17c1a000dSChao Yu // SPDX-License-Identifier: GPL-2.0 20a8165d7SJaegeuk Kim /* 3e05df3b1SJaegeuk Kim * fs/f2fs/node.c 4e05df3b1SJaegeuk Kim * 5e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6e05df3b1SJaegeuk Kim * http://www.samsung.com/ 7e05df3b1SJaegeuk Kim */ 8e05df3b1SJaegeuk Kim #include <linux/fs.h> 9e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 10e05df3b1SJaegeuk Kim #include <linux/mpage.h> 114034247aSNeilBrown #include <linux/sched/mm.h> 12e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 13e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 14e05df3b1SJaegeuk Kim #include <linux/swap.h> 15e05df3b1SJaegeuk Kim 16e05df3b1SJaegeuk Kim #include "f2fs.h" 17e05df3b1SJaegeuk Kim #include "node.h" 18e05df3b1SJaegeuk Kim #include "segment.h" 1987905682SYunlei He #include "xattr.h" 2052118743SDaeho Jeong #include "iostat.h" 2151dd6249SNamjae Jeon #include <trace/events/f2fs.h> 22e05df3b1SJaegeuk Kim 234d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 24f978f5a0SGu Zheng 25e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 26e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 27aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 2850fa53ecSChao Yu static struct kmem_cache *fsync_node_entry_slab; 29e05df3b1SJaegeuk Kim 30a4f843bdSJaegeuk Kim /* 31a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 32a4f843bdSJaegeuk Kim */ 334d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 34a4f843bdSJaegeuk Kim { 35a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 36a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 37dcbb4c10SJoe Perches f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.", 38a4f843bdSJaegeuk Kim __func__, nid); 3995fa90c9SChao Yu f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); 4010f966bbSChao Yu return -EFSCORRUPTED; 41a4f843bdSJaegeuk Kim } 42a4f843bdSJaegeuk Kim return 0; 43a4f843bdSJaegeuk Kim } 44a4f843bdSJaegeuk Kim 454d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 46cdfc41c1SJaegeuk Kim { 476fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 48d6d2b491SSahitya Tummala struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 49cdfc41c1SJaegeuk Kim struct sysinfo val; 50e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 51cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 526fb03f3aSJaegeuk Kim bool res = false; 53cdfc41c1SJaegeuk Kim 54d6d2b491SSahitya Tummala if (!nm_i) 55d6d2b491SSahitya Tummala return true; 56d6d2b491SSahitya Tummala 57cdfc41c1SJaegeuk Kim si_meminfo(&val); 58e5e7ea3cSJaegeuk Kim 59e5e7ea3cSJaegeuk Kim /* only uses low memory */ 60e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 61e5e7ea3cSJaegeuk Kim 62429511cdSChao Yu /* 63429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 64429511cdSChao Yu */ 656fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 669a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 67b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 68e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 696fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 70a95ba66aSJaegeuk Kim mem_size = (nm_i->nat_cnt[TOTAL_NAT] * 71a95ba66aSJaegeuk Kim sizeof(struct nat_entry)) >> PAGE_SHIFT; 72e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 73e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 74e589c2c4SJaegeuk Kim res = false; 75a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 76a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 77a1257023SJaegeuk Kim return false; 78a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 79a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 80e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 81e5e7ea3cSJaegeuk Kim int i; 82e5e7ea3cSJaegeuk Kim 8339d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 848f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 858f73cbb7SKinglong Mee sizeof(struct ino_entry); 868f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 87e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 8812607c1bSJaegeuk Kim } else if (type == READ_EXTENT_CACHE) { 89*e7547dacSJaegeuk Kim struct extent_tree_info *eti = &sbi->extent_tree[EX_READ]; 90*e7547dacSJaegeuk Kim 91*e7547dacSJaegeuk Kim mem_size = (atomic_read(&eti->total_ext_tree) * 927441ccefSJaegeuk Kim sizeof(struct extent_tree) + 93*e7547dacSJaegeuk Kim atomic_read(&eti->total_ext_node) * 9409cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 95429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 96d6d2b491SSahitya Tummala } else if (type == DISCARD_CACHE) { 97d6d2b491SSahitya Tummala mem_size = (atomic_read(&dcc->discard_cmd_cnt) * 98d6d2b491SSahitya Tummala sizeof(struct discard_cmd)) >> PAGE_SHIFT; 99d6d2b491SSahitya Tummala res = mem_size < (avail_ram * nm_i->ram_thresh / 100); 1006ce19affSChao Yu } else if (type == COMPRESS_PAGE) { 1016ce19affSChao Yu #ifdef CONFIG_F2FS_FS_COMPRESSION 1026ce19affSChao Yu unsigned long free_ram = val.freeram; 1036ce19affSChao Yu 1046ce19affSChao Yu /* 1056ce19affSChao Yu * free memory is lower than watermark or cached page count 1066ce19affSChao Yu * exceed threshold, deny caching compress page. 1076ce19affSChao Yu */ 1086ce19affSChao Yu res = (free_ram > avail_ram * sbi->compress_watermark / 100) && 1096ce19affSChao Yu (COMPRESS_MAPPING(sbi)->nrpages < 1106ce19affSChao Yu free_ram * sbi->compress_percent / 100); 1116ce19affSChao Yu #else 1126ce19affSChao Yu res = false; 1136ce19affSChao Yu #endif 1141e84371fSJaegeuk Kim } else { 1151663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 1161663cae4SJaegeuk Kim return true; 1176fb03f3aSJaegeuk Kim } 1186fb03f3aSJaegeuk Kim return res; 119cdfc41c1SJaegeuk Kim } 120cdfc41c1SJaegeuk Kim 121e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 122e05df3b1SJaegeuk Kim { 123e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1245ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 125e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 126aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 127e05df3b1SJaegeuk Kim } 128e05df3b1SJaegeuk Kim ClearPageUptodate(page); 129e05df3b1SJaegeuk Kim } 130e05df3b1SJaegeuk Kim 131e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 132e05df3b1SJaegeuk Kim { 1333acc4522SJaegeuk Kim return f2fs_get_meta_page_retry(sbi, current_nat_addr(sbi, nid)); 134e05df3b1SJaegeuk Kim } 135e05df3b1SJaegeuk Kim 136e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 137e05df3b1SJaegeuk Kim { 138e05df3b1SJaegeuk Kim struct page *src_page; 139e05df3b1SJaegeuk Kim struct page *dst_page; 140e05df3b1SJaegeuk Kim pgoff_t dst_off; 141e05df3b1SJaegeuk Kim void *src_addr; 142e05df3b1SJaegeuk Kim void *dst_addr; 143e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 144e05df3b1SJaegeuk Kim 14580551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 146e05df3b1SJaegeuk Kim 147e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 14880551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 149edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 150edc55aafSJaegeuk Kim return src_page; 1514d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1529850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 153e05df3b1SJaegeuk Kim 154e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 155e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 15609cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 157e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 158e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 159e05df3b1SJaegeuk Kim 160e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 161e05df3b1SJaegeuk Kim 162e05df3b1SJaegeuk Kim return dst_page; 163e05df3b1SJaegeuk Kim } 164e05df3b1SJaegeuk Kim 16532410577SChao Yu static struct nat_entry *__alloc_nat_entry(struct f2fs_sb_info *sbi, 16632410577SChao Yu nid_t nid, bool no_fail) 16712f9ef37SYunlei He { 16812f9ef37SYunlei He struct nat_entry *new; 16912f9ef37SYunlei He 17032410577SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, 17132410577SChao Yu GFP_F2FS_ZERO, no_fail, sbi); 17212f9ef37SYunlei He if (new) { 17312f9ef37SYunlei He nat_set_nid(new, nid); 17412f9ef37SYunlei He nat_reset_flag(new); 17512f9ef37SYunlei He } 17612f9ef37SYunlei He return new; 17712f9ef37SYunlei He } 17812f9ef37SYunlei He 17912f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 18012f9ef37SYunlei He { 18112f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 18212f9ef37SYunlei He } 18312f9ef37SYunlei He 18412f9ef37SYunlei He /* must be locked by nat_tree_lock */ 18512f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 18612f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 18712f9ef37SYunlei He { 18812f9ef37SYunlei He if (no_fail) 18912f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 19012f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 19112f9ef37SYunlei He return NULL; 19212f9ef37SYunlei He 19312f9ef37SYunlei He if (raw_ne) 19412f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 19522969158SChao Yu 19622969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19712f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 19822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 19922969158SChao Yu 200a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]++; 201a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 20212f9ef37SYunlei He return ne; 20312f9ef37SYunlei He } 20412f9ef37SYunlei He 205e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 206e05df3b1SJaegeuk Kim { 20722969158SChao Yu struct nat_entry *ne; 20822969158SChao Yu 20922969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 21022969158SChao Yu 21122969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 21222969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 21322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 21422969158SChao Yu if (!list_empty(&ne->list)) 21522969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 21622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 21722969158SChao Yu } 21822969158SChao Yu 21922969158SChao Yu return ne; 220e05df3b1SJaegeuk Kim } 221e05df3b1SJaegeuk Kim 222e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 223e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 224e05df3b1SJaegeuk Kim { 225e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 226e05df3b1SJaegeuk Kim } 227e05df3b1SJaegeuk Kim 228e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 229e05df3b1SJaegeuk Kim { 230e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 231a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]--; 232a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 23312f9ef37SYunlei He __free_nat_entry(e); 234e05df3b1SJaegeuk Kim } 235e05df3b1SJaegeuk Kim 236780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 237309cc2b6SJaegeuk Kim struct nat_entry *ne) 238309cc2b6SJaegeuk Kim { 239309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 240309cc2b6SJaegeuk Kim struct nat_entry_set *head; 241309cc2b6SJaegeuk Kim 242309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 243309cc2b6SJaegeuk Kim if (!head) { 24432410577SChao Yu head = f2fs_kmem_cache_alloc(nat_entry_set_slab, 24532410577SChao Yu GFP_NOFS, true, NULL); 246309cc2b6SJaegeuk Kim 247309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 248309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 249309cc2b6SJaegeuk Kim head->set = set; 250309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2519be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 252309cc2b6SJaegeuk Kim } 253780de47cSChao Yu return head; 254780de47cSChao Yu } 255780de47cSChao Yu 256780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 257780de47cSChao Yu struct nat_entry *ne) 258780de47cSChao Yu { 259780de47cSChao Yu struct nat_entry_set *head; 260780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 261780de47cSChao Yu 262780de47cSChao Yu if (!new_ne) 263780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 264780de47cSChao Yu 265780de47cSChao Yu /* 266780de47cSChao Yu * update entry_cnt in below condition: 267780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 268780de47cSChao Yu * 2. update old block address to new one; 269780de47cSChao Yu */ 270780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 271780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 272780de47cSChao Yu head->entry_cnt++; 273780de47cSChao Yu 274780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 275febeca6dSChao Yu 276febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 277febeca6dSChao Yu goto refresh_list; 278febeca6dSChao Yu 279a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]++; 280a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 281309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 282febeca6dSChao Yu refresh_list: 28322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 284780de47cSChao Yu if (new_ne) 285febeca6dSChao Yu list_del_init(&ne->list); 286febeca6dSChao Yu else 287febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 28822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 289309cc2b6SJaegeuk Kim } 290309cc2b6SJaegeuk Kim 291309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2920b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 293309cc2b6SJaegeuk Kim { 29422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 295309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 29622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 29722969158SChao Yu 298309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2990b28b71eSKinglong Mee set->entry_cnt--; 300a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]--; 301a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 302309cc2b6SJaegeuk Kim } 303309cc2b6SJaegeuk Kim 304309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 305309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 306309cc2b6SJaegeuk Kim { 307309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 308309cc2b6SJaegeuk Kim start, nr); 309309cc2b6SJaegeuk Kim } 310309cc2b6SJaegeuk Kim 31150fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 31250fa53ecSChao Yu { 31350fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 31450fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 31550fa53ecSChao Yu } 31650fa53ecSChao Yu 31750fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 31850fa53ecSChao Yu { 31950fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 32050fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 32150fa53ecSChao Yu sbi->fsync_seg_id = 0; 32250fa53ecSChao Yu sbi->fsync_node_num = 0; 32350fa53ecSChao Yu } 32450fa53ecSChao Yu 32550fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 32650fa53ecSChao Yu struct page *page) 32750fa53ecSChao Yu { 32850fa53ecSChao Yu struct fsync_node_entry *fn; 32950fa53ecSChao Yu unsigned long flags; 33050fa53ecSChao Yu unsigned int seq_id; 33150fa53ecSChao Yu 33232410577SChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, 33332410577SChao Yu GFP_NOFS, true, NULL); 33450fa53ecSChao Yu 33550fa53ecSChao Yu get_page(page); 33650fa53ecSChao Yu fn->page = page; 33750fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 33850fa53ecSChao Yu 33950fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 34050fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 34150fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 34250fa53ecSChao Yu seq_id = fn->seq_id; 34350fa53ecSChao Yu sbi->fsync_node_num++; 34450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34550fa53ecSChao Yu 34650fa53ecSChao Yu return seq_id; 34750fa53ecSChao Yu } 34850fa53ecSChao Yu 34950fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 35050fa53ecSChao Yu { 35150fa53ecSChao Yu struct fsync_node_entry *fn; 35250fa53ecSChao Yu unsigned long flags; 35350fa53ecSChao Yu 35450fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 35550fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 35650fa53ecSChao Yu if (fn->page == page) { 35750fa53ecSChao Yu list_del(&fn->list); 35850fa53ecSChao Yu sbi->fsync_node_num--; 35950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36050fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 36150fa53ecSChao Yu put_page(page); 36250fa53ecSChao Yu return; 36350fa53ecSChao Yu } 36450fa53ecSChao Yu } 36550fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36650fa53ecSChao Yu f2fs_bug_on(sbi, 1); 36750fa53ecSChao Yu } 36850fa53ecSChao Yu 36950fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 37050fa53ecSChao Yu { 37150fa53ecSChao Yu unsigned long flags; 37250fa53ecSChao Yu 37350fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 37450fa53ecSChao Yu sbi->fsync_seg_id = 0; 37550fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 37650fa53ecSChao Yu } 37750fa53ecSChao Yu 3784d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3792dcf51abSJaegeuk Kim { 3802dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3812dcf51abSJaegeuk Kim struct nat_entry *e; 3822dcf51abSJaegeuk Kim bool need = false; 3832dcf51abSJaegeuk Kim 384e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 3852dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3862dcf51abSJaegeuk Kim if (e) { 3872dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3882dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3892dcf51abSJaegeuk Kim need = true; 3902dcf51abSJaegeuk Kim } 391e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 3922dcf51abSJaegeuk Kim return need; 3932dcf51abSJaegeuk Kim } 3942dcf51abSJaegeuk Kim 3954d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 396e05df3b1SJaegeuk Kim { 397e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 398e05df3b1SJaegeuk Kim struct nat_entry *e; 39988bd02c9SJaegeuk Kim bool is_cp = true; 400e05df3b1SJaegeuk Kim 401e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 402e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 4037ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 40488bd02c9SJaegeuk Kim is_cp = false; 405e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 406e05df3b1SJaegeuk Kim return is_cp; 407e05df3b1SJaegeuk Kim } 408e05df3b1SJaegeuk Kim 4094d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 410b6fe5873SJaegeuk Kim { 411b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 412b6fe5873SJaegeuk Kim struct nat_entry *e; 41388bd02c9SJaegeuk Kim bool need_update = true; 414b6fe5873SJaegeuk Kim 415e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 41688bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 41788bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 41888bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 41988bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 42088bd02c9SJaegeuk Kim need_update = false; 421e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 42288bd02c9SJaegeuk Kim return need_update; 423b6fe5873SJaegeuk Kim } 424b6fe5873SJaegeuk Kim 42512f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4261515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 427e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 428e05df3b1SJaegeuk Kim { 4291515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 43012f9ef37SYunlei He struct nat_entry *new, *e; 4319be32d72SJaegeuk Kim 4320df035c7SJaegeuk Kim /* Let's mitigate lock contention of nat_tree_lock during checkpoint */ 433e4544b63STim Murray if (f2fs_rwsem_is_locked(&sbi->cp_global_sem)) 4340df035c7SJaegeuk Kim return; 4350df035c7SJaegeuk Kim 43632410577SChao Yu new = __alloc_nat_entry(sbi, nid, false); 43712f9ef37SYunlei He if (!new) 43812f9ef37SYunlei He return; 43912f9ef37SYunlei He 440e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 441e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 44212f9ef37SYunlei He if (!e) 44312f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 44412f9ef37SYunlei He else 4450c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4460c0b471eSEric Biggers nat_get_blkaddr(e) != 4470c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4481515aef0SChao Yu nat_get_version(e) != ne->version); 449e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 45012f9ef37SYunlei He if (e != new) 45112f9ef37SYunlei He __free_nat_entry(new); 452e05df3b1SJaegeuk Kim } 453e05df3b1SJaegeuk Kim 454e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 455479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 456e05df3b1SJaegeuk Kim { 457e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 458e05df3b1SJaegeuk Kim struct nat_entry *e; 45932410577SChao Yu struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true); 4609be32d72SJaegeuk Kim 461e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 462e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 463e05df3b1SJaegeuk Kim if (!e) { 46412f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4655c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 467e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 468e05df3b1SJaegeuk Kim /* 469e05df3b1SJaegeuk Kim * when nid is reallocated, 470e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 471e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 472e05df3b1SJaegeuk Kim */ 4735c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4749850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 475e05df3b1SJaegeuk Kim } 47612f9ef37SYunlei He /* let's free early to reduce memory consumption */ 47712f9ef37SYunlei He if (e != new) 47812f9ef37SYunlei He __free_nat_entry(new); 479e05df3b1SJaegeuk Kim 480e05df3b1SJaegeuk Kim /* sanity check */ 4819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4829850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 483e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4849850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 485e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 48693770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 487e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 488e05df3b1SJaegeuk Kim 489e1c42045Sarter97 /* increment version no as node is removed */ 490e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 491e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 4925f029c04SYi Zhuang 493e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 494e05df3b1SJaegeuk Kim } 495e05df3b1SJaegeuk Kim 496e05df3b1SJaegeuk Kim /* change address */ 497e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 49893770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 49988bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 500e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 501479f40c4SJaegeuk Kim 502479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 503d5b692b7SChao Yu if (ni->nid != ni->ino) 504479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 50588bd02c9SJaegeuk Kim if (e) { 50688bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 50788bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 50888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 50988bd02c9SJaegeuk Kim } 510e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 511e05df3b1SJaegeuk Kim } 512e05df3b1SJaegeuk Kim 5134d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 514e05df3b1SJaegeuk Kim { 515e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 5161b38dc8eSJaegeuk Kim int nr = nr_shrink; 517e05df3b1SJaegeuk Kim 518e4544b63STim Murray if (!f2fs_down_write_trylock(&nm_i->nat_tree_lock)) 519b873b798SJaegeuk Kim return 0; 520e05df3b1SJaegeuk Kim 52122969158SChao Yu spin_lock(&nm_i->nat_list_lock); 52222969158SChao Yu while (nr_shrink) { 523e05df3b1SJaegeuk Kim struct nat_entry *ne; 52422969158SChao Yu 52522969158SChao Yu if (list_empty(&nm_i->nat_entries)) 52622969158SChao Yu break; 52722969158SChao Yu 528e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 529e05df3b1SJaegeuk Kim struct nat_entry, list); 53022969158SChao Yu list_del(&ne->list); 53122969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53222969158SChao Yu 533e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 534e05df3b1SJaegeuk Kim nr_shrink--; 53522969158SChao Yu 53622969158SChao Yu spin_lock(&nm_i->nat_list_lock); 537e05df3b1SJaegeuk Kim } 53822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53922969158SChao Yu 540e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 5411b38dc8eSJaegeuk Kim return nr - nr_shrink; 542e05df3b1SJaegeuk Kim } 543e05df3b1SJaegeuk Kim 5447735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 545a9419b63SJaegeuk Kim struct node_info *ni, bool checkpoint_context) 546e05df3b1SJaegeuk Kim { 547e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 548e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 549b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 550e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 551e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 552e05df3b1SJaegeuk Kim struct page *page = NULL; 553e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 554e05df3b1SJaegeuk Kim struct nat_entry *e; 55566a82d1fSYunlei He pgoff_t index; 55693770ab7SChao Yu block_t blkaddr; 557e05df3b1SJaegeuk Kim int i; 558e05df3b1SJaegeuk Kim 559e05df3b1SJaegeuk Kim ni->nid = nid; 5602eeb0dceSJaegeuk Kim retry: 561e05df3b1SJaegeuk Kim /* Check nat cache */ 562e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 563e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 564e05df3b1SJaegeuk Kim if (e) { 565e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 566e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 567e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 568e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5697735730dSChao Yu return 0; 5701515aef0SChao Yu } 571e05df3b1SJaegeuk Kim 5722eeb0dceSJaegeuk Kim /* 5732eeb0dceSJaegeuk Kim * Check current segment summary by trying to grab journal_rwsem first. 5742eeb0dceSJaegeuk Kim * This sem is on the critical path on the checkpoint requiring the above 5752eeb0dceSJaegeuk Kim * nat_tree_lock. Therefore, we should retry, if we failed to grab here 5762eeb0dceSJaegeuk Kim * while not bothering checkpoint. 5772eeb0dceSJaegeuk Kim */ 578e4544b63STim Murray if (!f2fs_rwsem_is_locked(&sbi->cp_global_sem) || checkpoint_context) { 579b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 580e4544b63STim Murray } else if (f2fs_rwsem_is_contended(&nm_i->nat_tree_lock) || 581a9419b63SJaegeuk Kim !down_read_trylock(&curseg->journal_rwsem)) { 582e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5832eeb0dceSJaegeuk Kim goto retry; 5842eeb0dceSJaegeuk Kim } 5852eeb0dceSJaegeuk Kim 5864d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 587e05df3b1SJaegeuk Kim if (i >= 0) { 588dfc08a12SChao Yu ne = nat_in_journal(journal, i); 589e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 590e05df3b1SJaegeuk Kim } 591b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 59266a82d1fSYunlei He if (i >= 0) { 593e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 594e05df3b1SJaegeuk Kim goto cache; 59566a82d1fSYunlei He } 596e05df3b1SJaegeuk Kim 597e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 59866a82d1fSYunlei He index = current_nat_addr(sbi, nid); 599e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 60066a82d1fSYunlei He 6014d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 6027735730dSChao Yu if (IS_ERR(page)) 6037735730dSChao Yu return PTR_ERR(page); 6047735730dSChao Yu 605e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 606e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 607e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 608e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 609e05df3b1SJaegeuk Kim cache: 61093770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 61193770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 61293770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 61393770ab7SChao Yu return -EFAULT; 61493770ab7SChao Yu 615e05df3b1SJaegeuk Kim /* cache nat entry */ 6161515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 6177735730dSChao Yu return 0; 618e05df3b1SJaegeuk Kim } 619e05df3b1SJaegeuk Kim 62079344efbSJaegeuk Kim /* 62179344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 62279344efbSJaegeuk Kim */ 6234d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 62479344efbSJaegeuk Kim { 62579344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 62679344efbSJaegeuk Kim struct blk_plug plug; 62779344efbSJaegeuk Kim int i, end; 62879344efbSJaegeuk Kim nid_t nid; 62979344efbSJaegeuk Kim 63079344efbSJaegeuk Kim blk_start_plug(&plug); 63179344efbSJaegeuk Kim 63279344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 63379344efbSJaegeuk Kim end = start + n; 63479344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 63579344efbSJaegeuk Kim for (i = start; i < end; i++) { 63679344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6374d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 63879344efbSJaegeuk Kim } 63979344efbSJaegeuk Kim 64079344efbSJaegeuk Kim blk_finish_plug(&plug); 64179344efbSJaegeuk Kim } 64279344efbSJaegeuk Kim 6434d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6443cf45747SChao Yu { 6453cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 646d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 647d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 648d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6493cf45747SChao Yu int cur_level = dn->cur_level; 6503cf45747SChao Yu int max_level = dn->max_level; 6513cf45747SChao Yu pgoff_t base = 0; 6523cf45747SChao Yu 6533cf45747SChao Yu if (!dn->max_level) 6543cf45747SChao Yu return pgofs + 1; 6553cf45747SChao Yu 6563cf45747SChao Yu while (max_level-- > cur_level) 6573cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6583cf45747SChao Yu 6593cf45747SChao Yu switch (dn->max_level) { 6603cf45747SChao Yu case 3: 6613cf45747SChao Yu base += 2 * indirect_blks; 662df561f66SGustavo A. R. Silva fallthrough; 6633cf45747SChao Yu case 2: 6643cf45747SChao Yu base += 2 * direct_blks; 665df561f66SGustavo A. R. Silva fallthrough; 6663cf45747SChao Yu case 1: 6673cf45747SChao Yu base += direct_index; 6683cf45747SChao Yu break; 6693cf45747SChao Yu default: 6703cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6713cf45747SChao Yu } 6723cf45747SChao Yu 6733cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6743cf45747SChao Yu } 6753cf45747SChao Yu 6760a8165d7SJaegeuk Kim /* 677e05df3b1SJaegeuk Kim * The maximum depth is four. 678e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 679e05df3b1SJaegeuk Kim */ 68081ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 681de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 682e05df3b1SJaegeuk Kim { 68381ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 684d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 685e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 686d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 687e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 688e05df3b1SJaegeuk Kim int n = 0; 689e05df3b1SJaegeuk Kim int level = 0; 690e05df3b1SJaegeuk Kim 691e05df3b1SJaegeuk Kim noffset[0] = 0; 692e05df3b1SJaegeuk Kim 693e05df3b1SJaegeuk Kim if (block < direct_index) { 69425c0a6e5SNamjae Jeon offset[n] = block; 695e05df3b1SJaegeuk Kim goto got; 696e05df3b1SJaegeuk Kim } 697e05df3b1SJaegeuk Kim block -= direct_index; 698e05df3b1SJaegeuk Kim if (block < direct_blks) { 699e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 700e05df3b1SJaegeuk Kim noffset[n] = 1; 70125c0a6e5SNamjae Jeon offset[n] = block; 702e05df3b1SJaegeuk Kim level = 1; 703e05df3b1SJaegeuk Kim goto got; 704e05df3b1SJaegeuk Kim } 705e05df3b1SJaegeuk Kim block -= direct_blks; 706e05df3b1SJaegeuk Kim if (block < direct_blks) { 707e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 708e05df3b1SJaegeuk Kim noffset[n] = 2; 70925c0a6e5SNamjae Jeon offset[n] = block; 710e05df3b1SJaegeuk Kim level = 1; 711e05df3b1SJaegeuk Kim goto got; 712e05df3b1SJaegeuk Kim } 713e05df3b1SJaegeuk Kim block -= direct_blks; 714e05df3b1SJaegeuk Kim if (block < indirect_blks) { 715e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 716e05df3b1SJaegeuk Kim noffset[n] = 3; 717e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 718e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 71925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 720e05df3b1SJaegeuk Kim level = 2; 721e05df3b1SJaegeuk Kim goto got; 722e05df3b1SJaegeuk Kim } 723e05df3b1SJaegeuk Kim block -= indirect_blks; 724e05df3b1SJaegeuk Kim if (block < indirect_blks) { 725e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 726e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 727e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 728e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 72925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 730e05df3b1SJaegeuk Kim level = 2; 731e05df3b1SJaegeuk Kim goto got; 732e05df3b1SJaegeuk Kim } 733e05df3b1SJaegeuk Kim block -= indirect_blks; 734e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 735e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 736e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 737e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 738e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 739e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 740e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 741e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 742e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 743e05df3b1SJaegeuk Kim offset[n - 1]; 74425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 745e05df3b1SJaegeuk Kim level = 3; 746e05df3b1SJaegeuk Kim goto got; 747e05df3b1SJaegeuk Kim } else { 748adb6dc19SJaegeuk Kim return -E2BIG; 749e05df3b1SJaegeuk Kim } 750e05df3b1SJaegeuk Kim got: 751e05df3b1SJaegeuk Kim return level; 752e05df3b1SJaegeuk Kim } 753e05df3b1SJaegeuk Kim 754e05df3b1SJaegeuk Kim /* 755e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7564f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7577a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 758e05df3b1SJaegeuk Kim */ 7594d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 760e05df3b1SJaegeuk Kim { 7614081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 762e05df3b1SJaegeuk Kim struct page *npage[4]; 763f1a3b98eSJaegeuk Kim struct page *parent = NULL; 764e05df3b1SJaegeuk Kim int offset[4]; 765e05df3b1SJaegeuk Kim unsigned int noffset[4]; 766e05df3b1SJaegeuk Kim nid_t nids[4]; 7673cf45747SChao Yu int level, i = 0; 768e05df3b1SJaegeuk Kim int err = 0; 769e05df3b1SJaegeuk Kim 77081ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 771adb6dc19SJaegeuk Kim if (level < 0) 772adb6dc19SJaegeuk Kim return level; 773e05df3b1SJaegeuk Kim 774e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7751646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7761646cfacSJaegeuk Kim 7771646cfacSJaegeuk Kim if (!npage[0]) { 7784d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 779e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 780e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7811646cfacSJaegeuk Kim } 782f1a3b98eSJaegeuk Kim 783f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 784f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 78576629165SJaegeuk Kim err = -ENOENT; 786f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 787f1a3b98eSJaegeuk Kim goto release_out; 788f1a3b98eSJaegeuk Kim } 789f1a3b98eSJaegeuk Kim 790e05df3b1SJaegeuk Kim parent = npage[0]; 79152c2db3fSChangman Lee if (level != 0) 792e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 793e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 794e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 795e05df3b1SJaegeuk Kim 796e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 797e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 798e05df3b1SJaegeuk Kim bool done = false; 799e05df3b1SJaegeuk Kim 800266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 801e05df3b1SJaegeuk Kim /* alloc new node */ 8024d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 803e05df3b1SJaegeuk Kim err = -ENOSPC; 804e05df3b1SJaegeuk Kim goto release_pages; 805e05df3b1SJaegeuk Kim } 806e05df3b1SJaegeuk Kim 807e05df3b1SJaegeuk Kim dn->nid = nids[i]; 8084d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 809e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 8104d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 811e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 812e05df3b1SJaegeuk Kim goto release_pages; 813e05df3b1SJaegeuk Kim } 814e05df3b1SJaegeuk Kim 815e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 8164d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 817e05df3b1SJaegeuk Kim done = true; 818266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 8194d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 820e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 821e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 822e05df3b1SJaegeuk Kim goto release_pages; 823e05df3b1SJaegeuk Kim } 824e05df3b1SJaegeuk Kim done = true; 825e05df3b1SJaegeuk Kim } 826e05df3b1SJaegeuk Kim if (i == 1) { 827e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 828e05df3b1SJaegeuk Kim unlock_page(parent); 829e05df3b1SJaegeuk Kim } else { 830e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 831e05df3b1SJaegeuk Kim } 832e05df3b1SJaegeuk Kim 833e05df3b1SJaegeuk Kim if (!done) { 8344d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 835e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 836e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 837e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 838e05df3b1SJaegeuk Kim goto release_out; 839e05df3b1SJaegeuk Kim } 840e05df3b1SJaegeuk Kim } 841e05df3b1SJaegeuk Kim if (i < level) { 842e05df3b1SJaegeuk Kim parent = npage[i]; 843e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 844e05df3b1SJaegeuk Kim } 845e05df3b1SJaegeuk Kim } 846e05df3b1SJaegeuk Kim dn->nid = nids[level]; 847e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 848e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 849a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 85094afd6d6SChao Yu 85194afd6d6SChao Yu if (is_inode_flag_set(dn->inode, FI_COMPRESSED_FILE) && 85294afd6d6SChao Yu f2fs_sb_has_readonly(sbi)) { 85394afd6d6SChao Yu unsigned int c_len = f2fs_cluster_blocks_are_contiguous(dn); 85494afd6d6SChao Yu block_t blkaddr; 85594afd6d6SChao Yu 85694afd6d6SChao Yu if (!c_len) 85794afd6d6SChao Yu goto out; 85894afd6d6SChao Yu 85994afd6d6SChao Yu blkaddr = f2fs_data_blkaddr(dn); 86094afd6d6SChao Yu if (blkaddr == COMPRESS_ADDR) 86194afd6d6SChao Yu blkaddr = data_blkaddr(dn->inode, dn->node_page, 86294afd6d6SChao Yu dn->ofs_in_node + 1); 86394afd6d6SChao Yu 864*e7547dacSJaegeuk Kim f2fs_update_read_extent_tree_range_compressed(dn->inode, 86594afd6d6SChao Yu index, blkaddr, 86694afd6d6SChao Yu F2FS_I(dn->inode)->i_cluster_size, 86794afd6d6SChao Yu c_len); 86894afd6d6SChao Yu } 86994afd6d6SChao Yu out: 870e05df3b1SJaegeuk Kim return 0; 871e05df3b1SJaegeuk Kim 872e05df3b1SJaegeuk Kim release_pages: 873e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 874e05df3b1SJaegeuk Kim if (i > 1) 875e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 876e05df3b1SJaegeuk Kim release_out: 877e05df3b1SJaegeuk Kim dn->inode_page = NULL; 878e05df3b1SJaegeuk Kim dn->node_page = NULL; 8793cf45747SChao Yu if (err == -ENOENT) { 8803cf45747SChao Yu dn->cur_level = i; 8813cf45747SChao Yu dn->max_level = level; 8820a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8833cf45747SChao Yu } 884e05df3b1SJaegeuk Kim return err; 885e05df3b1SJaegeuk Kim } 886e05df3b1SJaegeuk Kim 8877735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 888e05df3b1SJaegeuk Kim { 8894081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 890e05df3b1SJaegeuk Kim struct node_info ni; 8917735730dSChao Yu int err; 8920ea295ddSPan Bian pgoff_t index; 893e05df3b1SJaegeuk Kim 894a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &ni, false); 8957735730dSChao Yu if (err) 8967735730dSChao Yu return err; 897e05df3b1SJaegeuk Kim 898e05df3b1SJaegeuk Kim /* Deallocate node address */ 8994d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 900000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 901479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 902e05df3b1SJaegeuk Kim 903e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 9044d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 905e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 9060f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 907e05df3b1SJaegeuk Kim } 908000519f2SChao Yu 909e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 910caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 911e05df3b1SJaegeuk Kim 9120ea295ddSPan Bian index = dn->node_page->index; 913e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 914bf39c00aSJaegeuk Kim 915bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 9160ea295ddSPan Bian index, index); 917bf39c00aSJaegeuk Kim 918e05df3b1SJaegeuk Kim dn->node_page = NULL; 91951dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 9207735730dSChao Yu 9217735730dSChao Yu return 0; 922e05df3b1SJaegeuk Kim } 923e05df3b1SJaegeuk Kim 924e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 925e05df3b1SJaegeuk Kim { 926e05df3b1SJaegeuk Kim struct page *page; 9277735730dSChao Yu int err; 928e05df3b1SJaegeuk Kim 929e05df3b1SJaegeuk Kim if (dn->nid == 0) 930e05df3b1SJaegeuk Kim return 1; 931e05df3b1SJaegeuk Kim 932e05df3b1SJaegeuk Kim /* get direct node */ 9334d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 93445586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 935e05df3b1SJaegeuk Kim return 1; 936e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 937e05df3b1SJaegeuk Kim return PTR_ERR(page); 938e05df3b1SJaegeuk Kim 939e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 940e05df3b1SJaegeuk Kim dn->node_page = page; 941e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 9424d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 9437735730dSChao Yu err = truncate_node(dn); 9447735730dSChao Yu if (err) 9457735730dSChao Yu return err; 9467735730dSChao Yu 947e05df3b1SJaegeuk Kim return 1; 948e05df3b1SJaegeuk Kim } 949e05df3b1SJaegeuk Kim 950e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 951e05df3b1SJaegeuk Kim int ofs, int depth) 952e05df3b1SJaegeuk Kim { 953e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 954e05df3b1SJaegeuk Kim struct page *page; 955e05df3b1SJaegeuk Kim struct f2fs_node *rn; 956e05df3b1SJaegeuk Kim nid_t child_nid; 957e05df3b1SJaegeuk Kim unsigned int child_nofs; 958e05df3b1SJaegeuk Kim int freed = 0; 959e05df3b1SJaegeuk Kim int i, ret; 960e05df3b1SJaegeuk Kim 961e05df3b1SJaegeuk Kim if (dn->nid == 0) 962e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 963e05df3b1SJaegeuk Kim 96451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 96551dd6249SNamjae Jeon 9664d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 96751dd6249SNamjae Jeon if (IS_ERR(page)) { 96851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 969e05df3b1SJaegeuk Kim return PTR_ERR(page); 97051dd6249SNamjae Jeon } 971e05df3b1SJaegeuk Kim 9724d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 97379344efbSJaegeuk Kim 97445590710SGu Zheng rn = F2FS_NODE(page); 975e05df3b1SJaegeuk Kim if (depth < 3) { 976e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 977e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 978e05df3b1SJaegeuk Kim if (child_nid == 0) 979e05df3b1SJaegeuk Kim continue; 980e05df3b1SJaegeuk Kim rdn.nid = child_nid; 981e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 982e05df3b1SJaegeuk Kim if (ret < 0) 983e05df3b1SJaegeuk Kim goto out_err; 98412719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 98593bae099SJaegeuk Kim dn->node_changed = true; 986e05df3b1SJaegeuk Kim } 987e05df3b1SJaegeuk Kim } else { 988e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 989e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 990e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 991e05df3b1SJaegeuk Kim if (child_nid == 0) { 992e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 993e05df3b1SJaegeuk Kim continue; 994e05df3b1SJaegeuk Kim } 995e05df3b1SJaegeuk Kim rdn.nid = child_nid; 996e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 997e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 99812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 99993bae099SJaegeuk Kim dn->node_changed = true; 1000e05df3b1SJaegeuk Kim child_nofs += ret; 1001e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 1002e05df3b1SJaegeuk Kim goto out_err; 1003e05df3b1SJaegeuk Kim } 1004e05df3b1SJaegeuk Kim } 1005e05df3b1SJaegeuk Kim freed = child_nofs; 1006e05df3b1SJaegeuk Kim } 1007e05df3b1SJaegeuk Kim 1008e05df3b1SJaegeuk Kim if (!ofs) { 1009e05df3b1SJaegeuk Kim /* remove current indirect node */ 1010e05df3b1SJaegeuk Kim dn->node_page = page; 10117735730dSChao Yu ret = truncate_node(dn); 10127735730dSChao Yu if (ret) 10137735730dSChao Yu goto out_err; 1014e05df3b1SJaegeuk Kim freed++; 1015e05df3b1SJaegeuk Kim } else { 1016e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1017e05df3b1SJaegeuk Kim } 101851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 1019e05df3b1SJaegeuk Kim return freed; 1020e05df3b1SJaegeuk Kim 1021e05df3b1SJaegeuk Kim out_err: 1022e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 102351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 1024e05df3b1SJaegeuk Kim return ret; 1025e05df3b1SJaegeuk Kim } 1026e05df3b1SJaegeuk Kim 1027e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 1028e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 1029e05df3b1SJaegeuk Kim { 1030e05df3b1SJaegeuk Kim struct page *pages[2]; 1031e05df3b1SJaegeuk Kim nid_t nid[3]; 1032e05df3b1SJaegeuk Kim nid_t child_nid; 1033e05df3b1SJaegeuk Kim int err = 0; 1034e05df3b1SJaegeuk Kim int i; 1035e05df3b1SJaegeuk Kim int idx = depth - 2; 1036e05df3b1SJaegeuk Kim 1037e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1038e05df3b1SJaegeuk Kim if (!nid[0]) 1039e05df3b1SJaegeuk Kim return 0; 1040e05df3b1SJaegeuk Kim 1041e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1042a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1043e1c42045Sarter97 /* reference count'll be increased */ 10444d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1045e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1046e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1047a225dca3Sshifei10.ge idx = i - 1; 1048e05df3b1SJaegeuk Kim goto fail; 1049e05df3b1SJaegeuk Kim } 1050e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1051e05df3b1SJaegeuk Kim } 1052e05df3b1SJaegeuk Kim 10534d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 105479344efbSJaegeuk Kim 1055e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1056a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1057e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1058e05df3b1SJaegeuk Kim if (!child_nid) 1059e05df3b1SJaegeuk Kim continue; 1060e05df3b1SJaegeuk Kim dn->nid = child_nid; 1061e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1062e05df3b1SJaegeuk Kim if (err < 0) 1063e05df3b1SJaegeuk Kim goto fail; 106412719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 106593bae099SJaegeuk Kim dn->node_changed = true; 1066e05df3b1SJaegeuk Kim } 1067e05df3b1SJaegeuk Kim 1068a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1069e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1070e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10717735730dSChao Yu err = truncate_node(dn); 10727735730dSChao Yu if (err) 10737735730dSChao Yu goto fail; 1074e05df3b1SJaegeuk Kim } else { 1075e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1076e05df3b1SJaegeuk Kim } 1077e05df3b1SJaegeuk Kim offset[idx]++; 1078a225dca3Sshifei10.ge offset[idx + 1] = 0; 1079a225dca3Sshifei10.ge idx--; 1080e05df3b1SJaegeuk Kim fail: 1081a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1082e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 108351dd6249SNamjae Jeon 108451dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 108551dd6249SNamjae Jeon 1086e05df3b1SJaegeuk Kim return err; 1087e05df3b1SJaegeuk Kim } 1088e05df3b1SJaegeuk Kim 10890a8165d7SJaegeuk Kim /* 1090e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1091e05df3b1SJaegeuk Kim */ 10924d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1093e05df3b1SJaegeuk Kim { 10944081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1095e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1096e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10977dd690c8SJaegeuk Kim unsigned int nofs = 0; 109858bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1099e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1100e05df3b1SJaegeuk Kim struct page *page; 1101e05df3b1SJaegeuk Kim 110251dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 110351dd6249SNamjae Jeon 110481ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 11059039d835SYubo Feng if (level < 0) { 11069039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1107adb6dc19SJaegeuk Kim return level; 11089039d835SYubo Feng } 1109ff373558SJaegeuk Kim 11104d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 111151dd6249SNamjae Jeon if (IS_ERR(page)) { 111251dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1113e05df3b1SJaegeuk Kim return PTR_ERR(page); 111451dd6249SNamjae Jeon } 1115e05df3b1SJaegeuk Kim 1116e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1117e05df3b1SJaegeuk Kim unlock_page(page); 1118e05df3b1SJaegeuk Kim 111958bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1120e05df3b1SJaegeuk Kim switch (level) { 1121e05df3b1SJaegeuk Kim case 0: 1122e05df3b1SJaegeuk Kim case 1: 1123e05df3b1SJaegeuk Kim nofs = noffset[1]; 1124e05df3b1SJaegeuk Kim break; 1125e05df3b1SJaegeuk Kim case 2: 1126e05df3b1SJaegeuk Kim nofs = noffset[1]; 1127e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1128e05df3b1SJaegeuk Kim goto skip_partial; 112958bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1130e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1131e05df3b1SJaegeuk Kim goto fail; 1132e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1133e05df3b1SJaegeuk Kim break; 1134e05df3b1SJaegeuk Kim case 3: 1135e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1136e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1137e05df3b1SJaegeuk Kim goto skip_partial; 113858bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1139e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1140e05df3b1SJaegeuk Kim goto fail; 1141e05df3b1SJaegeuk Kim break; 1142e05df3b1SJaegeuk Kim default: 1143e05df3b1SJaegeuk Kim BUG(); 1144e05df3b1SJaegeuk Kim } 1145e05df3b1SJaegeuk Kim 1146e05df3b1SJaegeuk Kim skip_partial: 1147e05df3b1SJaegeuk Kim while (cont) { 114858bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1149e05df3b1SJaegeuk Kim switch (offset[0]) { 1150e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1151e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1152e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1153e05df3b1SJaegeuk Kim break; 1154e05df3b1SJaegeuk Kim 1155e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1156e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1157e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1158e05df3b1SJaegeuk Kim break; 1159e05df3b1SJaegeuk Kim 1160e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1161e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1162e05df3b1SJaegeuk Kim cont = 0; 1163e05df3b1SJaegeuk Kim break; 1164e05df3b1SJaegeuk Kim 1165e05df3b1SJaegeuk Kim default: 1166e05df3b1SJaegeuk Kim BUG(); 1167e05df3b1SJaegeuk Kim } 1168e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1169e05df3b1SJaegeuk Kim goto fail; 1170e05df3b1SJaegeuk Kim if (offset[1] == 0 && 117158bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1172e05df3b1SJaegeuk Kim lock_page(page); 1173ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1174bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 117558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1176e05df3b1SJaegeuk Kim set_page_dirty(page); 1177e05df3b1SJaegeuk Kim unlock_page(page); 1178e05df3b1SJaegeuk Kim } 1179e05df3b1SJaegeuk Kim offset[1] = 0; 1180e05df3b1SJaegeuk Kim offset[0]++; 1181e05df3b1SJaegeuk Kim nofs += err; 1182e05df3b1SJaegeuk Kim } 1183e05df3b1SJaegeuk Kim fail: 1184e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 118551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1186e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1187e05df3b1SJaegeuk Kim } 1188e05df3b1SJaegeuk Kim 11899c77f754SJaegeuk Kim /* caller must lock inode page */ 11904d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11914f16fb0fSJaegeuk Kim { 11924081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11934f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11944f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11954f16fb0fSJaegeuk Kim struct page *npage; 11967735730dSChao Yu int err; 11974f16fb0fSJaegeuk Kim 11984f16fb0fSJaegeuk Kim if (!nid) 11994f16fb0fSJaegeuk Kim return 0; 12004f16fb0fSJaegeuk Kim 12014d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 12024f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 12034f16fb0fSJaegeuk Kim return PTR_ERR(npage); 12044f16fb0fSJaegeuk Kim 12057735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 12067735730dSChao Yu err = truncate_node(&dn); 12077735730dSChao Yu if (err) { 12087735730dSChao Yu f2fs_put_page(npage, 1); 12097735730dSChao Yu return err; 12107735730dSChao Yu } 12117735730dSChao Yu 1212205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 121365985d93SJaegeuk Kim 12144f16fb0fSJaegeuk Kim return 0; 12154f16fb0fSJaegeuk Kim } 12164f16fb0fSJaegeuk Kim 121739936837SJaegeuk Kim /* 12184f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 12194f4124d0SChao Yu * f2fs_unlock_op(). 122039936837SJaegeuk Kim */ 12214d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1222e05df3b1SJaegeuk Kim { 1223e05df3b1SJaegeuk Kim struct dnode_of_data dn; 122413ec7297SChao Yu int err; 1225e05df3b1SJaegeuk Kim 1226c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 12274d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 122813ec7297SChao Yu if (err) 122913ec7297SChao Yu return err; 1230e05df3b1SJaegeuk Kim 12314d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 123213ec7297SChao Yu if (err) { 1233c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 123413ec7297SChao Yu return err; 1235e05df3b1SJaegeuk Kim } 1236c2e69583SJaegeuk Kim 1237c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1238c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1239c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12404d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1241c2e69583SJaegeuk Kim 1242e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12438d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12448d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12458d714f8aSJaegeuk Kim return -EIO; 12468d714f8aSJaegeuk Kim } 12478b6810f8SChao Yu 12488b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1249097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1250097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1251dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12528b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12538b6810f8SChao Yu } 1254c2e69583SJaegeuk Kim 1255c2e69583SJaegeuk Kim /* will put inode & node pages */ 12567735730dSChao Yu err = truncate_node(&dn); 12577735730dSChao Yu if (err) { 12587735730dSChao Yu f2fs_put_dnode(&dn); 12597735730dSChao Yu return err; 12607735730dSChao Yu } 126113ec7297SChao Yu return 0; 1262e05df3b1SJaegeuk Kim } 1263e05df3b1SJaegeuk Kim 12644d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1265e05df3b1SJaegeuk Kim { 1266e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1267e05df3b1SJaegeuk Kim 1268e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1269e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 127044a83ff6SJaegeuk Kim 127144a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12724d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1273e05df3b1SJaegeuk Kim } 1274e05df3b1SJaegeuk Kim 12754d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1276e05df3b1SJaegeuk Kim { 12774081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 127825cc5d3bSJaegeuk Kim struct node_info new_ni; 1279e05df3b1SJaegeuk Kim struct page *page; 1280e05df3b1SJaegeuk Kim int err; 1281e05df3b1SJaegeuk Kim 128291942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1283e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1284e05df3b1SJaegeuk Kim 1285300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1286e05df3b1SJaegeuk Kim if (!page) 1287e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1288e05df3b1SJaegeuk Kim 12890abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12909c02740cSJaegeuk Kim goto fail; 12910abd675eSChao Yu 129225cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 1293a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false); 12947735730dSChao Yu if (err) { 12957735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12967735730dSChao Yu goto fail; 12977735730dSChao Yu } 1298141170b7SChao Yu if (unlikely(new_ni.blk_addr != NULL_ADDR)) { 1299141170b7SChao Yu err = -EFSCORRUPTED; 1300141170b7SChao Yu set_sbi_flag(sbi, SBI_NEED_FSCK); 130195fa90c9SChao Yu f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); 1302141170b7SChao Yu goto fail; 1303141170b7SChao Yu } 130425cc5d3bSJaegeuk Kim #endif 130525cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1306e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 130725cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 130825cc5d3bSJaegeuk Kim new_ni.flag = 0; 130925cc5d3bSJaegeuk Kim new_ni.version = 0; 1310479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 13119c02740cSJaegeuk Kim 1312bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 13139c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1314c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1315237c0790SJaegeuk Kim if (!PageUptodate(page)) 13169c02740cSJaegeuk Kim SetPageUptodate(page); 131712719ae1SJaegeuk Kim if (set_page_dirty(page)) 131812719ae1SJaegeuk Kim dn->node_changed = true; 1319e05df3b1SJaegeuk Kim 13204bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1321205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1322479bd73aSJaegeuk Kim 1323e05df3b1SJaegeuk Kim if (ofs == 0) 1324e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1325e05df3b1SJaegeuk Kim return page; 1326e05df3b1SJaegeuk Kim 1327e05df3b1SJaegeuk Kim fail: 132871e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1329e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1330e05df3b1SJaegeuk Kim return ERR_PTR(err); 1331e05df3b1SJaegeuk Kim } 1332e05df3b1SJaegeuk Kim 133356ae674cSJaegeuk Kim /* 133456ae674cSJaegeuk Kim * Caller should do after getting the following values. 133556ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 133686531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 133756ae674cSJaegeuk Kim */ 13387649c873SBart Van Assche static int read_node_page(struct page *page, blk_opf_t op_flags) 1339e05df3b1SJaegeuk Kim { 13404081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1341e05df3b1SJaegeuk Kim struct node_info ni; 1342cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 134305ca3632SJaegeuk Kim .sbi = sbi, 1344cf04e8ebSJaegeuk Kim .type = NODE, 134504d328deSMike Christie .op = REQ_OP_READ, 134604d328deSMike Christie .op_flags = op_flags, 134705ca3632SJaegeuk Kim .page = page, 13484375a336SJaegeuk Kim .encrypted_page = NULL, 1349cf04e8ebSJaegeuk Kim }; 13507735730dSChao Yu int err; 1351e05df3b1SJaegeuk Kim 135254c55c4eSWeichao Guo if (PageUptodate(page)) { 1353b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1354b42b179bSChao Yu ClearPageUptodate(page); 135510f966bbSChao Yu return -EFSBADCRC; 1356b42b179bSChao Yu } 13573bdad3c7SJaegeuk Kim return LOCKED_PAGE; 135854c55c4eSWeichao Guo } 13593bdad3c7SJaegeuk Kim 1360a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, page->index, &ni, false); 13617735730dSChao Yu if (err) 13627735730dSChao Yu return err; 1363e05df3b1SJaegeuk Kim 1364b7ec2061SJaegeuk Kim /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */ 1365e6ecb142SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR)) { 13662bca1e23SJaegeuk Kim ClearPageUptodate(page); 1367e05df3b1SJaegeuk Kim return -ENOENT; 1368393ff91fSJaegeuk Kim } 1369393ff91fSJaegeuk Kim 13707a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13718b83ac81SChao Yu 13728b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13738b83ac81SChao Yu 13748b83ac81SChao Yu if (!err) 137534a23525SChao Yu f2fs_update_iostat(sbi, NULL, FS_NODE_READ_IO, F2FS_BLKSIZE); 13768b83ac81SChao Yu 13778b83ac81SChao Yu return err; 1378e05df3b1SJaegeuk Kim } 1379e05df3b1SJaegeuk Kim 13800a8165d7SJaegeuk Kim /* 1381e05df3b1SJaegeuk Kim * Readahead a node page 1382e05df3b1SJaegeuk Kim */ 13834d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1384e05df3b1SJaegeuk Kim { 1385e05df3b1SJaegeuk Kim struct page *apage; 138656ae674cSJaegeuk Kim int err; 1387e05df3b1SJaegeuk Kim 1388e8458725SChao Yu if (!nid) 1389e8458725SChao Yu return; 13904d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1391a4f843bdSJaegeuk Kim return; 1392e8458725SChao Yu 13935ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1394999270deSFan Li if (apage) 1395393ff91fSJaegeuk Kim return; 1396e05df3b1SJaegeuk Kim 1397300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1398e05df3b1SJaegeuk Kim if (!apage) 1399e05df3b1SJaegeuk Kim return; 1400e05df3b1SJaegeuk Kim 140170246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 140286531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1403e05df3b1SJaegeuk Kim } 1404e05df3b1SJaegeuk Kim 140517a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 14060e022ea8SChao Yu struct page *parent, int start) 1407e05df3b1SJaegeuk Kim { 140856ae674cSJaegeuk Kim struct page *page; 140956ae674cSJaegeuk Kim int err; 14104aa69d56SJaegeuk Kim 14114aa69d56SJaegeuk Kim if (!nid) 14124aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 14134d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1414a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1415afcb7ca0SJaegeuk Kim repeat: 1416300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1417e05df3b1SJaegeuk Kim if (!page) 1418e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1419e05df3b1SJaegeuk Kim 142070fd7614SChristoph Hellwig err = read_node_page(page, 0); 142186531d6bSJaegeuk Kim if (err < 0) { 1422a7b8618aSJaegeuk Kim goto out_put_err; 1423e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 14241f258ec1SChao Yu err = 0; 1425e1c51b9fSChao Yu goto page_hit; 142686531d6bSJaegeuk Kim } 1427aaf96075SJaegeuk Kim 14280e022ea8SChao Yu if (parent) 14294d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 14300e022ea8SChao Yu 1431e1c51b9fSChao Yu lock_page(page); 1432e1c51b9fSChao Yu 14334ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1434afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1435afcb7ca0SJaegeuk Kim goto repeat; 1436afcb7ca0SJaegeuk Kim } 14371563ac75SChao Yu 14381f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14391f258ec1SChao Yu err = -EIO; 14401563ac75SChao Yu goto out_err; 14411f258ec1SChao Yu } 1442704956ecSChao Yu 1443704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 144410f966bbSChao Yu err = -EFSBADCRC; 1445704956ecSChao Yu goto out_err; 1446704956ecSChao Yu } 1447e1c51b9fSChao Yu page_hit: 1448a7b8618aSJaegeuk Kim if (likely(nid == nid_of_node(page))) 1449a7b8618aSJaegeuk Kim return page; 1450a7b8618aSJaegeuk Kim 1451dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14521f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14531f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14541f258ec1SChao Yu next_blkaddr_of_node(page)); 14556663b138SWeichao Guo set_sbi_flag(sbi, SBI_NEED_FSCK); 14561f258ec1SChao Yu err = -EINVAL; 14570c9df7fbSYunlong Song out_err: 1458ee605234SJaegeuk Kim ClearPageUptodate(page); 1459a7b8618aSJaegeuk Kim out_put_err: 146082c7863eSJaegeuk Kim /* ENOENT comes from read_node_page which is not an error. */ 146182c7863eSJaegeuk Kim if (err != -ENOENT) 1462a7b8618aSJaegeuk Kim f2fs_handle_page_eio(sbi, page->index, NODE); 14630c9df7fbSYunlong Song f2fs_put_page(page, 1); 14641f258ec1SChao Yu return ERR_PTR(err); 14650c9df7fbSYunlong Song } 1466e05df3b1SJaegeuk Kim 14674d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14680e022ea8SChao Yu { 14690e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14700e022ea8SChao Yu } 14710e022ea8SChao Yu 14724d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1473e05df3b1SJaegeuk Kim { 14744081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14750e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1476e05df3b1SJaegeuk Kim 14770e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1478e05df3b1SJaegeuk Kim } 1479e05df3b1SJaegeuk Kim 14802049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14812049d4fcSJaegeuk Kim { 14822049d4fcSJaegeuk Kim struct inode *inode; 14832049d4fcSJaegeuk Kim struct page *page; 14840f3311a8SChao Yu int ret; 14852049d4fcSJaegeuk Kim 14862049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14872049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14882049d4fcSJaegeuk Kim if (!inode) 14892049d4fcSJaegeuk Kim return; 14902049d4fcSJaegeuk Kim 149101eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 149201eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14932049d4fcSJaegeuk Kim if (!page) 14942049d4fcSJaegeuk Kim goto iput_out; 14952049d4fcSJaegeuk Kim 14962049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14972049d4fcSJaegeuk Kim goto page_out; 14982049d4fcSJaegeuk Kim 14992049d4fcSJaegeuk Kim if (!PageDirty(page)) 15002049d4fcSJaegeuk Kim goto page_out; 15012049d4fcSJaegeuk Kim 15022049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 15032049d4fcSJaegeuk Kim goto page_out; 15042049d4fcSJaegeuk Kim 15050f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 15062049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 15074d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 15080f3311a8SChao Yu if (ret) 15092049d4fcSJaegeuk Kim set_page_dirty(page); 15102049d4fcSJaegeuk Kim page_out: 15114a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 15122049d4fcSJaegeuk Kim iput_out: 15132049d4fcSJaegeuk Kim iput(inode); 15142049d4fcSJaegeuk Kim } 15152049d4fcSJaegeuk Kim 1516608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1517e05df3b1SJaegeuk Kim { 1518028a63a6SJan Kara pgoff_t index; 1519e05df3b1SJaegeuk Kim struct pagevec pvec; 1520608514deSJaegeuk Kim struct page *last_page = NULL; 1521028a63a6SJan Kara int nr_pages; 152252681375SJaegeuk Kim 152386679820SMel Gorman pagevec_init(&pvec); 152452681375SJaegeuk Kim index = 0; 152552681375SJaegeuk Kim 1526028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 152767fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1528028a63a6SJan Kara int i; 152952681375SJaegeuk Kim 153052681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 153152681375SJaegeuk Kim struct page *page = pvec.pages[i]; 153252681375SJaegeuk Kim 153352681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1534608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 153552681375SJaegeuk Kim pagevec_release(&pvec); 1536608514deSJaegeuk Kim return ERR_PTR(-EIO); 153752681375SJaegeuk Kim } 153852681375SJaegeuk Kim 153952681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 154052681375SJaegeuk Kim continue; 154152681375SJaegeuk Kim if (ino_of_node(page) != ino) 154252681375SJaegeuk Kim continue; 154352681375SJaegeuk Kim 154452681375SJaegeuk Kim lock_page(page); 154552681375SJaegeuk Kim 154652681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 154752681375SJaegeuk Kim continue_unlock: 154852681375SJaegeuk Kim unlock_page(page); 154952681375SJaegeuk Kim continue; 155052681375SJaegeuk Kim } 155152681375SJaegeuk Kim if (ino_of_node(page) != ino) 155252681375SJaegeuk Kim goto continue_unlock; 155352681375SJaegeuk Kim 155452681375SJaegeuk Kim if (!PageDirty(page)) { 155552681375SJaegeuk Kim /* someone wrote it for us */ 155652681375SJaegeuk Kim goto continue_unlock; 155752681375SJaegeuk Kim } 155852681375SJaegeuk Kim 1559608514deSJaegeuk Kim if (last_page) 1560608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1561608514deSJaegeuk Kim 1562608514deSJaegeuk Kim get_page(page); 1563608514deSJaegeuk Kim last_page = page; 1564608514deSJaegeuk Kim unlock_page(page); 1565608514deSJaegeuk Kim } 1566608514deSJaegeuk Kim pagevec_release(&pvec); 1567608514deSJaegeuk Kim cond_resched(); 1568608514deSJaegeuk Kim } 1569608514deSJaegeuk Kim return last_page; 1570608514deSJaegeuk Kim } 1571608514deSJaegeuk Kim 1572d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1573b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 157450fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1575faa24895SJaegeuk Kim { 1576faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1577faa24895SJaegeuk Kim nid_t nid; 1578faa24895SJaegeuk Kim struct node_info ni; 1579faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1580faa24895SJaegeuk Kim .sbi = sbi, 158139d787beSChao Yu .ino = ino_of_node(page), 1582faa24895SJaegeuk Kim .type = NODE, 1583faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1584faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1585faa24895SJaegeuk Kim .page = page, 1586faa24895SJaegeuk Kim .encrypted_page = NULL, 1587d68f735bSJaegeuk Kim .submitted = false, 1588b0af6d49SChao Yu .io_type = io_type, 1589578c6478SYufen Yu .io_wbc = wbc, 1590faa24895SJaegeuk Kim }; 159150fa53ecSChao Yu unsigned int seq; 1592faa24895SJaegeuk Kim 1593faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1594faa24895SJaegeuk Kim 15956d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 15966d7c865cSJaegeuk Kim ClearPageUptodate(page); 15976d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 15986d7c865cSJaegeuk Kim unlock_page(page); 15996d7c865cSJaegeuk Kim return 0; 16006d7c865cSJaegeuk Kim } 1601db198ae0SChao Yu 1602faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1603faa24895SJaegeuk Kim goto redirty_out; 1604faa24895SJaegeuk Kim 1605100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1606100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1607fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1608fd8c8cafSChao Yu goto redirty_out; 1609fd8c8cafSChao Yu 1610faa24895SJaegeuk Kim /* get old block addr of this node page */ 1611faa24895SJaegeuk Kim nid = nid_of_node(page); 1612faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1613faa24895SJaegeuk Kim 1614a9419b63SJaegeuk Kim if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) 16157735730dSChao Yu goto redirty_out; 16167735730dSChao Yu 1617faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1618e4544b63STim Murray if (!f2fs_down_read_trylock(&sbi->node_write)) 1619faa24895SJaegeuk Kim goto redirty_out; 1620faa24895SJaegeuk Kim } else { 1621e4544b63STim Murray f2fs_down_read(&sbi->node_write); 1622faa24895SJaegeuk Kim } 1623faa24895SJaegeuk Kim 1624faa24895SJaegeuk Kim /* This page is already truncated */ 1625faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1626faa24895SJaegeuk Kim ClearPageUptodate(page); 1627faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1628e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1629faa24895SJaegeuk Kim unlock_page(page); 1630faa24895SJaegeuk Kim return 0; 1631faa24895SJaegeuk Kim } 1632faa24895SJaegeuk Kim 1633c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 163493770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 163593770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 1636e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1637c9b60788SChao Yu goto redirty_out; 163889d13c38SJaegeuk Kim } 1639c9b60788SChao Yu 1640c550e25bSJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi)) 1641e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1642e7c75ab0SJaegeuk Kim 1643dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 164450fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 164550fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 164650fa53ecSChao Yu if (seq_id) 164750fa53ecSChao Yu *seq_id = seq; 164850fa53ecSChao Yu } 164950fa53ecSChao Yu 1650dc5a9412SChao Yu set_page_writeback(page); 1651dc5a9412SChao Yu ClearPageError(page); 1652dc5a9412SChao Yu 1653faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16544d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1655faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1656faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1657e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1658faa24895SJaegeuk Kim 1659d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1660bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1661d68f735bSJaegeuk Kim submitted = NULL; 1662d68f735bSJaegeuk Kim } 1663faa24895SJaegeuk Kim 1664faa24895SJaegeuk Kim unlock_page(page); 1665faa24895SJaegeuk Kim 1666d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1667b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1668d68f735bSJaegeuk Kim submitted = NULL; 1669d68f735bSJaegeuk Kim } 1670d68f735bSJaegeuk Kim if (submitted) 1671d68f735bSJaegeuk Kim *submitted = fio.submitted; 1672faa24895SJaegeuk Kim 1673401db79fSYunlong Song if (do_balance) 1674401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1675faa24895SJaegeuk Kim return 0; 1676faa24895SJaegeuk Kim 1677faa24895SJaegeuk Kim redirty_out: 1678faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1679faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1680faa24895SJaegeuk Kim } 1681faa24895SJaegeuk Kim 168248018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1683f15194fcSYunlei He { 168448018b4cSChao Yu int err = 0; 168548018b4cSChao Yu 1686f15194fcSYunlei He if (gc_type == FG_GC) { 1687f15194fcSYunlei He struct writeback_control wbc = { 1688f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1689f15194fcSYunlei He .nr_to_write = 1, 1690f15194fcSYunlei He .for_reclaim = 0, 1691f15194fcSYunlei He }; 1692f15194fcSYunlei He 1693bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16948d64d365SChao Yu 16958d64d365SChao Yu set_page_dirty(node_page); 16968d64d365SChao Yu 169748018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 169848018b4cSChao Yu err = -EAGAIN; 1699f15194fcSYunlei He goto out_page; 170048018b4cSChao Yu } 1701f15194fcSYunlei He 1702f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 170348018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 170448018b4cSChao Yu err = -EAGAIN; 1705f15194fcSYunlei He unlock_page(node_page); 170648018b4cSChao Yu } 1707f15194fcSYunlei He goto release_page; 1708f15194fcSYunlei He } else { 1709f15194fcSYunlei He /* set page dirty and write it */ 1710f15194fcSYunlei He if (!PageWriteback(node_page)) 1711f15194fcSYunlei He set_page_dirty(node_page); 1712f15194fcSYunlei He } 1713f15194fcSYunlei He out_page: 1714f15194fcSYunlei He unlock_page(node_page); 1715f15194fcSYunlei He release_page: 1716f15194fcSYunlei He f2fs_put_page(node_page, 0); 171748018b4cSChao Yu return err; 1718f15194fcSYunlei He } 1719f15194fcSYunlei He 1720faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1721faa24895SJaegeuk Kim struct writeback_control *wbc) 1722faa24895SJaegeuk Kim { 172350fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 172450fa53ecSChao Yu FS_NODE_IO, NULL); 1725faa24895SJaegeuk Kim } 1726faa24895SJaegeuk Kim 17274d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 172850fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 172950fa53ecSChao Yu unsigned int *seq_id) 1730608514deSJaegeuk Kim { 1731028a63a6SJan Kara pgoff_t index; 1732608514deSJaegeuk Kim struct pagevec pvec; 1733608514deSJaegeuk Kim int ret = 0; 1734608514deSJaegeuk Kim struct page *last_page = NULL; 1735608514deSJaegeuk Kim bool marked = false; 173626de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1737028a63a6SJan Kara int nr_pages; 1738bab475c5SChao Yu int nwritten = 0; 1739608514deSJaegeuk Kim 1740608514deSJaegeuk Kim if (atomic) { 1741608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1742608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1743608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1744608514deSJaegeuk Kim } 1745608514deSJaegeuk Kim retry: 174686679820SMel Gorman pagevec_init(&pvec); 1747608514deSJaegeuk Kim index = 0; 1748608514deSJaegeuk Kim 1749028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 175067fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1751028a63a6SJan Kara int i; 1752608514deSJaegeuk Kim 1753608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1754608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1755d68f735bSJaegeuk Kim bool submitted = false; 1756608514deSJaegeuk Kim 1757608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1758608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1759608514deSJaegeuk Kim pagevec_release(&pvec); 17609de69279SChao Yu ret = -EIO; 17619de69279SChao Yu goto out; 1762608514deSJaegeuk Kim } 1763608514deSJaegeuk Kim 1764608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1765608514deSJaegeuk Kim continue; 1766608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1767608514deSJaegeuk Kim continue; 1768608514deSJaegeuk Kim 1769608514deSJaegeuk Kim lock_page(page); 1770608514deSJaegeuk Kim 1771608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1772608514deSJaegeuk Kim continue_unlock: 1773608514deSJaegeuk Kim unlock_page(page); 1774608514deSJaegeuk Kim continue; 1775608514deSJaegeuk Kim } 1776608514deSJaegeuk Kim if (ino_of_node(page) != ino) 177752681375SJaegeuk Kim goto continue_unlock; 177852681375SJaegeuk Kim 1779608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1780608514deSJaegeuk Kim /* someone wrote it for us */ 1781608514deSJaegeuk Kim goto continue_unlock; 1782608514deSJaegeuk Kim } 1783608514deSJaegeuk Kim 1784bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1785608514deSJaegeuk Kim 1786d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1787d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1788d29fd172SJaegeuk Kim 1789608514deSJaegeuk Kim if (!atomic || page == last_page) { 179052681375SJaegeuk Kim set_fsync_mark(page, 1); 179147c8ebccSJaegeuk Kim percpu_counter_inc(&sbi->rf_node_block_count); 179226de9b11SJaegeuk Kim if (IS_INODE(page)) { 179326de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 179426de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17954d57b86dSChao Yu f2fs_update_inode(inode, page); 179652681375SJaegeuk Kim set_dentry_mark(page, 17974d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 179826de9b11SJaegeuk Kim } 1799608514deSJaegeuk Kim /* may be written by other thread */ 1800608514deSJaegeuk Kim if (!PageDirty(page)) 1801608514deSJaegeuk Kim set_page_dirty(page); 1802608514deSJaegeuk Kim } 1803608514deSJaegeuk Kim 1804608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1805608514deSJaegeuk Kim goto continue_unlock; 180652681375SJaegeuk Kim 1807e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1808d68f735bSJaegeuk Kim page == last_page, 1809b0af6d49SChao Yu &submitted, wbc, true, 181050fa53ecSChao Yu FS_NODE_IO, seq_id); 1811c267ec15SJaegeuk Kim if (ret) { 181252681375SJaegeuk Kim unlock_page(page); 1813608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1814608514deSJaegeuk Kim break; 1815d68f735bSJaegeuk Kim } else if (submitted) { 1816bab475c5SChao Yu nwritten++; 1817608514deSJaegeuk Kim } 18183f5f4959SChao Yu 1819608514deSJaegeuk Kim if (page == last_page) { 1820608514deSJaegeuk Kim f2fs_put_page(page, 0); 1821608514deSJaegeuk Kim marked = true; 182252681375SJaegeuk Kim break; 182352681375SJaegeuk Kim } 1824c267ec15SJaegeuk Kim } 182552681375SJaegeuk Kim pagevec_release(&pvec); 182652681375SJaegeuk Kim cond_resched(); 182752681375SJaegeuk Kim 1828608514deSJaegeuk Kim if (ret || marked) 182952681375SJaegeuk Kim break; 183052681375SJaegeuk Kim } 1831608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1832dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1833608514deSJaegeuk Kim ino, last_page->index); 1834608514deSJaegeuk Kim lock_page(last_page); 1835bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1836608514deSJaegeuk Kim set_page_dirty(last_page); 1837608514deSJaegeuk Kim unlock_page(last_page); 1838608514deSJaegeuk Kim goto retry; 1839608514deSJaegeuk Kim } 18409de69279SChao Yu out: 1841bab475c5SChao Yu if (nwritten) 1842bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1843c267ec15SJaegeuk Kim return ret ? -EIO : 0; 184452681375SJaegeuk Kim } 184552681375SJaegeuk Kim 1846052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1847052a82d8SChao Yu { 1848052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1849052a82d8SChao Yu bool clean; 1850052a82d8SChao Yu 1851052a82d8SChao Yu if (inode->i_ino != ino) 1852052a82d8SChao Yu return 0; 1853052a82d8SChao Yu 1854052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1855052a82d8SChao Yu return 0; 1856052a82d8SChao Yu 1857052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1858052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1859052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1860052a82d8SChao Yu 1861052a82d8SChao Yu if (clean) 1862052a82d8SChao Yu return 0; 1863052a82d8SChao Yu 1864052a82d8SChao Yu inode = igrab(inode); 1865052a82d8SChao Yu if (!inode) 1866052a82d8SChao Yu return 0; 1867052a82d8SChao Yu return 1; 1868052a82d8SChao Yu } 1869052a82d8SChao Yu 1870052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1871052a82d8SChao Yu { 1872052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1873052a82d8SChao Yu struct inode *inode; 1874052a82d8SChao Yu nid_t ino = ino_of_node(page); 1875052a82d8SChao Yu 1876052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1877052a82d8SChao Yu if (!inode) 1878052a82d8SChao Yu return false; 1879052a82d8SChao Yu 1880052a82d8SChao Yu f2fs_update_inode(inode, page); 1881052a82d8SChao Yu unlock_page(page); 1882052a82d8SChao Yu 1883052a82d8SChao Yu iput(inode); 1884052a82d8SChao Yu return true; 1885052a82d8SChao Yu } 1886052a82d8SChao Yu 188768e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 188834c061adSSayali Lokhande { 188934c061adSSayali Lokhande pgoff_t index = 0; 189034c061adSSayali Lokhande struct pagevec pvec; 189134c061adSSayali Lokhande int nr_pages; 189234c061adSSayali Lokhande 189334c061adSSayali Lokhande pagevec_init(&pvec); 189434c061adSSayali Lokhande 189534c061adSSayali Lokhande while ((nr_pages = pagevec_lookup_tag(&pvec, 189634c061adSSayali Lokhande NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 189734c061adSSayali Lokhande int i; 189834c061adSSayali Lokhande 189934c061adSSayali Lokhande for (i = 0; i < nr_pages; i++) { 190034c061adSSayali Lokhande struct page *page = pvec.pages[i]; 190134c061adSSayali Lokhande 190234c061adSSayali Lokhande if (!IS_DNODE(page)) 190334c061adSSayali Lokhande continue; 190434c061adSSayali Lokhande 190534c061adSSayali Lokhande lock_page(page); 190634c061adSSayali Lokhande 190734c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 190834c061adSSayali Lokhande continue_unlock: 190934c061adSSayali Lokhande unlock_page(page); 191034c061adSSayali Lokhande continue; 191134c061adSSayali Lokhande } 191234c061adSSayali Lokhande 191334c061adSSayali Lokhande if (!PageDirty(page)) { 191434c061adSSayali Lokhande /* someone wrote it for us */ 191534c061adSSayali Lokhande goto continue_unlock; 191634c061adSSayali Lokhande } 191734c061adSSayali Lokhande 191834c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1919b763f3beSChao Yu if (page_private_inline(page)) { 1920b763f3beSChao Yu clear_page_private_inline(page); 192134c061adSSayali Lokhande unlock_page(page); 192234c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 192334c061adSSayali Lokhande continue; 192434c061adSSayali Lokhande } 192534c061adSSayali Lokhande unlock_page(page); 192634c061adSSayali Lokhande } 192734c061adSSayali Lokhande pagevec_release(&pvec); 192834c061adSSayali Lokhande cond_resched(); 192934c061adSSayali Lokhande } 193034c061adSSayali Lokhande } 193134c061adSSayali Lokhande 19324d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 19334d57b86dSChao Yu struct writeback_control *wbc, 1934b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 193552681375SJaegeuk Kim { 1936028a63a6SJan Kara pgoff_t index; 193752681375SJaegeuk Kim struct pagevec pvec; 193852681375SJaegeuk Kim int step = 0; 193912bb0a8fSJaegeuk Kim int nwritten = 0; 19403f5f4959SChao Yu int ret = 0; 1941c29fd0c0SChao Yu int nr_pages, done = 0; 1942e05df3b1SJaegeuk Kim 194386679820SMel Gorman pagevec_init(&pvec); 1944e05df3b1SJaegeuk Kim 1945e05df3b1SJaegeuk Kim next_step: 1946e05df3b1SJaegeuk Kim index = 0; 1947e05df3b1SJaegeuk Kim 1948c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1949c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1950028a63a6SJan Kara int i; 1951e05df3b1SJaegeuk Kim 1952e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1953e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1954d68f735bSJaegeuk Kim bool submitted = false; 1955e05df3b1SJaegeuk Kim 1956c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1957c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1958c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1959c29fd0c0SChao Yu done = 1; 1960c29fd0c0SChao Yu break; 1961c29fd0c0SChao Yu } 1962c29fd0c0SChao Yu 1963e05df3b1SJaegeuk Kim /* 1964e05df3b1SJaegeuk Kim * flushing sequence with step: 1965e05df3b1SJaegeuk Kim * 0. indirect nodes 1966e05df3b1SJaegeuk Kim * 1. dentry dnodes 1967e05df3b1SJaegeuk Kim * 2. file dnodes 1968e05df3b1SJaegeuk Kim */ 1969e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1970e05df3b1SJaegeuk Kim continue; 1971e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1972e05df3b1SJaegeuk Kim is_cold_node(page))) 1973e05df3b1SJaegeuk Kim continue; 1974e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1975e05df3b1SJaegeuk Kim !is_cold_node(page))) 1976e05df3b1SJaegeuk Kim continue; 19779a4cbc9eSChao Yu lock_node: 19784b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 19794b270a8cSChao Yu lock_page(page); 19804b270a8cSChao Yu else if (!trylock_page(page)) 1981e05df3b1SJaegeuk Kim continue; 1982e05df3b1SJaegeuk Kim 19834ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1984e05df3b1SJaegeuk Kim continue_unlock: 1985e05df3b1SJaegeuk Kim unlock_page(page); 1986e05df3b1SJaegeuk Kim continue; 1987e05df3b1SJaegeuk Kim } 1988e05df3b1SJaegeuk Kim 1989e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1990e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1991e05df3b1SJaegeuk Kim goto continue_unlock; 1992e05df3b1SJaegeuk Kim } 1993e05df3b1SJaegeuk Kim 1994b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 1995b0f3b87fSJaegeuk Kim if (!do_balance) 1996b0f3b87fSJaegeuk Kim goto write_node; 1997b0f3b87fSJaegeuk Kim 1998b0f3b87fSJaegeuk Kim /* flush inline_data */ 1999b763f3beSChao Yu if (page_private_inline(page)) { 2000b763f3beSChao Yu clear_page_private_inline(page); 20012049d4fcSJaegeuk Kim unlock_page(page); 20022049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 20039a4cbc9eSChao Yu goto lock_node; 20042049d4fcSJaegeuk Kim } 20052049d4fcSJaegeuk Kim 2006052a82d8SChao Yu /* flush dirty inode */ 20077859e97fSJaegeuk Kim if (IS_INODE(page) && flush_dirty_inode(page)) 2008052a82d8SChao Yu goto lock_node; 2009b0f3b87fSJaegeuk Kim write_node: 2010bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 2011fa3d2bdfSJaegeuk Kim 2012e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 2013e05df3b1SJaegeuk Kim goto continue_unlock; 2014e05df3b1SJaegeuk Kim 2015e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 2016e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 201752746519SJaegeuk Kim 2018401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 201950fa53ecSChao Yu wbc, do_balance, io_type, NULL); 2020d68f735bSJaegeuk Kim if (ret) 202152746519SJaegeuk Kim unlock_page(page); 2022d68f735bSJaegeuk Kim else if (submitted) 20233f5f4959SChao Yu nwritten++; 2024e05df3b1SJaegeuk Kim 2025e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 2026e05df3b1SJaegeuk Kim break; 2027e05df3b1SJaegeuk Kim } 2028e05df3b1SJaegeuk Kim pagevec_release(&pvec); 2029e05df3b1SJaegeuk Kim cond_resched(); 2030e05df3b1SJaegeuk Kim 2031e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 2032e05df3b1SJaegeuk Kim step = 2; 2033e05df3b1SJaegeuk Kim break; 2034e05df3b1SJaegeuk Kim } 2035e05df3b1SJaegeuk Kim } 2036e05df3b1SJaegeuk Kim 2037e05df3b1SJaegeuk Kim if (step < 2) { 2038100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2039100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2040fd8c8cafSChao Yu goto out; 2041e05df3b1SJaegeuk Kim step++; 2042e05df3b1SJaegeuk Kim goto next_step; 2043e05df3b1SJaegeuk Kim } 2044fd8c8cafSChao Yu out: 20453f5f4959SChao Yu if (nwritten) 2046b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2047db198ae0SChao Yu 2048db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2049db198ae0SChao Yu return -EIO; 20503f5f4959SChao Yu return ret; 2051e05df3b1SJaegeuk Kim } 2052e05df3b1SJaegeuk Kim 205350fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 205450fa53ecSChao Yu unsigned int seq_id) 2055cfe58f9dSJaegeuk Kim { 205650fa53ecSChao Yu struct fsync_node_entry *fn; 205750fa53ecSChao Yu struct page *page; 205850fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 205950fa53ecSChao Yu unsigned long flags; 206050fa53ecSChao Yu unsigned int cur_seq_id = 0; 2061280db3c8SMiklos Szeredi int ret2, ret = 0; 2062cfe58f9dSJaegeuk Kim 206350fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 206450fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 206550fa53ecSChao Yu if (list_empty(head)) { 206650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 206750fa53ecSChao Yu break; 206850fa53ecSChao Yu } 206950fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 207050fa53ecSChao Yu if (fn->seq_id > seq_id) { 207150fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 207250fa53ecSChao Yu break; 207350fa53ecSChao Yu } 207450fa53ecSChao Yu cur_seq_id = fn->seq_id; 207550fa53ecSChao Yu page = fn->page; 207650fa53ecSChao Yu get_page(page); 207750fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20784ef51a8fSJaegeuk Kim 2079bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 2080cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 2081cfe58f9dSJaegeuk Kim ret = -EIO; 208250fa53ecSChao Yu 208350fa53ecSChao Yu put_page(page); 208450fa53ecSChao Yu 208550fa53ecSChao Yu if (ret) 208650fa53ecSChao Yu break; 2087cfe58f9dSJaegeuk Kim } 2088cfe58f9dSJaegeuk Kim 2089280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 2090cfe58f9dSJaegeuk Kim if (!ret) 2091cfe58f9dSJaegeuk Kim ret = ret2; 209250fa53ecSChao Yu 2093cfe58f9dSJaegeuk Kim return ret; 2094cfe58f9dSJaegeuk Kim } 2095cfe58f9dSJaegeuk Kim 2096e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 2097e05df3b1SJaegeuk Kim struct writeback_control *wbc) 2098e05df3b1SJaegeuk Kim { 20994081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 21009dfa1bafSJaegeuk Kim struct blk_plug plug; 210150c8cdb3SJaegeuk Kim long diff; 2102e05df3b1SJaegeuk Kim 21030771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 21040771fcc7SChao Yu goto skip_write; 21050771fcc7SChao Yu 21064660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 21077bcd0cfaSChao Yu f2fs_balance_fs_bg(sbi, true); 2108e05df3b1SJaegeuk Kim 2109a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 2110812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 2111812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 2112812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 2113d3baf95dSJaegeuk Kim goto skip_write; 2114a7fdffbdSJaegeuk Kim 2115c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2116c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 211734415099SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) { 211834415099SChao Yu /* to avoid potential deadlock */ 211934415099SChao Yu if (current->plug) 212034415099SChao Yu blk_finish_plug(current->plug); 2121c29fd0c0SChao Yu goto skip_write; 212234415099SChao Yu } 2123c29fd0c0SChao Yu 2124d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2125d31c7c3fSYunlei He 212650c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 21279dfa1bafSJaegeuk Kim blk_start_plug(&plug); 21284d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 21299dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 213050c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2131c29fd0c0SChao Yu 2132c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2133c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2134e05df3b1SJaegeuk Kim return 0; 2135d3baf95dSJaegeuk Kim 2136d3baf95dSJaegeuk Kim skip_write: 2137d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2138d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2139d3baf95dSJaegeuk Kim return 0; 2140e05df3b1SJaegeuk Kim } 2141e05df3b1SJaegeuk Kim 2142cbc975b1SMatthew Wilcox (Oracle) static bool f2fs_dirty_node_folio(struct address_space *mapping, 2143cbc975b1SMatthew Wilcox (Oracle) struct folio *folio) 2144e05df3b1SJaegeuk Kim { 2145cbc975b1SMatthew Wilcox (Oracle) trace_f2fs_set_page_dirty(&folio->page, NODE); 214626c6b887SJaegeuk Kim 2147cbc975b1SMatthew Wilcox (Oracle) if (!folio_test_uptodate(folio)) 2148cbc975b1SMatthew Wilcox (Oracle) folio_mark_uptodate(folio); 214954c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 2150cbc975b1SMatthew Wilcox (Oracle) if (IS_INODE(&folio->page)) 215129c87793SMatthew Wilcox (Oracle) f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page); 215254c55c4eSWeichao Guo #endif 21539b7eadd9SShuqi Zhang if (filemap_dirty_folio(mapping, folio)) { 215429c87793SMatthew Wilcox (Oracle) inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 2155cbc975b1SMatthew Wilcox (Oracle) set_page_private_reference(&folio->page); 2156cbc975b1SMatthew Wilcox (Oracle) return true; 2157e05df3b1SJaegeuk Kim } 2158cbc975b1SMatthew Wilcox (Oracle) return false; 2159e05df3b1SJaegeuk Kim } 2160e05df3b1SJaegeuk Kim 21610a8165d7SJaegeuk Kim /* 2162e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2163e05df3b1SJaegeuk Kim */ 2164e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2165e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2166e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2167cbc975b1SMatthew Wilcox (Oracle) .dirty_folio = f2fs_dirty_node_folio, 216891503996SMatthew Wilcox (Oracle) .invalidate_folio = f2fs_invalidate_folio, 2169c26cd045SMatthew Wilcox (Oracle) .release_folio = f2fs_release_folio, 21701d5b9bd6SMatthew Wilcox (Oracle) .migrate_folio = filemap_migrate_folio, 2171e05df3b1SJaegeuk Kim }; 2172e05df3b1SJaegeuk Kim 21738a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 21748a7ed66aSJaegeuk Kim nid_t n) 2175e05df3b1SJaegeuk Kim { 21768a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 21773aa770a9SNamjae Jeon } 2178e05df3b1SJaegeuk Kim 21799a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2180b815bdc7SLiu Song struct free_nid *i) 2181e05df3b1SJaegeuk Kim { 2182b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2183eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 21845f029c04SYi Zhuang 2185eb0aa4b8SJaegeuk Kim if (err) 2186eb0aa4b8SJaegeuk Kim return err; 2187eb0aa4b8SJaegeuk Kim 2188b815bdc7SLiu Song nm_i->nid_cnt[FREE_NID]++; 21899a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2190eb0aa4b8SJaegeuk Kim return 0; 2191b8559dc2SChao Yu } 2192b8559dc2SChao Yu 21939a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2194a0761f63SFan Li struct free_nid *i, enum nid_state state) 2195b8559dc2SChao Yu { 2196b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2197b8559dc2SChao Yu 21989a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 21999a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 22009a4ffdf5SChao Yu if (state == FREE_NID) 2201e05df3b1SJaegeuk Kim list_del(&i->list); 22028a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2203e05df3b1SJaegeuk Kim } 2204e05df3b1SJaegeuk Kim 2205a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2206a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2207a0761f63SFan Li { 2208a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2209a0761f63SFan Li 2210a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2211a0761f63SFan Li i->state = dst_state; 2212a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2213a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2214a0761f63SFan Li 2215a0761f63SFan Li switch (dst_state) { 2216a0761f63SFan Li case PREALLOC_NID: 2217a0761f63SFan Li list_del(&i->list); 2218a0761f63SFan Li break; 2219a0761f63SFan Li case FREE_NID: 2220a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2221a0761f63SFan Li break; 2222a0761f63SFan Li default: 2223a0761f63SFan Li BUG_ON(1); 2224a0761f63SFan Li } 2225a0761f63SFan Li } 2226a0761f63SFan Li 222794c821fbSChao Yu bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi) 222894c821fbSChao Yu { 222994c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 223094c821fbSChao Yu unsigned int i; 223194c821fbSChao Yu bool ret = true; 223294c821fbSChao Yu 2233e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 223494c821fbSChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 223594c821fbSChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) { 223694c821fbSChao Yu ret = false; 223794c821fbSChao Yu break; 223894c821fbSChao Yu } 223994c821fbSChao Yu } 2240e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 224194c821fbSChao Yu 224294c821fbSChao Yu return ret; 224394c821fbSChao Yu } 224494c821fbSChao Yu 22455921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 22465921aaa1SLiFan bool set, bool build) 22475921aaa1SLiFan { 22485921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 22495921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 22505921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 22515921aaa1SLiFan 22525921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 22535921aaa1SLiFan return; 22545921aaa1SLiFan 22555921aaa1SLiFan if (set) { 22565921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22575921aaa1SLiFan return; 22585921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22595921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 22605921aaa1SLiFan } else { 22615921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22625921aaa1SLiFan return; 22635921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22645921aaa1SLiFan if (!build) 22655921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 22665921aaa1SLiFan } 22675921aaa1SLiFan } 22685921aaa1SLiFan 22694ac91242SChao Yu /* return if the nid is recognized as free */ 22705921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 22715921aaa1SLiFan nid_t nid, bool build, bool update) 2272e05df3b1SJaegeuk Kim { 22736fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 227430a61ddfSChao Yu struct free_nid *i, *e; 227559bbd474SJaegeuk Kim struct nat_entry *ne; 227630a61ddfSChao Yu int err = -EINVAL; 227730a61ddfSChao Yu bool ret = false; 22789198acebSJaegeuk Kim 22799198acebSJaegeuk Kim /* 0 nid should not be used */ 2280cfb271d4SChao Yu if (unlikely(nid == 0)) 22814ac91242SChao Yu return false; 228259bbd474SJaegeuk Kim 2283626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2284626bcf2bSChao Yu return false; 2285626bcf2bSChao Yu 228632410577SChao Yu i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL); 2287e05df3b1SJaegeuk Kim i->nid = nid; 22889a4ffdf5SChao Yu i->state = FREE_NID; 2289e05df3b1SJaegeuk Kim 22905921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2291769ec6e5SJaegeuk Kim 2292b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 229330a61ddfSChao Yu 229430a61ddfSChao Yu if (build) { 229530a61ddfSChao Yu /* 229630a61ddfSChao Yu * Thread A Thread B 229730a61ddfSChao Yu * - f2fs_create 229830a61ddfSChao Yu * - f2fs_new_inode 22994d57b86dSChao Yu * - f2fs_alloc_nid 23009a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 230130a61ddfSChao Yu * - f2fs_balance_fs_bg 23024d57b86dSChao Yu * - f2fs_build_free_nids 23034d57b86dSChao Yu * - __f2fs_build_free_nids 230430a61ddfSChao Yu * - scan_nat_page 230530a61ddfSChao Yu * - add_free_nid 230630a61ddfSChao Yu * - __lookup_nat_cache 230730a61ddfSChao Yu * - f2fs_add_link 23084d57b86dSChao Yu * - f2fs_init_inode_metadata 23094d57b86dSChao Yu * - f2fs_new_inode_page 23104d57b86dSChao Yu * - f2fs_new_node_page 231130a61ddfSChao Yu * - set_node_addr 23124d57b86dSChao Yu * - f2fs_alloc_nid_done 23139a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 23149a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 231530a61ddfSChao Yu */ 231630a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 231730a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 231830a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 231930a61ddfSChao Yu goto err_out; 232030a61ddfSChao Yu 232130a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 232230a61ddfSChao Yu if (e) { 23239a4ffdf5SChao Yu if (e->state == FREE_NID) 232430a61ddfSChao Yu ret = true; 232530a61ddfSChao Yu goto err_out; 232630a61ddfSChao Yu } 232730a61ddfSChao Yu } 232830a61ddfSChao Yu ret = true; 2329b815bdc7SLiu Song err = __insert_free_nid(sbi, i); 233030a61ddfSChao Yu err_out: 23315921aaa1SLiFan if (update) { 23325921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 23335921aaa1SLiFan if (!build) 23345921aaa1SLiFan nm_i->available_nids++; 23355921aaa1SLiFan } 2336b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2337769ec6e5SJaegeuk Kim radix_tree_preload_end(); 23385921aaa1SLiFan 233930a61ddfSChao Yu if (err) 2340e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 234130a61ddfSChao Yu return ret; 2342e05df3b1SJaegeuk Kim } 2343e05df3b1SJaegeuk Kim 2344b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2345e05df3b1SJaegeuk Kim { 2346b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2347e05df3b1SJaegeuk Kim struct free_nid *i; 2348cf0ee0f0SChao Yu bool need_free = false; 2349cf0ee0f0SChao Yu 2350b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23518a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 23529a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2353a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2354cf0ee0f0SChao Yu need_free = true; 2355e05df3b1SJaegeuk Kim } 2356b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2357cf0ee0f0SChao Yu 2358cf0ee0f0SChao Yu if (need_free) 2359cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2360e05df3b1SJaegeuk Kim } 2361e05df3b1SJaegeuk Kim 2362e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2363e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2364e05df3b1SJaegeuk Kim { 23656fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2366e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2367e05df3b1SJaegeuk Kim block_t blk_addr; 23684ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2369e05df3b1SJaegeuk Kim int i; 2370e05df3b1SJaegeuk Kim 237123380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 23724ac91242SChao Yu 2373e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2374e05df3b1SJaegeuk Kim 2375e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2376cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 237704431c44SJaegeuk Kim break; 237823d38844SHaicheng Li 2379e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2380e2374015SChao Yu 2381e2374015SChao Yu if (blk_addr == NEW_ADDR) 2382e2374015SChao Yu return -EINVAL; 2383e2374015SChao Yu 23845921aaa1SLiFan if (blk_addr == NULL_ADDR) { 23855921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 23865921aaa1SLiFan } else { 2387346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 23885921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2389346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2390e05df3b1SJaegeuk Kim } 2391e05df3b1SJaegeuk Kim } 2392e2374015SChao Yu 2393e2374015SChao Yu return 0; 23945921aaa1SLiFan } 2395e05df3b1SJaegeuk Kim 23962fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 23974ac91242SChao Yu { 23984ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 23994ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 24002fbaa25fSChao Yu int i; 24014ac91242SChao Yu 24024ac91242SChao Yu down_read(&curseg->journal_rwsem); 24034ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 24044ac91242SChao Yu block_t addr; 24054ac91242SChao Yu nid_t nid; 24064ac91242SChao Yu 24074ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 24084ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 24094ac91242SChao Yu if (addr == NULL_ADDR) 24105921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24114ac91242SChao Yu else 24124ac91242SChao Yu remove_free_nid(sbi, nid); 24134ac91242SChao Yu } 24144ac91242SChao Yu up_read(&curseg->journal_rwsem); 24152fbaa25fSChao Yu } 24162fbaa25fSChao Yu 2417e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 24184ac91242SChao Yu { 24194ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 24204ac91242SChao Yu unsigned int i, idx; 242197456574SFan Li nid_t nid; 24224ac91242SChao Yu 2423e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 24244ac91242SChao Yu 24254ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 24264ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 24274ac91242SChao Yu continue; 24284ac91242SChao Yu if (!nm_i->free_nid_count[i]) 24294ac91242SChao Yu continue; 24304ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 243197456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 243297456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 243397456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 243497456574SFan Li break; 24354ac91242SChao Yu 24364ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 24375921aaa1SLiFan add_free_nid(sbi, nid, true, false); 24384ac91242SChao Yu 24399a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 24404ac91242SChao Yu goto out; 24414ac91242SChao Yu } 24424ac91242SChao Yu } 24434ac91242SChao Yu out: 24442fbaa25fSChao Yu scan_curseg_cache(sbi); 24454ac91242SChao Yu 2446e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 24474ac91242SChao Yu } 24484ac91242SChao Yu 2449e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 24504d57b86dSChao Yu bool sync, bool mount) 2451e05df3b1SJaegeuk Kim { 2452e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2453e2374015SChao Yu int i = 0, ret; 245455008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2455e05df3b1SJaegeuk Kim 2456e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2457e9cdd307SYunlei He nid = 0; 2458e9cdd307SYunlei He 2459e2cab031SSahitya Tummala if (unlikely(nid % NAT_ENTRY_PER_BLOCK)) 2460e2cab031SSahitya Tummala nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK; 2461e2cab031SSahitya Tummala 246255008d84SJaegeuk Kim /* Enough entries */ 24639a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2464e2374015SChao Yu return 0; 2465e05df3b1SJaegeuk Kim 24664d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2467e2374015SChao Yu return 0; 2468e05df3b1SJaegeuk Kim 24694ac91242SChao Yu if (!mount) { 24704ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 24714ac91242SChao Yu scan_free_nid_bits(sbi); 24724ac91242SChao Yu 247374986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2474e2374015SChao Yu return 0; 247522ad0b6aSJaegeuk Kim } 247622ad0b6aSJaegeuk Kim 247755008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 24784d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 247926879fb1SChao Yu META_NAT, true); 2480e05df3b1SJaegeuk Kim 2481e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 2482a5131193SJaegeuk Kim 2483e05df3b1SJaegeuk Kim while (1) { 248466e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 248566e83361SYunlei He nm_i->nat_block_bitmap)) { 2486e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2487e05df3b1SJaegeuk Kim 2488edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2489edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2490edc55aafSJaegeuk Kim } else { 2491e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2492e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2493edc55aafSJaegeuk Kim } 2494e2374015SChao Yu 2495e2374015SChao Yu if (ret) { 2496e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 2497dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2498edc55aafSJaegeuk Kim return ret; 2499e2374015SChao Yu } 250066e83361SYunlei He } 2501e05df3b1SJaegeuk Kim 2502e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2503cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2504e05df3b1SJaegeuk Kim nid = 0; 250555008d84SJaegeuk Kim 2506a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2507e05df3b1SJaegeuk Kim break; 2508e05df3b1SJaegeuk Kim } 2509e05df3b1SJaegeuk Kim 251055008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 251155008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2512e05df3b1SJaegeuk Kim 2513e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 25142fbaa25fSChao Yu scan_curseg_cache(sbi); 2515dfc08a12SChao Yu 2516e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 25172db2388fSChao Yu 25184d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2519ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2520e2374015SChao Yu 2521e2374015SChao Yu return 0; 2522e05df3b1SJaegeuk Kim } 2523e05df3b1SJaegeuk Kim 2524e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 25252411cf5bSChao Yu { 2526e2374015SChao Yu int ret; 2527e2374015SChao Yu 25282411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2529e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 25302411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2531e2374015SChao Yu 2532e2374015SChao Yu return ret; 25332411cf5bSChao Yu } 25342411cf5bSChao Yu 2535e05df3b1SJaegeuk Kim /* 2536e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2537e05df3b1SJaegeuk Kim * from second parameter of this function. 2538e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2539e05df3b1SJaegeuk Kim */ 25404d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2541e05df3b1SJaegeuk Kim { 2542e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2543e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2544e05df3b1SJaegeuk Kim retry: 254555523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 2546c45d6002SChao Yu f2fs_show_injection_info(sbi, FAULT_ALLOC_NID); 2547cb78942bSJaegeuk Kim return false; 254855523519SChao Yu } 25497fa750a1SArnd Bergmann 2550b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2551e05df3b1SJaegeuk Kim 255204d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 255304d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 255404d47e67SChao Yu return false; 255504d47e67SChao Yu } 2556e05df3b1SJaegeuk Kim 25574d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 25584d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 25599a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 25609a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2561b8559dc2SChao Yu struct free_nid, list); 2562e05df3b1SJaegeuk Kim *nid = i->nid; 2563b8559dc2SChao Yu 2564a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 256504d47e67SChao Yu nm_i->available_nids--; 25664ac91242SChao Yu 2567346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 25684ac91242SChao Yu 2569b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2570e05df3b1SJaegeuk Kim return true; 2571e05df3b1SJaegeuk Kim } 2572b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 257355008d84SJaegeuk Kim 257455008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2575f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 257655008d84SJaegeuk Kim goto retry; 2577f84262b0SJaegeuk Kim return false; 257855008d84SJaegeuk Kim } 2579e05df3b1SJaegeuk Kim 25800a8165d7SJaegeuk Kim /* 25814d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2582e05df3b1SJaegeuk Kim */ 25834d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2584e05df3b1SJaegeuk Kim { 2585e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2586e05df3b1SJaegeuk Kim struct free_nid *i; 2587e05df3b1SJaegeuk Kim 2588b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25898a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2590b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2591a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2592b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2593cf0ee0f0SChao Yu 2594cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2595e05df3b1SJaegeuk Kim } 2596e05df3b1SJaegeuk Kim 25970a8165d7SJaegeuk Kim /* 25984d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2599e05df3b1SJaegeuk Kim */ 26004d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2601e05df3b1SJaegeuk Kim { 260249952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 260349952fa1SJaegeuk Kim struct free_nid *i; 2604cf0ee0f0SChao Yu bool need_free = false; 260549952fa1SJaegeuk Kim 260665985d93SJaegeuk Kim if (!nid) 260765985d93SJaegeuk Kim return; 260865985d93SJaegeuk Kim 2609b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26108a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2611b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2612b8559dc2SChao Yu 26134d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2614a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2615cf0ee0f0SChao Yu need_free = true; 261695630cbaSHaicheng Li } else { 2617a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 261895630cbaSHaicheng Li } 261904d47e67SChao Yu 262004d47e67SChao Yu nm_i->available_nids++; 262104d47e67SChao Yu 2622346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 26234ac91242SChao Yu 2624b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2625cf0ee0f0SChao Yu 2626cf0ee0f0SChao Yu if (need_free) 2627cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2628e05df3b1SJaegeuk Kim } 2629e05df3b1SJaegeuk Kim 26304d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 263131696580SChao Yu { 263231696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 263331696580SChao Yu int nr = nr_shrink; 263431696580SChao Yu 26359a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2636ad4edb83SJaegeuk Kim return 0; 2637ad4edb83SJaegeuk Kim 263831696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 263931696580SChao Yu return 0; 264031696580SChao Yu 2641042be373SChao Yu while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) { 2642042be373SChao Yu struct free_nid *i, *next; 2643042be373SChao Yu unsigned int batch = SHRINK_NID_BATCH_SIZE; 2644042be373SChao Yu 2645b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 26469a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2647042be373SChao Yu if (!nr_shrink || !batch || 26489a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 264931696580SChao Yu break; 2650a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 265131696580SChao Yu kmem_cache_free(free_nid_slab, i); 265231696580SChao Yu nr_shrink--; 2653042be373SChao Yu batch--; 265431696580SChao Yu } 2655b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2656042be373SChao Yu } 2657042be373SChao Yu 265831696580SChao Yu mutex_unlock(&nm_i->build_lock); 265931696580SChao Yu 266031696580SChao Yu return nr - nr_shrink; 266131696580SChao Yu } 266231696580SChao Yu 26639627a7b3SChao Yu int f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 266428cdce04SChao Yu { 266528cdce04SChao Yu void *src_addr, *dst_addr; 266628cdce04SChao Yu size_t inline_size; 266728cdce04SChao Yu struct page *ipage; 266828cdce04SChao Yu struct f2fs_inode *ri; 266928cdce04SChao Yu 26704d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 26719627a7b3SChao Yu if (IS_ERR(ipage)) 26729627a7b3SChao Yu return PTR_ERR(ipage); 267328cdce04SChao Yu 2674e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 26751eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 267696dd0251SChao Yu if (!f2fs_has_inline_xattr(inode)) { 26771eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 267896dd0251SChao Yu stat_inc_inline_xattr(inode); 267996dd0251SChao Yu } 26801eca05aaSYunlei He } else { 268196dd0251SChao Yu if (f2fs_has_inline_xattr(inode)) { 268296dd0251SChao Yu stat_dec_inline_xattr(inode); 268391942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 268496dd0251SChao Yu } 2685e3b4d43fSJaegeuk Kim goto update_inode; 2686e3b4d43fSJaegeuk Kim } 2687e3b4d43fSJaegeuk Kim 26886afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 26896afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 269028cdce04SChao Yu inline_size = inline_xattr_size(inode); 269128cdce04SChao Yu 2692bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 269328cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2694e3b4d43fSJaegeuk Kim update_inode: 26954d57b86dSChao Yu f2fs_update_inode(inode, ipage); 269628cdce04SChao Yu f2fs_put_page(ipage, 1); 26979627a7b3SChao Yu return 0; 269828cdce04SChao Yu } 269928cdce04SChao Yu 27004d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2701abb2366cSJaegeuk Kim { 27024081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2703abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 270487905682SYunlei He nid_t new_xnid; 270587905682SYunlei He struct dnode_of_data dn; 2706abb2366cSJaegeuk Kim struct node_info ni; 2707d260081cSChao Yu struct page *xpage; 27087735730dSChao Yu int err; 2709abb2366cSJaegeuk Kim 2710abb2366cSJaegeuk Kim if (!prev_xnid) 2711abb2366cSJaegeuk Kim goto recover_xnid; 2712abb2366cSJaegeuk Kim 2713d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2714a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, prev_xnid, &ni, false); 27157735730dSChao Yu if (err) 27167735730dSChao Yu return err; 27177735730dSChao Yu 27184d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2719000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2720479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2721abb2366cSJaegeuk Kim 2722abb2366cSJaegeuk Kim recover_xnid: 2723d260081cSChao Yu /* 2: update xattr nid in inode */ 27244d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 272587905682SYunlei He return -ENOSPC; 272687905682SYunlei He 272787905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 27284d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 272987905682SYunlei He if (IS_ERR(xpage)) { 27304d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 273187905682SYunlei He return PTR_ERR(xpage); 273287905682SYunlei He } 273387905682SYunlei He 27344d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 27354d57b86dSChao Yu f2fs_update_inode_page(inode); 2736abb2366cSJaegeuk Kim 2737d260081cSChao Yu /* 3: update and set xattr node page dirty */ 273887905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2739d260081cSChao Yu 2740d260081cSChao Yu set_page_dirty(xpage); 2741d260081cSChao Yu f2fs_put_page(xpage, 1); 2742abb2366cSJaegeuk Kim 2743d260081cSChao Yu return 0; 2744abb2366cSJaegeuk Kim } 2745abb2366cSJaegeuk Kim 27464d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2747e05df3b1SJaegeuk Kim { 274858bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2749e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2750e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2751e05df3b1SJaegeuk Kim struct page *ipage; 27527735730dSChao Yu int err; 2753e05df3b1SJaegeuk Kim 2754a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, ino, &old_ni, false); 27557735730dSChao Yu if (err) 27567735730dSChao Yu return err; 2757e8271fa3SJaegeuk Kim 2758e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2759e8271fa3SJaegeuk Kim return -EINVAL; 2760e8ea9b3dSJaegeuk Kim retry: 2761300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2762e8ea9b3dSJaegeuk Kim if (!ipage) { 27634034247aSNeilBrown memalloc_retry_wait(GFP_NOFS); 2764e8ea9b3dSJaegeuk Kim goto retry; 2765e8ea9b3dSJaegeuk Kim } 2766e05df3b1SJaegeuk Kim 2767e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2768b8559dc2SChao Yu remove_free_nid(sbi, ino); 2769e05df3b1SJaegeuk Kim 2770237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2771e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2772e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2773ef2a0071SChao Yu set_cold_node(ipage, false); 2774e05df3b1SJaegeuk Kim 277558bfaf44SJaegeuk Kim src = F2FS_INODE(page); 277658bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2777e05df3b1SJaegeuk Kim 277836218b81SZheng Yongjun memcpy(dst, src, offsetof(struct f2fs_inode, i_ext)); 277958bfaf44SJaegeuk Kim dst->i_size = 0; 278058bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 278158bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 278258bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 27837a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 27845c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 27857a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 27866afc662eSChao Yu 27877beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 27886afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27896afc662eSChao Yu i_inline_xattr_size)) 27906afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 27916afc662eSChao Yu 27927beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 27935c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27945c57132eSChao Yu i_projid)) 27955c57132eSChao Yu dst->i_projid = src->i_projid; 27965cd1f387SChao Yu 27977beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 27985cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27995cd1f387SChao Yu i_crtime_nsec)) { 28005cd1f387SChao Yu dst->i_crtime = src->i_crtime; 28015cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 28025cd1f387SChao Yu } 28035c57132eSChao Yu } 2804e05df3b1SJaegeuk Kim 2805e05df3b1SJaegeuk Kim new_ni = old_ni; 2806e05df3b1SJaegeuk Kim new_ni.ino = ino; 2807e05df3b1SJaegeuk Kim 28080abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 280965e5cd0aSJaegeuk Kim WARN_ON(1); 2810479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2811e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2812617deb8cSJaegeuk Kim set_page_dirty(ipage); 2813e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2814e05df3b1SJaegeuk Kim return 0; 2815e05df3b1SJaegeuk Kim } 2816e05df3b1SJaegeuk Kim 28177735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2818e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2819e05df3b1SJaegeuk Kim { 2820e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2821e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2822e05df3b1SJaegeuk Kim block_t addr; 28239ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2824e05df3b1SJaegeuk Kim 2825e05df3b1SJaegeuk Kim /* scan the node segment */ 2826e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2827e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2828e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2829e05df3b1SJaegeuk Kim 28309ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 28315f7136dbSMatthew Wilcox (Oracle) nrpages = bio_max_segs(last_offset - i); 2832393ff91fSJaegeuk Kim 28339af0ff1cSChao Yu /* readahead node pages */ 28344d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 28359af0ff1cSChao Yu 28369ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 28374d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2838393ff91fSJaegeuk Kim 28397735730dSChao Yu if (IS_ERR(page)) 28407735730dSChao Yu return PTR_ERR(page); 28417735730dSChao Yu 28429ecf4b80SChao Yu rn = F2FS_NODE(page); 2843393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2844393ff91fSJaegeuk Kim sum_entry->version = 0; 2845393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 28469af0ff1cSChao Yu sum_entry++; 28479ecf4b80SChao Yu f2fs_put_page(page, 1); 28489af0ff1cSChao Yu } 2849bac4eef6SChao Yu 28509ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2851bac4eef6SChao Yu addr + nrpages); 28529af0ff1cSChao Yu } 28537735730dSChao Yu return 0; 2854e05df3b1SJaegeuk Kim } 2855e05df3b1SJaegeuk Kim 2856aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2857e05df3b1SJaegeuk Kim { 2858e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2859e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2860b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2861e05df3b1SJaegeuk Kim int i; 2862e05df3b1SJaegeuk Kim 2863b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2864dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2865e05df3b1SJaegeuk Kim struct nat_entry *ne; 2866e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2867dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2868e05df3b1SJaegeuk Kim 2869b862676eSChao Yu if (f2fs_check_nid_range(sbi, nid)) 2870b862676eSChao Yu continue; 2871b862676eSChao Yu 2872dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 28739be32d72SJaegeuk Kim 2874e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2875e05df3b1SJaegeuk Kim if (!ne) { 287632410577SChao Yu ne = __alloc_nat_entry(sbi, nid, true); 287712f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 28789be32d72SJaegeuk Kim } 287904d47e67SChao Yu 288004d47e67SChao Yu /* 288104d47e67SChao Yu * if a free nat in journal has not been used after last 288204d47e67SChao Yu * checkpoint, we should remove it from available nids, 288304d47e67SChao Yu * since later we will add it again. 288404d47e67SChao Yu */ 288504d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 288604d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 288704d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 288804d47e67SChao Yu nm_i->available_nids--; 288904d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 289004d47e67SChao Yu } 289104d47e67SChao Yu 2892e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2893e05df3b1SJaegeuk Kim } 2894dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2895b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2896e05df3b1SJaegeuk Kim } 2897e05df3b1SJaegeuk Kim 2898309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2899309cc2b6SJaegeuk Kim struct list_head *head, int max) 2900e05df3b1SJaegeuk Kim { 2901309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2902e05df3b1SJaegeuk Kim 2903309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2904309cc2b6SJaegeuk Kim goto add_out; 2905e05df3b1SJaegeuk Kim 2906309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2907309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2908309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2909309cc2b6SJaegeuk Kim return; 2910309cc2b6SJaegeuk Kim } 2911309cc2b6SJaegeuk Kim } 2912309cc2b6SJaegeuk Kim add_out: 2913309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2914aec71382SChao Yu } 2915aec71382SChao Yu 291694c821fbSChao Yu static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs, 291794c821fbSChao Yu unsigned int valid) 291894c821fbSChao Yu { 291994c821fbSChao Yu if (valid == 0) { 292094c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->empty_nat_bits); 292194c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 292294c821fbSChao Yu return; 292394c821fbSChao Yu } 292494c821fbSChao Yu 292594c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->empty_nat_bits); 292694c821fbSChao Yu if (valid == NAT_ENTRY_PER_BLOCK) 292794c821fbSChao Yu __set_bit_le(nat_ofs, nm_i->full_nat_bits); 292894c821fbSChao Yu else 292994c821fbSChao Yu __clear_bit_le(nat_ofs, nm_i->full_nat_bits); 293094c821fbSChao Yu } 293194c821fbSChao Yu 293294c821fbSChao Yu static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 293322ad0b6aSJaegeuk Kim struct page *page) 293422ad0b6aSJaegeuk Kim { 293522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 293622ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 293722ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 293822ad0b6aSJaegeuk Kim int valid = 0; 293937a0ab2aSFan Li int i = 0; 294022ad0b6aSJaegeuk Kim 294194c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 294222ad0b6aSJaegeuk Kim return; 294322ad0b6aSJaegeuk Kim 294437a0ab2aSFan Li if (nat_index == 0) { 294537a0ab2aSFan Li valid = 1; 294637a0ab2aSFan Li i = 1; 294737a0ab2aSFan Li } 294837a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 294936af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 295022ad0b6aSJaegeuk Kim valid++; 295122ad0b6aSJaegeuk Kim } 295294c821fbSChao Yu 295394c821fbSChao Yu __update_nat_bits(nm_i, nat_index, valid); 295422ad0b6aSJaegeuk Kim } 295522ad0b6aSJaegeuk Kim 295694c821fbSChao Yu void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi) 295794c821fbSChao Yu { 295894c821fbSChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 295994c821fbSChao Yu unsigned int nat_ofs; 296094c821fbSChao Yu 2961e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 296294c821fbSChao Yu 296394c821fbSChao Yu for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) { 296494c821fbSChao Yu unsigned int valid = 0, nid_ofs = 0; 296594c821fbSChao Yu 296694c821fbSChao Yu /* handle nid zero due to it should never be used */ 296794c821fbSChao Yu if (unlikely(nat_ofs == 0)) { 296894c821fbSChao Yu valid = 1; 296994c821fbSChao Yu nid_ofs = 1; 297094c821fbSChao Yu } 297194c821fbSChao Yu 297294c821fbSChao Yu for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) { 297394c821fbSChao Yu if (!test_bit_le(nid_ofs, 297494c821fbSChao Yu nm_i->free_nid_bitmap[nat_ofs])) 297594c821fbSChao Yu valid++; 297694c821fbSChao Yu } 297794c821fbSChao Yu 297894c821fbSChao Yu __update_nat_bits(nm_i, nat_ofs, valid); 297994c821fbSChao Yu } 298094c821fbSChao Yu 2981e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 298222ad0b6aSJaegeuk Kim } 298322ad0b6aSJaegeuk Kim 2984edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 298522ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2986309cc2b6SJaegeuk Kim { 2987309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2988b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2989309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2990309cc2b6SJaegeuk Kim bool to_journal = true; 2991309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2992309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2993309cc2b6SJaegeuk Kim struct page *page = NULL; 2994aec71382SChao Yu 2995aec71382SChao Yu /* 2996aec71382SChao Yu * there are two steps to flush nat entries: 2997aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2998aec71382SChao Yu * #2, flush nat entries to nat page. 2999aec71382SChao Yu */ 300094c821fbSChao Yu if ((cpc->reason & CP_UMOUNT) || 300122ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 3002aec71382SChao Yu to_journal = false; 3003aec71382SChao Yu 3004aec71382SChao Yu if (to_journal) { 3005b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 3006aec71382SChao Yu } else { 3007e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 3008edc55aafSJaegeuk Kim if (IS_ERR(page)) 3009edc55aafSJaegeuk Kim return PTR_ERR(page); 3010edc55aafSJaegeuk Kim 3011e05df3b1SJaegeuk Kim nat_blk = page_address(page); 30129850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 3013e05df3b1SJaegeuk Kim } 3014e05df3b1SJaegeuk Kim 3015aec71382SChao Yu /* flush dirty nats in nat entry set */ 3016309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 3017aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 3018aec71382SChao Yu nid_t nid = nat_get_nid(ne); 3019aec71382SChao Yu int offset; 3020aec71382SChao Yu 3021febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 3022309cc2b6SJaegeuk Kim 3023aec71382SChao Yu if (to_journal) { 30244d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 3025aec71382SChao Yu NAT_JOURNAL, nid, 1); 30269850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 3027dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 3028dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 3029aec71382SChao Yu } else { 3030aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 3031aec71382SChao Yu } 3032aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 303388bd02c9SJaegeuk Kim nat_reset_flag(ne); 30340b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 303504d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 30365921aaa1SLiFan add_free_nid(sbi, nid, false, true); 30374ac91242SChao Yu } else { 30384ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 3039346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 304004d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 304104d47e67SChao Yu } 3042e05df3b1SJaegeuk Kim } 3043aec71382SChao Yu 304422ad0b6aSJaegeuk Kim if (to_journal) { 3045b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 304622ad0b6aSJaegeuk Kim } else { 304794c821fbSChao Yu update_nat_bits(sbi, start_nid, page); 3048e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 304922ad0b6aSJaegeuk Kim } 3050aec71382SChao Yu 305159c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 305259c9081bSYunlei He if (!set->entry_cnt) { 3053309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 3054309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 3055309cc2b6SJaegeuk Kim } 3056edc55aafSJaegeuk Kim return 0; 305759c9081bSYunlei He } 3058aec71382SChao Yu 3059309cc2b6SJaegeuk Kim /* 3060309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 3061309cc2b6SJaegeuk Kim */ 3062edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 3063309cc2b6SJaegeuk Kim { 3064309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3065309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 3066b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 30677aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3068309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 3069309cc2b6SJaegeuk Kim unsigned int found; 3070309cc2b6SJaegeuk Kim nid_t set_idx = 0; 3071309cc2b6SJaegeuk Kim LIST_HEAD(sets); 3072edc55aafSJaegeuk Kim int err = 0; 3073309cc2b6SJaegeuk Kim 3074a95ba66aSJaegeuk Kim /* 3075a95ba66aSJaegeuk Kim * during unmount, let's flush nat_bits before checking 3076a95ba66aSJaegeuk Kim * nat_cnt[DIRTY_NAT]. 3077a95ba66aSJaegeuk Kim */ 307894c821fbSChao Yu if (cpc->reason & CP_UMOUNT) { 3079e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 30807f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 3081e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 30827f2ecdd8SJaegeuk Kim } 30837f2ecdd8SJaegeuk Kim 3084a95ba66aSJaegeuk Kim if (!nm_i->nat_cnt[DIRTY_NAT]) 3085edc55aafSJaegeuk Kim return 0; 3086a5131193SJaegeuk Kim 3087e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3088a5131193SJaegeuk Kim 3089309cc2b6SJaegeuk Kim /* 3090309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 3091309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 3092309cc2b6SJaegeuk Kim * into nat entry set. 3093309cc2b6SJaegeuk Kim */ 309494c821fbSChao Yu if (cpc->reason & CP_UMOUNT || 3095a95ba66aSJaegeuk Kim !__has_cursum_space(journal, 3096a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL)) 3097309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 3098309cc2b6SJaegeuk Kim 3099309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 31007aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 3101309cc2b6SJaegeuk Kim unsigned idx; 31025f029c04SYi Zhuang 3103309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 3104309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 3105309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 3106dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 3107309cc2b6SJaegeuk Kim } 3108309cc2b6SJaegeuk Kim 3109309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 3110edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 3111edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 3112edc55aafSJaegeuk Kim if (err) 3113edc55aafSJaegeuk Kim break; 3114edc55aafSJaegeuk Kim } 3115309cc2b6SJaegeuk Kim 3116e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 311759c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 3118edc55aafSJaegeuk Kim 3119edc55aafSJaegeuk Kim return err; 3120e05df3b1SJaegeuk Kim } 3121e05df3b1SJaegeuk Kim 312222ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 312322ad0b6aSJaegeuk Kim { 312422ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 312522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 312622ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 312722ad0b6aSJaegeuk Kim unsigned int i; 312822ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 312922ad0b6aSJaegeuk Kim block_t nat_bits_addr; 313022ad0b6aSJaegeuk Kim 3131df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 31320b6d4ca0SEric Biggers nm_i->nat_bits = f2fs_kvzalloc(sbi, 3133acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 313422ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 313522ad0b6aSJaegeuk Kim return -ENOMEM; 313622ad0b6aSJaegeuk Kim 313794c821fbSChao Yu nm_i->full_nat_bits = nm_i->nat_bits + 8; 313894c821fbSChao Yu nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 313994c821fbSChao Yu 314094c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 314194c821fbSChao Yu return 0; 314294c821fbSChao Yu 314322ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 314422ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 314522ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 31467735730dSChao Yu struct page *page; 31477735730dSChao Yu 31487735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 31493b30eb19SChao Yu if (IS_ERR(page)) 31507735730dSChao Yu return PTR_ERR(page); 315122ad0b6aSJaegeuk Kim 315222ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 315322ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 315422ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 315522ad0b6aSJaegeuk Kim } 315622ad0b6aSJaegeuk Kim 3157ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 315822ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 315994c821fbSChao Yu clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG); 316094c821fbSChao Yu f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)", 316194c821fbSChao Yu cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits)); 316222ad0b6aSJaegeuk Kim return 0; 316322ad0b6aSJaegeuk Kim } 316422ad0b6aSJaegeuk Kim 3165dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 316622ad0b6aSJaegeuk Kim return 0; 316722ad0b6aSJaegeuk Kim } 316822ad0b6aSJaegeuk Kim 3169bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 31707041d5d2SChao Yu { 31717041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31727041d5d2SChao Yu unsigned int i = 0; 31737041d5d2SChao Yu nid_t nid, last_nid; 31747041d5d2SChao Yu 317594c821fbSChao Yu if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) 31767041d5d2SChao Yu return; 31777041d5d2SChao Yu 31787041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31797041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 31807041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31817041d5d2SChao Yu break; 31827041d5d2SChao Yu 31837041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31847041d5d2SChao Yu 31857041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 3186f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 31877041d5d2SChao Yu 3188346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 31897041d5d2SChao Yu for (; nid < last_nid; nid++) 3190346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 3191346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 31927041d5d2SChao Yu } 31937041d5d2SChao Yu 31947041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31957041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 31967041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31977041d5d2SChao Yu break; 31987041d5d2SChao Yu 31997041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 32007041d5d2SChao Yu } 32017041d5d2SChao Yu } 32027041d5d2SChao Yu 3203e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3204e05df3b1SJaegeuk Kim { 3205e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3206e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3207e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 320822ad0b6aSJaegeuk Kim unsigned int nat_segs; 320922ad0b6aSJaegeuk Kim int err; 3210e05df3b1SJaegeuk Kim 3211e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3212e05df3b1SJaegeuk Kim 3213e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3214e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 321522ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 321622ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 32177ee0eeabSJaegeuk Kim 3218b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 321904d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 322027cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 32219a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 32229a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3223cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3224ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 32252304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 322647c8ebccSJaegeuk Kim nm_i->max_rf_node_blocks = DEF_RF_NODE_BLOCKS; 3227e05df3b1SJaegeuk Kim 32288a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 32299a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3230769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3231769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3232e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 323322969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3234e05df3b1SJaegeuk Kim 3235e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3236b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3237e4544b63STim Murray init_f2fs_rwsem(&nm_i->nat_tree_lock); 3238e05df3b1SJaegeuk Kim 3239e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 324079b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3241e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 324279b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 324379b5793bSAlexandru Gheorghiu GFP_KERNEL); 324479b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 324579b5793bSAlexandru Gheorghiu return -ENOMEM; 3246599a09b2SChao Yu 324722ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 324822ad0b6aSJaegeuk Kim if (err) 324922ad0b6aSJaegeuk Kim return err; 325022ad0b6aSJaegeuk Kim 3251599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3252599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3253599a09b2SChao Yu GFP_KERNEL); 3254599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3255599a09b2SChao Yu return -ENOMEM; 3256599a09b2SChao Yu #endif 3257599a09b2SChao Yu 3258e05df3b1SJaegeuk Kim return 0; 3259e05df3b1SJaegeuk Kim } 3260e05df3b1SJaegeuk Kim 32619f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 32624ac91242SChao Yu { 32634ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3264bb1105e4SJaegeuk Kim int i; 32654ac91242SChao Yu 3266026f0507SKees Cook nm_i->free_nid_bitmap = 32670b6d4ca0SEric Biggers f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *), 3268026f0507SKees Cook nm_i->nat_blocks), 3269026f0507SKees Cook GFP_KERNEL); 32704ac91242SChao Yu if (!nm_i->free_nid_bitmap) 32714ac91242SChao Yu return -ENOMEM; 32724ac91242SChao Yu 3273bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3274bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3275e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 327668c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3277bb1105e4SJaegeuk Kim return -ENOMEM; 3278bb1105e4SJaegeuk Kim } 3279bb1105e4SJaegeuk Kim 3280628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 32814ac91242SChao Yu GFP_KERNEL); 32824ac91242SChao Yu if (!nm_i->nat_block_bitmap) 32834ac91242SChao Yu return -ENOMEM; 3284586d1492SChao Yu 32859d2a789cSKees Cook nm_i->free_nid_count = 32869d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 32879d2a789cSKees Cook nm_i->nat_blocks), 32889d2a789cSKees Cook GFP_KERNEL); 3289586d1492SChao Yu if (!nm_i->free_nid_count) 3290586d1492SChao Yu return -ENOMEM; 32914ac91242SChao Yu return 0; 32924ac91242SChao Yu } 32934ac91242SChao Yu 32944d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3295e05df3b1SJaegeuk Kim { 3296e05df3b1SJaegeuk Kim int err; 3297e05df3b1SJaegeuk Kim 3298acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3299acbf054dSChao Yu GFP_KERNEL); 3300e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3301e05df3b1SJaegeuk Kim return -ENOMEM; 3302e05df3b1SJaegeuk Kim 3303e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3304e05df3b1SJaegeuk Kim if (err) 3305e05df3b1SJaegeuk Kim return err; 3306e05df3b1SJaegeuk Kim 33074ac91242SChao Yu err = init_free_nid_cache(sbi); 33084ac91242SChao Yu if (err) 33094ac91242SChao Yu return err; 33104ac91242SChao Yu 33117041d5d2SChao Yu /* load free nid status from nat_bits table */ 33127041d5d2SChao Yu load_free_nid_bitmap(sbi); 33137041d5d2SChao Yu 3314e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3315e05df3b1SJaegeuk Kim } 3316e05df3b1SJaegeuk Kim 33174d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3318e05df3b1SJaegeuk Kim { 3319e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3320e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3321e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 33227aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3323e05df3b1SJaegeuk Kim nid_t nid = 0; 3324e05df3b1SJaegeuk Kim unsigned int found; 3325e05df3b1SJaegeuk Kim 3326e05df3b1SJaegeuk Kim if (!nm_i) 3327e05df3b1SJaegeuk Kim return; 3328e05df3b1SJaegeuk Kim 3329e05df3b1SJaegeuk Kim /* destroy free nid list */ 3330b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 33319a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3332a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3333b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3334cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3335b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3336e05df3b1SJaegeuk Kim } 33379a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 33389a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 33399a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3340b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3341e05df3b1SJaegeuk Kim 3342e05df3b1SJaegeuk Kim /* destroy nat cache */ 3343e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 3344e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3345e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3346e05df3b1SJaegeuk Kim unsigned idx; 33477aed0d45SJaegeuk Kim 3348b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 334922969158SChao Yu for (idx = 0; idx < found; idx++) { 335022969158SChao Yu spin_lock(&nm_i->nat_list_lock); 335122969158SChao Yu list_del(&natvec[idx]->list); 335222969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 335322969158SChao Yu 3354b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3355e05df3b1SJaegeuk Kim } 335622969158SChao Yu } 3357a95ba66aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]); 33587aed0d45SJaegeuk Kim 33597aed0d45SJaegeuk Kim /* destroy nat set cache */ 33607aed0d45SJaegeuk Kim nid = 0; 33617aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 33627aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 33637aed0d45SJaegeuk Kim unsigned idx; 33647aed0d45SJaegeuk Kim 33657aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 33667aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 33677aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 33687aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 33697aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 33707aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 33717aed0d45SJaegeuk Kim } 33727aed0d45SJaegeuk Kim } 3373e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 3374e05df3b1SJaegeuk Kim 33754ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3376bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3377bb1105e4SJaegeuk Kim int i; 3378bb1105e4SJaegeuk Kim 3379bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3380bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 33815222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3382bb1105e4SJaegeuk Kim } 3383586d1492SChao Yu kvfree(nm_i->free_nid_count); 33844ac91242SChao Yu 33855222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 33865222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3387599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 33885222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3389599a09b2SChao Yu #endif 3390e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3391c8eb7024SChao Yu kfree(nm_i); 3392e05df3b1SJaegeuk Kim } 3393e05df3b1SJaegeuk Kim 33944d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3395e05df3b1SJaegeuk Kim { 339698510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3397e8512d2eSGu Zheng sizeof(struct nat_entry)); 3398e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3399aec71382SChao Yu goto fail; 3400e05df3b1SJaegeuk Kim 340198510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3402e8512d2eSGu Zheng sizeof(struct free_nid)); 3403aec71382SChao Yu if (!free_nid_slab) 3404ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3405aec71382SChao Yu 340698510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3407aec71382SChao Yu sizeof(struct nat_entry_set)); 3408aec71382SChao Yu if (!nat_entry_set_slab) 3409ce3e6d25SMarkus Elfring goto destroy_free_nid; 341050fa53ecSChao Yu 341198510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 341250fa53ecSChao Yu sizeof(struct fsync_node_entry)); 341350fa53ecSChao Yu if (!fsync_node_entry_slab) 341450fa53ecSChao Yu goto destroy_nat_entry_set; 3415e05df3b1SJaegeuk Kim return 0; 3416aec71382SChao Yu 341750fa53ecSChao Yu destroy_nat_entry_set: 341850fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3419ce3e6d25SMarkus Elfring destroy_free_nid: 3420aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3421ce3e6d25SMarkus Elfring destroy_nat_entry: 3422aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3423aec71382SChao Yu fail: 3424aec71382SChao Yu return -ENOMEM; 3425e05df3b1SJaegeuk Kim } 3426e05df3b1SJaegeuk Kim 34274d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3428e05df3b1SJaegeuk Kim { 342950fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3430aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3431e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3432e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3433e05df3b1SJaegeuk Kim } 3434