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); 3910f966bbSChao Yu return -EFSCORRUPTED; 40a4f843bdSJaegeuk Kim } 41a4f843bdSJaegeuk Kim return 0; 42a4f843bdSJaegeuk Kim } 43a4f843bdSJaegeuk Kim 444d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 45cdfc41c1SJaegeuk Kim { 466fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 47d6d2b491SSahitya Tummala struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 48cdfc41c1SJaegeuk Kim struct sysinfo val; 49e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 50cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 516fb03f3aSJaegeuk Kim bool res = false; 52cdfc41c1SJaegeuk Kim 53d6d2b491SSahitya Tummala if (!nm_i) 54d6d2b491SSahitya Tummala return true; 55d6d2b491SSahitya Tummala 56cdfc41c1SJaegeuk Kim si_meminfo(&val); 57e5e7ea3cSJaegeuk Kim 58e5e7ea3cSJaegeuk Kim /* only uses low memory */ 59e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 60e5e7ea3cSJaegeuk Kim 61429511cdSChao Yu /* 62429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 63429511cdSChao Yu */ 646fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 659a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 66b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 67e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 686fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 69a95ba66aSJaegeuk Kim mem_size = (nm_i->nat_cnt[TOTAL_NAT] * 70a95ba66aSJaegeuk Kim sizeof(struct nat_entry)) >> PAGE_SHIFT; 71e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 72e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 73e589c2c4SJaegeuk Kim res = false; 74a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 75a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 76a1257023SJaegeuk Kim return false; 77a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 78a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 79e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 80e5e7ea3cSJaegeuk Kim int i; 81e5e7ea3cSJaegeuk Kim 8239d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 838f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 848f73cbb7SKinglong Mee sizeof(struct ino_entry); 858f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 86e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 87429511cdSChao Yu } else if (type == EXTENT_CACHE) { 887441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 897441ccefSJaegeuk Kim sizeof(struct extent_tree) + 90429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 9109cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 92429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 9357864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 9457864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 9557864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 9657864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 97d6d2b491SSahitya Tummala } else if (type == DISCARD_CACHE) { 98d6d2b491SSahitya Tummala mem_size = (atomic_read(&dcc->discard_cmd_cnt) * 99d6d2b491SSahitya Tummala sizeof(struct discard_cmd)) >> PAGE_SHIFT; 100d6d2b491SSahitya Tummala res = mem_size < (avail_ram * nm_i->ram_thresh / 100); 1016ce19affSChao Yu } else if (type == COMPRESS_PAGE) { 1026ce19affSChao Yu #ifdef CONFIG_F2FS_FS_COMPRESSION 1036ce19affSChao Yu unsigned long free_ram = val.freeram; 1046ce19affSChao Yu 1056ce19affSChao Yu /* 1066ce19affSChao Yu * free memory is lower than watermark or cached page count 1076ce19affSChao Yu * exceed threshold, deny caching compress page. 1086ce19affSChao Yu */ 1096ce19affSChao Yu res = (free_ram > avail_ram * sbi->compress_watermark / 100) && 1106ce19affSChao Yu (COMPRESS_MAPPING(sbi)->nrpages < 1116ce19affSChao Yu free_ram * sbi->compress_percent / 100); 1126ce19affSChao Yu #else 1136ce19affSChao Yu res = false; 1146ce19affSChao Yu #endif 1151e84371fSJaegeuk Kim } else { 1161663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 1171663cae4SJaegeuk Kim return true; 1186fb03f3aSJaegeuk Kim } 1196fb03f3aSJaegeuk Kim return res; 120cdfc41c1SJaegeuk Kim } 121cdfc41c1SJaegeuk Kim 122e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 123e05df3b1SJaegeuk Kim { 124e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1255ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 126e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 127aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 128e05df3b1SJaegeuk Kim } 129e05df3b1SJaegeuk Kim ClearPageUptodate(page); 130e05df3b1SJaegeuk Kim } 131e05df3b1SJaegeuk Kim 132e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 133e05df3b1SJaegeuk Kim { 1343acc4522SJaegeuk Kim return f2fs_get_meta_page_retry(sbi, current_nat_addr(sbi, nid)); 135e05df3b1SJaegeuk Kim } 136e05df3b1SJaegeuk Kim 137e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 138e05df3b1SJaegeuk Kim { 139e05df3b1SJaegeuk Kim struct page *src_page; 140e05df3b1SJaegeuk Kim struct page *dst_page; 141e05df3b1SJaegeuk Kim pgoff_t dst_off; 142e05df3b1SJaegeuk Kim void *src_addr; 143e05df3b1SJaegeuk Kim void *dst_addr; 144e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 145e05df3b1SJaegeuk Kim 14680551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 147e05df3b1SJaegeuk Kim 148e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 14980551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 150edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 151edc55aafSJaegeuk Kim return src_page; 1524d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1539850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 154e05df3b1SJaegeuk Kim 155e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 156e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 15709cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 158e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 159e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 160e05df3b1SJaegeuk Kim 161e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 162e05df3b1SJaegeuk Kim 163e05df3b1SJaegeuk Kim return dst_page; 164e05df3b1SJaegeuk Kim } 165e05df3b1SJaegeuk Kim 16632410577SChao Yu static struct nat_entry *__alloc_nat_entry(struct f2fs_sb_info *sbi, 16732410577SChao Yu nid_t nid, bool no_fail) 16812f9ef37SYunlei He { 16912f9ef37SYunlei He struct nat_entry *new; 17012f9ef37SYunlei He 17132410577SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, 17232410577SChao Yu GFP_F2FS_ZERO, no_fail, sbi); 17312f9ef37SYunlei He if (new) { 17412f9ef37SYunlei He nat_set_nid(new, nid); 17512f9ef37SYunlei He nat_reset_flag(new); 17612f9ef37SYunlei He } 17712f9ef37SYunlei He return new; 17812f9ef37SYunlei He } 17912f9ef37SYunlei He 18012f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 18112f9ef37SYunlei He { 18212f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 18312f9ef37SYunlei He } 18412f9ef37SYunlei He 18512f9ef37SYunlei He /* must be locked by nat_tree_lock */ 18612f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 18712f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 18812f9ef37SYunlei He { 18912f9ef37SYunlei He if (no_fail) 19012f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 19112f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 19212f9ef37SYunlei He return NULL; 19312f9ef37SYunlei He 19412f9ef37SYunlei He if (raw_ne) 19512f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 19622969158SChao Yu 19722969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19812f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 19922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 20022969158SChao Yu 201a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]++; 202a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 20312f9ef37SYunlei He return ne; 20412f9ef37SYunlei He } 20512f9ef37SYunlei He 206e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 207e05df3b1SJaegeuk Kim { 20822969158SChao Yu struct nat_entry *ne; 20922969158SChao Yu 21022969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 21122969158SChao Yu 21222969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 21322969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 21422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 21522969158SChao Yu if (!list_empty(&ne->list)) 21622969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 21722969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 21822969158SChao Yu } 21922969158SChao Yu 22022969158SChao Yu return ne; 221e05df3b1SJaegeuk Kim } 222e05df3b1SJaegeuk Kim 223e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 224e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 225e05df3b1SJaegeuk Kim { 226e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 227e05df3b1SJaegeuk Kim } 228e05df3b1SJaegeuk Kim 229e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 230e05df3b1SJaegeuk Kim { 231e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 232a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]--; 233a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 23412f9ef37SYunlei He __free_nat_entry(e); 235e05df3b1SJaegeuk Kim } 236e05df3b1SJaegeuk Kim 237780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 238309cc2b6SJaegeuk Kim struct nat_entry *ne) 239309cc2b6SJaegeuk Kim { 240309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 241309cc2b6SJaegeuk Kim struct nat_entry_set *head; 242309cc2b6SJaegeuk Kim 243309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 244309cc2b6SJaegeuk Kim if (!head) { 24532410577SChao Yu head = f2fs_kmem_cache_alloc(nat_entry_set_slab, 24632410577SChao Yu GFP_NOFS, true, NULL); 247309cc2b6SJaegeuk Kim 248309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 249309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 250309cc2b6SJaegeuk Kim head->set = set; 251309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2529be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 253309cc2b6SJaegeuk Kim } 254780de47cSChao Yu return head; 255780de47cSChao Yu } 256780de47cSChao Yu 257780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 258780de47cSChao Yu struct nat_entry *ne) 259780de47cSChao Yu { 260780de47cSChao Yu struct nat_entry_set *head; 261780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 262780de47cSChao Yu 263780de47cSChao Yu if (!new_ne) 264780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 265780de47cSChao Yu 266780de47cSChao Yu /* 267780de47cSChao Yu * update entry_cnt in below condition: 268780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 269780de47cSChao Yu * 2. update old block address to new one; 270780de47cSChao Yu */ 271780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 272780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 273780de47cSChao Yu head->entry_cnt++; 274780de47cSChao Yu 275780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 276febeca6dSChao Yu 277febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 278febeca6dSChao Yu goto refresh_list; 279febeca6dSChao Yu 280a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]++; 281a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 282309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 283febeca6dSChao Yu refresh_list: 28422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 285780de47cSChao Yu if (new_ne) 286febeca6dSChao Yu list_del_init(&ne->list); 287febeca6dSChao Yu else 288febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 28922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 290309cc2b6SJaegeuk Kim } 291309cc2b6SJaegeuk Kim 292309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2930b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 294309cc2b6SJaegeuk Kim { 29522969158SChao Yu spin_lock(&nm_i->nat_list_lock); 296309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 29722969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 29822969158SChao Yu 299309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 3000b28b71eSKinglong Mee set->entry_cnt--; 301a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]--; 302a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 303309cc2b6SJaegeuk Kim } 304309cc2b6SJaegeuk Kim 305309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 306309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 307309cc2b6SJaegeuk Kim { 308309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 309309cc2b6SJaegeuk Kim start, nr); 310309cc2b6SJaegeuk Kim } 311309cc2b6SJaegeuk Kim 31250fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 31350fa53ecSChao Yu { 31450fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 31550fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 31650fa53ecSChao Yu } 31750fa53ecSChao Yu 31850fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 31950fa53ecSChao Yu { 32050fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 32150fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 32250fa53ecSChao Yu sbi->fsync_seg_id = 0; 32350fa53ecSChao Yu sbi->fsync_node_num = 0; 32450fa53ecSChao Yu } 32550fa53ecSChao Yu 32650fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 32750fa53ecSChao Yu struct page *page) 32850fa53ecSChao Yu { 32950fa53ecSChao Yu struct fsync_node_entry *fn; 33050fa53ecSChao Yu unsigned long flags; 33150fa53ecSChao Yu unsigned int seq_id; 33250fa53ecSChao Yu 33332410577SChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, 33432410577SChao Yu GFP_NOFS, true, NULL); 33550fa53ecSChao Yu 33650fa53ecSChao Yu get_page(page); 33750fa53ecSChao Yu fn->page = page; 33850fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 33950fa53ecSChao Yu 34050fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 34150fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 34250fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 34350fa53ecSChao Yu seq_id = fn->seq_id; 34450fa53ecSChao Yu sbi->fsync_node_num++; 34550fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34650fa53ecSChao Yu 34750fa53ecSChao Yu return seq_id; 34850fa53ecSChao Yu } 34950fa53ecSChao Yu 35050fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 35150fa53ecSChao Yu { 35250fa53ecSChao Yu struct fsync_node_entry *fn; 35350fa53ecSChao Yu unsigned long flags; 35450fa53ecSChao Yu 35550fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 35650fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 35750fa53ecSChao Yu if (fn->page == page) { 35850fa53ecSChao Yu list_del(&fn->list); 35950fa53ecSChao Yu sbi->fsync_node_num--; 36050fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36150fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 36250fa53ecSChao Yu put_page(page); 36350fa53ecSChao Yu return; 36450fa53ecSChao Yu } 36550fa53ecSChao Yu } 36650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36750fa53ecSChao Yu f2fs_bug_on(sbi, 1); 36850fa53ecSChao Yu } 36950fa53ecSChao Yu 37050fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 37150fa53ecSChao Yu { 37250fa53ecSChao Yu unsigned long flags; 37350fa53ecSChao Yu 37450fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 37550fa53ecSChao Yu sbi->fsync_seg_id = 0; 37650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 37750fa53ecSChao Yu } 37850fa53ecSChao Yu 3794d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3802dcf51abSJaegeuk Kim { 3812dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3822dcf51abSJaegeuk Kim struct nat_entry *e; 3832dcf51abSJaegeuk Kim bool need = false; 3842dcf51abSJaegeuk Kim 385e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 3862dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3872dcf51abSJaegeuk Kim if (e) { 3882dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3892dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3902dcf51abSJaegeuk Kim need = true; 3912dcf51abSJaegeuk Kim } 392e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 3932dcf51abSJaegeuk Kim return need; 3942dcf51abSJaegeuk Kim } 3952dcf51abSJaegeuk Kim 3964d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 397e05df3b1SJaegeuk Kim { 398e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 399e05df3b1SJaegeuk Kim struct nat_entry *e; 40088bd02c9SJaegeuk Kim bool is_cp = true; 401e05df3b1SJaegeuk Kim 402e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 403e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 4047ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 40588bd02c9SJaegeuk Kim is_cp = false; 406e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 407e05df3b1SJaegeuk Kim return is_cp; 408e05df3b1SJaegeuk Kim } 409e05df3b1SJaegeuk Kim 4104d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 411b6fe5873SJaegeuk Kim { 412b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 413b6fe5873SJaegeuk Kim struct nat_entry *e; 41488bd02c9SJaegeuk Kim bool need_update = true; 415b6fe5873SJaegeuk Kim 416e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 41788bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 41888bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 41988bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 42088bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 42188bd02c9SJaegeuk Kim need_update = false; 422e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 42388bd02c9SJaegeuk Kim return need_update; 424b6fe5873SJaegeuk Kim } 425b6fe5873SJaegeuk Kim 42612f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4271515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 428e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 429e05df3b1SJaegeuk Kim { 4301515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 43112f9ef37SYunlei He struct nat_entry *new, *e; 4329be32d72SJaegeuk Kim 4330df035c7SJaegeuk Kim /* Let's mitigate lock contention of nat_tree_lock during checkpoint */ 434e4544b63STim Murray if (f2fs_rwsem_is_locked(&sbi->cp_global_sem)) 4350df035c7SJaegeuk Kim return; 4360df035c7SJaegeuk Kim 43732410577SChao Yu new = __alloc_nat_entry(sbi, nid, false); 43812f9ef37SYunlei He if (!new) 43912f9ef37SYunlei He return; 44012f9ef37SYunlei He 441e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 442e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 44312f9ef37SYunlei He if (!e) 44412f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 44512f9ef37SYunlei He else 4460c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4470c0b471eSEric Biggers nat_get_blkaddr(e) != 4480c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4491515aef0SChao Yu nat_get_version(e) != ne->version); 450e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 45112f9ef37SYunlei He if (e != new) 45212f9ef37SYunlei He __free_nat_entry(new); 453e05df3b1SJaegeuk Kim } 454e05df3b1SJaegeuk Kim 455e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 456479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 457e05df3b1SJaegeuk Kim { 458e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 459e05df3b1SJaegeuk Kim struct nat_entry *e; 46032410577SChao Yu struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true); 4619be32d72SJaegeuk Kim 462e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 463e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 464e05df3b1SJaegeuk Kim if (!e) { 46512f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4665c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4679850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 468e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 469e05df3b1SJaegeuk Kim /* 470e05df3b1SJaegeuk Kim * when nid is reallocated, 471e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 472e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 473e05df3b1SJaegeuk Kim */ 4745c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4759850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 476e05df3b1SJaegeuk Kim } 47712f9ef37SYunlei He /* let's free early to reduce memory consumption */ 47812f9ef37SYunlei He if (e != new) 47912f9ef37SYunlei He __free_nat_entry(new); 480e05df3b1SJaegeuk Kim 481e05df3b1SJaegeuk Kim /* sanity check */ 4829850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4839850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 484e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4859850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 486e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 48793770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 488e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 489e05df3b1SJaegeuk Kim 490e1c42045Sarter97 /* increment version no as node is removed */ 491e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 492e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 4935f029c04SYi Zhuang 494e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 495e05df3b1SJaegeuk Kim } 496e05df3b1SJaegeuk Kim 497e05df3b1SJaegeuk Kim /* change address */ 498e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 49993770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 50088bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 501e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 502479f40c4SJaegeuk Kim 503479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 504d5b692b7SChao Yu if (ni->nid != ni->ino) 505479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 50688bd02c9SJaegeuk Kim if (e) { 50788bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 50888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 50988bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 51088bd02c9SJaegeuk Kim } 511e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 512e05df3b1SJaegeuk Kim } 513e05df3b1SJaegeuk Kim 5144d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 515e05df3b1SJaegeuk Kim { 516e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 5171b38dc8eSJaegeuk Kim int nr = nr_shrink; 518e05df3b1SJaegeuk Kim 519e4544b63STim Murray if (!f2fs_down_write_trylock(&nm_i->nat_tree_lock)) 520b873b798SJaegeuk Kim return 0; 521e05df3b1SJaegeuk Kim 52222969158SChao Yu spin_lock(&nm_i->nat_list_lock); 52322969158SChao Yu while (nr_shrink) { 524e05df3b1SJaegeuk Kim struct nat_entry *ne; 52522969158SChao Yu 52622969158SChao Yu if (list_empty(&nm_i->nat_entries)) 52722969158SChao Yu break; 52822969158SChao Yu 529e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 530e05df3b1SJaegeuk Kim struct nat_entry, list); 53122969158SChao Yu list_del(&ne->list); 53222969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53322969158SChao Yu 534e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 535e05df3b1SJaegeuk Kim nr_shrink--; 53622969158SChao Yu 53722969158SChao Yu spin_lock(&nm_i->nat_list_lock); 538e05df3b1SJaegeuk Kim } 53922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 54022969158SChao Yu 541e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 5421b38dc8eSJaegeuk Kim return nr - nr_shrink; 543e05df3b1SJaegeuk Kim } 544e05df3b1SJaegeuk Kim 5457735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 546a9419b63SJaegeuk Kim struct node_info *ni, bool checkpoint_context) 547e05df3b1SJaegeuk Kim { 548e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 549e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 550b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 551e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 552e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 553e05df3b1SJaegeuk Kim struct page *page = NULL; 554e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 555e05df3b1SJaegeuk Kim struct nat_entry *e; 55666a82d1fSYunlei He pgoff_t index; 55793770ab7SChao Yu block_t blkaddr; 558e05df3b1SJaegeuk Kim int i; 559e05df3b1SJaegeuk Kim 560e05df3b1SJaegeuk Kim ni->nid = nid; 5612eeb0dceSJaegeuk Kim retry: 562e05df3b1SJaegeuk Kim /* Check nat cache */ 563e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 564e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 565e05df3b1SJaegeuk Kim if (e) { 566e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 567e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 568e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 569e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5707735730dSChao Yu return 0; 5711515aef0SChao Yu } 572e05df3b1SJaegeuk Kim 5732eeb0dceSJaegeuk Kim /* 5742eeb0dceSJaegeuk Kim * Check current segment summary by trying to grab journal_rwsem first. 5752eeb0dceSJaegeuk Kim * This sem is on the critical path on the checkpoint requiring the above 5762eeb0dceSJaegeuk Kim * nat_tree_lock. Therefore, we should retry, if we failed to grab here 5772eeb0dceSJaegeuk Kim * while not bothering checkpoint. 5782eeb0dceSJaegeuk Kim */ 579e4544b63STim Murray if (!f2fs_rwsem_is_locked(&sbi->cp_global_sem) || checkpoint_context) { 580b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 581e4544b63STim Murray } else if (f2fs_rwsem_is_contended(&nm_i->nat_tree_lock) || 582a9419b63SJaegeuk Kim !down_read_trylock(&curseg->journal_rwsem)) { 583e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5842eeb0dceSJaegeuk Kim goto retry; 5852eeb0dceSJaegeuk Kim } 5862eeb0dceSJaegeuk Kim 5874d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 588e05df3b1SJaegeuk Kim if (i >= 0) { 589dfc08a12SChao Yu ne = nat_in_journal(journal, i); 590e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 591e05df3b1SJaegeuk Kim } 592b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 59366a82d1fSYunlei He if (i >= 0) { 594e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 595e05df3b1SJaegeuk Kim goto cache; 59666a82d1fSYunlei He } 597e05df3b1SJaegeuk Kim 598e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 59966a82d1fSYunlei He index = current_nat_addr(sbi, nid); 600e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 60166a82d1fSYunlei He 6024d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 6037735730dSChao Yu if (IS_ERR(page)) 6047735730dSChao Yu return PTR_ERR(page); 6057735730dSChao Yu 606e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 607e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 608e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 609e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 610e05df3b1SJaegeuk Kim cache: 61193770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 61293770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 61393770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 61493770ab7SChao Yu return -EFAULT; 61593770ab7SChao Yu 616e05df3b1SJaegeuk Kim /* cache nat entry */ 6171515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 6187735730dSChao Yu return 0; 619e05df3b1SJaegeuk Kim } 620e05df3b1SJaegeuk Kim 62179344efbSJaegeuk Kim /* 62279344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 62379344efbSJaegeuk Kim */ 6244d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 62579344efbSJaegeuk Kim { 62679344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 62779344efbSJaegeuk Kim struct blk_plug plug; 62879344efbSJaegeuk Kim int i, end; 62979344efbSJaegeuk Kim nid_t nid; 63079344efbSJaegeuk Kim 63179344efbSJaegeuk Kim blk_start_plug(&plug); 63279344efbSJaegeuk Kim 63379344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 63479344efbSJaegeuk Kim end = start + n; 63579344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 63679344efbSJaegeuk Kim for (i = start; i < end; i++) { 63779344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6384d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 63979344efbSJaegeuk Kim } 64079344efbSJaegeuk Kim 64179344efbSJaegeuk Kim blk_finish_plug(&plug); 64279344efbSJaegeuk Kim } 64379344efbSJaegeuk Kim 6444d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6453cf45747SChao Yu { 6463cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 647d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 648d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 649d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6503cf45747SChao Yu int cur_level = dn->cur_level; 6513cf45747SChao Yu int max_level = dn->max_level; 6523cf45747SChao Yu pgoff_t base = 0; 6533cf45747SChao Yu 6543cf45747SChao Yu if (!dn->max_level) 6553cf45747SChao Yu return pgofs + 1; 6563cf45747SChao Yu 6573cf45747SChao Yu while (max_level-- > cur_level) 6583cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6593cf45747SChao Yu 6603cf45747SChao Yu switch (dn->max_level) { 6613cf45747SChao Yu case 3: 6623cf45747SChao Yu base += 2 * indirect_blks; 663df561f66SGustavo A. R. Silva fallthrough; 6643cf45747SChao Yu case 2: 6653cf45747SChao Yu base += 2 * direct_blks; 666df561f66SGustavo A. R. Silva fallthrough; 6673cf45747SChao Yu case 1: 6683cf45747SChao Yu base += direct_index; 6693cf45747SChao Yu break; 6703cf45747SChao Yu default: 6713cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6723cf45747SChao Yu } 6733cf45747SChao Yu 6743cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6753cf45747SChao Yu } 6763cf45747SChao Yu 6770a8165d7SJaegeuk Kim /* 678e05df3b1SJaegeuk Kim * The maximum depth is four. 679e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 680e05df3b1SJaegeuk Kim */ 68181ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 682de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 683e05df3b1SJaegeuk Kim { 68481ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 685d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 686e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 687d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 688e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 689e05df3b1SJaegeuk Kim int n = 0; 690e05df3b1SJaegeuk Kim int level = 0; 691e05df3b1SJaegeuk Kim 692e05df3b1SJaegeuk Kim noffset[0] = 0; 693e05df3b1SJaegeuk Kim 694e05df3b1SJaegeuk Kim if (block < direct_index) { 69525c0a6e5SNamjae Jeon offset[n] = block; 696e05df3b1SJaegeuk Kim goto got; 697e05df3b1SJaegeuk Kim } 698e05df3b1SJaegeuk Kim block -= direct_index; 699e05df3b1SJaegeuk Kim if (block < direct_blks) { 700e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 701e05df3b1SJaegeuk Kim noffset[n] = 1; 70225c0a6e5SNamjae Jeon offset[n] = block; 703e05df3b1SJaegeuk Kim level = 1; 704e05df3b1SJaegeuk Kim goto got; 705e05df3b1SJaegeuk Kim } 706e05df3b1SJaegeuk Kim block -= direct_blks; 707e05df3b1SJaegeuk Kim if (block < direct_blks) { 708e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 709e05df3b1SJaegeuk Kim noffset[n] = 2; 71025c0a6e5SNamjae Jeon offset[n] = block; 711e05df3b1SJaegeuk Kim level = 1; 712e05df3b1SJaegeuk Kim goto got; 713e05df3b1SJaegeuk Kim } 714e05df3b1SJaegeuk Kim block -= direct_blks; 715e05df3b1SJaegeuk Kim if (block < indirect_blks) { 716e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 717e05df3b1SJaegeuk Kim noffset[n] = 3; 718e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 719e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 72025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 721e05df3b1SJaegeuk Kim level = 2; 722e05df3b1SJaegeuk Kim goto got; 723e05df3b1SJaegeuk Kim } 724e05df3b1SJaegeuk Kim block -= indirect_blks; 725e05df3b1SJaegeuk Kim if (block < indirect_blks) { 726e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 727e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 728e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 729e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 73025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 731e05df3b1SJaegeuk Kim level = 2; 732e05df3b1SJaegeuk Kim goto got; 733e05df3b1SJaegeuk Kim } 734e05df3b1SJaegeuk Kim block -= indirect_blks; 735e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 736e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 737e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 738e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 739e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 740e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 741e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 742e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 743e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 744e05df3b1SJaegeuk Kim offset[n - 1]; 74525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 746e05df3b1SJaegeuk Kim level = 3; 747e05df3b1SJaegeuk Kim goto got; 748e05df3b1SJaegeuk Kim } else { 749adb6dc19SJaegeuk Kim return -E2BIG; 750e05df3b1SJaegeuk Kim } 751e05df3b1SJaegeuk Kim got: 752e05df3b1SJaegeuk Kim return level; 753e05df3b1SJaegeuk Kim } 754e05df3b1SJaegeuk Kim 755e05df3b1SJaegeuk Kim /* 756e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7574f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7587a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 759e05df3b1SJaegeuk Kim */ 7604d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 761e05df3b1SJaegeuk Kim { 7624081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 763e05df3b1SJaegeuk Kim struct page *npage[4]; 764f1a3b98eSJaegeuk Kim struct page *parent = NULL; 765e05df3b1SJaegeuk Kim int offset[4]; 766e05df3b1SJaegeuk Kim unsigned int noffset[4]; 767e05df3b1SJaegeuk Kim nid_t nids[4]; 7683cf45747SChao Yu int level, i = 0; 769e05df3b1SJaegeuk Kim int err = 0; 770e05df3b1SJaegeuk Kim 77181ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 772adb6dc19SJaegeuk Kim if (level < 0) 773adb6dc19SJaegeuk Kim return level; 774e05df3b1SJaegeuk Kim 775e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7761646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7771646cfacSJaegeuk Kim 7781646cfacSJaegeuk Kim if (!npage[0]) { 7794d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 780e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 781e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7821646cfacSJaegeuk Kim } 783f1a3b98eSJaegeuk Kim 784f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 785f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 78676629165SJaegeuk Kim err = -ENOENT; 787f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 788f1a3b98eSJaegeuk Kim goto release_out; 789f1a3b98eSJaegeuk Kim } 790f1a3b98eSJaegeuk Kim 791e05df3b1SJaegeuk Kim parent = npage[0]; 79252c2db3fSChangman Lee if (level != 0) 793e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 794e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 795e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 796e05df3b1SJaegeuk Kim 797e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 798e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 799e05df3b1SJaegeuk Kim bool done = false; 800e05df3b1SJaegeuk Kim 801266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 802e05df3b1SJaegeuk Kim /* alloc new node */ 8034d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 804e05df3b1SJaegeuk Kim err = -ENOSPC; 805e05df3b1SJaegeuk Kim goto release_pages; 806e05df3b1SJaegeuk Kim } 807e05df3b1SJaegeuk Kim 808e05df3b1SJaegeuk Kim dn->nid = nids[i]; 8094d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 810e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 8114d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 812e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 813e05df3b1SJaegeuk Kim goto release_pages; 814e05df3b1SJaegeuk Kim } 815e05df3b1SJaegeuk Kim 816e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 8174d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 818e05df3b1SJaegeuk Kim done = true; 819266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 8204d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 821e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 822e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 823e05df3b1SJaegeuk Kim goto release_pages; 824e05df3b1SJaegeuk Kim } 825e05df3b1SJaegeuk Kim done = true; 826e05df3b1SJaegeuk Kim } 827e05df3b1SJaegeuk Kim if (i == 1) { 828e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 829e05df3b1SJaegeuk Kim unlock_page(parent); 830e05df3b1SJaegeuk Kim } else { 831e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 832e05df3b1SJaegeuk Kim } 833e05df3b1SJaegeuk Kim 834e05df3b1SJaegeuk Kim if (!done) { 8354d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 836e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 837e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 838e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 839e05df3b1SJaegeuk Kim goto release_out; 840e05df3b1SJaegeuk Kim } 841e05df3b1SJaegeuk Kim } 842e05df3b1SJaegeuk Kim if (i < level) { 843e05df3b1SJaegeuk Kim parent = npage[i]; 844e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 845e05df3b1SJaegeuk Kim } 846e05df3b1SJaegeuk Kim } 847e05df3b1SJaegeuk Kim dn->nid = nids[level]; 848e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 849e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 850a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 85194afd6d6SChao Yu 85294afd6d6SChao Yu if (is_inode_flag_set(dn->inode, FI_COMPRESSED_FILE) && 85394afd6d6SChao Yu f2fs_sb_has_readonly(sbi)) { 85494afd6d6SChao Yu unsigned int c_len = f2fs_cluster_blocks_are_contiguous(dn); 85594afd6d6SChao Yu block_t blkaddr; 85694afd6d6SChao Yu 85794afd6d6SChao Yu if (!c_len) 85894afd6d6SChao Yu goto out; 85994afd6d6SChao Yu 86094afd6d6SChao Yu blkaddr = f2fs_data_blkaddr(dn); 86194afd6d6SChao Yu if (blkaddr == COMPRESS_ADDR) 86294afd6d6SChao Yu blkaddr = data_blkaddr(dn->inode, dn->node_page, 86394afd6d6SChao Yu dn->ofs_in_node + 1); 86494afd6d6SChao Yu 86594afd6d6SChao Yu f2fs_update_extent_tree_range_compressed(dn->inode, 86694afd6d6SChao Yu index, blkaddr, 86794afd6d6SChao Yu F2FS_I(dn->inode)->i_cluster_size, 86894afd6d6SChao Yu c_len); 86994afd6d6SChao Yu } 87094afd6d6SChao Yu out: 871e05df3b1SJaegeuk Kim return 0; 872e05df3b1SJaegeuk Kim 873e05df3b1SJaegeuk Kim release_pages: 874e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 875e05df3b1SJaegeuk Kim if (i > 1) 876e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 877e05df3b1SJaegeuk Kim release_out: 878e05df3b1SJaegeuk Kim dn->inode_page = NULL; 879e05df3b1SJaegeuk Kim dn->node_page = NULL; 8803cf45747SChao Yu if (err == -ENOENT) { 8813cf45747SChao Yu dn->cur_level = i; 8823cf45747SChao Yu dn->max_level = level; 8830a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8843cf45747SChao Yu } 885e05df3b1SJaegeuk Kim return err; 886e05df3b1SJaegeuk Kim } 887e05df3b1SJaegeuk Kim 8887735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 889e05df3b1SJaegeuk Kim { 8904081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 891e05df3b1SJaegeuk Kim struct node_info ni; 8927735730dSChao Yu int err; 8930ea295ddSPan Bian pgoff_t index; 894e05df3b1SJaegeuk Kim 895a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &ni, false); 8967735730dSChao Yu if (err) 8977735730dSChao Yu return err; 898e05df3b1SJaegeuk Kim 899e05df3b1SJaegeuk Kim /* Deallocate node address */ 9004d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 901000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 902479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 903e05df3b1SJaegeuk Kim 904e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 9054d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 906e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 9070f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 908e05df3b1SJaegeuk Kim } 909000519f2SChao Yu 910e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 911caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 912e05df3b1SJaegeuk Kim 9130ea295ddSPan Bian index = dn->node_page->index; 914e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 915bf39c00aSJaegeuk Kim 916bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 9170ea295ddSPan Bian index, index); 918bf39c00aSJaegeuk Kim 919e05df3b1SJaegeuk Kim dn->node_page = NULL; 92051dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 9217735730dSChao Yu 9227735730dSChao Yu return 0; 923e05df3b1SJaegeuk Kim } 924e05df3b1SJaegeuk Kim 925e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 926e05df3b1SJaegeuk Kim { 927e05df3b1SJaegeuk Kim struct page *page; 9287735730dSChao Yu int err; 929e05df3b1SJaegeuk Kim 930e05df3b1SJaegeuk Kim if (dn->nid == 0) 931e05df3b1SJaegeuk Kim return 1; 932e05df3b1SJaegeuk Kim 933e05df3b1SJaegeuk Kim /* get direct node */ 9344d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 93545586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 936e05df3b1SJaegeuk Kim return 1; 937e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 938e05df3b1SJaegeuk Kim return PTR_ERR(page); 939e05df3b1SJaegeuk Kim 940e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 941e05df3b1SJaegeuk Kim dn->node_page = page; 942e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 9434d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 9447735730dSChao Yu err = truncate_node(dn); 9457735730dSChao Yu if (err) 9467735730dSChao Yu return err; 9477735730dSChao Yu 948e05df3b1SJaegeuk Kim return 1; 949e05df3b1SJaegeuk Kim } 950e05df3b1SJaegeuk Kim 951e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 952e05df3b1SJaegeuk Kim int ofs, int depth) 953e05df3b1SJaegeuk Kim { 954e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 955e05df3b1SJaegeuk Kim struct page *page; 956e05df3b1SJaegeuk Kim struct f2fs_node *rn; 957e05df3b1SJaegeuk Kim nid_t child_nid; 958e05df3b1SJaegeuk Kim unsigned int child_nofs; 959e05df3b1SJaegeuk Kim int freed = 0; 960e05df3b1SJaegeuk Kim int i, ret; 961e05df3b1SJaegeuk Kim 962e05df3b1SJaegeuk Kim if (dn->nid == 0) 963e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 964e05df3b1SJaegeuk Kim 96551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 96651dd6249SNamjae Jeon 9674d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 96851dd6249SNamjae Jeon if (IS_ERR(page)) { 96951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 970e05df3b1SJaegeuk Kim return PTR_ERR(page); 97151dd6249SNamjae Jeon } 972e05df3b1SJaegeuk Kim 9734d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 97479344efbSJaegeuk Kim 97545590710SGu Zheng rn = F2FS_NODE(page); 976e05df3b1SJaegeuk Kim if (depth < 3) { 977e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 978e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 979e05df3b1SJaegeuk Kim if (child_nid == 0) 980e05df3b1SJaegeuk Kim continue; 981e05df3b1SJaegeuk Kim rdn.nid = child_nid; 982e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 983e05df3b1SJaegeuk Kim if (ret < 0) 984e05df3b1SJaegeuk Kim goto out_err; 98512719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 98693bae099SJaegeuk Kim dn->node_changed = true; 987e05df3b1SJaegeuk Kim } 988e05df3b1SJaegeuk Kim } else { 989e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 990e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 991e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 992e05df3b1SJaegeuk Kim if (child_nid == 0) { 993e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 994e05df3b1SJaegeuk Kim continue; 995e05df3b1SJaegeuk Kim } 996e05df3b1SJaegeuk Kim rdn.nid = child_nid; 997e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 998e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 99912719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 100093bae099SJaegeuk Kim dn->node_changed = true; 1001e05df3b1SJaegeuk Kim child_nofs += ret; 1002e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 1003e05df3b1SJaegeuk Kim goto out_err; 1004e05df3b1SJaegeuk Kim } 1005e05df3b1SJaegeuk Kim } 1006e05df3b1SJaegeuk Kim freed = child_nofs; 1007e05df3b1SJaegeuk Kim } 1008e05df3b1SJaegeuk Kim 1009e05df3b1SJaegeuk Kim if (!ofs) { 1010e05df3b1SJaegeuk Kim /* remove current indirect node */ 1011e05df3b1SJaegeuk Kim dn->node_page = page; 10127735730dSChao Yu ret = truncate_node(dn); 10137735730dSChao Yu if (ret) 10147735730dSChao Yu goto out_err; 1015e05df3b1SJaegeuk Kim freed++; 1016e05df3b1SJaegeuk Kim } else { 1017e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1018e05df3b1SJaegeuk Kim } 101951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 1020e05df3b1SJaegeuk Kim return freed; 1021e05df3b1SJaegeuk Kim 1022e05df3b1SJaegeuk Kim out_err: 1023e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 102451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 1025e05df3b1SJaegeuk Kim return ret; 1026e05df3b1SJaegeuk Kim } 1027e05df3b1SJaegeuk Kim 1028e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 1029e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 1030e05df3b1SJaegeuk Kim { 1031e05df3b1SJaegeuk Kim struct page *pages[2]; 1032e05df3b1SJaegeuk Kim nid_t nid[3]; 1033e05df3b1SJaegeuk Kim nid_t child_nid; 1034e05df3b1SJaegeuk Kim int err = 0; 1035e05df3b1SJaegeuk Kim int i; 1036e05df3b1SJaegeuk Kim int idx = depth - 2; 1037e05df3b1SJaegeuk Kim 1038e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1039e05df3b1SJaegeuk Kim if (!nid[0]) 1040e05df3b1SJaegeuk Kim return 0; 1041e05df3b1SJaegeuk Kim 1042e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1043a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1044e1c42045Sarter97 /* reference count'll be increased */ 10454d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1046e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1047e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1048a225dca3Sshifei10.ge idx = i - 1; 1049e05df3b1SJaegeuk Kim goto fail; 1050e05df3b1SJaegeuk Kim } 1051e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1052e05df3b1SJaegeuk Kim } 1053e05df3b1SJaegeuk Kim 10544d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 105579344efbSJaegeuk Kim 1056e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1057a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1058e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1059e05df3b1SJaegeuk Kim if (!child_nid) 1060e05df3b1SJaegeuk Kim continue; 1061e05df3b1SJaegeuk Kim dn->nid = child_nid; 1062e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1063e05df3b1SJaegeuk Kim if (err < 0) 1064e05df3b1SJaegeuk Kim goto fail; 106512719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 106693bae099SJaegeuk Kim dn->node_changed = true; 1067e05df3b1SJaegeuk Kim } 1068e05df3b1SJaegeuk Kim 1069a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1070e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1071e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10727735730dSChao Yu err = truncate_node(dn); 10737735730dSChao Yu if (err) 10747735730dSChao Yu goto fail; 1075e05df3b1SJaegeuk Kim } else { 1076e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1077e05df3b1SJaegeuk Kim } 1078e05df3b1SJaegeuk Kim offset[idx]++; 1079a225dca3Sshifei10.ge offset[idx + 1] = 0; 1080a225dca3Sshifei10.ge idx--; 1081e05df3b1SJaegeuk Kim fail: 1082a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1083e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 108451dd6249SNamjae Jeon 108551dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 108651dd6249SNamjae Jeon 1087e05df3b1SJaegeuk Kim return err; 1088e05df3b1SJaegeuk Kim } 1089e05df3b1SJaegeuk Kim 10900a8165d7SJaegeuk Kim /* 1091e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1092e05df3b1SJaegeuk Kim */ 10934d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1094e05df3b1SJaegeuk Kim { 10954081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1096e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1097e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10987dd690c8SJaegeuk Kim unsigned int nofs = 0; 109958bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1100e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1101e05df3b1SJaegeuk Kim struct page *page; 1102e05df3b1SJaegeuk Kim 110351dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 110451dd6249SNamjae Jeon 110581ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 11069039d835SYubo Feng if (level < 0) { 11079039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1108adb6dc19SJaegeuk Kim return level; 11099039d835SYubo Feng } 1110ff373558SJaegeuk Kim 11114d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 111251dd6249SNamjae Jeon if (IS_ERR(page)) { 111351dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1114e05df3b1SJaegeuk Kim return PTR_ERR(page); 111551dd6249SNamjae Jeon } 1116e05df3b1SJaegeuk Kim 1117e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1118e05df3b1SJaegeuk Kim unlock_page(page); 1119e05df3b1SJaegeuk Kim 112058bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1121e05df3b1SJaegeuk Kim switch (level) { 1122e05df3b1SJaegeuk Kim case 0: 1123e05df3b1SJaegeuk Kim case 1: 1124e05df3b1SJaegeuk Kim nofs = noffset[1]; 1125e05df3b1SJaegeuk Kim break; 1126e05df3b1SJaegeuk Kim case 2: 1127e05df3b1SJaegeuk Kim nofs = noffset[1]; 1128e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1129e05df3b1SJaegeuk Kim goto skip_partial; 113058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1131e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1132e05df3b1SJaegeuk Kim goto fail; 1133e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1134e05df3b1SJaegeuk Kim break; 1135e05df3b1SJaegeuk Kim case 3: 1136e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1137e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1138e05df3b1SJaegeuk Kim goto skip_partial; 113958bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1140e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1141e05df3b1SJaegeuk Kim goto fail; 1142e05df3b1SJaegeuk Kim break; 1143e05df3b1SJaegeuk Kim default: 1144e05df3b1SJaegeuk Kim BUG(); 1145e05df3b1SJaegeuk Kim } 1146e05df3b1SJaegeuk Kim 1147e05df3b1SJaegeuk Kim skip_partial: 1148e05df3b1SJaegeuk Kim while (cont) { 114958bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1150e05df3b1SJaegeuk Kim switch (offset[0]) { 1151e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1152e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1153e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1154e05df3b1SJaegeuk Kim break; 1155e05df3b1SJaegeuk Kim 1156e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1157e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1158e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1159e05df3b1SJaegeuk Kim break; 1160e05df3b1SJaegeuk Kim 1161e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1162e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1163e05df3b1SJaegeuk Kim cont = 0; 1164e05df3b1SJaegeuk Kim break; 1165e05df3b1SJaegeuk Kim 1166e05df3b1SJaegeuk Kim default: 1167e05df3b1SJaegeuk Kim BUG(); 1168e05df3b1SJaegeuk Kim } 1169e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1170e05df3b1SJaegeuk Kim goto fail; 1171e05df3b1SJaegeuk Kim if (offset[1] == 0 && 117258bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1173e05df3b1SJaegeuk Kim lock_page(page); 1174ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1175bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 117658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1177e05df3b1SJaegeuk Kim set_page_dirty(page); 1178e05df3b1SJaegeuk Kim unlock_page(page); 1179e05df3b1SJaegeuk Kim } 1180e05df3b1SJaegeuk Kim offset[1] = 0; 1181e05df3b1SJaegeuk Kim offset[0]++; 1182e05df3b1SJaegeuk Kim nofs += err; 1183e05df3b1SJaegeuk Kim } 1184e05df3b1SJaegeuk Kim fail: 1185e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 118651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1187e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1188e05df3b1SJaegeuk Kim } 1189e05df3b1SJaegeuk Kim 11909c77f754SJaegeuk Kim /* caller must lock inode page */ 11914d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11924f16fb0fSJaegeuk Kim { 11934081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11944f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11954f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11964f16fb0fSJaegeuk Kim struct page *npage; 11977735730dSChao Yu int err; 11984f16fb0fSJaegeuk Kim 11994f16fb0fSJaegeuk Kim if (!nid) 12004f16fb0fSJaegeuk Kim return 0; 12014f16fb0fSJaegeuk Kim 12024d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 12034f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 12044f16fb0fSJaegeuk Kim return PTR_ERR(npage); 12054f16fb0fSJaegeuk Kim 12067735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 12077735730dSChao Yu err = truncate_node(&dn); 12087735730dSChao Yu if (err) { 12097735730dSChao Yu f2fs_put_page(npage, 1); 12107735730dSChao Yu return err; 12117735730dSChao Yu } 12127735730dSChao Yu 1213205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 121465985d93SJaegeuk Kim 12154f16fb0fSJaegeuk Kim return 0; 12164f16fb0fSJaegeuk Kim } 12174f16fb0fSJaegeuk Kim 121839936837SJaegeuk Kim /* 12194f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 12204f4124d0SChao Yu * f2fs_unlock_op(). 122139936837SJaegeuk Kim */ 12224d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1223e05df3b1SJaegeuk Kim { 1224e05df3b1SJaegeuk Kim struct dnode_of_data dn; 122513ec7297SChao Yu int err; 1226e05df3b1SJaegeuk Kim 1227c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 12284d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 122913ec7297SChao Yu if (err) 123013ec7297SChao Yu return err; 1231e05df3b1SJaegeuk Kim 12324d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 123313ec7297SChao Yu if (err) { 1234c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 123513ec7297SChao Yu return err; 1236e05df3b1SJaegeuk Kim } 1237c2e69583SJaegeuk Kim 1238c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1239c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1240c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12414d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1242c2e69583SJaegeuk Kim 1243e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12448d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12458d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12468d714f8aSJaegeuk Kim return -EIO; 12478d714f8aSJaegeuk Kim } 12488b6810f8SChao Yu 12498b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1250097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1251097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1252dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12538b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12548b6810f8SChao Yu } 1255c2e69583SJaegeuk Kim 1256c2e69583SJaegeuk Kim /* will put inode & node pages */ 12577735730dSChao Yu err = truncate_node(&dn); 12587735730dSChao Yu if (err) { 12597735730dSChao Yu f2fs_put_dnode(&dn); 12607735730dSChao Yu return err; 12617735730dSChao Yu } 126213ec7297SChao Yu return 0; 1263e05df3b1SJaegeuk Kim } 1264e05df3b1SJaegeuk Kim 12654d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1266e05df3b1SJaegeuk Kim { 1267e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1268e05df3b1SJaegeuk Kim 1269e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1270e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 127144a83ff6SJaegeuk Kim 127244a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12734d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1274e05df3b1SJaegeuk Kim } 1275e05df3b1SJaegeuk Kim 12764d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1277e05df3b1SJaegeuk Kim { 12784081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 127925cc5d3bSJaegeuk Kim struct node_info new_ni; 1280e05df3b1SJaegeuk Kim struct page *page; 1281e05df3b1SJaegeuk Kim int err; 1282e05df3b1SJaegeuk Kim 128391942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1284e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1285e05df3b1SJaegeuk Kim 1286300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1287e05df3b1SJaegeuk Kim if (!page) 1288e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1289e05df3b1SJaegeuk Kim 12900abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12919c02740cSJaegeuk Kim goto fail; 12920abd675eSChao Yu 129325cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 1294a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false); 12957735730dSChao Yu if (err) { 12967735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12977735730dSChao Yu goto fail; 12987735730dSChao Yu } 129925cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 130025cc5d3bSJaegeuk Kim #endif 130125cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1302e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 130325cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 130425cc5d3bSJaegeuk Kim new_ni.flag = 0; 130525cc5d3bSJaegeuk Kim new_ni.version = 0; 1306479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 13079c02740cSJaegeuk Kim 1308bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 13099c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1310c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1311237c0790SJaegeuk Kim if (!PageUptodate(page)) 13129c02740cSJaegeuk Kim SetPageUptodate(page); 131312719ae1SJaegeuk Kim if (set_page_dirty(page)) 131412719ae1SJaegeuk Kim dn->node_changed = true; 1315e05df3b1SJaegeuk Kim 13164bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1317205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1318479bd73aSJaegeuk Kim 1319e05df3b1SJaegeuk Kim if (ofs == 0) 1320e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1321e05df3b1SJaegeuk Kim return page; 1322e05df3b1SJaegeuk Kim 1323e05df3b1SJaegeuk Kim fail: 132471e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1325e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1326e05df3b1SJaegeuk Kim return ERR_PTR(err); 1327e05df3b1SJaegeuk Kim } 1328e05df3b1SJaegeuk Kim 132956ae674cSJaegeuk Kim /* 133056ae674cSJaegeuk Kim * Caller should do after getting the following values. 133156ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 133286531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 133356ae674cSJaegeuk Kim */ 133404d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1335e05df3b1SJaegeuk Kim { 13364081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1337e05df3b1SJaegeuk Kim struct node_info ni; 1338cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 133905ca3632SJaegeuk Kim .sbi = sbi, 1340cf04e8ebSJaegeuk Kim .type = NODE, 134104d328deSMike Christie .op = REQ_OP_READ, 134204d328deSMike Christie .op_flags = op_flags, 134305ca3632SJaegeuk Kim .page = page, 13444375a336SJaegeuk Kim .encrypted_page = NULL, 1345cf04e8ebSJaegeuk Kim }; 13467735730dSChao Yu int err; 1347e05df3b1SJaegeuk Kim 134854c55c4eSWeichao Guo if (PageUptodate(page)) { 1349b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1350b42b179bSChao Yu ClearPageUptodate(page); 135110f966bbSChao Yu return -EFSBADCRC; 1352b42b179bSChao Yu } 13533bdad3c7SJaegeuk Kim return LOCKED_PAGE; 135454c55c4eSWeichao Guo } 13553bdad3c7SJaegeuk Kim 1356a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, page->index, &ni, false); 13577735730dSChao Yu if (err) 13587735730dSChao Yu return err; 1359e05df3b1SJaegeuk Kim 1360b7ec2061SJaegeuk Kim /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */ 1361b7ec2061SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR) || 136283a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 13632bca1e23SJaegeuk Kim ClearPageUptodate(page); 1364e05df3b1SJaegeuk Kim return -ENOENT; 1365393ff91fSJaegeuk Kim } 1366393ff91fSJaegeuk Kim 13677a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13688b83ac81SChao Yu 13698b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13708b83ac81SChao Yu 13718b83ac81SChao Yu if (!err) 13728b83ac81SChao Yu f2fs_update_iostat(sbi, FS_NODE_READ_IO, F2FS_BLKSIZE); 13738b83ac81SChao Yu 13748b83ac81SChao Yu return err; 1375e05df3b1SJaegeuk Kim } 1376e05df3b1SJaegeuk Kim 13770a8165d7SJaegeuk Kim /* 1378e05df3b1SJaegeuk Kim * Readahead a node page 1379e05df3b1SJaegeuk Kim */ 13804d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1381e05df3b1SJaegeuk Kim { 1382e05df3b1SJaegeuk Kim struct page *apage; 138356ae674cSJaegeuk Kim int err; 1384e05df3b1SJaegeuk Kim 1385e8458725SChao Yu if (!nid) 1386e8458725SChao Yu return; 13874d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1388a4f843bdSJaegeuk Kim return; 1389e8458725SChao Yu 13905ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1391999270deSFan Li if (apage) 1392393ff91fSJaegeuk Kim return; 1393e05df3b1SJaegeuk Kim 1394300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1395e05df3b1SJaegeuk Kim if (!apage) 1396e05df3b1SJaegeuk Kim return; 1397e05df3b1SJaegeuk Kim 139870246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 139986531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1400e05df3b1SJaegeuk Kim } 1401e05df3b1SJaegeuk Kim 140217a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 14030e022ea8SChao Yu struct page *parent, int start) 1404e05df3b1SJaegeuk Kim { 140556ae674cSJaegeuk Kim struct page *page; 140656ae674cSJaegeuk Kim int err; 14074aa69d56SJaegeuk Kim 14084aa69d56SJaegeuk Kim if (!nid) 14094aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 14104d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1411a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1412afcb7ca0SJaegeuk Kim repeat: 1413300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1414e05df3b1SJaegeuk Kim if (!page) 1415e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1416e05df3b1SJaegeuk Kim 141770fd7614SChristoph Hellwig err = read_node_page(page, 0); 141886531d6bSJaegeuk Kim if (err < 0) { 1419*a7b8618aSJaegeuk Kim goto out_put_err; 1420e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 14211f258ec1SChao Yu err = 0; 1422e1c51b9fSChao Yu goto page_hit; 142386531d6bSJaegeuk Kim } 1424aaf96075SJaegeuk Kim 14250e022ea8SChao Yu if (parent) 14264d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 14270e022ea8SChao Yu 1428e1c51b9fSChao Yu lock_page(page); 1429e1c51b9fSChao Yu 14304ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1431afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1432afcb7ca0SJaegeuk Kim goto repeat; 1433afcb7ca0SJaegeuk Kim } 14341563ac75SChao Yu 14351f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14361f258ec1SChao Yu err = -EIO; 14371563ac75SChao Yu goto out_err; 14381f258ec1SChao Yu } 1439704956ecSChao Yu 1440704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 144110f966bbSChao Yu err = -EFSBADCRC; 1442704956ecSChao Yu goto out_err; 1443704956ecSChao Yu } 1444e1c51b9fSChao Yu page_hit: 1445*a7b8618aSJaegeuk Kim if (likely(nid == nid_of_node(page))) 1446*a7b8618aSJaegeuk Kim return page; 1447*a7b8618aSJaegeuk Kim 1448dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14491f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14501f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14511f258ec1SChao Yu next_blkaddr_of_node(page)); 14526663b138SWeichao Guo set_sbi_flag(sbi, SBI_NEED_FSCK); 14531f258ec1SChao Yu err = -EINVAL; 14540c9df7fbSYunlong Song out_err: 1455ee605234SJaegeuk Kim ClearPageUptodate(page); 1456*a7b8618aSJaegeuk Kim out_put_err: 1457*a7b8618aSJaegeuk Kim f2fs_handle_page_eio(sbi, page->index, NODE); 14580c9df7fbSYunlong Song f2fs_put_page(page, 1); 14591f258ec1SChao Yu return ERR_PTR(err); 14600c9df7fbSYunlong Song } 1461e05df3b1SJaegeuk Kim 14624d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14630e022ea8SChao Yu { 14640e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14650e022ea8SChao Yu } 14660e022ea8SChao Yu 14674d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1468e05df3b1SJaegeuk Kim { 14694081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14700e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1471e05df3b1SJaegeuk Kim 14720e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1473e05df3b1SJaegeuk Kim } 1474e05df3b1SJaegeuk Kim 14752049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14762049d4fcSJaegeuk Kim { 14772049d4fcSJaegeuk Kim struct inode *inode; 14782049d4fcSJaegeuk Kim struct page *page; 14790f3311a8SChao Yu int ret; 14802049d4fcSJaegeuk Kim 14812049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14822049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14832049d4fcSJaegeuk Kim if (!inode) 14842049d4fcSJaegeuk Kim return; 14852049d4fcSJaegeuk Kim 148601eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 148701eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14882049d4fcSJaegeuk Kim if (!page) 14892049d4fcSJaegeuk Kim goto iput_out; 14902049d4fcSJaegeuk Kim 14912049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14922049d4fcSJaegeuk Kim goto page_out; 14932049d4fcSJaegeuk Kim 14942049d4fcSJaegeuk Kim if (!PageDirty(page)) 14952049d4fcSJaegeuk Kim goto page_out; 14962049d4fcSJaegeuk Kim 14972049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14982049d4fcSJaegeuk Kim goto page_out; 14992049d4fcSJaegeuk Kim 15000f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 15012049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 15024d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 15030f3311a8SChao Yu if (ret) 15042049d4fcSJaegeuk Kim set_page_dirty(page); 15052049d4fcSJaegeuk Kim page_out: 15064a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 15072049d4fcSJaegeuk Kim iput_out: 15082049d4fcSJaegeuk Kim iput(inode); 15092049d4fcSJaegeuk Kim } 15102049d4fcSJaegeuk Kim 1511608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1512e05df3b1SJaegeuk Kim { 1513028a63a6SJan Kara pgoff_t index; 1514e05df3b1SJaegeuk Kim struct pagevec pvec; 1515608514deSJaegeuk Kim struct page *last_page = NULL; 1516028a63a6SJan Kara int nr_pages; 151752681375SJaegeuk Kim 151886679820SMel Gorman pagevec_init(&pvec); 151952681375SJaegeuk Kim index = 0; 152052681375SJaegeuk Kim 1521028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 152267fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1523028a63a6SJan Kara int i; 152452681375SJaegeuk Kim 152552681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 152652681375SJaegeuk Kim struct page *page = pvec.pages[i]; 152752681375SJaegeuk Kim 152852681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1529608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 153052681375SJaegeuk Kim pagevec_release(&pvec); 1531608514deSJaegeuk Kim return ERR_PTR(-EIO); 153252681375SJaegeuk Kim } 153352681375SJaegeuk Kim 153452681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 153552681375SJaegeuk Kim continue; 153652681375SJaegeuk Kim if (ino_of_node(page) != ino) 153752681375SJaegeuk Kim continue; 153852681375SJaegeuk Kim 153952681375SJaegeuk Kim lock_page(page); 154052681375SJaegeuk Kim 154152681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 154252681375SJaegeuk Kim continue_unlock: 154352681375SJaegeuk Kim unlock_page(page); 154452681375SJaegeuk Kim continue; 154552681375SJaegeuk Kim } 154652681375SJaegeuk Kim if (ino_of_node(page) != ino) 154752681375SJaegeuk Kim goto continue_unlock; 154852681375SJaegeuk Kim 154952681375SJaegeuk Kim if (!PageDirty(page)) { 155052681375SJaegeuk Kim /* someone wrote it for us */ 155152681375SJaegeuk Kim goto continue_unlock; 155252681375SJaegeuk Kim } 155352681375SJaegeuk Kim 1554608514deSJaegeuk Kim if (last_page) 1555608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1556608514deSJaegeuk Kim 1557608514deSJaegeuk Kim get_page(page); 1558608514deSJaegeuk Kim last_page = page; 1559608514deSJaegeuk Kim unlock_page(page); 1560608514deSJaegeuk Kim } 1561608514deSJaegeuk Kim pagevec_release(&pvec); 1562608514deSJaegeuk Kim cond_resched(); 1563608514deSJaegeuk Kim } 1564608514deSJaegeuk Kim return last_page; 1565608514deSJaegeuk Kim } 1566608514deSJaegeuk Kim 1567d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1568b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 156950fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1570faa24895SJaegeuk Kim { 1571faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1572faa24895SJaegeuk Kim nid_t nid; 1573faa24895SJaegeuk Kim struct node_info ni; 1574faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1575faa24895SJaegeuk Kim .sbi = sbi, 157639d787beSChao Yu .ino = ino_of_node(page), 1577faa24895SJaegeuk Kim .type = NODE, 1578faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1579faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1580faa24895SJaegeuk Kim .page = page, 1581faa24895SJaegeuk Kim .encrypted_page = NULL, 1582d68f735bSJaegeuk Kim .submitted = false, 1583b0af6d49SChao Yu .io_type = io_type, 1584578c6478SYufen Yu .io_wbc = wbc, 1585faa24895SJaegeuk Kim }; 158650fa53ecSChao Yu unsigned int seq; 1587faa24895SJaegeuk Kim 1588faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1589faa24895SJaegeuk Kim 15906d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 15916d7c865cSJaegeuk Kim ClearPageUptodate(page); 15926d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 15936d7c865cSJaegeuk Kim unlock_page(page); 15946d7c865cSJaegeuk Kim return 0; 15956d7c865cSJaegeuk Kim } 1596db198ae0SChao Yu 1597faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1598faa24895SJaegeuk Kim goto redirty_out; 1599faa24895SJaegeuk Kim 1600100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1601100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1602fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1603fd8c8cafSChao Yu goto redirty_out; 1604fd8c8cafSChao Yu 1605faa24895SJaegeuk Kim /* get old block addr of this node page */ 1606faa24895SJaegeuk Kim nid = nid_of_node(page); 1607faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1608faa24895SJaegeuk Kim 1609a9419b63SJaegeuk Kim if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) 16107735730dSChao Yu goto redirty_out; 16117735730dSChao Yu 1612faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1613e4544b63STim Murray if (!f2fs_down_read_trylock(&sbi->node_write)) 1614faa24895SJaegeuk Kim goto redirty_out; 1615faa24895SJaegeuk Kim } else { 1616e4544b63STim Murray f2fs_down_read(&sbi->node_write); 1617faa24895SJaegeuk Kim } 1618faa24895SJaegeuk Kim 1619faa24895SJaegeuk Kim /* This page is already truncated */ 1620faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1621faa24895SJaegeuk Kim ClearPageUptodate(page); 1622faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1623e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1624faa24895SJaegeuk Kim unlock_page(page); 1625faa24895SJaegeuk Kim return 0; 1626faa24895SJaegeuk Kim } 1627faa24895SJaegeuk Kim 1628c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 162993770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 163093770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 1631e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1632c9b60788SChao Yu goto redirty_out; 163389d13c38SJaegeuk Kim } 1634c9b60788SChao Yu 1635c550e25bSJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi)) 1636e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1637e7c75ab0SJaegeuk Kim 1638dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 163950fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 164050fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 164150fa53ecSChao Yu if (seq_id) 164250fa53ecSChao Yu *seq_id = seq; 164350fa53ecSChao Yu } 164450fa53ecSChao Yu 1645dc5a9412SChao Yu set_page_writeback(page); 1646dc5a9412SChao Yu ClearPageError(page); 1647dc5a9412SChao Yu 1648faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16494d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1650faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1651faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1652e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1653faa24895SJaegeuk Kim 1654d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1655bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1656d68f735bSJaegeuk Kim submitted = NULL; 1657d68f735bSJaegeuk Kim } 1658faa24895SJaegeuk Kim 1659faa24895SJaegeuk Kim unlock_page(page); 1660faa24895SJaegeuk Kim 1661d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1662b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1663d68f735bSJaegeuk Kim submitted = NULL; 1664d68f735bSJaegeuk Kim } 1665d68f735bSJaegeuk Kim if (submitted) 1666d68f735bSJaegeuk Kim *submitted = fio.submitted; 1667faa24895SJaegeuk Kim 1668401db79fSYunlong Song if (do_balance) 1669401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1670faa24895SJaegeuk Kim return 0; 1671faa24895SJaegeuk Kim 1672faa24895SJaegeuk Kim redirty_out: 1673faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1674faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1675faa24895SJaegeuk Kim } 1676faa24895SJaegeuk Kim 167748018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1678f15194fcSYunlei He { 167948018b4cSChao Yu int err = 0; 168048018b4cSChao Yu 1681f15194fcSYunlei He if (gc_type == FG_GC) { 1682f15194fcSYunlei He struct writeback_control wbc = { 1683f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1684f15194fcSYunlei He .nr_to_write = 1, 1685f15194fcSYunlei He .for_reclaim = 0, 1686f15194fcSYunlei He }; 1687f15194fcSYunlei He 1688bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16898d64d365SChao Yu 16908d64d365SChao Yu set_page_dirty(node_page); 16918d64d365SChao Yu 169248018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 169348018b4cSChao Yu err = -EAGAIN; 1694f15194fcSYunlei He goto out_page; 169548018b4cSChao Yu } 1696f15194fcSYunlei He 1697f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 169848018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 169948018b4cSChao Yu err = -EAGAIN; 1700f15194fcSYunlei He unlock_page(node_page); 170148018b4cSChao Yu } 1702f15194fcSYunlei He goto release_page; 1703f15194fcSYunlei He } else { 1704f15194fcSYunlei He /* set page dirty and write it */ 1705f15194fcSYunlei He if (!PageWriteback(node_page)) 1706f15194fcSYunlei He set_page_dirty(node_page); 1707f15194fcSYunlei He } 1708f15194fcSYunlei He out_page: 1709f15194fcSYunlei He unlock_page(node_page); 1710f15194fcSYunlei He release_page: 1711f15194fcSYunlei He f2fs_put_page(node_page, 0); 171248018b4cSChao Yu return err; 1713f15194fcSYunlei He } 1714f15194fcSYunlei He 1715faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1716faa24895SJaegeuk Kim struct writeback_control *wbc) 1717faa24895SJaegeuk Kim { 171850fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 171950fa53ecSChao Yu FS_NODE_IO, NULL); 1720faa24895SJaegeuk Kim } 1721faa24895SJaegeuk Kim 17224d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 172350fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 172450fa53ecSChao Yu unsigned int *seq_id) 1725608514deSJaegeuk Kim { 1726028a63a6SJan Kara pgoff_t index; 1727608514deSJaegeuk Kim struct pagevec pvec; 1728608514deSJaegeuk Kim int ret = 0; 1729608514deSJaegeuk Kim struct page *last_page = NULL; 1730608514deSJaegeuk Kim bool marked = false; 173126de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1732028a63a6SJan Kara int nr_pages; 1733bab475c5SChao Yu int nwritten = 0; 1734608514deSJaegeuk Kim 1735608514deSJaegeuk Kim if (atomic) { 1736608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1737608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1738608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1739608514deSJaegeuk Kim } 1740608514deSJaegeuk Kim retry: 174186679820SMel Gorman pagevec_init(&pvec); 1742608514deSJaegeuk Kim index = 0; 1743608514deSJaegeuk Kim 1744028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 174567fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1746028a63a6SJan Kara int i; 1747608514deSJaegeuk Kim 1748608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1749608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1750d68f735bSJaegeuk Kim bool submitted = false; 1751608514deSJaegeuk Kim 1752608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1753608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1754608514deSJaegeuk Kim pagevec_release(&pvec); 17559de69279SChao Yu ret = -EIO; 17569de69279SChao Yu goto out; 1757608514deSJaegeuk Kim } 1758608514deSJaegeuk Kim 1759608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1760608514deSJaegeuk Kim continue; 1761608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1762608514deSJaegeuk Kim continue; 1763608514deSJaegeuk Kim 1764608514deSJaegeuk Kim lock_page(page); 1765608514deSJaegeuk Kim 1766608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1767608514deSJaegeuk Kim continue_unlock: 1768608514deSJaegeuk Kim unlock_page(page); 1769608514deSJaegeuk Kim continue; 1770608514deSJaegeuk Kim } 1771608514deSJaegeuk Kim if (ino_of_node(page) != ino) 177252681375SJaegeuk Kim goto continue_unlock; 177352681375SJaegeuk Kim 1774608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1775608514deSJaegeuk Kim /* someone wrote it for us */ 1776608514deSJaegeuk Kim goto continue_unlock; 1777608514deSJaegeuk Kim } 1778608514deSJaegeuk Kim 1779bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1780608514deSJaegeuk Kim 1781d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1782d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1783d29fd172SJaegeuk Kim 1784608514deSJaegeuk Kim if (!atomic || page == last_page) { 178552681375SJaegeuk Kim set_fsync_mark(page, 1); 178647c8ebccSJaegeuk Kim percpu_counter_inc(&sbi->rf_node_block_count); 178726de9b11SJaegeuk Kim if (IS_INODE(page)) { 178826de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 178926de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17904d57b86dSChao Yu f2fs_update_inode(inode, page); 179152681375SJaegeuk Kim set_dentry_mark(page, 17924d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 179326de9b11SJaegeuk Kim } 1794608514deSJaegeuk Kim /* may be written by other thread */ 1795608514deSJaegeuk Kim if (!PageDirty(page)) 1796608514deSJaegeuk Kim set_page_dirty(page); 1797608514deSJaegeuk Kim } 1798608514deSJaegeuk Kim 1799608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1800608514deSJaegeuk Kim goto continue_unlock; 180152681375SJaegeuk Kim 1802e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1803d68f735bSJaegeuk Kim page == last_page, 1804b0af6d49SChao Yu &submitted, wbc, true, 180550fa53ecSChao Yu FS_NODE_IO, seq_id); 1806c267ec15SJaegeuk Kim if (ret) { 180752681375SJaegeuk Kim unlock_page(page); 1808608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1809608514deSJaegeuk Kim break; 1810d68f735bSJaegeuk Kim } else if (submitted) { 1811bab475c5SChao Yu nwritten++; 1812608514deSJaegeuk Kim } 18133f5f4959SChao Yu 1814608514deSJaegeuk Kim if (page == last_page) { 1815608514deSJaegeuk Kim f2fs_put_page(page, 0); 1816608514deSJaegeuk Kim marked = true; 181752681375SJaegeuk Kim break; 181852681375SJaegeuk Kim } 1819c267ec15SJaegeuk Kim } 182052681375SJaegeuk Kim pagevec_release(&pvec); 182152681375SJaegeuk Kim cond_resched(); 182252681375SJaegeuk Kim 1823608514deSJaegeuk Kim if (ret || marked) 182452681375SJaegeuk Kim break; 182552681375SJaegeuk Kim } 1826608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1827dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1828608514deSJaegeuk Kim ino, last_page->index); 1829608514deSJaegeuk Kim lock_page(last_page); 1830bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1831608514deSJaegeuk Kim set_page_dirty(last_page); 1832608514deSJaegeuk Kim unlock_page(last_page); 1833608514deSJaegeuk Kim goto retry; 1834608514deSJaegeuk Kim } 18359de69279SChao Yu out: 1836bab475c5SChao Yu if (nwritten) 1837bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1838c267ec15SJaegeuk Kim return ret ? -EIO : 0; 183952681375SJaegeuk Kim } 184052681375SJaegeuk Kim 1841052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1842052a82d8SChao Yu { 1843052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1844052a82d8SChao Yu bool clean; 1845052a82d8SChao Yu 1846052a82d8SChao Yu if (inode->i_ino != ino) 1847052a82d8SChao Yu return 0; 1848052a82d8SChao Yu 1849052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1850052a82d8SChao Yu return 0; 1851052a82d8SChao Yu 1852052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1853052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1854052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1855052a82d8SChao Yu 1856052a82d8SChao Yu if (clean) 1857052a82d8SChao Yu return 0; 1858052a82d8SChao Yu 1859052a82d8SChao Yu inode = igrab(inode); 1860052a82d8SChao Yu if (!inode) 1861052a82d8SChao Yu return 0; 1862052a82d8SChao Yu return 1; 1863052a82d8SChao Yu } 1864052a82d8SChao Yu 1865052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1866052a82d8SChao Yu { 1867052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1868052a82d8SChao Yu struct inode *inode; 1869052a82d8SChao Yu nid_t ino = ino_of_node(page); 1870052a82d8SChao Yu 1871052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1872052a82d8SChao Yu if (!inode) 1873052a82d8SChao Yu return false; 1874052a82d8SChao Yu 1875052a82d8SChao Yu f2fs_update_inode(inode, page); 1876052a82d8SChao Yu unlock_page(page); 1877052a82d8SChao Yu 1878052a82d8SChao Yu iput(inode); 1879052a82d8SChao Yu return true; 1880052a82d8SChao Yu } 1881052a82d8SChao Yu 188268e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 188334c061adSSayali Lokhande { 188434c061adSSayali Lokhande pgoff_t index = 0; 188534c061adSSayali Lokhande struct pagevec pvec; 188634c061adSSayali Lokhande int nr_pages; 188734c061adSSayali Lokhande 188834c061adSSayali Lokhande pagevec_init(&pvec); 188934c061adSSayali Lokhande 189034c061adSSayali Lokhande while ((nr_pages = pagevec_lookup_tag(&pvec, 189134c061adSSayali Lokhande NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 189234c061adSSayali Lokhande int i; 189334c061adSSayali Lokhande 189434c061adSSayali Lokhande for (i = 0; i < nr_pages; i++) { 189534c061adSSayali Lokhande struct page *page = pvec.pages[i]; 189634c061adSSayali Lokhande 189734c061adSSayali Lokhande if (!IS_DNODE(page)) 189834c061adSSayali Lokhande continue; 189934c061adSSayali Lokhande 190034c061adSSayali Lokhande lock_page(page); 190134c061adSSayali Lokhande 190234c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 190334c061adSSayali Lokhande continue_unlock: 190434c061adSSayali Lokhande unlock_page(page); 190534c061adSSayali Lokhande continue; 190634c061adSSayali Lokhande } 190734c061adSSayali Lokhande 190834c061adSSayali Lokhande if (!PageDirty(page)) { 190934c061adSSayali Lokhande /* someone wrote it for us */ 191034c061adSSayali Lokhande goto continue_unlock; 191134c061adSSayali Lokhande } 191234c061adSSayali Lokhande 191334c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1914b763f3beSChao Yu if (page_private_inline(page)) { 1915b763f3beSChao Yu clear_page_private_inline(page); 191634c061adSSayali Lokhande unlock_page(page); 191734c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 191834c061adSSayali Lokhande continue; 191934c061adSSayali Lokhande } 192034c061adSSayali Lokhande unlock_page(page); 192134c061adSSayali Lokhande } 192234c061adSSayali Lokhande pagevec_release(&pvec); 192334c061adSSayali Lokhande cond_resched(); 192434c061adSSayali Lokhande } 192534c061adSSayali Lokhande } 192634c061adSSayali Lokhande 19274d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 19284d57b86dSChao Yu struct writeback_control *wbc, 1929b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 193052681375SJaegeuk Kim { 1931028a63a6SJan Kara pgoff_t index; 193252681375SJaegeuk Kim struct pagevec pvec; 193352681375SJaegeuk Kim int step = 0; 193412bb0a8fSJaegeuk Kim int nwritten = 0; 19353f5f4959SChao Yu int ret = 0; 1936c29fd0c0SChao Yu int nr_pages, done = 0; 1937e05df3b1SJaegeuk Kim 193886679820SMel Gorman pagevec_init(&pvec); 1939e05df3b1SJaegeuk Kim 1940e05df3b1SJaegeuk Kim next_step: 1941e05df3b1SJaegeuk Kim index = 0; 1942e05df3b1SJaegeuk Kim 1943c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1944c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1945028a63a6SJan Kara int i; 1946e05df3b1SJaegeuk Kim 1947e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1948e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1949d68f735bSJaegeuk Kim bool submitted = false; 1950052a82d8SChao Yu bool may_dirty = true; 1951e05df3b1SJaegeuk Kim 1952c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1953c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1954c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1955c29fd0c0SChao Yu done = 1; 1956c29fd0c0SChao Yu break; 1957c29fd0c0SChao Yu } 1958c29fd0c0SChao Yu 1959e05df3b1SJaegeuk Kim /* 1960e05df3b1SJaegeuk Kim * flushing sequence with step: 1961e05df3b1SJaegeuk Kim * 0. indirect nodes 1962e05df3b1SJaegeuk Kim * 1. dentry dnodes 1963e05df3b1SJaegeuk Kim * 2. file dnodes 1964e05df3b1SJaegeuk Kim */ 1965e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1966e05df3b1SJaegeuk Kim continue; 1967e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1968e05df3b1SJaegeuk Kim is_cold_node(page))) 1969e05df3b1SJaegeuk Kim continue; 1970e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1971e05df3b1SJaegeuk Kim !is_cold_node(page))) 1972e05df3b1SJaegeuk Kim continue; 19739a4cbc9eSChao Yu lock_node: 19744b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 19754b270a8cSChao Yu lock_page(page); 19764b270a8cSChao Yu else if (!trylock_page(page)) 1977e05df3b1SJaegeuk Kim continue; 1978e05df3b1SJaegeuk Kim 19794ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1980e05df3b1SJaegeuk Kim continue_unlock: 1981e05df3b1SJaegeuk Kim unlock_page(page); 1982e05df3b1SJaegeuk Kim continue; 1983e05df3b1SJaegeuk Kim } 1984e05df3b1SJaegeuk Kim 1985e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1986e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1987e05df3b1SJaegeuk Kim goto continue_unlock; 1988e05df3b1SJaegeuk Kim } 1989e05df3b1SJaegeuk Kim 1990b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 1991b0f3b87fSJaegeuk Kim if (!do_balance) 1992b0f3b87fSJaegeuk Kim goto write_node; 1993b0f3b87fSJaegeuk Kim 1994b0f3b87fSJaegeuk Kim /* flush inline_data */ 1995b763f3beSChao Yu if (page_private_inline(page)) { 1996b763f3beSChao Yu clear_page_private_inline(page); 19972049d4fcSJaegeuk Kim unlock_page(page); 19982049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 19999a4cbc9eSChao Yu goto lock_node; 20002049d4fcSJaegeuk Kim } 20012049d4fcSJaegeuk Kim 2002052a82d8SChao Yu /* flush dirty inode */ 2003052a82d8SChao Yu if (IS_INODE(page) && may_dirty) { 2004052a82d8SChao Yu may_dirty = false; 2005052a82d8SChao Yu if (flush_dirty_inode(page)) 2006052a82d8SChao Yu goto lock_node; 2007052a82d8SChao Yu } 2008b0f3b87fSJaegeuk Kim write_node: 2009bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 2010fa3d2bdfSJaegeuk Kim 2011e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 2012e05df3b1SJaegeuk Kim goto continue_unlock; 2013e05df3b1SJaegeuk Kim 2014e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 2015e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 201652746519SJaegeuk Kim 2017401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 201850fa53ecSChao Yu wbc, do_balance, io_type, NULL); 2019d68f735bSJaegeuk Kim if (ret) 202052746519SJaegeuk Kim unlock_page(page); 2021d68f735bSJaegeuk Kim else if (submitted) 20223f5f4959SChao Yu nwritten++; 2023e05df3b1SJaegeuk Kim 2024e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 2025e05df3b1SJaegeuk Kim break; 2026e05df3b1SJaegeuk Kim } 2027e05df3b1SJaegeuk Kim pagevec_release(&pvec); 2028e05df3b1SJaegeuk Kim cond_resched(); 2029e05df3b1SJaegeuk Kim 2030e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 2031e05df3b1SJaegeuk Kim step = 2; 2032e05df3b1SJaegeuk Kim break; 2033e05df3b1SJaegeuk Kim } 2034e05df3b1SJaegeuk Kim } 2035e05df3b1SJaegeuk Kim 2036e05df3b1SJaegeuk Kim if (step < 2) { 2037100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2038100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2039fd8c8cafSChao Yu goto out; 2040e05df3b1SJaegeuk Kim step++; 2041e05df3b1SJaegeuk Kim goto next_step; 2042e05df3b1SJaegeuk Kim } 2043fd8c8cafSChao Yu out: 20443f5f4959SChao Yu if (nwritten) 2045b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2046db198ae0SChao Yu 2047db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2048db198ae0SChao Yu return -EIO; 20493f5f4959SChao Yu return ret; 2050e05df3b1SJaegeuk Kim } 2051e05df3b1SJaegeuk Kim 205250fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 205350fa53ecSChao Yu unsigned int seq_id) 2054cfe58f9dSJaegeuk Kim { 205550fa53ecSChao Yu struct fsync_node_entry *fn; 205650fa53ecSChao Yu struct page *page; 205750fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 205850fa53ecSChao Yu unsigned long flags; 205950fa53ecSChao Yu unsigned int cur_seq_id = 0; 2060280db3c8SMiklos Szeredi int ret2, ret = 0; 2061cfe58f9dSJaegeuk Kim 206250fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 206350fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 206450fa53ecSChao Yu if (list_empty(head)) { 206550fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 206650fa53ecSChao Yu break; 206750fa53ecSChao Yu } 206850fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 206950fa53ecSChao Yu if (fn->seq_id > seq_id) { 207050fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 207150fa53ecSChao Yu break; 207250fa53ecSChao Yu } 207350fa53ecSChao Yu cur_seq_id = fn->seq_id; 207450fa53ecSChao Yu page = fn->page; 207550fa53ecSChao Yu get_page(page); 207650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20774ef51a8fSJaegeuk Kim 2078bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 2079cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 2080cfe58f9dSJaegeuk Kim ret = -EIO; 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 2152cbc975b1SMatthew Wilcox (Oracle) if (!folio_test_dirty(folio)) { 2153cbc975b1SMatthew Wilcox (Oracle) filemap_dirty_folio(mapping, folio); 215429c87793SMatthew Wilcox (Oracle) inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 2155cbc975b1SMatthew Wilcox (Oracle) set_page_private_reference(&folio->page); 2156cbc975b1SMatthew Wilcox (Oracle) return true; 2157e05df3b1SJaegeuk Kim } 2158cbc975b1SMatthew Wilcox (Oracle) return false; 2159e05df3b1SJaegeuk Kim } 2160e05df3b1SJaegeuk Kim 21610a8165d7SJaegeuk Kim /* 2162e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2163e05df3b1SJaegeuk Kim */ 2164e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2165e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2166e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2167cbc975b1SMatthew Wilcox (Oracle) .dirty_folio = f2fs_dirty_node_folio, 216891503996SMatthew Wilcox (Oracle) .invalidate_folio = f2fs_invalidate_folio, 2169487261f3SChao Yu .releasepage = f2fs_release_page, 21705b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 21715b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 21725b7a487cSWeichao Guo #endif 2173e05df3b1SJaegeuk Kim }; 2174e05df3b1SJaegeuk Kim 21758a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 21768a7ed66aSJaegeuk Kim nid_t n) 2177e05df3b1SJaegeuk Kim { 21788a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 21793aa770a9SNamjae Jeon } 2180e05df3b1SJaegeuk Kim 21819a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2182b815bdc7SLiu Song struct free_nid *i) 2183e05df3b1SJaegeuk Kim { 2184b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2185eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 21865f029c04SYi Zhuang 2187eb0aa4b8SJaegeuk Kim if (err) 2188eb0aa4b8SJaegeuk Kim return err; 2189eb0aa4b8SJaegeuk Kim 2190b815bdc7SLiu Song nm_i->nid_cnt[FREE_NID]++; 21919a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2192eb0aa4b8SJaegeuk Kim return 0; 2193b8559dc2SChao Yu } 2194b8559dc2SChao Yu 21959a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2196a0761f63SFan Li struct free_nid *i, enum nid_state state) 2197b8559dc2SChao Yu { 2198b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2199b8559dc2SChao Yu 22009a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 22019a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 22029a4ffdf5SChao Yu if (state == FREE_NID) 2203e05df3b1SJaegeuk Kim list_del(&i->list); 22048a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2205e05df3b1SJaegeuk Kim } 2206e05df3b1SJaegeuk Kim 2207a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2208a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2209a0761f63SFan Li { 2210a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2211a0761f63SFan Li 2212a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2213a0761f63SFan Li i->state = dst_state; 2214a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2215a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2216a0761f63SFan Li 2217a0761f63SFan Li switch (dst_state) { 2218a0761f63SFan Li case PREALLOC_NID: 2219a0761f63SFan Li list_del(&i->list); 2220a0761f63SFan Li break; 2221a0761f63SFan Li case FREE_NID: 2222a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2223a0761f63SFan Li break; 2224a0761f63SFan Li default: 2225a0761f63SFan Li BUG_ON(1); 2226a0761f63SFan Li } 2227a0761f63SFan Li } 2228a0761f63SFan Li 222994c821fbSChao Yu bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi) 223094c821fbSChao Yu { 223194c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 223294c821fbSChao Yu unsigned int i; 223394c821fbSChao Yu bool ret = true; 223494c821fbSChao Yu 2235e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 223694c821fbSChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 223794c821fbSChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) { 223894c821fbSChao Yu ret = false; 223994c821fbSChao Yu break; 224094c821fbSChao Yu } 224194c821fbSChao Yu } 2242e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 224394c821fbSChao Yu 224494c821fbSChao Yu return ret; 224594c821fbSChao Yu } 224694c821fbSChao Yu 22475921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 22485921aaa1SLiFan bool set, bool build) 22495921aaa1SLiFan { 22505921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 22515921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 22525921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 22535921aaa1SLiFan 22545921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 22555921aaa1SLiFan return; 22565921aaa1SLiFan 22575921aaa1SLiFan if (set) { 22585921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22595921aaa1SLiFan return; 22605921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22615921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 22625921aaa1SLiFan } else { 22635921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22645921aaa1SLiFan return; 22655921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22665921aaa1SLiFan if (!build) 22675921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 22685921aaa1SLiFan } 22695921aaa1SLiFan } 22705921aaa1SLiFan 22714ac91242SChao Yu /* return if the nid is recognized as free */ 22725921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 22735921aaa1SLiFan nid_t nid, bool build, bool update) 2274e05df3b1SJaegeuk Kim { 22756fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 227630a61ddfSChao Yu struct free_nid *i, *e; 227759bbd474SJaegeuk Kim struct nat_entry *ne; 227830a61ddfSChao Yu int err = -EINVAL; 227930a61ddfSChao Yu bool ret = false; 22809198acebSJaegeuk Kim 22819198acebSJaegeuk Kim /* 0 nid should not be used */ 2282cfb271d4SChao Yu if (unlikely(nid == 0)) 22834ac91242SChao Yu return false; 228459bbd474SJaegeuk Kim 2285626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2286626bcf2bSChao Yu return false; 2287626bcf2bSChao Yu 228832410577SChao Yu i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL); 2289e05df3b1SJaegeuk Kim i->nid = nid; 22909a4ffdf5SChao Yu i->state = FREE_NID; 2291e05df3b1SJaegeuk Kim 22925921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2293769ec6e5SJaegeuk Kim 2294b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 229530a61ddfSChao Yu 229630a61ddfSChao Yu if (build) { 229730a61ddfSChao Yu /* 229830a61ddfSChao Yu * Thread A Thread B 229930a61ddfSChao Yu * - f2fs_create 230030a61ddfSChao Yu * - f2fs_new_inode 23014d57b86dSChao Yu * - f2fs_alloc_nid 23029a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 230330a61ddfSChao Yu * - f2fs_balance_fs_bg 23044d57b86dSChao Yu * - f2fs_build_free_nids 23054d57b86dSChao Yu * - __f2fs_build_free_nids 230630a61ddfSChao Yu * - scan_nat_page 230730a61ddfSChao Yu * - add_free_nid 230830a61ddfSChao Yu * - __lookup_nat_cache 230930a61ddfSChao Yu * - f2fs_add_link 23104d57b86dSChao Yu * - f2fs_init_inode_metadata 23114d57b86dSChao Yu * - f2fs_new_inode_page 23124d57b86dSChao Yu * - f2fs_new_node_page 231330a61ddfSChao Yu * - set_node_addr 23144d57b86dSChao Yu * - f2fs_alloc_nid_done 23159a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 23169a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 231730a61ddfSChao Yu */ 231830a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 231930a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 232030a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 232130a61ddfSChao Yu goto err_out; 232230a61ddfSChao Yu 232330a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 232430a61ddfSChao Yu if (e) { 23259a4ffdf5SChao Yu if (e->state == FREE_NID) 232630a61ddfSChao Yu ret = true; 232730a61ddfSChao Yu goto err_out; 232830a61ddfSChao Yu } 232930a61ddfSChao Yu } 233030a61ddfSChao Yu ret = true; 2331b815bdc7SLiu Song err = __insert_free_nid(sbi, i); 233230a61ddfSChao Yu err_out: 23335921aaa1SLiFan if (update) { 23345921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 23355921aaa1SLiFan if (!build) 23365921aaa1SLiFan nm_i->available_nids++; 23375921aaa1SLiFan } 2338b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2339769ec6e5SJaegeuk Kim radix_tree_preload_end(); 23405921aaa1SLiFan 234130a61ddfSChao Yu if (err) 2342e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 234330a61ddfSChao Yu return ret; 2344e05df3b1SJaegeuk Kim } 2345e05df3b1SJaegeuk Kim 2346b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2347e05df3b1SJaegeuk Kim { 2348b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2349e05df3b1SJaegeuk Kim struct free_nid *i; 2350cf0ee0f0SChao Yu bool need_free = false; 2351cf0ee0f0SChao Yu 2352b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23538a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 23549a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2355a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2356cf0ee0f0SChao Yu need_free = true; 2357e05df3b1SJaegeuk Kim } 2358b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2359cf0ee0f0SChao Yu 2360cf0ee0f0SChao Yu if (need_free) 2361cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2362e05df3b1SJaegeuk Kim } 2363e05df3b1SJaegeuk Kim 2364e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2365e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2366e05df3b1SJaegeuk Kim { 23676fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2368e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2369e05df3b1SJaegeuk Kim block_t blk_addr; 23704ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2371e05df3b1SJaegeuk Kim int i; 2372e05df3b1SJaegeuk Kim 237323380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 23744ac91242SChao Yu 2375e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2376e05df3b1SJaegeuk Kim 2377e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2378cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 237904431c44SJaegeuk Kim break; 238023d38844SHaicheng Li 2381e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2382e2374015SChao Yu 2383e2374015SChao Yu if (blk_addr == NEW_ADDR) 2384e2374015SChao Yu return -EINVAL; 2385e2374015SChao Yu 23865921aaa1SLiFan if (blk_addr == NULL_ADDR) { 23875921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 23885921aaa1SLiFan } else { 2389346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 23905921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2391346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2392e05df3b1SJaegeuk Kim } 2393e05df3b1SJaegeuk Kim } 2394e2374015SChao Yu 2395e2374015SChao Yu return 0; 23965921aaa1SLiFan } 2397e05df3b1SJaegeuk Kim 23982fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 23994ac91242SChao Yu { 24004ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 24014ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 24022fbaa25fSChao Yu int i; 24034ac91242SChao Yu 24044ac91242SChao Yu down_read(&curseg->journal_rwsem); 24054ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 24064ac91242SChao Yu block_t addr; 24074ac91242SChao Yu nid_t nid; 24084ac91242SChao Yu 24094ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 24104ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 24114ac91242SChao Yu if (addr == NULL_ADDR) 24125921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24134ac91242SChao Yu else 24144ac91242SChao Yu remove_free_nid(sbi, nid); 24154ac91242SChao Yu } 24164ac91242SChao Yu up_read(&curseg->journal_rwsem); 24172fbaa25fSChao Yu } 24182fbaa25fSChao Yu 2419e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 24204ac91242SChao Yu { 24214ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 24224ac91242SChao Yu unsigned int i, idx; 242397456574SFan Li nid_t nid; 24244ac91242SChao Yu 2425e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 24264ac91242SChao Yu 24274ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 24284ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 24294ac91242SChao Yu continue; 24304ac91242SChao Yu if (!nm_i->free_nid_count[i]) 24314ac91242SChao Yu continue; 24324ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 243397456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 243497456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 243597456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 243697456574SFan Li break; 24374ac91242SChao Yu 24384ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 24395921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24404ac91242SChao Yu 24419a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 24424ac91242SChao Yu goto out; 24434ac91242SChao Yu } 24444ac91242SChao Yu } 24454ac91242SChao Yu out: 24462fbaa25fSChao Yu scan_curseg_cache(sbi); 24474ac91242SChao Yu 2448e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 24494ac91242SChao Yu } 24504ac91242SChao Yu 2451e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 24524d57b86dSChao Yu bool sync, bool mount) 2453e05df3b1SJaegeuk Kim { 2454e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2455e2374015SChao Yu int i = 0, ret; 245655008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2457e05df3b1SJaegeuk Kim 2458e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2459e9cdd307SYunlei He nid = 0; 2460e9cdd307SYunlei He 2461e2cab031SSahitya Tummala if (unlikely(nid % NAT_ENTRY_PER_BLOCK)) 2462e2cab031SSahitya Tummala nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK; 2463e2cab031SSahitya Tummala 246455008d84SJaegeuk Kim /* Enough entries */ 24659a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2466e2374015SChao Yu return 0; 2467e05df3b1SJaegeuk Kim 24684d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2469e2374015SChao Yu return 0; 2470e05df3b1SJaegeuk Kim 24714ac91242SChao Yu if (!mount) { 24724ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 24734ac91242SChao Yu scan_free_nid_bits(sbi); 24744ac91242SChao Yu 247574986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2476e2374015SChao Yu return 0; 247722ad0b6aSJaegeuk Kim } 247822ad0b6aSJaegeuk Kim 247955008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 24804d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 248126879fb1SChao Yu META_NAT, true); 2482e05df3b1SJaegeuk Kim 2483e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 2484a5131193SJaegeuk Kim 2485e05df3b1SJaegeuk Kim while (1) { 248666e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 248766e83361SYunlei He nm_i->nat_block_bitmap)) { 2488e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2489e05df3b1SJaegeuk Kim 2490edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2491edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2492edc55aafSJaegeuk Kim } else { 2493e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2494e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2495edc55aafSJaegeuk Kim } 2496e2374015SChao Yu 2497e2374015SChao Yu if (ret) { 2498e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 2499dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2500edc55aafSJaegeuk Kim return ret; 2501e2374015SChao Yu } 250266e83361SYunlei He } 2503e05df3b1SJaegeuk Kim 2504e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2505cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2506e05df3b1SJaegeuk Kim nid = 0; 250755008d84SJaegeuk Kim 2508a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2509e05df3b1SJaegeuk Kim break; 2510e05df3b1SJaegeuk Kim } 2511e05df3b1SJaegeuk Kim 251255008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 251355008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2514e05df3b1SJaegeuk Kim 2515e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 25162fbaa25fSChao Yu scan_curseg_cache(sbi); 2517dfc08a12SChao Yu 2518e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 25192db2388fSChao Yu 25204d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2521ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2522e2374015SChao Yu 2523e2374015SChao Yu return 0; 2524e05df3b1SJaegeuk Kim } 2525e05df3b1SJaegeuk Kim 2526e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 25272411cf5bSChao Yu { 2528e2374015SChao Yu int ret; 2529e2374015SChao Yu 25302411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2531e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 25322411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2533e2374015SChao Yu 2534e2374015SChao Yu return ret; 25352411cf5bSChao Yu } 25362411cf5bSChao Yu 2537e05df3b1SJaegeuk Kim /* 2538e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2539e05df3b1SJaegeuk Kim * from second parameter of this function. 2540e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2541e05df3b1SJaegeuk Kim */ 25424d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2543e05df3b1SJaegeuk Kim { 2544e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2545e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2546e05df3b1SJaegeuk Kim retry: 254755523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 2548c45d6002SChao Yu f2fs_show_injection_info(sbi, FAULT_ALLOC_NID); 2549cb78942bSJaegeuk Kim return false; 255055523519SChao Yu } 25517fa750a1SArnd Bergmann 2552b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2553e05df3b1SJaegeuk Kim 255404d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 255504d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 255604d47e67SChao Yu return false; 255704d47e67SChao Yu } 2558e05df3b1SJaegeuk Kim 25594d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 25604d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 25619a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 25629a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2563b8559dc2SChao Yu struct free_nid, list); 2564e05df3b1SJaegeuk Kim *nid = i->nid; 2565b8559dc2SChao Yu 2566a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 256704d47e67SChao Yu nm_i->available_nids--; 25684ac91242SChao Yu 2569346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 25704ac91242SChao Yu 2571b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2572e05df3b1SJaegeuk Kim return true; 2573e05df3b1SJaegeuk Kim } 2574b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 257555008d84SJaegeuk Kim 257655008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2577f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 257855008d84SJaegeuk Kim goto retry; 2579f84262b0SJaegeuk Kim return false; 258055008d84SJaegeuk Kim } 2581e05df3b1SJaegeuk Kim 25820a8165d7SJaegeuk Kim /* 25834d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2584e05df3b1SJaegeuk Kim */ 25854d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2586e05df3b1SJaegeuk Kim { 2587e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2588e05df3b1SJaegeuk Kim struct free_nid *i; 2589e05df3b1SJaegeuk Kim 2590b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25918a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2592b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2593a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2594b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2595cf0ee0f0SChao Yu 2596cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2597e05df3b1SJaegeuk Kim } 2598e05df3b1SJaegeuk Kim 25990a8165d7SJaegeuk Kim /* 26004d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2601e05df3b1SJaegeuk Kim */ 26024d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2603e05df3b1SJaegeuk Kim { 260449952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 260549952fa1SJaegeuk Kim struct free_nid *i; 2606cf0ee0f0SChao Yu bool need_free = false; 260749952fa1SJaegeuk Kim 260865985d93SJaegeuk Kim if (!nid) 260965985d93SJaegeuk Kim return; 261065985d93SJaegeuk Kim 2611b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26128a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2613b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2614b8559dc2SChao Yu 26154d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2616a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2617cf0ee0f0SChao Yu need_free = true; 261895630cbaSHaicheng Li } else { 2619a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 262095630cbaSHaicheng Li } 262104d47e67SChao Yu 262204d47e67SChao Yu nm_i->available_nids++; 262304d47e67SChao Yu 2624346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 26254ac91242SChao Yu 2626b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2627cf0ee0f0SChao Yu 2628cf0ee0f0SChao Yu if (need_free) 2629cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2630e05df3b1SJaegeuk Kim } 2631e05df3b1SJaegeuk Kim 26324d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 263331696580SChao Yu { 263431696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 263531696580SChao Yu int nr = nr_shrink; 263631696580SChao Yu 26379a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2638ad4edb83SJaegeuk Kim return 0; 2639ad4edb83SJaegeuk Kim 264031696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 264131696580SChao Yu return 0; 264231696580SChao Yu 2643042be373SChao Yu while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) { 2644042be373SChao Yu struct free_nid *i, *next; 2645042be373SChao Yu unsigned int batch = SHRINK_NID_BATCH_SIZE; 2646042be373SChao Yu 2647b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26489a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2649042be373SChao Yu if (!nr_shrink || !batch || 26509a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 265131696580SChao Yu break; 2652a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 265331696580SChao Yu kmem_cache_free(free_nid_slab, i); 265431696580SChao Yu nr_shrink--; 2655042be373SChao Yu batch--; 265631696580SChao Yu } 2657b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2658042be373SChao Yu } 2659042be373SChao Yu 266031696580SChao Yu mutex_unlock(&nm_i->build_lock); 266131696580SChao Yu 266231696580SChao Yu return nr - nr_shrink; 266331696580SChao Yu } 266431696580SChao Yu 26659627a7b3SChao Yu int f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 266628cdce04SChao Yu { 266728cdce04SChao Yu void *src_addr, *dst_addr; 266828cdce04SChao Yu size_t inline_size; 266928cdce04SChao Yu struct page *ipage; 267028cdce04SChao Yu struct f2fs_inode *ri; 267128cdce04SChao Yu 26724d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 26739627a7b3SChao Yu if (IS_ERR(ipage)) 26749627a7b3SChao Yu return PTR_ERR(ipage); 267528cdce04SChao Yu 2676e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 26771eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 267896dd0251SChao Yu if (!f2fs_has_inline_xattr(inode)) { 26791eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 268096dd0251SChao Yu stat_inc_inline_xattr(inode); 268196dd0251SChao Yu } 26821eca05aaSYunlei He } else { 268396dd0251SChao Yu if (f2fs_has_inline_xattr(inode)) { 268496dd0251SChao Yu stat_dec_inline_xattr(inode); 268591942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 268696dd0251SChao Yu } 2687e3b4d43fSJaegeuk Kim goto update_inode; 2688e3b4d43fSJaegeuk Kim } 2689e3b4d43fSJaegeuk Kim 26906afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 26916afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 269228cdce04SChao Yu inline_size = inline_xattr_size(inode); 269328cdce04SChao Yu 2694bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 269528cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2696e3b4d43fSJaegeuk Kim update_inode: 26974d57b86dSChao Yu f2fs_update_inode(inode, ipage); 269828cdce04SChao Yu f2fs_put_page(ipage, 1); 26999627a7b3SChao Yu return 0; 270028cdce04SChao Yu } 270128cdce04SChao Yu 27024d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2703abb2366cSJaegeuk Kim { 27044081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2705abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 270687905682SYunlei He nid_t new_xnid; 270787905682SYunlei He struct dnode_of_data dn; 2708abb2366cSJaegeuk Kim struct node_info ni; 2709d260081cSChao Yu struct page *xpage; 27107735730dSChao Yu int err; 2711abb2366cSJaegeuk Kim 2712abb2366cSJaegeuk Kim if (!prev_xnid) 2713abb2366cSJaegeuk Kim goto recover_xnid; 2714abb2366cSJaegeuk Kim 2715d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2716a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, prev_xnid, &ni, false); 27177735730dSChao Yu if (err) 27187735730dSChao Yu return err; 27197735730dSChao Yu 27204d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2721000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2722479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2723abb2366cSJaegeuk Kim 2724abb2366cSJaegeuk Kim recover_xnid: 2725d260081cSChao Yu /* 2: update xattr nid in inode */ 27264d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 272787905682SYunlei He return -ENOSPC; 272887905682SYunlei He 272987905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 27304d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 273187905682SYunlei He if (IS_ERR(xpage)) { 27324d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 273387905682SYunlei He return PTR_ERR(xpage); 273487905682SYunlei He } 273587905682SYunlei He 27364d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 27374d57b86dSChao Yu f2fs_update_inode_page(inode); 2738abb2366cSJaegeuk Kim 2739d260081cSChao Yu /* 3: update and set xattr node page dirty */ 274087905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2741d260081cSChao Yu 2742d260081cSChao Yu set_page_dirty(xpage); 2743d260081cSChao Yu f2fs_put_page(xpage, 1); 2744abb2366cSJaegeuk Kim 2745d260081cSChao Yu return 0; 2746abb2366cSJaegeuk Kim } 2747abb2366cSJaegeuk Kim 27484d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2749e05df3b1SJaegeuk Kim { 275058bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2751e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2752e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2753e05df3b1SJaegeuk Kim struct page *ipage; 27547735730dSChao Yu int err; 2755e05df3b1SJaegeuk Kim 2756a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, ino, &old_ni, false); 27577735730dSChao Yu if (err) 27587735730dSChao Yu return err; 2759e8271fa3SJaegeuk Kim 2760e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2761e8271fa3SJaegeuk Kim return -EINVAL; 2762e8ea9b3dSJaegeuk Kim retry: 2763300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2764e8ea9b3dSJaegeuk Kim if (!ipage) { 27654034247aSNeilBrown memalloc_retry_wait(GFP_NOFS); 2766e8ea9b3dSJaegeuk Kim goto retry; 2767e8ea9b3dSJaegeuk Kim } 2768e05df3b1SJaegeuk Kim 2769e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2770b8559dc2SChao Yu remove_free_nid(sbi, ino); 2771e05df3b1SJaegeuk Kim 2772237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2773e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2774e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2775ef2a0071SChao Yu set_cold_node(ipage, false); 2776e05df3b1SJaegeuk Kim 277758bfaf44SJaegeuk Kim src = F2FS_INODE(page); 277858bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2779e05df3b1SJaegeuk Kim 278036218b81SZheng Yongjun memcpy(dst, src, offsetof(struct f2fs_inode, i_ext)); 278158bfaf44SJaegeuk Kim dst->i_size = 0; 278258bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 278358bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 278458bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 27857a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 27865c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 27877a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 27886afc662eSChao Yu 27897beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 27906afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27916afc662eSChao Yu i_inline_xattr_size)) 27926afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 27936afc662eSChao Yu 27947beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 27955c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27965c57132eSChao Yu i_projid)) 27975c57132eSChao Yu dst->i_projid = src->i_projid; 27985cd1f387SChao Yu 27997beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 28005cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 28015cd1f387SChao Yu i_crtime_nsec)) { 28025cd1f387SChao Yu dst->i_crtime = src->i_crtime; 28035cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 28045cd1f387SChao Yu } 28055c57132eSChao Yu } 2806e05df3b1SJaegeuk Kim 2807e05df3b1SJaegeuk Kim new_ni = old_ni; 2808e05df3b1SJaegeuk Kim new_ni.ino = ino; 2809e05df3b1SJaegeuk Kim 28100abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 281165e5cd0aSJaegeuk Kim WARN_ON(1); 2812479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2813e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2814617deb8cSJaegeuk Kim set_page_dirty(ipage); 2815e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2816e05df3b1SJaegeuk Kim return 0; 2817e05df3b1SJaegeuk Kim } 2818e05df3b1SJaegeuk Kim 28197735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2820e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2821e05df3b1SJaegeuk Kim { 2822e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2823e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2824e05df3b1SJaegeuk Kim block_t addr; 28259ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2826e05df3b1SJaegeuk Kim 2827e05df3b1SJaegeuk Kim /* scan the node segment */ 2828e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2829e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2830e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2831e05df3b1SJaegeuk Kim 28329ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 28335f7136dbSMatthew Wilcox (Oracle) nrpages = bio_max_segs(last_offset - i); 2834393ff91fSJaegeuk Kim 28359af0ff1cSChao Yu /* readahead node pages */ 28364d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 28379af0ff1cSChao Yu 28389ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 28394d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2840393ff91fSJaegeuk Kim 28417735730dSChao Yu if (IS_ERR(page)) 28427735730dSChao Yu return PTR_ERR(page); 28437735730dSChao Yu 28449ecf4b80SChao Yu rn = F2FS_NODE(page); 2845393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2846393ff91fSJaegeuk Kim sum_entry->version = 0; 2847393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 28489af0ff1cSChao Yu sum_entry++; 28499ecf4b80SChao Yu f2fs_put_page(page, 1); 28509af0ff1cSChao Yu } 2851bac4eef6SChao Yu 28529ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2853bac4eef6SChao Yu addr + nrpages); 28549af0ff1cSChao Yu } 28557735730dSChao Yu return 0; 2856e05df3b1SJaegeuk Kim } 2857e05df3b1SJaegeuk Kim 2858aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2859e05df3b1SJaegeuk Kim { 2860e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2861e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2862b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2863e05df3b1SJaegeuk Kim int i; 2864e05df3b1SJaegeuk Kim 2865b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2866dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2867e05df3b1SJaegeuk Kim struct nat_entry *ne; 2868e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2869dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2870e05df3b1SJaegeuk Kim 2871b862676eSChao Yu if (f2fs_check_nid_range(sbi, nid)) 2872b862676eSChao Yu continue; 2873b862676eSChao Yu 2874dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 28759be32d72SJaegeuk Kim 2876e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2877e05df3b1SJaegeuk Kim if (!ne) { 287832410577SChao Yu ne = __alloc_nat_entry(sbi, nid, true); 287912f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 28809be32d72SJaegeuk Kim } 288104d47e67SChao Yu 288204d47e67SChao Yu /* 288304d47e67SChao Yu * if a free nat in journal has not been used after last 288404d47e67SChao Yu * checkpoint, we should remove it from available nids, 288504d47e67SChao Yu * since later we will add it again. 288604d47e67SChao Yu */ 288704d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 288804d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 288904d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 289004d47e67SChao Yu nm_i->available_nids--; 289104d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 289204d47e67SChao Yu } 289304d47e67SChao Yu 2894e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2895e05df3b1SJaegeuk Kim } 2896dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2897b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2898e05df3b1SJaegeuk Kim } 2899e05df3b1SJaegeuk Kim 2900309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2901309cc2b6SJaegeuk Kim struct list_head *head, int max) 2902e05df3b1SJaegeuk Kim { 2903309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2904e05df3b1SJaegeuk Kim 2905309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2906309cc2b6SJaegeuk Kim goto add_out; 2907e05df3b1SJaegeuk Kim 2908309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2909309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2910309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2911309cc2b6SJaegeuk Kim return; 2912309cc2b6SJaegeuk Kim } 2913309cc2b6SJaegeuk Kim } 2914309cc2b6SJaegeuk Kim add_out: 2915309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2916aec71382SChao Yu } 2917aec71382SChao Yu 291894c821fbSChao Yu static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs, 291994c821fbSChao Yu unsigned int valid) 292094c821fbSChao Yu { 292194c821fbSChao Yu if (valid == 0) { 292294c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->empty_nat_bits); 292394c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 292494c821fbSChao Yu return; 292594c821fbSChao Yu } 292694c821fbSChao Yu 292794c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->empty_nat_bits); 292894c821fbSChao Yu if (valid == NAT_ENTRY_PER_BLOCK) 292994c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->full_nat_bits); 293094c821fbSChao Yu else 293194c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 293294c821fbSChao Yu } 293394c821fbSChao Yu 293494c821fbSChao Yu static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 293522ad0b6aSJaegeuk Kim struct page *page) 293622ad0b6aSJaegeuk Kim { 293722ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 293822ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 293922ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 294022ad0b6aSJaegeuk Kim int valid = 0; 294137a0ab2aSFan Li int i = 0; 294222ad0b6aSJaegeuk Kim 294394c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 294422ad0b6aSJaegeuk Kim return; 294522ad0b6aSJaegeuk Kim 294637a0ab2aSFan Li if (nat_index == 0) { 294737a0ab2aSFan Li valid = 1; 294837a0ab2aSFan Li i = 1; 294937a0ab2aSFan Li } 295037a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 295136af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 295222ad0b6aSJaegeuk Kim valid++; 295322ad0b6aSJaegeuk Kim } 295494c821fbSChao Yu 295594c821fbSChao Yu __update_nat_bits(nm_i, nat_index, valid); 295622ad0b6aSJaegeuk Kim } 295722ad0b6aSJaegeuk Kim 295894c821fbSChao Yu void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi) 295994c821fbSChao Yu { 296094c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 296194c821fbSChao Yu unsigned int nat_ofs; 296294c821fbSChao Yu 2963e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 296494c821fbSChao Yu 296594c821fbSChao Yu for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) { 296694c821fbSChao Yu unsigned int valid = 0, nid_ofs = 0; 296794c821fbSChao Yu 296894c821fbSChao Yu /* handle nid zero due to it should never be used */ 296994c821fbSChao Yu if (unlikely(nat_ofs == 0)) { 297094c821fbSChao Yu valid = 1; 297194c821fbSChao Yu nid_ofs = 1; 297294c821fbSChao Yu } 297394c821fbSChao Yu 297494c821fbSChao Yu for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) { 297594c821fbSChao Yu if (!test_bit_le(nid_ofs, 297694c821fbSChao Yu nm_i->free_nid_bitmap[nat_ofs])) 297794c821fbSChao Yu valid++; 297894c821fbSChao Yu } 297994c821fbSChao Yu 298094c821fbSChao Yu __update_nat_bits(nm_i, nat_ofs, valid); 298194c821fbSChao Yu } 298294c821fbSChao Yu 2983e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 298422ad0b6aSJaegeuk Kim } 298522ad0b6aSJaegeuk Kim 2986edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 298722ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2988309cc2b6SJaegeuk Kim { 2989309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2990b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2991309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2992309cc2b6SJaegeuk Kim bool to_journal = true; 2993309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2994309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2995309cc2b6SJaegeuk Kim struct page *page = NULL; 2996aec71382SChao Yu 2997aec71382SChao Yu /* 2998aec71382SChao Yu * there are two steps to flush nat entries: 2999aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 3000aec71382SChao Yu * #2, flush nat entries to nat page. 3001aec71382SChao Yu */ 300294c821fbSChao Yu if ((cpc->reason & CP_UMOUNT) || 300322ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 3004aec71382SChao Yu to_journal = false; 3005aec71382SChao Yu 3006aec71382SChao Yu if (to_journal) { 3007b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 3008aec71382SChao Yu } else { 3009e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 3010edc55aafSJaegeuk Kim if (IS_ERR(page)) 3011edc55aafSJaegeuk Kim return PTR_ERR(page); 3012edc55aafSJaegeuk Kim 3013e05df3b1SJaegeuk Kim nat_blk = page_address(page); 30149850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 3015e05df3b1SJaegeuk Kim } 3016e05df3b1SJaegeuk Kim 3017aec71382SChao Yu /* flush dirty nats in nat entry set */ 3018309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 3019aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 3020aec71382SChao Yu nid_t nid = nat_get_nid(ne); 3021aec71382SChao Yu int offset; 3022aec71382SChao Yu 3023febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 3024309cc2b6SJaegeuk Kim 3025aec71382SChao Yu if (to_journal) { 30264d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 3027aec71382SChao Yu NAT_JOURNAL, nid, 1); 30289850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 3029dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 3030dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 3031aec71382SChao Yu } else { 3032aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 3033aec71382SChao Yu } 3034aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 303588bd02c9SJaegeuk Kim nat_reset_flag(ne); 30360b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 303704d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 30385921aaa1SLiFan add_free_nid(sbi, nid, false, true); 30394ac91242SChao Yu } else { 30404ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 3041346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 304204d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 304304d47e67SChao Yu } 3044e05df3b1SJaegeuk Kim } 3045aec71382SChao Yu 304622ad0b6aSJaegeuk Kim if (to_journal) { 3047b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 304822ad0b6aSJaegeuk Kim } else { 304994c821fbSChao Yu update_nat_bits(sbi, start_nid, page); 3050e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 305122ad0b6aSJaegeuk Kim } 3052aec71382SChao Yu 305359c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 305459c9081bSYunlei He if (!set->entry_cnt) { 3055309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 3056309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 3057309cc2b6SJaegeuk Kim } 3058edc55aafSJaegeuk Kim return 0; 305959c9081bSYunlei He } 3060aec71382SChao Yu 3061309cc2b6SJaegeuk Kim /* 3062309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 3063309cc2b6SJaegeuk Kim */ 3064edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 3065309cc2b6SJaegeuk Kim { 3066309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3067309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 3068b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 30697aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3070309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 3071309cc2b6SJaegeuk Kim unsigned int found; 3072309cc2b6SJaegeuk Kim nid_t set_idx = 0; 3073309cc2b6SJaegeuk Kim LIST_HEAD(sets); 3074edc55aafSJaegeuk Kim int err = 0; 3075309cc2b6SJaegeuk Kim 3076a95ba66aSJaegeuk Kim /* 3077a95ba66aSJaegeuk Kim * during unmount, let's flush nat_bits before checking 3078a95ba66aSJaegeuk Kim * nat_cnt[DIRTY_NAT]. 3079a95ba66aSJaegeuk Kim */ 308094c821fbSChao Yu if (cpc->reason & CP_UMOUNT) { 3081e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 30827f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 3083e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 30847f2ecdd8SJaegeuk Kim } 30857f2ecdd8SJaegeuk Kim 3086a95ba66aSJaegeuk Kim if (!nm_i->nat_cnt[DIRTY_NAT]) 3087edc55aafSJaegeuk Kim return 0; 3088a5131193SJaegeuk Kim 3089e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3090a5131193SJaegeuk Kim 3091309cc2b6SJaegeuk Kim /* 3092309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 3093309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 3094309cc2b6SJaegeuk Kim * into nat entry set. 3095309cc2b6SJaegeuk Kim */ 309694c821fbSChao Yu if (cpc->reason & CP_UMOUNT || 3097a95ba66aSJaegeuk Kim !__has_cursum_space(journal, 3098a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL)) 3099309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 3100309cc2b6SJaegeuk Kim 3101309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 31027aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 3103309cc2b6SJaegeuk Kim unsigned idx; 31045f029c04SYi Zhuang 3105309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 3106309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 3107309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 3108dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 3109309cc2b6SJaegeuk Kim } 3110309cc2b6SJaegeuk Kim 3111309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 3112edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 3113edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 3114edc55aafSJaegeuk Kim if (err) 3115edc55aafSJaegeuk Kim break; 3116edc55aafSJaegeuk Kim } 3117309cc2b6SJaegeuk Kim 3118e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 311959c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 3120edc55aafSJaegeuk Kim 3121edc55aafSJaegeuk Kim return err; 3122e05df3b1SJaegeuk Kim } 3123e05df3b1SJaegeuk Kim 312422ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 312522ad0b6aSJaegeuk Kim { 312622ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 312722ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 312822ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 312922ad0b6aSJaegeuk Kim unsigned int i; 313022ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 313122ad0b6aSJaegeuk Kim block_t nat_bits_addr; 313222ad0b6aSJaegeuk Kim 3133df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 31340b6d4ca0SEric Biggers nm_i->nat_bits = f2fs_kvzalloc(sbi, 3135acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 313622ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 313722ad0b6aSJaegeuk Kim return -ENOMEM; 313822ad0b6aSJaegeuk Kim 313994c821fbSChao Yu nm_i->full_nat_bits = nm_i->nat_bits + 8; 314094c821fbSChao Yu nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 314194c821fbSChao Yu 314294c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 314394c821fbSChao Yu return 0; 314494c821fbSChao Yu 314522ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 314622ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 314722ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 31487735730dSChao Yu struct page *page; 31497735730dSChao Yu 31507735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 31513b30eb19SChao Yu if (IS_ERR(page)) 31527735730dSChao Yu return PTR_ERR(page); 315322ad0b6aSJaegeuk Kim 315422ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 315522ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 315622ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 315722ad0b6aSJaegeuk Kim } 315822ad0b6aSJaegeuk Kim 3159ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 316022ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 316194c821fbSChao Yu clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG); 316294c821fbSChao Yu f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)", 316394c821fbSChao Yu cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits)); 316422ad0b6aSJaegeuk Kim return 0; 316522ad0b6aSJaegeuk Kim } 316622ad0b6aSJaegeuk Kim 3167dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 316822ad0b6aSJaegeuk Kim return 0; 316922ad0b6aSJaegeuk Kim } 317022ad0b6aSJaegeuk Kim 3171bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 31727041d5d2SChao Yu { 31737041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31747041d5d2SChao Yu unsigned int i = 0; 31757041d5d2SChao Yu nid_t nid, last_nid; 31767041d5d2SChao Yu 317794c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 31787041d5d2SChao Yu return; 31797041d5d2SChao Yu 31807041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31817041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 31827041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31837041d5d2SChao Yu break; 31847041d5d2SChao Yu 31857041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31867041d5d2SChao Yu 31877041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 3188f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 31897041d5d2SChao Yu 3190346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 31917041d5d2SChao Yu for (; nid < last_nid; nid++) 3192346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 3193346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 31947041d5d2SChao Yu } 31957041d5d2SChao Yu 31967041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31977041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 31987041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31997041d5d2SChao Yu break; 32007041d5d2SChao Yu 32017041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 32027041d5d2SChao Yu } 32037041d5d2SChao Yu } 32047041d5d2SChao Yu 3205e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3206e05df3b1SJaegeuk Kim { 3207e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3208e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3209e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 321022ad0b6aSJaegeuk Kim unsigned int nat_segs; 321122ad0b6aSJaegeuk Kim int err; 3212e05df3b1SJaegeuk Kim 3213e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3214e05df3b1SJaegeuk Kim 3215e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3216e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 321722ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 321822ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 32197ee0eeabSJaegeuk Kim 3220b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 322104d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 322227cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 32239a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 32249a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3225cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3226ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 32272304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 322847c8ebccSJaegeuk Kim nm_i->max_rf_node_blocks = DEF_RF_NODE_BLOCKS; 3229e05df3b1SJaegeuk Kim 32308a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 32319a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3232769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3233769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3234e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 323522969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3236e05df3b1SJaegeuk Kim 3237e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3238b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3239e4544b63STim Murray init_f2fs_rwsem(&nm_i->nat_tree_lock); 3240e05df3b1SJaegeuk Kim 3241e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 324279b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3243e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 324479b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 324579b5793bSAlexandru Gheorghiu GFP_KERNEL); 324679b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 324779b5793bSAlexandru Gheorghiu return -ENOMEM; 3248599a09b2SChao Yu 324922ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 325022ad0b6aSJaegeuk Kim if (err) 325122ad0b6aSJaegeuk Kim return err; 325222ad0b6aSJaegeuk Kim 3253599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3254599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3255599a09b2SChao Yu GFP_KERNEL); 3256599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3257599a09b2SChao Yu return -ENOMEM; 3258599a09b2SChao Yu #endif 3259599a09b2SChao Yu 3260e05df3b1SJaegeuk Kim return 0; 3261e05df3b1SJaegeuk Kim } 3262e05df3b1SJaegeuk Kim 32639f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 32644ac91242SChao Yu { 32654ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3266bb1105e4SJaegeuk Kim int i; 32674ac91242SChao Yu 3268026f0507SKees Cook nm_i->free_nid_bitmap = 32690b6d4ca0SEric Biggers f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *), 3270026f0507SKees Cook nm_i->nat_blocks), 3271026f0507SKees Cook GFP_KERNEL); 32724ac91242SChao Yu if (!nm_i->free_nid_bitmap) 32734ac91242SChao Yu return -ENOMEM; 32744ac91242SChao Yu 3275bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3276bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3277e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 327868c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3279bb1105e4SJaegeuk Kim return -ENOMEM; 3280bb1105e4SJaegeuk Kim } 3281bb1105e4SJaegeuk Kim 3282628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 32834ac91242SChao Yu GFP_KERNEL); 32844ac91242SChao Yu if (!nm_i->nat_block_bitmap) 32854ac91242SChao Yu return -ENOMEM; 3286586d1492SChao Yu 32879d2a789cSKees Cook nm_i->free_nid_count = 32889d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 32899d2a789cSKees Cook nm_i->nat_blocks), 32909d2a789cSKees Cook GFP_KERNEL); 3291586d1492SChao Yu if (!nm_i->free_nid_count) 3292586d1492SChao Yu return -ENOMEM; 32934ac91242SChao Yu return 0; 32944ac91242SChao Yu } 32954ac91242SChao Yu 32964d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3297e05df3b1SJaegeuk Kim { 3298e05df3b1SJaegeuk Kim int err; 3299e05df3b1SJaegeuk Kim 3300acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3301acbf054dSChao Yu GFP_KERNEL); 3302e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3303e05df3b1SJaegeuk Kim return -ENOMEM; 3304e05df3b1SJaegeuk Kim 3305e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3306e05df3b1SJaegeuk Kim if (err) 3307e05df3b1SJaegeuk Kim return err; 3308e05df3b1SJaegeuk Kim 33094ac91242SChao Yu err = init_free_nid_cache(sbi); 33104ac91242SChao Yu if (err) 33114ac91242SChao Yu return err; 33124ac91242SChao Yu 33137041d5d2SChao Yu /* load free nid status from nat_bits table */ 33147041d5d2SChao Yu load_free_nid_bitmap(sbi); 33157041d5d2SChao Yu 3316e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3317e05df3b1SJaegeuk Kim } 3318e05df3b1SJaegeuk Kim 33194d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3320e05df3b1SJaegeuk Kim { 3321e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3322e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3323e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 33247aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3325e05df3b1SJaegeuk Kim nid_t nid = 0; 3326e05df3b1SJaegeuk Kim unsigned int found; 3327e05df3b1SJaegeuk Kim 3328e05df3b1SJaegeuk Kim if (!nm_i) 3329e05df3b1SJaegeuk Kim return; 3330e05df3b1SJaegeuk Kim 3331e05df3b1SJaegeuk Kim /* destroy free nid list */ 3332b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 33339a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3334a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3335b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3336cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3337b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3338e05df3b1SJaegeuk Kim } 33399a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 33409a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 33419a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3342b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3343e05df3b1SJaegeuk Kim 3344e05df3b1SJaegeuk Kim /* destroy nat cache */ 3345e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3346e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3347e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3348e05df3b1SJaegeuk Kim unsigned idx; 33497aed0d45SJaegeuk Kim 3350b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 335122969158SChao Yu for (idx = 0; idx < found; idx++) { 335222969158SChao Yu spin_lock(&nm_i->nat_list_lock); 335322969158SChao Yu list_del(&natvec[idx]->list); 335422969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 335522969158SChao Yu 3356b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3357e05df3b1SJaegeuk Kim } 335822969158SChao Yu } 3359a95ba66aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]); 33607aed0d45SJaegeuk Kim 33617aed0d45SJaegeuk Kim /* destroy nat set cache */ 33627aed0d45SJaegeuk Kim nid = 0; 33637aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 33647aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 33657aed0d45SJaegeuk Kim unsigned idx; 33667aed0d45SJaegeuk Kim 33677aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 33687aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 33697aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 33707aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 33717aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 33727aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 33737aed0d45SJaegeuk Kim } 33747aed0d45SJaegeuk Kim } 3375e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 3376e05df3b1SJaegeuk Kim 33774ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3378bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3379bb1105e4SJaegeuk Kim int i; 3380bb1105e4SJaegeuk Kim 3381bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3382bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 33835222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3384bb1105e4SJaegeuk Kim } 3385586d1492SChao Yu kvfree(nm_i->free_nid_count); 33864ac91242SChao Yu 33875222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 33885222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3389599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 33905222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3391599a09b2SChao Yu #endif 3392e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3393c8eb7024SChao Yu kfree(nm_i); 3394e05df3b1SJaegeuk Kim } 3395e05df3b1SJaegeuk Kim 33964d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3397e05df3b1SJaegeuk Kim { 339898510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3399e8512d2eSGu Zheng sizeof(struct nat_entry)); 3400e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3401aec71382SChao Yu goto fail; 3402e05df3b1SJaegeuk Kim 340398510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3404e8512d2eSGu Zheng sizeof(struct free_nid)); 3405aec71382SChao Yu if (!free_nid_slab) 3406ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3407aec71382SChao Yu 340898510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3409aec71382SChao Yu sizeof(struct nat_entry_set)); 3410aec71382SChao Yu if (!nat_entry_set_slab) 3411ce3e6d25SMarkus Elfring goto destroy_free_nid; 341250fa53ecSChao Yu 341398510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 341450fa53ecSChao Yu sizeof(struct fsync_node_entry)); 341550fa53ecSChao Yu if (!fsync_node_entry_slab) 341650fa53ecSChao Yu goto destroy_nat_entry_set; 3417e05df3b1SJaegeuk Kim return 0; 3418aec71382SChao Yu 341950fa53ecSChao Yu destroy_nat_entry_set: 342050fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3421ce3e6d25SMarkus Elfring destroy_free_nid: 3422aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3423ce3e6d25SMarkus Elfring destroy_nat_entry: 3424aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3425aec71382SChao Yu fail: 3426aec71382SChao Yu return -ENOMEM; 3427e05df3b1SJaegeuk Kim } 3428e05df3b1SJaegeuk Kim 34294d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3430e05df3b1SJaegeuk Kim { 343150fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3432aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3433e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3434e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3435e05df3b1SJaegeuk Kim } 3436