock; 155552681375SJaegeuk Kim 155652681375SJaegeuk Kim if (!PageDirty(page)) { 155752681375SJaegeuk Kim /* someone wrote it for us */ 155852681375SJaegeuk Kim goto continue_unlock; 155952681375SJaegeuk Kim } 156052681375SJaegeuk Kim 1561608514deSJaegeuk Kim if (last_page) 1562608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1563608514deSJaegeuk Kim 1564608514deSJaegeuk Kim get_page(page); 1565608514deSJaegeuk Kim last_page = page; 1566608514deSJaegeuk Kim unlock_page(page); 1567608514deSJaegeuk Kim } 1568608514deSJaegeuk Kim pagevec_release(&pvec); 1569608514deSJaegeuk Kim cond_resched(); 1570608514deSJaegeuk Kim } 1571608514deSJaegeuk Kim return last_page; 1572608514deSJaegeuk Kim } 1573608514deSJaegeuk Kim 1574d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1575b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 157650fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1577faa24895SJaegeuk Kim { 1578faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1579faa24895SJaegeuk Kim nid_t nid; 1580faa24895SJaegeuk Kim struct node_info ni; 1581faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1582faa24895SJaegeuk Kim .sbi = sbi, 158339d787beSChao Yu .ino = ino_of_node(page), 1584faa24895SJaegeuk Kim .type = NODE, 1585faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1586faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1587faa24895SJaegeuk Kim .page = page, 1588faa24895SJaegeuk Kim .encrypted_page = NULL, 1589d68f735bSJaegeuk Kim .submitted = false, 1590b0af6d49SChao Yu .io_type = io_type, 1591578c6478SYufen Yu .io_wbc = wbc, 1592faa24895SJaegeuk Kim }; 159350fa53ecSChao Yu unsigned int seq; 1594faa24895SJaegeuk Kim 1595faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1596faa24895SJaegeuk Kim 15976d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 15986d7c865cSJaegeuk Kim ClearPageUptodate(page); 15996d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 16006d7c865cSJaegeuk Kim unlock_page(page); 16016d7c865cSJaegeuk Kim return 0; 16026d7c865cSJaegeuk Kim } 1603db198ae0SChao Yu 1604faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1605faa24895SJaegeuk Kim goto redirty_out; 1606faa24895SJaegeuk Kim 1607100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1608100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1609fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1610fd8c8cafSChao Yu goto redirty_out; 1611fd8c8cafSChao Yu 1612faa24895SJaegeuk Kim /* get old block addr of this node page */ 1613faa24895SJaegeuk Kim nid = nid_of_node(page); 1614faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1615faa24895SJaegeuk Kim 1616a9419b63SJaegeuk Kim if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) 16177735730dSChao Yu goto redirty_out; 16187735730dSChao Yu 1619faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1620e4544b63STim Murray if (!f2fs_down_read_trylock(&sbi->node_write)) 1621faa24895SJaegeuk Kim goto redirty_out; 1622faa24895SJaegeuk Kim } else { 1623e4544b63STim Murray f2fs_down_read(&sbi->node_write); 1624faa24895SJaegeuk Kim } 1625faa24895SJaegeuk Kim 1626faa24895SJaegeuk Kim /* This page is already truncated */ 1627faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1628faa24895SJaegeuk Kim ClearPageUptodate(page); 1629faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1630e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1631faa24895SJaegeuk Kim unlock_page(page); 1632faa24895SJaegeuk Kim return 0; 1633faa24895SJaegeuk Kim } 1634faa24895SJaegeuk Kim 1635c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 163693770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 163793770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 1638e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1639c9b60788SChao Yu goto redirty_out; 164089d13c38SJaegeuk Kim } 1641c9b60788SChao Yu 1642c550e25bSJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi)) 1643e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1644e7c75ab0SJaegeuk Kim 1645dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 164650fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 164750fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 164850fa53ecSChao Yu if (seq_id) 164950fa53ecSChao Yu *seq_id = seq; 165050fa53ecSChao Yu } 165150fa53ecSChao Yu 1652dc5a9412SChao Yu set_page_writeback(page); 1653dc5a9412SChao Yu 1654faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16554d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1656faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1657faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1658e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1659faa24895SJaegeuk Kim 1660d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1661bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1662d68f735bSJaegeuk Kim submitted = NULL; 1663d68f735bSJaegeuk Kim } 1664faa24895SJaegeuk Kim 1665faa24895SJaegeuk Kim unlock_page(page); 1666faa24895SJaegeuk Kim 1667d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1668b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1669d68f735bSJaegeuk Kim submitted = NULL; 1670d68f735bSJaegeuk Kim } 1671d68f735bSJaegeuk Kim if (submitted) 1672d68f735bSJaegeuk Kim *submitted = fio.submitted; 1673faa24895SJaegeuk Kim 1674401db79fSYunlong Song if (do_balance) 1675401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1676faa24895SJaegeuk Kim return 0; 1677faa24895SJaegeuk Kim 1678faa24895SJaegeuk Kim redirty_out: 1679faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1680faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1681faa24895SJaegeuk Kim } 1682faa24895SJaegeuk Kim 168348018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1684f15194fcSYunlei He { 168548018b4cSChao Yu int err = 0; 168648018b4cSChao Yu 1687f15194fcSYunlei He if (gc_type == FG_GC) { 1688f15194fcSYunlei He struct writeback_control wbc = { 1689f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1690f15194fcSYunlei He .nr_to_write = 1, 1691f15194fcSYunlei He .for_reclaim = 0, 1692f15194fcSYunlei He }; 1693f15194fcSYunlei He 1694bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16958d64d365SChao Yu 16968d64d365SChao Yu set_page_dirty(node_page); 16978d64d365SChao Yu 169848018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 169948018b4cSChao Yu err = -EAGAIN; 1700f15194fcSYunlei He goto out_page; 170148018b4cSChao Yu } 1702f15194fcSYunlei He 1703f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 170448018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 170548018b4cSChao Yu err = -EAGAIN; 1706f15194fcSYunlei He unlock_page(node_page); 170748018b4cSChao Yu } 1708f15194fcSYunlei He goto release_page; 1709f15194fcSYunlei He } else { 1710f15194fcSYunlei He /* set page dirty and write it */ 1711f15194fcSYunlei He if (!PageWriteback(node_page)) 1712f15194fcSYunlei He set_page_dirty(node_page); 1713f15194fcSYunlei He } 1714f15194fcSYunlei He out_page: 1715f15194fcSYunlei He unlock_page(node_page); 1716f15194fcSYunlei He release_page: 1717f15194fcSYunlei He f2fs_put_page(node_page, 0); 171848018b4cSChao Yu return err; 1719f15194fcSYunlei He } 1720f15194fcSYunlei He 1721faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1722faa24895SJaegeuk Kim struct writeback_control *wbc) 1723faa24895SJaegeuk Kim { 172450fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 172550fa53ecSChao Yu FS_NODE_IO, NULL); 1726faa24895SJaegeuk Kim } 1727faa24895SJaegeuk Kim 17284d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 172950fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 173050fa53ecSChao Yu unsigned int *seq_id) 1731608514deSJaegeuk Kim { 1732028a63a6SJan Kara pgoff_t index; 1733608514deSJaegeuk Kim struct pagevec pvec; 1734608514deSJaegeuk Kim int ret = 0; 1735608514deSJaegeuk Kim struct page *last_page = NULL; 1736608514deSJaegeuk Kim bool marked = false; 173726de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1738028a63a6SJan Kara int nr_pages; 1739bab475c5SChao Yu int nwritten = 0; 1740608514deSJaegeuk Kim 1741608514deSJaegeuk Kim if (atomic) { 1742608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1743608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1744608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1745608514deSJaegeuk Kim } 1746608514deSJaegeuk Kim retry: 174786679820SMel Gorman pagevec_init(&pvec); 1748608514deSJaegeuk Kim index = 0; 1749608514deSJaegeuk Kim 1750028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 175167fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1752028a63a6SJan Kara int i; 1753608514deSJaegeuk Kim 1754608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1755608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1756d68f735bSJaegeuk Kim bool submitted = false; 1757608514deSJaegeuk Kim 1758608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1759608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1760608514deSJaegeuk Kim pagevec_release(&pvec); 17619de69279SChao Yu ret = -EIO; 17629de69279SChao Yu goto out; 1763608514deSJaegeuk Kim } 1764608514deSJaegeuk Kim 1765608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1766608514deSJaegeuk Kim continue; 1767608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1768608514deSJaegeuk Kim continue; 1769608514deSJaegeuk Kim 1770608514deSJaegeuk Kim lock_page(page); 1771608514deSJaegeuk Kim 1772608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1773608514deSJaegeuk Kim continue_unlock: 1774608514deSJaegeuk Kim unlock_page(page); 1775608514deSJaegeuk Kim continue; 1776608514deSJaegeuk Kim } 1777608514deSJaegeuk Kim if (ino_of_node(page) != ino) 177852681375SJaegeuk Kim goto continue_unlock; 177952681375SJaegeuk Kim 1780608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1781608514deSJaegeuk Kim /* someone wrote it for us */ 1782608514deSJaegeuk Kim goto continue_unlock; 1783608514deSJaegeuk Kim } 1784608514deSJaegeuk Kim 1785bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1786608514deSJaegeuk Kim 1787d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1788d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1789d29fd172SJaegeuk Kim 1790608514deSJaegeuk Kim if (!atomic || page == last_page) { 179152681375SJaegeuk Kim set_fsync_mark(page, 1); 179247c8ebccSJaegeuk Kim percpu_counter_inc(&sbi->rf_node_block_count); 179326de9b11SJaegeuk Kim if (IS_INODE(page)) { 179426de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 179526de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17964d57b86dSChao Yu f2fs_update_inode(inode, page); 179752681375SJaegeuk Kim set_dentry_mark(page, 17984d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 179926de9b11SJaegeuk Kim } 1800608514deSJaegeuk Kim /* may be written by other thread */ 1801608514deSJaegeuk Kim if (!PageDirty(page)) 1802608514deSJaegeuk Kim set_page_dirty(page); 1803608514deSJaegeuk Kim } 1804608514deSJaegeuk Kim 1805608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1806608514deSJaegeuk Kim goto continue_unlock; 180752681375SJaegeuk Kim 1808e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1809d68f735bSJaegeuk Kim page == last_page, 1810b0af6d49SChao Yu &submitted, wbc, true, 181150fa53ecSChao Yu FS_NODE_IO, seq_id); 1812c267ec15SJaegeuk Kim if (ret) { 181352681375SJaegeuk Kim unlock_page(page); 1814608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1815608514deSJaegeuk Kim break; 1816d68f735bSJaegeuk Kim } else if (submitted) { 1817bab475c5SChao Yu nwritten++; 1818608514deSJaegeuk Kim } 18193f5f4959SChao Yu 1820608514deSJaegeuk Kim if (page == last_page) { 1821608514deSJaegeuk Kim f2fs_put_page(page, 0); 1822608514deSJaegeuk Kim marked = true; 182352681375SJaegeuk Kim break; 182452681375SJaegeuk Kim } 1825c267ec15SJaegeuk Kim } 182652681375SJaegeuk Kim pagevec_release(&pvec); 182752681375SJaegeuk Kim cond_resched(); 182852681375SJaegeuk Kim 1829608514deSJaegeuk Kim if (ret || marked) 183052681375SJaegeuk Kim break; 183152681375SJaegeuk Kim } 1832608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1833dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1834608514deSJaegeuk Kim ino, last_page->index); 1835608514deSJaegeuk Kim lock_page(last_page); 1836bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1837608514deSJaegeuk Kim set_page_dirty(last_page); 1838608514deSJaegeuk Kim unlock_page(last_page); 1839608514deSJaegeuk Kim goto retry; 1840608514deSJaegeuk Kim } 18419de69279SChao Yu out: 1842bab475c5SChao Yu if (nwritten) 1843bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1844c267ec15SJaegeuk Kim return ret ? -EIO : 0; 184552681375SJaegeuk Kim } 184652681375SJaegeuk Kim 1847052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1848052a82d8SChao Yu { 1849052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1850052a82d8SChao Yu bool clean; 1851052a82d8SChao Yu 1852052a82d8SChao Yu if (inode->i_ino != ino) 1853052a82d8SChao Yu return 0; 1854052a82d8SChao Yu 1855052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1856052a82d8SChao Yu return 0; 1857052a82d8SChao Yu 1858052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1859052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1860052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1861052a82d8SChao Yu 1862052a82d8SChao Yu if (clean) 1863052a82d8SChao Yu return 0; 1864052a82d8SChao Yu 1865052a82d8SChao Yu inode = igrab(inode); 1866052a82d8SChao Yu if (!inode) 1867052a82d8SChao Yu return 0; 1868052a82d8SChao Yu return 1; 1869052a82d8SChao Yu } 1870052a82d8SChao Yu 1871052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1872052a82d8SChao Yu { 1873052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1874052a82d8SChao Yu struct inode *inode; 1875052a82d8SChao Yu nid_t ino = ino_of_node(page); 1876052a82d8SChao Yu 1877052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1878052a82d8SChao Yu if (!inode) 1879052a82d8SChao Yu return false; 1880052a82d8SChao Yu 1881052a82d8SChao Yu f2fs_update_inode(inode, page); 1882052a82d8SChao Yu unlock_page(page); 1883052a82d8SChao Yu 1884052a82d8SChao Yu iput(inode); 1885052a82d8SChao Yu return true; 1886052a82d8SChao Yu } 1887052a82d8SChao Yu 188868e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 188934c061adSSayali Lokhande { 189034c061adSSayali Lokhande pgoff_t index = 0; 189134c061adSSayali Lokhande struct pagevec pvec; 189234c061adSSayali Lokhande int nr_pages; 189334c061adSSayali Lokhande 189434c061adSSayali Lokhande pagevec_init(&pvec); 189534c061adSSayali Lokhande 189634c061adSSayali Lokhande while ((nr_pages = pagevec_lookup_tag(&pvec, 189734c061adSSayali Lokhande NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 189834c061adSSayali Lokhande int i; 189934c061adSSayali Lokhande 190034c061adSSayali Lokhande for (i = 0; i < nr_pages; i++) { 190134c061adSSayali Lokhande struct page *page = pvec.pages[i]; 190234c061adSSayali Lokhande 190334c061adSSayali Lokhande if (!IS_DNODE(page)) 190434c061adSSayali Lokhande continue; 190534c061adSSayali Lokhande 190634c061adSSayali Lokhande lock_page(page); 190734c061adSSayali Lokhande 190834c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 190934c061adSSayali Lokhande continue_unlock: 191034c061adSSayali Lokhande unlock_page(page); 191134c061adSSayali Lokhande continue; 191234c061adSSayali Lokhande } 191334c061adSSayali Lokhande 191434c061adSSayali Lokhande if (!PageDirty(page)) { 191534c061adSSayali Lokhande /* someone wrote it for us */ 191634c061adSSayali Lokhande goto continue_unlock; 191734c061adSSayali Lokhande } 191834c061adSSayali Lokhande 191934c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1920b763f3beSChao Yu if (page_private_inline(page)) { 1921b763f3beSChao Yu clear_page_private_inline(page); 192234c061adSSayali Lokhande unlock_page(page); 192334c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 192434c061adSSayali Lokhande continue; 192534c061adSSayali Lokhande } 192634c061adSSayali Lokhande unlock_page(page); 192734c061adSSayali Lokhande } 192834c061adSSayali Lokhande pagevec_release(&pvec); 192934c061adSSayali Lokhande cond_resched(); 193034c061adSSayali Lokhande } 193134c061adSSayali Lokhande } 193234c061adSSayali Lokhande 19334d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 19344d57b86dSChao Yu struct writeback_control *wbc, 1935b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 193652681375SJaegeuk Kim { 1937028a63a6SJan Kara pgoff_t index; 193852681375SJaegeuk Kim struct pagevec pvec; 193952681375SJaegeuk Kim int step = 0; 194012bb0a8fSJaegeuk Kim int nwritten = 0; 19413f5f4959SChao Yu int ret = 0; 1942c29fd0c0SChao Yu int nr_pages, done = 0; 1943e05df3b1SJaegeuk Kim 194486679820SMel Gorman pagevec_init(&pvec); 1945e05df3b1SJaegeuk Kim 1946e05df3b1SJaegeuk Kim next_step: 1947e05df3b1SJaegeuk Kim index = 0; 1948e05df3b1SJaegeuk Kim 1949c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1950c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1951028a63a6SJan Kara int i; 1952e05df3b1SJaegeuk Kim 1953e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1954e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1955d68f735bSJaegeuk Kim bool submitted = false; 1956e05df3b1SJaegeuk Kim 1957c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1958c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1959c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1960c29fd0c0SChao Yu done = 1; 1961c29fd0c0SChao Yu break; 1962c29fd0c0SChao Yu } 1963c29fd0c0SChao Yu 1964e05df3b1SJaegeuk Kim /* 1965e05df3b1SJaegeuk Kim * flushing sequence with step: 1966e05df3b1SJaegeuk Kim * 0. indirect nodes 1967e05df3b1SJaegeuk Kim * 1. dentry dnodes 1968e05df3b1SJaegeuk Kim * 2. file dnodes 1969e05df3b1SJaegeuk Kim */ 1970e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1971e05df3b1SJaegeuk Kim continue; 1972e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1973e05df3b1SJaegeuk Kim is_cold_node(page))) 1974e05df3b1SJaegeuk Kim continue; 1975e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1976e05df3b1SJaegeuk Kim !is_cold_node(page))) 1977e05df3b1SJaegeuk Kim continue; 19789a4cbc9eSChao Yu lock_node: 19794b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 19804b270a8cSChao Yu lock_page(page); 19814b270a8cSChao Yu else if (!trylock_page(page)) 1982e05df3b1SJaegeuk Kim continue; 1983e05df3b1SJaegeuk Kim 19844ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1985e05df3b1SJaegeuk Kim continue_unlock: 1986e05df3b1SJaegeuk Kim unlock_page(page); 1987e05df3b1SJaegeuk Kim continue; 1988e05df3b1SJaegeuk Kim } 1989e05df3b1SJaegeuk Kim 1990e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1991e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1992e05df3b1SJaegeuk Kim goto continue_unlock; 1993e05df3b1SJaegeuk Kim } 1994e05df3b1SJaegeuk Kim 1995b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 1996b0f3b87fSJaegeuk Kim if (!do_balance) 1997b0f3b87fSJaegeuk Kim goto write_node; 1998b0f3b87fSJaegeuk Kim 1999b0f3b87fSJaegeuk Kim /* flush inline_data */ 2000b763f3beSChao Yu if (page_private_inline(page)) { 2001b763f3beSChao Yu clear_page_private_inline(page); 20022049d4fcSJaegeuk Kim unlock_page(page); 20032049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 20049a4cbc9eSChao Yu goto lock_node; 20052049d4fcSJaegeuk Kim } 20062049d4fcSJaegeuk Kim 2007052a82d8SChao Yu /* flush dirty inode */ 20087859e97fSJaegeuk Kim if (IS_INODE(page) && flush_dirty_inode(page)) 2009052a82d8SChao Yu goto lock_node; 2010b0f3b87fSJaegeuk Kim write_node: 2011bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 2012fa3d2bdfSJaegeuk Kim 2013e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 2014e05df3b1SJaegeuk Kim goto continue_unlock; 2015e05df3b1SJaegeuk Kim 2016e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 2017e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 201852746519SJaegeuk Kim 2019401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 202050fa53ecSChao Yu wbc, do_balance, io_type, NULL); 2021d68f735bSJaegeuk Kim if (ret) 202252746519SJaegeuk Kim unlock_page(page); 2023d68f735bSJaegeuk Kim else if (submitted) 20243f5f4959SChao Yu nwritten++; 2025e05df3b1SJaegeuk Kim 2026e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 2027e05df3b1SJaegeuk Kim break; 2028e05df3b1SJaegeuk Kim } 2029e05df3b1SJaegeuk Kim pagevec_release(&pvec); 2030e05df3b1SJaegeuk Kim cond_resched(); 2031e05df3b1SJaegeuk Kim 2032e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 2033e05df3b1SJaegeuk Kim step = 2; 2034e05df3b1SJaegeuk Kim break; 2035e05df3b1SJaegeuk Kim } 2036e05df3b1SJaegeuk Kim } 2037e05df3b1SJaegeuk Kim 2038e05df3b1SJaegeuk Kim if (step < 2) { 2039100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2040100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2041fd8c8cafSChao Yu goto out; 2042e05df3b1SJaegeuk Kim step++; 2043e05df3b1SJaegeuk Kim goto next_step; 2044e05df3b1SJaegeuk Kim } 2045fd8c8cafSChao Yu out: 20463f5f4959SChao Yu if (nwritten) 2047b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2048db198ae0SChao Yu 2049db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2050db198ae0SChao Yu return -EIO; 20513f5f4959SChao Yu return ret; 2052e05df3b1SJaegeuk Kim } 2053e05df3b1SJaegeuk Kim 205450fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 205550fa53ecSChao Yu unsigned int seq_id) 2056cfe58f9dSJaegeuk Kim { 205750fa53ecSChao Yu struct fsync_node_entry *fn; 205850fa53ecSChao Yu struct page *page; 205950fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 206050fa53ecSChao Yu unsigned long flags; 206150fa53ecSChao Yu unsigned int cur_seq_id = 0; 2062280db3c8SMiklos Szeredi int ret2, ret = 0; 2063cfe58f9dSJaegeuk Kim 206450fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 206550fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 206650fa53ecSChao Yu if (list_empty(head)) { 206750fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 206850fa53ecSChao Yu break; 206950fa53ecSChao Yu } 207050fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 207150fa53ecSChao Yu if (fn->seq_id > seq_id) { 207250fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 207350fa53ecSChao Yu break; 207450fa53ecSChao Yu } 207550fa53ecSChao Yu cur_seq_id = fn->seq_id; 207650fa53ecSChao Yu page = fn->page; 207750fa53ecSChao Yu get_page(page); 207850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20794ef51a8fSJaegeuk Kim 2080bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 208150fa53ecSChao Yu 208250fa53ecSChao Yu put_page(page); 208350fa53ecSChao Yu 208450fa53ecSChao Yu if (ret) 208550fa53ecSChao Yu break; 2086cfe58f9dSJaegeuk Kim } 2087cfe58f9dSJaegeuk Kim 2088280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 2089cfe58f9dSJaegeuk Kim if (!ret) 2090cfe58f9dSJaegeuk Kim ret = ret2; 209150fa53ecSChao Yu 2092cfe58f9dSJaegeuk Kim return ret; 2093cfe58f9dSJaegeuk Kim } 2094cfe58f9dSJaegeuk Kim 2095e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 2096e05df3b1SJaegeuk Kim struct writeback_control *wbc) 2097e05df3b1SJaegeuk Kim { 20984081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 20999dfa1bafSJaegeuk Kim struct blk_plug plug; 210050c8cdb3SJaegeuk Kim long diff; 2101e05df3b1SJaegeuk Kim 21020771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 21030771fcc7SChao Yu goto skip_write; 21040771fcc7SChao Yu 21054660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 21067bcd0cfaSChao Yu f2fs_balance_fs_bg(sbi, true); 2107e05df3b1SJaegeuk Kim 2108a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 2109812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 2110812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 2111812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 2112d3baf95dSJaegeuk Kim goto skip_write; 2113a7fdffbdSJaegeuk Kim 2114c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2115c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 211634415099SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) { 211734415099SChao Yu /* to avoid potential deadlock */ 211834415099SChao Yu if (current->plug) 211934415099SChao Yu blk_finish_plug(current->plug); 2120c29fd0c0SChao Yu goto skip_write; 212134415099SChao Yu } 2122c29fd0c0SChao Yu 2123d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2124d31c7c3fSYunlei He 212550c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 21269dfa1bafSJaegeuk Kim blk_start_plug(&plug); 21274d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 21289dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 212950c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2130c29fd0c0SChao Yu 2131c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2132c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2133e05df3b1SJaegeuk Kim return 0; 2134d3baf95dSJaegeuk Kim 2135d3baf95dSJaegeuk Kim skip_write: 2136d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2137d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2138d3baf95dSJaegeuk Kim return 0; 2139e05df3b1SJaegeuk Kim } 2140e05df3b1SJaegeuk Kim 2141cbc975b1SMatthew Wilcox (Oracle) static bool f2fs_dirty_node_folio(struct address_space *mapping, 2142cbc975b1SMatthew Wilcox (Oracle) struct folio *folio) 2143e05df3b1SJaegeuk Kim { 2144cbc975b1SMatthew Wilcox (Oracle) trace_f2fs_set_page_dirty(&folio->page, NODE); 214526c6b887SJaegeuk Kim 2146cbc975b1SMatthew Wilcox (Oracle) if (!folio_test_uptodate(folio)) 2147cbc975b1SMatthew Wilcox (Oracle) folio_mark_uptodate(folio); 214854c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 2149cbc975b1SMatthew Wilcox (Oracle) if (IS_INODE(&folio->page)) 215029c87793SMatthew Wilcox (Oracle) f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page); 215154c55c4eSWeichao Guo #endif 21529b7eadd9SShuqi Zhang if (filemap_dirty_folio(mapping, folio)) { 215329c87793SMatthew Wilcox (Oracle) inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 2154cbc975b1SMatthew Wilcox (Oracle) set_page_private_reference(&folio->page); 2155cbc975b1SMatthew Wilcox (Oracle) return true; 2156e05df3b1SJaegeuk Kim } 2157cbc975b1SMatthew Wilcox (Oracle) return false; 2158e05df3b1SJaegeuk Kim } 2159e05df3b1SJaegeuk Kim 21600a8165d7SJaegeuk Kim /* 2161e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2162e05df3b1SJaegeuk Kim */ 2163e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2164e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2165e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2166cbc975b1SMatthew Wilcox (Oracle) .dirty_folio = f2fs_dirty_node_folio, 216791503996SMatthew Wilcox (Oracle) .invalidate_folio = f2fs_invalidate_folio, 2168c26cd045SMatthew Wilcox (Oracle) .release_folio = f2fs_release_folio, 21691d5b9bd6SMatthew Wilcox (Oracle) .migrate_folio = filemap_migrate_folio, 2170e05df3b1SJaegeuk Kim }; 2171e05df3b1SJaegeuk Kim 21728a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 21738a7ed66aSJaegeuk Kim nid_t n) 2174e05df3b1SJaegeuk Kim { 21758a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 21763aa770a9SNamjae Jeon } 2177e05df3b1SJaegeuk Kim 21789a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2179b815bdc7SLiu Song struct free_nid *i) 2180e05df3b1SJaegeuk Kim { 2181b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2182eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 21835f029c04SYi Zhuang 2184eb0aa4b8SJaegeuk Kim if (err) 2185eb0aa4b8SJaegeuk Kim return err; 2186eb0aa4b8SJaegeuk Kim 2187b815bdc7SLiu Song nm_i->nid_cnt[FREE_NID]++; 21889a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2189eb0aa4b8SJaegeuk Kim return 0; 2190b8559dc2SChao Yu } 2191b8559dc2SChao Yu 21929a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2193a0761f63SFan Li struct free_nid *i, enum nid_state state) 2194b8559dc2SChao Yu { 2195b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2196b8559dc2SChao Yu 21979a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 21989a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 21999a4ffdf5SChao Yu if (state == FREE_NID) 2200e05df3b1SJaegeuk Kim list_del(&i->list); 22018a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2202e05df3b1SJaegeuk Kim } 2203e05df3b1SJaegeuk Kim 2204a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2205a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2206a0761f63SFan Li { 2207a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2208a0761f63SFan Li 2209a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2210a0761f63SFan Li i->state = dst_state; 2211a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2212a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2213a0761f63SFan Li 2214a0761f63SFan Li switch (dst_state) { 2215a0761f63SFan Li case PREALLOC_NID: 2216a0761f63SFan Li list_del(&i->list); 2217a0761f63SFan Li break; 2218a0761f63SFan Li case FREE_NID: 2219a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2220a0761f63SFan Li break; 2221a0761f63SFan Li default: 2222a0761f63SFan Li BUG_ON(1); 2223a0761f63SFan Li } 2224a0761f63SFan Li } 2225a0761f63SFan Li 222694c821fbSChao Yu bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi) 222794c821fbSChao Yu { 222894c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 222994c821fbSChao Yu unsigned int i; 223094c821fbSChao Yu bool ret = true; 223194c821fbSChao Yu 2232e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 223394c821fbSChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 223494c821fbSChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) { 223594c821fbSChao Yu ret = false; 223694c821fbSChao Yu break; 223794c821fbSChao Yu } 223894c821fbSChao Yu } 2239e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 224094c821fbSChao Yu 224194c821fbSChao Yu return ret; 224294c821fbSChao Yu } 224394c821fbSChao Yu 22445921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 22455921aaa1SLiFan bool set, bool build) 22465921aaa1SLiFan { 22475921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 22485921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 22495921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 22505921aaa1SLiFan 22515921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 22525921aaa1SLiFan return; 22535921aaa1SLiFan 22545921aaa1SLiFan if (set) { 22555921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22565921aaa1SLiFan return; 22575921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22585921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 22595921aaa1SLiFan } else { 22605921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22615921aaa1SLiFan return; 22625921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22635921aaa1SLiFan if (!build) 22645921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 22655921aaa1SLiFan } 22665921aaa1SLiFan } 22675921aaa1SLiFan 22684ac91242SChao Yu /* return if the nid is recognized as free */ 22695921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 22705921aaa1SLiFan nid_t nid, bool build, bool update) 2271e05df3b1SJaegeuk Kim { 22726fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 227330a61ddfSChao Yu struct free_nid *i, *e; 227459bbd474SJaegeuk Kim struct nat_entry *ne; 227530a61ddfSChao Yu int err = -EINVAL; 227630a61ddfSChao Yu bool ret = false; 22779198acebSJaegeuk Kim 22789198acebSJaegeuk Kim /* 0 nid should not be used */ 2279cfb271d4SChao Yu if (unlikely(nid == 0)) 22804ac91242SChao Yu return false; 228159bbd474SJaegeuk Kim 2282626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2283626bcf2bSChao Yu return false; 2284626bcf2bSChao Yu 228532410577SChao Yu i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL); 2286e05df3b1SJaegeuk Kim i->nid = nid; 22879a4ffdf5SChao Yu i->state = FREE_NID; 2288e05df3b1SJaegeuk Kim 22895921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2290769ec6e5SJaegeuk Kim 2291b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 229230a61ddfSChao Yu 229330a61ddfSChao Yu if (build) { 229430a61ddfSChao Yu /* 229530a61ddfSChao Yu * Thread A Thread B 229630a61ddfSChao Yu * - f2fs_create 229730a61ddfSChao Yu * - f2fs_new_inode 22984d57b86dSChao Yu * - f2fs_alloc_nid 22999a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 230030a61ddfSChao Yu * - f2fs_balance_fs_bg 23014d57b86dSChao Yu * - f2fs_build_free_nids 23024d57b86dSChao Yu * - __f2fs_build_free_nids 230330a61ddfSChao Yu * - scan_nat_page 230430a61ddfSChao Yu * - add_free_nid 230530a61ddfSChao Yu * - __lookup_nat_cache 230630a61ddfSChao Yu * - f2fs_add_link 23074d57b86dSChao Yu * - f2fs_init_inode_metadata 23084d57b86dSChao Yu * - f2fs_new_inode_page 23094d57b86dSChao Yu * - f2fs_new_node_page 231030a61ddfSChao Yu * - set_node_addr 23114d57b86dSChao Yu * - f2fs_alloc_nid_done 23129a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 23139a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 231430a61ddfSChao Yu */ 231530a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 231630a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 231730a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 231830a61ddfSChao Yu goto err_out; 231930a61ddfSChao Yu 232030a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 232130a61ddfSChao Yu if (e) { 23229a4ffdf5SChao Yu if (e->state == FREE_NID) 232330a61ddfSChao Yu ret = true; 232430a61ddfSChao Yu goto err_out; 232530a61ddfSChao Yu } 232630a61ddfSChao Yu } 232730a61ddfSChao Yu ret = true; 2328b815bdc7SLiu Song err = __insert_free_nid(sbi, i); 232930a61ddfSChao Yu err_out: 23305921aaa1SLiFan if (update) { 23315921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 23325921aaa1SLiFan if (!build) 23335921aaa1SLiFan nm_i->available_nids++; 23345921aaa1SLiFan } 2335b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2336769ec6e5SJaegeuk Kim radix_tree_preload_end(); 23375921aaa1SLiFan 233830a61ddfSChao Yu if (err) 2339e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 234030a61ddfSChao Yu return ret; 2341e05df3b1SJaegeuk Kim } 2342e05df3b1SJaegeuk Kim 2343b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2344e05df3b1SJaegeuk Kim { 2345b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2346e05df3b1SJaegeuk Kim struct free_nid *i; 2347cf0ee0f0SChao Yu bool need_free = false; 2348cf0ee0f0SChao Yu 2349b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23508a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 23519a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2352a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2353cf0ee0f0SChao Yu need_free = true; 2354e05df3b1SJaegeuk Kim } 2355b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2356cf0ee0f0SChao Yu 2357cf0ee0f0SChao Yu if (need_free) 2358cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2359e05df3b1SJaegeuk Kim } 2360e05df3b1SJaegeuk Kim 2361e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2362e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2363e05df3b1SJaegeuk Kim { 23646fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2365e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2366e05df3b1SJaegeuk Kim block_t blk_addr; 23674ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2368e05df3b1SJaegeuk Kim int i; 2369e05df3b1SJaegeuk Kim 237023380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 23714ac91242SChao Yu 2372e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2373e05df3b1SJaegeuk Kim 2374e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2375cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 237604431c44SJaegeuk Kim break; 237723d38844SHaicheng Li 2378e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2379e2374015SChao Yu 2380e2374015SChao Yu if (blk_addr == NEW_ADDR) 2381e2374015SChao Yu return -EINVAL; 2382e2374015SChao Yu 23835921aaa1SLiFan if (blk_addr == NULL_ADDR) { 23845921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 23855921aaa1SLiFan } else { 2386346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 23875921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2388346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2389e05df3b1SJaegeuk Kim } 2390e05df3b1SJaegeuk Kim } 2391e2374015SChao Yu 2392e2374015SChao Yu return 0; 23935921aaa1SLiFan } 2394e05df3b1SJaegeuk Kim 23952fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 23964ac91242SChao Yu { 23974ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 23984ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 23992fbaa25fSChao Yu int i; 24004ac91242SChao Yu 24014ac91242SChao Yu down_read(&curseg->journal_rwsem); 24024ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 24034ac91242SChao Yu block_t addr; 24044ac91242SChao Yu nid_t nid; 24054ac91242SChao Yu 24064ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 24074ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 24084ac91242SChao Yu if (addr == NULL_ADDR) 24095921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24104ac91242SChao Yu else 24114ac91242SChao Yu remove_free_nid(sbi, nid); 24124ac91242SChao Yu } 24134ac91242SChao Yu up_read(&curseg->journal_rwsem); 24142fbaa25fSChao Yu } 24152fbaa25fSChao Yu 2416e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 24174ac91242SChao Yu { 24184ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 24194ac91242SChao Yu unsigned int i, idx; 242097456574SFan Li nid_t nid; 24214ac91242SChao Yu 2422e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 24234ac91242SChao Yu 24244ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 24254ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 24264ac91242SChao Yu continue; 24274ac91242SChao Yu if (!nm_i->free_nid_count[i]) 24284ac91242SChao Yu continue; 24294ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 243097456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 243197456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 243297456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 243397456574SFan Li break; 24344ac91242SChao Yu 24354ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 24365921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24374ac91242SChao Yu 24389a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 24394ac91242SChao Yu goto out; 24404ac91242SChao Yu } 24414ac91242SChao Yu } 24424ac91242SChao Yu out: 24432fbaa25fSChao Yu scan_curseg_cache(sbi); 24444ac91242SChao Yu 2445e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 24464ac91242SChao Yu } 24474ac91242SChao Yu 2448e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 24494d57b86dSChao Yu bool sync, bool mount) 2450e05df3b1SJaegeuk Kim { 2451e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2452e2374015SChao Yu int i = 0, ret; 245355008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2454e05df3b1SJaegeuk Kim 2455e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2456e9cdd307SYunlei He nid = 0; 2457e9cdd307SYunlei He 2458e2cab031SSahitya Tummala if (unlikely(nid % NAT_ENTRY_PER_BLOCK)) 2459e2cab031SSahitya Tummala nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK; 2460e2cab031SSahitya Tummala 246155008d84SJaegeuk Kim /* Enough entries */ 24629a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2463e2374015SChao Yu return 0; 2464e05df3b1SJaegeuk Kim 24654d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2466e2374015SChao Yu return 0; 2467e05df3b1SJaegeuk Kim 24684ac91242SChao Yu if (!mount) { 24694ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 24704ac91242SChao Yu scan_free_nid_bits(sbi); 24714ac91242SChao Yu 247274986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2473e2374015SChao Yu return 0; 247422ad0b6aSJaegeuk Kim } 247522ad0b6aSJaegeuk Kim 247655008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 24774d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 247826879fb1SChao Yu META_NAT, true); 2479e05df3b1SJaegeuk Kim 2480e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 2481a5131193SJaegeuk Kim 2482e05df3b1SJaegeuk Kim while (1) { 248366e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 248466e83361SYunlei He nm_i->nat_block_bitmap)) { 2485e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2486e05df3b1SJaegeuk Kim 2487edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2488edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2489edc55aafSJaegeuk Kim } else { 2490e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2491e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2492edc55aafSJaegeuk Kim } 2493e2374015SChao Yu 2494e2374015SChao Yu if (ret) { 2495e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 2496dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2497edc55aafSJaegeuk Kim return ret; 2498e2374015SChao Yu } 249966e83361SYunlei He } 2500e05df3b1SJaegeuk Kim 2501e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2502cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2503e05df3b1SJaegeuk Kim nid = 0; 250455008d84SJaegeuk Kim 2505a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2506e05df3b1SJaegeuk Kim break; 2507e05df3b1SJaegeuk Kim } 2508e05df3b1SJaegeuk Kim 250955008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 251055008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2511e05df3b1SJaegeuk Kim 2512e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 25132fbaa25fSChao Yu scan_curseg_cache(sbi); 2514dfc08a12SChao Yu 2515e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 25162db2388fSChao Yu 25174d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2518ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2519e2374015SChao Yu 2520e2374015SChao Yu return 0; 2521e05df3b1SJaegeuk Kim } 2522e05df3b1SJaegeuk Kim 2523e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 25242411cf5bSChao Yu { 2525e2374015SChao Yu int ret; 2526e2374015SChao Yu 25272411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2528e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 25292411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2530e2374015SChao Yu 2531e2374015SChao Yu return ret; 25322411cf5bSChao Yu } 25332411cf5bSChao Yu 2534e05df3b1SJaegeuk Kim /* 2535e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2536e05df3b1SJaegeuk Kim * from second parameter of this function. 2537e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2538e05df3b1SJaegeuk Kim */ 25394d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2540e05df3b1SJaegeuk Kim { 2541e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2542e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2543e05df3b1SJaegeuk Kim retry: 2544*c40e15a9SYangtao Li if (time_to_inject(sbi, FAULT_ALLOC_NID)) 2545cb78942bSJaegeuk Kim return false; 25467fa750a1SArnd Bergmann 2547b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2548e05df3b1SJaegeuk Kim 254904d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 255004d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 255104d47e67SChao Yu return false; 255204d47e67SChao Yu } 2553e05df3b1SJaegeuk Kim 25544d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 25554d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 25569a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 25579a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2558b8559dc2SChao Yu struct free_nid, list); 2559e05df3b1SJaegeuk Kim *nid = i->nid; 2560b8559dc2SChao Yu 2561a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 256204d47e67SChao Yu nm_i->available_nids--; 25634ac91242SChao Yu 2564346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 25654ac91242SChao Yu 2566b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2567e05df3b1SJaegeuk Kim return true; 2568e05df3b1SJaegeuk Kim } 2569b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 257055008d84SJaegeuk Kim 257155008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2572f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 257355008d84SJaegeuk Kim goto retry; 2574f84262b0SJaegeuk Kim return false; 257555008d84SJaegeuk Kim } 2576e05df3b1SJaegeuk Kim 25770a8165d7SJaegeuk Kim /* 25784d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2579e05df3b1SJaegeuk Kim */ 25804d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2581e05df3b1SJaegeuk Kim { 2582e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2583e05df3b1SJaegeuk Kim struct free_nid *i; 2584e05df3b1SJaegeuk Kim 2585b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25868a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2587b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2588a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2589b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2590cf0ee0f0SChao Yu 2591cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2592e05df3b1SJaegeuk Kim } 2593e05df3b1SJaegeuk Kim 25940a8165d7SJaegeuk Kim /* 25954d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2596e05df3b1SJaegeuk Kim */ 25974d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2598e05df3b1SJaegeuk Kim { 259949952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 260049952fa1SJaegeuk Kim struct free_nid *i; 2601cf0ee0f0SChao Yu bool need_free = false; 260249952fa1SJaegeuk Kim 260365985d93SJaegeuk Kim if (!nid) 260465985d93SJaegeuk Kim return; 260565985d93SJaegeuk Kim 2606b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26078a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2608b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2609b8559dc2SChao Yu 26104d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2611a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2612cf0ee0f0SChao Yu need_free = true; 261395630cbaSHaicheng Li } else { 2614a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 261595630cbaSHaicheng Li } 261604d47e67SChao Yu 261704d47e67SChao Yu nm_i->available_nids++; 261804d47e67SChao Yu 2619346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 26204ac91242SChao Yu 2621b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2622cf0ee0f0SChao Yu 2623cf0ee0f0SChao Yu if (need_free) 2624cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2625e05df3b1SJaegeuk Kim } 2626e05df3b1SJaegeuk Kim 26274d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 262831696580SChao Yu { 262931696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 263031696580SChao Yu int nr = nr_shrink; 263131696580SChao Yu 26329a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2633ad4edb83SJaegeuk Kim return 0; 2634ad4edb83SJaegeuk Kim 263531696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 263631696580SChao Yu return 0; 263731696580SChao Yu 2638042be373SChao Yu while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) { 2639042be373SChao Yu struct free_nid *i, *next; 2640042be373SChao Yu unsigned int batch = SHRINK_NID_BATCH_SIZE; 2641042be373SChao Yu 2642b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26439a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2644042be373SChao Yu if (!nr_shrink || !batch || 26459a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 264631696580SChao Yu break; 2647a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 264831696580SChao Yu kmem_cache_free(free_nid_slab, i); 264931696580SChao Yu nr_shrink--; 2650042be373SChao Yu batch--; 265131696580SChao Yu } 2652b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2653042be373SChao Yu } 2654042be373SChao Yu 265531696580SChao Yu mutex_unlock(&nm_i->build_lock); 265631696580SChao Yu 265731696580SChao Yu return nr - nr_shrink; 265831696580SChao Yu } 265931696580SChao Yu 26609627a7b3SChao Yu int f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 266128cdce04SChao Yu { 266228cdce04SChao Yu void *src_addr, *dst_addr; 266328cdce04SChao Yu size_t inline_size; 266428cdce04SChao Yu struct page *ipage; 266528cdce04SChao Yu struct f2fs_inode *ri; 266628cdce04SChao Yu 26674d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 26689627a7b3SChao Yu if (IS_ERR(ipage)) 26699627a7b3SChao Yu return PTR_ERR(ipage); 267028cdce04SChao Yu 2671e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 26721eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 267396dd0251SChao Yu if (!f2fs_has_inline_xattr(inode)) { 26741eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 267596dd0251SChao Yu stat_inc_inline_xattr(inode); 267696dd0251SChao Yu } 26771eca05aaSYunlei He } else { 267896dd0251SChao Yu if (f2fs_has_inline_xattr(inode)) { 267996dd0251SChao Yu stat_dec_inline_xattr(inode); 268091942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 268196dd0251SChao Yu } 2682e3b4d43fSJaegeuk Kim goto update_inode; 2683e3b4d43fSJaegeuk Kim } 2684e3b4d43fSJaegeuk Kim 26856afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 26866afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 268728cdce04SChao Yu inline_size = inline_xattr_size(inode); 268828cdce04SChao Yu 2689bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 269028cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2691e3b4d43fSJaegeuk Kim update_inode: 26924d57b86dSChao Yu f2fs_update_inode(inode, ipage); 269328cdce04SChao Yu f2fs_put_page(ipage, 1); 26949627a7b3SChao Yu return 0; 269528cdce04SChao Yu } 269628cdce04SChao Yu 26974d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2698abb2366cSJaegeuk Kim { 26994081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2700abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 270187905682SYunlei He nid_t new_xnid; 270287905682SYunlei He struct dnode_of_data dn; 2703abb2366cSJaegeuk Kim struct node_info ni; 2704d260081cSChao Yu struct page *xpage; 27057735730dSChao Yu int err; 2706abb2366cSJaegeuk Kim 2707abb2366cSJaegeuk Kim if (!prev_xnid) 2708abb2366cSJaegeuk Kim goto recover_xnid; 2709abb2366cSJaegeuk Kim 2710d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2711a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, prev_xnid, &ni, false); 27127735730dSChao Yu if (err) 27137735730dSChao Yu return err; 27147735730dSChao Yu 27154d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2716000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2717479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2718abb2366cSJaegeuk Kim 2719abb2366cSJaegeuk Kim recover_xnid: 2720d260081cSChao Yu /* 2: update xattr nid in inode */ 27214d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 272287905682SYunlei He return -ENOSPC; 272387905682SYunlei He 272487905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 27254d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 272687905682SYunlei He if (IS_ERR(xpage)) { 27274d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 272887905682SYunlei He return PTR_ERR(xpage); 272987905682SYunlei He } 273087905682SYunlei He 27314d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 27324d57b86dSChao Yu f2fs_update_inode_page(inode); 2733abb2366cSJaegeuk Kim 2734d260081cSChao Yu /* 3: update and set xattr node page dirty */ 273587905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2736d260081cSChao Yu 2737d260081cSChao Yu set_page_dirty(xpage); 2738d260081cSChao Yu f2fs_put_page(xpage, 1); 2739abb2366cSJaegeuk Kim 2740d260081cSChao Yu return 0; 2741abb2366cSJaegeuk Kim } 2742abb2366cSJaegeuk Kim 27434d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2744e05df3b1SJaegeuk Kim { 274558bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2746e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2747e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2748e05df3b1SJaegeuk Kim struct page *ipage; 27497735730dSChao Yu int err; 2750e05df3b1SJaegeuk Kim 2751a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, ino, &old_ni, false); 27527735730dSChao Yu if (err) 27537735730dSChao Yu return err; 2754e8271fa3SJaegeuk Kim 2755e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2756e8271fa3SJaegeuk Kim return -EINVAL; 2757e8ea9b3dSJaegeuk Kim retry: 2758300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2759e8ea9b3dSJaegeuk Kim if (!ipage) { 27604034247aSNeilBrown memalloc_retry_wait(GFP_NOFS); 2761e8ea9b3dSJaegeuk Kim goto retry; 2762e8ea9b3dSJaegeuk Kim } 2763e05df3b1SJaegeuk Kim 2764e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2765b8559dc2SChao Yu remove_free_nid(sbi, ino); 2766e05df3b1SJaegeuk Kim 2767237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2768e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2769e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2770ef2a0071SChao Yu set_cold_node(ipage, false); 2771e05df3b1SJaegeuk Kim 277258bfaf44SJaegeuk Kim src = F2FS_INODE(page); 277358bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2774e05df3b1SJaegeuk Kim 277536218b81SZheng Yongjun memcpy(dst, src, offsetof(struct f2fs_inode, i_ext)); 277658bfaf44SJaegeuk Kim dst->i_size = 0; 277758bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 277858bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 277958bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 27807a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 27815c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 27827a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 27836afc662eSChao Yu 27847beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 27856afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27866afc662eSChao Yu i_inline_xattr_size)) 27876afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 27886afc662eSChao Yu 27897beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 27905c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27915c57132eSChao Yu i_projid)) 27925c57132eSChao Yu dst->i_projid = src->i_projid; 27935cd1f387SChao Yu 27947beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 27955cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27965cd1f387SChao Yu i_crtime_nsec)) { 27975cd1f387SChao Yu dst->i_crtime = src->i_crtime; 27985cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 27995cd1f387SChao Yu } 28005c57132eSChao Yu } 2801e05df3b1SJaegeuk Kim 2802e05df3b1SJaegeuk Kim new_ni = old_ni; 2803e05df3b1SJaegeuk Kim new_ni.ino = ino; 2804e05df3b1SJaegeuk Kim 28050abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 280665e5cd0aSJaegeuk Kim WARN_ON(1); 2807479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2808e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2809617deb8cSJaegeuk Kim set_page_dirty(ipage); 2810e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2811e05df3b1SJaegeuk Kim return 0; 2812e05df3b1SJaegeuk Kim } 2813e05df3b1SJaegeuk Kim 28147735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2815e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2816e05df3b1SJaegeuk Kim { 2817e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2818e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2819e05df3b1SJaegeuk Kim block_t addr; 28209ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2821e05df3b1SJaegeuk Kim 2822e05df3b1SJaegeuk Kim /* scan the node segment */ 2823e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2824e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2825e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2826e05df3b1SJaegeuk Kim 28279ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 28285f7136dbSMatthew Wilcox (Oracle) nrpages = bio_max_segs(last_offset - i); 2829393ff91fSJaegeuk Kim 28309af0ff1cSChao Yu /* readahead node pages */ 28314d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 28329af0ff1cSChao Yu 28339ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 28344d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2835393ff91fSJaegeuk Kim 28367735730dSChao Yu if (IS_ERR(page)) 28377735730dSChao Yu return PTR_ERR(page); 28387735730dSChao Yu 28399ecf4b80SChao Yu rn = F2FS_NODE(page); 2840393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2841393ff91fSJaegeuk Kim sum_entry->version = 0; 2842393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 28439af0ff1cSChao Yu sum_entry++; 28449ecf4b80SChao Yu f2fs_put_page(page, 1); 28459af0ff1cSChao Yu } 2846bac4eef6SChao Yu 28479ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2848bac4eef6SChao Yu addr + nrpages); 28499af0ff1cSChao Yu } 28507735730dSChao Yu return 0; 2851e05df3b1SJaegeuk Kim } 2852e05df3b1SJaegeuk Kim 2853aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2854e05df3b1SJaegeuk Kim { 2855e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2856e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2857b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2858e05df3b1SJaegeuk Kim int i; 2859e05df3b1SJaegeuk Kim 2860b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2861dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2862e05df3b1SJaegeuk Kim struct nat_entry *ne; 2863e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2864dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2865e05df3b1SJaegeuk Kim 2866b862676eSChao Yu if (f2fs_check_nid_range(sbi, nid)) 2867b862676eSChao Yu continue; 2868b862676eSChao Yu 2869dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 28709be32d72SJaegeuk Kim 2871e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2872e05df3b1SJaegeuk Kim if (!ne) { 287332410577SChao Yu ne = __alloc_nat_entry(sbi, nid, true); 287412f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 28759be32d72SJaegeuk Kim } 287604d47e67SChao Yu 287704d47e67SChao Yu /* 287804d47e67SChao Yu * if a free nat in journal has not been used after last 287904d47e67SChao Yu * checkpoint, we should remove it from available nids, 288004d47e67SChao Yu * since later we will add it again. 288104d47e67SChao Yu */ 288204d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 288304d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 288404d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 288504d47e67SChao Yu nm_i->available_nids--; 288604d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 288704d47e67SChao Yu } 288804d47e67SChao Yu 2889e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2890e05df3b1SJaegeuk Kim } 2891dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2892b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2893e05df3b1SJaegeuk Kim } 2894e05df3b1SJaegeuk Kim 2895309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2896309cc2b6SJaegeuk Kim struct list_head *head, int max) 2897e05df3b1SJaegeuk Kim { 2898309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2899e05df3b1SJaegeuk Kim 2900309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2901309cc2b6SJaegeuk Kim goto add_out; 2902e05df3b1SJaegeuk Kim 2903309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2904309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2905309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2906309cc2b6SJaegeuk Kim return; 2907309cc2b6SJaegeuk Kim } 2908309cc2b6SJaegeuk Kim } 2909309cc2b6SJaegeuk Kim add_out: 2910309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2911aec71382SChao Yu } 2912aec71382SChao Yu 291394c821fbSChao Yu static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs, 291494c821fbSChao Yu unsigned int valid) 291594c821fbSChao Yu { 291694c821fbSChao Yu if (valid == 0) { 291794c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->empty_nat_bits); 291894c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 291994c821fbSChao Yu return; 292094c821fbSChao Yu } 292194c821fbSChao Yu 292294c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->empty_nat_bits); 292394c821fbSChao Yu if (valid == NAT_ENTRY_PER_BLOCK) 292494c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->full_nat_bits); 292594c821fbSChao Yu else 292694c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 292794c821fbSChao Yu } 292894c821fbSChao Yu 292994c821fbSChao Yu static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 293022ad0b6aSJaegeuk Kim struct page *page) 293122ad0b6aSJaegeuk Kim { 293222ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 293322ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 293422ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 293522ad0b6aSJaegeuk Kim int valid = 0; 293637a0ab2aSFan Li int i = 0; 293722ad0b6aSJaegeuk Kim 293894c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 293922ad0b6aSJaegeuk Kim return; 294022ad0b6aSJaegeuk Kim 294137a0ab2aSFan Li if (nat_index == 0) { 294237a0ab2aSFan Li valid = 1; 294337a0ab2aSFan Li i = 1; 294437a0ab2aSFan Li } 294537a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 294636af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 294722ad0b6aSJaegeuk Kim valid++; 294822ad0b6aSJaegeuk Kim } 294994c821fbSChao Yu 295094c821fbSChao Yu __update_nat_bits(nm_i, nat_index, valid); 295122ad0b6aSJaegeuk Kim } 295222ad0b6aSJaegeuk Kim 295394c821fbSChao Yu void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi) 295494c821fbSChao Yu { 295594c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 295694c821fbSChao Yu unsigned int nat_ofs; 295794c821fbSChao Yu 2958e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 295994c821fbSChao Yu 296094c821fbSChao Yu for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) { 296194c821fbSChao Yu unsigned int valid = 0, nid_ofs = 0; 296294c821fbSChao Yu 296394c821fbSChao Yu /* handle nid zero due to it should never be used */ 296494c821fbSChao Yu if (unlikely(nat_ofs == 0)) { 296594c821fbSChao Yu valid = 1; 296694c821fbSChao Yu nid_ofs = 1; 296794c821fbSChao Yu } 296894c821fbSChao Yu 296994c821fbSChao Yu for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) { 297094c821fbSChao Yu if (!test_bit_le(nid_ofs, 297194c821fbSChao Yu nm_i->free_nid_bitmap[nat_ofs])) 297294c821fbSChao Yu valid++; 297394c821fbSChao Yu } 297494c821fbSChao Yu 297594c821fbSChao Yu __update_nat_bits(nm_i, nat_ofs, valid); 297694c821fbSChao Yu } 297794c821fbSChao Yu 2978e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 297922ad0b6aSJaegeuk Kim } 298022ad0b6aSJaegeuk Kim 2981edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 298222ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2983309cc2b6SJaegeuk Kim { 2984309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2985b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2986309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2987309cc2b6SJaegeuk Kim bool to_journal = true; 2988309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2989309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2990309cc2b6SJaegeuk Kim struct page *page = NULL; 2991aec71382SChao Yu 2992aec71382SChao Yu /* 2993aec71382SChao Yu * there are two steps to flush nat entries: 2994aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2995aec71382SChao Yu * #2, flush nat entries to nat page. 2996aec71382SChao Yu */ 299794c821fbSChao Yu if ((cpc->reason & CP_UMOUNT) || 299822ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2999aec71382SChao Yu to_journal = false; 3000aec71382SChao Yu 3001aec71382SChao Yu if (to_journal) { 3002b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 3003aec71382SChao Yu } else { 3004e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 3005edc55aafSJaegeuk Kim if (IS_ERR(page)) 3006edc55aafSJaegeuk Kim return PTR_ERR(page); 3007edc55aafSJaegeuk Kim 3008e05df3b1SJaegeuk Kim nat_blk = page_address(page); 30099850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 3010e05df3b1SJaegeuk Kim } 3011e05df3b1SJaegeuk Kim 3012aec71382SChao Yu /* flush dirty nats in nat entry set */ 3013309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 3014aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 3015aec71382SChao Yu nid_t nid = nat_get_nid(ne); 3016aec71382SChao Yu int offset; 3017aec71382SChao Yu 3018febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 3019309cc2b6SJaegeuk Kim 3020aec71382SChao Yu if (to_journal) { 30214d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 3022aec71382SChao Yu NAT_JOURNAL, nid, 1); 30239850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 3024dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 3025dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 3026aec71382SChao Yu } else { 3027aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 3028aec71382SChao Yu } 3029aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 303088bd02c9SJaegeuk Kim nat_reset_flag(ne); 30310b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 303204d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 30335921aaa1SLiFan add_free_nid(sbi, nid, false, true); 30344ac91242SChao Yu } else { 30354ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 3036346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 303704d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 303804d47e67SChao Yu } 3039e05df3b1SJaegeuk Kim } 3040aec71382SChao Yu 304122ad0b6aSJaegeuk Kim if (to_journal) { 3042b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 304322ad0b6aSJaegeuk Kim } else { 304494c821fbSChao Yu update_nat_bits(sbi, start_nid, page); 3045e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 304622ad0b6aSJaegeuk Kim } 3047aec71382SChao Yu 304859c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 304959c9081bSYunlei He if (!set->entry_cnt) { 3050309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 3051309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 3052309cc2b6SJaegeuk Kim } 3053edc55aafSJaegeuk Kim return 0; 305459c9081bSYunlei He } 3055aec71382SChao Yu 3056309cc2b6SJaegeuk Kim /* 3057309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 3058309cc2b6SJaegeuk Kim */ 3059edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 3060309cc2b6SJaegeuk Kim { 3061309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3062309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 3063b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 30647aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3065309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 3066309cc2b6SJaegeuk Kim unsigned int found; 3067309cc2b6SJaegeuk Kim nid_t set_idx = 0; 3068309cc2b6SJaegeuk Kim LIST_HEAD(sets); 3069edc55aafSJaegeuk Kim int err = 0; 3070309cc2b6SJaegeuk Kim 3071a95ba66aSJaegeuk Kim /* 3072a95ba66aSJaegeuk Kim * during unmount, let's flush nat_bits before checking 3073a95ba66aSJaegeuk Kim * nat_cnt[DIRTY_NAT]. 3074a95ba66aSJaegeuk Kim */ 307594c821fbSChao Yu if (cpc->reason & CP_UMOUNT) { 3076e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 30777f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 3078e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 30797f2ecdd8SJaegeuk Kim } 30807f2ecdd8SJaegeuk Kim 3081a95ba66aSJaegeuk Kim if (!nm_i->nat_cnt[DIRTY_NAT]) 3082edc55aafSJaegeuk Kim return 0; 3083a5131193SJaegeuk Kim 3084e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3085a5131193SJaegeuk Kim 3086309cc2b6SJaegeuk Kim /* 3087309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 3088309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 3089309cc2b6SJaegeuk Kim * into nat entry set. 3090309cc2b6SJaegeuk Kim */ 309194c821fbSChao Yu if (cpc->reason & CP_UMOUNT || 3092a95ba66aSJaegeuk Kim !__has_cursum_space(journal, 3093a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL)) 3094309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 3095309cc2b6SJaegeuk Kim 3096309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 30977aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 3098309cc2b6SJaegeuk Kim unsigned idx; 30995f029c04SYi Zhuang 3100309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 3101309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 3102309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 3103dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 3104309cc2b6SJaegeuk Kim } 3105309cc2b6SJaegeuk Kim 3106309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 3107edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 3108edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 3109edc55aafSJaegeuk Kim if (err) 3110edc55aafSJaegeuk Kim break; 3111edc55aafSJaegeuk Kim } 3112309cc2b6SJaegeuk Kim 3113e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 311459c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 3115edc55aafSJaegeuk Kim 3116edc55aafSJaegeuk Kim return err; 3117e05df3b1SJaegeuk Kim } 3118e05df3b1SJaegeuk Kim 311922ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 312022ad0b6aSJaegeuk Kim { 312122ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 312222ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 312322ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 312422ad0b6aSJaegeuk Kim unsigned int i; 312522ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 312622ad0b6aSJaegeuk Kim block_t nat_bits_addr; 312722ad0b6aSJaegeuk Kim 3128df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 31290b6d4ca0SEric Biggers nm_i->nat_bits = f2fs_kvzalloc(sbi, 3130acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 313122ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 313222ad0b6aSJaegeuk Kim return -ENOMEM; 313322ad0b6aSJaegeuk Kim 313494c821fbSChao Yu nm_i->full_nat_bits = nm_i->nat_bits + 8; 313594c821fbSChao Yu nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 313694c821fbSChao Yu 313794c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 313894c821fbSChao Yu return 0; 313994c821fbSChao Yu 314022ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 314122ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 314222ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 31437735730dSChao Yu struct page *page; 31447735730dSChao Yu 31457735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 31463b30eb19SChao Yu if (IS_ERR(page)) 31477735730dSChao Yu return PTR_ERR(page); 314822ad0b6aSJaegeuk Kim 314922ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 315022ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 315122ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 315222ad0b6aSJaegeuk Kim } 315322ad0b6aSJaegeuk Kim 3154ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 315522ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 315694c821fbSChao Yu clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG); 315794c821fbSChao Yu f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)", 315894c821fbSChao Yu cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits)); 315922ad0b6aSJaegeuk Kim return 0; 316022ad0b6aSJaegeuk Kim } 316122ad0b6aSJaegeuk Kim 3162dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 316322ad0b6aSJaegeuk Kim return 0; 316422ad0b6aSJaegeuk Kim } 316522ad0b6aSJaegeuk Kim 3166bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 31677041d5d2SChao Yu { 31687041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31697041d5d2SChao Yu unsigned int i = 0; 31707041d5d2SChao Yu nid_t nid, last_nid; 31717041d5d2SChao Yu 317294c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 31737041d5d2SChao Yu return; 31747041d5d2SChao Yu 31757041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31767041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 31777041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31787041d5d2SChao Yu break; 31797041d5d2SChao Yu 31807041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31817041d5d2SChao Yu 31827041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 3183f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 31847041d5d2SChao Yu 3185346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 31867041d5d2SChao Yu for (; nid < last_nid; nid++) 3187346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 3188346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 31897041d5d2SChao Yu } 31907041d5d2SChao Yu 31917041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31927041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 31937041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31947041d5d2SChao Yu break; 31957041d5d2SChao Yu 31967041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31977041d5d2SChao Yu } 31987041d5d2SChao Yu } 31997041d5d2SChao Yu 3200e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3201e05df3b1SJaegeuk Kim { 3202e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3203e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3204e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 320522ad0b6aSJaegeuk Kim unsigned int nat_segs; 320622ad0b6aSJaegeuk Kim int err; 3207e05df3b1SJaegeuk Kim 3208e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3209e05df3b1SJaegeuk Kim 3210e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3211e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 321222ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 321322ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 32147ee0eeabSJaegeuk Kim 3215b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 321604d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 321727cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 32189a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 32199a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3220cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3221ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 32222304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 322347c8ebccSJaegeuk Kim nm_i->max_rf_node_blocks = DEF_RF_NODE_BLOCKS; 3224e05df3b1SJaegeuk Kim 32258a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 32269a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3227769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3228769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3229e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 323022969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3231e05df3b1SJaegeuk Kim 3232e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3233b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3234e4544b63STim Murray init_f2fs_rwsem(&nm_i->nat_tree_lock); 3235e05df3b1SJaegeuk Kim 3236e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 323779b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3238e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 323979b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 324079b5793bSAlexandru Gheorghiu GFP_KERNEL); 324179b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 324279b5793bSAlexandru Gheorghiu return -ENOMEM; 3243599a09b2SChao Yu 324422ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 324522ad0b6aSJaegeuk Kim if (err) 324622ad0b6aSJaegeuk Kim return err; 324722ad0b6aSJaegeuk Kim 3248599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3249599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3250599a09b2SChao Yu GFP_KERNEL); 3251599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3252599a09b2SChao Yu return -ENOMEM; 3253599a09b2SChao Yu #endif 3254599a09b2SChao Yu 3255e05df3b1SJaegeuk Kim return 0; 3256e05df3b1SJaegeuk Kim } 3257e05df3b1SJaegeuk Kim 32589f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 32594ac91242SChao Yu { 32604ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3261bb1105e4SJaegeuk Kim int i; 32624ac91242SChao Yu 3263026f0507SKees Cook nm_i->free_nid_bitmap = 32640b6d4ca0SEric Biggers f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *), 3265026f0507SKees Cook nm_i->nat_blocks), 3266026f0507SKees Cook GFP_KERNEL); 32674ac91242SChao Yu if (!nm_i->free_nid_bitmap) 32684ac91242SChao Yu return -ENOMEM; 32694ac91242SChao Yu 3270bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3271bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3272e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 327368c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3274bb1105e4SJaegeuk Kim return -ENOMEM; 3275bb1105e4SJaegeuk Kim } 3276bb1105e4SJaegeuk Kim 3277628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 32784ac91242SChao Yu GFP_KERNEL); 32794ac91242SChao Yu if (!nm_i->nat_block_bitmap) 32804ac91242SChao Yu return -ENOMEM; 3281586d1492SChao Yu 32829d2a789cSKees Cook nm_i->free_nid_count = 32839d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 32849d2a789cSKees Cook nm_i->nat_blocks), 32859d2a789cSKees Cook GFP_KERNEL); 3286586d1492SChao Yu if (!nm_i->free_nid_count) 3287586d1492SChao Yu return -ENOMEM; 32884ac91242SChao Yu return 0; 32894ac91242SChao Yu } 32904ac91242SChao Yu 32914d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3292e05df3b1SJaegeuk Kim { 3293e05df3b1SJaegeuk Kim int err; 3294e05df3b1SJaegeuk Kim 3295acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3296acbf054dSChao Yu GFP_KERNEL); 3297e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3298e05df3b1SJaegeuk Kim return -ENOMEM; 3299e05df3b1SJaegeuk Kim 3300e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3301e05df3b1SJaegeuk Kim if (err) 3302e05df3b1SJaegeuk Kim return err; 3303e05df3b1SJaegeuk Kim 33044ac91242SChao Yu err = init_free_nid_cache(sbi); 33054ac91242SChao Yu if (err) 33064ac91242SChao Yu return err; 33074ac91242SChao Yu 33087041d5d2SChao Yu /* load free nid status from nat_bits table */ 33097041d5d2SChao Yu load_free_nid_bitmap(sbi); 33107041d5d2SChao Yu 3311e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3312e05df3b1SJaegeuk Kim } 3313e05df3b1SJaegeuk Kim 33144d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3315e05df3b1SJaegeuk Kim { 3316e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3317e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3318e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 33197aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3320e05df3b1SJaegeuk Kim nid_t nid = 0; 3321e05df3b1SJaegeuk Kim unsigned int found; 3322e05df3b1SJaegeuk Kim 3323e05df3b1SJaegeuk Kim if (!nm_i) 3324e05df3b1SJaegeuk Kim return; 3325e05df3b1SJaegeuk Kim 3326e05df3b1SJaegeuk Kim /* destroy free nid list */ 3327b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 33289a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3329a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3330b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3331cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3332b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3333e05df3b1SJaegeuk Kim } 33349a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 33359a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 33369a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3337b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3338e05df3b1SJaegeuk Kim 3339e05df3b1SJaegeuk Kim /* destroy nat cache */ 3340e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3341e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3342e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3343e05df3b1SJaegeuk Kim unsigned idx; 33447aed0d45SJaegeuk Kim 3345b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 334622969158SChao Yu for (idx = 0; idx < found; idx++) { 334722969158SChao Yu spin_lock(&nm_i->nat_list_lock); 334822969158SChao Yu list_del(&natvec[idx]->list); 334922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 335022969158SChao Yu 3351b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3352e05df3b1SJaegeuk Kim } 335322969158SChao Yu } 3354a95ba66aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]); 33557aed0d45SJaegeuk Kim 33567aed0d45SJaegeuk Kim /* destroy nat set cache */ 33577aed0d45SJaegeuk Kim nid = 0; 33587aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 33597aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 33607aed0d45SJaegeuk Kim unsigned idx; 33617aed0d45SJaegeuk Kim 33627aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 33637aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 33647aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 33657aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 33667aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 33677aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 33687aed0d45SJaegeuk Kim } 33697aed0d45SJaegeuk Kim } 3370e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 3371e05df3b1SJaegeuk Kim 33724ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3373bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3374bb1105e4SJaegeuk Kim int i; 3375bb1105e4SJaegeuk Kim 3376bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3377bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 33785222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3379bb1105e4SJaegeuk Kim } 3380586d1492SChao Yu kvfree(nm_i->free_nid_count); 33814ac91242SChao Yu 33825222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 33835222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3384599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 33855222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3386599a09b2SChao Yu #endif 3387e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3388c8eb7024SChao Yu kfree(nm_i); 3389e05df3b1SJaegeuk Kim } 3390e05df3b1SJaegeuk Kim 33914d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3392e05df3b1SJaegeuk Kim { 339398510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3394e8512d2eSGu Zheng sizeof(struct nat_entry)); 3395e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3396aec71382SChao Yu goto fail; 3397e05df3b1SJaegeuk Kim 339898510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3399e8512d2eSGu Zheng sizeof(struct free_nid)); 3400aec71382SChao Yu if (!free_nid_slab) 3401ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3402aec71382SChao Yu 340398510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3404aec71382SChao Yu sizeof(struct nat_entry_set)); 3405aec71382SChao Yu if (!nat_entry_set_slab) 3406ce3e6d25SMarkus Elfring goto destroy_free_nid; 340750fa53ecSChao Yu 340898510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 340950fa53ecSChao Yu sizeof(struct fsync_node_entry)); 341050fa53ecSChao Yu if (!fsync_node_entry_slab) 341150fa53ecSChao Yu goto destroy_nat_entry_set; 3412e05df3b1SJaegeuk Kim return 0; 3413aec71382SChao Yu 341450fa53ecSChao Yu destroy_nat_entry_set: 341550fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3416ce3e6d25SMarkus Elfring destroy_free_nid: 3417aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3418ce3e6d25SMarkus Elfring destroy_nat_entry: 3419aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3420aec71382SChao Yu fail: 3421aec71382SChao Yu return -ENOMEM; 3422e05df3b1SJaegeuk Kim } 3423e05df3b1SJaegeuk Kim 34244d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3425e05df3b1SJaegeuk Kim { 342650fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3427aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3428e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3429e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3430e05df3b1SJaegeuk Kim } 3431