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> 11*4034247aSNeilBrown #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 385b873b798SJaegeuk Kim 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 } 392b873b798SJaegeuk Kim 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 402b873b798SJaegeuk Kim 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; 406b873b798SJaegeuk Kim 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 416b873b798SJaegeuk Kim 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; 422b873b798SJaegeuk Kim 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 43332410577SChao Yu new = __alloc_nat_entry(sbi, nid, false); 43412f9ef37SYunlei He if (!new) 43512f9ef37SYunlei He return; 43612f9ef37SYunlei He 43712f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 438e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 43912f9ef37SYunlei He if (!e) 44012f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 44112f9ef37SYunlei He else 4420c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4430c0b471eSEric Biggers nat_get_blkaddr(e) != 4440c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4451515aef0SChao Yu nat_get_version(e) != ne->version); 44612f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 44712f9ef37SYunlei He if (e != new) 44812f9ef37SYunlei He __free_nat_entry(new); 449e05df3b1SJaegeuk Kim } 450e05df3b1SJaegeuk Kim 451e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 452479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 453e05df3b1SJaegeuk Kim { 454e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 455e05df3b1SJaegeuk Kim struct nat_entry *e; 45632410577SChao Yu struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true); 4579be32d72SJaegeuk Kim 458b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 459e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 460e05df3b1SJaegeuk Kim if (!e) { 46112f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4625c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 464e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 465e05df3b1SJaegeuk Kim /* 466e05df3b1SJaegeuk Kim * when nid is reallocated, 467e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 468e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 469e05df3b1SJaegeuk Kim */ 4705c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4719850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 472e05df3b1SJaegeuk Kim } 47312f9ef37SYunlei He /* let's free early to reduce memory consumption */ 47412f9ef37SYunlei He if (e != new) 47512f9ef37SYunlei He __free_nat_entry(new); 476e05df3b1SJaegeuk Kim 477e05df3b1SJaegeuk Kim /* sanity check */ 4789850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4799850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 480e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 482e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 48393770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 484e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 485e05df3b1SJaegeuk Kim 486e1c42045Sarter97 /* increment version no as node is removed */ 487e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 488e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 4895f029c04SYi Zhuang 490e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 491e05df3b1SJaegeuk Kim } 492e05df3b1SJaegeuk Kim 493e05df3b1SJaegeuk Kim /* change address */ 494e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 49593770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 49688bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 497e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 498479f40c4SJaegeuk Kim 499479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 500d5b692b7SChao Yu if (ni->nid != ni->ino) 501479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 50288bd02c9SJaegeuk Kim if (e) { 50388bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 50488bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 50588bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 50688bd02c9SJaegeuk Kim } 507b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 508e05df3b1SJaegeuk Kim } 509e05df3b1SJaegeuk Kim 5104d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 511e05df3b1SJaegeuk Kim { 512e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 5131b38dc8eSJaegeuk Kim int nr = nr_shrink; 514e05df3b1SJaegeuk Kim 515b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 516b873b798SJaegeuk Kim return 0; 517e05df3b1SJaegeuk Kim 51822969158SChao Yu spin_lock(&nm_i->nat_list_lock); 51922969158SChao Yu while (nr_shrink) { 520e05df3b1SJaegeuk Kim struct nat_entry *ne; 52122969158SChao Yu 52222969158SChao Yu if (list_empty(&nm_i->nat_entries)) 52322969158SChao Yu break; 52422969158SChao Yu 525e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 526e05df3b1SJaegeuk Kim struct nat_entry, list); 52722969158SChao Yu list_del(&ne->list); 52822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 52922969158SChao Yu 530e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 531e05df3b1SJaegeuk Kim nr_shrink--; 53222969158SChao Yu 53322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 534e05df3b1SJaegeuk Kim } 53522969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53622969158SChao Yu 537b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 5381b38dc8eSJaegeuk Kim return nr - nr_shrink; 539e05df3b1SJaegeuk Kim } 540e05df3b1SJaegeuk Kim 5417735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 5424d57b86dSChao Yu struct node_info *ni) 543e05df3b1SJaegeuk Kim { 544e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 545e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 546b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 547e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 548e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 549e05df3b1SJaegeuk Kim struct page *page = NULL; 550e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 551e05df3b1SJaegeuk Kim struct nat_entry *e; 55266a82d1fSYunlei He pgoff_t index; 55393770ab7SChao Yu block_t blkaddr; 554e05df3b1SJaegeuk Kim int i; 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim ni->nid = nid; 5572eeb0dceSJaegeuk Kim retry: 558e05df3b1SJaegeuk Kim /* Check nat cache */ 559b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 560e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 561e05df3b1SJaegeuk Kim if (e) { 562e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 563e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 564e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 565b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5667735730dSChao Yu return 0; 5671515aef0SChao Yu } 568e05df3b1SJaegeuk Kim 5692eeb0dceSJaegeuk Kim /* 5702eeb0dceSJaegeuk Kim * Check current segment summary by trying to grab journal_rwsem first. 5712eeb0dceSJaegeuk Kim * This sem is on the critical path on the checkpoint requiring the above 5722eeb0dceSJaegeuk Kim * nat_tree_lock. Therefore, we should retry, if we failed to grab here 5732eeb0dceSJaegeuk Kim * while not bothering checkpoint. 5742eeb0dceSJaegeuk Kim */ 5752eeb0dceSJaegeuk Kim if (!rwsem_is_locked(&sbi->cp_global_sem)) { 576b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5772eeb0dceSJaegeuk Kim } else if (!down_read_trylock(&curseg->journal_rwsem)) { 5782eeb0dceSJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5792eeb0dceSJaegeuk Kim goto retry; 5802eeb0dceSJaegeuk Kim } 5812eeb0dceSJaegeuk Kim 5824d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 583e05df3b1SJaegeuk Kim if (i >= 0) { 584dfc08a12SChao Yu ne = nat_in_journal(journal, i); 585e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 586e05df3b1SJaegeuk Kim } 587b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 58866a82d1fSYunlei He if (i >= 0) { 58966a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 590e05df3b1SJaegeuk Kim goto cache; 59166a82d1fSYunlei He } 592e05df3b1SJaegeuk Kim 593e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 59466a82d1fSYunlei He index = current_nat_addr(sbi, nid); 59566a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 59666a82d1fSYunlei He 5974d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5987735730dSChao Yu if (IS_ERR(page)) 5997735730dSChao Yu return PTR_ERR(page); 6007735730dSChao Yu 601e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 602e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 603e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 604e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 605e05df3b1SJaegeuk Kim cache: 60693770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 60793770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 60893770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 60993770ab7SChao Yu return -EFAULT; 61093770ab7SChao Yu 611e05df3b1SJaegeuk Kim /* cache nat entry */ 6121515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 6137735730dSChao Yu return 0; 614e05df3b1SJaegeuk Kim } 615e05df3b1SJaegeuk Kim 61679344efbSJaegeuk Kim /* 61779344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 61879344efbSJaegeuk Kim */ 6194d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 62079344efbSJaegeuk Kim { 62179344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 62279344efbSJaegeuk Kim struct blk_plug plug; 62379344efbSJaegeuk Kim int i, end; 62479344efbSJaegeuk Kim nid_t nid; 62579344efbSJaegeuk Kim 62679344efbSJaegeuk Kim blk_start_plug(&plug); 62779344efbSJaegeuk Kim 62879344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 62979344efbSJaegeuk Kim end = start + n; 63079344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 63179344efbSJaegeuk Kim for (i = start; i < end; i++) { 63279344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6334d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 63479344efbSJaegeuk Kim } 63579344efbSJaegeuk Kim 63679344efbSJaegeuk Kim blk_finish_plug(&plug); 63779344efbSJaegeuk Kim } 63879344efbSJaegeuk Kim 6394d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6403cf45747SChao Yu { 6413cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 642d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 643d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 644d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6453cf45747SChao Yu int cur_level = dn->cur_level; 6463cf45747SChao Yu int max_level = dn->max_level; 6473cf45747SChao Yu pgoff_t base = 0; 6483cf45747SChao Yu 6493cf45747SChao Yu if (!dn->max_level) 6503cf45747SChao Yu return pgofs + 1; 6513cf45747SChao Yu 6523cf45747SChao Yu while (max_level-- > cur_level) 6533cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6543cf45747SChao Yu 6553cf45747SChao Yu switch (dn->max_level) { 6563cf45747SChao Yu case 3: 6573cf45747SChao Yu base += 2 * indirect_blks; 658df561f66SGustavo A. R. Silva fallthrough; 6593cf45747SChao Yu case 2: 6603cf45747SChao Yu base += 2 * direct_blks; 661df561f66SGustavo A. R. Silva fallthrough; 6623cf45747SChao Yu case 1: 6633cf45747SChao Yu base += direct_index; 6643cf45747SChao Yu break; 6653cf45747SChao Yu default: 6663cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6673cf45747SChao Yu } 6683cf45747SChao Yu 6693cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6703cf45747SChao Yu } 6713cf45747SChao Yu 6720a8165d7SJaegeuk Kim /* 673e05df3b1SJaegeuk Kim * The maximum depth is four. 674e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 675e05df3b1SJaegeuk Kim */ 67681ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 677de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 678e05df3b1SJaegeuk Kim { 67981ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 680d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 681e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 682d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 683e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 684e05df3b1SJaegeuk Kim int n = 0; 685e05df3b1SJaegeuk Kim int level = 0; 686e05df3b1SJaegeuk Kim 687e05df3b1SJaegeuk Kim noffset[0] = 0; 688e05df3b1SJaegeuk Kim 689e05df3b1SJaegeuk Kim if (block < direct_index) { 69025c0a6e5SNamjae Jeon offset[n] = block; 691e05df3b1SJaegeuk Kim goto got; 692e05df3b1SJaegeuk Kim } 693e05df3b1SJaegeuk Kim block -= direct_index; 694e05df3b1SJaegeuk Kim if (block < direct_blks) { 695e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 696e05df3b1SJaegeuk Kim noffset[n] = 1; 69725c0a6e5SNamjae Jeon offset[n] = block; 698e05df3b1SJaegeuk Kim level = 1; 699e05df3b1SJaegeuk Kim goto got; 700e05df3b1SJaegeuk Kim } 701e05df3b1SJaegeuk Kim block -= direct_blks; 702e05df3b1SJaegeuk Kim if (block < direct_blks) { 703e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 704e05df3b1SJaegeuk Kim noffset[n] = 2; 70525c0a6e5SNamjae Jeon offset[n] = block; 706e05df3b1SJaegeuk Kim level = 1; 707e05df3b1SJaegeuk Kim goto got; 708e05df3b1SJaegeuk Kim } 709e05df3b1SJaegeuk Kim block -= direct_blks; 710e05df3b1SJaegeuk Kim if (block < indirect_blks) { 711e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 712e05df3b1SJaegeuk Kim noffset[n] = 3; 713e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 714e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 71525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 716e05df3b1SJaegeuk Kim level = 2; 717e05df3b1SJaegeuk Kim goto got; 718e05df3b1SJaegeuk Kim } 719e05df3b1SJaegeuk Kim block -= indirect_blks; 720e05df3b1SJaegeuk Kim if (block < indirect_blks) { 721e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 722e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 723e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 724e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 72525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 726e05df3b1SJaegeuk Kim level = 2; 727e05df3b1SJaegeuk Kim goto got; 728e05df3b1SJaegeuk Kim } 729e05df3b1SJaegeuk Kim block -= indirect_blks; 730e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 731e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 732e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 733e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 734e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 735e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 736e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 737e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 738e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 739e05df3b1SJaegeuk Kim offset[n - 1]; 74025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 741e05df3b1SJaegeuk Kim level = 3; 742e05df3b1SJaegeuk Kim goto got; 743e05df3b1SJaegeuk Kim } else { 744adb6dc19SJaegeuk Kim return -E2BIG; 745e05df3b1SJaegeuk Kim } 746e05df3b1SJaegeuk Kim got: 747e05df3b1SJaegeuk Kim return level; 748e05df3b1SJaegeuk Kim } 749e05df3b1SJaegeuk Kim 750e05df3b1SJaegeuk Kim /* 751e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7524f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7537a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 754e05df3b1SJaegeuk Kim */ 7554d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 756e05df3b1SJaegeuk Kim { 7574081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 758e05df3b1SJaegeuk Kim struct page *npage[4]; 759f1a3b98eSJaegeuk Kim struct page *parent = NULL; 760e05df3b1SJaegeuk Kim int offset[4]; 761e05df3b1SJaegeuk Kim unsigned int noffset[4]; 762e05df3b1SJaegeuk Kim nid_t nids[4]; 7633cf45747SChao Yu int level, i = 0; 764e05df3b1SJaegeuk Kim int err = 0; 765e05df3b1SJaegeuk Kim 76681ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 767adb6dc19SJaegeuk Kim if (level < 0) 768adb6dc19SJaegeuk Kim return level; 769e05df3b1SJaegeuk Kim 770e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7711646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7721646cfacSJaegeuk Kim 7731646cfacSJaegeuk Kim if (!npage[0]) { 7744d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 775e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 776e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7771646cfacSJaegeuk Kim } 778f1a3b98eSJaegeuk Kim 779f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 780f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 78176629165SJaegeuk Kim err = -ENOENT; 782f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 783f1a3b98eSJaegeuk Kim goto release_out; 784f1a3b98eSJaegeuk Kim } 785f1a3b98eSJaegeuk Kim 786e05df3b1SJaegeuk Kim parent = npage[0]; 78752c2db3fSChangman Lee if (level != 0) 788e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 789e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 790e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 791e05df3b1SJaegeuk Kim 792e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 793e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 794e05df3b1SJaegeuk Kim bool done = false; 795e05df3b1SJaegeuk Kim 796266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 797e05df3b1SJaegeuk Kim /* alloc new node */ 7984d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 799e05df3b1SJaegeuk Kim err = -ENOSPC; 800e05df3b1SJaegeuk Kim goto release_pages; 801e05df3b1SJaegeuk Kim } 802e05df3b1SJaegeuk Kim 803e05df3b1SJaegeuk Kim dn->nid = nids[i]; 8044d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 805e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 8064d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 807e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 808e05df3b1SJaegeuk Kim goto release_pages; 809e05df3b1SJaegeuk Kim } 810e05df3b1SJaegeuk Kim 811e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 8124d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 813e05df3b1SJaegeuk Kim done = true; 814266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 8154d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 816e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 817e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 818e05df3b1SJaegeuk Kim goto release_pages; 819e05df3b1SJaegeuk Kim } 820e05df3b1SJaegeuk Kim done = true; 821e05df3b1SJaegeuk Kim } 822e05df3b1SJaegeuk Kim if (i == 1) { 823e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 824e05df3b1SJaegeuk Kim unlock_page(parent); 825e05df3b1SJaegeuk Kim } else { 826e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 827e05df3b1SJaegeuk Kim } 828e05df3b1SJaegeuk Kim 829e05df3b1SJaegeuk Kim if (!done) { 8304d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 831e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 832e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 833e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 834e05df3b1SJaegeuk Kim goto release_out; 835e05df3b1SJaegeuk Kim } 836e05df3b1SJaegeuk Kim } 837e05df3b1SJaegeuk Kim if (i < level) { 838e05df3b1SJaegeuk Kim parent = npage[i]; 839e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 840e05df3b1SJaegeuk Kim } 841e05df3b1SJaegeuk Kim } 842e05df3b1SJaegeuk Kim dn->nid = nids[level]; 843e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 844e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 845a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 84694afd6d6SChao Yu 84794afd6d6SChao Yu if (is_inode_flag_set(dn->inode, FI_COMPRESSED_FILE) && 84894afd6d6SChao Yu f2fs_sb_has_readonly(sbi)) { 84994afd6d6SChao Yu unsigned int c_len = f2fs_cluster_blocks_are_contiguous(dn); 85094afd6d6SChao Yu block_t blkaddr; 85194afd6d6SChao Yu 85294afd6d6SChao Yu if (!c_len) 85394afd6d6SChao Yu goto out; 85494afd6d6SChao Yu 85594afd6d6SChao Yu blkaddr = f2fs_data_blkaddr(dn); 85694afd6d6SChao Yu if (blkaddr == COMPRESS_ADDR) 85794afd6d6SChao Yu blkaddr = data_blkaddr(dn->inode, dn->node_page, 85894afd6d6SChao Yu dn->ofs_in_node + 1); 85994afd6d6SChao Yu 86094afd6d6SChao Yu f2fs_update_extent_tree_range_compressed(dn->inode, 86194afd6d6SChao Yu index, blkaddr, 86294afd6d6SChao Yu F2FS_I(dn->inode)->i_cluster_size, 86394afd6d6SChao Yu c_len); 86494afd6d6SChao Yu } 86594afd6d6SChao Yu out: 866e05df3b1SJaegeuk Kim return 0; 867e05df3b1SJaegeuk Kim 868e05df3b1SJaegeuk Kim release_pages: 869e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 870e05df3b1SJaegeuk Kim if (i > 1) 871e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 872e05df3b1SJaegeuk Kim release_out: 873e05df3b1SJaegeuk Kim dn->inode_page = NULL; 874e05df3b1SJaegeuk Kim dn->node_page = NULL; 8753cf45747SChao Yu if (err == -ENOENT) { 8763cf45747SChao Yu dn->cur_level = i; 8773cf45747SChao Yu dn->max_level = level; 8780a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8793cf45747SChao Yu } 880e05df3b1SJaegeuk Kim return err; 881e05df3b1SJaegeuk Kim } 882e05df3b1SJaegeuk Kim 8837735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 884e05df3b1SJaegeuk Kim { 8854081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 886e05df3b1SJaegeuk Kim struct node_info ni; 8877735730dSChao Yu int err; 8880ea295ddSPan Bian pgoff_t index; 889e05df3b1SJaegeuk Kim 8907735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8917735730dSChao Yu if (err) 8927735730dSChao Yu return err; 893e05df3b1SJaegeuk Kim 894e05df3b1SJaegeuk Kim /* Deallocate node address */ 8954d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 896000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 897479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 898e05df3b1SJaegeuk Kim 899e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 9004d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 901e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 9020f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 903e05df3b1SJaegeuk Kim } 904000519f2SChao Yu 905e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 906caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 907e05df3b1SJaegeuk Kim 9080ea295ddSPan Bian index = dn->node_page->index; 909e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 910bf39c00aSJaegeuk Kim 911bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 9120ea295ddSPan Bian index, index); 913bf39c00aSJaegeuk Kim 914e05df3b1SJaegeuk Kim dn->node_page = NULL; 91551dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 9167735730dSChao Yu 9177735730dSChao Yu return 0; 918e05df3b1SJaegeuk Kim } 919e05df3b1SJaegeuk Kim 920e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 921e05df3b1SJaegeuk Kim { 922e05df3b1SJaegeuk Kim struct page *page; 9237735730dSChao Yu int err; 924e05df3b1SJaegeuk Kim 925e05df3b1SJaegeuk Kim if (dn->nid == 0) 926e05df3b1SJaegeuk Kim return 1; 927e05df3b1SJaegeuk Kim 928e05df3b1SJaegeuk Kim /* get direct node */ 9294d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 93045586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 931e05df3b1SJaegeuk Kim return 1; 932e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 933e05df3b1SJaegeuk Kim return PTR_ERR(page); 934e05df3b1SJaegeuk Kim 935e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 936e05df3b1SJaegeuk Kim dn->node_page = page; 937e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 9384d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 9397735730dSChao Yu err = truncate_node(dn); 9407735730dSChao Yu if (err) 9417735730dSChao Yu return err; 9427735730dSChao Yu 943e05df3b1SJaegeuk Kim return 1; 944e05df3b1SJaegeuk Kim } 945e05df3b1SJaegeuk Kim 946e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 947e05df3b1SJaegeuk Kim int ofs, int depth) 948e05df3b1SJaegeuk Kim { 949e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 950e05df3b1SJaegeuk Kim struct page *page; 951e05df3b1SJaegeuk Kim struct f2fs_node *rn; 952e05df3b1SJaegeuk Kim nid_t child_nid; 953e05df3b1SJaegeuk Kim unsigned int child_nofs; 954e05df3b1SJaegeuk Kim int freed = 0; 955e05df3b1SJaegeuk Kim int i, ret; 956e05df3b1SJaegeuk Kim 957e05df3b1SJaegeuk Kim if (dn->nid == 0) 958e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 959e05df3b1SJaegeuk Kim 96051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 96151dd6249SNamjae Jeon 9624d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 96351dd6249SNamjae Jeon if (IS_ERR(page)) { 96451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 965e05df3b1SJaegeuk Kim return PTR_ERR(page); 96651dd6249SNamjae Jeon } 967e05df3b1SJaegeuk Kim 9684d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 96979344efbSJaegeuk Kim 97045590710SGu Zheng rn = F2FS_NODE(page); 971e05df3b1SJaegeuk Kim if (depth < 3) { 972e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 973e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 974e05df3b1SJaegeuk Kim if (child_nid == 0) 975e05df3b1SJaegeuk Kim continue; 976e05df3b1SJaegeuk Kim rdn.nid = child_nid; 977e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 978e05df3b1SJaegeuk Kim if (ret < 0) 979e05df3b1SJaegeuk Kim goto out_err; 98012719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 98193bae099SJaegeuk Kim dn->node_changed = true; 982e05df3b1SJaegeuk Kim } 983e05df3b1SJaegeuk Kim } else { 984e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 985e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 986e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 987e05df3b1SJaegeuk Kim if (child_nid == 0) { 988e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 989e05df3b1SJaegeuk Kim continue; 990e05df3b1SJaegeuk Kim } 991e05df3b1SJaegeuk Kim rdn.nid = child_nid; 992e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 993e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 99412719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 99593bae099SJaegeuk Kim dn->node_changed = true; 996e05df3b1SJaegeuk Kim child_nofs += ret; 997e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 998e05df3b1SJaegeuk Kim goto out_err; 999e05df3b1SJaegeuk Kim } 1000e05df3b1SJaegeuk Kim } 1001e05df3b1SJaegeuk Kim freed = child_nofs; 1002e05df3b1SJaegeuk Kim } 1003e05df3b1SJaegeuk Kim 1004e05df3b1SJaegeuk Kim if (!ofs) { 1005e05df3b1SJaegeuk Kim /* remove current indirect node */ 1006e05df3b1SJaegeuk Kim dn->node_page = page; 10077735730dSChao Yu ret = truncate_node(dn); 10087735730dSChao Yu if (ret) 10097735730dSChao Yu goto out_err; 1010e05df3b1SJaegeuk Kim freed++; 1011e05df3b1SJaegeuk Kim } else { 1012e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1013e05df3b1SJaegeuk Kim } 101451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 1015e05df3b1SJaegeuk Kim return freed; 1016e05df3b1SJaegeuk Kim 1017e05df3b1SJaegeuk Kim out_err: 1018e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 101951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 1020e05df3b1SJaegeuk Kim return ret; 1021e05df3b1SJaegeuk Kim } 1022e05df3b1SJaegeuk Kim 1023e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 1024e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 1025e05df3b1SJaegeuk Kim { 1026e05df3b1SJaegeuk Kim struct page *pages[2]; 1027e05df3b1SJaegeuk Kim nid_t nid[3]; 1028e05df3b1SJaegeuk Kim nid_t child_nid; 1029e05df3b1SJaegeuk Kim int err = 0; 1030e05df3b1SJaegeuk Kim int i; 1031e05df3b1SJaegeuk Kim int idx = depth - 2; 1032e05df3b1SJaegeuk Kim 1033e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1034e05df3b1SJaegeuk Kim if (!nid[0]) 1035e05df3b1SJaegeuk Kim return 0; 1036e05df3b1SJaegeuk Kim 1037e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1038a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1039e1c42045Sarter97 /* reference count'll be increased */ 10404d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1041e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1042e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1043a225dca3Sshifei10.ge idx = i - 1; 1044e05df3b1SJaegeuk Kim goto fail; 1045e05df3b1SJaegeuk Kim } 1046e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1047e05df3b1SJaegeuk Kim } 1048e05df3b1SJaegeuk Kim 10494d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 105079344efbSJaegeuk Kim 1051e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1052a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1053e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1054e05df3b1SJaegeuk Kim if (!child_nid) 1055e05df3b1SJaegeuk Kim continue; 1056e05df3b1SJaegeuk Kim dn->nid = child_nid; 1057e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1058e05df3b1SJaegeuk Kim if (err < 0) 1059e05df3b1SJaegeuk Kim goto fail; 106012719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 106193bae099SJaegeuk Kim dn->node_changed = true; 1062e05df3b1SJaegeuk Kim } 1063e05df3b1SJaegeuk Kim 1064a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1065e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1066e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10677735730dSChao Yu err = truncate_node(dn); 10687735730dSChao Yu if (err) 10697735730dSChao Yu goto fail; 1070e05df3b1SJaegeuk Kim } else { 1071e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1072e05df3b1SJaegeuk Kim } 1073e05df3b1SJaegeuk Kim offset[idx]++; 1074a225dca3Sshifei10.ge offset[idx + 1] = 0; 1075a225dca3Sshifei10.ge idx--; 1076e05df3b1SJaegeuk Kim fail: 1077a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1078e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 107951dd6249SNamjae Jeon 108051dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 108151dd6249SNamjae Jeon 1082e05df3b1SJaegeuk Kim return err; 1083e05df3b1SJaegeuk Kim } 1084e05df3b1SJaegeuk Kim 10850a8165d7SJaegeuk Kim /* 1086e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1087e05df3b1SJaegeuk Kim */ 10884d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1089e05df3b1SJaegeuk Kim { 10904081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1091e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1092e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10937dd690c8SJaegeuk Kim unsigned int nofs = 0; 109458bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1095e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1096e05df3b1SJaegeuk Kim struct page *page; 1097e05df3b1SJaegeuk Kim 109851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 109951dd6249SNamjae Jeon 110081ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 11019039d835SYubo Feng if (level < 0) { 11029039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1103adb6dc19SJaegeuk Kim return level; 11049039d835SYubo Feng } 1105ff373558SJaegeuk Kim 11064d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 110751dd6249SNamjae Jeon if (IS_ERR(page)) { 110851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1109e05df3b1SJaegeuk Kim return PTR_ERR(page); 111051dd6249SNamjae Jeon } 1111e05df3b1SJaegeuk Kim 1112e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1113e05df3b1SJaegeuk Kim unlock_page(page); 1114e05df3b1SJaegeuk Kim 111558bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1116e05df3b1SJaegeuk Kim switch (level) { 1117e05df3b1SJaegeuk Kim case 0: 1118e05df3b1SJaegeuk Kim case 1: 1119e05df3b1SJaegeuk Kim nofs = noffset[1]; 1120e05df3b1SJaegeuk Kim break; 1121e05df3b1SJaegeuk Kim case 2: 1122e05df3b1SJaegeuk Kim nofs = noffset[1]; 1123e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1124e05df3b1SJaegeuk Kim goto skip_partial; 112558bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1126e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1127e05df3b1SJaegeuk Kim goto fail; 1128e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1129e05df3b1SJaegeuk Kim break; 1130e05df3b1SJaegeuk Kim case 3: 1131e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1132e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1133e05df3b1SJaegeuk Kim goto skip_partial; 113458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1135e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1136e05df3b1SJaegeuk Kim goto fail; 1137e05df3b1SJaegeuk Kim break; 1138e05df3b1SJaegeuk Kim default: 1139e05df3b1SJaegeuk Kim BUG(); 1140e05df3b1SJaegeuk Kim } 1141e05df3b1SJaegeuk Kim 1142e05df3b1SJaegeuk Kim skip_partial: 1143e05df3b1SJaegeuk Kim while (cont) { 114458bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1145e05df3b1SJaegeuk Kim switch (offset[0]) { 1146e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1147e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1148e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1149e05df3b1SJaegeuk Kim break; 1150e05df3b1SJaegeuk Kim 1151e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1152e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1153e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1154e05df3b1SJaegeuk Kim break; 1155e05df3b1SJaegeuk Kim 1156e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1157e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1158e05df3b1SJaegeuk Kim cont = 0; 1159e05df3b1SJaegeuk Kim break; 1160e05df3b1SJaegeuk Kim 1161e05df3b1SJaegeuk Kim default: 1162e05df3b1SJaegeuk Kim BUG(); 1163e05df3b1SJaegeuk Kim } 1164e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1165e05df3b1SJaegeuk Kim goto fail; 1166e05df3b1SJaegeuk Kim if (offset[1] == 0 && 116758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1168e05df3b1SJaegeuk Kim lock_page(page); 1169ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1170bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 117158bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1172e05df3b1SJaegeuk Kim set_page_dirty(page); 1173e05df3b1SJaegeuk Kim unlock_page(page); 1174e05df3b1SJaegeuk Kim } 1175e05df3b1SJaegeuk Kim offset[1] = 0; 1176e05df3b1SJaegeuk Kim offset[0]++; 1177e05df3b1SJaegeuk Kim nofs += err; 1178e05df3b1SJaegeuk Kim } 1179e05df3b1SJaegeuk Kim fail: 1180e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 118151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1182e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1183e05df3b1SJaegeuk Kim } 1184e05df3b1SJaegeuk Kim 11859c77f754SJaegeuk Kim /* caller must lock inode page */ 11864d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11874f16fb0fSJaegeuk Kim { 11884081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11894f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11904f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11914f16fb0fSJaegeuk Kim struct page *npage; 11927735730dSChao Yu int err; 11934f16fb0fSJaegeuk Kim 11944f16fb0fSJaegeuk Kim if (!nid) 11954f16fb0fSJaegeuk Kim return 0; 11964f16fb0fSJaegeuk Kim 11974d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11984f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11994f16fb0fSJaegeuk Kim return PTR_ERR(npage); 12004f16fb0fSJaegeuk Kim 12017735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 12027735730dSChao Yu err = truncate_node(&dn); 12037735730dSChao Yu if (err) { 12047735730dSChao Yu f2fs_put_page(npage, 1); 12057735730dSChao Yu return err; 12067735730dSChao Yu } 12077735730dSChao Yu 1208205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 120965985d93SJaegeuk Kim 12104f16fb0fSJaegeuk Kim return 0; 12114f16fb0fSJaegeuk Kim } 12124f16fb0fSJaegeuk Kim 121339936837SJaegeuk Kim /* 12144f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 12154f4124d0SChao Yu * f2fs_unlock_op(). 121639936837SJaegeuk Kim */ 12174d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1218e05df3b1SJaegeuk Kim { 1219e05df3b1SJaegeuk Kim struct dnode_of_data dn; 122013ec7297SChao Yu int err; 1221e05df3b1SJaegeuk Kim 1222c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 12234d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 122413ec7297SChao Yu if (err) 122513ec7297SChao Yu return err; 1226e05df3b1SJaegeuk Kim 12274d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 122813ec7297SChao Yu if (err) { 1229c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 123013ec7297SChao Yu return err; 1231e05df3b1SJaegeuk Kim } 1232c2e69583SJaegeuk Kim 1233c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1234c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1235c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12364d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1237c2e69583SJaegeuk Kim 1238e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12398d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12408d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12418d714f8aSJaegeuk Kim return -EIO; 12428d714f8aSJaegeuk Kim } 12438b6810f8SChao Yu 12448b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1245097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1246097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1247dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12488b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12498b6810f8SChao Yu } 1250c2e69583SJaegeuk Kim 1251c2e69583SJaegeuk Kim /* will put inode & node pages */ 12527735730dSChao Yu err = truncate_node(&dn); 12537735730dSChao Yu if (err) { 12547735730dSChao Yu f2fs_put_dnode(&dn); 12557735730dSChao Yu return err; 12567735730dSChao Yu } 125713ec7297SChao Yu return 0; 1258e05df3b1SJaegeuk Kim } 1259e05df3b1SJaegeuk Kim 12604d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1261e05df3b1SJaegeuk Kim { 1262e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1263e05df3b1SJaegeuk Kim 1264e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1265e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 126644a83ff6SJaegeuk Kim 126744a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12684d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1269e05df3b1SJaegeuk Kim } 1270e05df3b1SJaegeuk Kim 12714d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1272e05df3b1SJaegeuk Kim { 12734081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 127425cc5d3bSJaegeuk Kim struct node_info new_ni; 1275e05df3b1SJaegeuk Kim struct page *page; 1276e05df3b1SJaegeuk Kim int err; 1277e05df3b1SJaegeuk Kim 127891942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1279e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1280e05df3b1SJaegeuk Kim 1281300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1282e05df3b1SJaegeuk Kim if (!page) 1283e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1284e05df3b1SJaegeuk Kim 12850abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12869c02740cSJaegeuk Kim goto fail; 12870abd675eSChao Yu 128825cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 12897735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 12907735730dSChao Yu if (err) { 12917735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12927735730dSChao Yu goto fail; 12937735730dSChao Yu } 129425cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 129525cc5d3bSJaegeuk Kim #endif 129625cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1297e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 129825cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 129925cc5d3bSJaegeuk Kim new_ni.flag = 0; 130025cc5d3bSJaegeuk Kim new_ni.version = 0; 1301479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 13029c02740cSJaegeuk Kim 1303bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 13049c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1305c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1306237c0790SJaegeuk Kim if (!PageUptodate(page)) 13079c02740cSJaegeuk Kim SetPageUptodate(page); 130812719ae1SJaegeuk Kim if (set_page_dirty(page)) 130912719ae1SJaegeuk Kim dn->node_changed = true; 1310e05df3b1SJaegeuk Kim 13114bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1312205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1313479bd73aSJaegeuk Kim 1314e05df3b1SJaegeuk Kim if (ofs == 0) 1315e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1316e05df3b1SJaegeuk Kim return page; 1317e05df3b1SJaegeuk Kim 1318e05df3b1SJaegeuk Kim fail: 131971e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1320e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1321e05df3b1SJaegeuk Kim return ERR_PTR(err); 1322e05df3b1SJaegeuk Kim } 1323e05df3b1SJaegeuk Kim 132456ae674cSJaegeuk Kim /* 132556ae674cSJaegeuk Kim * Caller should do after getting the following values. 132656ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 132786531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 132856ae674cSJaegeuk Kim */ 132904d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1330e05df3b1SJaegeuk Kim { 13314081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1332e05df3b1SJaegeuk Kim struct node_info ni; 1333cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 133405ca3632SJaegeuk Kim .sbi = sbi, 1335cf04e8ebSJaegeuk Kim .type = NODE, 133604d328deSMike Christie .op = REQ_OP_READ, 133704d328deSMike Christie .op_flags = op_flags, 133805ca3632SJaegeuk Kim .page = page, 13394375a336SJaegeuk Kim .encrypted_page = NULL, 1340cf04e8ebSJaegeuk Kim }; 13417735730dSChao Yu int err; 1342e05df3b1SJaegeuk Kim 134354c55c4eSWeichao Guo if (PageUptodate(page)) { 1344b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1345b42b179bSChao Yu ClearPageUptodate(page); 134610f966bbSChao Yu return -EFSBADCRC; 1347b42b179bSChao Yu } 13483bdad3c7SJaegeuk Kim return LOCKED_PAGE; 134954c55c4eSWeichao Guo } 13503bdad3c7SJaegeuk Kim 13517735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 13527735730dSChao Yu if (err) 13537735730dSChao Yu return err; 1354e05df3b1SJaegeuk Kim 1355b7ec2061SJaegeuk Kim /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */ 1356b7ec2061SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR) || 135783a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 13582bca1e23SJaegeuk Kim ClearPageUptodate(page); 1359e05df3b1SJaegeuk Kim return -ENOENT; 1360393ff91fSJaegeuk Kim } 1361393ff91fSJaegeuk Kim 13627a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13638b83ac81SChao Yu 13648b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13658b83ac81SChao Yu 13668b83ac81SChao Yu if (!err) 13678b83ac81SChao Yu f2fs_update_iostat(sbi, FS_NODE_READ_IO, F2FS_BLKSIZE); 13688b83ac81SChao Yu 13698b83ac81SChao Yu return err; 1370e05df3b1SJaegeuk Kim } 1371e05df3b1SJaegeuk Kim 13720a8165d7SJaegeuk Kim /* 1373e05df3b1SJaegeuk Kim * Readahead a node page 1374e05df3b1SJaegeuk Kim */ 13754d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1376e05df3b1SJaegeuk Kim { 1377e05df3b1SJaegeuk Kim struct page *apage; 137856ae674cSJaegeuk Kim int err; 1379e05df3b1SJaegeuk Kim 1380e8458725SChao Yu if (!nid) 1381e8458725SChao Yu return; 13824d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1383a4f843bdSJaegeuk Kim return; 1384e8458725SChao Yu 13855ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1386999270deSFan Li if (apage) 1387393ff91fSJaegeuk Kim return; 1388e05df3b1SJaegeuk Kim 1389300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1390e05df3b1SJaegeuk Kim if (!apage) 1391e05df3b1SJaegeuk Kim return; 1392e05df3b1SJaegeuk Kim 139370246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 139486531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1395e05df3b1SJaegeuk Kim } 1396e05df3b1SJaegeuk Kim 139717a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 13980e022ea8SChao Yu struct page *parent, int start) 1399e05df3b1SJaegeuk Kim { 140056ae674cSJaegeuk Kim struct page *page; 140156ae674cSJaegeuk Kim int err; 14024aa69d56SJaegeuk Kim 14034aa69d56SJaegeuk Kim if (!nid) 14044aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 14054d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1406a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1407afcb7ca0SJaegeuk Kim repeat: 1408300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1409e05df3b1SJaegeuk Kim if (!page) 1410e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1411e05df3b1SJaegeuk Kim 141270fd7614SChristoph Hellwig err = read_node_page(page, 0); 141386531d6bSJaegeuk Kim if (err < 0) { 141486531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1415e05df3b1SJaegeuk Kim return ERR_PTR(err); 1416e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 14171f258ec1SChao Yu err = 0; 1418e1c51b9fSChao Yu goto page_hit; 141986531d6bSJaegeuk Kim } 1420aaf96075SJaegeuk Kim 14210e022ea8SChao Yu if (parent) 14224d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 14230e022ea8SChao Yu 1424e1c51b9fSChao Yu lock_page(page); 1425e1c51b9fSChao Yu 14264ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1427afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1428afcb7ca0SJaegeuk Kim goto repeat; 1429afcb7ca0SJaegeuk Kim } 14301563ac75SChao Yu 14311f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14321f258ec1SChao Yu err = -EIO; 14331563ac75SChao Yu goto out_err; 14341f258ec1SChao Yu } 1435704956ecSChao Yu 1436704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 143710f966bbSChao Yu err = -EFSBADCRC; 1438704956ecSChao Yu goto out_err; 1439704956ecSChao Yu } 1440e1c51b9fSChao Yu page_hit: 14410c9df7fbSYunlong Song if (unlikely(nid != nid_of_node(page))) { 1442dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14431f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14441f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14451f258ec1SChao Yu next_blkaddr_of_node(page)); 14466663b138SWeichao Guo set_sbi_flag(sbi, SBI_NEED_FSCK); 14471f258ec1SChao Yu err = -EINVAL; 14480c9df7fbSYunlong Song out_err: 1449ee605234SJaegeuk Kim ClearPageUptodate(page); 14500c9df7fbSYunlong Song f2fs_put_page(page, 1); 14511f258ec1SChao Yu return ERR_PTR(err); 14520c9df7fbSYunlong Song } 1453e05df3b1SJaegeuk Kim return page; 1454e05df3b1SJaegeuk Kim } 1455e05df3b1SJaegeuk Kim 14564d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14570e022ea8SChao Yu { 14580e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14590e022ea8SChao Yu } 14600e022ea8SChao Yu 14614d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1462e05df3b1SJaegeuk Kim { 14634081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14640e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1465e05df3b1SJaegeuk Kim 14660e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1467e05df3b1SJaegeuk Kim } 1468e05df3b1SJaegeuk Kim 14692049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14702049d4fcSJaegeuk Kim { 14712049d4fcSJaegeuk Kim struct inode *inode; 14722049d4fcSJaegeuk Kim struct page *page; 14730f3311a8SChao Yu int ret; 14742049d4fcSJaegeuk Kim 14752049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14762049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14772049d4fcSJaegeuk Kim if (!inode) 14782049d4fcSJaegeuk Kim return; 14792049d4fcSJaegeuk Kim 148001eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 148101eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14822049d4fcSJaegeuk Kim if (!page) 14832049d4fcSJaegeuk Kim goto iput_out; 14842049d4fcSJaegeuk Kim 14852049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14862049d4fcSJaegeuk Kim goto page_out; 14872049d4fcSJaegeuk Kim 14882049d4fcSJaegeuk Kim if (!PageDirty(page)) 14892049d4fcSJaegeuk Kim goto page_out; 14902049d4fcSJaegeuk Kim 14912049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14922049d4fcSJaegeuk Kim goto page_out; 14932049d4fcSJaegeuk Kim 14940f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14952049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 14964d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 14970f3311a8SChao Yu if (ret) 14982049d4fcSJaegeuk Kim set_page_dirty(page); 14992049d4fcSJaegeuk Kim page_out: 15004a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 15012049d4fcSJaegeuk Kim iput_out: 15022049d4fcSJaegeuk Kim iput(inode); 15032049d4fcSJaegeuk Kim } 15042049d4fcSJaegeuk Kim 1505608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1506e05df3b1SJaegeuk Kim { 1507028a63a6SJan Kara pgoff_t index; 1508e05df3b1SJaegeuk Kim struct pagevec pvec; 1509608514deSJaegeuk Kim struct page *last_page = NULL; 1510028a63a6SJan Kara int nr_pages; 151152681375SJaegeuk Kim 151286679820SMel Gorman pagevec_init(&pvec); 151352681375SJaegeuk Kim index = 0; 151452681375SJaegeuk Kim 1515028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 151667fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1517028a63a6SJan Kara int i; 151852681375SJaegeuk Kim 151952681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 152052681375SJaegeuk Kim struct page *page = pvec.pages[i]; 152152681375SJaegeuk Kim 152252681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1523608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 152452681375SJaegeuk Kim pagevec_release(&pvec); 1525608514deSJaegeuk Kim return ERR_PTR(-EIO); 152652681375SJaegeuk Kim } 152752681375SJaegeuk Kim 152852681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 152952681375SJaegeuk Kim continue; 153052681375SJaegeuk Kim if (ino_of_node(page) != ino) 153152681375SJaegeuk Kim continue; 153252681375SJaegeuk Kim 153352681375SJaegeuk Kim lock_page(page); 153452681375SJaegeuk Kim 153552681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 153652681375SJaegeuk Kim continue_unlock: 153752681375SJaegeuk Kim unlock_page(page); 153852681375SJaegeuk Kim continue; 153952681375SJaegeuk Kim } 154052681375SJaegeuk Kim if (ino_of_node(page) != ino) 154152681375SJaegeuk Kim goto continue_unlock; 154252681375SJaegeuk Kim 154352681375SJaegeuk Kim if (!PageDirty(page)) { 154452681375SJaegeuk Kim /* someone wrote it for us */ 154552681375SJaegeuk Kim goto continue_unlock; 154652681375SJaegeuk Kim } 154752681375SJaegeuk Kim 1548608514deSJaegeuk Kim if (last_page) 1549608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1550608514deSJaegeuk Kim 1551608514deSJaegeuk Kim get_page(page); 1552608514deSJaegeuk Kim last_page = page; 1553608514deSJaegeuk Kim unlock_page(page); 1554608514deSJaegeuk Kim } 1555608514deSJaegeuk Kim pagevec_release(&pvec); 1556608514deSJaegeuk Kim cond_resched(); 1557608514deSJaegeuk Kim } 1558608514deSJaegeuk Kim return last_page; 1559608514deSJaegeuk Kim } 1560608514deSJaegeuk Kim 1561d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1562b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 156350fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1564faa24895SJaegeuk Kim { 1565faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1566faa24895SJaegeuk Kim nid_t nid; 1567faa24895SJaegeuk Kim struct node_info ni; 1568faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1569faa24895SJaegeuk Kim .sbi = sbi, 157039d787beSChao Yu .ino = ino_of_node(page), 1571faa24895SJaegeuk Kim .type = NODE, 1572faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1573faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1574faa24895SJaegeuk Kim .page = page, 1575faa24895SJaegeuk Kim .encrypted_page = NULL, 1576d68f735bSJaegeuk Kim .submitted = false, 1577b0af6d49SChao Yu .io_type = io_type, 1578578c6478SYufen Yu .io_wbc = wbc, 1579faa24895SJaegeuk Kim }; 158050fa53ecSChao Yu unsigned int seq; 1581faa24895SJaegeuk Kim 1582faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1583faa24895SJaegeuk Kim 15846d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 15856d7c865cSJaegeuk Kim ClearPageUptodate(page); 15866d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 15876d7c865cSJaegeuk Kim unlock_page(page); 15886d7c865cSJaegeuk Kim return 0; 15896d7c865cSJaegeuk Kim } 1590db198ae0SChao Yu 1591faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1592faa24895SJaegeuk Kim goto redirty_out; 1593faa24895SJaegeuk Kim 1594100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1595100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1596fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1597fd8c8cafSChao Yu goto redirty_out; 1598fd8c8cafSChao Yu 1599faa24895SJaegeuk Kim /* get old block addr of this node page */ 1600faa24895SJaegeuk Kim nid = nid_of_node(page); 1601faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1602faa24895SJaegeuk Kim 16037735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 16047735730dSChao Yu goto redirty_out; 16057735730dSChao Yu 1606faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1607faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1608faa24895SJaegeuk Kim goto redirty_out; 1609faa24895SJaegeuk Kim } else { 1610faa24895SJaegeuk Kim down_read(&sbi->node_write); 1611faa24895SJaegeuk Kim } 1612faa24895SJaegeuk Kim 1613faa24895SJaegeuk Kim /* This page is already truncated */ 1614faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1615faa24895SJaegeuk Kim ClearPageUptodate(page); 1616faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1617faa24895SJaegeuk Kim up_read(&sbi->node_write); 1618faa24895SJaegeuk Kim unlock_page(page); 1619faa24895SJaegeuk Kim return 0; 1620faa24895SJaegeuk Kim } 1621faa24895SJaegeuk Kim 1622c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 162393770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 162493770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 162589d13c38SJaegeuk Kim up_read(&sbi->node_write); 1626c9b60788SChao Yu goto redirty_out; 162789d13c38SJaegeuk Kim } 1628c9b60788SChao Yu 1629e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1630e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1631e7c75ab0SJaegeuk Kim 1632dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 163350fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 163450fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 163550fa53ecSChao Yu if (seq_id) 163650fa53ecSChao Yu *seq_id = seq; 163750fa53ecSChao Yu } 163850fa53ecSChao Yu 1639dc5a9412SChao Yu set_page_writeback(page); 1640dc5a9412SChao Yu ClearPageError(page); 1641dc5a9412SChao Yu 1642faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16434d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1644faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1645faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1646faa24895SJaegeuk Kim up_read(&sbi->node_write); 1647faa24895SJaegeuk Kim 1648d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1649bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1650d68f735bSJaegeuk Kim submitted = NULL; 1651d68f735bSJaegeuk Kim } 1652faa24895SJaegeuk Kim 1653faa24895SJaegeuk Kim unlock_page(page); 1654faa24895SJaegeuk Kim 1655d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1656b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1657d68f735bSJaegeuk Kim submitted = NULL; 1658d68f735bSJaegeuk Kim } 1659d68f735bSJaegeuk Kim if (submitted) 1660d68f735bSJaegeuk Kim *submitted = fio.submitted; 1661faa24895SJaegeuk Kim 1662401db79fSYunlong Song if (do_balance) 1663401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1664faa24895SJaegeuk Kim return 0; 1665faa24895SJaegeuk Kim 1666faa24895SJaegeuk Kim redirty_out: 1667faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1668faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1669faa24895SJaegeuk Kim } 1670faa24895SJaegeuk Kim 167148018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1672f15194fcSYunlei He { 167348018b4cSChao Yu int err = 0; 167448018b4cSChao Yu 1675f15194fcSYunlei He if (gc_type == FG_GC) { 1676f15194fcSYunlei He struct writeback_control wbc = { 1677f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1678f15194fcSYunlei He .nr_to_write = 1, 1679f15194fcSYunlei He .for_reclaim = 0, 1680f15194fcSYunlei He }; 1681f15194fcSYunlei He 1682bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16838d64d365SChao Yu 16848d64d365SChao Yu set_page_dirty(node_page); 16858d64d365SChao Yu 168648018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 168748018b4cSChao Yu err = -EAGAIN; 1688f15194fcSYunlei He goto out_page; 168948018b4cSChao Yu } 1690f15194fcSYunlei He 1691f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 169248018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 169348018b4cSChao Yu err = -EAGAIN; 1694f15194fcSYunlei He unlock_page(node_page); 169548018b4cSChao Yu } 1696f15194fcSYunlei He goto release_page; 1697f15194fcSYunlei He } else { 1698f15194fcSYunlei He /* set page dirty and write it */ 1699f15194fcSYunlei He if (!PageWriteback(node_page)) 1700f15194fcSYunlei He set_page_dirty(node_page); 1701f15194fcSYunlei He } 1702f15194fcSYunlei He out_page: 1703f15194fcSYunlei He unlock_page(node_page); 1704f15194fcSYunlei He release_page: 1705f15194fcSYunlei He f2fs_put_page(node_page, 0); 170648018b4cSChao Yu return err; 1707f15194fcSYunlei He } 1708f15194fcSYunlei He 1709faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1710faa24895SJaegeuk Kim struct writeback_control *wbc) 1711faa24895SJaegeuk Kim { 171250fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 171350fa53ecSChao Yu FS_NODE_IO, NULL); 1714faa24895SJaegeuk Kim } 1715faa24895SJaegeuk Kim 17164d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 171750fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 171850fa53ecSChao Yu unsigned int *seq_id) 1719608514deSJaegeuk Kim { 1720028a63a6SJan Kara pgoff_t index; 1721608514deSJaegeuk Kim struct pagevec pvec; 1722608514deSJaegeuk Kim int ret = 0; 1723608514deSJaegeuk Kim struct page *last_page = NULL; 1724608514deSJaegeuk Kim bool marked = false; 172526de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1726028a63a6SJan Kara int nr_pages; 1727bab475c5SChao Yu int nwritten = 0; 1728608514deSJaegeuk Kim 1729608514deSJaegeuk Kim if (atomic) { 1730608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1731608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1732608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1733608514deSJaegeuk Kim } 1734608514deSJaegeuk Kim retry: 173586679820SMel Gorman pagevec_init(&pvec); 1736608514deSJaegeuk Kim index = 0; 1737608514deSJaegeuk Kim 1738028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 173967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1740028a63a6SJan Kara int i; 1741608514deSJaegeuk Kim 1742608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1743608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1744d68f735bSJaegeuk Kim bool submitted = false; 1745608514deSJaegeuk Kim 1746608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1747608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1748608514deSJaegeuk Kim pagevec_release(&pvec); 17499de69279SChao Yu ret = -EIO; 17509de69279SChao Yu goto out; 1751608514deSJaegeuk Kim } 1752608514deSJaegeuk Kim 1753608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1754608514deSJaegeuk Kim continue; 1755608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1756608514deSJaegeuk Kim continue; 1757608514deSJaegeuk Kim 1758608514deSJaegeuk Kim lock_page(page); 1759608514deSJaegeuk Kim 1760608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1761608514deSJaegeuk Kim continue_unlock: 1762608514deSJaegeuk Kim unlock_page(page); 1763608514deSJaegeuk Kim continue; 1764608514deSJaegeuk Kim } 1765608514deSJaegeuk Kim if (ino_of_node(page) != ino) 176652681375SJaegeuk Kim goto continue_unlock; 176752681375SJaegeuk Kim 1768608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1769608514deSJaegeuk Kim /* someone wrote it for us */ 1770608514deSJaegeuk Kim goto continue_unlock; 1771608514deSJaegeuk Kim } 1772608514deSJaegeuk Kim 1773bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1774608514deSJaegeuk Kim 1775d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1776d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1777d29fd172SJaegeuk Kim 1778608514deSJaegeuk Kim if (!atomic || page == last_page) { 177952681375SJaegeuk Kim set_fsync_mark(page, 1); 178026de9b11SJaegeuk Kim if (IS_INODE(page)) { 178126de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 178226de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17834d57b86dSChao Yu f2fs_update_inode(inode, page); 178452681375SJaegeuk Kim set_dentry_mark(page, 17854d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 178626de9b11SJaegeuk Kim } 1787608514deSJaegeuk Kim /* may be written by other thread */ 1788608514deSJaegeuk Kim if (!PageDirty(page)) 1789608514deSJaegeuk Kim set_page_dirty(page); 1790608514deSJaegeuk Kim } 1791608514deSJaegeuk Kim 1792608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1793608514deSJaegeuk Kim goto continue_unlock; 179452681375SJaegeuk Kim 1795e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1796d68f735bSJaegeuk Kim page == last_page, 1797b0af6d49SChao Yu &submitted, wbc, true, 179850fa53ecSChao Yu FS_NODE_IO, seq_id); 1799c267ec15SJaegeuk Kim if (ret) { 180052681375SJaegeuk Kim unlock_page(page); 1801608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1802608514deSJaegeuk Kim break; 1803d68f735bSJaegeuk Kim } else if (submitted) { 1804bab475c5SChao Yu nwritten++; 1805608514deSJaegeuk Kim } 18063f5f4959SChao Yu 1807608514deSJaegeuk Kim if (page == last_page) { 1808608514deSJaegeuk Kim f2fs_put_page(page, 0); 1809608514deSJaegeuk Kim marked = true; 181052681375SJaegeuk Kim break; 181152681375SJaegeuk Kim } 1812c267ec15SJaegeuk Kim } 181352681375SJaegeuk Kim pagevec_release(&pvec); 181452681375SJaegeuk Kim cond_resched(); 181552681375SJaegeuk Kim 1816608514deSJaegeuk Kim if (ret || marked) 181752681375SJaegeuk Kim break; 181852681375SJaegeuk Kim } 1819608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1820dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1821608514deSJaegeuk Kim ino, last_page->index); 1822608514deSJaegeuk Kim lock_page(last_page); 1823bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1824608514deSJaegeuk Kim set_page_dirty(last_page); 1825608514deSJaegeuk Kim unlock_page(last_page); 1826608514deSJaegeuk Kim goto retry; 1827608514deSJaegeuk Kim } 18289de69279SChao Yu out: 1829bab475c5SChao Yu if (nwritten) 1830bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1831c267ec15SJaegeuk Kim return ret ? -EIO : 0; 183252681375SJaegeuk Kim } 183352681375SJaegeuk Kim 1834052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1835052a82d8SChao Yu { 1836052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1837052a82d8SChao Yu bool clean; 1838052a82d8SChao Yu 1839052a82d8SChao Yu if (inode->i_ino != ino) 1840052a82d8SChao Yu return 0; 1841052a82d8SChao Yu 1842052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1843052a82d8SChao Yu return 0; 1844052a82d8SChao Yu 1845052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1846052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1847052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1848052a82d8SChao Yu 1849052a82d8SChao Yu if (clean) 1850052a82d8SChao Yu return 0; 1851052a82d8SChao Yu 1852052a82d8SChao Yu inode = igrab(inode); 1853052a82d8SChao Yu if (!inode) 1854052a82d8SChao Yu return 0; 1855052a82d8SChao Yu return 1; 1856052a82d8SChao Yu } 1857052a82d8SChao Yu 1858052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1859052a82d8SChao Yu { 1860052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1861052a82d8SChao Yu struct inode *inode; 1862052a82d8SChao Yu nid_t ino = ino_of_node(page); 1863052a82d8SChao Yu 1864052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1865052a82d8SChao Yu if (!inode) 1866052a82d8SChao Yu return false; 1867052a82d8SChao Yu 1868052a82d8SChao Yu f2fs_update_inode(inode, page); 1869052a82d8SChao Yu unlock_page(page); 1870052a82d8SChao Yu 1871052a82d8SChao Yu iput(inode); 1872052a82d8SChao Yu return true; 1873052a82d8SChao Yu } 1874052a82d8SChao Yu 187568e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 187634c061adSSayali Lokhande { 187734c061adSSayali Lokhande pgoff_t index = 0; 187834c061adSSayali Lokhande struct pagevec pvec; 187934c061adSSayali Lokhande int nr_pages; 188034c061adSSayali Lokhande 188134c061adSSayali Lokhande pagevec_init(&pvec); 188234c061adSSayali Lokhande 188334c061adSSayali Lokhande while ((nr_pages = pagevec_lookup_tag(&pvec, 188434c061adSSayali Lokhande NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 188534c061adSSayali Lokhande int i; 188634c061adSSayali Lokhande 188734c061adSSayali Lokhande for (i = 0; i < nr_pages; i++) { 188834c061adSSayali Lokhande struct page *page = pvec.pages[i]; 188934c061adSSayali Lokhande 189034c061adSSayali Lokhande if (!IS_DNODE(page)) 189134c061adSSayali Lokhande continue; 189234c061adSSayali Lokhande 189334c061adSSayali Lokhande lock_page(page); 189434c061adSSayali Lokhande 189534c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 189634c061adSSayali Lokhande continue_unlock: 189734c061adSSayali Lokhande unlock_page(page); 189834c061adSSayali Lokhande continue; 189934c061adSSayali Lokhande } 190034c061adSSayali Lokhande 190134c061adSSayali Lokhande if (!PageDirty(page)) { 190234c061adSSayali Lokhande /* someone wrote it for us */ 190334c061adSSayali Lokhande goto continue_unlock; 190434c061adSSayali Lokhande } 190534c061adSSayali Lokhande 190634c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1907b763f3beSChao Yu if (page_private_inline(page)) { 1908b763f3beSChao Yu clear_page_private_inline(page); 190934c061adSSayali Lokhande unlock_page(page); 191034c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 191134c061adSSayali Lokhande continue; 191234c061adSSayali Lokhande } 191334c061adSSayali Lokhande unlock_page(page); 191434c061adSSayali Lokhande } 191534c061adSSayali Lokhande pagevec_release(&pvec); 191634c061adSSayali Lokhande cond_resched(); 191734c061adSSayali Lokhande } 191834c061adSSayali Lokhande } 191934c061adSSayali Lokhande 19204d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 19214d57b86dSChao Yu struct writeback_control *wbc, 1922b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 192352681375SJaegeuk Kim { 1924028a63a6SJan Kara pgoff_t index; 192552681375SJaegeuk Kim struct pagevec pvec; 192652681375SJaegeuk Kim int step = 0; 192712bb0a8fSJaegeuk Kim int nwritten = 0; 19283f5f4959SChao Yu int ret = 0; 1929c29fd0c0SChao Yu int nr_pages, done = 0; 1930e05df3b1SJaegeuk Kim 193186679820SMel Gorman pagevec_init(&pvec); 1932e05df3b1SJaegeuk Kim 1933e05df3b1SJaegeuk Kim next_step: 1934e05df3b1SJaegeuk Kim index = 0; 1935e05df3b1SJaegeuk Kim 1936c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1937c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1938028a63a6SJan Kara int i; 1939e05df3b1SJaegeuk Kim 1940e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1941e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1942d68f735bSJaegeuk Kim bool submitted = false; 1943052a82d8SChao Yu bool may_dirty = true; 1944e05df3b1SJaegeuk Kim 1945c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1946c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1947c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1948c29fd0c0SChao Yu done = 1; 1949c29fd0c0SChao Yu break; 1950c29fd0c0SChao Yu } 1951c29fd0c0SChao Yu 1952e05df3b1SJaegeuk Kim /* 1953e05df3b1SJaegeuk Kim * flushing sequence with step: 1954e05df3b1SJaegeuk Kim * 0. indirect nodes 1955e05df3b1SJaegeuk Kim * 1. dentry dnodes 1956e05df3b1SJaegeuk Kim * 2. file dnodes 1957e05df3b1SJaegeuk Kim */ 1958e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1959e05df3b1SJaegeuk Kim continue; 1960e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1961e05df3b1SJaegeuk Kim is_cold_node(page))) 1962e05df3b1SJaegeuk Kim continue; 1963e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1964e05df3b1SJaegeuk Kim !is_cold_node(page))) 1965e05df3b1SJaegeuk Kim continue; 19669a4cbc9eSChao Yu lock_node: 19674b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 19684b270a8cSChao Yu lock_page(page); 19694b270a8cSChao Yu else if (!trylock_page(page)) 1970e05df3b1SJaegeuk Kim continue; 1971e05df3b1SJaegeuk Kim 19724ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1973e05df3b1SJaegeuk Kim continue_unlock: 1974e05df3b1SJaegeuk Kim unlock_page(page); 1975e05df3b1SJaegeuk Kim continue; 1976e05df3b1SJaegeuk Kim } 1977e05df3b1SJaegeuk Kim 1978e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1979e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1980e05df3b1SJaegeuk Kim goto continue_unlock; 1981e05df3b1SJaegeuk Kim } 1982e05df3b1SJaegeuk Kim 1983b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 1984b0f3b87fSJaegeuk Kim if (!do_balance) 1985b0f3b87fSJaegeuk Kim goto write_node; 1986b0f3b87fSJaegeuk Kim 1987b0f3b87fSJaegeuk Kim /* flush inline_data */ 1988b763f3beSChao Yu if (page_private_inline(page)) { 1989b763f3beSChao Yu clear_page_private_inline(page); 19902049d4fcSJaegeuk Kim unlock_page(page); 19912049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 19929a4cbc9eSChao Yu goto lock_node; 19932049d4fcSJaegeuk Kim } 19942049d4fcSJaegeuk Kim 1995052a82d8SChao Yu /* flush dirty inode */ 1996052a82d8SChao Yu if (IS_INODE(page) && may_dirty) { 1997052a82d8SChao Yu may_dirty = false; 1998052a82d8SChao Yu if (flush_dirty_inode(page)) 1999052a82d8SChao Yu goto lock_node; 2000052a82d8SChao Yu } 2001b0f3b87fSJaegeuk Kim write_node: 2002bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 2003fa3d2bdfSJaegeuk Kim 2004e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 2005e05df3b1SJaegeuk Kim goto continue_unlock; 2006e05df3b1SJaegeuk Kim 2007e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 2008e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 200952746519SJaegeuk Kim 2010401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 201150fa53ecSChao Yu wbc, do_balance, io_type, NULL); 2012d68f735bSJaegeuk Kim if (ret) 201352746519SJaegeuk Kim unlock_page(page); 2014d68f735bSJaegeuk Kim else if (submitted) 20153f5f4959SChao Yu nwritten++; 2016e05df3b1SJaegeuk Kim 2017e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 2018e05df3b1SJaegeuk Kim break; 2019e05df3b1SJaegeuk Kim } 2020e05df3b1SJaegeuk Kim pagevec_release(&pvec); 2021e05df3b1SJaegeuk Kim cond_resched(); 2022e05df3b1SJaegeuk Kim 2023e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 2024e05df3b1SJaegeuk Kim step = 2; 2025e05df3b1SJaegeuk Kim break; 2026e05df3b1SJaegeuk Kim } 2027e05df3b1SJaegeuk Kim } 2028e05df3b1SJaegeuk Kim 2029e05df3b1SJaegeuk Kim if (step < 2) { 2030100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2031100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2032fd8c8cafSChao Yu goto out; 2033e05df3b1SJaegeuk Kim step++; 2034e05df3b1SJaegeuk Kim goto next_step; 2035e05df3b1SJaegeuk Kim } 2036fd8c8cafSChao Yu out: 20373f5f4959SChao Yu if (nwritten) 2038b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2039db198ae0SChao Yu 2040db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2041db198ae0SChao Yu return -EIO; 20423f5f4959SChao Yu return ret; 2043e05df3b1SJaegeuk Kim } 2044e05df3b1SJaegeuk Kim 204550fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 204650fa53ecSChao Yu unsigned int seq_id) 2047cfe58f9dSJaegeuk Kim { 204850fa53ecSChao Yu struct fsync_node_entry *fn; 204950fa53ecSChao Yu struct page *page; 205050fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 205150fa53ecSChao Yu unsigned long flags; 205250fa53ecSChao Yu unsigned int cur_seq_id = 0; 2053280db3c8SMiklos Szeredi int ret2, ret = 0; 2054cfe58f9dSJaegeuk Kim 205550fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 205650fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 205750fa53ecSChao Yu if (list_empty(head)) { 205850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 205950fa53ecSChao Yu break; 206050fa53ecSChao Yu } 206150fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 206250fa53ecSChao Yu if (fn->seq_id > seq_id) { 206350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 206450fa53ecSChao Yu break; 206550fa53ecSChao Yu } 206650fa53ecSChao Yu cur_seq_id = fn->seq_id; 206750fa53ecSChao Yu page = fn->page; 206850fa53ecSChao Yu get_page(page); 206950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20704ef51a8fSJaegeuk Kim 2071bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 2072cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 2073cfe58f9dSJaegeuk Kim ret = -EIO; 207450fa53ecSChao Yu 207550fa53ecSChao Yu put_page(page); 207650fa53ecSChao Yu 207750fa53ecSChao Yu if (ret) 207850fa53ecSChao Yu break; 2079cfe58f9dSJaegeuk Kim } 2080cfe58f9dSJaegeuk Kim 2081280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 2082cfe58f9dSJaegeuk Kim if (!ret) 2083cfe58f9dSJaegeuk Kim ret = ret2; 208450fa53ecSChao Yu 2085cfe58f9dSJaegeuk Kim return ret; 2086cfe58f9dSJaegeuk Kim } 2087cfe58f9dSJaegeuk Kim 2088e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 2089e05df3b1SJaegeuk Kim struct writeback_control *wbc) 2090e05df3b1SJaegeuk Kim { 20914081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 20929dfa1bafSJaegeuk Kim struct blk_plug plug; 209350c8cdb3SJaegeuk Kim long diff; 2094e05df3b1SJaegeuk Kim 20950771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 20960771fcc7SChao Yu goto skip_write; 20970771fcc7SChao Yu 20984660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 20997bcd0cfaSChao Yu f2fs_balance_fs_bg(sbi, true); 2100e05df3b1SJaegeuk Kim 2101a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 2102812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 2103812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 2104812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 2105d3baf95dSJaegeuk Kim goto skip_write; 2106a7fdffbdSJaegeuk Kim 2107c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2108c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 2109c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 2110c29fd0c0SChao Yu goto skip_write; 2111c29fd0c0SChao Yu 2112d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2113d31c7c3fSYunlei He 211450c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 21159dfa1bafSJaegeuk Kim blk_start_plug(&plug); 21164d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 21179dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 211850c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2119c29fd0c0SChao Yu 2120c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2121c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2122e05df3b1SJaegeuk Kim return 0; 2123d3baf95dSJaegeuk Kim 2124d3baf95dSJaegeuk Kim skip_write: 2125d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2126d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2127d3baf95dSJaegeuk Kim return 0; 2128e05df3b1SJaegeuk Kim } 2129e05df3b1SJaegeuk Kim 2130e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 2131e05df3b1SJaegeuk Kim { 213226c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 213326c6b887SJaegeuk Kim 2134237c0790SJaegeuk Kim if (!PageUptodate(page)) 2135e05df3b1SJaegeuk Kim SetPageUptodate(page); 213654c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 213754c55c4eSWeichao Guo if (IS_INODE(page)) 213854c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 213954c55c4eSWeichao Guo #endif 2140e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 2141b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 21424081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 2143b763f3beSChao Yu set_page_private_reference(page); 2144e05df3b1SJaegeuk Kim return 1; 2145e05df3b1SJaegeuk Kim } 2146e05df3b1SJaegeuk Kim return 0; 2147e05df3b1SJaegeuk Kim } 2148e05df3b1SJaegeuk Kim 21490a8165d7SJaegeuk Kim /* 2150e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2151e05df3b1SJaegeuk Kim */ 2152e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2153e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2154e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2155e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 2156487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 2157487261f3SChao Yu .releasepage = f2fs_release_page, 21585b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 21595b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 21605b7a487cSWeichao Guo #endif 2161e05df3b1SJaegeuk Kim }; 2162e05df3b1SJaegeuk Kim 21638a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 21648a7ed66aSJaegeuk Kim nid_t n) 2165e05df3b1SJaegeuk Kim { 21668a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 21673aa770a9SNamjae Jeon } 2168e05df3b1SJaegeuk Kim 21699a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2170b815bdc7SLiu Song struct free_nid *i) 2171e05df3b1SJaegeuk Kim { 2172b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2173eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 21745f029c04SYi Zhuang 2175eb0aa4b8SJaegeuk Kim if (err) 2176eb0aa4b8SJaegeuk Kim return err; 2177eb0aa4b8SJaegeuk Kim 2178b815bdc7SLiu Song nm_i->nid_cnt[FREE_NID]++; 21799a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2180eb0aa4b8SJaegeuk Kim return 0; 2181b8559dc2SChao Yu } 2182b8559dc2SChao Yu 21839a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2184a0761f63SFan Li struct free_nid *i, enum nid_state state) 2185b8559dc2SChao Yu { 2186b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2187b8559dc2SChao Yu 21889a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 21899a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 21909a4ffdf5SChao Yu if (state == FREE_NID) 2191e05df3b1SJaegeuk Kim list_del(&i->list); 21928a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2193e05df3b1SJaegeuk Kim } 2194e05df3b1SJaegeuk Kim 2195a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2196a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2197a0761f63SFan Li { 2198a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2199a0761f63SFan Li 2200a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2201a0761f63SFan Li i->state = dst_state; 2202a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2203a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2204a0761f63SFan Li 2205a0761f63SFan Li switch (dst_state) { 2206a0761f63SFan Li case PREALLOC_NID: 2207a0761f63SFan Li list_del(&i->list); 2208a0761f63SFan Li break; 2209a0761f63SFan Li case FREE_NID: 2210a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2211a0761f63SFan Li break; 2212a0761f63SFan Li default: 2213a0761f63SFan Li BUG_ON(1); 2214a0761f63SFan Li } 2215a0761f63SFan Li } 2216a0761f63SFan Li 221794c821fbSChao Yu bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi) 221894c821fbSChao Yu { 221994c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 222094c821fbSChao Yu unsigned int i; 222194c821fbSChao Yu bool ret = true; 222294c821fbSChao Yu 222394c821fbSChao Yu down_read(&nm_i->nat_tree_lock); 222494c821fbSChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 222594c821fbSChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) { 222694c821fbSChao Yu ret = false; 222794c821fbSChao Yu break; 222894c821fbSChao Yu } 222994c821fbSChao Yu } 223094c821fbSChao Yu up_read(&nm_i->nat_tree_lock); 223194c821fbSChao Yu 223294c821fbSChao Yu return ret; 223394c821fbSChao Yu } 223494c821fbSChao Yu 22355921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 22365921aaa1SLiFan bool set, bool build) 22375921aaa1SLiFan { 22385921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 22395921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 22405921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 22415921aaa1SLiFan 22425921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 22435921aaa1SLiFan return; 22445921aaa1SLiFan 22455921aaa1SLiFan if (set) { 22465921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22475921aaa1SLiFan return; 22485921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22495921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 22505921aaa1SLiFan } else { 22515921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22525921aaa1SLiFan return; 22535921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22545921aaa1SLiFan if (!build) 22555921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 22565921aaa1SLiFan } 22575921aaa1SLiFan } 22585921aaa1SLiFan 22594ac91242SChao Yu /* return if the nid is recognized as free */ 22605921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 22615921aaa1SLiFan nid_t nid, bool build, bool update) 2262e05df3b1SJaegeuk Kim { 22636fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 226430a61ddfSChao Yu struct free_nid *i, *e; 226559bbd474SJaegeuk Kim struct nat_entry *ne; 226630a61ddfSChao Yu int err = -EINVAL; 226730a61ddfSChao Yu bool ret = false; 22689198acebSJaegeuk Kim 22699198acebSJaegeuk Kim /* 0 nid should not be used */ 2270cfb271d4SChao Yu if (unlikely(nid == 0)) 22714ac91242SChao Yu return false; 227259bbd474SJaegeuk Kim 2273626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2274626bcf2bSChao Yu return false; 2275626bcf2bSChao Yu 227632410577SChao Yu i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL); 2277e05df3b1SJaegeuk Kim i->nid = nid; 22789a4ffdf5SChao Yu i->state = FREE_NID; 2279e05df3b1SJaegeuk Kim 22805921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2281769ec6e5SJaegeuk Kim 2282b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 228330a61ddfSChao Yu 228430a61ddfSChao Yu if (build) { 228530a61ddfSChao Yu /* 228630a61ddfSChao Yu * Thread A Thread B 228730a61ddfSChao Yu * - f2fs_create 228830a61ddfSChao Yu * - f2fs_new_inode 22894d57b86dSChao Yu * - f2fs_alloc_nid 22909a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 229130a61ddfSChao Yu * - f2fs_balance_fs_bg 22924d57b86dSChao Yu * - f2fs_build_free_nids 22934d57b86dSChao Yu * - __f2fs_build_free_nids 229430a61ddfSChao Yu * - scan_nat_page 229530a61ddfSChao Yu * - add_free_nid 229630a61ddfSChao Yu * - __lookup_nat_cache 229730a61ddfSChao Yu * - f2fs_add_link 22984d57b86dSChao Yu * - f2fs_init_inode_metadata 22994d57b86dSChao Yu * - f2fs_new_inode_page 23004d57b86dSChao Yu * - f2fs_new_node_page 230130a61ddfSChao Yu * - set_node_addr 23024d57b86dSChao Yu * - f2fs_alloc_nid_done 23039a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 23049a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 230530a61ddfSChao Yu */ 230630a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 230730a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 230830a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 230930a61ddfSChao Yu goto err_out; 231030a61ddfSChao Yu 231130a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 231230a61ddfSChao Yu if (e) { 23139a4ffdf5SChao Yu if (e->state == FREE_NID) 231430a61ddfSChao Yu ret = true; 231530a61ddfSChao Yu goto err_out; 231630a61ddfSChao Yu } 231730a61ddfSChao Yu } 231830a61ddfSChao Yu ret = true; 2319b815bdc7SLiu Song err = __insert_free_nid(sbi, i); 232030a61ddfSChao Yu err_out: 23215921aaa1SLiFan if (update) { 23225921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 23235921aaa1SLiFan if (!build) 23245921aaa1SLiFan nm_i->available_nids++; 23255921aaa1SLiFan } 2326b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2327769ec6e5SJaegeuk Kim radix_tree_preload_end(); 23285921aaa1SLiFan 232930a61ddfSChao Yu if (err) 2330e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 233130a61ddfSChao Yu return ret; 2332e05df3b1SJaegeuk Kim } 2333e05df3b1SJaegeuk Kim 2334b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2335e05df3b1SJaegeuk Kim { 2336b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2337e05df3b1SJaegeuk Kim struct free_nid *i; 2338cf0ee0f0SChao Yu bool need_free = false; 2339cf0ee0f0SChao Yu 2340b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23418a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 23429a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2343a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2344cf0ee0f0SChao Yu need_free = true; 2345e05df3b1SJaegeuk Kim } 2346b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2347cf0ee0f0SChao Yu 2348cf0ee0f0SChao Yu if (need_free) 2349cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2350e05df3b1SJaegeuk Kim } 2351e05df3b1SJaegeuk Kim 2352e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2353e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2354e05df3b1SJaegeuk Kim { 23556fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2356e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2357e05df3b1SJaegeuk Kim block_t blk_addr; 23584ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2359e05df3b1SJaegeuk Kim int i; 2360e05df3b1SJaegeuk Kim 236123380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 23624ac91242SChao Yu 2363e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2364e05df3b1SJaegeuk Kim 2365e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2366cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 236704431c44SJaegeuk Kim break; 236823d38844SHaicheng Li 2369e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2370e2374015SChao Yu 2371e2374015SChao Yu if (blk_addr == NEW_ADDR) 2372e2374015SChao Yu return -EINVAL; 2373e2374015SChao Yu 23745921aaa1SLiFan if (blk_addr == NULL_ADDR) { 23755921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 23765921aaa1SLiFan } else { 2377346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 23785921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2379346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2380e05df3b1SJaegeuk Kim } 2381e05df3b1SJaegeuk Kim } 2382e2374015SChao Yu 2383e2374015SChao Yu return 0; 23845921aaa1SLiFan } 2385e05df3b1SJaegeuk Kim 23862fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 23874ac91242SChao Yu { 23884ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 23894ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 23902fbaa25fSChao Yu int i; 23914ac91242SChao Yu 23924ac91242SChao Yu down_read(&curseg->journal_rwsem); 23934ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 23944ac91242SChao Yu block_t addr; 23954ac91242SChao Yu nid_t nid; 23964ac91242SChao Yu 23974ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 23984ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 23994ac91242SChao Yu if (addr == NULL_ADDR) 24005921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24014ac91242SChao Yu else 24024ac91242SChao Yu remove_free_nid(sbi, nid); 24034ac91242SChao Yu } 24044ac91242SChao Yu up_read(&curseg->journal_rwsem); 24052fbaa25fSChao Yu } 24062fbaa25fSChao Yu 2407e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 24084ac91242SChao Yu { 24094ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 24104ac91242SChao Yu unsigned int i, idx; 241197456574SFan Li nid_t nid; 24124ac91242SChao Yu 24134ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 24144ac91242SChao Yu 24154ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 24164ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 24174ac91242SChao Yu continue; 24184ac91242SChao Yu if (!nm_i->free_nid_count[i]) 24194ac91242SChao Yu continue; 24204ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 242197456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 242297456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 242397456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 242497456574SFan Li break; 24254ac91242SChao Yu 24264ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 24275921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24284ac91242SChao Yu 24299a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 24304ac91242SChao Yu goto out; 24314ac91242SChao Yu } 24324ac91242SChao Yu } 24334ac91242SChao Yu out: 24342fbaa25fSChao Yu scan_curseg_cache(sbi); 24354ac91242SChao Yu 24364ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 24374ac91242SChao Yu } 24384ac91242SChao Yu 2439e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 24404d57b86dSChao Yu bool sync, bool mount) 2441e05df3b1SJaegeuk Kim { 2442e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2443e2374015SChao Yu int i = 0, ret; 244455008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2445e05df3b1SJaegeuk Kim 2446e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2447e9cdd307SYunlei He nid = 0; 2448e9cdd307SYunlei He 2449e2cab031SSahitya Tummala if (unlikely(nid % NAT_ENTRY_PER_BLOCK)) 2450e2cab031SSahitya Tummala nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK; 2451e2cab031SSahitya Tummala 245255008d84SJaegeuk Kim /* Enough entries */ 24539a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2454e2374015SChao Yu return 0; 2455e05df3b1SJaegeuk Kim 24564d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2457e2374015SChao Yu return 0; 2458e05df3b1SJaegeuk Kim 24594ac91242SChao Yu if (!mount) { 24604ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 24614ac91242SChao Yu scan_free_nid_bits(sbi); 24624ac91242SChao Yu 246374986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2464e2374015SChao Yu return 0; 246522ad0b6aSJaegeuk Kim } 246622ad0b6aSJaegeuk Kim 246755008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 24684d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 246926879fb1SChao Yu META_NAT, true); 2470e05df3b1SJaegeuk Kim 2471b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2472a5131193SJaegeuk Kim 2473e05df3b1SJaegeuk Kim while (1) { 247466e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 247566e83361SYunlei He nm_i->nat_block_bitmap)) { 2476e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2477e05df3b1SJaegeuk Kim 2478edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2479edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2480edc55aafSJaegeuk Kim } else { 2481e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2482e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2483edc55aafSJaegeuk Kim } 2484e2374015SChao Yu 2485e2374015SChao Yu if (ret) { 2486e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2487dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2488edc55aafSJaegeuk Kim return ret; 2489e2374015SChao Yu } 249066e83361SYunlei He } 2491e05df3b1SJaegeuk Kim 2492e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2493cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2494e05df3b1SJaegeuk Kim nid = 0; 249555008d84SJaegeuk Kim 2496a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2497e05df3b1SJaegeuk Kim break; 2498e05df3b1SJaegeuk Kim } 2499e05df3b1SJaegeuk Kim 250055008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 250155008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2502e05df3b1SJaegeuk Kim 2503e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 25042fbaa25fSChao Yu scan_curseg_cache(sbi); 2505dfc08a12SChao Yu 2506b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 25072db2388fSChao Yu 25084d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2509ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2510e2374015SChao Yu 2511e2374015SChao Yu return 0; 2512e05df3b1SJaegeuk Kim } 2513e05df3b1SJaegeuk Kim 2514e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 25152411cf5bSChao Yu { 2516e2374015SChao Yu int ret; 2517e2374015SChao Yu 25182411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2519e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 25202411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2521e2374015SChao Yu 2522e2374015SChao Yu return ret; 25232411cf5bSChao Yu } 25242411cf5bSChao Yu 2525e05df3b1SJaegeuk Kim /* 2526e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2527e05df3b1SJaegeuk Kim * from second parameter of this function. 2528e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2529e05df3b1SJaegeuk Kim */ 25304d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2531e05df3b1SJaegeuk Kim { 2532e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2533e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2534e05df3b1SJaegeuk Kim retry: 253555523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 2536c45d6002SChao Yu f2fs_show_injection_info(sbi, FAULT_ALLOC_NID); 2537cb78942bSJaegeuk Kim return false; 253855523519SChao Yu } 25397fa750a1SArnd Bergmann 2540b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2541e05df3b1SJaegeuk Kim 254204d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 254304d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 254404d47e67SChao Yu return false; 254504d47e67SChao Yu } 2546e05df3b1SJaegeuk Kim 25474d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 25484d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 25499a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 25509a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2551b8559dc2SChao Yu struct free_nid, list); 2552e05df3b1SJaegeuk Kim *nid = i->nid; 2553b8559dc2SChao Yu 2554a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 255504d47e67SChao Yu nm_i->available_nids--; 25564ac91242SChao Yu 2557346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 25584ac91242SChao Yu 2559b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2560e05df3b1SJaegeuk Kim return true; 2561e05df3b1SJaegeuk Kim } 2562b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 256355008d84SJaegeuk Kim 256455008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2565f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 256655008d84SJaegeuk Kim goto retry; 2567f84262b0SJaegeuk Kim return false; 256855008d84SJaegeuk Kim } 2569e05df3b1SJaegeuk Kim 25700a8165d7SJaegeuk Kim /* 25714d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2572e05df3b1SJaegeuk Kim */ 25734d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2574e05df3b1SJaegeuk Kim { 2575e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2576e05df3b1SJaegeuk Kim struct free_nid *i; 2577e05df3b1SJaegeuk Kim 2578b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25798a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2580b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2581a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2582b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2583cf0ee0f0SChao Yu 2584cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2585e05df3b1SJaegeuk Kim } 2586e05df3b1SJaegeuk Kim 25870a8165d7SJaegeuk Kim /* 25884d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2589e05df3b1SJaegeuk Kim */ 25904d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2591e05df3b1SJaegeuk Kim { 259249952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 259349952fa1SJaegeuk Kim struct free_nid *i; 2594cf0ee0f0SChao Yu bool need_free = false; 259549952fa1SJaegeuk Kim 259665985d93SJaegeuk Kim if (!nid) 259765985d93SJaegeuk Kim return; 259865985d93SJaegeuk Kim 2599b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26008a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2601b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2602b8559dc2SChao Yu 26034d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2604a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2605cf0ee0f0SChao Yu need_free = true; 260695630cbaSHaicheng Li } else { 2607a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 260895630cbaSHaicheng Li } 260904d47e67SChao Yu 261004d47e67SChao Yu nm_i->available_nids++; 261104d47e67SChao Yu 2612346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 26134ac91242SChao Yu 2614b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2615cf0ee0f0SChao Yu 2616cf0ee0f0SChao Yu if (need_free) 2617cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2618e05df3b1SJaegeuk Kim } 2619e05df3b1SJaegeuk Kim 26204d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 262131696580SChao Yu { 262231696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 262331696580SChao Yu int nr = nr_shrink; 262431696580SChao Yu 26259a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2626ad4edb83SJaegeuk Kim return 0; 2627ad4edb83SJaegeuk Kim 262831696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 262931696580SChao Yu return 0; 263031696580SChao Yu 2631042be373SChao Yu while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) { 2632042be373SChao Yu struct free_nid *i, *next; 2633042be373SChao Yu unsigned int batch = SHRINK_NID_BATCH_SIZE; 2634042be373SChao Yu 2635b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26369a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2637042be373SChao Yu if (!nr_shrink || !batch || 26389a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 263931696580SChao Yu break; 2640a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 264131696580SChao Yu kmem_cache_free(free_nid_slab, i); 264231696580SChao Yu nr_shrink--; 2643042be373SChao Yu batch--; 264431696580SChao Yu } 2645b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2646042be373SChao Yu } 2647042be373SChao Yu 264831696580SChao Yu mutex_unlock(&nm_i->build_lock); 264931696580SChao Yu 265031696580SChao Yu return nr - nr_shrink; 265131696580SChao Yu } 265231696580SChao Yu 26539627a7b3SChao Yu int f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 265428cdce04SChao Yu { 265528cdce04SChao Yu void *src_addr, *dst_addr; 265628cdce04SChao Yu size_t inline_size; 265728cdce04SChao Yu struct page *ipage; 265828cdce04SChao Yu struct f2fs_inode *ri; 265928cdce04SChao Yu 26604d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 26619627a7b3SChao Yu if (IS_ERR(ipage)) 26629627a7b3SChao Yu return PTR_ERR(ipage); 266328cdce04SChao Yu 2664e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 26651eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 266696dd0251SChao Yu if (!f2fs_has_inline_xattr(inode)) { 26671eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 266896dd0251SChao Yu stat_inc_inline_xattr(inode); 266996dd0251SChao Yu } 26701eca05aaSYunlei He } else { 267196dd0251SChao Yu if (f2fs_has_inline_xattr(inode)) { 267296dd0251SChao Yu stat_dec_inline_xattr(inode); 267391942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 267496dd0251SChao Yu } 2675e3b4d43fSJaegeuk Kim goto update_inode; 2676e3b4d43fSJaegeuk Kim } 2677e3b4d43fSJaegeuk Kim 26786afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 26796afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 268028cdce04SChao Yu inline_size = inline_xattr_size(inode); 268128cdce04SChao Yu 2682bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 268328cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2684e3b4d43fSJaegeuk Kim update_inode: 26854d57b86dSChao Yu f2fs_update_inode(inode, ipage); 268628cdce04SChao Yu f2fs_put_page(ipage, 1); 26879627a7b3SChao Yu return 0; 268828cdce04SChao Yu } 268928cdce04SChao Yu 26904d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2691abb2366cSJaegeuk Kim { 26924081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2693abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 269487905682SYunlei He nid_t new_xnid; 269587905682SYunlei He struct dnode_of_data dn; 2696abb2366cSJaegeuk Kim struct node_info ni; 2697d260081cSChao Yu struct page *xpage; 26987735730dSChao Yu int err; 2699abb2366cSJaegeuk Kim 2700abb2366cSJaegeuk Kim if (!prev_xnid) 2701abb2366cSJaegeuk Kim goto recover_xnid; 2702abb2366cSJaegeuk Kim 2703d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 27047735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 27057735730dSChao Yu if (err) 27067735730dSChao Yu return err; 27077735730dSChao Yu 27084d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2709000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2710479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2711abb2366cSJaegeuk Kim 2712abb2366cSJaegeuk Kim recover_xnid: 2713d260081cSChao Yu /* 2: update xattr nid in inode */ 27144d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 271587905682SYunlei He return -ENOSPC; 271687905682SYunlei He 271787905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 27184d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 271987905682SYunlei He if (IS_ERR(xpage)) { 27204d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 272187905682SYunlei He return PTR_ERR(xpage); 272287905682SYunlei He } 272387905682SYunlei He 27244d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 27254d57b86dSChao Yu f2fs_update_inode_page(inode); 2726abb2366cSJaegeuk Kim 2727d260081cSChao Yu /* 3: update and set xattr node page dirty */ 272887905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2729d260081cSChao Yu 2730d260081cSChao Yu set_page_dirty(xpage); 2731d260081cSChao Yu f2fs_put_page(xpage, 1); 2732abb2366cSJaegeuk Kim 2733d260081cSChao Yu return 0; 2734abb2366cSJaegeuk Kim } 2735abb2366cSJaegeuk Kim 27364d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2737e05df3b1SJaegeuk Kim { 273858bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2739e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2740e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2741e05df3b1SJaegeuk Kim struct page *ipage; 27427735730dSChao Yu int err; 2743e05df3b1SJaegeuk Kim 27447735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 27457735730dSChao Yu if (err) 27467735730dSChao Yu return err; 2747e8271fa3SJaegeuk Kim 2748e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2749e8271fa3SJaegeuk Kim return -EINVAL; 2750e8ea9b3dSJaegeuk Kim retry: 2751300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2752e8ea9b3dSJaegeuk Kim if (!ipage) { 2753*4034247aSNeilBrown memalloc_retry_wait(GFP_NOFS); 2754e8ea9b3dSJaegeuk Kim goto retry; 2755e8ea9b3dSJaegeuk Kim } 2756e05df3b1SJaegeuk Kim 2757e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2758b8559dc2SChao Yu remove_free_nid(sbi, ino); 2759e05df3b1SJaegeuk Kim 2760237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2761e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2762e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2763ef2a0071SChao Yu set_cold_node(ipage, false); 2764e05df3b1SJaegeuk Kim 276558bfaf44SJaegeuk Kim src = F2FS_INODE(page); 276658bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2767e05df3b1SJaegeuk Kim 276836218b81SZheng Yongjun memcpy(dst, src, offsetof(struct f2fs_inode, i_ext)); 276958bfaf44SJaegeuk Kim dst->i_size = 0; 277058bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 277158bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 277258bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 27737a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 27745c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 27757a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 27766afc662eSChao Yu 27777beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 27786afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27796afc662eSChao Yu i_inline_xattr_size)) 27806afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 27816afc662eSChao Yu 27827beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 27835c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27845c57132eSChao Yu i_projid)) 27855c57132eSChao Yu dst->i_projid = src->i_projid; 27865cd1f387SChao Yu 27877beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 27885cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27895cd1f387SChao Yu i_crtime_nsec)) { 27905cd1f387SChao Yu dst->i_crtime = src->i_crtime; 27915cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 27925cd1f387SChao Yu } 27935c57132eSChao Yu } 2794e05df3b1SJaegeuk Kim 2795e05df3b1SJaegeuk Kim new_ni = old_ni; 2796e05df3b1SJaegeuk Kim new_ni.ino = ino; 2797e05df3b1SJaegeuk Kim 27980abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 279965e5cd0aSJaegeuk Kim WARN_ON(1); 2800479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2801e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2802617deb8cSJaegeuk Kim set_page_dirty(ipage); 2803e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2804e05df3b1SJaegeuk Kim return 0; 2805e05df3b1SJaegeuk Kim } 2806e05df3b1SJaegeuk Kim 28077735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2808e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2809e05df3b1SJaegeuk Kim { 2810e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2811e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2812e05df3b1SJaegeuk Kim block_t addr; 28139ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2814e05df3b1SJaegeuk Kim 2815e05df3b1SJaegeuk Kim /* scan the node segment */ 2816e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2817e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2818e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2819e05df3b1SJaegeuk Kim 28209ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 28215f7136dbSMatthew Wilcox (Oracle) nrpages = bio_max_segs(last_offset - i); 2822393ff91fSJaegeuk Kim 28239af0ff1cSChao Yu /* readahead node pages */ 28244d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 28259af0ff1cSChao Yu 28269ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 28274d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2828393ff91fSJaegeuk Kim 28297735730dSChao Yu if (IS_ERR(page)) 28307735730dSChao Yu return PTR_ERR(page); 28317735730dSChao Yu 28329ecf4b80SChao Yu rn = F2FS_NODE(page); 2833393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2834393ff91fSJaegeuk Kim sum_entry->version = 0; 2835393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 28369af0ff1cSChao Yu sum_entry++; 28379ecf4b80SChao Yu f2fs_put_page(page, 1); 28389af0ff1cSChao Yu } 2839bac4eef6SChao Yu 28409ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2841bac4eef6SChao Yu addr + nrpages); 28429af0ff1cSChao Yu } 28437735730dSChao Yu return 0; 2844e05df3b1SJaegeuk Kim } 2845e05df3b1SJaegeuk Kim 2846aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2847e05df3b1SJaegeuk Kim { 2848e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2849e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2850b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2851e05df3b1SJaegeuk Kim int i; 2852e05df3b1SJaegeuk Kim 2853b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2854dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2855e05df3b1SJaegeuk Kim struct nat_entry *ne; 2856e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2857dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2858e05df3b1SJaegeuk Kim 2859b862676eSChao Yu if (f2fs_check_nid_range(sbi, nid)) 2860b862676eSChao Yu continue; 2861b862676eSChao Yu 2862dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 28639be32d72SJaegeuk Kim 2864e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2865e05df3b1SJaegeuk Kim if (!ne) { 286632410577SChao Yu ne = __alloc_nat_entry(sbi, nid, true); 286712f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 28689be32d72SJaegeuk Kim } 286904d47e67SChao Yu 287004d47e67SChao Yu /* 287104d47e67SChao Yu * if a free nat in journal has not been used after last 287204d47e67SChao Yu * checkpoint, we should remove it from available nids, 287304d47e67SChao Yu * since later we will add it again. 287404d47e67SChao Yu */ 287504d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 287604d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 287704d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 287804d47e67SChao Yu nm_i->available_nids--; 287904d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 288004d47e67SChao Yu } 288104d47e67SChao Yu 2882e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2883e05df3b1SJaegeuk Kim } 2884dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2885b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2886e05df3b1SJaegeuk Kim } 2887e05df3b1SJaegeuk Kim 2888309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2889309cc2b6SJaegeuk Kim struct list_head *head, int max) 2890e05df3b1SJaegeuk Kim { 2891309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2892e05df3b1SJaegeuk Kim 2893309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2894309cc2b6SJaegeuk Kim goto add_out; 2895e05df3b1SJaegeuk Kim 2896309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2897309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2898309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2899309cc2b6SJaegeuk Kim return; 2900309cc2b6SJaegeuk Kim } 2901309cc2b6SJaegeuk Kim } 2902309cc2b6SJaegeuk Kim add_out: 2903309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2904aec71382SChao Yu } 2905aec71382SChao Yu 290694c821fbSChao Yu static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs, 290794c821fbSChao Yu unsigned int valid) 290894c821fbSChao Yu { 290994c821fbSChao Yu if (valid == 0) { 291094c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->empty_nat_bits); 291194c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 291294c821fbSChao Yu return; 291394c821fbSChao Yu } 291494c821fbSChao Yu 291594c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->empty_nat_bits); 291694c821fbSChao Yu if (valid == NAT_ENTRY_PER_BLOCK) 291794c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->full_nat_bits); 291894c821fbSChao Yu else 291994c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 292094c821fbSChao Yu } 292194c821fbSChao Yu 292294c821fbSChao Yu static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 292322ad0b6aSJaegeuk Kim struct page *page) 292422ad0b6aSJaegeuk Kim { 292522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 292622ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 292722ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 292822ad0b6aSJaegeuk Kim int valid = 0; 292937a0ab2aSFan Li int i = 0; 293022ad0b6aSJaegeuk Kim 293194c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 293222ad0b6aSJaegeuk Kim return; 293322ad0b6aSJaegeuk Kim 293437a0ab2aSFan Li if (nat_index == 0) { 293537a0ab2aSFan Li valid = 1; 293637a0ab2aSFan Li i = 1; 293737a0ab2aSFan Li } 293837a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 293936af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 294022ad0b6aSJaegeuk Kim valid++; 294122ad0b6aSJaegeuk Kim } 294294c821fbSChao Yu 294394c821fbSChao Yu __update_nat_bits(nm_i, nat_index, valid); 294422ad0b6aSJaegeuk Kim } 294522ad0b6aSJaegeuk Kim 294694c821fbSChao Yu void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi) 294794c821fbSChao Yu { 294894c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 294994c821fbSChao Yu unsigned int nat_ofs; 295094c821fbSChao Yu 295194c821fbSChao Yu down_read(&nm_i->nat_tree_lock); 295294c821fbSChao Yu 295394c821fbSChao Yu for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) { 295494c821fbSChao Yu unsigned int valid = 0, nid_ofs = 0; 295594c821fbSChao Yu 295694c821fbSChao Yu /* handle nid zero due to it should never be used */ 295794c821fbSChao Yu if (unlikely(nat_ofs == 0)) { 295894c821fbSChao Yu valid = 1; 295994c821fbSChao Yu nid_ofs = 1; 296094c821fbSChao Yu } 296194c821fbSChao Yu 296294c821fbSChao Yu for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) { 296394c821fbSChao Yu if (!test_bit_le(nid_ofs, 296494c821fbSChao Yu nm_i->free_nid_bitmap[nat_ofs])) 296594c821fbSChao Yu valid++; 296694c821fbSChao Yu } 296794c821fbSChao Yu 296894c821fbSChao Yu __update_nat_bits(nm_i, nat_ofs, valid); 296994c821fbSChao Yu } 297094c821fbSChao Yu 297194c821fbSChao Yu up_read(&nm_i->nat_tree_lock); 297222ad0b6aSJaegeuk Kim } 297322ad0b6aSJaegeuk Kim 2974edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 297522ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2976309cc2b6SJaegeuk Kim { 2977309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2978b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2979309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2980309cc2b6SJaegeuk Kim bool to_journal = true; 2981309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2982309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2983309cc2b6SJaegeuk Kim struct page *page = NULL; 2984aec71382SChao Yu 2985aec71382SChao Yu /* 2986aec71382SChao Yu * there are two steps to flush nat entries: 2987aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2988aec71382SChao Yu * #2, flush nat entries to nat page. 2989aec71382SChao Yu */ 299094c821fbSChao Yu if ((cpc->reason & CP_UMOUNT) || 299122ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2992aec71382SChao Yu to_journal = false; 2993aec71382SChao Yu 2994aec71382SChao Yu if (to_journal) { 2995b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2996aec71382SChao Yu } else { 2997e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2998edc55aafSJaegeuk Kim if (IS_ERR(page)) 2999edc55aafSJaegeuk Kim return PTR_ERR(page); 3000edc55aafSJaegeuk Kim 3001e05df3b1SJaegeuk Kim nat_blk = page_address(page); 30029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 3003e05df3b1SJaegeuk Kim } 3004e05df3b1SJaegeuk Kim 3005aec71382SChao Yu /* flush dirty nats in nat entry set */ 3006309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 3007aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 3008aec71382SChao Yu nid_t nid = nat_get_nid(ne); 3009aec71382SChao Yu int offset; 3010aec71382SChao Yu 3011febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 3012309cc2b6SJaegeuk Kim 3013aec71382SChao Yu if (to_journal) { 30144d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 3015aec71382SChao Yu NAT_JOURNAL, nid, 1); 30169850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 3017dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 3018dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 3019aec71382SChao Yu } else { 3020aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 3021aec71382SChao Yu } 3022aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 302388bd02c9SJaegeuk Kim nat_reset_flag(ne); 30240b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 302504d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 30265921aaa1SLiFan add_free_nid(sbi, nid, false, true); 30274ac91242SChao Yu } else { 30284ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 3029346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 303004d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 303104d47e67SChao Yu } 3032e05df3b1SJaegeuk Kim } 3033aec71382SChao Yu 303422ad0b6aSJaegeuk Kim if (to_journal) { 3035b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 303622ad0b6aSJaegeuk Kim } else { 303794c821fbSChao Yu update_nat_bits(sbi, start_nid, page); 3038e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 303922ad0b6aSJaegeuk Kim } 3040aec71382SChao Yu 304159c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 304259c9081bSYunlei He if (!set->entry_cnt) { 3043309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 3044309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 3045309cc2b6SJaegeuk Kim } 3046edc55aafSJaegeuk Kim return 0; 304759c9081bSYunlei He } 3048aec71382SChao Yu 3049309cc2b6SJaegeuk Kim /* 3050309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 3051309cc2b6SJaegeuk Kim */ 3052edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 3053309cc2b6SJaegeuk Kim { 3054309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3055309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 3056b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 30577aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3058309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 3059309cc2b6SJaegeuk Kim unsigned int found; 3060309cc2b6SJaegeuk Kim nid_t set_idx = 0; 3061309cc2b6SJaegeuk Kim LIST_HEAD(sets); 3062edc55aafSJaegeuk Kim int err = 0; 3063309cc2b6SJaegeuk Kim 3064a95ba66aSJaegeuk Kim /* 3065a95ba66aSJaegeuk Kim * during unmount, let's flush nat_bits before checking 3066a95ba66aSJaegeuk Kim * nat_cnt[DIRTY_NAT]. 3067a95ba66aSJaegeuk Kim */ 306894c821fbSChao Yu if (cpc->reason & CP_UMOUNT) { 30697f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 30707f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 30717f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 30727f2ecdd8SJaegeuk Kim } 30737f2ecdd8SJaegeuk Kim 3074a95ba66aSJaegeuk Kim if (!nm_i->nat_cnt[DIRTY_NAT]) 3075edc55aafSJaegeuk Kim return 0; 3076a5131193SJaegeuk Kim 3077b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3078a5131193SJaegeuk Kim 3079309cc2b6SJaegeuk Kim /* 3080309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 3081309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 3082309cc2b6SJaegeuk Kim * into nat entry set. 3083309cc2b6SJaegeuk Kim */ 308494c821fbSChao Yu if (cpc->reason & CP_UMOUNT || 3085a95ba66aSJaegeuk Kim !__has_cursum_space(journal, 3086a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL)) 3087309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 3088309cc2b6SJaegeuk Kim 3089309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 30907aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 3091309cc2b6SJaegeuk Kim unsigned idx; 30925f029c04SYi Zhuang 3093309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 3094309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 3095309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 3096dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 3097309cc2b6SJaegeuk Kim } 3098309cc2b6SJaegeuk Kim 3099309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 3100edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 3101edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 3102edc55aafSJaegeuk Kim if (err) 3103edc55aafSJaegeuk Kim break; 3104edc55aafSJaegeuk Kim } 3105309cc2b6SJaegeuk Kim 3106b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 310759c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 3108edc55aafSJaegeuk Kim 3109edc55aafSJaegeuk Kim return err; 3110e05df3b1SJaegeuk Kim } 3111e05df3b1SJaegeuk Kim 311222ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 311322ad0b6aSJaegeuk Kim { 311422ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 311522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 311622ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 311722ad0b6aSJaegeuk Kim unsigned int i; 311822ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 311922ad0b6aSJaegeuk Kim block_t nat_bits_addr; 312022ad0b6aSJaegeuk Kim 3121df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 31220b6d4ca0SEric Biggers nm_i->nat_bits = f2fs_kvzalloc(sbi, 3123acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 312422ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 312522ad0b6aSJaegeuk Kim return -ENOMEM; 312622ad0b6aSJaegeuk Kim 312794c821fbSChao Yu nm_i->full_nat_bits = nm_i->nat_bits + 8; 312894c821fbSChao Yu nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 312994c821fbSChao Yu 313094c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 313194c821fbSChao Yu return 0; 313294c821fbSChao Yu 313322ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 313422ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 313522ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 31367735730dSChao Yu struct page *page; 31377735730dSChao Yu 31387735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 31393b30eb19SChao Yu if (IS_ERR(page)) 31407735730dSChao Yu return PTR_ERR(page); 314122ad0b6aSJaegeuk Kim 314222ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 314322ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 314422ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 314522ad0b6aSJaegeuk Kim } 314622ad0b6aSJaegeuk Kim 3147ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 314822ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 314994c821fbSChao Yu clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG); 315094c821fbSChao Yu f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)", 315194c821fbSChao Yu cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits)); 315222ad0b6aSJaegeuk Kim return 0; 315322ad0b6aSJaegeuk Kim } 315422ad0b6aSJaegeuk Kim 3155dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 315622ad0b6aSJaegeuk Kim return 0; 315722ad0b6aSJaegeuk Kim } 315822ad0b6aSJaegeuk Kim 3159bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 31607041d5d2SChao Yu { 31617041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31627041d5d2SChao Yu unsigned int i = 0; 31637041d5d2SChao Yu nid_t nid, last_nid; 31647041d5d2SChao Yu 316594c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 31667041d5d2SChao Yu return; 31677041d5d2SChao Yu 31687041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31697041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 31707041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31717041d5d2SChao Yu break; 31727041d5d2SChao Yu 31737041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31747041d5d2SChao Yu 31757041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 3176f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 31777041d5d2SChao Yu 3178346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 31797041d5d2SChao Yu for (; nid < last_nid; nid++) 3180346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 3181346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 31827041d5d2SChao Yu } 31837041d5d2SChao Yu 31847041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31857041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 31867041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31877041d5d2SChao Yu break; 31887041d5d2SChao Yu 31897041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31907041d5d2SChao Yu } 31917041d5d2SChao Yu } 31927041d5d2SChao Yu 3193e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3194e05df3b1SJaegeuk Kim { 3195e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3196e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3197e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 319822ad0b6aSJaegeuk Kim unsigned int nat_segs; 319922ad0b6aSJaegeuk Kim int err; 3200e05df3b1SJaegeuk Kim 3201e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3202e05df3b1SJaegeuk Kim 3203e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3204e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 320522ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 320622ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 32077ee0eeabSJaegeuk Kim 3208b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 320904d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 321027cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 32119a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 32129a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3213cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3214ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 32152304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 3216e05df3b1SJaegeuk Kim 32178a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 32189a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3219769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3220769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3221e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 322222969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3223e05df3b1SJaegeuk Kim 3224e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3225b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3226b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 3227e05df3b1SJaegeuk Kim 3228e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 322979b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3230e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 323179b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 323279b5793bSAlexandru Gheorghiu GFP_KERNEL); 323379b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 323479b5793bSAlexandru Gheorghiu return -ENOMEM; 3235599a09b2SChao Yu 323622ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 323722ad0b6aSJaegeuk Kim if (err) 323822ad0b6aSJaegeuk Kim return err; 323922ad0b6aSJaegeuk Kim 3240599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3241599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3242599a09b2SChao Yu GFP_KERNEL); 3243599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3244599a09b2SChao Yu return -ENOMEM; 3245599a09b2SChao Yu #endif 3246599a09b2SChao Yu 3247e05df3b1SJaegeuk Kim return 0; 3248e05df3b1SJaegeuk Kim } 3249e05df3b1SJaegeuk Kim 32509f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 32514ac91242SChao Yu { 32524ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3253bb1105e4SJaegeuk Kim int i; 32544ac91242SChao Yu 3255026f0507SKees Cook nm_i->free_nid_bitmap = 32560b6d4ca0SEric Biggers f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *), 3257026f0507SKees Cook nm_i->nat_blocks), 3258026f0507SKees Cook GFP_KERNEL); 32594ac91242SChao Yu if (!nm_i->free_nid_bitmap) 32604ac91242SChao Yu return -ENOMEM; 32614ac91242SChao Yu 3262bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3263bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3264e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 326568c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3266bb1105e4SJaegeuk Kim return -ENOMEM; 3267bb1105e4SJaegeuk Kim } 3268bb1105e4SJaegeuk Kim 3269628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 32704ac91242SChao Yu GFP_KERNEL); 32714ac91242SChao Yu if (!nm_i->nat_block_bitmap) 32724ac91242SChao Yu return -ENOMEM; 3273586d1492SChao Yu 32749d2a789cSKees Cook nm_i->free_nid_count = 32759d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 32769d2a789cSKees Cook nm_i->nat_blocks), 32779d2a789cSKees Cook GFP_KERNEL); 3278586d1492SChao Yu if (!nm_i->free_nid_count) 3279586d1492SChao Yu return -ENOMEM; 32804ac91242SChao Yu return 0; 32814ac91242SChao Yu } 32824ac91242SChao Yu 32834d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3284e05df3b1SJaegeuk Kim { 3285e05df3b1SJaegeuk Kim int err; 3286e05df3b1SJaegeuk Kim 3287acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3288acbf054dSChao Yu GFP_KERNEL); 3289e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3290e05df3b1SJaegeuk Kim return -ENOMEM; 3291e05df3b1SJaegeuk Kim 3292e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3293e05df3b1SJaegeuk Kim if (err) 3294e05df3b1SJaegeuk Kim return err; 3295e05df3b1SJaegeuk Kim 32964ac91242SChao Yu err = init_free_nid_cache(sbi); 32974ac91242SChao Yu if (err) 32984ac91242SChao Yu return err; 32994ac91242SChao Yu 33007041d5d2SChao Yu /* load free nid status from nat_bits table */ 33017041d5d2SChao Yu load_free_nid_bitmap(sbi); 33027041d5d2SChao Yu 3303e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3304e05df3b1SJaegeuk Kim } 3305e05df3b1SJaegeuk Kim 33064d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3307e05df3b1SJaegeuk Kim { 3308e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3309e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3310e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 33117aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3312e05df3b1SJaegeuk Kim nid_t nid = 0; 3313e05df3b1SJaegeuk Kim unsigned int found; 3314e05df3b1SJaegeuk Kim 3315e05df3b1SJaegeuk Kim if (!nm_i) 3316e05df3b1SJaegeuk Kim return; 3317e05df3b1SJaegeuk Kim 3318e05df3b1SJaegeuk Kim /* destroy free nid list */ 3319b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 33209a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3321a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3322b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3323cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3324b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3325e05df3b1SJaegeuk Kim } 33269a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 33279a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 33289a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3329b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3330e05df3b1SJaegeuk Kim 3331e05df3b1SJaegeuk Kim /* destroy nat cache */ 3332b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3333e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3334e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3335e05df3b1SJaegeuk Kim unsigned idx; 33367aed0d45SJaegeuk Kim 3337b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 333822969158SChao Yu for (idx = 0; idx < found; idx++) { 333922969158SChao Yu spin_lock(&nm_i->nat_list_lock); 334022969158SChao Yu list_del(&natvec[idx]->list); 334122969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 334222969158SChao Yu 3343b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3344e05df3b1SJaegeuk Kim } 334522969158SChao Yu } 3346a95ba66aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]); 33477aed0d45SJaegeuk Kim 33487aed0d45SJaegeuk Kim /* destroy nat set cache */ 33497aed0d45SJaegeuk Kim nid = 0; 33507aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 33517aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 33527aed0d45SJaegeuk Kim unsigned idx; 33537aed0d45SJaegeuk Kim 33547aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 33557aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 33567aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 33577aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 33587aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 33597aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 33607aed0d45SJaegeuk Kim } 33617aed0d45SJaegeuk Kim } 3362b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3363e05df3b1SJaegeuk Kim 33644ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3365bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3366bb1105e4SJaegeuk Kim int i; 3367bb1105e4SJaegeuk Kim 3368bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3369bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 33705222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3371bb1105e4SJaegeuk Kim } 3372586d1492SChao Yu kvfree(nm_i->free_nid_count); 33734ac91242SChao Yu 33745222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 33755222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3376599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 33775222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3378599a09b2SChao Yu #endif 3379e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3380c8eb7024SChao Yu kfree(nm_i); 3381e05df3b1SJaegeuk Kim } 3382e05df3b1SJaegeuk Kim 33834d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3384e05df3b1SJaegeuk Kim { 338598510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3386e8512d2eSGu Zheng sizeof(struct nat_entry)); 3387e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3388aec71382SChao Yu goto fail; 3389e05df3b1SJaegeuk Kim 339098510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3391e8512d2eSGu Zheng sizeof(struct free_nid)); 3392aec71382SChao Yu if (!free_nid_slab) 3393ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3394aec71382SChao Yu 339598510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3396aec71382SChao Yu sizeof(struct nat_entry_set)); 3397aec71382SChao Yu if (!nat_entry_set_slab) 3398ce3e6d25SMarkus Elfring goto destroy_free_nid; 339950fa53ecSChao Yu 340098510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 340150fa53ecSChao Yu sizeof(struct fsync_node_entry)); 340250fa53ecSChao Yu if (!fsync_node_entry_slab) 340350fa53ecSChao Yu goto destroy_nat_entry_set; 3404e05df3b1SJaegeuk Kim return 0; 3405aec71382SChao Yu 340650fa53ecSChao Yu destroy_nat_entry_set: 340750fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3408ce3e6d25SMarkus Elfring destroy_free_nid: 3409aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3410ce3e6d25SMarkus Elfring destroy_nat_entry: 3411aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3412aec71382SChao Yu fail: 3413aec71382SChao Yu return -ENOMEM; 3414e05df3b1SJaegeuk Kim } 3415e05df3b1SJaegeuk Kim 34164d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3417e05df3b1SJaegeuk Kim { 341850fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3419aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3420e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3421e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3422e05df3b1SJaegeuk Kim } 3423