17c1a000dSChao Yu // SPDX-License-Identifier: GPL-2.0 20a8165d7SJaegeuk Kim /* 3e05df3b1SJaegeuk Kim * fs/f2fs/node.c 4e05df3b1SJaegeuk Kim * 5e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6e05df3b1SJaegeuk Kim * http://www.samsung.com/ 7e05df3b1SJaegeuk Kim */ 8e05df3b1SJaegeuk Kim #include <linux/fs.h> 9e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 10e05df3b1SJaegeuk Kim #include <linux/mpage.h> 114034247aSNeilBrown #include <linux/sched/mm.h> 12e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 13e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 14e05df3b1SJaegeuk Kim #include <linux/swap.h> 15e05df3b1SJaegeuk Kim 16e05df3b1SJaegeuk Kim #include "f2fs.h" 17e05df3b1SJaegeuk Kim #include "node.h" 18e05df3b1SJaegeuk Kim #include "segment.h" 1987905682SYunlei He #include "xattr.h" 2052118743SDaeho Jeong #include "iostat.h" 2151dd6249SNamjae Jeon #include <trace/events/f2fs.h> 22e05df3b1SJaegeuk Kim 234d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 24f978f5a0SGu Zheng 25e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 26e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 27aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 2850fa53ecSChao Yu static struct kmem_cache *fsync_node_entry_slab; 29e05df3b1SJaegeuk Kim 30a4f843bdSJaegeuk Kim /* 31a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 32a4f843bdSJaegeuk Kim */ 334d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 34a4f843bdSJaegeuk Kim { 35a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 36a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 37dcbb4c10SJoe Perches f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.", 38a4f843bdSJaegeuk Kim __func__, nid); 3910f966bbSChao Yu return -EFSCORRUPTED; 40a4f843bdSJaegeuk Kim } 41a4f843bdSJaegeuk Kim return 0; 42a4f843bdSJaegeuk Kim } 43a4f843bdSJaegeuk Kim 444d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 45cdfc41c1SJaegeuk Kim { 466fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 47d6d2b491SSahitya Tummala struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 48cdfc41c1SJaegeuk Kim struct sysinfo val; 49e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 50cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 516fb03f3aSJaegeuk Kim bool res = false; 52cdfc41c1SJaegeuk Kim 53d6d2b491SSahitya Tummala if (!nm_i) 54d6d2b491SSahitya Tummala return true; 55d6d2b491SSahitya Tummala 56cdfc41c1SJaegeuk Kim si_meminfo(&val); 57e5e7ea3cSJaegeuk Kim 58e5e7ea3cSJaegeuk Kim /* only uses low memory */ 59e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 60e5e7ea3cSJaegeuk Kim 61429511cdSChao Yu /* 62429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 63429511cdSChao Yu */ 646fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 659a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 66b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 67e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 686fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 69a95ba66aSJaegeuk Kim mem_size = (nm_i->nat_cnt[TOTAL_NAT] * 70a95ba66aSJaegeuk Kim sizeof(struct nat_entry)) >> PAGE_SHIFT; 71e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 72e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 73e589c2c4SJaegeuk Kim res = false; 74a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 75a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 76a1257023SJaegeuk Kim return false; 77a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 78a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 79e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 80e5e7ea3cSJaegeuk Kim int i; 81e5e7ea3cSJaegeuk Kim 8239d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 838f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 848f73cbb7SKinglong Mee sizeof(struct ino_entry); 858f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 86e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 87429511cdSChao Yu } else if (type == EXTENT_CACHE) { 887441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 897441ccefSJaegeuk Kim sizeof(struct extent_tree) + 90429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 9109cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 92429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 93d6d2b491SSahitya Tummala } else if (type == DISCARD_CACHE) { 94d6d2b491SSahitya Tummala mem_size = (atomic_read(&dcc->discard_cmd_cnt) * 95d6d2b491SSahitya Tummala sizeof(struct discard_cmd)) >> PAGE_SHIFT; 96d6d2b491SSahitya Tummala res = mem_size < (avail_ram * nm_i->ram_thresh / 100); 976ce19affSChao Yu } else if (type == COMPRESS_PAGE) { 986ce19affSChao Yu #ifdef CONFIG_F2FS_FS_COMPRESSION 996ce19affSChao Yu unsigned long free_ram = val.freeram; 1006ce19affSChao Yu 1016ce19affSChao Yu /* 1026ce19affSChao Yu * free memory is lower than watermark or cached page count 1036ce19affSChao Yu * exceed threshold, deny caching compress page. 1046ce19affSChao Yu */ 1056ce19affSChao Yu res = (free_ram > avail_ram * sbi->compress_watermark / 100) && 1066ce19affSChao Yu (COMPRESS_MAPPING(sbi)->nrpages < 1076ce19affSChao Yu free_ram * sbi->compress_percent / 100); 1086ce19affSChao Yu #else 1096ce19affSChao Yu res = false; 1106ce19affSChao Yu #endif 1111e84371fSJaegeuk Kim } else { 1121663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 1131663cae4SJaegeuk Kim return true; 1146fb03f3aSJaegeuk Kim } 1156fb03f3aSJaegeuk Kim return res; 116cdfc41c1SJaegeuk Kim } 117cdfc41c1SJaegeuk Kim 118e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 119e05df3b1SJaegeuk Kim { 120e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1215ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 122e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 123aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 124e05df3b1SJaegeuk Kim } 125e05df3b1SJaegeuk Kim ClearPageUptodate(page); 126e05df3b1SJaegeuk Kim } 127e05df3b1SJaegeuk Kim 128e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 129e05df3b1SJaegeuk Kim { 1303acc4522SJaegeuk Kim return f2fs_get_meta_page_retry(sbi, current_nat_addr(sbi, nid)); 131e05df3b1SJaegeuk Kim } 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 134e05df3b1SJaegeuk Kim { 135e05df3b1SJaegeuk Kim struct page *src_page; 136e05df3b1SJaegeuk Kim struct page *dst_page; 137e05df3b1SJaegeuk Kim pgoff_t dst_off; 138e05df3b1SJaegeuk Kim void *src_addr; 139e05df3b1SJaegeuk Kim void *dst_addr; 140e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 141e05df3b1SJaegeuk Kim 14280551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 143e05df3b1SJaegeuk Kim 144e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 14580551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 146edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 147edc55aafSJaegeuk Kim return src_page; 1484d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1499850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 150e05df3b1SJaegeuk Kim 151e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 152e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 15309cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 154e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 155e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 156e05df3b1SJaegeuk Kim 157e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 158e05df3b1SJaegeuk Kim 159e05df3b1SJaegeuk Kim return dst_page; 160e05df3b1SJaegeuk Kim } 161e05df3b1SJaegeuk Kim 16232410577SChao Yu static struct nat_entry *__alloc_nat_entry(struct f2fs_sb_info *sbi, 16332410577SChao Yu nid_t nid, bool no_fail) 16412f9ef37SYunlei He { 16512f9ef37SYunlei He struct nat_entry *new; 16612f9ef37SYunlei He 16732410577SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, 16832410577SChao Yu GFP_F2FS_ZERO, no_fail, sbi); 16912f9ef37SYunlei He if (new) { 17012f9ef37SYunlei He nat_set_nid(new, nid); 17112f9ef37SYunlei He nat_reset_flag(new); 17212f9ef37SYunlei He } 17312f9ef37SYunlei He return new; 17412f9ef37SYunlei He } 17512f9ef37SYunlei He 17612f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 17712f9ef37SYunlei He { 17812f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 17912f9ef37SYunlei He } 18012f9ef37SYunlei He 18112f9ef37SYunlei He /* must be locked by nat_tree_lock */ 18212f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 18312f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 18412f9ef37SYunlei He { 18512f9ef37SYunlei He if (no_fail) 18612f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 18712f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 18812f9ef37SYunlei He return NULL; 18912f9ef37SYunlei He 19012f9ef37SYunlei He if (raw_ne) 19112f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 19222969158SChao Yu 19322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19412f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 19522969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 19622969158SChao Yu 197a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]++; 198a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 19912f9ef37SYunlei He return ne; 20012f9ef37SYunlei He } 20112f9ef37SYunlei He 202e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 203e05df3b1SJaegeuk Kim { 20422969158SChao Yu struct nat_entry *ne; 20522969158SChao Yu 20622969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 20722969158SChao Yu 20822969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 20922969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 21022969158SChao Yu spin_lock(&nm_i->nat_list_lock); 21122969158SChao Yu if (!list_empty(&ne->list)) 21222969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 21322969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 21422969158SChao Yu } 21522969158SChao Yu 21622969158SChao Yu return ne; 217e05df3b1SJaegeuk Kim } 218e05df3b1SJaegeuk Kim 219e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 220e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 221e05df3b1SJaegeuk Kim { 222e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 223e05df3b1SJaegeuk Kim } 224e05df3b1SJaegeuk Kim 225e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 226e05df3b1SJaegeuk Kim { 227e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 228a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]--; 229a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 23012f9ef37SYunlei He __free_nat_entry(e); 231e05df3b1SJaegeuk Kim } 232e05df3b1SJaegeuk Kim 233780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 234309cc2b6SJaegeuk Kim struct nat_entry *ne) 235309cc2b6SJaegeuk Kim { 236309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 237309cc2b6SJaegeuk Kim struct nat_entry_set *head; 238309cc2b6SJaegeuk Kim 239309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 240309cc2b6SJaegeuk Kim if (!head) { 24132410577SChao Yu head = f2fs_kmem_cache_alloc(nat_entry_set_slab, 24232410577SChao Yu GFP_NOFS, true, NULL); 243309cc2b6SJaegeuk Kim 244309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 245309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 246309cc2b6SJaegeuk Kim head->set = set; 247309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2489be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 249309cc2b6SJaegeuk Kim } 250780de47cSChao Yu return head; 251780de47cSChao Yu } 252780de47cSChao Yu 253780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 254780de47cSChao Yu struct nat_entry *ne) 255780de47cSChao Yu { 256780de47cSChao Yu struct nat_entry_set *head; 257780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 258780de47cSChao Yu 259780de47cSChao Yu if (!new_ne) 260780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 261780de47cSChao Yu 262780de47cSChao Yu /* 263780de47cSChao Yu * update entry_cnt in below condition: 264780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 265780de47cSChao Yu * 2. update old block address to new one; 266780de47cSChao Yu */ 267780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 268780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 269780de47cSChao Yu head->entry_cnt++; 270780de47cSChao Yu 271780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 272febeca6dSChao Yu 273febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 274febeca6dSChao Yu goto refresh_list; 275febeca6dSChao Yu 276a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]++; 277a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 278309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 279febeca6dSChao Yu refresh_list: 28022969158SChao Yu spin_lock(&nm_i->nat_list_lock); 281780de47cSChao Yu if (new_ne) 282febeca6dSChao Yu list_del_init(&ne->list); 283febeca6dSChao Yu else 284febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 28522969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 286309cc2b6SJaegeuk Kim } 287309cc2b6SJaegeuk Kim 288309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2890b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 290309cc2b6SJaegeuk Kim { 29122969158SChao Yu spin_lock(&nm_i->nat_list_lock); 292309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 29322969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 29422969158SChao Yu 295309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2960b28b71eSKinglong Mee set->entry_cnt--; 297a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]--; 298a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 299309cc2b6SJaegeuk Kim } 300309cc2b6SJaegeuk Kim 301309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 302309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 303309cc2b6SJaegeuk Kim { 304309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 305309cc2b6SJaegeuk Kim start, nr); 306309cc2b6SJaegeuk Kim } 307309cc2b6SJaegeuk Kim 30850fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 30950fa53ecSChao Yu { 31050fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 31150fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 31250fa53ecSChao Yu } 31350fa53ecSChao Yu 31450fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 31550fa53ecSChao Yu { 31650fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 31750fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 31850fa53ecSChao Yu sbi->fsync_seg_id = 0; 31950fa53ecSChao Yu sbi->fsync_node_num = 0; 32050fa53ecSChao Yu } 32150fa53ecSChao Yu 32250fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 32350fa53ecSChao Yu struct page *page) 32450fa53ecSChao Yu { 32550fa53ecSChao Yu struct fsync_node_entry *fn; 32650fa53ecSChao Yu unsigned long flags; 32750fa53ecSChao Yu unsigned int seq_id; 32850fa53ecSChao Yu 32932410577SChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, 33032410577SChao Yu GFP_NOFS, true, NULL); 33150fa53ecSChao Yu 33250fa53ecSChao Yu get_page(page); 33350fa53ecSChao Yu fn->page = page; 33450fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 33550fa53ecSChao Yu 33650fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 33750fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 33850fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 33950fa53ecSChao Yu seq_id = fn->seq_id; 34050fa53ecSChao Yu sbi->fsync_node_num++; 34150fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34250fa53ecSChao Yu 34350fa53ecSChao Yu return seq_id; 34450fa53ecSChao Yu } 34550fa53ecSChao Yu 34650fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 34750fa53ecSChao Yu { 34850fa53ecSChao Yu struct fsync_node_entry *fn; 34950fa53ecSChao Yu unsigned long flags; 35050fa53ecSChao Yu 35150fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 35250fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 35350fa53ecSChao Yu if (fn->page == page) { 35450fa53ecSChao Yu list_del(&fn->list); 35550fa53ecSChao Yu sbi->fsync_node_num--; 35650fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 35750fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 35850fa53ecSChao Yu put_page(page); 35950fa53ecSChao Yu return; 36050fa53ecSChao Yu } 36150fa53ecSChao Yu } 36250fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36350fa53ecSChao Yu f2fs_bug_on(sbi, 1); 36450fa53ecSChao Yu } 36550fa53ecSChao Yu 36650fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 36750fa53ecSChao Yu { 36850fa53ecSChao Yu unsigned long flags; 36950fa53ecSChao Yu 37050fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 37150fa53ecSChao Yu sbi->fsync_seg_id = 0; 37250fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 37350fa53ecSChao Yu } 37450fa53ecSChao Yu 3754d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3762dcf51abSJaegeuk Kim { 3772dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3782dcf51abSJaegeuk Kim struct nat_entry *e; 3792dcf51abSJaegeuk Kim bool need = false; 3802dcf51abSJaegeuk Kim 381e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 3822dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3832dcf51abSJaegeuk Kim if (e) { 3842dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3852dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3862dcf51abSJaegeuk Kim need = true; 3872dcf51abSJaegeuk Kim } 388e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 3892dcf51abSJaegeuk Kim return need; 3902dcf51abSJaegeuk Kim } 3912dcf51abSJaegeuk Kim 3924d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 393e05df3b1SJaegeuk Kim { 394e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 395e05df3b1SJaegeuk Kim struct nat_entry *e; 39688bd02c9SJaegeuk Kim bool is_cp = true; 397e05df3b1SJaegeuk Kim 398e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 399e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 4007ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 40188bd02c9SJaegeuk Kim is_cp = false; 402e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 403e05df3b1SJaegeuk Kim return is_cp; 404e05df3b1SJaegeuk Kim } 405e05df3b1SJaegeuk Kim 4064d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 407b6fe5873SJaegeuk Kim { 408b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 409b6fe5873SJaegeuk Kim struct nat_entry *e; 41088bd02c9SJaegeuk Kim bool need_update = true; 411b6fe5873SJaegeuk Kim 412e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 41388bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 41488bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 41588bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 41688bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 41788bd02c9SJaegeuk Kim need_update = false; 418e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 41988bd02c9SJaegeuk Kim return need_update; 420b6fe5873SJaegeuk Kim } 421b6fe5873SJaegeuk Kim 42212f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4231515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 424e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 425e05df3b1SJaegeuk Kim { 4261515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 42712f9ef37SYunlei He struct nat_entry *new, *e; 4289be32d72SJaegeuk Kim 4290df035c7SJaegeuk Kim /* Let's mitigate lock contention of nat_tree_lock during checkpoint */ 430e4544b63STim Murray if (f2fs_rwsem_is_locked(&sbi->cp_global_sem)) 4310df035c7SJaegeuk Kim return; 4320df035c7SJaegeuk Kim 43332410577SChao Yu new = __alloc_nat_entry(sbi, nid, false); 43412f9ef37SYunlei He if (!new) 43512f9ef37SYunlei He return; 43612f9ef37SYunlei He 437e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 438e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 43912f9ef37SYunlei He if (!e) 44012f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 44112f9ef37SYunlei He else 4420c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4430c0b471eSEric Biggers nat_get_blkaddr(e) != 4440c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4451515aef0SChao Yu nat_get_version(e) != ne->version); 446e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 44712f9ef37SYunlei He if (e != new) 44812f9ef37SYunlei He __free_nat_entry(new); 449e05df3b1SJaegeuk Kim } 450e05df3b1SJaegeuk Kim 451e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 452479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 453e05df3b1SJaegeuk Kim { 454e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 455e05df3b1SJaegeuk Kim struct nat_entry *e; 45632410577SChao Yu struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true); 4579be32d72SJaegeuk Kim 458e4544b63STim Murray f2fs_down_write(&nm_i->nat_tree_lock); 459e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 460e05df3b1SJaegeuk Kim if (!e) { 46112f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4625c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 464e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 465e05df3b1SJaegeuk Kim /* 466e05df3b1SJaegeuk Kim * when nid is reallocated, 467e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 468e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 469e05df3b1SJaegeuk Kim */ 4705c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4719850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 472e05df3b1SJaegeuk Kim } 47312f9ef37SYunlei He /* let's free early to reduce memory consumption */ 47412f9ef37SYunlei He if (e != new) 47512f9ef37SYunlei He __free_nat_entry(new); 476e05df3b1SJaegeuk Kim 477e05df3b1SJaegeuk Kim /* sanity check */ 4789850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4799850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 480e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 482e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 48393770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 484e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 485e05df3b1SJaegeuk Kim 486e1c42045Sarter97 /* increment version no as node is removed */ 487e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 488e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 4895f029c04SYi Zhuang 490e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 491e05df3b1SJaegeuk Kim } 492e05df3b1SJaegeuk Kim 493e05df3b1SJaegeuk Kim /* change address */ 494e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 49593770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 49688bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 497e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 498479f40c4SJaegeuk Kim 499479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 500d5b692b7SChao Yu if (ni->nid != ni->ino) 501479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 50288bd02c9SJaegeuk Kim if (e) { 50388bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 50488bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 50588bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 50688bd02c9SJaegeuk Kim } 507e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 508e05df3b1SJaegeuk Kim } 509e05df3b1SJaegeuk Kim 5104d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 511e05df3b1SJaegeuk Kim { 512e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 5131b38dc8eSJaegeuk Kim int nr = nr_shrink; 514e05df3b1SJaegeuk Kim 515e4544b63STim Murray if (!f2fs_down_write_trylock(&nm_i->nat_tree_lock)) 516b873b798SJaegeuk Kim return 0; 517e05df3b1SJaegeuk Kim 51822969158SChao Yu spin_lock(&nm_i->nat_list_lock); 51922969158SChao Yu while (nr_shrink) { 520e05df3b1SJaegeuk Kim struct nat_entry *ne; 52122969158SChao Yu 52222969158SChao Yu if (list_empty(&nm_i->nat_entries)) 52322969158SChao Yu break; 52422969158SChao Yu 525e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 526e05df3b1SJaegeuk Kim struct nat_entry, list); 52722969158SChao Yu list_del(&ne->list); 52822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 52922969158SChao Yu 530e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 531e05df3b1SJaegeuk Kim nr_shrink--; 53222969158SChao Yu 53322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 534e05df3b1SJaegeuk Kim } 53522969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53622969158SChao Yu 537e4544b63STim Murray f2fs_up_write(&nm_i->nat_tree_lock); 5381b38dc8eSJaegeuk Kim return nr - nr_shrink; 539e05df3b1SJaegeuk Kim } 540e05df3b1SJaegeuk Kim 5417735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 542a9419b63SJaegeuk Kim struct node_info *ni, bool checkpoint_context) 543e05df3b1SJaegeuk Kim { 544e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 545e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 546b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 547e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 548e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 549e05df3b1SJaegeuk Kim struct page *page = NULL; 550e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 551e05df3b1SJaegeuk Kim struct nat_entry *e; 55266a82d1fSYunlei He pgoff_t index; 55393770ab7SChao Yu block_t blkaddr; 554e05df3b1SJaegeuk Kim int i; 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim ni->nid = nid; 5572eeb0dceSJaegeuk Kim retry: 558e05df3b1SJaegeuk Kim /* Check nat cache */ 559e4544b63STim Murray f2fs_down_read(&nm_i->nat_tree_lock); 560e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 561e05df3b1SJaegeuk Kim if (e) { 562e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 563e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 564e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 565e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5667735730dSChao Yu return 0; 5671515aef0SChao Yu } 568e05df3b1SJaegeuk Kim 5692eeb0dceSJaegeuk Kim /* 5702eeb0dceSJaegeuk Kim * Check current segment summary by trying to grab journal_rwsem first. 5712eeb0dceSJaegeuk Kim * This sem is on the critical path on the checkpoint requiring the above 5722eeb0dceSJaegeuk Kim * nat_tree_lock. Therefore, we should retry, if we failed to grab here 5732eeb0dceSJaegeuk Kim * while not bothering checkpoint. 5742eeb0dceSJaegeuk Kim */ 575e4544b63STim Murray if (!f2fs_rwsem_is_locked(&sbi->cp_global_sem) || checkpoint_context) { 576b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 577e4544b63STim Murray } else if (f2fs_rwsem_is_contended(&nm_i->nat_tree_lock) || 578a9419b63SJaegeuk Kim !down_read_trylock(&curseg->journal_rwsem)) { 579e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 5802eeb0dceSJaegeuk Kim goto retry; 5812eeb0dceSJaegeuk Kim } 5822eeb0dceSJaegeuk Kim 5834d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 584e05df3b1SJaegeuk Kim if (i >= 0) { 585dfc08a12SChao Yu ne = nat_in_journal(journal, i); 586e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 587e05df3b1SJaegeuk Kim } 588b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 58966a82d1fSYunlei He if (i >= 0) { 590e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 591e05df3b1SJaegeuk Kim goto cache; 59266a82d1fSYunlei He } 593e05df3b1SJaegeuk Kim 594e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 59566a82d1fSYunlei He index = current_nat_addr(sbi, nid); 596e4544b63STim Murray f2fs_up_read(&nm_i->nat_tree_lock); 59766a82d1fSYunlei He 5984d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5997735730dSChao Yu if (IS_ERR(page)) 6007735730dSChao Yu return PTR_ERR(page); 6017735730dSChao Yu 602e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 603e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 604e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 605e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 606e05df3b1SJaegeuk Kim cache: 60793770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 60893770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 60993770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 61093770ab7SChao Yu return -EFAULT; 61193770ab7SChao Yu 612e05df3b1SJaegeuk Kim /* cache nat entry */ 6131515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 6147735730dSChao Yu return 0; 615e05df3b1SJaegeuk Kim } 616e05df3b1SJaegeuk Kim 61779344efbSJaegeuk Kim /* 61879344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 61979344efbSJaegeuk Kim */ 6204d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 62179344efbSJaegeuk Kim { 62279344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 62379344efbSJaegeuk Kim struct blk_plug plug; 62479344efbSJaegeuk Kim int i, end; 62579344efbSJaegeuk Kim nid_t nid; 62679344efbSJaegeuk Kim 62779344efbSJaegeuk Kim blk_start_plug(&plug); 62879344efbSJaegeuk Kim 62979344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 63079344efbSJaegeuk Kim end = start + n; 63179344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 63279344efbSJaegeuk Kim for (i = start; i < end; i++) { 63379344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6344d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 63579344efbSJaegeuk Kim } 63679344efbSJaegeuk Kim 63779344efbSJaegeuk Kim blk_finish_plug(&plug); 63879344efbSJaegeuk Kim } 63979344efbSJaegeuk Kim 6404d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6413cf45747SChao Yu { 6423cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 643d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 644d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 645d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6463cf45747SChao Yu int cur_level = dn->cur_level; 6473cf45747SChao Yu int max_level = dn->max_level; 6483cf45747SChao Yu pgoff_t base = 0; 6493cf45747SChao Yu 6503cf45747SChao Yu if (!dn->max_level) 6513cf45747SChao Yu return pgofs + 1; 6523cf45747SChao Yu 6533cf45747SChao Yu while (max_level-- > cur_level) 6543cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6553cf45747SChao Yu 6563cf45747SChao Yu switch (dn->max_level) { 6573cf45747SChao Yu case 3: 6583cf45747SChao Yu base += 2 * indirect_blks; 659df561f66SGustavo A. R. Silva fallthrough; 6603cf45747SChao Yu case 2: 6613cf45747SChao Yu base += 2 * direct_blks; 662df561f66SGustavo A. R. Silva fallthrough; 6633cf45747SChao Yu case 1: 6643cf45747SChao Yu base += direct_index; 6653cf45747SChao Yu break; 6663cf45747SChao Yu default: 6673cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6683cf45747SChao Yu } 6693cf45747SChao Yu 6703cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6713cf45747SChao Yu } 6723cf45747SChao Yu 6730a8165d7SJaegeuk Kim /* 674e05df3b1SJaegeuk Kim * The maximum depth is four. 675e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 676e05df3b1SJaegeuk Kim */ 67781ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 678de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 679e05df3b1SJaegeuk Kim { 68081ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 681d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 682e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 683d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 684e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 685e05df3b1SJaegeuk Kim int n = 0; 686e05df3b1SJaegeuk Kim int level = 0; 687e05df3b1SJaegeuk Kim 688e05df3b1SJaegeuk Kim noffset[0] = 0; 689e05df3b1SJaegeuk Kim 690e05df3b1SJaegeuk Kim if (block < direct_index) { 69125c0a6e5SNamjae Jeon offset[n] = block; 692e05df3b1SJaegeuk Kim goto got; 693e05df3b1SJaegeuk Kim } 694e05df3b1SJaegeuk Kim block -= direct_index; 695e05df3b1SJaegeuk Kim if (block < direct_blks) { 696e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 697e05df3b1SJaegeuk Kim noffset[n] = 1; 69825c0a6e5SNamjae Jeon offset[n] = block; 699e05df3b1SJaegeuk Kim level = 1; 700e05df3b1SJaegeuk Kim goto got; 701e05df3b1SJaegeuk Kim } 702e05df3b1SJaegeuk Kim block -= direct_blks; 703e05df3b1SJaegeuk Kim if (block < direct_blks) { 704e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 705e05df3b1SJaegeuk Kim noffset[n] = 2; 70625c0a6e5SNamjae Jeon offset[n] = block; 707e05df3b1SJaegeuk Kim level = 1; 708e05df3b1SJaegeuk Kim goto got; 709e05df3b1SJaegeuk Kim } 710e05df3b1SJaegeuk Kim block -= direct_blks; 711e05df3b1SJaegeuk Kim if (block < indirect_blks) { 712e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 713e05df3b1SJaegeuk Kim noffset[n] = 3; 714e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 715e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 71625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 717e05df3b1SJaegeuk Kim level = 2; 718e05df3b1SJaegeuk Kim goto got; 719e05df3b1SJaegeuk Kim } 720e05df3b1SJaegeuk Kim block -= indirect_blks; 721e05df3b1SJaegeuk Kim if (block < indirect_blks) { 722e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 723e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 724e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 725e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 72625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 727e05df3b1SJaegeuk Kim level = 2; 728e05df3b1SJaegeuk Kim goto got; 729e05df3b1SJaegeuk Kim } 730e05df3b1SJaegeuk Kim block -= indirect_blks; 731e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 732e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 733e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 734e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 735e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 736e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 737e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 738e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 739e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 740e05df3b1SJaegeuk Kim offset[n - 1]; 74125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 742e05df3b1SJaegeuk Kim level = 3; 743e05df3b1SJaegeuk Kim goto got; 744e05df3b1SJaegeuk Kim } else { 745adb6dc19SJaegeuk Kim return -E2BIG; 746e05df3b1SJaegeuk Kim } 747e05df3b1SJaegeuk Kim got: 748e05df3b1SJaegeuk Kim return level; 749e05df3b1SJaegeuk Kim } 750e05df3b1SJaegeuk Kim 751e05df3b1SJaegeuk Kim /* 752e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7534f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7547a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 755e05df3b1SJaegeuk Kim */ 7564d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 757e05df3b1SJaegeuk Kim { 7584081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 759e05df3b1SJaegeuk Kim struct page *npage[4]; 760f1a3b98eSJaegeuk Kim struct page *parent = NULL; 761e05df3b1SJaegeuk Kim int offset[4]; 762e05df3b1SJaegeuk Kim unsigned int noffset[4]; 763e05df3b1SJaegeuk Kim nid_t nids[4]; 7643cf45747SChao Yu int level, i = 0; 765e05df3b1SJaegeuk Kim int err = 0; 766e05df3b1SJaegeuk Kim 76781ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 768adb6dc19SJaegeuk Kim if (level < 0) 769adb6dc19SJaegeuk Kim return level; 770e05df3b1SJaegeuk Kim 771e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7721646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7731646cfacSJaegeuk Kim 7741646cfacSJaegeuk Kim if (!npage[0]) { 7754d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 776e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 777e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7781646cfacSJaegeuk Kim } 779f1a3b98eSJaegeuk Kim 780f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 781f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 78276629165SJaegeuk Kim err = -ENOENT; 783f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 784f1a3b98eSJaegeuk Kim goto release_out; 785f1a3b98eSJaegeuk Kim } 786f1a3b98eSJaegeuk Kim 787e05df3b1SJaegeuk Kim parent = npage[0]; 78852c2db3fSChangman Lee if (level != 0) 789e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 790e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 791e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 792e05df3b1SJaegeuk Kim 793e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 794e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 795e05df3b1SJaegeuk Kim bool done = false; 796e05df3b1SJaegeuk Kim 797266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 798e05df3b1SJaegeuk Kim /* alloc new node */ 7994d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 800e05df3b1SJaegeuk Kim err = -ENOSPC; 801e05df3b1SJaegeuk Kim goto release_pages; 802e05df3b1SJaegeuk Kim } 803e05df3b1SJaegeuk Kim 804e05df3b1SJaegeuk Kim dn->nid = nids[i]; 8054d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 806e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 8074d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 808e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 809e05df3b1SJaegeuk Kim goto release_pages; 810e05df3b1SJaegeuk Kim } 811e05df3b1SJaegeuk Kim 812e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 8134d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 814e05df3b1SJaegeuk Kim done = true; 815266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 8164d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 817e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 818e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 819e05df3b1SJaegeuk Kim goto release_pages; 820e05df3b1SJaegeuk Kim } 821e05df3b1SJaegeuk Kim done = true; 822e05df3b1SJaegeuk Kim } 823e05df3b1SJaegeuk Kim if (i == 1) { 824e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 825e05df3b1SJaegeuk Kim unlock_page(parent); 826e05df3b1SJaegeuk Kim } else { 827e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 828e05df3b1SJaegeuk Kim } 829e05df3b1SJaegeuk Kim 830e05df3b1SJaegeuk Kim if (!done) { 8314d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 832e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 833e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 834e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 835e05df3b1SJaegeuk Kim goto release_out; 836e05df3b1SJaegeuk Kim } 837e05df3b1SJaegeuk Kim } 838e05df3b1SJaegeuk Kim if (i < level) { 839e05df3b1SJaegeuk Kim parent = npage[i]; 840e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 841e05df3b1SJaegeuk Kim } 842e05df3b1SJaegeuk Kim } 843e05df3b1SJaegeuk Kim dn->nid = nids[level]; 844e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 845e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 846a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 84794afd6d6SChao Yu 84894afd6d6SChao Yu if (is_inode_flag_set(dn->inode, FI_COMPRESSED_FILE) && 84994afd6d6SChao Yu f2fs_sb_has_readonly(sbi)) { 85094afd6d6SChao Yu unsigned int c_len = f2fs_cluster_blocks_are_contiguous(dn); 85194afd6d6SChao Yu block_t blkaddr; 85294afd6d6SChao Yu 85394afd6d6SChao Yu if (!c_len) 85494afd6d6SChao Yu goto out; 85594afd6d6SChao Yu 85694afd6d6SChao Yu blkaddr = f2fs_data_blkaddr(dn); 85794afd6d6SChao Yu if (blkaddr == COMPRESS_ADDR) 85894afd6d6SChao Yu blkaddr = data_blkaddr(dn->inode, dn->node_page, 85994afd6d6SChao Yu dn->ofs_in_node + 1); 86094afd6d6SChao Yu 86194afd6d6SChao Yu f2fs_update_extent_tree_range_compressed(dn->inode, 86294afd6d6SChao Yu index, blkaddr, 86394afd6d6SChao Yu F2FS_I(dn->inode)->i_cluster_size, 86494afd6d6SChao Yu c_len); 86594afd6d6SChao Yu } 86694afd6d6SChao Yu out: 867e05df3b1SJaegeuk Kim return 0; 868e05df3b1SJaegeuk Kim 869e05df3b1SJaegeuk Kim release_pages: 870e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 871e05df3b1SJaegeuk Kim if (i > 1) 872e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 873e05df3b1SJaegeuk Kim release_out: 874e05df3b1SJaegeuk Kim dn->inode_page = NULL; 875e05df3b1SJaegeuk Kim dn->node_page = NULL; 8763cf45747SChao Yu if (err == -ENOENT) { 8773cf45747SChao Yu dn->cur_level = i; 8783cf45747SChao Yu dn->max_level = level; 8790a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8803cf45747SChao Yu } 881e05df3b1SJaegeuk Kim return err; 882e05df3b1SJaegeuk Kim } 883e05df3b1SJaegeuk Kim 8847735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 885e05df3b1SJaegeuk Kim { 8864081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 887e05df3b1SJaegeuk Kim struct node_info ni; 8887735730dSChao Yu int err; 8890ea295ddSPan Bian pgoff_t index; 890e05df3b1SJaegeuk Kim 891a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &ni, false); 8927735730dSChao Yu if (err) 8937735730dSChao Yu return err; 894e05df3b1SJaegeuk Kim 895e05df3b1SJaegeuk Kim /* Deallocate node address */ 8964d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 897000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 898479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 899e05df3b1SJaegeuk Kim 900e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 9014d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 902e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 9030f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 904e05df3b1SJaegeuk Kim } 905000519f2SChao Yu 906e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 907caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 908e05df3b1SJaegeuk Kim 9090ea295ddSPan Bian index = dn->node_page->index; 910e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 911bf39c00aSJaegeuk Kim 912bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 9130ea295ddSPan Bian index, index); 914bf39c00aSJaegeuk Kim 915e05df3b1SJaegeuk Kim dn->node_page = NULL; 91651dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 9177735730dSChao Yu 9187735730dSChao Yu return 0; 919e05df3b1SJaegeuk Kim } 920e05df3b1SJaegeuk Kim 921e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 922e05df3b1SJaegeuk Kim { 923e05df3b1SJaegeuk Kim struct page *page; 9247735730dSChao Yu int err; 925e05df3b1SJaegeuk Kim 926e05df3b1SJaegeuk Kim if (dn->nid == 0) 927e05df3b1SJaegeuk Kim return 1; 928e05df3b1SJaegeuk Kim 929e05df3b1SJaegeuk Kim /* get direct node */ 9304d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 93145586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 932e05df3b1SJaegeuk Kim return 1; 933e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 934e05df3b1SJaegeuk Kim return PTR_ERR(page); 935e05df3b1SJaegeuk Kim 936e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 937e05df3b1SJaegeuk Kim dn->node_page = page; 938e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 9394d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 9407735730dSChao Yu err = truncate_node(dn); 9417735730dSChao Yu if (err) 9427735730dSChao Yu return err; 9437735730dSChao Yu 944e05df3b1SJaegeuk Kim return 1; 945e05df3b1SJaegeuk Kim } 946e05df3b1SJaegeuk Kim 947e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 948e05df3b1SJaegeuk Kim int ofs, int depth) 949e05df3b1SJaegeuk Kim { 950e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 951e05df3b1SJaegeuk Kim struct page *page; 952e05df3b1SJaegeuk Kim struct f2fs_node *rn; 953e05df3b1SJaegeuk Kim nid_t child_nid; 954e05df3b1SJaegeuk Kim unsigned int child_nofs; 955e05df3b1SJaegeuk Kim int freed = 0; 956e05df3b1SJaegeuk Kim int i, ret; 957e05df3b1SJaegeuk Kim 958e05df3b1SJaegeuk Kim if (dn->nid == 0) 959e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 960e05df3b1SJaegeuk Kim 96151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 96251dd6249SNamjae Jeon 9634d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 96451dd6249SNamjae Jeon if (IS_ERR(page)) { 96551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 966e05df3b1SJaegeuk Kim return PTR_ERR(page); 96751dd6249SNamjae Jeon } 968e05df3b1SJaegeuk Kim 9694d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 97079344efbSJaegeuk Kim 97145590710SGu Zheng rn = F2FS_NODE(page); 972e05df3b1SJaegeuk Kim if (depth < 3) { 973e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 974e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 975e05df3b1SJaegeuk Kim if (child_nid == 0) 976e05df3b1SJaegeuk Kim continue; 977e05df3b1SJaegeuk Kim rdn.nid = child_nid; 978e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 979e05df3b1SJaegeuk Kim if (ret < 0) 980e05df3b1SJaegeuk Kim goto out_err; 98112719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 98293bae099SJaegeuk Kim dn->node_changed = true; 983e05df3b1SJaegeuk Kim } 984e05df3b1SJaegeuk Kim } else { 985e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 986e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 987e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 988e05df3b1SJaegeuk Kim if (child_nid == 0) { 989e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 990e05df3b1SJaegeuk Kim continue; 991e05df3b1SJaegeuk Kim } 992e05df3b1SJaegeuk Kim rdn.nid = child_nid; 993e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 994e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 99512719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 99693bae099SJaegeuk Kim dn->node_changed = true; 997e05df3b1SJaegeuk Kim child_nofs += ret; 998e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 999e05df3b1SJaegeuk Kim goto out_err; 1000e05df3b1SJaegeuk Kim } 1001e05df3b1SJaegeuk Kim } 1002e05df3b1SJaegeuk Kim freed = child_nofs; 1003e05df3b1SJaegeuk Kim } 1004e05df3b1SJaegeuk Kim 1005e05df3b1SJaegeuk Kim if (!ofs) { 1006e05df3b1SJaegeuk Kim /* remove current indirect node */ 1007e05df3b1SJaegeuk Kim dn->node_page = page; 10087735730dSChao Yu ret = truncate_node(dn); 10097735730dSChao Yu if (ret) 10107735730dSChao Yu goto out_err; 1011e05df3b1SJaegeuk Kim freed++; 1012e05df3b1SJaegeuk Kim } else { 1013e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1014e05df3b1SJaegeuk Kim } 101551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 1016e05df3b1SJaegeuk Kim return freed; 1017e05df3b1SJaegeuk Kim 1018e05df3b1SJaegeuk Kim out_err: 1019e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 102051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 1021e05df3b1SJaegeuk Kim return ret; 1022e05df3b1SJaegeuk Kim } 1023e05df3b1SJaegeuk Kim 1024e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 1025e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 1026e05df3b1SJaegeuk Kim { 1027e05df3b1SJaegeuk Kim struct page *pages[2]; 1028e05df3b1SJaegeuk Kim nid_t nid[3]; 1029e05df3b1SJaegeuk Kim nid_t child_nid; 1030e05df3b1SJaegeuk Kim int err = 0; 1031e05df3b1SJaegeuk Kim int i; 1032e05df3b1SJaegeuk Kim int idx = depth - 2; 1033e05df3b1SJaegeuk Kim 1034e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1035e05df3b1SJaegeuk Kim if (!nid[0]) 1036e05df3b1SJaegeuk Kim return 0; 1037e05df3b1SJaegeuk Kim 1038e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1039a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1040e1c42045Sarter97 /* reference count'll be increased */ 10414d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1042e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1043e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1044a225dca3Sshifei10.ge idx = i - 1; 1045e05df3b1SJaegeuk Kim goto fail; 1046e05df3b1SJaegeuk Kim } 1047e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1048e05df3b1SJaegeuk Kim } 1049e05df3b1SJaegeuk Kim 10504d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 105179344efbSJaegeuk Kim 1052e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1053a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1054e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1055e05df3b1SJaegeuk Kim if (!child_nid) 1056e05df3b1SJaegeuk Kim continue; 1057e05df3b1SJaegeuk Kim dn->nid = child_nid; 1058e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1059e05df3b1SJaegeuk Kim if (err < 0) 1060e05df3b1SJaegeuk Kim goto fail; 106112719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 106293bae099SJaegeuk Kim dn->node_changed = true; 1063e05df3b1SJaegeuk Kim } 1064e05df3b1SJaegeuk Kim 1065a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1066e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1067e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10687735730dSChao Yu err = truncate_node(dn); 10697735730dSChao Yu if (err) 10707735730dSChao Yu goto fail; 1071e05df3b1SJaegeuk Kim } else { 1072e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1073e05df3b1SJaegeuk Kim } 1074e05df3b1SJaegeuk Kim offset[idx]++; 1075a225dca3Sshifei10.ge offset[idx + 1] = 0; 1076a225dca3Sshifei10.ge idx--; 1077e05df3b1SJaegeuk Kim fail: 1078a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1079e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 108051dd6249SNamjae Jeon 108151dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 108251dd6249SNamjae Jeon 1083e05df3b1SJaegeuk Kim return err; 1084e05df3b1SJaegeuk Kim } 1085e05df3b1SJaegeuk Kim 10860a8165d7SJaegeuk Kim /* 1087e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1088e05df3b1SJaegeuk Kim */ 10894d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1090e05df3b1SJaegeuk Kim { 10914081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1092e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1093e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10947dd690c8SJaegeuk Kim unsigned int nofs = 0; 109558bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1096e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1097e05df3b1SJaegeuk Kim struct page *page; 1098e05df3b1SJaegeuk Kim 109951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 110051dd6249SNamjae Jeon 110181ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 11029039d835SYubo Feng if (level < 0) { 11039039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1104adb6dc19SJaegeuk Kim return level; 11059039d835SYubo Feng } 1106ff373558SJaegeuk Kim 11074d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 110851dd6249SNamjae Jeon if (IS_ERR(page)) { 110951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1110e05df3b1SJaegeuk Kim return PTR_ERR(page); 111151dd6249SNamjae Jeon } 1112e05df3b1SJaegeuk Kim 1113e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1114e05df3b1SJaegeuk Kim unlock_page(page); 1115e05df3b1SJaegeuk Kim 111658bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1117e05df3b1SJaegeuk Kim switch (level) { 1118e05df3b1SJaegeuk Kim case 0: 1119e05df3b1SJaegeuk Kim case 1: 1120e05df3b1SJaegeuk Kim nofs = noffset[1]; 1121e05df3b1SJaegeuk Kim break; 1122e05df3b1SJaegeuk Kim case 2: 1123e05df3b1SJaegeuk Kim nofs = noffset[1]; 1124e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1125e05df3b1SJaegeuk Kim goto skip_partial; 112658bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1127e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1128e05df3b1SJaegeuk Kim goto fail; 1129e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1130e05df3b1SJaegeuk Kim break; 1131e05df3b1SJaegeuk Kim case 3: 1132e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1133e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1134e05df3b1SJaegeuk Kim goto skip_partial; 113558bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1136e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1137e05df3b1SJaegeuk Kim goto fail; 1138e05df3b1SJaegeuk Kim break; 1139e05df3b1SJaegeuk Kim default: 1140e05df3b1SJaegeuk Kim BUG(); 1141e05df3b1SJaegeuk Kim } 1142e05df3b1SJaegeuk Kim 1143e05df3b1SJaegeuk Kim skip_partial: 1144e05df3b1SJaegeuk Kim while (cont) { 114558bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1146e05df3b1SJaegeuk Kim switch (offset[0]) { 1147e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1148e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1149e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1150e05df3b1SJaegeuk Kim break; 1151e05df3b1SJaegeuk Kim 1152e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1153e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1154e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1155e05df3b1SJaegeuk Kim break; 1156e05df3b1SJaegeuk Kim 1157e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1158e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1159e05df3b1SJaegeuk Kim cont = 0; 1160e05df3b1SJaegeuk Kim break; 1161e05df3b1SJaegeuk Kim 1162e05df3b1SJaegeuk Kim default: 1163e05df3b1SJaegeuk Kim BUG(); 1164e05df3b1SJaegeuk Kim } 1165e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1166e05df3b1SJaegeuk Kim goto fail; 1167e05df3b1SJaegeuk Kim if (offset[1] == 0 && 116858bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1169e05df3b1SJaegeuk Kim lock_page(page); 1170ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1171bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 117258bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1173e05df3b1SJaegeuk Kim set_page_dirty(page); 1174e05df3b1SJaegeuk Kim unlock_page(page); 1175e05df3b1SJaegeuk Kim } 1176e05df3b1SJaegeuk Kim offset[1] = 0; 1177e05df3b1SJaegeuk Kim offset[0]++; 1178e05df3b1SJaegeuk Kim nofs += err; 1179e05df3b1SJaegeuk Kim } 1180e05df3b1SJaegeuk Kim fail: 1181e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 118251dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1183e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1184e05df3b1SJaegeuk Kim } 1185e05df3b1SJaegeuk Kim 11869c77f754SJaegeuk Kim /* caller must lock inode page */ 11874d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11884f16fb0fSJaegeuk Kim { 11894081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11904f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11914f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11924f16fb0fSJaegeuk Kim struct page *npage; 11937735730dSChao Yu int err; 11944f16fb0fSJaegeuk Kim 11954f16fb0fSJaegeuk Kim if (!nid) 11964f16fb0fSJaegeuk Kim return 0; 11974f16fb0fSJaegeuk Kim 11984d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11994f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 12004f16fb0fSJaegeuk Kim return PTR_ERR(npage); 12014f16fb0fSJaegeuk Kim 12027735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 12037735730dSChao Yu err = truncate_node(&dn); 12047735730dSChao Yu if (err) { 12057735730dSChao Yu f2fs_put_page(npage, 1); 12067735730dSChao Yu return err; 12077735730dSChao Yu } 12087735730dSChao Yu 1209205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 121065985d93SJaegeuk Kim 12114f16fb0fSJaegeuk Kim return 0; 12124f16fb0fSJaegeuk Kim } 12134f16fb0fSJaegeuk Kim 121439936837SJaegeuk Kim /* 12154f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 12164f4124d0SChao Yu * f2fs_unlock_op(). 121739936837SJaegeuk Kim */ 12184d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1219e05df3b1SJaegeuk Kim { 1220e05df3b1SJaegeuk Kim struct dnode_of_data dn; 122113ec7297SChao Yu int err; 1222e05df3b1SJaegeuk Kim 1223c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 12244d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 122513ec7297SChao Yu if (err) 122613ec7297SChao Yu return err; 1227e05df3b1SJaegeuk Kim 12284d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 122913ec7297SChao Yu if (err) { 1230c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 123113ec7297SChao Yu return err; 1232e05df3b1SJaegeuk Kim } 1233c2e69583SJaegeuk Kim 1234c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1235c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1236c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12374d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1238c2e69583SJaegeuk Kim 1239e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12408d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12418d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12428d714f8aSJaegeuk Kim return -EIO; 12438d714f8aSJaegeuk Kim } 12448b6810f8SChao Yu 12458b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1246097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1247097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1248dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12498b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12508b6810f8SChao Yu } 1251c2e69583SJaegeuk Kim 1252c2e69583SJaegeuk Kim /* will put inode & node pages */ 12537735730dSChao Yu err = truncate_node(&dn); 12547735730dSChao Yu if (err) { 12557735730dSChao Yu f2fs_put_dnode(&dn); 12567735730dSChao Yu return err; 12577735730dSChao Yu } 125813ec7297SChao Yu return 0; 1259e05df3b1SJaegeuk Kim } 1260e05df3b1SJaegeuk Kim 12614d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1262e05df3b1SJaegeuk Kim { 1263e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1264e05df3b1SJaegeuk Kim 1265e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1266e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 126744a83ff6SJaegeuk Kim 126844a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12694d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1270e05df3b1SJaegeuk Kim } 1271e05df3b1SJaegeuk Kim 12724d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1273e05df3b1SJaegeuk Kim { 12744081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 127525cc5d3bSJaegeuk Kim struct node_info new_ni; 1276e05df3b1SJaegeuk Kim struct page *page; 1277e05df3b1SJaegeuk Kim int err; 1278e05df3b1SJaegeuk Kim 127991942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1280e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1281e05df3b1SJaegeuk Kim 1282300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1283e05df3b1SJaegeuk Kim if (!page) 1284e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1285e05df3b1SJaegeuk Kim 12860abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12879c02740cSJaegeuk Kim goto fail; 12880abd675eSChao Yu 128925cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 1290a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false); 12917735730dSChao Yu if (err) { 12927735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12937735730dSChao Yu goto fail; 12947735730dSChao Yu } 129525cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 129625cc5d3bSJaegeuk Kim #endif 129725cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1298e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 129925cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 130025cc5d3bSJaegeuk Kim new_ni.flag = 0; 130125cc5d3bSJaegeuk Kim new_ni.version = 0; 1302479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 13039c02740cSJaegeuk Kim 1304bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 13059c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1306c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1307237c0790SJaegeuk Kim if (!PageUptodate(page)) 13089c02740cSJaegeuk Kim SetPageUptodate(page); 130912719ae1SJaegeuk Kim if (set_page_dirty(page)) 131012719ae1SJaegeuk Kim dn->node_changed = true; 1311e05df3b1SJaegeuk Kim 13124bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1313205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1314479bd73aSJaegeuk Kim 1315e05df3b1SJaegeuk Kim if (ofs == 0) 1316e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1317e05df3b1SJaegeuk Kim return page; 1318e05df3b1SJaegeuk Kim 1319e05df3b1SJaegeuk Kim fail: 132071e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1321e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1322e05df3b1SJaegeuk Kim return ERR_PTR(err); 1323e05df3b1SJaegeuk Kim } 1324e05df3b1SJaegeuk Kim 132556ae674cSJaegeuk Kim /* 132656ae674cSJaegeuk Kim * Caller should do after getting the following values. 132756ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 132886531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 132956ae674cSJaegeuk Kim */ 1330*7649c873SBart Van Assche static int read_node_page(struct page *page, blk_opf_t op_flags) 1331e05df3b1SJaegeuk Kim { 13324081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1333e05df3b1SJaegeuk Kim struct node_info ni; 1334cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 133505ca3632SJaegeuk Kim .sbi = sbi, 1336cf04e8ebSJaegeuk Kim .type = NODE, 133704d328deSMike Christie .op = REQ_OP_READ, 133804d328deSMike Christie .op_flags = op_flags, 133905ca3632SJaegeuk Kim .page = page, 13404375a336SJaegeuk Kim .encrypted_page = NULL, 1341cf04e8ebSJaegeuk Kim }; 13427735730dSChao Yu int err; 1343e05df3b1SJaegeuk Kim 134454c55c4eSWeichao Guo if (PageUptodate(page)) { 1345b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1346b42b179bSChao Yu ClearPageUptodate(page); 134710f966bbSChao Yu return -EFSBADCRC; 1348b42b179bSChao Yu } 13493bdad3c7SJaegeuk Kim return LOCKED_PAGE; 135054c55c4eSWeichao Guo } 13513bdad3c7SJaegeuk Kim 1352a9419b63SJaegeuk Kim err = f2fs_get_node_info(sbi, page->index, &ni, false); 13537735730dSChao Yu if (err) 13547735730dSChao Yu return err; 1355e05df3b1SJaegeuk Kim 1356b7ec2061SJaegeuk Kim /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */ 1357b7ec2061SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR) || 135883a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 13592bca1e23SJaegeuk Kim ClearPageUptodate(page); 1360e05df3b1SJaegeuk Kim return -ENOENT; 1361393ff91fSJaegeuk Kim } 1362393ff91fSJaegeuk Kim 13637a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13648b83ac81SChao Yu 13658b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13668b83ac81SChao Yu 13678b83ac81SChao Yu if (!err) 13688b83ac81SChao Yu f2fs_update_iostat(sbi, FS_NODE_READ_IO, F2FS_BLKSIZE); 13698b83ac81SChao Yu 13708b83ac81SChao Yu return err; 1371e05df3b1SJaegeuk Kim } 1372e05df3b1SJaegeuk Kim 13730a8165d7SJaegeuk Kim /* 1374e05df3b1SJaegeuk Kim * Readahead a node page 1375e05df3b1SJaegeuk Kim */ 13764d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1377e05df3b1SJaegeuk Kim { 1378e05df3b1SJaegeuk Kim struct page *apage; 137956ae674cSJaegeuk Kim int err; 1380e05df3b1SJaegeuk Kim 1381e8458725SChao Yu if (!nid) 1382e8458725SChao Yu return; 13834d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1384a4f843bdSJaegeuk Kim return; 1385e8458725SChao Yu 13865ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1387999270deSFan Li if (apage) 1388393ff91fSJaegeuk Kim return; 1389e05df3b1SJaegeuk Kim 1390300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1391e05df3b1SJaegeuk Kim if (!apage) 1392e05df3b1SJaegeuk Kim return; 1393e05df3b1SJaegeuk Kim 139470246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 139586531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1396e05df3b1SJaegeuk Kim } 1397e05df3b1SJaegeuk Kim 139817a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 13990e022ea8SChao Yu struct page *parent, int start) 1400e05df3b1SJaegeuk Kim { 140156ae674cSJaegeuk Kim struct page *page; 140256ae674cSJaegeuk Kim int err; 14034aa69d56SJaegeuk Kim 14044aa69d56SJaegeuk Kim if (!nid) 14054aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 14064d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1407a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1408afcb7ca0SJaegeuk Kim repeat: 1409300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1410e05df3b1SJaegeuk Kim if (!page) 1411e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1412e05df3b1SJaegeuk Kim 141370fd7614SChristoph Hellwig err = read_node_page(page, 0); 141486531d6bSJaegeuk Kim if (err < 0) { 1415a7b8618aSJaegeuk Kim goto out_put_err; 1416e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 14171f258ec1SChao Yu err = 0; 1418e1c51b9fSChao Yu goto page_hit; 141986531d6bSJaegeuk Kim } 1420aaf96075SJaegeuk Kim 14210e022ea8SChao Yu if (parent) 14224d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 14230e022ea8SChao Yu 1424e1c51b9fSChao Yu lock_page(page); 1425e1c51b9fSChao Yu 14264ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1427afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1428afcb7ca0SJaegeuk Kim goto repeat; 1429afcb7ca0SJaegeuk Kim } 14301563ac75SChao Yu 14311f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14321f258ec1SChao Yu err = -EIO; 14331563ac75SChao Yu goto out_err; 14341f258ec1SChao Yu } 1435704956ecSChao Yu 1436704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 143710f966bbSChao Yu err = -EFSBADCRC; 1438704956ecSChao Yu goto out_err; 1439704956ecSChao Yu } 1440e1c51b9fSChao Yu page_hit: 1441a7b8618aSJaegeuk Kim if (likely(nid == nid_of_node(page))) 1442a7b8618aSJaegeuk Kim return page; 1443a7b8618aSJaegeuk Kim 1444dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14451f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14461f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14471f258ec1SChao Yu next_blkaddr_of_node(page)); 14486663b138SWeichao Guo set_sbi_flag(sbi, SBI_NEED_FSCK); 14491f258ec1SChao Yu err = -EINVAL; 14500c9df7fbSYunlong Song out_err: 1451ee605234SJaegeuk Kim ClearPageUptodate(page); 1452a7b8618aSJaegeuk Kim out_put_err: 145382c7863eSJaegeuk Kim /* ENOENT comes from read_node_page which is not an error. */ 145482c7863eSJaegeuk Kim if (err != -ENOENT) 1455a7b8618aSJaegeuk Kim f2fs_handle_page_eio(sbi, page->index, NODE); 14560c9df7fbSYunlong Song f2fs_put_page(page, 1); 14571f258ec1SChao Yu return ERR_PTR(err); 14580c9df7fbSYunlong Song } 1459e05df3b1SJaegeuk Kim 14604d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14610e022ea8SChao Yu { 14620e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14630e022ea8SChao Yu } 14640e022ea8SChao Yu 14654d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1466e05df3b1SJaegeuk Kim { 14674081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14680e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1469e05df3b1SJaegeuk Kim 14700e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1471e05df3b1SJaegeuk Kim } 1472e05df3b1SJaegeuk Kim 14732049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14742049d4fcSJaegeuk Kim { 14752049d4fcSJaegeuk Kim struct inode *inode; 14762049d4fcSJaegeuk Kim struct page *page; 14770f3311a8SChao Yu int ret; 14782049d4fcSJaegeuk Kim 14792049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14802049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14812049d4fcSJaegeuk Kim if (!inode) 14822049d4fcSJaegeuk Kim return; 14832049d4fcSJaegeuk Kim 148401eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 148501eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14862049d4fcSJaegeuk Kim if (!page) 14872049d4fcSJaegeuk Kim goto iput_out; 14882049d4fcSJaegeuk Kim 14892049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14902049d4fcSJaegeuk Kim goto page_out; 14912049d4fcSJaegeuk Kim 14922049d4fcSJaegeuk Kim if (!PageDirty(page)) 14932049d4fcSJaegeuk Kim goto page_out; 14942049d4fcSJaegeuk Kim 14952049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14962049d4fcSJaegeuk Kim goto page_out; 14972049d4fcSJaegeuk Kim 14980f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14992049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 15004d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 15010f3311a8SChao Yu if (ret) 15022049d4fcSJaegeuk Kim set_page_dirty(page); 15032049d4fcSJaegeuk Kim page_out: 15044a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 15052049d4fcSJaegeuk Kim iput_out: 15062049d4fcSJaegeuk Kim iput(inode); 15072049d4fcSJaegeuk Kim } 15082049d4fcSJaegeuk Kim 1509608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1510e05df3b1SJaegeuk Kim { 1511028a63a6SJan Kara pgoff_t index; 1512e05df3b1SJaegeuk Kim struct pagevec pvec; 1513608514deSJaegeuk Kim struct page *last_page = NULL; 1514028a63a6SJan Kara int nr_pages; 151552681375SJaegeuk Kim 151686679820SMel Gorman pagevec_init(&pvec); 151752681375SJaegeuk Kim index = 0; 151852681375SJaegeuk Kim 1519028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 152067fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1521028a63a6SJan Kara int i; 152252681375SJaegeuk Kim 152352681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 152452681375SJaegeuk Kim struct page *page = pvec.pages[i]; 152552681375SJaegeuk Kim 152652681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1527608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 152852681375SJaegeuk Kim pagevec_release(&pvec); 1529608514deSJaegeuk Kim return ERR_PTR(-EIO); 153052681375SJaegeuk Kim } 153152681375SJaegeuk Kim 153252681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 153352681375SJaegeuk Kim continue; 153452681375SJaegeuk Kim if (ino_of_node(page) != ino) 153552681375SJaegeuk Kim continue; 153652681375SJaegeuk Kim 153752681375SJaegeuk Kim lock_page(page); 153852681375SJaegeuk Kim 153952681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 154052681375SJaegeuk Kim continue_unlock: 154152681375SJaegeuk Kim unlock_page(page); 154252681375SJaegeuk Kim continue; 154352681375SJaegeuk Kim } 154452681375SJaegeuk Kim if (ino_of_node(page) != ino) 154552681375SJaegeuk Kim goto continue_unlock; 154652681375SJaegeuk Kim 154752681375SJaegeuk Kim if (!PageDirty(page)) { 154852681375SJaegeuk Kim /* someone wrote it for us */ 154952681375SJaegeuk Kim goto continue_unlock; 155052681375SJaegeuk Kim } 155152681375SJaegeuk Kim 1552608514deSJaegeuk Kim if (last_page) 1553608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1554608514deSJaegeuk Kim 1555608514deSJaegeuk Kim get_page(page); 1556608514deSJaegeuk Kim last_page = page; 1557608514deSJaegeuk Kim unlock_page(page); 1558608514deSJaegeuk Kim } 1559608514deSJaegeuk Kim pagevec_release(&pvec); 1560608514deSJaegeuk Kim cond_resched(); 1561608514deSJaegeuk Kim } 1562608514deSJaegeuk Kim return last_page; 1563608514deSJaegeuk Kim } 1564608514deSJaegeuk Kim 1565d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1566b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 156750fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1568faa24895SJaegeuk Kim { 1569faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1570faa24895SJaegeuk Kim nid_t nid; 1571faa24895SJaegeuk Kim struct node_info ni; 1572faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1573faa24895SJaegeuk Kim .sbi = sbi, 157439d787beSChao Yu .ino = ino_of_node(page), 1575faa24895SJaegeuk Kim .type = NODE, 1576faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1577faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1578faa24895SJaegeuk Kim .page = page, 1579faa24895SJaegeuk Kim .encrypted_page = NULL, 1580d68f735bSJaegeuk Kim .submitted = false, 1581b0af6d49SChao Yu .io_type = io_type, 1582578c6478SYufen Yu .io_wbc = wbc, 1583faa24895SJaegeuk Kim }; 158450fa53ecSChao Yu unsigned int seq; 1585faa24895SJaegeuk Kim 1586faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1587faa24895SJaegeuk Kim 15886d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 15896d7c865cSJaegeuk Kim ClearPageUptodate(page); 15906d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 15916d7c865cSJaegeuk Kim unlock_page(page); 15926d7c865cSJaegeuk Kim return 0; 15936d7c865cSJaegeuk Kim } 1594db198ae0SChao Yu 1595faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1596faa24895SJaegeuk Kim goto redirty_out; 1597faa24895SJaegeuk Kim 1598100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1599100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1600fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1601fd8c8cafSChao Yu goto redirty_out; 1602fd8c8cafSChao Yu 1603faa24895SJaegeuk Kim /* get old block addr of this node page */ 1604faa24895SJaegeuk Kim nid = nid_of_node(page); 1605faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1606faa24895SJaegeuk Kim 1607a9419b63SJaegeuk Kim if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) 16087735730dSChao Yu goto redirty_out; 16097735730dSChao Yu 1610faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1611e4544b63STim Murray if (!f2fs_down_read_trylock(&sbi->node_write)) 1612faa24895SJaegeuk Kim goto redirty_out; 1613faa24895SJaegeuk Kim } else { 1614e4544b63STim Murray f2fs_down_read(&sbi->node_write); 1615faa24895SJaegeuk Kim } 1616faa24895SJaegeuk Kim 1617faa24895SJaegeuk Kim /* This page is already truncated */ 1618faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1619faa24895SJaegeuk Kim ClearPageUptodate(page); 1620faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1621e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1622faa24895SJaegeuk Kim unlock_page(page); 1623faa24895SJaegeuk Kim return 0; 1624faa24895SJaegeuk Kim } 1625faa24895SJaegeuk Kim 1626c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 162793770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 162893770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 1629e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1630c9b60788SChao Yu goto redirty_out; 163189d13c38SJaegeuk Kim } 1632c9b60788SChao Yu 1633c550e25bSJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi)) 1634e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1635e7c75ab0SJaegeuk Kim 1636dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 163750fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 163850fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 163950fa53ecSChao Yu if (seq_id) 164050fa53ecSChao Yu *seq_id = seq; 164150fa53ecSChao Yu } 164250fa53ecSChao Yu 1643dc5a9412SChao Yu set_page_writeback(page); 1644dc5a9412SChao Yu ClearPageError(page); 1645dc5a9412SChao Yu 1646faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16474d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1648faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1649faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1650e4544b63STim Murray f2fs_up_read(&sbi->node_write); 1651faa24895SJaegeuk Kim 1652d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1653bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1654d68f735bSJaegeuk Kim submitted = NULL; 1655d68f735bSJaegeuk Kim } 1656faa24895SJaegeuk Kim 1657faa24895SJaegeuk Kim unlock_page(page); 1658faa24895SJaegeuk Kim 1659d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1660b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1661d68f735bSJaegeuk Kim submitted = NULL; 1662d68f735bSJaegeuk Kim } 1663d68f735bSJaegeuk Kim if (submitted) 1664d68f735bSJaegeuk Kim *submitted = fio.submitted; 1665faa24895SJaegeuk Kim 1666401db79fSYunlong Song if (do_balance) 1667401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1668faa24895SJaegeuk Kim return 0; 1669faa24895SJaegeuk Kim 1670faa24895SJaegeuk Kim redirty_out: 1671faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1672faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1673faa24895SJaegeuk Kim } 1674faa24895SJaegeuk Kim 167548018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1676f15194fcSYunlei He { 167748018b4cSChao Yu int err = 0; 167848018b4cSChao Yu 1679f15194fcSYunlei He if (gc_type == FG_GC) { 1680f15194fcSYunlei He struct writeback_control wbc = { 1681f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1682f15194fcSYunlei He .nr_to_write = 1, 1683f15194fcSYunlei He .for_reclaim = 0, 1684f15194fcSYunlei He }; 1685f15194fcSYunlei He 1686bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16878d64d365SChao Yu 16888d64d365SChao Yu set_page_dirty(node_page); 16898d64d365SChao Yu 169048018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 169148018b4cSChao Yu err = -EAGAIN; 1692f15194fcSYunlei He goto out_page; 169348018b4cSChao Yu } 1694f15194fcSYunlei He 1695f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 169648018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 169748018b4cSChao Yu err = -EAGAIN; 1698f15194fcSYunlei He unlock_page(node_page); 169948018b4cSChao Yu } 1700f15194fcSYunlei He goto release_page; 1701f15194fcSYunlei He } else { 1702f15194fcSYunlei He /* set page dirty and write it */ 1703f15194fcSYunlei He if (!PageWriteback(node_page)) 1704f15194fcSYunlei He set_page_dirty(node_page); 1705f15194fcSYunlei He } 1706f15194fcSYunlei He out_page: 1707f15194fcSYunlei He unlock_page(node_page); 1708f15194fcSYunlei He release_page: 1709f15194fcSYunlei He f2fs_put_page(node_page, 0); 171048018b4cSChao Yu return err; 1711f15194fcSYunlei He } 1712f15194fcSYunlei He 1713faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1714faa24895SJaegeuk Kim struct writeback_control *wbc) 1715faa24895SJaegeuk Kim { 171650fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 171750fa53ecSChao Yu FS_NODE_IO, NULL); 1718faa24895SJaegeuk Kim } 1719faa24895SJaegeuk Kim 17204d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 172150fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 172250fa53ecSChao Yu unsigned int *seq_id) 1723608514deSJaegeuk Kim { 1724028a63a6SJan Kara pgoff_t index; 1725608514deSJaegeuk Kim struct pagevec pvec; 1726608514deSJaegeuk Kim int ret = 0; 1727608514deSJaegeuk Kim struct page *last_page = NULL; 1728608514deSJaegeuk Kim bool marked = false; 172926de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1730028a63a6SJan Kara int nr_pages; 1731bab475c5SChao Yu int nwritten = 0; 1732608514deSJaegeuk Kim 1733608514deSJaegeuk Kim if (atomic) { 1734608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1735608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1736608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1737608514deSJaegeuk Kim } 1738608514deSJaegeuk Kim retry: 173986679820SMel Gorman pagevec_init(&pvec); 1740608514deSJaegeuk Kim index = 0; 1741608514deSJaegeuk Kim 1742028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 174367fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1744028a63a6SJan Kara int i; 1745608514deSJaegeuk Kim 1746608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1747608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1748d68f735bSJaegeuk Kim bool submitted = false; 1749608514deSJaegeuk Kim 1750608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1751608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1752608514deSJaegeuk Kim pagevec_release(&pvec); 17539de69279SChao Yu ret = -EIO; 17549de69279SChao Yu goto out; 1755608514deSJaegeuk Kim } 1756608514deSJaegeuk Kim 1757608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1758608514deSJaegeuk Kim continue; 1759608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1760608514deSJaegeuk Kim continue; 1761608514deSJaegeuk Kim 1762608514deSJaegeuk Kim lock_page(page); 1763608514deSJaegeuk Kim 1764608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1765608514deSJaegeuk Kim continue_unlock: 1766608514deSJaegeuk Kim unlock_page(page); 1767608514deSJaegeuk Kim continue; 1768608514deSJaegeuk Kim } 1769608514deSJaegeuk Kim if (ino_of_node(page) != ino) 177052681375SJaegeuk Kim goto continue_unlock; 177152681375SJaegeuk Kim 1772608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1773608514deSJaegeuk Kim /* someone wrote it for us */ 1774608514deSJaegeuk Kim goto continue_unlock; 1775608514deSJaegeuk Kim } 1776608514deSJaegeuk Kim 1777bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1778608514deSJaegeuk Kim 1779d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1780d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1781d29fd172SJaegeuk Kim 1782608514deSJaegeuk Kim if (!atomic || page == last_page) { 178352681375SJaegeuk Kim set_fsync_mark(page, 1); 178447c8ebccSJaegeuk Kim percpu_counter_inc(&sbi->rf_node_block_count); 178526de9b11SJaegeuk Kim if (IS_INODE(page)) { 178626de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 178726de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17884d57b86dSChao Yu f2fs_update_inode(inode, page); 178952681375SJaegeuk Kim set_dentry_mark(page, 17904d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 179126de9b11SJaegeuk Kim } 1792608514deSJaegeuk Kim /* may be written by other thread */ 1793608514deSJaegeuk Kim if (!PageDirty(page)) 1794608514deSJaegeuk Kim set_page_dirty(page); 1795608514deSJaegeuk Kim } 1796608514deSJaegeuk Kim 1797608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1798608514deSJaegeuk Kim goto continue_unlock; 179952681375SJaegeuk Kim 1800e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1801d68f735bSJaegeuk Kim page == last_page, 1802b0af6d49SChao Yu &submitted, wbc, true, 180350fa53ecSChao Yu FS_NODE_IO, seq_id); 1804c267ec15SJaegeuk Kim if (ret) { 180552681375SJaegeuk Kim unlock_page(page); 1806608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1807608514deSJaegeuk Kim break; 1808d68f735bSJaegeuk Kim } else if (submitted) { 1809bab475c5SChao Yu nwritten++; 1810608514deSJaegeuk Kim } 18113f5f4959SChao Yu 1812608514deSJaegeuk Kim if (page == last_page) { 1813608514deSJaegeuk Kim f2fs_put_page(page, 0); 1814608514deSJaegeuk Kim marked = true; 181552681375SJaegeuk Kim break; 181652681375SJaegeuk Kim } 1817c267ec15SJaegeuk Kim } 181852681375SJaegeuk Kim pagevec_release(&pvec); 181952681375SJaegeuk Kim cond_resched(); 182052681375SJaegeuk Kim 1821608514deSJaegeuk Kim if (ret || marked) 182252681375SJaegeuk Kim break; 182352681375SJaegeuk Kim } 1824608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1825dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1826608514deSJaegeuk Kim ino, last_page->index); 1827608514deSJaegeuk Kim lock_page(last_page); 1828bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1829608514deSJaegeuk Kim set_page_dirty(last_page); 1830608514deSJaegeuk Kim unlock_page(last_page); 1831608514deSJaegeuk Kim goto retry; 1832608514deSJaegeuk Kim } 18339de69279SChao Yu out: 1834bab475c5SChao Yu if (nwritten) 1835bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1836c267ec15SJaegeuk Kim return ret ? -EIO : 0; 183752681375SJaegeuk Kim } 183852681375SJaegeuk Kim 1839052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1840052a82d8SChao Yu { 1841052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1842052a82d8SChao Yu bool clean; 1843052a82d8SChao Yu 1844052a82d8SChao Yu if (inode->i_ino != ino) 1845052a82d8SChao Yu return 0; 1846052a82d8SChao Yu 1847052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1848052a82d8SChao Yu return 0; 1849052a82d8SChao Yu 1850052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1851052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1852052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1853052a82d8SChao Yu 1854052a82d8SChao Yu if (clean) 1855052a82d8SChao Yu return 0; 1856052a82d8SChao Yu 1857052a82d8SChao Yu inode = igrab(inode); 1858052a82d8SChao Yu if (!inode) 1859052a82d8SChao Yu return 0; 1860052a82d8SChao Yu return 1; 1861052a82d8SChao Yu } 1862052a82d8SChao Yu 1863052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1864052a82d8SChao Yu { 1865052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1866052a82d8SChao Yu struct inode *inode; 1867052a82d8SChao Yu nid_t ino = ino_of_node(page); 1868052a82d8SChao Yu 1869052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1870052a82d8SChao Yu if (!inode) 1871052a82d8SChao Yu return false; 1872052a82d8SChao Yu 1873052a82d8SChao Yu f2fs_update_inode(inode, page); 1874052a82d8SChao Yu unlock_page(page); 1875052a82d8SChao Yu 1876052a82d8SChao Yu iput(inode); 1877052a82d8SChao Yu return true; 1878052a82d8SChao Yu } 1879052a82d8SChao Yu 188068e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 188134c061adSSayali Lokhande { 188234c061adSSayali Lokhande pgoff_t index = 0; 188334c061adSSayali Lokhande struct pagevec pvec; 188434c061adSSayali Lokhande int nr_pages; 188534c061adSSayali Lokhande 188634c061adSSayali Lokhande pagevec_init(&pvec); 188734c061adSSayali Lokhande 188834c061adSSayali Lokhande while ((nr_pages = pagevec_lookup_tag(&pvec, 188934c061adSSayali Lokhande NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 189034c061adSSayali Lokhande int i; 189134c061adSSayali Lokhande 189234c061adSSayali Lokhande for (i = 0; i < nr_pages; i++) { 189334c061adSSayali Lokhande struct page *page = pvec.pages[i]; 189434c061adSSayali Lokhande 189534c061adSSayali Lokhande if (!IS_DNODE(page)) 189634c061adSSayali Lokhande continue; 189734c061adSSayali Lokhande 189834c061adSSayali Lokhande lock_page(page); 189934c061adSSayali Lokhande 190034c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 190134c061adSSayali Lokhande continue_unlock: 190234c061adSSayali Lokhande unlock_page(page); 190334c061adSSayali Lokhande continue; 190434c061adSSayali Lokhande } 190534c061adSSayali Lokhande 190634c061adSSayali Lokhande if (!PageDirty(page)) { 190734c061adSSayali Lokhande /* someone wrote it for us */ 190834c061adSSayali Lokhande goto continue_unlock; 190934c061adSSayali Lokhande } 191034c061adSSayali Lokhande 191134c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1912b763f3beSChao Yu if (page_private_inline(page)) { 1913b763f3beSChao Yu clear_page_private_inline(page); 191434c061adSSayali Lokhande unlock_page(page); 191534c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 191634c061adSSayali Lokhande continue; 191734c061adSSayali Lokhande } 191834c061adSSayali Lokhande unlock_page(page); 191934c061adSSayali Lokhande } 192034c061adSSayali Lokhande pagevec_release(&pvec); 192134c061adSSayali Lokhande cond_resched(); 192234c061adSSayali Lokhande } 192334c061adSSayali Lokhande } 192434c061adSSayali Lokhande 19254d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 19264d57b86dSChao Yu struct writeback_control *wbc, 1927b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 192852681375SJaegeuk Kim { 1929028a63a6SJan Kara pgoff_t index; 193052681375SJaegeuk Kim struct pagevec pvec; 193152681375SJaegeuk Kim int step = 0; 193212bb0a8fSJaegeuk Kim int nwritten = 0; 19333f5f4959SChao Yu int ret = 0; 1934c29fd0c0SChao Yu int nr_pages, done = 0; 1935e05df3b1SJaegeuk Kim 193686679820SMel Gorman pagevec_init(&pvec); 1937e05df3b1SJaegeuk Kim 1938e05df3b1SJaegeuk Kim next_step: 1939e05df3b1SJaegeuk Kim index = 0; 1940e05df3b1SJaegeuk Kim 1941c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1942c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1943028a63a6SJan Kara int i; 1944e05df3b1SJaegeuk Kim 1945e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1946e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1947d68f735bSJaegeuk Kim bool submitted = false; 1948052a82d8SChao Yu bool may_dirty = true; 1949e05df3b1SJaegeuk Kim 1950c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1951c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1952c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1953c29fd0c0SChao Yu done = 1; 1954c29fd0c0SChao Yu break; 1955c29fd0c0SChao Yu } 1956c29fd0c0SChao Yu 1957e05df3b1SJaegeuk Kim /* 1958e05df3b1SJaegeuk Kim * flushing sequence with step: 1959e05df3b1SJaegeuk Kim * 0. indirect nodes 1960e05df3b1SJaegeuk Kim * 1. dentry dnodes 1961e05df3b1SJaegeuk Kim * 2. file dnodes 1962e05df3b1SJaegeuk Kim */ 1963e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1964e05df3b1SJaegeuk Kim continue; 1965e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1966e05df3b1SJaegeuk Kim is_cold_node(page))) 1967e05df3b1SJaegeuk Kim continue; 1968e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1969e05df3b1SJaegeuk Kim !is_cold_node(page))) 1970e05df3b1SJaegeuk Kim continue; 19719a4cbc9eSChao Yu lock_node: 19724b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 19734b270a8cSChao Yu lock_page(page); 19744b270a8cSChao Yu else if (!trylock_page(page)) 1975e05df3b1SJaegeuk Kim continue; 1976e05df3b1SJaegeuk Kim 19774ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1978e05df3b1SJaegeuk Kim continue_unlock: 1979e05df3b1SJaegeuk Kim unlock_page(page); 1980e05df3b1SJaegeuk Kim continue; 1981e05df3b1SJaegeuk Kim } 1982e05df3b1SJaegeuk Kim 1983e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1984e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1985e05df3b1SJaegeuk Kim goto continue_unlock; 1986e05df3b1SJaegeuk Kim } 1987e05df3b1SJaegeuk Kim 1988b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 1989b0f3b87fSJaegeuk Kim if (!do_balance) 1990b0f3b87fSJaegeuk Kim goto write_node; 1991b0f3b87fSJaegeuk Kim 1992b0f3b87fSJaegeuk Kim /* flush inline_data */ 1993b763f3beSChao Yu if (page_private_inline(page)) { 1994b763f3beSChao Yu clear_page_private_inline(page); 19952049d4fcSJaegeuk Kim unlock_page(page); 19962049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 19979a4cbc9eSChao Yu goto lock_node; 19982049d4fcSJaegeuk Kim } 19992049d4fcSJaegeuk Kim 2000052a82d8SChao Yu /* flush dirty inode */ 2001052a82d8SChao Yu if (IS_INODE(page) && may_dirty) { 2002052a82d8SChao Yu may_dirty = false; 2003052a82d8SChao Yu if (flush_dirty_inode(page)) 2004052a82d8SChao Yu goto lock_node; 2005052a82d8SChao Yu } 2006b0f3b87fSJaegeuk Kim write_node: 2007bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 2008fa3d2bdfSJaegeuk Kim 2009e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 2010e05df3b1SJaegeuk Kim goto continue_unlock; 2011e05df3b1SJaegeuk Kim 2012e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 2013e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 201452746519SJaegeuk Kim 2015401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 201650fa53ecSChao Yu wbc, do_balance, io_type, NULL); 2017d68f735bSJaegeuk Kim if (ret) 201852746519SJaegeuk Kim unlock_page(page); 2019d68f735bSJaegeuk Kim else if (submitted) 20203f5f4959SChao Yu nwritten++; 2021e05df3b1SJaegeuk Kim 2022e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 2023e05df3b1SJaegeuk Kim break; 2024e05df3b1SJaegeuk Kim } 2025e05df3b1SJaegeuk Kim pagevec_release(&pvec); 2026e05df3b1SJaegeuk Kim cond_resched(); 2027e05df3b1SJaegeuk Kim 2028e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 2029e05df3b1SJaegeuk Kim step = 2; 2030e05df3b1SJaegeuk Kim break; 2031e05df3b1SJaegeuk Kim } 2032e05df3b1SJaegeuk Kim } 2033e05df3b1SJaegeuk Kim 2034e05df3b1SJaegeuk Kim if (step < 2) { 2035100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2036100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2037fd8c8cafSChao Yu goto out; 2038e05df3b1SJaegeuk Kim step++; 2039e05df3b1SJaegeuk Kim goto next_step; 2040e05df3b1SJaegeuk Kim } 2041fd8c8cafSChao Yu out: 20423f5f4959SChao Yu if (nwritten) 2043b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2044db198ae0SChao Yu 2045db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2046db198ae0SChao Yu return -EIO; 20473f5f4959SChao Yu return ret; 2048e05df3b1SJaegeuk Kim } 2049e05df3b1SJaegeuk Kim 205050fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 205150fa53ecSChao Yu unsigned int seq_id) 2052cfe58f9dSJaegeuk Kim { 205350fa53ecSChao Yu struct fsync_node_entry *fn; 205450fa53ecSChao Yu struct page *page; 205550fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 205650fa53ecSChao Yu unsigned long flags; 205750fa53ecSChao Yu unsigned int cur_seq_id = 0; 2058280db3c8SMiklos Szeredi int ret2, ret = 0; 2059cfe58f9dSJaegeuk Kim 206050fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 206150fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 206250fa53ecSChao Yu if (list_empty(head)) { 206350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 206450fa53ecSChao Yu break; 206550fa53ecSChao Yu } 206650fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 206750fa53ecSChao Yu if (fn->seq_id > seq_id) { 206850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 206950fa53ecSChao Yu break; 207050fa53ecSChao Yu } 207150fa53ecSChao Yu cur_seq_id = fn->seq_id; 207250fa53ecSChao Yu page = fn->page; 207350fa53ecSChao Yu get_page(page); 207450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20754ef51a8fSJaegeuk Kim 2076bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 2077cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 2078cfe58f9dSJaegeuk Kim ret = -EIO; 207950fa53ecSChao Yu 208050fa53ecSChao Yu put_page(page); 208150fa53ecSChao Yu 208250fa53ecSChao Yu if (ret) 208350fa53ecSChao Yu break; 2084cfe58f9dSJaegeuk Kim } 2085cfe58f9dSJaegeuk Kim 2086280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 2087cfe58f9dSJaegeuk Kim if (!ret) 2088cfe58f9dSJaegeuk Kim ret = ret2; 208950fa53ecSChao Yu 2090cfe58f9dSJaegeuk Kim return ret; 2091cfe58f9dSJaegeuk Kim } 2092cfe58f9dSJaegeuk Kim 2093e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 2094e05df3b1SJaegeuk Kim struct writeback_control *wbc) 2095e05df3b1SJaegeuk Kim { 20964081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 20979dfa1bafSJaegeuk Kim struct blk_plug plug; 209850c8cdb3SJaegeuk Kim long diff; 2099e05df3b1SJaegeuk Kim 21000771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 21010771fcc7SChao Yu goto skip_write; 21020771fcc7SChao Yu 21034660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 21047bcd0cfaSChao Yu f2fs_balance_fs_bg(sbi, true); 2105e05df3b1SJaegeuk Kim 2106a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 2107812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 2108812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 2109812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 2110d3baf95dSJaegeuk Kim goto skip_write; 2111a7fdffbdSJaegeuk Kim 2112c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2113c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 211434415099SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) { 211534415099SChao Yu /* to avoid potential deadlock */ 211634415099SChao Yu if (current->plug) 211734415099SChao Yu blk_finish_plug(current->plug); 2118c29fd0c0SChao Yu goto skip_write; 211934415099SChao Yu } 2120c29fd0c0SChao Yu 2121d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2122d31c7c3fSYunlei He 212350c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 21249dfa1bafSJaegeuk Kim blk_start_plug(&plug); 21254d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 21269dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 212750c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2128c29fd0c0SChao Yu 2129c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2130c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2131e05df3b1SJaegeuk Kim return 0; 2132d3baf95dSJaegeuk Kim 2133d3baf95dSJaegeuk Kim skip_write: 2134d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2135d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2136d3baf95dSJaegeuk Kim return 0; 2137e05df3b1SJaegeuk Kim } 2138e05df3b1SJaegeuk Kim 2139cbc975b1SMatthew Wilcox (Oracle) static bool f2fs_dirty_node_folio(struct address_space *mapping, 2140cbc975b1SMatthew Wilcox (Oracle) struct folio *folio) 2141e05df3b1SJaegeuk Kim { 2142cbc975b1SMatthew Wilcox (Oracle) trace_f2fs_set_page_dirty(&folio->page, NODE); 214326c6b887SJaegeuk Kim 2144cbc975b1SMatthew Wilcox (Oracle) if (!folio_test_uptodate(folio)) 2145cbc975b1SMatthew Wilcox (Oracle) folio_mark_uptodate(folio); 214654c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 2147cbc975b1SMatthew Wilcox (Oracle) if (IS_INODE(&folio->page)) 214829c87793SMatthew Wilcox (Oracle) f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page); 214954c55c4eSWeichao Guo #endif 2150cbc975b1SMatthew Wilcox (Oracle) if (!folio_test_dirty(folio)) { 2151cbc975b1SMatthew Wilcox (Oracle) filemap_dirty_folio(mapping, folio); 215229c87793SMatthew Wilcox (Oracle) inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 2153cbc975b1SMatthew Wilcox (Oracle) set_page_private_reference(&folio->page); 2154cbc975b1SMatthew Wilcox (Oracle) return true; 2155e05df3b1SJaegeuk Kim } 2156cbc975b1SMatthew Wilcox (Oracle) return false; 2157e05df3b1SJaegeuk Kim } 2158e05df3b1SJaegeuk Kim 21590a8165d7SJaegeuk Kim /* 2160e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2161e05df3b1SJaegeuk Kim */ 2162e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2163e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2164e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2165cbc975b1SMatthew Wilcox (Oracle) .dirty_folio = f2fs_dirty_node_folio, 216691503996SMatthew Wilcox (Oracle) .invalidate_folio = f2fs_invalidate_folio, 2167c26cd045SMatthew Wilcox (Oracle) .release_folio = f2fs_release_folio, 21685b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 21695b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 21705b7a487cSWeichao Guo #endif 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