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> 11e05df3b1SJaegeuk Kim #include <linux/backing-dev.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" 2051dd6249SNamjae Jeon #include <trace/events/f2fs.h> 21e05df3b1SJaegeuk Kim 224d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 23f978f5a0SGu Zheng 24e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 25e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 26aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 2750fa53ecSChao Yu static struct kmem_cache *fsync_node_entry_slab; 28e05df3b1SJaegeuk Kim 29a4f843bdSJaegeuk Kim /* 30a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 31a4f843bdSJaegeuk Kim */ 324d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 33a4f843bdSJaegeuk Kim { 34a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 35a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 36dcbb4c10SJoe Perches f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.", 37a4f843bdSJaegeuk Kim __func__, nid); 3810f966bbSChao Yu return -EFSCORRUPTED; 39a4f843bdSJaegeuk Kim } 40a4f843bdSJaegeuk Kim return 0; 41a4f843bdSJaegeuk Kim } 42a4f843bdSJaegeuk Kim 434d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 44cdfc41c1SJaegeuk Kim { 456fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 46d6d2b491SSahitya Tummala struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 47cdfc41c1SJaegeuk Kim struct sysinfo val; 48e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 49cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 506fb03f3aSJaegeuk Kim bool res = false; 51cdfc41c1SJaegeuk Kim 52d6d2b491SSahitya Tummala if (!nm_i) 53d6d2b491SSahitya Tummala return true; 54d6d2b491SSahitya Tummala 55cdfc41c1SJaegeuk Kim si_meminfo(&val); 56e5e7ea3cSJaegeuk Kim 57e5e7ea3cSJaegeuk Kim /* only uses low memory */ 58e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 59e5e7ea3cSJaegeuk Kim 60429511cdSChao Yu /* 61429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 62429511cdSChao Yu */ 636fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 649a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 65b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 66e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 676fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 68a95ba66aSJaegeuk Kim mem_size = (nm_i->nat_cnt[TOTAL_NAT] * 69a95ba66aSJaegeuk Kim sizeof(struct nat_entry)) >> PAGE_SHIFT; 70e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 71e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 72e589c2c4SJaegeuk Kim res = false; 73a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 74a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 75a1257023SJaegeuk Kim return false; 76a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 77a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 78e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 79e5e7ea3cSJaegeuk Kim int i; 80e5e7ea3cSJaegeuk Kim 8139d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 828f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 838f73cbb7SKinglong Mee sizeof(struct ino_entry); 848f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 85e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 86429511cdSChao Yu } else if (type == EXTENT_CACHE) { 877441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 887441ccefSJaegeuk Kim sizeof(struct extent_tree) + 89429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 9009cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 91429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 9257864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 9357864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 9457864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 9557864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 96d6d2b491SSahitya Tummala } else if (type == DISCARD_CACHE) { 97d6d2b491SSahitya Tummala mem_size = (atomic_read(&dcc->discard_cmd_cnt) * 98d6d2b491SSahitya Tummala sizeof(struct discard_cmd)) >> PAGE_SHIFT; 99d6d2b491SSahitya Tummala res = mem_size < (avail_ram * nm_i->ram_thresh / 100); 100*6ce19affSChao Yu } else if (type == COMPRESS_PAGE) { 101*6ce19affSChao Yu #ifdef CONFIG_F2FS_FS_COMPRESSION 102*6ce19affSChao Yu unsigned long free_ram = val.freeram; 103*6ce19affSChao Yu 104*6ce19affSChao Yu /* 105*6ce19affSChao Yu * free memory is lower than watermark or cached page count 106*6ce19affSChao Yu * exceed threshold, deny caching compress page. 107*6ce19affSChao Yu */ 108*6ce19affSChao Yu res = (free_ram > avail_ram * sbi->compress_watermark / 100) && 109*6ce19affSChao Yu (COMPRESS_MAPPING(sbi)->nrpages < 110*6ce19affSChao Yu free_ram * sbi->compress_percent / 100); 111*6ce19affSChao Yu #else 112*6ce19affSChao Yu res = false; 113*6ce19affSChao Yu #endif 1141e84371fSJaegeuk Kim } else { 1151663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 1161663cae4SJaegeuk Kim return true; 1176fb03f3aSJaegeuk Kim } 1186fb03f3aSJaegeuk Kim return res; 119cdfc41c1SJaegeuk Kim } 120cdfc41c1SJaegeuk Kim 121e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 122e05df3b1SJaegeuk Kim { 123e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1245ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 125e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 126aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 127e05df3b1SJaegeuk Kim } 128e05df3b1SJaegeuk Kim ClearPageUptodate(page); 129e05df3b1SJaegeuk Kim } 130e05df3b1SJaegeuk Kim 131e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 132e05df3b1SJaegeuk Kim { 1333acc4522SJaegeuk Kim return f2fs_get_meta_page_retry(sbi, current_nat_addr(sbi, nid)); 134e05df3b1SJaegeuk Kim } 135e05df3b1SJaegeuk Kim 136e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 137e05df3b1SJaegeuk Kim { 138e05df3b1SJaegeuk Kim struct page *src_page; 139e05df3b1SJaegeuk Kim struct page *dst_page; 140e05df3b1SJaegeuk Kim pgoff_t dst_off; 141e05df3b1SJaegeuk Kim void *src_addr; 142e05df3b1SJaegeuk Kim void *dst_addr; 143e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 144e05df3b1SJaegeuk Kim 14580551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 146e05df3b1SJaegeuk Kim 147e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 14880551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 149edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 150edc55aafSJaegeuk Kim return src_page; 1514d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1529850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 153e05df3b1SJaegeuk Kim 154e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 155e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 15609cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 157e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 158e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 159e05df3b1SJaegeuk Kim 160e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 161e05df3b1SJaegeuk Kim 162e05df3b1SJaegeuk Kim return dst_page; 163e05df3b1SJaegeuk Kim } 164e05df3b1SJaegeuk Kim 16512f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 16612f9ef37SYunlei He { 16712f9ef37SYunlei He struct nat_entry *new; 16812f9ef37SYunlei He 16912f9ef37SYunlei He if (no_fail) 1702882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 17112f9ef37SYunlei He else 1722882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 17312f9ef37SYunlei He if (new) { 17412f9ef37SYunlei He nat_set_nid(new, nid); 17512f9ef37SYunlei He nat_reset_flag(new); 17612f9ef37SYunlei He } 17712f9ef37SYunlei He return new; 17812f9ef37SYunlei He } 17912f9ef37SYunlei He 18012f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 18112f9ef37SYunlei He { 18212f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 18312f9ef37SYunlei He } 18412f9ef37SYunlei He 18512f9ef37SYunlei He /* must be locked by nat_tree_lock */ 18612f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 18712f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 18812f9ef37SYunlei He { 18912f9ef37SYunlei He if (no_fail) 19012f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 19112f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 19212f9ef37SYunlei He return NULL; 19312f9ef37SYunlei He 19412f9ef37SYunlei He if (raw_ne) 19512f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 19622969158SChao Yu 19722969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19812f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 19922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 20022969158SChao Yu 201a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]++; 202a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 20312f9ef37SYunlei He return ne; 20412f9ef37SYunlei He } 20512f9ef37SYunlei He 206e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 207e05df3b1SJaegeuk Kim { 20822969158SChao Yu struct nat_entry *ne; 20922969158SChao Yu 21022969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 21122969158SChao Yu 21222969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 21322969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 21422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 21522969158SChao Yu if (!list_empty(&ne->list)) 21622969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 21722969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 21822969158SChao Yu } 21922969158SChao Yu 22022969158SChao Yu return ne; 221e05df3b1SJaegeuk Kim } 222e05df3b1SJaegeuk Kim 223e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 224e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 225e05df3b1SJaegeuk Kim { 226e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 227e05df3b1SJaegeuk Kim } 228e05df3b1SJaegeuk Kim 229e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 230e05df3b1SJaegeuk Kim { 231e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 232a95ba66aSJaegeuk Kim nm_i->nat_cnt[TOTAL_NAT]--; 233a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 23412f9ef37SYunlei He __free_nat_entry(e); 235e05df3b1SJaegeuk Kim } 236e05df3b1SJaegeuk Kim 237780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 238309cc2b6SJaegeuk Kim struct nat_entry *ne) 239309cc2b6SJaegeuk Kim { 240309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 241309cc2b6SJaegeuk Kim struct nat_entry_set *head; 242309cc2b6SJaegeuk Kim 243309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 244309cc2b6SJaegeuk Kim if (!head) { 24580c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 246309cc2b6SJaegeuk Kim 247309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 248309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 249309cc2b6SJaegeuk Kim head->set = set; 250309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2519be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 252309cc2b6SJaegeuk Kim } 253780de47cSChao Yu return head; 254780de47cSChao Yu } 255780de47cSChao Yu 256780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 257780de47cSChao Yu struct nat_entry *ne) 258780de47cSChao Yu { 259780de47cSChao Yu struct nat_entry_set *head; 260780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 261780de47cSChao Yu 262780de47cSChao Yu if (!new_ne) 263780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 264780de47cSChao Yu 265780de47cSChao Yu /* 266780de47cSChao Yu * update entry_cnt in below condition: 267780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 268780de47cSChao Yu * 2. update old block address to new one; 269780de47cSChao Yu */ 270780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 271780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 272780de47cSChao Yu head->entry_cnt++; 273780de47cSChao Yu 274780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 275febeca6dSChao Yu 276febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 277febeca6dSChao Yu goto refresh_list; 278febeca6dSChao Yu 279a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]++; 280a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]--; 281309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 282febeca6dSChao Yu refresh_list: 28322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 284780de47cSChao Yu if (new_ne) 285febeca6dSChao Yu list_del_init(&ne->list); 286febeca6dSChao Yu else 287febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 28822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 289309cc2b6SJaegeuk Kim } 290309cc2b6SJaegeuk Kim 291309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2920b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 293309cc2b6SJaegeuk Kim { 29422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 295309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 29622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 29722969158SChao Yu 298309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2990b28b71eSKinglong Mee set->entry_cnt--; 300a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT]--; 301a95ba66aSJaegeuk Kim nm_i->nat_cnt[RECLAIMABLE_NAT]++; 302309cc2b6SJaegeuk Kim } 303309cc2b6SJaegeuk Kim 304309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 305309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 306309cc2b6SJaegeuk Kim { 307309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 308309cc2b6SJaegeuk Kim start, nr); 309309cc2b6SJaegeuk Kim } 310309cc2b6SJaegeuk Kim 31150fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 31250fa53ecSChao Yu { 31350fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 31450fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 31550fa53ecSChao Yu } 31650fa53ecSChao Yu 31750fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 31850fa53ecSChao Yu { 31950fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 32050fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 32150fa53ecSChao Yu sbi->fsync_seg_id = 0; 32250fa53ecSChao Yu sbi->fsync_node_num = 0; 32350fa53ecSChao Yu } 32450fa53ecSChao Yu 32550fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 32650fa53ecSChao Yu struct page *page) 32750fa53ecSChao Yu { 32850fa53ecSChao Yu struct fsync_node_entry *fn; 32950fa53ecSChao Yu unsigned long flags; 33050fa53ecSChao Yu unsigned int seq_id; 33150fa53ecSChao Yu 33250fa53ecSChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, GFP_NOFS); 33350fa53ecSChao Yu 33450fa53ecSChao Yu get_page(page); 33550fa53ecSChao Yu fn->page = page; 33650fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 33750fa53ecSChao Yu 33850fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 33950fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 34050fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 34150fa53ecSChao Yu seq_id = fn->seq_id; 34250fa53ecSChao Yu sbi->fsync_node_num++; 34350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34450fa53ecSChao Yu 34550fa53ecSChao Yu return seq_id; 34650fa53ecSChao Yu } 34750fa53ecSChao Yu 34850fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 34950fa53ecSChao Yu { 35050fa53ecSChao Yu struct fsync_node_entry *fn; 35150fa53ecSChao Yu unsigned long flags; 35250fa53ecSChao Yu 35350fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 35450fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 35550fa53ecSChao Yu if (fn->page == page) { 35650fa53ecSChao Yu list_del(&fn->list); 35750fa53ecSChao Yu sbi->fsync_node_num--; 35850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 35950fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 36050fa53ecSChao Yu put_page(page); 36150fa53ecSChao Yu return; 36250fa53ecSChao Yu } 36350fa53ecSChao Yu } 36450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 36550fa53ecSChao Yu f2fs_bug_on(sbi, 1); 36650fa53ecSChao Yu } 36750fa53ecSChao Yu 36850fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 36950fa53ecSChao Yu { 37050fa53ecSChao Yu unsigned long flags; 37150fa53ecSChao Yu 37250fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 37350fa53ecSChao Yu sbi->fsync_seg_id = 0; 37450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 37550fa53ecSChao Yu } 37650fa53ecSChao Yu 3774d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3782dcf51abSJaegeuk Kim { 3792dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3802dcf51abSJaegeuk Kim struct nat_entry *e; 3812dcf51abSJaegeuk Kim bool need = false; 3822dcf51abSJaegeuk Kim 383b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 3842dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3852dcf51abSJaegeuk Kim if (e) { 3862dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3872dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3882dcf51abSJaegeuk Kim need = true; 3892dcf51abSJaegeuk Kim } 390b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 3912dcf51abSJaegeuk Kim return need; 3922dcf51abSJaegeuk Kim } 3932dcf51abSJaegeuk Kim 3944d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 395e05df3b1SJaegeuk Kim { 396e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 397e05df3b1SJaegeuk Kim struct nat_entry *e; 39888bd02c9SJaegeuk Kim bool is_cp = true; 399e05df3b1SJaegeuk Kim 400b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 401e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 4027ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 40388bd02c9SJaegeuk Kim is_cp = false; 404b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 405e05df3b1SJaegeuk Kim return is_cp; 406e05df3b1SJaegeuk Kim } 407e05df3b1SJaegeuk Kim 4084d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 409b6fe5873SJaegeuk Kim { 410b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 411b6fe5873SJaegeuk Kim struct nat_entry *e; 41288bd02c9SJaegeuk Kim bool need_update = true; 413b6fe5873SJaegeuk Kim 414b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 41588bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 41688bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 41788bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 41888bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 41988bd02c9SJaegeuk Kim need_update = false; 420b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 42188bd02c9SJaegeuk Kim return need_update; 422b6fe5873SJaegeuk Kim } 423b6fe5873SJaegeuk Kim 42412f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4251515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 426e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 427e05df3b1SJaegeuk Kim { 4281515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 42912f9ef37SYunlei He struct nat_entry *new, *e; 4309be32d72SJaegeuk Kim 43112f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 43212f9ef37SYunlei He if (!new) 43312f9ef37SYunlei He return; 43412f9ef37SYunlei He 43512f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 436e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 43712f9ef37SYunlei He if (!e) 43812f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 43912f9ef37SYunlei He else 4400c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4410c0b471eSEric Biggers nat_get_blkaddr(e) != 4420c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4431515aef0SChao Yu nat_get_version(e) != ne->version); 44412f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 44512f9ef37SYunlei He if (e != new) 44612f9ef37SYunlei He __free_nat_entry(new); 447e05df3b1SJaegeuk Kim } 448e05df3b1SJaegeuk Kim 449e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 450479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 451e05df3b1SJaegeuk Kim { 452e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 453e05df3b1SJaegeuk Kim struct nat_entry *e; 45412f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 4559be32d72SJaegeuk Kim 456b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 457e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 458e05df3b1SJaegeuk Kim if (!e) { 45912f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4605c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4619850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 462e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 463e05df3b1SJaegeuk Kim /* 464e05df3b1SJaegeuk Kim * when nid is reallocated, 465e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 466e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 467e05df3b1SJaegeuk Kim */ 4685c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4699850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 470e05df3b1SJaegeuk Kim } 47112f9ef37SYunlei He /* let's free early to reduce memory consumption */ 47212f9ef37SYunlei He if (e != new) 47312f9ef37SYunlei He __free_nat_entry(new); 474e05df3b1SJaegeuk Kim 475e05df3b1SJaegeuk Kim /* sanity check */ 4769850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4779850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 478e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4799850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 480e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 48193770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 482e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 483e05df3b1SJaegeuk Kim 484e1c42045Sarter97 /* increment version no as node is removed */ 485e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 486e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 4875f029c04SYi Zhuang 488e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 489e05df3b1SJaegeuk Kim } 490e05df3b1SJaegeuk Kim 491e05df3b1SJaegeuk Kim /* change address */ 492e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 49393770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 49488bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 495e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 496479f40c4SJaegeuk Kim 497479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 498d5b692b7SChao Yu if (ni->nid != ni->ino) 499479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 50088bd02c9SJaegeuk Kim if (e) { 50188bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 50288bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 50388bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 50488bd02c9SJaegeuk Kim } 505b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 506e05df3b1SJaegeuk Kim } 507e05df3b1SJaegeuk Kim 5084d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 509e05df3b1SJaegeuk Kim { 510e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 5111b38dc8eSJaegeuk Kim int nr = nr_shrink; 512e05df3b1SJaegeuk Kim 513b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 514b873b798SJaegeuk Kim return 0; 515e05df3b1SJaegeuk Kim 51622969158SChao Yu spin_lock(&nm_i->nat_list_lock); 51722969158SChao Yu while (nr_shrink) { 518e05df3b1SJaegeuk Kim struct nat_entry *ne; 51922969158SChao Yu 52022969158SChao Yu if (list_empty(&nm_i->nat_entries)) 52122969158SChao Yu break; 52222969158SChao Yu 523e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 524e05df3b1SJaegeuk Kim struct nat_entry, list); 52522969158SChao Yu list_del(&ne->list); 52622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 52722969158SChao Yu 528e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 529e05df3b1SJaegeuk Kim nr_shrink--; 53022969158SChao Yu 53122969158SChao Yu spin_lock(&nm_i->nat_list_lock); 532e05df3b1SJaegeuk Kim } 53322969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 53422969158SChao Yu 535b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 5361b38dc8eSJaegeuk Kim return nr - nr_shrink; 537e05df3b1SJaegeuk Kim } 538e05df3b1SJaegeuk Kim 5397735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 5404d57b86dSChao Yu struct node_info *ni) 541e05df3b1SJaegeuk Kim { 542e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 543e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 544b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 545e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 546e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 547e05df3b1SJaegeuk Kim struct page *page = NULL; 548e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 549e05df3b1SJaegeuk Kim struct nat_entry *e; 55066a82d1fSYunlei He pgoff_t index; 55193770ab7SChao Yu block_t blkaddr; 552e05df3b1SJaegeuk Kim int i; 553e05df3b1SJaegeuk Kim 554e05df3b1SJaegeuk Kim ni->nid = nid; 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim /* Check nat cache */ 557b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 558e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 559e05df3b1SJaegeuk Kim if (e) { 560e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 561e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 562e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 563b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5647735730dSChao Yu return 0; 5651515aef0SChao Yu } 566e05df3b1SJaegeuk Kim 5673547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 5683547ea96SJaegeuk Kim 569e05df3b1SJaegeuk Kim /* Check current segment summary */ 570b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5714d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 572e05df3b1SJaegeuk Kim if (i >= 0) { 573dfc08a12SChao Yu ne = nat_in_journal(journal, i); 574e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 575e05df3b1SJaegeuk Kim } 576b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 57766a82d1fSYunlei He if (i >= 0) { 57866a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 579e05df3b1SJaegeuk Kim goto cache; 58066a82d1fSYunlei He } 581e05df3b1SJaegeuk Kim 582e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 58366a82d1fSYunlei He index = current_nat_addr(sbi, nid); 58466a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 58566a82d1fSYunlei He 5864d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5877735730dSChao Yu if (IS_ERR(page)) 5887735730dSChao Yu return PTR_ERR(page); 5897735730dSChao Yu 590e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 591e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 592e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 593e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 594e05df3b1SJaegeuk Kim cache: 59593770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 59693770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 59793770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 59893770ab7SChao Yu return -EFAULT; 59993770ab7SChao Yu 600e05df3b1SJaegeuk Kim /* cache nat entry */ 6011515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 6027735730dSChao Yu return 0; 603e05df3b1SJaegeuk Kim } 604e05df3b1SJaegeuk Kim 60579344efbSJaegeuk Kim /* 60679344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 60779344efbSJaegeuk Kim */ 6084d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 60979344efbSJaegeuk Kim { 61079344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 61179344efbSJaegeuk Kim struct blk_plug plug; 61279344efbSJaegeuk Kim int i, end; 61379344efbSJaegeuk Kim nid_t nid; 61479344efbSJaegeuk Kim 61579344efbSJaegeuk Kim blk_start_plug(&plug); 61679344efbSJaegeuk Kim 61779344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 61879344efbSJaegeuk Kim end = start + n; 61979344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 62079344efbSJaegeuk Kim for (i = start; i < end; i++) { 62179344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6224d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 62379344efbSJaegeuk Kim } 62479344efbSJaegeuk Kim 62579344efbSJaegeuk Kim blk_finish_plug(&plug); 62679344efbSJaegeuk Kim } 62779344efbSJaegeuk Kim 6284d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6293cf45747SChao Yu { 6303cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 631d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 632d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 633d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6343cf45747SChao Yu int cur_level = dn->cur_level; 6353cf45747SChao Yu int max_level = dn->max_level; 6363cf45747SChao Yu pgoff_t base = 0; 6373cf45747SChao Yu 6383cf45747SChao Yu if (!dn->max_level) 6393cf45747SChao Yu return pgofs + 1; 6403cf45747SChao Yu 6413cf45747SChao Yu while (max_level-- > cur_level) 6423cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6433cf45747SChao Yu 6443cf45747SChao Yu switch (dn->max_level) { 6453cf45747SChao Yu case 3: 6463cf45747SChao Yu base += 2 * indirect_blks; 647df561f66SGustavo A. R. Silva fallthrough; 6483cf45747SChao Yu case 2: 6493cf45747SChao Yu base += 2 * direct_blks; 650df561f66SGustavo A. R. Silva fallthrough; 6513cf45747SChao Yu case 1: 6523cf45747SChao Yu base += direct_index; 6533cf45747SChao Yu break; 6543cf45747SChao Yu default: 6553cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6563cf45747SChao Yu } 6573cf45747SChao Yu 6583cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6593cf45747SChao Yu } 6603cf45747SChao Yu 6610a8165d7SJaegeuk Kim /* 662e05df3b1SJaegeuk Kim * The maximum depth is four. 663e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 664e05df3b1SJaegeuk Kim */ 66581ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 666de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 667e05df3b1SJaegeuk Kim { 66881ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 669d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 670e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 671d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 672e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 673e05df3b1SJaegeuk Kim int n = 0; 674e05df3b1SJaegeuk Kim int level = 0; 675e05df3b1SJaegeuk Kim 676e05df3b1SJaegeuk Kim noffset[0] = 0; 677e05df3b1SJaegeuk Kim 678e05df3b1SJaegeuk Kim if (block < direct_index) { 67925c0a6e5SNamjae Jeon offset[n] = block; 680e05df3b1SJaegeuk Kim goto got; 681e05df3b1SJaegeuk Kim } 682e05df3b1SJaegeuk Kim block -= direct_index; 683e05df3b1SJaegeuk Kim if (block < direct_blks) { 684e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 685e05df3b1SJaegeuk Kim noffset[n] = 1; 68625c0a6e5SNamjae Jeon offset[n] = block; 687e05df3b1SJaegeuk Kim level = 1; 688e05df3b1SJaegeuk Kim goto got; 689e05df3b1SJaegeuk Kim } 690e05df3b1SJaegeuk Kim block -= direct_blks; 691e05df3b1SJaegeuk Kim if (block < direct_blks) { 692e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 693e05df3b1SJaegeuk Kim noffset[n] = 2; 69425c0a6e5SNamjae Jeon offset[n] = block; 695e05df3b1SJaegeuk Kim level = 1; 696e05df3b1SJaegeuk Kim goto got; 697e05df3b1SJaegeuk Kim } 698e05df3b1SJaegeuk Kim block -= direct_blks; 699e05df3b1SJaegeuk Kim if (block < indirect_blks) { 700e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 701e05df3b1SJaegeuk Kim noffset[n] = 3; 702e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 703e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 70425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 705e05df3b1SJaegeuk Kim level = 2; 706e05df3b1SJaegeuk Kim goto got; 707e05df3b1SJaegeuk Kim } 708e05df3b1SJaegeuk Kim block -= indirect_blks; 709e05df3b1SJaegeuk Kim if (block < indirect_blks) { 710e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 711e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 712e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 713e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 71425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 715e05df3b1SJaegeuk Kim level = 2; 716e05df3b1SJaegeuk Kim goto got; 717e05df3b1SJaegeuk Kim } 718e05df3b1SJaegeuk Kim block -= indirect_blks; 719e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 720e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 721e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 722e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 723e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 724e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 725e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 726e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 727e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 728e05df3b1SJaegeuk Kim offset[n - 1]; 72925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 730e05df3b1SJaegeuk Kim level = 3; 731e05df3b1SJaegeuk Kim goto got; 732e05df3b1SJaegeuk Kim } else { 733adb6dc19SJaegeuk Kim return -E2BIG; 734e05df3b1SJaegeuk Kim } 735e05df3b1SJaegeuk Kim got: 736e05df3b1SJaegeuk Kim return level; 737e05df3b1SJaegeuk Kim } 738e05df3b1SJaegeuk Kim 739e05df3b1SJaegeuk Kim /* 740e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7414f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7427a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 743e05df3b1SJaegeuk Kim */ 7444d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 745e05df3b1SJaegeuk Kim { 7464081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 747e05df3b1SJaegeuk Kim struct page *npage[4]; 748f1a3b98eSJaegeuk Kim struct page *parent = NULL; 749e05df3b1SJaegeuk Kim int offset[4]; 750e05df3b1SJaegeuk Kim unsigned int noffset[4]; 751e05df3b1SJaegeuk Kim nid_t nids[4]; 7523cf45747SChao Yu int level, i = 0; 753e05df3b1SJaegeuk Kim int err = 0; 754e05df3b1SJaegeuk Kim 75581ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 756adb6dc19SJaegeuk Kim if (level < 0) 757adb6dc19SJaegeuk Kim return level; 758e05df3b1SJaegeuk Kim 759e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7601646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7611646cfacSJaegeuk Kim 7621646cfacSJaegeuk Kim if (!npage[0]) { 7634d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 764e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 765e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7661646cfacSJaegeuk Kim } 767f1a3b98eSJaegeuk Kim 768f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 769f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 77076629165SJaegeuk Kim err = -ENOENT; 771f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 772f1a3b98eSJaegeuk Kim goto release_out; 773f1a3b98eSJaegeuk Kim } 774f1a3b98eSJaegeuk Kim 775e05df3b1SJaegeuk Kim parent = npage[0]; 77652c2db3fSChangman Lee if (level != 0) 777e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 778e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 779e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 780e05df3b1SJaegeuk Kim 781e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 782e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 783e05df3b1SJaegeuk Kim bool done = false; 784e05df3b1SJaegeuk Kim 785266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 786e05df3b1SJaegeuk Kim /* alloc new node */ 7874d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 788e05df3b1SJaegeuk Kim err = -ENOSPC; 789e05df3b1SJaegeuk Kim goto release_pages; 790e05df3b1SJaegeuk Kim } 791e05df3b1SJaegeuk Kim 792e05df3b1SJaegeuk Kim dn->nid = nids[i]; 7934d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 794e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 7954d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 796e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 797e05df3b1SJaegeuk Kim goto release_pages; 798e05df3b1SJaegeuk Kim } 799e05df3b1SJaegeuk Kim 800e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 8014d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 802e05df3b1SJaegeuk Kim done = true; 803266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 8044d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 805e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 806e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 807e05df3b1SJaegeuk Kim goto release_pages; 808e05df3b1SJaegeuk Kim } 809e05df3b1SJaegeuk Kim done = true; 810e05df3b1SJaegeuk Kim } 811e05df3b1SJaegeuk Kim if (i == 1) { 812e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 813e05df3b1SJaegeuk Kim unlock_page(parent); 814e05df3b1SJaegeuk Kim } else { 815e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 816e05df3b1SJaegeuk Kim } 817e05df3b1SJaegeuk Kim 818e05df3b1SJaegeuk Kim if (!done) { 8194d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 820e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 821e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 822e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 823e05df3b1SJaegeuk Kim goto release_out; 824e05df3b1SJaegeuk Kim } 825e05df3b1SJaegeuk Kim } 826e05df3b1SJaegeuk Kim if (i < level) { 827e05df3b1SJaegeuk Kim parent = npage[i]; 828e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 829e05df3b1SJaegeuk Kim } 830e05df3b1SJaegeuk Kim } 831e05df3b1SJaegeuk Kim dn->nid = nids[level]; 832e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 833e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 834a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 835e05df3b1SJaegeuk Kim return 0; 836e05df3b1SJaegeuk Kim 837e05df3b1SJaegeuk Kim release_pages: 838e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 839e05df3b1SJaegeuk Kim if (i > 1) 840e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 841e05df3b1SJaegeuk Kim release_out: 842e05df3b1SJaegeuk Kim dn->inode_page = NULL; 843e05df3b1SJaegeuk Kim dn->node_page = NULL; 8443cf45747SChao Yu if (err == -ENOENT) { 8453cf45747SChao Yu dn->cur_level = i; 8463cf45747SChao Yu dn->max_level = level; 8470a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8483cf45747SChao Yu } 849e05df3b1SJaegeuk Kim return err; 850e05df3b1SJaegeuk Kim } 851e05df3b1SJaegeuk Kim 8527735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 853e05df3b1SJaegeuk Kim { 8544081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 855e05df3b1SJaegeuk Kim struct node_info ni; 8567735730dSChao Yu int err; 8570ea295ddSPan Bian pgoff_t index; 858e05df3b1SJaegeuk Kim 8597735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8607735730dSChao Yu if (err) 8617735730dSChao Yu return err; 862e05df3b1SJaegeuk Kim 863e05df3b1SJaegeuk Kim /* Deallocate node address */ 8644d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 865000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 866479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 867e05df3b1SJaegeuk Kim 868e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 8694d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 870e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 8710f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 872e05df3b1SJaegeuk Kim } 873000519f2SChao Yu 874e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 875caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 876e05df3b1SJaegeuk Kim 8770ea295ddSPan Bian index = dn->node_page->index; 878e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 879bf39c00aSJaegeuk Kim 880bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 8810ea295ddSPan Bian index, index); 882bf39c00aSJaegeuk Kim 883e05df3b1SJaegeuk Kim dn->node_page = NULL; 88451dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 8857735730dSChao Yu 8867735730dSChao Yu return 0; 887e05df3b1SJaegeuk Kim } 888e05df3b1SJaegeuk Kim 889e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 890e05df3b1SJaegeuk Kim { 891e05df3b1SJaegeuk Kim struct page *page; 8927735730dSChao Yu int err; 893e05df3b1SJaegeuk Kim 894e05df3b1SJaegeuk Kim if (dn->nid == 0) 895e05df3b1SJaegeuk Kim return 1; 896e05df3b1SJaegeuk Kim 897e05df3b1SJaegeuk Kim /* get direct node */ 8984d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 89945586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 900e05df3b1SJaegeuk Kim return 1; 901e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 902e05df3b1SJaegeuk Kim return PTR_ERR(page); 903e05df3b1SJaegeuk Kim 904e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 905e05df3b1SJaegeuk Kim dn->node_page = page; 906e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 9074d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 9087735730dSChao Yu err = truncate_node(dn); 9097735730dSChao Yu if (err) 9107735730dSChao Yu return err; 9117735730dSChao Yu 912e05df3b1SJaegeuk Kim return 1; 913e05df3b1SJaegeuk Kim } 914e05df3b1SJaegeuk Kim 915e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 916e05df3b1SJaegeuk Kim int ofs, int depth) 917e05df3b1SJaegeuk Kim { 918e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 919e05df3b1SJaegeuk Kim struct page *page; 920e05df3b1SJaegeuk Kim struct f2fs_node *rn; 921e05df3b1SJaegeuk Kim nid_t child_nid; 922e05df3b1SJaegeuk Kim unsigned int child_nofs; 923e05df3b1SJaegeuk Kim int freed = 0; 924e05df3b1SJaegeuk Kim int i, ret; 925e05df3b1SJaegeuk Kim 926e05df3b1SJaegeuk Kim if (dn->nid == 0) 927e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 928e05df3b1SJaegeuk Kim 92951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 93051dd6249SNamjae Jeon 9314d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 93251dd6249SNamjae Jeon if (IS_ERR(page)) { 93351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 934e05df3b1SJaegeuk Kim return PTR_ERR(page); 93551dd6249SNamjae Jeon } 936e05df3b1SJaegeuk Kim 9374d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 93879344efbSJaegeuk Kim 93945590710SGu Zheng rn = F2FS_NODE(page); 940e05df3b1SJaegeuk Kim if (depth < 3) { 941e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 942e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 943e05df3b1SJaegeuk Kim if (child_nid == 0) 944e05df3b1SJaegeuk Kim continue; 945e05df3b1SJaegeuk Kim rdn.nid = child_nid; 946e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 947e05df3b1SJaegeuk Kim if (ret < 0) 948e05df3b1SJaegeuk Kim goto out_err; 94912719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 95093bae099SJaegeuk Kim dn->node_changed = true; 951e05df3b1SJaegeuk Kim } 952e05df3b1SJaegeuk Kim } else { 953e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 954e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 955e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 956e05df3b1SJaegeuk Kim if (child_nid == 0) { 957e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 958e05df3b1SJaegeuk Kim continue; 959e05df3b1SJaegeuk Kim } 960e05df3b1SJaegeuk Kim rdn.nid = child_nid; 961e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 962e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 96312719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 96493bae099SJaegeuk Kim dn->node_changed = true; 965e05df3b1SJaegeuk Kim child_nofs += ret; 966e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 967e05df3b1SJaegeuk Kim goto out_err; 968e05df3b1SJaegeuk Kim } 969e05df3b1SJaegeuk Kim } 970e05df3b1SJaegeuk Kim freed = child_nofs; 971e05df3b1SJaegeuk Kim } 972e05df3b1SJaegeuk Kim 973e05df3b1SJaegeuk Kim if (!ofs) { 974e05df3b1SJaegeuk Kim /* remove current indirect node */ 975e05df3b1SJaegeuk Kim dn->node_page = page; 9767735730dSChao Yu ret = truncate_node(dn); 9777735730dSChao Yu if (ret) 9787735730dSChao Yu goto out_err; 979e05df3b1SJaegeuk Kim freed++; 980e05df3b1SJaegeuk Kim } else { 981e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 982e05df3b1SJaegeuk Kim } 98351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 984e05df3b1SJaegeuk Kim return freed; 985e05df3b1SJaegeuk Kim 986e05df3b1SJaegeuk Kim out_err: 987e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 98851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 989e05df3b1SJaegeuk Kim return ret; 990e05df3b1SJaegeuk Kim } 991e05df3b1SJaegeuk Kim 992e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 993e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 994e05df3b1SJaegeuk Kim { 995e05df3b1SJaegeuk Kim struct page *pages[2]; 996e05df3b1SJaegeuk Kim nid_t nid[3]; 997e05df3b1SJaegeuk Kim nid_t child_nid; 998e05df3b1SJaegeuk Kim int err = 0; 999e05df3b1SJaegeuk Kim int i; 1000e05df3b1SJaegeuk Kim int idx = depth - 2; 1001e05df3b1SJaegeuk Kim 1002e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1003e05df3b1SJaegeuk Kim if (!nid[0]) 1004e05df3b1SJaegeuk Kim return 0; 1005e05df3b1SJaegeuk Kim 1006e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 1007a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 1008e1c42045Sarter97 /* reference count'll be increased */ 10094d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 1010e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 1011e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 1012a225dca3Sshifei10.ge idx = i - 1; 1013e05df3b1SJaegeuk Kim goto fail; 1014e05df3b1SJaegeuk Kim } 1015e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 1016e05df3b1SJaegeuk Kim } 1017e05df3b1SJaegeuk Kim 10184d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 101979344efbSJaegeuk Kim 1020e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1021a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1022e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1023e05df3b1SJaegeuk Kim if (!child_nid) 1024e05df3b1SJaegeuk Kim continue; 1025e05df3b1SJaegeuk Kim dn->nid = child_nid; 1026e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1027e05df3b1SJaegeuk Kim if (err < 0) 1028e05df3b1SJaegeuk Kim goto fail; 102912719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 103093bae099SJaegeuk Kim dn->node_changed = true; 1031e05df3b1SJaegeuk Kim } 1032e05df3b1SJaegeuk Kim 1033a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1034e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1035e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10367735730dSChao Yu err = truncate_node(dn); 10377735730dSChao Yu if (err) 10387735730dSChao Yu goto fail; 1039e05df3b1SJaegeuk Kim } else { 1040e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1041e05df3b1SJaegeuk Kim } 1042e05df3b1SJaegeuk Kim offset[idx]++; 1043a225dca3Sshifei10.ge offset[idx + 1] = 0; 1044a225dca3Sshifei10.ge idx--; 1045e05df3b1SJaegeuk Kim fail: 1046a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1047e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 104851dd6249SNamjae Jeon 104951dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 105051dd6249SNamjae Jeon 1051e05df3b1SJaegeuk Kim return err; 1052e05df3b1SJaegeuk Kim } 1053e05df3b1SJaegeuk Kim 10540a8165d7SJaegeuk Kim /* 1055e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1056e05df3b1SJaegeuk Kim */ 10574d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1058e05df3b1SJaegeuk Kim { 10594081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1060e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1061e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10627dd690c8SJaegeuk Kim unsigned int nofs = 0; 106358bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1064e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1065e05df3b1SJaegeuk Kim struct page *page; 1066e05df3b1SJaegeuk Kim 106751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 106851dd6249SNamjae Jeon 106981ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 10709039d835SYubo Feng if (level < 0) { 10719039d835SYubo Feng trace_f2fs_truncate_inode_blocks_exit(inode, level); 1072adb6dc19SJaegeuk Kim return level; 10739039d835SYubo Feng } 1074ff373558SJaegeuk Kim 10754d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 107651dd6249SNamjae Jeon if (IS_ERR(page)) { 107751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1078e05df3b1SJaegeuk Kim return PTR_ERR(page); 107951dd6249SNamjae Jeon } 1080e05df3b1SJaegeuk Kim 1081e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1082e05df3b1SJaegeuk Kim unlock_page(page); 1083e05df3b1SJaegeuk Kim 108458bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1085e05df3b1SJaegeuk Kim switch (level) { 1086e05df3b1SJaegeuk Kim case 0: 1087e05df3b1SJaegeuk Kim case 1: 1088e05df3b1SJaegeuk Kim nofs = noffset[1]; 1089e05df3b1SJaegeuk Kim break; 1090e05df3b1SJaegeuk Kim case 2: 1091e05df3b1SJaegeuk Kim nofs = noffset[1]; 1092e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1093e05df3b1SJaegeuk Kim goto skip_partial; 109458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1095e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1096e05df3b1SJaegeuk Kim goto fail; 1097e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1098e05df3b1SJaegeuk Kim break; 1099e05df3b1SJaegeuk Kim case 3: 1100e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1101e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1102e05df3b1SJaegeuk Kim goto skip_partial; 110358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1104e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1105e05df3b1SJaegeuk Kim goto fail; 1106e05df3b1SJaegeuk Kim break; 1107e05df3b1SJaegeuk Kim default: 1108e05df3b1SJaegeuk Kim BUG(); 1109e05df3b1SJaegeuk Kim } 1110e05df3b1SJaegeuk Kim 1111e05df3b1SJaegeuk Kim skip_partial: 1112e05df3b1SJaegeuk Kim while (cont) { 111358bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1114e05df3b1SJaegeuk Kim switch (offset[0]) { 1115e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1116e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1117e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1118e05df3b1SJaegeuk Kim break; 1119e05df3b1SJaegeuk Kim 1120e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1121e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1122e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1123e05df3b1SJaegeuk Kim break; 1124e05df3b1SJaegeuk Kim 1125e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1126e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1127e05df3b1SJaegeuk Kim cont = 0; 1128e05df3b1SJaegeuk Kim break; 1129e05df3b1SJaegeuk Kim 1130e05df3b1SJaegeuk Kim default: 1131e05df3b1SJaegeuk Kim BUG(); 1132e05df3b1SJaegeuk Kim } 1133e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1134e05df3b1SJaegeuk Kim goto fail; 1135e05df3b1SJaegeuk Kim if (offset[1] == 0 && 113658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1137e05df3b1SJaegeuk Kim lock_page(page); 1138ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1139bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 114058bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1141e05df3b1SJaegeuk Kim set_page_dirty(page); 1142e05df3b1SJaegeuk Kim unlock_page(page); 1143e05df3b1SJaegeuk Kim } 1144e05df3b1SJaegeuk Kim offset[1] = 0; 1145e05df3b1SJaegeuk Kim offset[0]++; 1146e05df3b1SJaegeuk Kim nofs += err; 1147e05df3b1SJaegeuk Kim } 1148e05df3b1SJaegeuk Kim fail: 1149e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 115051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1151e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1152e05df3b1SJaegeuk Kim } 1153e05df3b1SJaegeuk Kim 11549c77f754SJaegeuk Kim /* caller must lock inode page */ 11554d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11564f16fb0fSJaegeuk Kim { 11574081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11584f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11594f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11604f16fb0fSJaegeuk Kim struct page *npage; 11617735730dSChao Yu int err; 11624f16fb0fSJaegeuk Kim 11634f16fb0fSJaegeuk Kim if (!nid) 11644f16fb0fSJaegeuk Kim return 0; 11654f16fb0fSJaegeuk Kim 11664d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11674f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11684f16fb0fSJaegeuk Kim return PTR_ERR(npage); 11694f16fb0fSJaegeuk Kim 11707735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 11717735730dSChao Yu err = truncate_node(&dn); 11727735730dSChao Yu if (err) { 11737735730dSChao Yu f2fs_put_page(npage, 1); 11747735730dSChao Yu return err; 11757735730dSChao Yu } 11767735730dSChao Yu 1177205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 117865985d93SJaegeuk Kim 11794f16fb0fSJaegeuk Kim return 0; 11804f16fb0fSJaegeuk Kim } 11814f16fb0fSJaegeuk Kim 118239936837SJaegeuk Kim /* 11834f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 11844f4124d0SChao Yu * f2fs_unlock_op(). 118539936837SJaegeuk Kim */ 11864d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1187e05df3b1SJaegeuk Kim { 1188e05df3b1SJaegeuk Kim struct dnode_of_data dn; 118913ec7297SChao Yu int err; 1190e05df3b1SJaegeuk Kim 1191c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 11924d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 119313ec7297SChao Yu if (err) 119413ec7297SChao Yu return err; 1195e05df3b1SJaegeuk Kim 11964d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 119713ec7297SChao Yu if (err) { 1198c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 119913ec7297SChao Yu return err; 1200e05df3b1SJaegeuk Kim } 1201c2e69583SJaegeuk Kim 1202c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1203c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1204c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 12054d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1206c2e69583SJaegeuk Kim 1207e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 12088d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 12098d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 12108d714f8aSJaegeuk Kim return -EIO; 12118d714f8aSJaegeuk Kim } 12128b6810f8SChao Yu 12138b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1214097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1215097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1216dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 12178b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 12188b6810f8SChao Yu } 1219c2e69583SJaegeuk Kim 1220c2e69583SJaegeuk Kim /* will put inode & node pages */ 12217735730dSChao Yu err = truncate_node(&dn); 12227735730dSChao Yu if (err) { 12237735730dSChao Yu f2fs_put_dnode(&dn); 12247735730dSChao Yu return err; 12257735730dSChao Yu } 122613ec7297SChao Yu return 0; 1227e05df3b1SJaegeuk Kim } 1228e05df3b1SJaegeuk Kim 12294d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1230e05df3b1SJaegeuk Kim { 1231e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1232e05df3b1SJaegeuk Kim 1233e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1234e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 123544a83ff6SJaegeuk Kim 123644a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12374d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1238e05df3b1SJaegeuk Kim } 1239e05df3b1SJaegeuk Kim 12404d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1241e05df3b1SJaegeuk Kim { 12424081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 124325cc5d3bSJaegeuk Kim struct node_info new_ni; 1244e05df3b1SJaegeuk Kim struct page *page; 1245e05df3b1SJaegeuk Kim int err; 1246e05df3b1SJaegeuk Kim 124791942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1248e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1249e05df3b1SJaegeuk Kim 1250300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1251e05df3b1SJaegeuk Kim if (!page) 1252e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1253e05df3b1SJaegeuk Kim 12540abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12559c02740cSJaegeuk Kim goto fail; 12560abd675eSChao Yu 125725cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 12587735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 12597735730dSChao Yu if (err) { 12607735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12617735730dSChao Yu goto fail; 12627735730dSChao Yu } 126325cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 126425cc5d3bSJaegeuk Kim #endif 126525cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1266e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 126725cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 126825cc5d3bSJaegeuk Kim new_ni.flag = 0; 126925cc5d3bSJaegeuk Kim new_ni.version = 0; 1270479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 12719c02740cSJaegeuk Kim 1272bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 12739c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1274c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1275237c0790SJaegeuk Kim if (!PageUptodate(page)) 12769c02740cSJaegeuk Kim SetPageUptodate(page); 127712719ae1SJaegeuk Kim if (set_page_dirty(page)) 127812719ae1SJaegeuk Kim dn->node_changed = true; 1279e05df3b1SJaegeuk Kim 12804bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1281205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1282479bd73aSJaegeuk Kim 1283e05df3b1SJaegeuk Kim if (ofs == 0) 1284e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1285e05df3b1SJaegeuk Kim return page; 1286e05df3b1SJaegeuk Kim 1287e05df3b1SJaegeuk Kim fail: 128871e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1289e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1290e05df3b1SJaegeuk Kim return ERR_PTR(err); 1291e05df3b1SJaegeuk Kim } 1292e05df3b1SJaegeuk Kim 129356ae674cSJaegeuk Kim /* 129456ae674cSJaegeuk Kim * Caller should do after getting the following values. 129556ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 129686531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 129756ae674cSJaegeuk Kim */ 129804d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1299e05df3b1SJaegeuk Kim { 13004081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1301e05df3b1SJaegeuk Kim struct node_info ni; 1302cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 130305ca3632SJaegeuk Kim .sbi = sbi, 1304cf04e8ebSJaegeuk Kim .type = NODE, 130504d328deSMike Christie .op = REQ_OP_READ, 130604d328deSMike Christie .op_flags = op_flags, 130705ca3632SJaegeuk Kim .page = page, 13084375a336SJaegeuk Kim .encrypted_page = NULL, 1309cf04e8ebSJaegeuk Kim }; 13107735730dSChao Yu int err; 1311e05df3b1SJaegeuk Kim 131254c55c4eSWeichao Guo if (PageUptodate(page)) { 1313b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1314b42b179bSChao Yu ClearPageUptodate(page); 131510f966bbSChao Yu return -EFSBADCRC; 1316b42b179bSChao Yu } 13173bdad3c7SJaegeuk Kim return LOCKED_PAGE; 131854c55c4eSWeichao Guo } 13193bdad3c7SJaegeuk Kim 13207735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 13217735730dSChao Yu if (err) 13227735730dSChao Yu return err; 1323e05df3b1SJaegeuk Kim 132483a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 132583a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 13262bca1e23SJaegeuk Kim ClearPageUptodate(page); 1327e05df3b1SJaegeuk Kim return -ENOENT; 1328393ff91fSJaegeuk Kim } 1329393ff91fSJaegeuk Kim 13307a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 13318b83ac81SChao Yu 13328b83ac81SChao Yu err = f2fs_submit_page_bio(&fio); 13338b83ac81SChao Yu 13348b83ac81SChao Yu if (!err) 13358b83ac81SChao Yu f2fs_update_iostat(sbi, FS_NODE_READ_IO, F2FS_BLKSIZE); 13368b83ac81SChao Yu 13378b83ac81SChao Yu return err; 1338e05df3b1SJaegeuk Kim } 1339e05df3b1SJaegeuk Kim 13400a8165d7SJaegeuk Kim /* 1341e05df3b1SJaegeuk Kim * Readahead a node page 1342e05df3b1SJaegeuk Kim */ 13434d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1344e05df3b1SJaegeuk Kim { 1345e05df3b1SJaegeuk Kim struct page *apage; 134656ae674cSJaegeuk Kim int err; 1347e05df3b1SJaegeuk Kim 1348e8458725SChao Yu if (!nid) 1349e8458725SChao Yu return; 13504d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1351a4f843bdSJaegeuk Kim return; 1352e8458725SChao Yu 13535ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1354999270deSFan Li if (apage) 1355393ff91fSJaegeuk Kim return; 1356e05df3b1SJaegeuk Kim 1357300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1358e05df3b1SJaegeuk Kim if (!apage) 1359e05df3b1SJaegeuk Kim return; 1360e05df3b1SJaegeuk Kim 136170246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 136286531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1363e05df3b1SJaegeuk Kim } 1364e05df3b1SJaegeuk Kim 136517a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 13660e022ea8SChao Yu struct page *parent, int start) 1367e05df3b1SJaegeuk Kim { 136856ae674cSJaegeuk Kim struct page *page; 136956ae674cSJaegeuk Kim int err; 13704aa69d56SJaegeuk Kim 13714aa69d56SJaegeuk Kim if (!nid) 13724aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 13734d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1374a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1375afcb7ca0SJaegeuk Kim repeat: 1376300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1377e05df3b1SJaegeuk Kim if (!page) 1378e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1379e05df3b1SJaegeuk Kim 138070fd7614SChristoph Hellwig err = read_node_page(page, 0); 138186531d6bSJaegeuk Kim if (err < 0) { 138286531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1383e05df3b1SJaegeuk Kim return ERR_PTR(err); 1384e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 13851f258ec1SChao Yu err = 0; 1386e1c51b9fSChao Yu goto page_hit; 138786531d6bSJaegeuk Kim } 1388aaf96075SJaegeuk Kim 13890e022ea8SChao Yu if (parent) 13904d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 13910e022ea8SChao Yu 1392e1c51b9fSChao Yu lock_page(page); 1393e1c51b9fSChao Yu 13944ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1395afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1396afcb7ca0SJaegeuk Kim goto repeat; 1397afcb7ca0SJaegeuk Kim } 13981563ac75SChao Yu 13991f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 14001f258ec1SChao Yu err = -EIO; 14011563ac75SChao Yu goto out_err; 14021f258ec1SChao Yu } 1403704956ecSChao Yu 1404704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 140510f966bbSChao Yu err = -EFSBADCRC; 1406704956ecSChao Yu goto out_err; 1407704956ecSChao Yu } 1408e1c51b9fSChao Yu page_hit: 14090c9df7fbSYunlong Song if (unlikely(nid != nid_of_node(page))) { 1410dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 14111f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 14121f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 14131f258ec1SChao Yu next_blkaddr_of_node(page)); 14141f258ec1SChao Yu err = -EINVAL; 14150c9df7fbSYunlong Song out_err: 1416ee605234SJaegeuk Kim ClearPageUptodate(page); 14170c9df7fbSYunlong Song f2fs_put_page(page, 1); 14181f258ec1SChao Yu return ERR_PTR(err); 14190c9df7fbSYunlong Song } 1420e05df3b1SJaegeuk Kim return page; 1421e05df3b1SJaegeuk Kim } 1422e05df3b1SJaegeuk Kim 14234d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 14240e022ea8SChao Yu { 14250e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 14260e022ea8SChao Yu } 14270e022ea8SChao Yu 14284d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1429e05df3b1SJaegeuk Kim { 14304081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14310e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1432e05df3b1SJaegeuk Kim 14330e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1434e05df3b1SJaegeuk Kim } 1435e05df3b1SJaegeuk Kim 14362049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14372049d4fcSJaegeuk Kim { 14382049d4fcSJaegeuk Kim struct inode *inode; 14392049d4fcSJaegeuk Kim struct page *page; 14400f3311a8SChao Yu int ret; 14412049d4fcSJaegeuk Kim 14422049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14432049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14442049d4fcSJaegeuk Kim if (!inode) 14452049d4fcSJaegeuk Kim return; 14462049d4fcSJaegeuk Kim 144701eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 144801eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14492049d4fcSJaegeuk Kim if (!page) 14502049d4fcSJaegeuk Kim goto iput_out; 14512049d4fcSJaegeuk Kim 14522049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14532049d4fcSJaegeuk Kim goto page_out; 14542049d4fcSJaegeuk Kim 14552049d4fcSJaegeuk Kim if (!PageDirty(page)) 14562049d4fcSJaegeuk Kim goto page_out; 14572049d4fcSJaegeuk Kim 14582049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14592049d4fcSJaegeuk Kim goto page_out; 14602049d4fcSJaegeuk Kim 14610f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14622049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 14634d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 14640f3311a8SChao Yu if (ret) 14652049d4fcSJaegeuk Kim set_page_dirty(page); 14662049d4fcSJaegeuk Kim page_out: 14674a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 14682049d4fcSJaegeuk Kim iput_out: 14692049d4fcSJaegeuk Kim iput(inode); 14702049d4fcSJaegeuk Kim } 14712049d4fcSJaegeuk Kim 1472608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1473e05df3b1SJaegeuk Kim { 1474028a63a6SJan Kara pgoff_t index; 1475e05df3b1SJaegeuk Kim struct pagevec pvec; 1476608514deSJaegeuk Kim struct page *last_page = NULL; 1477028a63a6SJan Kara int nr_pages; 147852681375SJaegeuk Kim 147986679820SMel Gorman pagevec_init(&pvec); 148052681375SJaegeuk Kim index = 0; 148152681375SJaegeuk Kim 1482028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 148367fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1484028a63a6SJan Kara int i; 148552681375SJaegeuk Kim 148652681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 148752681375SJaegeuk Kim struct page *page = pvec.pages[i]; 148852681375SJaegeuk Kim 148952681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1490608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 149152681375SJaegeuk Kim pagevec_release(&pvec); 1492608514deSJaegeuk Kim return ERR_PTR(-EIO); 149352681375SJaegeuk Kim } 149452681375SJaegeuk Kim 149552681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 149652681375SJaegeuk Kim continue; 149752681375SJaegeuk Kim if (ino_of_node(page) != ino) 149852681375SJaegeuk Kim continue; 149952681375SJaegeuk Kim 150052681375SJaegeuk Kim lock_page(page); 150152681375SJaegeuk Kim 150252681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 150352681375SJaegeuk Kim continue_unlock: 150452681375SJaegeuk Kim unlock_page(page); 150552681375SJaegeuk Kim continue; 150652681375SJaegeuk Kim } 150752681375SJaegeuk Kim if (ino_of_node(page) != ino) 150852681375SJaegeuk Kim goto continue_unlock; 150952681375SJaegeuk Kim 151052681375SJaegeuk Kim if (!PageDirty(page)) { 151152681375SJaegeuk Kim /* someone wrote it for us */ 151252681375SJaegeuk Kim goto continue_unlock; 151352681375SJaegeuk Kim } 151452681375SJaegeuk Kim 1515608514deSJaegeuk Kim if (last_page) 1516608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1517608514deSJaegeuk Kim 1518608514deSJaegeuk Kim get_page(page); 1519608514deSJaegeuk Kim last_page = page; 1520608514deSJaegeuk Kim unlock_page(page); 1521608514deSJaegeuk Kim } 1522608514deSJaegeuk Kim pagevec_release(&pvec); 1523608514deSJaegeuk Kim cond_resched(); 1524608514deSJaegeuk Kim } 1525608514deSJaegeuk Kim return last_page; 1526608514deSJaegeuk Kim } 1527608514deSJaegeuk Kim 1528d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1529b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 153050fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1531faa24895SJaegeuk Kim { 1532faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1533faa24895SJaegeuk Kim nid_t nid; 1534faa24895SJaegeuk Kim struct node_info ni; 1535faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1536faa24895SJaegeuk Kim .sbi = sbi, 153739d787beSChao Yu .ino = ino_of_node(page), 1538faa24895SJaegeuk Kim .type = NODE, 1539faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1540faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1541faa24895SJaegeuk Kim .page = page, 1542faa24895SJaegeuk Kim .encrypted_page = NULL, 1543d68f735bSJaegeuk Kim .submitted = false, 1544b0af6d49SChao Yu .io_type = io_type, 1545578c6478SYufen Yu .io_wbc = wbc, 1546faa24895SJaegeuk Kim }; 154750fa53ecSChao Yu unsigned int seq; 1548faa24895SJaegeuk Kim 1549faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1550faa24895SJaegeuk Kim 15516d7c865cSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 15526d7c865cSJaegeuk Kim if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) { 15536d7c865cSJaegeuk Kim ClearPageUptodate(page); 15546d7c865cSJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 15556d7c865cSJaegeuk Kim unlock_page(page); 15566d7c865cSJaegeuk Kim return 0; 15576d7c865cSJaegeuk Kim } 1558868de613SJaegeuk Kim goto redirty_out; 15596d7c865cSJaegeuk Kim } 1560db198ae0SChao Yu 1561faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1562faa24895SJaegeuk Kim goto redirty_out; 1563faa24895SJaegeuk Kim 1564100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1565100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1566fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1567fd8c8cafSChao Yu goto redirty_out; 1568fd8c8cafSChao Yu 1569faa24895SJaegeuk Kim /* get old block addr of this node page */ 1570faa24895SJaegeuk Kim nid = nid_of_node(page); 1571faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1572faa24895SJaegeuk Kim 15737735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 15747735730dSChao Yu goto redirty_out; 15757735730dSChao Yu 1576faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1577faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1578faa24895SJaegeuk Kim goto redirty_out; 1579faa24895SJaegeuk Kim } else { 1580faa24895SJaegeuk Kim down_read(&sbi->node_write); 1581faa24895SJaegeuk Kim } 1582faa24895SJaegeuk Kim 1583faa24895SJaegeuk Kim /* This page is already truncated */ 1584faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1585faa24895SJaegeuk Kim ClearPageUptodate(page); 1586faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1587faa24895SJaegeuk Kim up_read(&sbi->node_write); 1588faa24895SJaegeuk Kim unlock_page(page); 1589faa24895SJaegeuk Kim return 0; 1590faa24895SJaegeuk Kim } 1591faa24895SJaegeuk Kim 1592c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 159393770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 159493770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 159589d13c38SJaegeuk Kim up_read(&sbi->node_write); 1596c9b60788SChao Yu goto redirty_out; 159789d13c38SJaegeuk Kim } 1598c9b60788SChao Yu 1599e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1600e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1601e7c75ab0SJaegeuk Kim 1602dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 160350fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 160450fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 160550fa53ecSChao Yu if (seq_id) 160650fa53ecSChao Yu *seq_id = seq; 160750fa53ecSChao Yu } 160850fa53ecSChao Yu 1609dc5a9412SChao Yu set_page_writeback(page); 1610dc5a9412SChao Yu ClearPageError(page); 1611dc5a9412SChao Yu 1612faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 16134d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1614faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1615faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1616faa24895SJaegeuk Kim up_read(&sbi->node_write); 1617faa24895SJaegeuk Kim 1618d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1619bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1620d68f735bSJaegeuk Kim submitted = NULL; 1621d68f735bSJaegeuk Kim } 1622faa24895SJaegeuk Kim 1623faa24895SJaegeuk Kim unlock_page(page); 1624faa24895SJaegeuk Kim 1625d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1626b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1627d68f735bSJaegeuk Kim submitted = NULL; 1628d68f735bSJaegeuk Kim } 1629d68f735bSJaegeuk Kim if (submitted) 1630d68f735bSJaegeuk Kim *submitted = fio.submitted; 1631faa24895SJaegeuk Kim 1632401db79fSYunlong Song if (do_balance) 1633401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1634faa24895SJaegeuk Kim return 0; 1635faa24895SJaegeuk Kim 1636faa24895SJaegeuk Kim redirty_out: 1637faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1638faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1639faa24895SJaegeuk Kim } 1640faa24895SJaegeuk Kim 164148018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1642f15194fcSYunlei He { 164348018b4cSChao Yu int err = 0; 164448018b4cSChao Yu 1645f15194fcSYunlei He if (gc_type == FG_GC) { 1646f15194fcSYunlei He struct writeback_control wbc = { 1647f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1648f15194fcSYunlei He .nr_to_write = 1, 1649f15194fcSYunlei He .for_reclaim = 0, 1650f15194fcSYunlei He }; 1651f15194fcSYunlei He 1652bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16538d64d365SChao Yu 16548d64d365SChao Yu set_page_dirty(node_page); 16558d64d365SChao Yu 165648018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 165748018b4cSChao Yu err = -EAGAIN; 1658f15194fcSYunlei He goto out_page; 165948018b4cSChao Yu } 1660f15194fcSYunlei He 1661f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 166248018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 166348018b4cSChao Yu err = -EAGAIN; 1664f15194fcSYunlei He unlock_page(node_page); 166548018b4cSChao Yu } 1666f15194fcSYunlei He goto release_page; 1667f15194fcSYunlei He } else { 1668f15194fcSYunlei He /* set page dirty and write it */ 1669f15194fcSYunlei He if (!PageWriteback(node_page)) 1670f15194fcSYunlei He set_page_dirty(node_page); 1671f15194fcSYunlei He } 1672f15194fcSYunlei He out_page: 1673f15194fcSYunlei He unlock_page(node_page); 1674f15194fcSYunlei He release_page: 1675f15194fcSYunlei He f2fs_put_page(node_page, 0); 167648018b4cSChao Yu return err; 1677f15194fcSYunlei He } 1678f15194fcSYunlei He 1679faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1680faa24895SJaegeuk Kim struct writeback_control *wbc) 1681faa24895SJaegeuk Kim { 168250fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 168350fa53ecSChao Yu FS_NODE_IO, NULL); 1684faa24895SJaegeuk Kim } 1685faa24895SJaegeuk Kim 16864d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 168750fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 168850fa53ecSChao Yu unsigned int *seq_id) 1689608514deSJaegeuk Kim { 1690028a63a6SJan Kara pgoff_t index; 1691608514deSJaegeuk Kim struct pagevec pvec; 1692608514deSJaegeuk Kim int ret = 0; 1693608514deSJaegeuk Kim struct page *last_page = NULL; 1694608514deSJaegeuk Kim bool marked = false; 169526de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1696028a63a6SJan Kara int nr_pages; 1697bab475c5SChao Yu int nwritten = 0; 1698608514deSJaegeuk Kim 1699608514deSJaegeuk Kim if (atomic) { 1700608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1701608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1702608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1703608514deSJaegeuk Kim } 1704608514deSJaegeuk Kim retry: 170586679820SMel Gorman pagevec_init(&pvec); 1706608514deSJaegeuk Kim index = 0; 1707608514deSJaegeuk Kim 1708028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 170967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1710028a63a6SJan Kara int i; 1711608514deSJaegeuk Kim 1712608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1713608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1714d68f735bSJaegeuk Kim bool submitted = false; 1715608514deSJaegeuk Kim 1716608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1717608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1718608514deSJaegeuk Kim pagevec_release(&pvec); 17199de69279SChao Yu ret = -EIO; 17209de69279SChao Yu goto out; 1721608514deSJaegeuk Kim } 1722608514deSJaegeuk Kim 1723608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1724608514deSJaegeuk Kim continue; 1725608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1726608514deSJaegeuk Kim continue; 1727608514deSJaegeuk Kim 1728608514deSJaegeuk Kim lock_page(page); 1729608514deSJaegeuk Kim 1730608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1731608514deSJaegeuk Kim continue_unlock: 1732608514deSJaegeuk Kim unlock_page(page); 1733608514deSJaegeuk Kim continue; 1734608514deSJaegeuk Kim } 1735608514deSJaegeuk Kim if (ino_of_node(page) != ino) 173652681375SJaegeuk Kim goto continue_unlock; 173752681375SJaegeuk Kim 1738608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1739608514deSJaegeuk Kim /* someone wrote it for us */ 1740608514deSJaegeuk Kim goto continue_unlock; 1741608514deSJaegeuk Kim } 1742608514deSJaegeuk Kim 1743bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1744608514deSJaegeuk Kim 1745d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1746d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1747d29fd172SJaegeuk Kim 1748608514deSJaegeuk Kim if (!atomic || page == last_page) { 174952681375SJaegeuk Kim set_fsync_mark(page, 1); 175026de9b11SJaegeuk Kim if (IS_INODE(page)) { 175126de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 175226de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17534d57b86dSChao Yu f2fs_update_inode(inode, page); 175452681375SJaegeuk Kim set_dentry_mark(page, 17554d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 175626de9b11SJaegeuk Kim } 1757608514deSJaegeuk Kim /* may be written by other thread */ 1758608514deSJaegeuk Kim if (!PageDirty(page)) 1759608514deSJaegeuk Kim set_page_dirty(page); 1760608514deSJaegeuk Kim } 1761608514deSJaegeuk Kim 1762608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1763608514deSJaegeuk Kim goto continue_unlock; 176452681375SJaegeuk Kim 1765e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1766d68f735bSJaegeuk Kim page == last_page, 1767b0af6d49SChao Yu &submitted, wbc, true, 176850fa53ecSChao Yu FS_NODE_IO, seq_id); 1769c267ec15SJaegeuk Kim if (ret) { 177052681375SJaegeuk Kim unlock_page(page); 1771608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1772608514deSJaegeuk Kim break; 1773d68f735bSJaegeuk Kim } else if (submitted) { 1774bab475c5SChao Yu nwritten++; 1775608514deSJaegeuk Kim } 17763f5f4959SChao Yu 1777608514deSJaegeuk Kim if (page == last_page) { 1778608514deSJaegeuk Kim f2fs_put_page(page, 0); 1779608514deSJaegeuk Kim marked = true; 178052681375SJaegeuk Kim break; 178152681375SJaegeuk Kim } 1782c267ec15SJaegeuk Kim } 178352681375SJaegeuk Kim pagevec_release(&pvec); 178452681375SJaegeuk Kim cond_resched(); 178552681375SJaegeuk Kim 1786608514deSJaegeuk Kim if (ret || marked) 178752681375SJaegeuk Kim break; 178852681375SJaegeuk Kim } 1789608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1790dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1791608514deSJaegeuk Kim ino, last_page->index); 1792608514deSJaegeuk Kim lock_page(last_page); 1793bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1794608514deSJaegeuk Kim set_page_dirty(last_page); 1795608514deSJaegeuk Kim unlock_page(last_page); 1796608514deSJaegeuk Kim goto retry; 1797608514deSJaegeuk Kim } 17989de69279SChao Yu out: 1799bab475c5SChao Yu if (nwritten) 1800bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1801c267ec15SJaegeuk Kim return ret ? -EIO : 0; 180252681375SJaegeuk Kim } 180352681375SJaegeuk Kim 1804052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1805052a82d8SChao Yu { 1806052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1807052a82d8SChao Yu bool clean; 1808052a82d8SChao Yu 1809052a82d8SChao Yu if (inode->i_ino != ino) 1810052a82d8SChao Yu return 0; 1811052a82d8SChao Yu 1812052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1813052a82d8SChao Yu return 0; 1814052a82d8SChao Yu 1815052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1816052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1817052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1818052a82d8SChao Yu 1819052a82d8SChao Yu if (clean) 1820052a82d8SChao Yu return 0; 1821052a82d8SChao Yu 1822052a82d8SChao Yu inode = igrab(inode); 1823052a82d8SChao Yu if (!inode) 1824052a82d8SChao Yu return 0; 1825052a82d8SChao Yu return 1; 1826052a82d8SChao Yu } 1827052a82d8SChao Yu 1828052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1829052a82d8SChao Yu { 1830052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1831052a82d8SChao Yu struct inode *inode; 1832052a82d8SChao Yu nid_t ino = ino_of_node(page); 1833052a82d8SChao Yu 1834052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1835052a82d8SChao Yu if (!inode) 1836052a82d8SChao Yu return false; 1837052a82d8SChao Yu 1838052a82d8SChao Yu f2fs_update_inode(inode, page); 1839052a82d8SChao Yu unlock_page(page); 1840052a82d8SChao Yu 1841052a82d8SChao Yu iput(inode); 1842052a82d8SChao Yu return true; 1843052a82d8SChao Yu } 1844052a82d8SChao Yu 184568e79bafSJia Yang void f2fs_flush_inline_data(struct f2fs_sb_info *sbi) 184634c061adSSayali Lokhande { 184734c061adSSayali Lokhande pgoff_t index = 0; 184834c061adSSayali Lokhande struct pagevec pvec; 184934c061adSSayali Lokhande int nr_pages; 185034c061adSSayali Lokhande 185134c061adSSayali Lokhande pagevec_init(&pvec); 185234c061adSSayali Lokhande 185334c061adSSayali Lokhande while ((nr_pages = pagevec_lookup_tag(&pvec, 185434c061adSSayali Lokhande NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 185534c061adSSayali Lokhande int i; 185634c061adSSayali Lokhande 185734c061adSSayali Lokhande for (i = 0; i < nr_pages; i++) { 185834c061adSSayali Lokhande struct page *page = pvec.pages[i]; 185934c061adSSayali Lokhande 186034c061adSSayali Lokhande if (!IS_DNODE(page)) 186134c061adSSayali Lokhande continue; 186234c061adSSayali Lokhande 186334c061adSSayali Lokhande lock_page(page); 186434c061adSSayali Lokhande 186534c061adSSayali Lokhande if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 186634c061adSSayali Lokhande continue_unlock: 186734c061adSSayali Lokhande unlock_page(page); 186834c061adSSayali Lokhande continue; 186934c061adSSayali Lokhande } 187034c061adSSayali Lokhande 187134c061adSSayali Lokhande if (!PageDirty(page)) { 187234c061adSSayali Lokhande /* someone wrote it for us */ 187334c061adSSayali Lokhande goto continue_unlock; 187434c061adSSayali Lokhande } 187534c061adSSayali Lokhande 187634c061adSSayali Lokhande /* flush inline_data, if it's async context. */ 1877b763f3beSChao Yu if (page_private_inline(page)) { 1878b763f3beSChao Yu clear_page_private_inline(page); 187934c061adSSayali Lokhande unlock_page(page); 188034c061adSSayali Lokhande flush_inline_data(sbi, ino_of_node(page)); 188134c061adSSayali Lokhande continue; 188234c061adSSayali Lokhande } 188334c061adSSayali Lokhande unlock_page(page); 188434c061adSSayali Lokhande } 188534c061adSSayali Lokhande pagevec_release(&pvec); 188634c061adSSayali Lokhande cond_resched(); 188734c061adSSayali Lokhande } 188834c061adSSayali Lokhande } 188934c061adSSayali Lokhande 18904d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 18914d57b86dSChao Yu struct writeback_control *wbc, 1892b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 189352681375SJaegeuk Kim { 1894028a63a6SJan Kara pgoff_t index; 189552681375SJaegeuk Kim struct pagevec pvec; 189652681375SJaegeuk Kim int step = 0; 189712bb0a8fSJaegeuk Kim int nwritten = 0; 18983f5f4959SChao Yu int ret = 0; 1899c29fd0c0SChao Yu int nr_pages, done = 0; 1900e05df3b1SJaegeuk Kim 190186679820SMel Gorman pagevec_init(&pvec); 1902e05df3b1SJaegeuk Kim 1903e05df3b1SJaegeuk Kim next_step: 1904e05df3b1SJaegeuk Kim index = 0; 1905e05df3b1SJaegeuk Kim 1906c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1907c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1908028a63a6SJan Kara int i; 1909e05df3b1SJaegeuk Kim 1910e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1911e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1912d68f735bSJaegeuk Kim bool submitted = false; 1913052a82d8SChao Yu bool may_dirty = true; 1914e05df3b1SJaegeuk Kim 1915c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1916c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1917c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1918c29fd0c0SChao Yu done = 1; 1919c29fd0c0SChao Yu break; 1920c29fd0c0SChao Yu } 1921c29fd0c0SChao Yu 1922e05df3b1SJaegeuk Kim /* 1923e05df3b1SJaegeuk Kim * flushing sequence with step: 1924e05df3b1SJaegeuk Kim * 0. indirect nodes 1925e05df3b1SJaegeuk Kim * 1. dentry dnodes 1926e05df3b1SJaegeuk Kim * 2. file dnodes 1927e05df3b1SJaegeuk Kim */ 1928e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1929e05df3b1SJaegeuk Kim continue; 1930e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1931e05df3b1SJaegeuk Kim is_cold_node(page))) 1932e05df3b1SJaegeuk Kim continue; 1933e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1934e05df3b1SJaegeuk Kim !is_cold_node(page))) 1935e05df3b1SJaegeuk Kim continue; 19369a4cbc9eSChao Yu lock_node: 19374b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 19384b270a8cSChao Yu lock_page(page); 19394b270a8cSChao Yu else if (!trylock_page(page)) 1940e05df3b1SJaegeuk Kim continue; 1941e05df3b1SJaegeuk Kim 19424ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1943e05df3b1SJaegeuk Kim continue_unlock: 1944e05df3b1SJaegeuk Kim unlock_page(page); 1945e05df3b1SJaegeuk Kim continue; 1946e05df3b1SJaegeuk Kim } 1947e05df3b1SJaegeuk Kim 1948e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1949e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1950e05df3b1SJaegeuk Kim goto continue_unlock; 1951e05df3b1SJaegeuk Kim } 1952e05df3b1SJaegeuk Kim 1953b0f3b87fSJaegeuk Kim /* flush inline_data/inode, if it's async context. */ 1954b0f3b87fSJaegeuk Kim if (!do_balance) 1955b0f3b87fSJaegeuk Kim goto write_node; 1956b0f3b87fSJaegeuk Kim 1957b0f3b87fSJaegeuk Kim /* flush inline_data */ 1958b763f3beSChao Yu if (page_private_inline(page)) { 1959b763f3beSChao Yu clear_page_private_inline(page); 19602049d4fcSJaegeuk Kim unlock_page(page); 19612049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 19629a4cbc9eSChao Yu goto lock_node; 19632049d4fcSJaegeuk Kim } 19642049d4fcSJaegeuk Kim 1965052a82d8SChao Yu /* flush dirty inode */ 1966052a82d8SChao Yu if (IS_INODE(page) && may_dirty) { 1967052a82d8SChao Yu may_dirty = false; 1968052a82d8SChao Yu if (flush_dirty_inode(page)) 1969052a82d8SChao Yu goto lock_node; 1970052a82d8SChao Yu } 1971b0f3b87fSJaegeuk Kim write_node: 1972bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1973fa3d2bdfSJaegeuk Kim 1974e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1975e05df3b1SJaegeuk Kim goto continue_unlock; 1976e05df3b1SJaegeuk Kim 1977e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1978e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 197952746519SJaegeuk Kim 1980401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 198150fa53ecSChao Yu wbc, do_balance, io_type, NULL); 1982d68f735bSJaegeuk Kim if (ret) 198352746519SJaegeuk Kim unlock_page(page); 1984d68f735bSJaegeuk Kim else if (submitted) 19853f5f4959SChao Yu nwritten++; 1986e05df3b1SJaegeuk Kim 1987e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1988e05df3b1SJaegeuk Kim break; 1989e05df3b1SJaegeuk Kim } 1990e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1991e05df3b1SJaegeuk Kim cond_resched(); 1992e05df3b1SJaegeuk Kim 1993e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1994e05df3b1SJaegeuk Kim step = 2; 1995e05df3b1SJaegeuk Kim break; 1996e05df3b1SJaegeuk Kim } 1997e05df3b1SJaegeuk Kim } 1998e05df3b1SJaegeuk Kim 1999e05df3b1SJaegeuk Kim if (step < 2) { 2000100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 2001100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 2002fd8c8cafSChao Yu goto out; 2003e05df3b1SJaegeuk Kim step++; 2004e05df3b1SJaegeuk Kim goto next_step; 2005e05df3b1SJaegeuk Kim } 2006fd8c8cafSChao Yu out: 20073f5f4959SChao Yu if (nwritten) 2008b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 2009db198ae0SChao Yu 2010db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 2011db198ae0SChao Yu return -EIO; 20123f5f4959SChao Yu return ret; 2013e05df3b1SJaegeuk Kim } 2014e05df3b1SJaegeuk Kim 201550fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 201650fa53ecSChao Yu unsigned int seq_id) 2017cfe58f9dSJaegeuk Kim { 201850fa53ecSChao Yu struct fsync_node_entry *fn; 201950fa53ecSChao Yu struct page *page; 202050fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 202150fa53ecSChao Yu unsigned long flags; 202250fa53ecSChao Yu unsigned int cur_seq_id = 0; 2023280db3c8SMiklos Szeredi int ret2, ret = 0; 2024cfe58f9dSJaegeuk Kim 202550fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 202650fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 202750fa53ecSChao Yu if (list_empty(head)) { 202850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 202950fa53ecSChao Yu break; 203050fa53ecSChao Yu } 203150fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 203250fa53ecSChao Yu if (fn->seq_id > seq_id) { 203350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 203450fa53ecSChao Yu break; 203550fa53ecSChao Yu } 203650fa53ecSChao Yu cur_seq_id = fn->seq_id; 203750fa53ecSChao Yu page = fn->page; 203850fa53ecSChao Yu get_page(page); 203950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 20404ef51a8fSJaegeuk Kim 2041bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 2042cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 2043cfe58f9dSJaegeuk Kim ret = -EIO; 204450fa53ecSChao Yu 204550fa53ecSChao Yu put_page(page); 204650fa53ecSChao Yu 204750fa53ecSChao Yu if (ret) 204850fa53ecSChao Yu break; 2049cfe58f9dSJaegeuk Kim } 2050cfe58f9dSJaegeuk Kim 2051280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 2052cfe58f9dSJaegeuk Kim if (!ret) 2053cfe58f9dSJaegeuk Kim ret = ret2; 205450fa53ecSChao Yu 2055cfe58f9dSJaegeuk Kim return ret; 2056cfe58f9dSJaegeuk Kim } 2057cfe58f9dSJaegeuk Kim 2058e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 2059e05df3b1SJaegeuk Kim struct writeback_control *wbc) 2060e05df3b1SJaegeuk Kim { 20614081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 20629dfa1bafSJaegeuk Kim struct blk_plug plug; 206350c8cdb3SJaegeuk Kim long diff; 2064e05df3b1SJaegeuk Kim 20650771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 20660771fcc7SChao Yu goto skip_write; 20670771fcc7SChao Yu 20684660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 20697bcd0cfaSChao Yu f2fs_balance_fs_bg(sbi, true); 2070e05df3b1SJaegeuk Kim 2071a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 2072812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 2073812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 2074812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 2075d3baf95dSJaegeuk Kim goto skip_write; 2076a7fdffbdSJaegeuk Kim 2077c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2078c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 2079c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 2080c29fd0c0SChao Yu goto skip_write; 2081c29fd0c0SChao Yu 2082d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2083d31c7c3fSYunlei He 208450c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 20859dfa1bafSJaegeuk Kim blk_start_plug(&plug); 20864d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 20879dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 208850c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2089c29fd0c0SChao Yu 2090c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2091c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2092e05df3b1SJaegeuk Kim return 0; 2093d3baf95dSJaegeuk Kim 2094d3baf95dSJaegeuk Kim skip_write: 2095d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2096d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2097d3baf95dSJaegeuk Kim return 0; 2098e05df3b1SJaegeuk Kim } 2099e05df3b1SJaegeuk Kim 2100e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 2101e05df3b1SJaegeuk Kim { 210226c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 210326c6b887SJaegeuk Kim 2104237c0790SJaegeuk Kim if (!PageUptodate(page)) 2105e05df3b1SJaegeuk Kim SetPageUptodate(page); 210654c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 210754c55c4eSWeichao Guo if (IS_INODE(page)) 210854c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 210954c55c4eSWeichao Guo #endif 2110e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 2111b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 21124081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 2113b763f3beSChao Yu set_page_private_reference(page); 2114e05df3b1SJaegeuk Kim return 1; 2115e05df3b1SJaegeuk Kim } 2116e05df3b1SJaegeuk Kim return 0; 2117e05df3b1SJaegeuk Kim } 2118e05df3b1SJaegeuk Kim 21190a8165d7SJaegeuk Kim /* 2120e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2121e05df3b1SJaegeuk Kim */ 2122e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2123e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2124e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2125e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 2126487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 2127487261f3SChao Yu .releasepage = f2fs_release_page, 21285b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 21295b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 21305b7a487cSWeichao Guo #endif 2131e05df3b1SJaegeuk Kim }; 2132e05df3b1SJaegeuk Kim 21338a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 21348a7ed66aSJaegeuk Kim nid_t n) 2135e05df3b1SJaegeuk Kim { 21368a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 21373aa770a9SNamjae Jeon } 2138e05df3b1SJaegeuk Kim 21399a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2140b815bdc7SLiu Song struct free_nid *i) 2141e05df3b1SJaegeuk Kim { 2142b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2143eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 21445f029c04SYi Zhuang 2145eb0aa4b8SJaegeuk Kim if (err) 2146eb0aa4b8SJaegeuk Kim return err; 2147eb0aa4b8SJaegeuk Kim 2148b815bdc7SLiu Song nm_i->nid_cnt[FREE_NID]++; 21499a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2150eb0aa4b8SJaegeuk Kim return 0; 2151b8559dc2SChao Yu } 2152b8559dc2SChao Yu 21539a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2154a0761f63SFan Li struct free_nid *i, enum nid_state state) 2155b8559dc2SChao Yu { 2156b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2157b8559dc2SChao Yu 21589a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 21599a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 21609a4ffdf5SChao Yu if (state == FREE_NID) 2161e05df3b1SJaegeuk Kim list_del(&i->list); 21628a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2163e05df3b1SJaegeuk Kim } 2164e05df3b1SJaegeuk Kim 2165a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2166a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2167a0761f63SFan Li { 2168a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2169a0761f63SFan Li 2170a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2171a0761f63SFan Li i->state = dst_state; 2172a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2173a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2174a0761f63SFan Li 2175a0761f63SFan Li switch (dst_state) { 2176a0761f63SFan Li case PREALLOC_NID: 2177a0761f63SFan Li list_del(&i->list); 2178a0761f63SFan Li break; 2179a0761f63SFan Li case FREE_NID: 2180a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2181a0761f63SFan Li break; 2182a0761f63SFan Li default: 2183a0761f63SFan Li BUG_ON(1); 2184a0761f63SFan Li } 2185a0761f63SFan Li } 2186a0761f63SFan Li 21875921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 21885921aaa1SLiFan bool set, bool build) 21895921aaa1SLiFan { 21905921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 21915921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 21925921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 21935921aaa1SLiFan 21945921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 21955921aaa1SLiFan return; 21965921aaa1SLiFan 21975921aaa1SLiFan if (set) { 21985921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 21995921aaa1SLiFan return; 22005921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22015921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 22025921aaa1SLiFan } else { 22035921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 22045921aaa1SLiFan return; 22055921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 22065921aaa1SLiFan if (!build) 22075921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 22085921aaa1SLiFan } 22095921aaa1SLiFan } 22105921aaa1SLiFan 22114ac91242SChao Yu /* return if the nid is recognized as free */ 22125921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 22135921aaa1SLiFan nid_t nid, bool build, bool update) 2214e05df3b1SJaegeuk Kim { 22156fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 221630a61ddfSChao Yu struct free_nid *i, *e; 221759bbd474SJaegeuk Kim struct nat_entry *ne; 221830a61ddfSChao Yu int err = -EINVAL; 221930a61ddfSChao Yu bool ret = false; 22209198acebSJaegeuk Kim 22219198acebSJaegeuk Kim /* 0 nid should not be used */ 2222cfb271d4SChao Yu if (unlikely(nid == 0)) 22234ac91242SChao Yu return false; 222459bbd474SJaegeuk Kim 2225626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2226626bcf2bSChao Yu return false; 2227626bcf2bSChao Yu 22287bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 2229e05df3b1SJaegeuk Kim i->nid = nid; 22309a4ffdf5SChao Yu i->state = FREE_NID; 2231e05df3b1SJaegeuk Kim 22325921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2233769ec6e5SJaegeuk Kim 2234b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 223530a61ddfSChao Yu 223630a61ddfSChao Yu if (build) { 223730a61ddfSChao Yu /* 223830a61ddfSChao Yu * Thread A Thread B 223930a61ddfSChao Yu * - f2fs_create 224030a61ddfSChao Yu * - f2fs_new_inode 22414d57b86dSChao Yu * - f2fs_alloc_nid 22429a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 224330a61ddfSChao Yu * - f2fs_balance_fs_bg 22444d57b86dSChao Yu * - f2fs_build_free_nids 22454d57b86dSChao Yu * - __f2fs_build_free_nids 224630a61ddfSChao Yu * - scan_nat_page 224730a61ddfSChao Yu * - add_free_nid 224830a61ddfSChao Yu * - __lookup_nat_cache 224930a61ddfSChao Yu * - f2fs_add_link 22504d57b86dSChao Yu * - f2fs_init_inode_metadata 22514d57b86dSChao Yu * - f2fs_new_inode_page 22524d57b86dSChao Yu * - f2fs_new_node_page 225330a61ddfSChao Yu * - set_node_addr 22544d57b86dSChao Yu * - f2fs_alloc_nid_done 22559a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 22569a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 225730a61ddfSChao Yu */ 225830a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 225930a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 226030a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 226130a61ddfSChao Yu goto err_out; 226230a61ddfSChao Yu 226330a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 226430a61ddfSChao Yu if (e) { 22659a4ffdf5SChao Yu if (e->state == FREE_NID) 226630a61ddfSChao Yu ret = true; 226730a61ddfSChao Yu goto err_out; 226830a61ddfSChao Yu } 226930a61ddfSChao Yu } 227030a61ddfSChao Yu ret = true; 2271b815bdc7SLiu Song err = __insert_free_nid(sbi, i); 227230a61ddfSChao Yu err_out: 22735921aaa1SLiFan if (update) { 22745921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 22755921aaa1SLiFan if (!build) 22765921aaa1SLiFan nm_i->available_nids++; 22775921aaa1SLiFan } 2278b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2279769ec6e5SJaegeuk Kim radix_tree_preload_end(); 22805921aaa1SLiFan 228130a61ddfSChao Yu if (err) 2282e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 228330a61ddfSChao Yu return ret; 2284e05df3b1SJaegeuk Kim } 2285e05df3b1SJaegeuk Kim 2286b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2287e05df3b1SJaegeuk Kim { 2288b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2289e05df3b1SJaegeuk Kim struct free_nid *i; 2290cf0ee0f0SChao Yu bool need_free = false; 2291cf0ee0f0SChao Yu 2292b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22938a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 22949a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2295a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2296cf0ee0f0SChao Yu need_free = true; 2297e05df3b1SJaegeuk Kim } 2298b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2299cf0ee0f0SChao Yu 2300cf0ee0f0SChao Yu if (need_free) 2301cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2302e05df3b1SJaegeuk Kim } 2303e05df3b1SJaegeuk Kim 2304e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2305e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2306e05df3b1SJaegeuk Kim { 23076fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2308e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2309e05df3b1SJaegeuk Kim block_t blk_addr; 23104ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2311e05df3b1SJaegeuk Kim int i; 2312e05df3b1SJaegeuk Kim 231323380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 23144ac91242SChao Yu 2315e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2316e05df3b1SJaegeuk Kim 2317e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2318cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 231904431c44SJaegeuk Kim break; 232023d38844SHaicheng Li 2321e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2322e2374015SChao Yu 2323e2374015SChao Yu if (blk_addr == NEW_ADDR) 2324e2374015SChao Yu return -EINVAL; 2325e2374015SChao Yu 23265921aaa1SLiFan if (blk_addr == NULL_ADDR) { 23275921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 23285921aaa1SLiFan } else { 2329346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 23305921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2331346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2332e05df3b1SJaegeuk Kim } 2333e05df3b1SJaegeuk Kim } 2334e2374015SChao Yu 2335e2374015SChao Yu return 0; 23365921aaa1SLiFan } 2337e05df3b1SJaegeuk Kim 23382fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 23394ac91242SChao Yu { 23404ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 23414ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 23422fbaa25fSChao Yu int i; 23434ac91242SChao Yu 23444ac91242SChao Yu down_read(&curseg->journal_rwsem); 23454ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 23464ac91242SChao Yu block_t addr; 23474ac91242SChao Yu nid_t nid; 23484ac91242SChao Yu 23494ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 23504ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 23514ac91242SChao Yu if (addr == NULL_ADDR) 23525921aaa1SLiFan add_free_nid(sbi, nid, true, false); 23534ac91242SChao Yu else 23544ac91242SChao Yu remove_free_nid(sbi, nid); 23554ac91242SChao Yu } 23564ac91242SChao Yu up_read(&curseg->journal_rwsem); 23572fbaa25fSChao Yu } 23582fbaa25fSChao Yu 2359e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 23604ac91242SChao Yu { 23614ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 23624ac91242SChao Yu unsigned int i, idx; 236397456574SFan Li nid_t nid; 23644ac91242SChao Yu 23654ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 23664ac91242SChao Yu 23674ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 23684ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 23694ac91242SChao Yu continue; 23704ac91242SChao Yu if (!nm_i->free_nid_count[i]) 23714ac91242SChao Yu continue; 23724ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 237397456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 237497456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 237597456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 237697456574SFan Li break; 23774ac91242SChao Yu 23784ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 23795921aaa1SLiFan add_free_nid(sbi, nid, true, false); 23804ac91242SChao Yu 23819a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 23824ac91242SChao Yu goto out; 23834ac91242SChao Yu } 23844ac91242SChao Yu } 23854ac91242SChao Yu out: 23862fbaa25fSChao Yu scan_curseg_cache(sbi); 23874ac91242SChao Yu 23884ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 23894ac91242SChao Yu } 23904ac91242SChao Yu 2391e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 23924d57b86dSChao Yu bool sync, bool mount) 2393e05df3b1SJaegeuk Kim { 2394e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2395e2374015SChao Yu int i = 0, ret; 239655008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2397e05df3b1SJaegeuk Kim 2398e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2399e9cdd307SYunlei He nid = 0; 2400e9cdd307SYunlei He 2401e2cab031SSahitya Tummala if (unlikely(nid % NAT_ENTRY_PER_BLOCK)) 2402e2cab031SSahitya Tummala nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK; 2403e2cab031SSahitya Tummala 240455008d84SJaegeuk Kim /* Enough entries */ 24059a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2406e2374015SChao Yu return 0; 2407e05df3b1SJaegeuk Kim 24084d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2409e2374015SChao Yu return 0; 2410e05df3b1SJaegeuk Kim 24114ac91242SChao Yu if (!mount) { 24124ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 24134ac91242SChao Yu scan_free_nid_bits(sbi); 24144ac91242SChao Yu 241574986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2416e2374015SChao Yu return 0; 241722ad0b6aSJaegeuk Kim } 241822ad0b6aSJaegeuk Kim 241955008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 24204d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 242126879fb1SChao Yu META_NAT, true); 2422e05df3b1SJaegeuk Kim 2423b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2424a5131193SJaegeuk Kim 2425e05df3b1SJaegeuk Kim while (1) { 242666e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 242766e83361SYunlei He nm_i->nat_block_bitmap)) { 2428e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2429e05df3b1SJaegeuk Kim 2430edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2431edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2432edc55aafSJaegeuk Kim } else { 2433e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2434e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2435edc55aafSJaegeuk Kim } 2436e2374015SChao Yu 2437e2374015SChao Yu if (ret) { 2438e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2439dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2440edc55aafSJaegeuk Kim return ret; 2441e2374015SChao Yu } 244266e83361SYunlei He } 2443e05df3b1SJaegeuk Kim 2444e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2445cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2446e05df3b1SJaegeuk Kim nid = 0; 244755008d84SJaegeuk Kim 2448a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2449e05df3b1SJaegeuk Kim break; 2450e05df3b1SJaegeuk Kim } 2451e05df3b1SJaegeuk Kim 245255008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 245355008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2454e05df3b1SJaegeuk Kim 2455e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 24562fbaa25fSChao Yu scan_curseg_cache(sbi); 2457dfc08a12SChao Yu 2458b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24592db2388fSChao Yu 24604d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2461ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2462e2374015SChao Yu 2463e2374015SChao Yu return 0; 2464e05df3b1SJaegeuk Kim } 2465e05df3b1SJaegeuk Kim 2466e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 24672411cf5bSChao Yu { 2468e2374015SChao Yu int ret; 2469e2374015SChao Yu 24702411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2471e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 24722411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2473e2374015SChao Yu 2474e2374015SChao Yu return ret; 24752411cf5bSChao Yu } 24762411cf5bSChao Yu 2477e05df3b1SJaegeuk Kim /* 2478e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2479e05df3b1SJaegeuk Kim * from second parameter of this function. 2480e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2481e05df3b1SJaegeuk Kim */ 24824d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2483e05df3b1SJaegeuk Kim { 2484e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2485e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2486e05df3b1SJaegeuk Kim retry: 248755523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 2488c45d6002SChao Yu f2fs_show_injection_info(sbi, FAULT_ALLOC_NID); 2489cb78942bSJaegeuk Kim return false; 249055523519SChao Yu } 24917fa750a1SArnd Bergmann 2492b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2493e05df3b1SJaegeuk Kim 249404d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 249504d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 249604d47e67SChao Yu return false; 249704d47e67SChao Yu } 2498e05df3b1SJaegeuk Kim 24994d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 25004d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 25019a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 25029a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2503b8559dc2SChao Yu struct free_nid, list); 2504e05df3b1SJaegeuk Kim *nid = i->nid; 2505b8559dc2SChao Yu 2506a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 250704d47e67SChao Yu nm_i->available_nids--; 25084ac91242SChao Yu 2509346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 25104ac91242SChao Yu 2511b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2512e05df3b1SJaegeuk Kim return true; 2513e05df3b1SJaegeuk Kim } 2514b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 251555008d84SJaegeuk Kim 251655008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2517f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 251855008d84SJaegeuk Kim goto retry; 2519f84262b0SJaegeuk Kim return false; 252055008d84SJaegeuk Kim } 2521e05df3b1SJaegeuk Kim 25220a8165d7SJaegeuk Kim /* 25234d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2524e05df3b1SJaegeuk Kim */ 25254d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2526e05df3b1SJaegeuk Kim { 2527e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2528e05df3b1SJaegeuk Kim struct free_nid *i; 2529e05df3b1SJaegeuk Kim 2530b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25318a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2532b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2533a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2534b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2535cf0ee0f0SChao Yu 2536cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2537e05df3b1SJaegeuk Kim } 2538e05df3b1SJaegeuk Kim 25390a8165d7SJaegeuk Kim /* 25404d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2541e05df3b1SJaegeuk Kim */ 25424d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2543e05df3b1SJaegeuk Kim { 254449952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 254549952fa1SJaegeuk Kim struct free_nid *i; 2546cf0ee0f0SChao Yu bool need_free = false; 254749952fa1SJaegeuk Kim 254865985d93SJaegeuk Kim if (!nid) 254965985d93SJaegeuk Kim return; 255065985d93SJaegeuk Kim 2551b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25528a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2553b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2554b8559dc2SChao Yu 25554d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2556a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2557cf0ee0f0SChao Yu need_free = true; 255895630cbaSHaicheng Li } else { 2559a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 256095630cbaSHaicheng Li } 256104d47e67SChao Yu 256204d47e67SChao Yu nm_i->available_nids++; 256304d47e67SChao Yu 2564346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 25654ac91242SChao Yu 2566b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2567cf0ee0f0SChao Yu 2568cf0ee0f0SChao Yu if (need_free) 2569cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2570e05df3b1SJaegeuk Kim } 2571e05df3b1SJaegeuk Kim 25724d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 257331696580SChao Yu { 257431696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 257531696580SChao Yu int nr = nr_shrink; 257631696580SChao Yu 25779a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2578ad4edb83SJaegeuk Kim return 0; 2579ad4edb83SJaegeuk Kim 258031696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 258131696580SChao Yu return 0; 258231696580SChao Yu 2583042be373SChao Yu while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) { 2584042be373SChao Yu struct free_nid *i, *next; 2585042be373SChao Yu unsigned int batch = SHRINK_NID_BATCH_SIZE; 2586042be373SChao Yu 2587b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25889a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2589042be373SChao Yu if (!nr_shrink || !batch || 25909a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 259131696580SChao Yu break; 2592a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 259331696580SChao Yu kmem_cache_free(free_nid_slab, i); 259431696580SChao Yu nr_shrink--; 2595042be373SChao Yu batch--; 259631696580SChao Yu } 2597b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2598042be373SChao Yu } 2599042be373SChao Yu 260031696580SChao Yu mutex_unlock(&nm_i->build_lock); 260131696580SChao Yu 260231696580SChao Yu return nr - nr_shrink; 260331696580SChao Yu } 260431696580SChao Yu 26059627a7b3SChao Yu int f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 260628cdce04SChao Yu { 260728cdce04SChao Yu void *src_addr, *dst_addr; 260828cdce04SChao Yu size_t inline_size; 260928cdce04SChao Yu struct page *ipage; 261028cdce04SChao Yu struct f2fs_inode *ri; 261128cdce04SChao Yu 26124d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 26139627a7b3SChao Yu if (IS_ERR(ipage)) 26149627a7b3SChao Yu return PTR_ERR(ipage); 261528cdce04SChao Yu 2616e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 26171eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 261896dd0251SChao Yu if (!f2fs_has_inline_xattr(inode)) { 26191eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 262096dd0251SChao Yu stat_inc_inline_xattr(inode); 262196dd0251SChao Yu } 26221eca05aaSYunlei He } else { 262396dd0251SChao Yu if (f2fs_has_inline_xattr(inode)) { 262496dd0251SChao Yu stat_dec_inline_xattr(inode); 262591942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 262696dd0251SChao Yu } 2627e3b4d43fSJaegeuk Kim goto update_inode; 2628e3b4d43fSJaegeuk Kim } 2629e3b4d43fSJaegeuk Kim 26306afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 26316afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 263228cdce04SChao Yu inline_size = inline_xattr_size(inode); 263328cdce04SChao Yu 2634bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 263528cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2636e3b4d43fSJaegeuk Kim update_inode: 26374d57b86dSChao Yu f2fs_update_inode(inode, ipage); 263828cdce04SChao Yu f2fs_put_page(ipage, 1); 26399627a7b3SChao Yu return 0; 264028cdce04SChao Yu } 264128cdce04SChao Yu 26424d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2643abb2366cSJaegeuk Kim { 26444081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2645abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 264687905682SYunlei He nid_t new_xnid; 264787905682SYunlei He struct dnode_of_data dn; 2648abb2366cSJaegeuk Kim struct node_info ni; 2649d260081cSChao Yu struct page *xpage; 26507735730dSChao Yu int err; 2651abb2366cSJaegeuk Kim 2652abb2366cSJaegeuk Kim if (!prev_xnid) 2653abb2366cSJaegeuk Kim goto recover_xnid; 2654abb2366cSJaegeuk Kim 2655d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 26567735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 26577735730dSChao Yu if (err) 26587735730dSChao Yu return err; 26597735730dSChao Yu 26604d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2661000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2662479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2663abb2366cSJaegeuk Kim 2664abb2366cSJaegeuk Kim recover_xnid: 2665d260081cSChao Yu /* 2: update xattr nid in inode */ 26664d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 266787905682SYunlei He return -ENOSPC; 266887905682SYunlei He 266987905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 26704d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 267187905682SYunlei He if (IS_ERR(xpage)) { 26724d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 267387905682SYunlei He return PTR_ERR(xpage); 267487905682SYunlei He } 267587905682SYunlei He 26764d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 26774d57b86dSChao Yu f2fs_update_inode_page(inode); 2678abb2366cSJaegeuk Kim 2679d260081cSChao Yu /* 3: update and set xattr node page dirty */ 268087905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2681d260081cSChao Yu 2682d260081cSChao Yu set_page_dirty(xpage); 2683d260081cSChao Yu f2fs_put_page(xpage, 1); 2684abb2366cSJaegeuk Kim 2685d260081cSChao Yu return 0; 2686abb2366cSJaegeuk Kim } 2687abb2366cSJaegeuk Kim 26884d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2689e05df3b1SJaegeuk Kim { 269058bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2691e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2692e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2693e05df3b1SJaegeuk Kim struct page *ipage; 26947735730dSChao Yu int err; 2695e05df3b1SJaegeuk Kim 26967735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 26977735730dSChao Yu if (err) 26987735730dSChao Yu return err; 2699e8271fa3SJaegeuk Kim 2700e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2701e8271fa3SJaegeuk Kim return -EINVAL; 2702e8ea9b3dSJaegeuk Kim retry: 2703300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2704e8ea9b3dSJaegeuk Kim if (!ipage) { 27055df7731fSChao Yu congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); 2706e8ea9b3dSJaegeuk Kim goto retry; 2707e8ea9b3dSJaegeuk Kim } 2708e05df3b1SJaegeuk Kim 2709e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2710b8559dc2SChao Yu remove_free_nid(sbi, ino); 2711e05df3b1SJaegeuk Kim 2712237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2713e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2714e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2715ef2a0071SChao Yu set_cold_node(ipage, false); 2716e05df3b1SJaegeuk Kim 271758bfaf44SJaegeuk Kim src = F2FS_INODE(page); 271858bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2719e05df3b1SJaegeuk Kim 272036218b81SZheng Yongjun memcpy(dst, src, offsetof(struct f2fs_inode, i_ext)); 272158bfaf44SJaegeuk Kim dst->i_size = 0; 272258bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 272358bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 272458bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 27257a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 27265c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 27277a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 27286afc662eSChao Yu 27297beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 27306afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27316afc662eSChao Yu i_inline_xattr_size)) 27326afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 27336afc662eSChao Yu 27347beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 27355c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27365c57132eSChao Yu i_projid)) 27375c57132eSChao Yu dst->i_projid = src->i_projid; 27385cd1f387SChao Yu 27397beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 27405cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 27415cd1f387SChao Yu i_crtime_nsec)) { 27425cd1f387SChao Yu dst->i_crtime = src->i_crtime; 27435cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 27445cd1f387SChao Yu } 27455c57132eSChao Yu } 2746e05df3b1SJaegeuk Kim 2747e05df3b1SJaegeuk Kim new_ni = old_ni; 2748e05df3b1SJaegeuk Kim new_ni.ino = ino; 2749e05df3b1SJaegeuk Kim 27500abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 275165e5cd0aSJaegeuk Kim WARN_ON(1); 2752479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2753e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2754617deb8cSJaegeuk Kim set_page_dirty(ipage); 2755e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2756e05df3b1SJaegeuk Kim return 0; 2757e05df3b1SJaegeuk Kim } 2758e05df3b1SJaegeuk Kim 27597735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2760e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2761e05df3b1SJaegeuk Kim { 2762e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2763e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2764e05df3b1SJaegeuk Kim block_t addr; 27659ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2766e05df3b1SJaegeuk Kim 2767e05df3b1SJaegeuk Kim /* scan the node segment */ 2768e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2769e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2770e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2771e05df3b1SJaegeuk Kim 27729ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 27735f7136dbSMatthew Wilcox (Oracle) nrpages = bio_max_segs(last_offset - i); 2774393ff91fSJaegeuk Kim 27759af0ff1cSChao Yu /* readahead node pages */ 27764d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 27779af0ff1cSChao Yu 27789ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 27794d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2780393ff91fSJaegeuk Kim 27817735730dSChao Yu if (IS_ERR(page)) 27827735730dSChao Yu return PTR_ERR(page); 27837735730dSChao Yu 27849ecf4b80SChao Yu rn = F2FS_NODE(page); 2785393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2786393ff91fSJaegeuk Kim sum_entry->version = 0; 2787393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 27889af0ff1cSChao Yu sum_entry++; 27899ecf4b80SChao Yu f2fs_put_page(page, 1); 27909af0ff1cSChao Yu } 2791bac4eef6SChao Yu 27929ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2793bac4eef6SChao Yu addr + nrpages); 27949af0ff1cSChao Yu } 27957735730dSChao Yu return 0; 2796e05df3b1SJaegeuk Kim } 2797e05df3b1SJaegeuk Kim 2798aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2799e05df3b1SJaegeuk Kim { 2800e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2801e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2802b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2803e05df3b1SJaegeuk Kim int i; 2804e05df3b1SJaegeuk Kim 2805b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2806dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2807e05df3b1SJaegeuk Kim struct nat_entry *ne; 2808e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2809dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2810e05df3b1SJaegeuk Kim 2811b862676eSChao Yu if (f2fs_check_nid_range(sbi, nid)) 2812b862676eSChao Yu continue; 2813b862676eSChao Yu 2814dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 28159be32d72SJaegeuk Kim 2816e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2817e05df3b1SJaegeuk Kim if (!ne) { 281812f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 281912f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 28209be32d72SJaegeuk Kim } 282104d47e67SChao Yu 282204d47e67SChao Yu /* 282304d47e67SChao Yu * if a free nat in journal has not been used after last 282404d47e67SChao Yu * checkpoint, we should remove it from available nids, 282504d47e67SChao Yu * since later we will add it again. 282604d47e67SChao Yu */ 282704d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 282804d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 282904d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 283004d47e67SChao Yu nm_i->available_nids--; 283104d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 283204d47e67SChao Yu } 283304d47e67SChao Yu 2834e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2835e05df3b1SJaegeuk Kim } 2836dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2837b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2838e05df3b1SJaegeuk Kim } 2839e05df3b1SJaegeuk Kim 2840309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2841309cc2b6SJaegeuk Kim struct list_head *head, int max) 2842e05df3b1SJaegeuk Kim { 2843309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2844e05df3b1SJaegeuk Kim 2845309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2846309cc2b6SJaegeuk Kim goto add_out; 2847e05df3b1SJaegeuk Kim 2848309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2849309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2850309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2851309cc2b6SJaegeuk Kim return; 2852309cc2b6SJaegeuk Kim } 2853309cc2b6SJaegeuk Kim } 2854309cc2b6SJaegeuk Kim add_out: 2855309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2856aec71382SChao Yu } 2857aec71382SChao Yu 28589f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 285922ad0b6aSJaegeuk Kim struct page *page) 286022ad0b6aSJaegeuk Kim { 286122ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 286222ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 286322ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 286422ad0b6aSJaegeuk Kim int valid = 0; 286537a0ab2aSFan Li int i = 0; 286622ad0b6aSJaegeuk Kim 286722ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 286822ad0b6aSJaegeuk Kim return; 286922ad0b6aSJaegeuk Kim 287037a0ab2aSFan Li if (nat_index == 0) { 287137a0ab2aSFan Li valid = 1; 287237a0ab2aSFan Li i = 1; 287337a0ab2aSFan Li } 287437a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 287536af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 287622ad0b6aSJaegeuk Kim valid++; 287722ad0b6aSJaegeuk Kim } 287822ad0b6aSJaegeuk Kim if (valid == 0) { 287923380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 288023380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 288122ad0b6aSJaegeuk Kim return; 288222ad0b6aSJaegeuk Kim } 288322ad0b6aSJaegeuk Kim 288423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 288522ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 288623380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 288722ad0b6aSJaegeuk Kim else 288823380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 288922ad0b6aSJaegeuk Kim } 289022ad0b6aSJaegeuk Kim 2891edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 289222ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2893309cc2b6SJaegeuk Kim { 2894309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2895b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2896309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2897309cc2b6SJaegeuk Kim bool to_journal = true; 2898309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2899309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2900309cc2b6SJaegeuk Kim struct page *page = NULL; 2901aec71382SChao Yu 2902aec71382SChao Yu /* 2903aec71382SChao Yu * there are two steps to flush nat entries: 2904aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2905aec71382SChao Yu * #2, flush nat entries to nat page. 2906aec71382SChao Yu */ 290722ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 290822ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2909aec71382SChao Yu to_journal = false; 2910aec71382SChao Yu 2911aec71382SChao Yu if (to_journal) { 2912b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2913aec71382SChao Yu } else { 2914e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2915edc55aafSJaegeuk Kim if (IS_ERR(page)) 2916edc55aafSJaegeuk Kim return PTR_ERR(page); 2917edc55aafSJaegeuk Kim 2918e05df3b1SJaegeuk Kim nat_blk = page_address(page); 29199850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2920e05df3b1SJaegeuk Kim } 2921e05df3b1SJaegeuk Kim 2922aec71382SChao Yu /* flush dirty nats in nat entry set */ 2923309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2924aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2925aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2926aec71382SChao Yu int offset; 2927aec71382SChao Yu 2928febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2929309cc2b6SJaegeuk Kim 2930aec71382SChao Yu if (to_journal) { 29314d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2932aec71382SChao Yu NAT_JOURNAL, nid, 1); 29339850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2934dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2935dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2936aec71382SChao Yu } else { 2937aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2938aec71382SChao Yu } 2939aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 294088bd02c9SJaegeuk Kim nat_reset_flag(ne); 29410b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 294204d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 29435921aaa1SLiFan add_free_nid(sbi, nid, false, true); 29444ac91242SChao Yu } else { 29454ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2946346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 294704d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 294804d47e67SChao Yu } 2949e05df3b1SJaegeuk Kim } 2950aec71382SChao Yu 295122ad0b6aSJaegeuk Kim if (to_journal) { 2952b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 295322ad0b6aSJaegeuk Kim } else { 295422ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2955e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 295622ad0b6aSJaegeuk Kim } 2957aec71382SChao Yu 295859c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 295959c9081bSYunlei He if (!set->entry_cnt) { 2960309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2961309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2962309cc2b6SJaegeuk Kim } 2963edc55aafSJaegeuk Kim return 0; 296459c9081bSYunlei He } 2965aec71382SChao Yu 2966309cc2b6SJaegeuk Kim /* 2967309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2968309cc2b6SJaegeuk Kim */ 2969edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2970309cc2b6SJaegeuk Kim { 2971309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2972309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2973b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 29747aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2975309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2976309cc2b6SJaegeuk Kim unsigned int found; 2977309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2978309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2979edc55aafSJaegeuk Kim int err = 0; 2980309cc2b6SJaegeuk Kim 2981a95ba66aSJaegeuk Kim /* 2982a95ba66aSJaegeuk Kim * during unmount, let's flush nat_bits before checking 2983a95ba66aSJaegeuk Kim * nat_cnt[DIRTY_NAT]. 2984a95ba66aSJaegeuk Kim */ 29857f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 29867f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 29877f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 29887f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 29897f2ecdd8SJaegeuk Kim } 29907f2ecdd8SJaegeuk Kim 2991a95ba66aSJaegeuk Kim if (!nm_i->nat_cnt[DIRTY_NAT]) 2992edc55aafSJaegeuk Kim return 0; 2993a5131193SJaegeuk Kim 2994b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2995a5131193SJaegeuk Kim 2996309cc2b6SJaegeuk Kim /* 2997309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2998309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2999309cc2b6SJaegeuk Kim * into nat entry set. 3000309cc2b6SJaegeuk Kim */ 3001900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 3002a95ba66aSJaegeuk Kim !__has_cursum_space(journal, 3003a95ba66aSJaegeuk Kim nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL)) 3004309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 3005309cc2b6SJaegeuk Kim 3006309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 30077aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 3008309cc2b6SJaegeuk Kim unsigned idx; 30095f029c04SYi Zhuang 3010309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 3011309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 3012309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 3013dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 3014309cc2b6SJaegeuk Kim } 3015309cc2b6SJaegeuk Kim 3016309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 3017edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 3018edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 3019edc55aafSJaegeuk Kim if (err) 3020edc55aafSJaegeuk Kim break; 3021edc55aafSJaegeuk Kim } 3022309cc2b6SJaegeuk Kim 3023b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 302459c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 3025edc55aafSJaegeuk Kim 3026edc55aafSJaegeuk Kim return err; 3027e05df3b1SJaegeuk Kim } 3028e05df3b1SJaegeuk Kim 302922ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 303022ad0b6aSJaegeuk Kim { 303122ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 303222ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 303322ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 303422ad0b6aSJaegeuk Kim unsigned int i; 303522ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 303622ad0b6aSJaegeuk Kim block_t nat_bits_addr; 303722ad0b6aSJaegeuk Kim 303822ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 303922ad0b6aSJaegeuk Kim return 0; 304022ad0b6aSJaegeuk Kim 3041df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 30420b6d4ca0SEric Biggers nm_i->nat_bits = f2fs_kvzalloc(sbi, 3043acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 304422ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 304522ad0b6aSJaegeuk Kim return -ENOMEM; 304622ad0b6aSJaegeuk Kim 304722ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 304822ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 304922ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 30507735730dSChao Yu struct page *page; 30517735730dSChao Yu 30527735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 30533b30eb19SChao Yu if (IS_ERR(page)) 30547735730dSChao Yu return PTR_ERR(page); 305522ad0b6aSJaegeuk Kim 305622ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 305722ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 305822ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 305922ad0b6aSJaegeuk Kim } 306022ad0b6aSJaegeuk Kim 3061ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 306222ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 306322ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 306422ad0b6aSJaegeuk Kim return 0; 306522ad0b6aSJaegeuk Kim } 306622ad0b6aSJaegeuk Kim 306722ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 306822ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 306922ad0b6aSJaegeuk Kim 3070dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 307122ad0b6aSJaegeuk Kim return 0; 307222ad0b6aSJaegeuk Kim } 307322ad0b6aSJaegeuk Kim 3074bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 30757041d5d2SChao Yu { 30767041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 30777041d5d2SChao Yu unsigned int i = 0; 30787041d5d2SChao Yu nid_t nid, last_nid; 30797041d5d2SChao Yu 30807041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 30817041d5d2SChao Yu return; 30827041d5d2SChao Yu 30837041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 30847041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 30857041d5d2SChao Yu if (i >= nm_i->nat_blocks) 30867041d5d2SChao Yu break; 30877041d5d2SChao Yu 30887041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 30897041d5d2SChao Yu 30907041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 3091f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 30927041d5d2SChao Yu 3093346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 30947041d5d2SChao Yu for (; nid < last_nid; nid++) 3095346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 3096346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 30977041d5d2SChao Yu } 30987041d5d2SChao Yu 30997041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 31007041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 31017041d5d2SChao Yu if (i >= nm_i->nat_blocks) 31027041d5d2SChao Yu break; 31037041d5d2SChao Yu 31047041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 31057041d5d2SChao Yu } 31067041d5d2SChao Yu } 31077041d5d2SChao Yu 3108e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3109e05df3b1SJaegeuk Kim { 3110e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3111e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3112e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 311322ad0b6aSJaegeuk Kim unsigned int nat_segs; 311422ad0b6aSJaegeuk Kim int err; 3115e05df3b1SJaegeuk Kim 3116e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3117e05df3b1SJaegeuk Kim 3118e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3119e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 312022ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 312122ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 31227ee0eeabSJaegeuk Kim 3123b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 312404d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 312527cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 31269a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 31279a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3128cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3129ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 31302304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 3131e05df3b1SJaegeuk Kim 31328a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 31339a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3134769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3135769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3136e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 313722969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3138e05df3b1SJaegeuk Kim 3139e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3140b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3141b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 3142e05df3b1SJaegeuk Kim 3143e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 314479b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3145e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 314679b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 314779b5793bSAlexandru Gheorghiu GFP_KERNEL); 314879b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 314979b5793bSAlexandru Gheorghiu return -ENOMEM; 3150599a09b2SChao Yu 315122ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 315222ad0b6aSJaegeuk Kim if (err) 315322ad0b6aSJaegeuk Kim return err; 315422ad0b6aSJaegeuk Kim 3155599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3156599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3157599a09b2SChao Yu GFP_KERNEL); 3158599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3159599a09b2SChao Yu return -ENOMEM; 3160599a09b2SChao Yu #endif 3161599a09b2SChao Yu 3162e05df3b1SJaegeuk Kim return 0; 3163e05df3b1SJaegeuk Kim } 3164e05df3b1SJaegeuk Kim 31659f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 31664ac91242SChao Yu { 31674ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3168bb1105e4SJaegeuk Kim int i; 31694ac91242SChao Yu 3170026f0507SKees Cook nm_i->free_nid_bitmap = 31710b6d4ca0SEric Biggers f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *), 3172026f0507SKees Cook nm_i->nat_blocks), 3173026f0507SKees Cook GFP_KERNEL); 31744ac91242SChao Yu if (!nm_i->free_nid_bitmap) 31754ac91242SChao Yu return -ENOMEM; 31764ac91242SChao Yu 3177bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3178bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3179e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 318068c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3181bb1105e4SJaegeuk Kim return -ENOMEM; 3182bb1105e4SJaegeuk Kim } 3183bb1105e4SJaegeuk Kim 3184628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 31854ac91242SChao Yu GFP_KERNEL); 31864ac91242SChao Yu if (!nm_i->nat_block_bitmap) 31874ac91242SChao Yu return -ENOMEM; 3188586d1492SChao Yu 31899d2a789cSKees Cook nm_i->free_nid_count = 31909d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 31919d2a789cSKees Cook nm_i->nat_blocks), 31929d2a789cSKees Cook GFP_KERNEL); 3193586d1492SChao Yu if (!nm_i->free_nid_count) 3194586d1492SChao Yu return -ENOMEM; 31954ac91242SChao Yu return 0; 31964ac91242SChao Yu } 31974ac91242SChao Yu 31984d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3199e05df3b1SJaegeuk Kim { 3200e05df3b1SJaegeuk Kim int err; 3201e05df3b1SJaegeuk Kim 3202acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3203acbf054dSChao Yu GFP_KERNEL); 3204e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3205e05df3b1SJaegeuk Kim return -ENOMEM; 3206e05df3b1SJaegeuk Kim 3207e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3208e05df3b1SJaegeuk Kim if (err) 3209e05df3b1SJaegeuk Kim return err; 3210e05df3b1SJaegeuk Kim 32114ac91242SChao Yu err = init_free_nid_cache(sbi); 32124ac91242SChao Yu if (err) 32134ac91242SChao Yu return err; 32144ac91242SChao Yu 32157041d5d2SChao Yu /* load free nid status from nat_bits table */ 32167041d5d2SChao Yu load_free_nid_bitmap(sbi); 32177041d5d2SChao Yu 3218e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3219e05df3b1SJaegeuk Kim } 3220e05df3b1SJaegeuk Kim 32214d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3222e05df3b1SJaegeuk Kim { 3223e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3224e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3225e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 32267aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3227e05df3b1SJaegeuk Kim nid_t nid = 0; 3228e05df3b1SJaegeuk Kim unsigned int found; 3229e05df3b1SJaegeuk Kim 3230e05df3b1SJaegeuk Kim if (!nm_i) 3231e05df3b1SJaegeuk Kim return; 3232e05df3b1SJaegeuk Kim 3233e05df3b1SJaegeuk Kim /* destroy free nid list */ 3234b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 32359a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3236a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3237b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3238cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3239b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3240e05df3b1SJaegeuk Kim } 32419a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 32429a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 32439a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3244b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3245e05df3b1SJaegeuk Kim 3246e05df3b1SJaegeuk Kim /* destroy nat cache */ 3247b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3248e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3249e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3250e05df3b1SJaegeuk Kim unsigned idx; 32517aed0d45SJaegeuk Kim 3252b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 325322969158SChao Yu for (idx = 0; idx < found; idx++) { 325422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 325522969158SChao Yu list_del(&natvec[idx]->list); 325622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 325722969158SChao Yu 3258b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3259e05df3b1SJaegeuk Kim } 326022969158SChao Yu } 3261a95ba66aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]); 32627aed0d45SJaegeuk Kim 32637aed0d45SJaegeuk Kim /* destroy nat set cache */ 32647aed0d45SJaegeuk Kim nid = 0; 32657aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 32667aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 32677aed0d45SJaegeuk Kim unsigned idx; 32687aed0d45SJaegeuk Kim 32697aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 32707aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 32717aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 32727aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 32737aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 32747aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 32757aed0d45SJaegeuk Kim } 32767aed0d45SJaegeuk Kim } 3277b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3278e05df3b1SJaegeuk Kim 32794ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3280bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3281bb1105e4SJaegeuk Kim int i; 3282bb1105e4SJaegeuk Kim 3283bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3284bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 32855222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3286bb1105e4SJaegeuk Kim } 3287586d1492SChao Yu kvfree(nm_i->free_nid_count); 32884ac91242SChao Yu 32895222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 32905222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3291599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 32925222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3293599a09b2SChao Yu #endif 3294e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3295c8eb7024SChao Yu kfree(nm_i); 3296e05df3b1SJaegeuk Kim } 3297e05df3b1SJaegeuk Kim 32984d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3299e05df3b1SJaegeuk Kim { 330098510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3301e8512d2eSGu Zheng sizeof(struct nat_entry)); 3302e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3303aec71382SChao Yu goto fail; 3304e05df3b1SJaegeuk Kim 330598510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3306e8512d2eSGu Zheng sizeof(struct free_nid)); 3307aec71382SChao Yu if (!free_nid_slab) 3308ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3309aec71382SChao Yu 331098510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3311aec71382SChao Yu sizeof(struct nat_entry_set)); 3312aec71382SChao Yu if (!nat_entry_set_slab) 3313ce3e6d25SMarkus Elfring goto destroy_free_nid; 331450fa53ecSChao Yu 331598510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 331650fa53ecSChao Yu sizeof(struct fsync_node_entry)); 331750fa53ecSChao Yu if (!fsync_node_entry_slab) 331850fa53ecSChao Yu goto destroy_nat_entry_set; 3319e05df3b1SJaegeuk Kim return 0; 3320aec71382SChao Yu 332150fa53ecSChao Yu destroy_nat_entry_set: 332250fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3323ce3e6d25SMarkus Elfring destroy_free_nid: 3324aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3325ce3e6d25SMarkus Elfring destroy_nat_entry: 3326aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3327aec71382SChao Yu fail: 3328aec71382SChao Yu return -ENOMEM; 3329e05df3b1SJaegeuk Kim } 3330e05df3b1SJaegeuk Kim 33314d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3332e05df3b1SJaegeuk Kim { 333350fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3334aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3335e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3336e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3337e05df3b1SJaegeuk Kim } 3338