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" 209e4ded3fSJaegeuk Kim #include "trace.h" 2151dd6249SNamjae Jeon #include <trace/events/f2fs.h> 22e05df3b1SJaegeuk Kim 234d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 24f978f5a0SGu Zheng 25e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 26e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 27aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 2850fa53ecSChao Yu static struct kmem_cache *fsync_node_entry_slab; 29e05df3b1SJaegeuk Kim 30a4f843bdSJaegeuk Kim /* 31a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 32a4f843bdSJaegeuk Kim */ 334d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 34a4f843bdSJaegeuk Kim { 35a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 36a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 37dcbb4c10SJoe Perches f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.", 38a4f843bdSJaegeuk Kim __func__, nid); 3910f966bbSChao Yu return -EFSCORRUPTED; 40a4f843bdSJaegeuk Kim } 41a4f843bdSJaegeuk Kim return 0; 42a4f843bdSJaegeuk Kim } 43a4f843bdSJaegeuk Kim 444d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 45cdfc41c1SJaegeuk Kim { 466fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 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 52cdfc41c1SJaegeuk Kim si_meminfo(&val); 53e5e7ea3cSJaegeuk Kim 54e5e7ea3cSJaegeuk Kim /* only uses low memory */ 55e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 56e5e7ea3cSJaegeuk Kim 57429511cdSChao Yu /* 58429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 59429511cdSChao Yu */ 606fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 619a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 62b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 63e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 646fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 65e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 6609cbfeafSKirill A. Shutemov PAGE_SHIFT; 67e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 68e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 69e589c2c4SJaegeuk Kim res = false; 70a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 71a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 72a1257023SJaegeuk Kim return false; 73a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 74a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 75e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 76e5e7ea3cSJaegeuk Kim int i; 77e5e7ea3cSJaegeuk Kim 7839d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 798f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 808f73cbb7SKinglong Mee sizeof(struct ino_entry); 818f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 82e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 83429511cdSChao Yu } else if (type == EXTENT_CACHE) { 847441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 857441ccefSJaegeuk Kim sizeof(struct extent_tree) + 86429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 8709cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 88429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 8957864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 9057864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 9157864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 9257864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 931e84371fSJaegeuk Kim } else { 941663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 951663cae4SJaegeuk Kim return true; 966fb03f3aSJaegeuk Kim } 976fb03f3aSJaegeuk Kim return res; 98cdfc41c1SJaegeuk Kim } 99cdfc41c1SJaegeuk Kim 100e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 101e05df3b1SJaegeuk Kim { 102e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1035ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 104e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 105aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 106e05df3b1SJaegeuk Kim } 107e05df3b1SJaegeuk Kim ClearPageUptodate(page); 108e05df3b1SJaegeuk Kim } 109e05df3b1SJaegeuk Kim 110e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 111e05df3b1SJaegeuk Kim { 11280551d17SChao Yu return f2fs_get_meta_page_nofail(sbi, current_nat_addr(sbi, nid)); 113e05df3b1SJaegeuk Kim } 114e05df3b1SJaegeuk Kim 115e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 116e05df3b1SJaegeuk Kim { 117e05df3b1SJaegeuk Kim struct page *src_page; 118e05df3b1SJaegeuk Kim struct page *dst_page; 119e05df3b1SJaegeuk Kim pgoff_t dst_off; 120e05df3b1SJaegeuk Kim void *src_addr; 121e05df3b1SJaegeuk Kim void *dst_addr; 122e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 123e05df3b1SJaegeuk Kim 12480551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 125e05df3b1SJaegeuk Kim 126e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 12780551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 128edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 129edc55aafSJaegeuk Kim return src_page; 1304d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1319850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 134e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13509cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 136e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 137e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 138e05df3b1SJaegeuk Kim 139e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 140e05df3b1SJaegeuk Kim 141e05df3b1SJaegeuk Kim return dst_page; 142e05df3b1SJaegeuk Kim } 143e05df3b1SJaegeuk Kim 14412f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 14512f9ef37SYunlei He { 14612f9ef37SYunlei He struct nat_entry *new; 14712f9ef37SYunlei He 14812f9ef37SYunlei He if (no_fail) 1492882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15012f9ef37SYunlei He else 1512882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15212f9ef37SYunlei He if (new) { 15312f9ef37SYunlei He nat_set_nid(new, nid); 15412f9ef37SYunlei He nat_reset_flag(new); 15512f9ef37SYunlei He } 15612f9ef37SYunlei He return new; 15712f9ef37SYunlei He } 15812f9ef37SYunlei He 15912f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 16012f9ef37SYunlei He { 16112f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 16212f9ef37SYunlei He } 16312f9ef37SYunlei He 16412f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16512f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 16612f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 16712f9ef37SYunlei He { 16812f9ef37SYunlei He if (no_fail) 16912f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 17012f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 17112f9ef37SYunlei He return NULL; 17212f9ef37SYunlei He 17312f9ef37SYunlei He if (raw_ne) 17412f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17522969158SChao Yu 17622969158SChao Yu spin_lock(&nm_i->nat_list_lock); 17712f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 17822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 17922969158SChao Yu 18012f9ef37SYunlei He nm_i->nat_cnt++; 18112f9ef37SYunlei He return ne; 18212f9ef37SYunlei He } 18312f9ef37SYunlei He 184e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 185e05df3b1SJaegeuk Kim { 18622969158SChao Yu struct nat_entry *ne; 18722969158SChao Yu 18822969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 18922969158SChao Yu 19022969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 19122969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 19222969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19322969158SChao Yu if (!list_empty(&ne->list)) 19422969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 19522969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 19622969158SChao Yu } 19722969158SChao Yu 19822969158SChao Yu return ne; 199e05df3b1SJaegeuk Kim } 200e05df3b1SJaegeuk Kim 201e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 202e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 203e05df3b1SJaegeuk Kim { 204e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 205e05df3b1SJaegeuk Kim } 206e05df3b1SJaegeuk Kim 207e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 208e05df3b1SJaegeuk Kim { 209e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 210e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 21112f9ef37SYunlei He __free_nat_entry(e); 212e05df3b1SJaegeuk Kim } 213e05df3b1SJaegeuk Kim 214780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 215309cc2b6SJaegeuk Kim struct nat_entry *ne) 216309cc2b6SJaegeuk Kim { 217309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 218309cc2b6SJaegeuk Kim struct nat_entry_set *head; 219309cc2b6SJaegeuk Kim 220309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 221309cc2b6SJaegeuk Kim if (!head) { 22280c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 223309cc2b6SJaegeuk Kim 224309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 225309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 226309cc2b6SJaegeuk Kim head->set = set; 227309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2289be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 229309cc2b6SJaegeuk Kim } 230780de47cSChao Yu return head; 231780de47cSChao Yu } 232780de47cSChao Yu 233780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 234780de47cSChao Yu struct nat_entry *ne) 235780de47cSChao Yu { 236780de47cSChao Yu struct nat_entry_set *head; 237780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 238780de47cSChao Yu 239780de47cSChao Yu if (!new_ne) 240780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 241780de47cSChao Yu 242780de47cSChao Yu /* 243780de47cSChao Yu * update entry_cnt in below condition: 244780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 245780de47cSChao Yu * 2. update old block address to new one; 246780de47cSChao Yu */ 247780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 248780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 249780de47cSChao Yu head->entry_cnt++; 250780de47cSChao Yu 251780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 252febeca6dSChao Yu 253febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 254febeca6dSChao Yu goto refresh_list; 255febeca6dSChao Yu 256309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 257309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 258febeca6dSChao Yu refresh_list: 25922969158SChao Yu spin_lock(&nm_i->nat_list_lock); 260780de47cSChao Yu if (new_ne) 261febeca6dSChao Yu list_del_init(&ne->list); 262febeca6dSChao Yu else 263febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 26422969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 265309cc2b6SJaegeuk Kim } 266309cc2b6SJaegeuk Kim 267309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2680b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 269309cc2b6SJaegeuk Kim { 27022969158SChao Yu spin_lock(&nm_i->nat_list_lock); 271309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 27222969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 27322969158SChao Yu 274309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2750b28b71eSKinglong Mee set->entry_cnt--; 276309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 277309cc2b6SJaegeuk Kim } 278309cc2b6SJaegeuk Kim 279309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 280309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 281309cc2b6SJaegeuk Kim { 282309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 283309cc2b6SJaegeuk Kim start, nr); 284309cc2b6SJaegeuk Kim } 285309cc2b6SJaegeuk Kim 28650fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 28750fa53ecSChao Yu { 28850fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 28950fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 29050fa53ecSChao Yu } 29150fa53ecSChao Yu 29250fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 29350fa53ecSChao Yu { 29450fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 29550fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 29650fa53ecSChao Yu sbi->fsync_seg_id = 0; 29750fa53ecSChao Yu sbi->fsync_node_num = 0; 29850fa53ecSChao Yu } 29950fa53ecSChao Yu 30050fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 30150fa53ecSChao Yu struct page *page) 30250fa53ecSChao Yu { 30350fa53ecSChao Yu struct fsync_node_entry *fn; 30450fa53ecSChao Yu unsigned long flags; 30550fa53ecSChao Yu unsigned int seq_id; 30650fa53ecSChao Yu 30750fa53ecSChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, GFP_NOFS); 30850fa53ecSChao Yu 30950fa53ecSChao Yu get_page(page); 31050fa53ecSChao Yu fn->page = page; 31150fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 31250fa53ecSChao Yu 31350fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 31450fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 31550fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 31650fa53ecSChao Yu seq_id = fn->seq_id; 31750fa53ecSChao Yu sbi->fsync_node_num++; 31850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 31950fa53ecSChao Yu 32050fa53ecSChao Yu return seq_id; 32150fa53ecSChao Yu } 32250fa53ecSChao Yu 32350fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 32450fa53ecSChao Yu { 32550fa53ecSChao Yu struct fsync_node_entry *fn; 32650fa53ecSChao Yu unsigned long flags; 32750fa53ecSChao Yu 32850fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 32950fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 33050fa53ecSChao Yu if (fn->page == page) { 33150fa53ecSChao Yu list_del(&fn->list); 33250fa53ecSChao Yu sbi->fsync_node_num--; 33350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 33450fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 33550fa53ecSChao Yu put_page(page); 33650fa53ecSChao Yu return; 33750fa53ecSChao Yu } 33850fa53ecSChao Yu } 33950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34050fa53ecSChao Yu f2fs_bug_on(sbi, 1); 34150fa53ecSChao Yu } 34250fa53ecSChao Yu 34350fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 34450fa53ecSChao Yu { 34550fa53ecSChao Yu unsigned long flags; 34650fa53ecSChao Yu 34750fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 34850fa53ecSChao Yu sbi->fsync_seg_id = 0; 34950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 35050fa53ecSChao Yu } 35150fa53ecSChao Yu 3524d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3532dcf51abSJaegeuk Kim { 3542dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3552dcf51abSJaegeuk Kim struct nat_entry *e; 3562dcf51abSJaegeuk Kim bool need = false; 3572dcf51abSJaegeuk Kim 358b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 3592dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3602dcf51abSJaegeuk Kim if (e) { 3612dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3622dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3632dcf51abSJaegeuk Kim need = true; 3642dcf51abSJaegeuk Kim } 365b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 3662dcf51abSJaegeuk Kim return need; 3672dcf51abSJaegeuk Kim } 3682dcf51abSJaegeuk Kim 3694d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 370e05df3b1SJaegeuk Kim { 371e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 372e05df3b1SJaegeuk Kim struct nat_entry *e; 37388bd02c9SJaegeuk Kim bool is_cp = true; 374e05df3b1SJaegeuk Kim 375b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 376e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3777ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 37888bd02c9SJaegeuk Kim is_cp = false; 379b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 380e05df3b1SJaegeuk Kim return is_cp; 381e05df3b1SJaegeuk Kim } 382e05df3b1SJaegeuk Kim 3834d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 384b6fe5873SJaegeuk Kim { 385b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 386b6fe5873SJaegeuk Kim struct nat_entry *e; 38788bd02c9SJaegeuk Kim bool need_update = true; 388b6fe5873SJaegeuk Kim 389b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 39088bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 39188bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 39288bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 39388bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 39488bd02c9SJaegeuk Kim need_update = false; 395b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 39688bd02c9SJaegeuk Kim return need_update; 397b6fe5873SJaegeuk Kim } 398b6fe5873SJaegeuk Kim 39912f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4001515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 401e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 402e05df3b1SJaegeuk Kim { 4031515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 40412f9ef37SYunlei He struct nat_entry *new, *e; 4059be32d72SJaegeuk Kim 40612f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 40712f9ef37SYunlei He if (!new) 40812f9ef37SYunlei He return; 40912f9ef37SYunlei He 41012f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 411e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 41212f9ef37SYunlei He if (!e) 41312f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 41412f9ef37SYunlei He else 4150c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4160c0b471eSEric Biggers nat_get_blkaddr(e) != 4170c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4181515aef0SChao Yu nat_get_version(e) != ne->version); 41912f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 42012f9ef37SYunlei He if (e != new) 42112f9ef37SYunlei He __free_nat_entry(new); 422e05df3b1SJaegeuk Kim } 423e05df3b1SJaegeuk Kim 424e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 425479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 426e05df3b1SJaegeuk Kim { 427e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 428e05df3b1SJaegeuk Kim struct nat_entry *e; 42912f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 4309be32d72SJaegeuk Kim 431b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 432e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 433e05df3b1SJaegeuk Kim if (!e) { 43412f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4355c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4369850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 437e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 438e05df3b1SJaegeuk Kim /* 439e05df3b1SJaegeuk Kim * when nid is reallocated, 440e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 441e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 442e05df3b1SJaegeuk Kim */ 4435c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4449850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 445e05df3b1SJaegeuk Kim } 44612f9ef37SYunlei He /* let's free early to reduce memory consumption */ 44712f9ef37SYunlei He if (e != new) 44812f9ef37SYunlei He __free_nat_entry(new); 449e05df3b1SJaegeuk Kim 450e05df3b1SJaegeuk Kim /* sanity check */ 4519850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4529850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 453e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4549850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 455e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 45693770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 457e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 458e05df3b1SJaegeuk Kim 459e1c42045Sarter97 /* increment version no as node is removed */ 460e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 461e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 462e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 463e05df3b1SJaegeuk Kim } 464e05df3b1SJaegeuk Kim 465e05df3b1SJaegeuk Kim /* change address */ 466e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 46793770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 46888bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 469e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 470479f40c4SJaegeuk Kim 471479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 472d5b692b7SChao Yu if (ni->nid != ni->ino) 473479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 47488bd02c9SJaegeuk Kim if (e) { 47588bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 47688bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 47788bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 47888bd02c9SJaegeuk Kim } 479b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 480e05df3b1SJaegeuk Kim } 481e05df3b1SJaegeuk Kim 4824d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 483e05df3b1SJaegeuk Kim { 484e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 4851b38dc8eSJaegeuk Kim int nr = nr_shrink; 486e05df3b1SJaegeuk Kim 487b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 488b873b798SJaegeuk Kim return 0; 489e05df3b1SJaegeuk Kim 49022969158SChao Yu spin_lock(&nm_i->nat_list_lock); 49122969158SChao Yu while (nr_shrink) { 492e05df3b1SJaegeuk Kim struct nat_entry *ne; 49322969158SChao Yu 49422969158SChao Yu if (list_empty(&nm_i->nat_entries)) 49522969158SChao Yu break; 49622969158SChao Yu 497e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 498e05df3b1SJaegeuk Kim struct nat_entry, list); 49922969158SChao Yu list_del(&ne->list); 50022969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 50122969158SChao Yu 502e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 503e05df3b1SJaegeuk Kim nr_shrink--; 50422969158SChao Yu 50522969158SChao Yu spin_lock(&nm_i->nat_list_lock); 506e05df3b1SJaegeuk Kim } 50722969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 50822969158SChao Yu 509b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 5101b38dc8eSJaegeuk Kim return nr - nr_shrink; 511e05df3b1SJaegeuk Kim } 512e05df3b1SJaegeuk Kim 5137735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 5144d57b86dSChao Yu struct node_info *ni) 515e05df3b1SJaegeuk Kim { 516e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 517e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 518b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 519e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 520e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 521e05df3b1SJaegeuk Kim struct page *page = NULL; 522e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 523e05df3b1SJaegeuk Kim struct nat_entry *e; 52466a82d1fSYunlei He pgoff_t index; 52593770ab7SChao Yu block_t blkaddr; 526e05df3b1SJaegeuk Kim int i; 527e05df3b1SJaegeuk Kim 528e05df3b1SJaegeuk Kim ni->nid = nid; 529e05df3b1SJaegeuk Kim 530e05df3b1SJaegeuk Kim /* Check nat cache */ 531b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 532e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 533e05df3b1SJaegeuk Kim if (e) { 534e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 535e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 536e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 537b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5387735730dSChao Yu return 0; 5391515aef0SChao Yu } 540e05df3b1SJaegeuk Kim 5413547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 5423547ea96SJaegeuk Kim 543e05df3b1SJaegeuk Kim /* Check current segment summary */ 544b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5454d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 546e05df3b1SJaegeuk Kim if (i >= 0) { 547dfc08a12SChao Yu ne = nat_in_journal(journal, i); 548e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 549e05df3b1SJaegeuk Kim } 550b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 55166a82d1fSYunlei He if (i >= 0) { 55266a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 553e05df3b1SJaegeuk Kim goto cache; 55466a82d1fSYunlei He } 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 55766a82d1fSYunlei He index = current_nat_addr(sbi, nid); 55866a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 55966a82d1fSYunlei He 5604d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5617735730dSChao Yu if (IS_ERR(page)) 5627735730dSChao Yu return PTR_ERR(page); 5637735730dSChao Yu 564e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 565e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 566e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 567e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 568e05df3b1SJaegeuk Kim cache: 56993770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 57093770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 57193770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 57293770ab7SChao Yu return -EFAULT; 57393770ab7SChao Yu 574e05df3b1SJaegeuk Kim /* cache nat entry */ 5751515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 5767735730dSChao Yu return 0; 577e05df3b1SJaegeuk Kim } 578e05df3b1SJaegeuk Kim 57979344efbSJaegeuk Kim /* 58079344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 58179344efbSJaegeuk Kim */ 5824d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 58379344efbSJaegeuk Kim { 58479344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 58579344efbSJaegeuk Kim struct blk_plug plug; 58679344efbSJaegeuk Kim int i, end; 58779344efbSJaegeuk Kim nid_t nid; 58879344efbSJaegeuk Kim 58979344efbSJaegeuk Kim blk_start_plug(&plug); 59079344efbSJaegeuk Kim 59179344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 59279344efbSJaegeuk Kim end = start + n; 59379344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 59479344efbSJaegeuk Kim for (i = start; i < end; i++) { 59579344efbSJaegeuk Kim nid = get_nid(parent, i, false); 5964d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 59779344efbSJaegeuk Kim } 59879344efbSJaegeuk Kim 59979344efbSJaegeuk Kim blk_finish_plug(&plug); 60079344efbSJaegeuk Kim } 60179344efbSJaegeuk Kim 6024d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6033cf45747SChao Yu { 6043cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 605d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 606d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 607d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6083cf45747SChao Yu int cur_level = dn->cur_level; 6093cf45747SChao Yu int max_level = dn->max_level; 6103cf45747SChao Yu pgoff_t base = 0; 6113cf45747SChao Yu 6123cf45747SChao Yu if (!dn->max_level) 6133cf45747SChao Yu return pgofs + 1; 6143cf45747SChao Yu 6153cf45747SChao Yu while (max_level-- > cur_level) 6163cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6173cf45747SChao Yu 6183cf45747SChao Yu switch (dn->max_level) { 6193cf45747SChao Yu case 3: 6203cf45747SChao Yu base += 2 * indirect_blks; 6210a4c9265SGustavo A. R. Silva /* fall through */ 6223cf45747SChao Yu case 2: 6233cf45747SChao Yu base += 2 * direct_blks; 6240a4c9265SGustavo A. R. Silva /* fall through */ 6253cf45747SChao Yu case 1: 6263cf45747SChao Yu base += direct_index; 6273cf45747SChao Yu break; 6283cf45747SChao Yu default: 6293cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6303cf45747SChao Yu } 6313cf45747SChao Yu 6323cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6333cf45747SChao Yu } 6343cf45747SChao Yu 6350a8165d7SJaegeuk Kim /* 636e05df3b1SJaegeuk Kim * The maximum depth is four. 637e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 638e05df3b1SJaegeuk Kim */ 63981ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 640de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 641e05df3b1SJaegeuk Kim { 64281ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 643d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 644e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 645d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 646e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 647e05df3b1SJaegeuk Kim int n = 0; 648e05df3b1SJaegeuk Kim int level = 0; 649e05df3b1SJaegeuk Kim 650e05df3b1SJaegeuk Kim noffset[0] = 0; 651e05df3b1SJaegeuk Kim 652e05df3b1SJaegeuk Kim if (block < direct_index) { 65325c0a6e5SNamjae Jeon offset[n] = block; 654e05df3b1SJaegeuk Kim goto got; 655e05df3b1SJaegeuk Kim } 656e05df3b1SJaegeuk Kim block -= direct_index; 657e05df3b1SJaegeuk Kim if (block < direct_blks) { 658e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 659e05df3b1SJaegeuk Kim noffset[n] = 1; 66025c0a6e5SNamjae Jeon offset[n] = block; 661e05df3b1SJaegeuk Kim level = 1; 662e05df3b1SJaegeuk Kim goto got; 663e05df3b1SJaegeuk Kim } 664e05df3b1SJaegeuk Kim block -= direct_blks; 665e05df3b1SJaegeuk Kim if (block < direct_blks) { 666e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 667e05df3b1SJaegeuk Kim noffset[n] = 2; 66825c0a6e5SNamjae Jeon offset[n] = block; 669e05df3b1SJaegeuk Kim level = 1; 670e05df3b1SJaegeuk Kim goto got; 671e05df3b1SJaegeuk Kim } 672e05df3b1SJaegeuk Kim block -= direct_blks; 673e05df3b1SJaegeuk Kim if (block < indirect_blks) { 674e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 675e05df3b1SJaegeuk Kim noffset[n] = 3; 676e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 677e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 67825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 679e05df3b1SJaegeuk Kim level = 2; 680e05df3b1SJaegeuk Kim goto got; 681e05df3b1SJaegeuk Kim } 682e05df3b1SJaegeuk Kim block -= indirect_blks; 683e05df3b1SJaegeuk Kim if (block < indirect_blks) { 684e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 685e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 686e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 687e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 68825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 689e05df3b1SJaegeuk Kim level = 2; 690e05df3b1SJaegeuk Kim goto got; 691e05df3b1SJaegeuk Kim } 692e05df3b1SJaegeuk Kim block -= indirect_blks; 693e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 694e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 695e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 696e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 697e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 698e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 699e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 700e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 701e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 702e05df3b1SJaegeuk Kim offset[n - 1]; 70325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 704e05df3b1SJaegeuk Kim level = 3; 705e05df3b1SJaegeuk Kim goto got; 706e05df3b1SJaegeuk Kim } else { 707adb6dc19SJaegeuk Kim return -E2BIG; 708e05df3b1SJaegeuk Kim } 709e05df3b1SJaegeuk Kim got: 710e05df3b1SJaegeuk Kim return level; 711e05df3b1SJaegeuk Kim } 712e05df3b1SJaegeuk Kim 713e05df3b1SJaegeuk Kim /* 714e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7154f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7167a88ddb5SChao Yu * f2fs_unlock_op() only if mode is set with ALLOC_NODE. 717e05df3b1SJaegeuk Kim */ 7184d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 719e05df3b1SJaegeuk Kim { 7204081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 721e05df3b1SJaegeuk Kim struct page *npage[4]; 722f1a3b98eSJaegeuk Kim struct page *parent = NULL; 723e05df3b1SJaegeuk Kim int offset[4]; 724e05df3b1SJaegeuk Kim unsigned int noffset[4]; 725e05df3b1SJaegeuk Kim nid_t nids[4]; 7263cf45747SChao Yu int level, i = 0; 727e05df3b1SJaegeuk Kim int err = 0; 728e05df3b1SJaegeuk Kim 72981ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 730adb6dc19SJaegeuk Kim if (level < 0) 731adb6dc19SJaegeuk Kim return level; 732e05df3b1SJaegeuk Kim 733e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7341646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7351646cfacSJaegeuk Kim 7361646cfacSJaegeuk Kim if (!npage[0]) { 7374d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 738e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 739e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7401646cfacSJaegeuk Kim } 741f1a3b98eSJaegeuk Kim 742f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 743f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 74476629165SJaegeuk Kim err = -ENOENT; 745f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 746f1a3b98eSJaegeuk Kim goto release_out; 747f1a3b98eSJaegeuk Kim } 748f1a3b98eSJaegeuk Kim 749e05df3b1SJaegeuk Kim parent = npage[0]; 75052c2db3fSChangman Lee if (level != 0) 751e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 752e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 753e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 754e05df3b1SJaegeuk Kim 755e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 756e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 757e05df3b1SJaegeuk Kim bool done = false; 758e05df3b1SJaegeuk Kim 759266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 760e05df3b1SJaegeuk Kim /* alloc new node */ 7614d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 762e05df3b1SJaegeuk Kim err = -ENOSPC; 763e05df3b1SJaegeuk Kim goto release_pages; 764e05df3b1SJaegeuk Kim } 765e05df3b1SJaegeuk Kim 766e05df3b1SJaegeuk Kim dn->nid = nids[i]; 7674d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 768e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 7694d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 770e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 771e05df3b1SJaegeuk Kim goto release_pages; 772e05df3b1SJaegeuk Kim } 773e05df3b1SJaegeuk Kim 774e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 7754d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 776e05df3b1SJaegeuk Kim done = true; 777266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 7784d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 779e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 780e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 781e05df3b1SJaegeuk Kim goto release_pages; 782e05df3b1SJaegeuk Kim } 783e05df3b1SJaegeuk Kim done = true; 784e05df3b1SJaegeuk Kim } 785e05df3b1SJaegeuk Kim if (i == 1) { 786e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 787e05df3b1SJaegeuk Kim unlock_page(parent); 788e05df3b1SJaegeuk Kim } else { 789e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 790e05df3b1SJaegeuk Kim } 791e05df3b1SJaegeuk Kim 792e05df3b1SJaegeuk Kim if (!done) { 7934d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 794e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 795e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 796e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 797e05df3b1SJaegeuk Kim goto release_out; 798e05df3b1SJaegeuk Kim } 799e05df3b1SJaegeuk Kim } 800e05df3b1SJaegeuk Kim if (i < level) { 801e05df3b1SJaegeuk Kim parent = npage[i]; 802e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 803e05df3b1SJaegeuk Kim } 804e05df3b1SJaegeuk Kim } 805e05df3b1SJaegeuk Kim dn->nid = nids[level]; 806e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 807e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 808a2ced1ceSChao Yu dn->data_blkaddr = f2fs_data_blkaddr(dn); 809e05df3b1SJaegeuk Kim return 0; 810e05df3b1SJaegeuk Kim 811e05df3b1SJaegeuk Kim release_pages: 812e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 813e05df3b1SJaegeuk Kim if (i > 1) 814e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 815e05df3b1SJaegeuk Kim release_out: 816e05df3b1SJaegeuk Kim dn->inode_page = NULL; 817e05df3b1SJaegeuk Kim dn->node_page = NULL; 8183cf45747SChao Yu if (err == -ENOENT) { 8193cf45747SChao Yu dn->cur_level = i; 8203cf45747SChao Yu dn->max_level = level; 8210a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8223cf45747SChao Yu } 823e05df3b1SJaegeuk Kim return err; 824e05df3b1SJaegeuk Kim } 825e05df3b1SJaegeuk Kim 8267735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 827e05df3b1SJaegeuk Kim { 8284081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 829e05df3b1SJaegeuk Kim struct node_info ni; 8307735730dSChao Yu int err; 8310ea295ddSPan Bian pgoff_t index; 832e05df3b1SJaegeuk Kim 8337735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8347735730dSChao Yu if (err) 8357735730dSChao Yu return err; 836e05df3b1SJaegeuk Kim 837e05df3b1SJaegeuk Kim /* Deallocate node address */ 8384d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 839000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 840479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 841e05df3b1SJaegeuk Kim 842e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 8434d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 844e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 8450f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 846e05df3b1SJaegeuk Kim } 847000519f2SChao Yu 848e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 849caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 850e05df3b1SJaegeuk Kim 8510ea295ddSPan Bian index = dn->node_page->index; 852e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 853bf39c00aSJaegeuk Kim 854bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 8550ea295ddSPan Bian index, index); 856bf39c00aSJaegeuk Kim 857e05df3b1SJaegeuk Kim dn->node_page = NULL; 85851dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 8597735730dSChao Yu 8607735730dSChao Yu return 0; 861e05df3b1SJaegeuk Kim } 862e05df3b1SJaegeuk Kim 863e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 864e05df3b1SJaegeuk Kim { 865e05df3b1SJaegeuk Kim struct page *page; 8667735730dSChao Yu int err; 867e05df3b1SJaegeuk Kim 868e05df3b1SJaegeuk Kim if (dn->nid == 0) 869e05df3b1SJaegeuk Kim return 1; 870e05df3b1SJaegeuk Kim 871e05df3b1SJaegeuk Kim /* get direct node */ 8724d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 87345586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 874e05df3b1SJaegeuk Kim return 1; 875e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 876e05df3b1SJaegeuk Kim return PTR_ERR(page); 877e05df3b1SJaegeuk Kim 878e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 879e05df3b1SJaegeuk Kim dn->node_page = page; 880e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 8814d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 8827735730dSChao Yu err = truncate_node(dn); 8837735730dSChao Yu if (err) 8847735730dSChao Yu return err; 8857735730dSChao Yu 886e05df3b1SJaegeuk Kim return 1; 887e05df3b1SJaegeuk Kim } 888e05df3b1SJaegeuk Kim 889e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 890e05df3b1SJaegeuk Kim int ofs, int depth) 891e05df3b1SJaegeuk Kim { 892e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 893e05df3b1SJaegeuk Kim struct page *page; 894e05df3b1SJaegeuk Kim struct f2fs_node *rn; 895e05df3b1SJaegeuk Kim nid_t child_nid; 896e05df3b1SJaegeuk Kim unsigned int child_nofs; 897e05df3b1SJaegeuk Kim int freed = 0; 898e05df3b1SJaegeuk Kim int i, ret; 899e05df3b1SJaegeuk Kim 900e05df3b1SJaegeuk Kim if (dn->nid == 0) 901e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 902e05df3b1SJaegeuk Kim 90351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 90451dd6249SNamjae Jeon 9054d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 90651dd6249SNamjae Jeon if (IS_ERR(page)) { 90751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 908e05df3b1SJaegeuk Kim return PTR_ERR(page); 90951dd6249SNamjae Jeon } 910e05df3b1SJaegeuk Kim 9114d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 91279344efbSJaegeuk Kim 91345590710SGu Zheng rn = F2FS_NODE(page); 914e05df3b1SJaegeuk Kim if (depth < 3) { 915e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 916e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 917e05df3b1SJaegeuk Kim if (child_nid == 0) 918e05df3b1SJaegeuk Kim continue; 919e05df3b1SJaegeuk Kim rdn.nid = child_nid; 920e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 921e05df3b1SJaegeuk Kim if (ret < 0) 922e05df3b1SJaegeuk Kim goto out_err; 92312719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 92493bae099SJaegeuk Kim dn->node_changed = true; 925e05df3b1SJaegeuk Kim } 926e05df3b1SJaegeuk Kim } else { 927e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 928e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 929e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 930e05df3b1SJaegeuk Kim if (child_nid == 0) { 931e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 932e05df3b1SJaegeuk Kim continue; 933e05df3b1SJaegeuk Kim } 934e05df3b1SJaegeuk Kim rdn.nid = child_nid; 935e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 936e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 93712719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 93893bae099SJaegeuk Kim dn->node_changed = true; 939e05df3b1SJaegeuk Kim child_nofs += ret; 940e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 941e05df3b1SJaegeuk Kim goto out_err; 942e05df3b1SJaegeuk Kim } 943e05df3b1SJaegeuk Kim } 944e05df3b1SJaegeuk Kim freed = child_nofs; 945e05df3b1SJaegeuk Kim } 946e05df3b1SJaegeuk Kim 947e05df3b1SJaegeuk Kim if (!ofs) { 948e05df3b1SJaegeuk Kim /* remove current indirect node */ 949e05df3b1SJaegeuk Kim dn->node_page = page; 9507735730dSChao Yu ret = truncate_node(dn); 9517735730dSChao Yu if (ret) 9527735730dSChao Yu goto out_err; 953e05df3b1SJaegeuk Kim freed++; 954e05df3b1SJaegeuk Kim } else { 955e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 956e05df3b1SJaegeuk Kim } 95751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 958e05df3b1SJaegeuk Kim return freed; 959e05df3b1SJaegeuk Kim 960e05df3b1SJaegeuk Kim out_err: 961e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 96251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 963e05df3b1SJaegeuk Kim return ret; 964e05df3b1SJaegeuk Kim } 965e05df3b1SJaegeuk Kim 966e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 967e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 968e05df3b1SJaegeuk Kim { 969e05df3b1SJaegeuk Kim struct page *pages[2]; 970e05df3b1SJaegeuk Kim nid_t nid[3]; 971e05df3b1SJaegeuk Kim nid_t child_nid; 972e05df3b1SJaegeuk Kim int err = 0; 973e05df3b1SJaegeuk Kim int i; 974e05df3b1SJaegeuk Kim int idx = depth - 2; 975e05df3b1SJaegeuk Kim 976e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 977e05df3b1SJaegeuk Kim if (!nid[0]) 978e05df3b1SJaegeuk Kim return 0; 979e05df3b1SJaegeuk Kim 980e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 981a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 982e1c42045Sarter97 /* reference count'll be increased */ 9834d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 984e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 985e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 986a225dca3Sshifei10.ge idx = i - 1; 987e05df3b1SJaegeuk Kim goto fail; 988e05df3b1SJaegeuk Kim } 989e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 990e05df3b1SJaegeuk Kim } 991e05df3b1SJaegeuk Kim 9924d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 99379344efbSJaegeuk Kim 994e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 995a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 996e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 997e05df3b1SJaegeuk Kim if (!child_nid) 998e05df3b1SJaegeuk Kim continue; 999e05df3b1SJaegeuk Kim dn->nid = child_nid; 1000e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1001e05df3b1SJaegeuk Kim if (err < 0) 1002e05df3b1SJaegeuk Kim goto fail; 100312719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 100493bae099SJaegeuk Kim dn->node_changed = true; 1005e05df3b1SJaegeuk Kim } 1006e05df3b1SJaegeuk Kim 1007a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1008e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1009e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10107735730dSChao Yu err = truncate_node(dn); 10117735730dSChao Yu if (err) 10127735730dSChao Yu goto fail; 1013e05df3b1SJaegeuk Kim } else { 1014e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1015e05df3b1SJaegeuk Kim } 1016e05df3b1SJaegeuk Kim offset[idx]++; 1017a225dca3Sshifei10.ge offset[idx + 1] = 0; 1018a225dca3Sshifei10.ge idx--; 1019e05df3b1SJaegeuk Kim fail: 1020a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1021e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 102251dd6249SNamjae Jeon 102351dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 102451dd6249SNamjae Jeon 1025e05df3b1SJaegeuk Kim return err; 1026e05df3b1SJaegeuk Kim } 1027e05df3b1SJaegeuk Kim 10280a8165d7SJaegeuk Kim /* 1029e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1030e05df3b1SJaegeuk Kim */ 10314d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1032e05df3b1SJaegeuk Kim { 10334081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1034e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1035e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10367dd690c8SJaegeuk Kim unsigned int nofs = 0; 103758bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1038e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1039e05df3b1SJaegeuk Kim struct page *page; 1040e05df3b1SJaegeuk Kim 104151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 104251dd6249SNamjae Jeon 104381ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 1044adb6dc19SJaegeuk Kim if (level < 0) 1045adb6dc19SJaegeuk Kim return level; 1046ff373558SJaegeuk Kim 10474d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 104851dd6249SNamjae Jeon if (IS_ERR(page)) { 104951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1050e05df3b1SJaegeuk Kim return PTR_ERR(page); 105151dd6249SNamjae Jeon } 1052e05df3b1SJaegeuk Kim 1053e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1054e05df3b1SJaegeuk Kim unlock_page(page); 1055e05df3b1SJaegeuk Kim 105658bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1057e05df3b1SJaegeuk Kim switch (level) { 1058e05df3b1SJaegeuk Kim case 0: 1059e05df3b1SJaegeuk Kim case 1: 1060e05df3b1SJaegeuk Kim nofs = noffset[1]; 1061e05df3b1SJaegeuk Kim break; 1062e05df3b1SJaegeuk Kim case 2: 1063e05df3b1SJaegeuk Kim nofs = noffset[1]; 1064e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1065e05df3b1SJaegeuk Kim goto skip_partial; 106658bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1067e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1068e05df3b1SJaegeuk Kim goto fail; 1069e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1070e05df3b1SJaegeuk Kim break; 1071e05df3b1SJaegeuk Kim case 3: 1072e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1073e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1074e05df3b1SJaegeuk Kim goto skip_partial; 107558bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1076e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1077e05df3b1SJaegeuk Kim goto fail; 1078e05df3b1SJaegeuk Kim break; 1079e05df3b1SJaegeuk Kim default: 1080e05df3b1SJaegeuk Kim BUG(); 1081e05df3b1SJaegeuk Kim } 1082e05df3b1SJaegeuk Kim 1083e05df3b1SJaegeuk Kim skip_partial: 1084e05df3b1SJaegeuk Kim while (cont) { 108558bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1086e05df3b1SJaegeuk Kim switch (offset[0]) { 1087e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1088e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1089e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1090e05df3b1SJaegeuk Kim break; 1091e05df3b1SJaegeuk Kim 1092e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1093e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1094e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1095e05df3b1SJaegeuk Kim break; 1096e05df3b1SJaegeuk Kim 1097e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1098e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1099e05df3b1SJaegeuk Kim cont = 0; 1100e05df3b1SJaegeuk Kim break; 1101e05df3b1SJaegeuk Kim 1102e05df3b1SJaegeuk Kim default: 1103e05df3b1SJaegeuk Kim BUG(); 1104e05df3b1SJaegeuk Kim } 1105e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1106e05df3b1SJaegeuk Kim goto fail; 1107e05df3b1SJaegeuk Kim if (offset[1] == 0 && 110858bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1109e05df3b1SJaegeuk Kim lock_page(page); 1110ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1111bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 111258bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1113e05df3b1SJaegeuk Kim set_page_dirty(page); 1114e05df3b1SJaegeuk Kim unlock_page(page); 1115e05df3b1SJaegeuk Kim } 1116e05df3b1SJaegeuk Kim offset[1] = 0; 1117e05df3b1SJaegeuk Kim offset[0]++; 1118e05df3b1SJaegeuk Kim nofs += err; 1119e05df3b1SJaegeuk Kim } 1120e05df3b1SJaegeuk Kim fail: 1121e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 112251dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1123e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1124e05df3b1SJaegeuk Kim } 1125e05df3b1SJaegeuk Kim 11269c77f754SJaegeuk Kim /* caller must lock inode page */ 11274d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11284f16fb0fSJaegeuk Kim { 11294081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11304f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11314f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11324f16fb0fSJaegeuk Kim struct page *npage; 11337735730dSChao Yu int err; 11344f16fb0fSJaegeuk Kim 11354f16fb0fSJaegeuk Kim if (!nid) 11364f16fb0fSJaegeuk Kim return 0; 11374f16fb0fSJaegeuk Kim 11384d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11394f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11404f16fb0fSJaegeuk Kim return PTR_ERR(npage); 11414f16fb0fSJaegeuk Kim 11427735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 11437735730dSChao Yu err = truncate_node(&dn); 11447735730dSChao Yu if (err) { 11457735730dSChao Yu f2fs_put_page(npage, 1); 11467735730dSChao Yu return err; 11477735730dSChao Yu } 11487735730dSChao Yu 1149205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 115065985d93SJaegeuk Kim 11514f16fb0fSJaegeuk Kim return 0; 11524f16fb0fSJaegeuk Kim } 11534f16fb0fSJaegeuk Kim 115439936837SJaegeuk Kim /* 11554f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 11564f4124d0SChao Yu * f2fs_unlock_op(). 115739936837SJaegeuk Kim */ 11584d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1159e05df3b1SJaegeuk Kim { 1160e05df3b1SJaegeuk Kim struct dnode_of_data dn; 116113ec7297SChao Yu int err; 1162e05df3b1SJaegeuk Kim 1163c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 11644d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 116513ec7297SChao Yu if (err) 116613ec7297SChao Yu return err; 1167e05df3b1SJaegeuk Kim 11684d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 116913ec7297SChao Yu if (err) { 1170c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 117113ec7297SChao Yu return err; 1172e05df3b1SJaegeuk Kim } 1173c2e69583SJaegeuk Kim 1174c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1175c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1176c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 11774d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1178c2e69583SJaegeuk Kim 1179e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 11808d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 11818d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 11828d714f8aSJaegeuk Kim return -EIO; 11838d714f8aSJaegeuk Kim } 11848b6810f8SChao Yu 11858b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1186097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1187097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1188dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 11898b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 11908b6810f8SChao Yu } 1191c2e69583SJaegeuk Kim 1192c2e69583SJaegeuk Kim /* will put inode & node pages */ 11937735730dSChao Yu err = truncate_node(&dn); 11947735730dSChao Yu if (err) { 11957735730dSChao Yu f2fs_put_dnode(&dn); 11967735730dSChao Yu return err; 11977735730dSChao Yu } 119813ec7297SChao Yu return 0; 1199e05df3b1SJaegeuk Kim } 1200e05df3b1SJaegeuk Kim 12014d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1202e05df3b1SJaegeuk Kim { 1203e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1204e05df3b1SJaegeuk Kim 1205e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1206e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 120744a83ff6SJaegeuk Kim 120844a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12094d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1210e05df3b1SJaegeuk Kim } 1211e05df3b1SJaegeuk Kim 12124d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1213e05df3b1SJaegeuk Kim { 12144081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 121525cc5d3bSJaegeuk Kim struct node_info new_ni; 1216e05df3b1SJaegeuk Kim struct page *page; 1217e05df3b1SJaegeuk Kim int err; 1218e05df3b1SJaegeuk Kim 121991942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1220e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1221e05df3b1SJaegeuk Kim 1222300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1223e05df3b1SJaegeuk Kim if (!page) 1224e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1225e05df3b1SJaegeuk Kim 12260abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12279c02740cSJaegeuk Kim goto fail; 12280abd675eSChao Yu 122925cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 12307735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 12317735730dSChao Yu if (err) { 12327735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12337735730dSChao Yu goto fail; 12347735730dSChao Yu } 123525cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 123625cc5d3bSJaegeuk Kim #endif 123725cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1238e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 123925cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 124025cc5d3bSJaegeuk Kim new_ni.flag = 0; 124125cc5d3bSJaegeuk Kim new_ni.version = 0; 1242479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 12439c02740cSJaegeuk Kim 1244bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 12459c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1246c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1247237c0790SJaegeuk Kim if (!PageUptodate(page)) 12489c02740cSJaegeuk Kim SetPageUptodate(page); 124912719ae1SJaegeuk Kim if (set_page_dirty(page)) 125012719ae1SJaegeuk Kim dn->node_changed = true; 1251e05df3b1SJaegeuk Kim 12524bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1253205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1254479bd73aSJaegeuk Kim 1255e05df3b1SJaegeuk Kim if (ofs == 0) 1256e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1257e05df3b1SJaegeuk Kim return page; 1258e05df3b1SJaegeuk Kim 1259e05df3b1SJaegeuk Kim fail: 126071e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1261e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1262e05df3b1SJaegeuk Kim return ERR_PTR(err); 1263e05df3b1SJaegeuk Kim } 1264e05df3b1SJaegeuk Kim 126556ae674cSJaegeuk Kim /* 126656ae674cSJaegeuk Kim * Caller should do after getting the following values. 126756ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 126886531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 126956ae674cSJaegeuk Kim */ 127004d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1271e05df3b1SJaegeuk Kim { 12724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1273e05df3b1SJaegeuk Kim struct node_info ni; 1274cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 127505ca3632SJaegeuk Kim .sbi = sbi, 1276cf04e8ebSJaegeuk Kim .type = NODE, 127704d328deSMike Christie .op = REQ_OP_READ, 127804d328deSMike Christie .op_flags = op_flags, 127905ca3632SJaegeuk Kim .page = page, 12804375a336SJaegeuk Kim .encrypted_page = NULL, 1281cf04e8ebSJaegeuk Kim }; 12827735730dSChao Yu int err; 1283e05df3b1SJaegeuk Kim 128454c55c4eSWeichao Guo if (PageUptodate(page)) { 1285b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1286b42b179bSChao Yu ClearPageUptodate(page); 128710f966bbSChao Yu return -EFSBADCRC; 1288b42b179bSChao Yu } 12893bdad3c7SJaegeuk Kim return LOCKED_PAGE; 129054c55c4eSWeichao Guo } 12913bdad3c7SJaegeuk Kim 12927735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 12937735730dSChao Yu if (err) 12947735730dSChao Yu return err; 1295e05df3b1SJaegeuk Kim 129683a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 129783a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 12982bca1e23SJaegeuk Kim ClearPageUptodate(page); 1299e05df3b1SJaegeuk Kim return -ENOENT; 1300393ff91fSJaegeuk Kim } 1301393ff91fSJaegeuk Kim 13027a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 130305ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1304e05df3b1SJaegeuk Kim } 1305e05df3b1SJaegeuk Kim 13060a8165d7SJaegeuk Kim /* 1307e05df3b1SJaegeuk Kim * Readahead a node page 1308e05df3b1SJaegeuk Kim */ 13094d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1310e05df3b1SJaegeuk Kim { 1311e05df3b1SJaegeuk Kim struct page *apage; 131256ae674cSJaegeuk Kim int err; 1313e05df3b1SJaegeuk Kim 1314e8458725SChao Yu if (!nid) 1315e8458725SChao Yu return; 13164d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1317a4f843bdSJaegeuk Kim return; 1318e8458725SChao Yu 13195ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1320999270deSFan Li if (apage) 1321393ff91fSJaegeuk Kim return; 1322e05df3b1SJaegeuk Kim 1323300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1324e05df3b1SJaegeuk Kim if (!apage) 1325e05df3b1SJaegeuk Kim return; 1326e05df3b1SJaegeuk Kim 132770246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 132886531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1329e05df3b1SJaegeuk Kim } 1330e05df3b1SJaegeuk Kim 133117a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 13320e022ea8SChao Yu struct page *parent, int start) 1333e05df3b1SJaegeuk Kim { 133456ae674cSJaegeuk Kim struct page *page; 133556ae674cSJaegeuk Kim int err; 13364aa69d56SJaegeuk Kim 13374aa69d56SJaegeuk Kim if (!nid) 13384aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 13394d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1340a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1341afcb7ca0SJaegeuk Kim repeat: 1342300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1343e05df3b1SJaegeuk Kim if (!page) 1344e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1345e05df3b1SJaegeuk Kim 134670fd7614SChristoph Hellwig err = read_node_page(page, 0); 134786531d6bSJaegeuk Kim if (err < 0) { 134886531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1349e05df3b1SJaegeuk Kim return ERR_PTR(err); 1350e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 13511f258ec1SChao Yu err = 0; 1352e1c51b9fSChao Yu goto page_hit; 135386531d6bSJaegeuk Kim } 1354aaf96075SJaegeuk Kim 13550e022ea8SChao Yu if (parent) 13564d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 13570e022ea8SChao Yu 1358e1c51b9fSChao Yu lock_page(page); 1359e1c51b9fSChao Yu 13604ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1361afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1362afcb7ca0SJaegeuk Kim goto repeat; 1363afcb7ca0SJaegeuk Kim } 13641563ac75SChao Yu 13651f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 13661f258ec1SChao Yu err = -EIO; 13671563ac75SChao Yu goto out_err; 13681f258ec1SChao Yu } 1369704956ecSChao Yu 1370704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 137110f966bbSChao Yu err = -EFSBADCRC; 1372704956ecSChao Yu goto out_err; 1373704956ecSChao Yu } 1374e1c51b9fSChao Yu page_hit: 13750c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 1376dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 13771f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 13781f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 13791f258ec1SChao Yu next_blkaddr_of_node(page)); 13801f258ec1SChao Yu err = -EINVAL; 13810c9df7fbSYunlong Song out_err: 1382ee605234SJaegeuk Kim ClearPageUptodate(page); 13830c9df7fbSYunlong Song f2fs_put_page(page, 1); 13841f258ec1SChao Yu return ERR_PTR(err); 13850c9df7fbSYunlong Song } 1386e05df3b1SJaegeuk Kim return page; 1387e05df3b1SJaegeuk Kim } 1388e05df3b1SJaegeuk Kim 13894d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 13900e022ea8SChao Yu { 13910e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 13920e022ea8SChao Yu } 13930e022ea8SChao Yu 13944d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1395e05df3b1SJaegeuk Kim { 13964081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 13970e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1398e05df3b1SJaegeuk Kim 13990e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1400e05df3b1SJaegeuk Kim } 1401e05df3b1SJaegeuk Kim 14022049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14032049d4fcSJaegeuk Kim { 14042049d4fcSJaegeuk Kim struct inode *inode; 14052049d4fcSJaegeuk Kim struct page *page; 14060f3311a8SChao Yu int ret; 14072049d4fcSJaegeuk Kim 14082049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14092049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14102049d4fcSJaegeuk Kim if (!inode) 14112049d4fcSJaegeuk Kim return; 14122049d4fcSJaegeuk Kim 141301eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 141401eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14152049d4fcSJaegeuk Kim if (!page) 14162049d4fcSJaegeuk Kim goto iput_out; 14172049d4fcSJaegeuk Kim 14182049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14192049d4fcSJaegeuk Kim goto page_out; 14202049d4fcSJaegeuk Kim 14212049d4fcSJaegeuk Kim if (!PageDirty(page)) 14222049d4fcSJaegeuk Kim goto page_out; 14232049d4fcSJaegeuk Kim 14242049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14252049d4fcSJaegeuk Kim goto page_out; 14262049d4fcSJaegeuk Kim 14270f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14282049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 14294d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 14300f3311a8SChao Yu if (ret) 14312049d4fcSJaegeuk Kim set_page_dirty(page); 14322049d4fcSJaegeuk Kim page_out: 14334a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 14342049d4fcSJaegeuk Kim iput_out: 14352049d4fcSJaegeuk Kim iput(inode); 14362049d4fcSJaegeuk Kim } 14372049d4fcSJaegeuk Kim 1438608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1439e05df3b1SJaegeuk Kim { 1440028a63a6SJan Kara pgoff_t index; 1441e05df3b1SJaegeuk Kim struct pagevec pvec; 1442608514deSJaegeuk Kim struct page *last_page = NULL; 1443028a63a6SJan Kara int nr_pages; 144452681375SJaegeuk Kim 144586679820SMel Gorman pagevec_init(&pvec); 144652681375SJaegeuk Kim index = 0; 144752681375SJaegeuk Kim 1448028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 144967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1450028a63a6SJan Kara int i; 145152681375SJaegeuk Kim 145252681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 145352681375SJaegeuk Kim struct page *page = pvec.pages[i]; 145452681375SJaegeuk Kim 145552681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1456608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 145752681375SJaegeuk Kim pagevec_release(&pvec); 1458608514deSJaegeuk Kim return ERR_PTR(-EIO); 145952681375SJaegeuk Kim } 146052681375SJaegeuk Kim 146152681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 146252681375SJaegeuk Kim continue; 146352681375SJaegeuk Kim if (ino_of_node(page) != ino) 146452681375SJaegeuk Kim continue; 146552681375SJaegeuk Kim 146652681375SJaegeuk Kim lock_page(page); 146752681375SJaegeuk Kim 146852681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 146952681375SJaegeuk Kim continue_unlock: 147052681375SJaegeuk Kim unlock_page(page); 147152681375SJaegeuk Kim continue; 147252681375SJaegeuk Kim } 147352681375SJaegeuk Kim if (ino_of_node(page) != ino) 147452681375SJaegeuk Kim goto continue_unlock; 147552681375SJaegeuk Kim 147652681375SJaegeuk Kim if (!PageDirty(page)) { 147752681375SJaegeuk Kim /* someone wrote it for us */ 147852681375SJaegeuk Kim goto continue_unlock; 147952681375SJaegeuk Kim } 148052681375SJaegeuk Kim 1481608514deSJaegeuk Kim if (last_page) 1482608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1483608514deSJaegeuk Kim 1484608514deSJaegeuk Kim get_page(page); 1485608514deSJaegeuk Kim last_page = page; 1486608514deSJaegeuk Kim unlock_page(page); 1487608514deSJaegeuk Kim } 1488608514deSJaegeuk Kim pagevec_release(&pvec); 1489608514deSJaegeuk Kim cond_resched(); 1490608514deSJaegeuk Kim } 1491608514deSJaegeuk Kim return last_page; 1492608514deSJaegeuk Kim } 1493608514deSJaegeuk Kim 1494d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1495b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 149650fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1497faa24895SJaegeuk Kim { 1498faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1499faa24895SJaegeuk Kim nid_t nid; 1500faa24895SJaegeuk Kim struct node_info ni; 1501faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1502faa24895SJaegeuk Kim .sbi = sbi, 150339d787beSChao Yu .ino = ino_of_node(page), 1504faa24895SJaegeuk Kim .type = NODE, 1505faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1506faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1507faa24895SJaegeuk Kim .page = page, 1508faa24895SJaegeuk Kim .encrypted_page = NULL, 1509d68f735bSJaegeuk Kim .submitted = false, 1510b0af6d49SChao Yu .io_type = io_type, 1511578c6478SYufen Yu .io_wbc = wbc, 1512faa24895SJaegeuk Kim }; 151350fa53ecSChao Yu unsigned int seq; 1514faa24895SJaegeuk Kim 1515faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1516faa24895SJaegeuk Kim 1517868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1518868de613SJaegeuk Kim goto redirty_out; 1519db198ae0SChao Yu 1520faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1521faa24895SJaegeuk Kim goto redirty_out; 1522faa24895SJaegeuk Kim 1523100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1524100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1525fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1526fd8c8cafSChao Yu goto redirty_out; 1527fd8c8cafSChao Yu 1528faa24895SJaegeuk Kim /* get old block addr of this node page */ 1529faa24895SJaegeuk Kim nid = nid_of_node(page); 1530faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1531faa24895SJaegeuk Kim 15327735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 15337735730dSChao Yu goto redirty_out; 15347735730dSChao Yu 1535faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1536faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1537faa24895SJaegeuk Kim goto redirty_out; 1538faa24895SJaegeuk Kim } else { 1539faa24895SJaegeuk Kim down_read(&sbi->node_write); 1540faa24895SJaegeuk Kim } 1541faa24895SJaegeuk Kim 1542faa24895SJaegeuk Kim /* This page is already truncated */ 1543faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1544faa24895SJaegeuk Kim ClearPageUptodate(page); 1545faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1546faa24895SJaegeuk Kim up_read(&sbi->node_write); 1547faa24895SJaegeuk Kim unlock_page(page); 1548faa24895SJaegeuk Kim return 0; 1549faa24895SJaegeuk Kim } 1550faa24895SJaegeuk Kim 1551c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 155293770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 155393770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 155489d13c38SJaegeuk Kim up_read(&sbi->node_write); 1555c9b60788SChao Yu goto redirty_out; 155689d13c38SJaegeuk Kim } 1557c9b60788SChao Yu 1558e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1559e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1560e7c75ab0SJaegeuk Kim 1561dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 156250fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 156350fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 156450fa53ecSChao Yu if (seq_id) 156550fa53ecSChao Yu *seq_id = seq; 156650fa53ecSChao Yu } 156750fa53ecSChao Yu 1568dc5a9412SChao Yu set_page_writeback(page); 1569dc5a9412SChao Yu ClearPageError(page); 1570dc5a9412SChao Yu 1571faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 15724d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1573faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1574faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1575faa24895SJaegeuk Kim up_read(&sbi->node_write); 1576faa24895SJaegeuk Kim 1577d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1578bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1579d68f735bSJaegeuk Kim submitted = NULL; 1580d68f735bSJaegeuk Kim } 1581faa24895SJaegeuk Kim 1582faa24895SJaegeuk Kim unlock_page(page); 1583faa24895SJaegeuk Kim 1584d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1585b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1586d68f735bSJaegeuk Kim submitted = NULL; 1587d68f735bSJaegeuk Kim } 1588d68f735bSJaegeuk Kim if (submitted) 1589d68f735bSJaegeuk Kim *submitted = fio.submitted; 1590faa24895SJaegeuk Kim 1591401db79fSYunlong Song if (do_balance) 1592401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1593faa24895SJaegeuk Kim return 0; 1594faa24895SJaegeuk Kim 1595faa24895SJaegeuk Kim redirty_out: 1596faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1597faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1598faa24895SJaegeuk Kim } 1599faa24895SJaegeuk Kim 160048018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1601f15194fcSYunlei He { 160248018b4cSChao Yu int err = 0; 160348018b4cSChao Yu 1604f15194fcSYunlei He if (gc_type == FG_GC) { 1605f15194fcSYunlei He struct writeback_control wbc = { 1606f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1607f15194fcSYunlei He .nr_to_write = 1, 1608f15194fcSYunlei He .for_reclaim = 0, 1609f15194fcSYunlei He }; 1610f15194fcSYunlei He 1611bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16128d64d365SChao Yu 16138d64d365SChao Yu set_page_dirty(node_page); 16148d64d365SChao Yu 161548018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 161648018b4cSChao Yu err = -EAGAIN; 1617f15194fcSYunlei He goto out_page; 161848018b4cSChao Yu } 1619f15194fcSYunlei He 1620f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 162148018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 162248018b4cSChao Yu err = -EAGAIN; 1623f15194fcSYunlei He unlock_page(node_page); 162448018b4cSChao Yu } 1625f15194fcSYunlei He goto release_page; 1626f15194fcSYunlei He } else { 1627f15194fcSYunlei He /* set page dirty and write it */ 1628f15194fcSYunlei He if (!PageWriteback(node_page)) 1629f15194fcSYunlei He set_page_dirty(node_page); 1630f15194fcSYunlei He } 1631f15194fcSYunlei He out_page: 1632f15194fcSYunlei He unlock_page(node_page); 1633f15194fcSYunlei He release_page: 1634f15194fcSYunlei He f2fs_put_page(node_page, 0); 163548018b4cSChao Yu return err; 1636f15194fcSYunlei He } 1637f15194fcSYunlei He 1638faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1639faa24895SJaegeuk Kim struct writeback_control *wbc) 1640faa24895SJaegeuk Kim { 164150fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 164250fa53ecSChao Yu FS_NODE_IO, NULL); 1643faa24895SJaegeuk Kim } 1644faa24895SJaegeuk Kim 16454d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 164650fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 164750fa53ecSChao Yu unsigned int *seq_id) 1648608514deSJaegeuk Kim { 1649028a63a6SJan Kara pgoff_t index; 1650608514deSJaegeuk Kim struct pagevec pvec; 1651608514deSJaegeuk Kim int ret = 0; 1652608514deSJaegeuk Kim struct page *last_page = NULL; 1653608514deSJaegeuk Kim bool marked = false; 165426de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1655028a63a6SJan Kara int nr_pages; 1656bab475c5SChao Yu int nwritten = 0; 1657608514deSJaegeuk Kim 1658608514deSJaegeuk Kim if (atomic) { 1659608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1660608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1661608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1662608514deSJaegeuk Kim } 1663608514deSJaegeuk Kim retry: 166486679820SMel Gorman pagevec_init(&pvec); 1665608514deSJaegeuk Kim index = 0; 1666608514deSJaegeuk Kim 1667028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 166867fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1669028a63a6SJan Kara int i; 1670608514deSJaegeuk Kim 1671608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1672608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1673d68f735bSJaegeuk Kim bool submitted = false; 1674608514deSJaegeuk Kim 1675608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1676608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1677608514deSJaegeuk Kim pagevec_release(&pvec); 16789de69279SChao Yu ret = -EIO; 16799de69279SChao Yu goto out; 1680608514deSJaegeuk Kim } 1681608514deSJaegeuk Kim 1682608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1683608514deSJaegeuk Kim continue; 1684608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1685608514deSJaegeuk Kim continue; 1686608514deSJaegeuk Kim 1687608514deSJaegeuk Kim lock_page(page); 1688608514deSJaegeuk Kim 1689608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1690608514deSJaegeuk Kim continue_unlock: 1691608514deSJaegeuk Kim unlock_page(page); 1692608514deSJaegeuk Kim continue; 1693608514deSJaegeuk Kim } 1694608514deSJaegeuk Kim if (ino_of_node(page) != ino) 169552681375SJaegeuk Kim goto continue_unlock; 169652681375SJaegeuk Kim 1697608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1698608514deSJaegeuk Kim /* someone wrote it for us */ 1699608514deSJaegeuk Kim goto continue_unlock; 1700608514deSJaegeuk Kim } 1701608514deSJaegeuk Kim 1702bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1703608514deSJaegeuk Kim 1704d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1705d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1706d29fd172SJaegeuk Kim 1707608514deSJaegeuk Kim if (!atomic || page == last_page) { 170852681375SJaegeuk Kim set_fsync_mark(page, 1); 170926de9b11SJaegeuk Kim if (IS_INODE(page)) { 171026de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 171126de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17124d57b86dSChao Yu f2fs_update_inode(inode, page); 171352681375SJaegeuk Kim set_dentry_mark(page, 17144d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 171526de9b11SJaegeuk Kim } 1716608514deSJaegeuk Kim /* may be written by other thread */ 1717608514deSJaegeuk Kim if (!PageDirty(page)) 1718608514deSJaegeuk Kim set_page_dirty(page); 1719608514deSJaegeuk Kim } 1720608514deSJaegeuk Kim 1721608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1722608514deSJaegeuk Kim goto continue_unlock; 172352681375SJaegeuk Kim 1724e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1725d68f735bSJaegeuk Kim page == last_page, 1726b0af6d49SChao Yu &submitted, wbc, true, 172750fa53ecSChao Yu FS_NODE_IO, seq_id); 1728c267ec15SJaegeuk Kim if (ret) { 172952681375SJaegeuk Kim unlock_page(page); 1730608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1731608514deSJaegeuk Kim break; 1732d68f735bSJaegeuk Kim } else if (submitted) { 1733bab475c5SChao Yu nwritten++; 1734608514deSJaegeuk Kim } 17353f5f4959SChao Yu 1736608514deSJaegeuk Kim if (page == last_page) { 1737608514deSJaegeuk Kim f2fs_put_page(page, 0); 1738608514deSJaegeuk Kim marked = true; 173952681375SJaegeuk Kim break; 174052681375SJaegeuk Kim } 1741c267ec15SJaegeuk Kim } 174252681375SJaegeuk Kim pagevec_release(&pvec); 174352681375SJaegeuk Kim cond_resched(); 174452681375SJaegeuk Kim 1745608514deSJaegeuk Kim if (ret || marked) 174652681375SJaegeuk Kim break; 174752681375SJaegeuk Kim } 1748608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1749dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1750608514deSJaegeuk Kim ino, last_page->index); 1751608514deSJaegeuk Kim lock_page(last_page); 1752bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1753608514deSJaegeuk Kim set_page_dirty(last_page); 1754608514deSJaegeuk Kim unlock_page(last_page); 1755608514deSJaegeuk Kim goto retry; 1756608514deSJaegeuk Kim } 17579de69279SChao Yu out: 1758bab475c5SChao Yu if (nwritten) 1759bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1760c267ec15SJaegeuk Kim return ret ? -EIO: 0; 176152681375SJaegeuk Kim } 176252681375SJaegeuk Kim 1763052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1764052a82d8SChao Yu { 1765052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1766052a82d8SChao Yu bool clean; 1767052a82d8SChao Yu 1768052a82d8SChao Yu if (inode->i_ino != ino) 1769052a82d8SChao Yu return 0; 1770052a82d8SChao Yu 1771052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1772052a82d8SChao Yu return 0; 1773052a82d8SChao Yu 1774052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1775052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1776052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1777052a82d8SChao Yu 1778052a82d8SChao Yu if (clean) 1779052a82d8SChao Yu return 0; 1780052a82d8SChao Yu 1781052a82d8SChao Yu inode = igrab(inode); 1782052a82d8SChao Yu if (!inode) 1783052a82d8SChao Yu return 0; 1784052a82d8SChao Yu return 1; 1785052a82d8SChao Yu } 1786052a82d8SChao Yu 1787052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1788052a82d8SChao Yu { 1789052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1790052a82d8SChao Yu struct inode *inode; 1791052a82d8SChao Yu nid_t ino = ino_of_node(page); 1792052a82d8SChao Yu 1793052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1794052a82d8SChao Yu if (!inode) 1795052a82d8SChao Yu return false; 1796052a82d8SChao Yu 1797052a82d8SChao Yu f2fs_update_inode(inode, page); 1798052a82d8SChao Yu unlock_page(page); 1799052a82d8SChao Yu 1800052a82d8SChao Yu iput(inode); 1801052a82d8SChao Yu return true; 1802052a82d8SChao Yu } 1803052a82d8SChao Yu 18044d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 18054d57b86dSChao Yu struct writeback_control *wbc, 1806b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 180752681375SJaegeuk Kim { 1808028a63a6SJan Kara pgoff_t index; 180952681375SJaegeuk Kim struct pagevec pvec; 181052681375SJaegeuk Kim int step = 0; 181112bb0a8fSJaegeuk Kim int nwritten = 0; 18123f5f4959SChao Yu int ret = 0; 1813c29fd0c0SChao Yu int nr_pages, done = 0; 1814e05df3b1SJaegeuk Kim 181586679820SMel Gorman pagevec_init(&pvec); 1816e05df3b1SJaegeuk Kim 1817e05df3b1SJaegeuk Kim next_step: 1818e05df3b1SJaegeuk Kim index = 0; 1819e05df3b1SJaegeuk Kim 1820c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1821c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1822028a63a6SJan Kara int i; 1823e05df3b1SJaegeuk Kim 1824e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1825e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1826d68f735bSJaegeuk Kim bool submitted = false; 1827052a82d8SChao Yu bool may_dirty = true; 1828e05df3b1SJaegeuk Kim 1829c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1830c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1831c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1832c29fd0c0SChao Yu done = 1; 1833c29fd0c0SChao Yu break; 1834c29fd0c0SChao Yu } 1835c29fd0c0SChao Yu 1836e05df3b1SJaegeuk Kim /* 1837e05df3b1SJaegeuk Kim * flushing sequence with step: 1838e05df3b1SJaegeuk Kim * 0. indirect nodes 1839e05df3b1SJaegeuk Kim * 1. dentry dnodes 1840e05df3b1SJaegeuk Kim * 2. file dnodes 1841e05df3b1SJaegeuk Kim */ 1842e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1843e05df3b1SJaegeuk Kim continue; 1844e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1845e05df3b1SJaegeuk Kim is_cold_node(page))) 1846e05df3b1SJaegeuk Kim continue; 1847e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1848e05df3b1SJaegeuk Kim !is_cold_node(page))) 1849e05df3b1SJaegeuk Kim continue; 18509a4cbc9eSChao Yu lock_node: 18514b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 18524b270a8cSChao Yu lock_page(page); 18534b270a8cSChao Yu else if (!trylock_page(page)) 1854e05df3b1SJaegeuk Kim continue; 1855e05df3b1SJaegeuk Kim 18564ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1857e05df3b1SJaegeuk Kim continue_unlock: 1858e05df3b1SJaegeuk Kim unlock_page(page); 1859e05df3b1SJaegeuk Kim continue; 1860e05df3b1SJaegeuk Kim } 1861e05df3b1SJaegeuk Kim 1862e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1863e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1864e05df3b1SJaegeuk Kim goto continue_unlock; 1865e05df3b1SJaegeuk Kim } 1866e05df3b1SJaegeuk Kim 18672049d4fcSJaegeuk Kim /* flush inline_data */ 186852681375SJaegeuk Kim if (is_inline_node(page)) { 18692049d4fcSJaegeuk Kim clear_inline_node(page); 18702049d4fcSJaegeuk Kim unlock_page(page); 18712049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 18729a4cbc9eSChao Yu goto lock_node; 18732049d4fcSJaegeuk Kim } 18742049d4fcSJaegeuk Kim 1875052a82d8SChao Yu /* flush dirty inode */ 1876052a82d8SChao Yu if (IS_INODE(page) && may_dirty) { 1877052a82d8SChao Yu may_dirty = false; 1878052a82d8SChao Yu if (flush_dirty_inode(page)) 1879052a82d8SChao Yu goto lock_node; 1880052a82d8SChao Yu } 1881052a82d8SChao Yu 1882bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1883fa3d2bdfSJaegeuk Kim 1884e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1885e05df3b1SJaegeuk Kim goto continue_unlock; 1886e05df3b1SJaegeuk Kim 1887e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1888e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 188952746519SJaegeuk Kim 1890401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 189150fa53ecSChao Yu wbc, do_balance, io_type, NULL); 1892d68f735bSJaegeuk Kim if (ret) 189352746519SJaegeuk Kim unlock_page(page); 1894d68f735bSJaegeuk Kim else if (submitted) 18953f5f4959SChao Yu nwritten++; 1896e05df3b1SJaegeuk Kim 1897e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1898e05df3b1SJaegeuk Kim break; 1899e05df3b1SJaegeuk Kim } 1900e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1901e05df3b1SJaegeuk Kim cond_resched(); 1902e05df3b1SJaegeuk Kim 1903e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1904e05df3b1SJaegeuk Kim step = 2; 1905e05df3b1SJaegeuk Kim break; 1906e05df3b1SJaegeuk Kim } 1907e05df3b1SJaegeuk Kim } 1908e05df3b1SJaegeuk Kim 1909e05df3b1SJaegeuk Kim if (step < 2) { 1910100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1911100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 1912fd8c8cafSChao Yu goto out; 1913e05df3b1SJaegeuk Kim step++; 1914e05df3b1SJaegeuk Kim goto next_step; 1915e05df3b1SJaegeuk Kim } 1916fd8c8cafSChao Yu out: 19173f5f4959SChao Yu if (nwritten) 1918b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1919db198ae0SChao Yu 1920db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1921db198ae0SChao Yu return -EIO; 19223f5f4959SChao Yu return ret; 1923e05df3b1SJaegeuk Kim } 1924e05df3b1SJaegeuk Kim 192550fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 192650fa53ecSChao Yu unsigned int seq_id) 1927cfe58f9dSJaegeuk Kim { 192850fa53ecSChao Yu struct fsync_node_entry *fn; 192950fa53ecSChao Yu struct page *page; 193050fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 193150fa53ecSChao Yu unsigned long flags; 193250fa53ecSChao Yu unsigned int cur_seq_id = 0; 1933280db3c8SMiklos Szeredi int ret2, ret = 0; 1934cfe58f9dSJaegeuk Kim 193550fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 193650fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 193750fa53ecSChao Yu if (list_empty(head)) { 193850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 193950fa53ecSChao Yu break; 194050fa53ecSChao Yu } 194150fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 194250fa53ecSChao Yu if (fn->seq_id > seq_id) { 194350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 194450fa53ecSChao Yu break; 194550fa53ecSChao Yu } 194650fa53ecSChao Yu cur_seq_id = fn->seq_id; 194750fa53ecSChao Yu page = fn->page; 194850fa53ecSChao Yu get_page(page); 194950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 19504ef51a8fSJaegeuk Kim 1951bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 1952cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1953cfe58f9dSJaegeuk Kim ret = -EIO; 195450fa53ecSChao Yu 195550fa53ecSChao Yu put_page(page); 195650fa53ecSChao Yu 195750fa53ecSChao Yu if (ret) 195850fa53ecSChao Yu break; 1959cfe58f9dSJaegeuk Kim } 1960cfe58f9dSJaegeuk Kim 1961280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1962cfe58f9dSJaegeuk Kim if (!ret) 1963cfe58f9dSJaegeuk Kim ret = ret2; 196450fa53ecSChao Yu 1965cfe58f9dSJaegeuk Kim return ret; 1966cfe58f9dSJaegeuk Kim } 1967cfe58f9dSJaegeuk Kim 1968e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1969e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1970e05df3b1SJaegeuk Kim { 19714081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 19729dfa1bafSJaegeuk Kim struct blk_plug plug; 197350c8cdb3SJaegeuk Kim long diff; 1974e05df3b1SJaegeuk Kim 19750771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 19760771fcc7SChao Yu goto skip_write; 19770771fcc7SChao Yu 19784660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 19794660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1980e05df3b1SJaegeuk Kim 1981a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 1982812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 1983812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 1984812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 1985d3baf95dSJaegeuk Kim goto skip_write; 1986a7fdffbdSJaegeuk Kim 1987c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1988c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1989c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1990c29fd0c0SChao Yu goto skip_write; 1991c29fd0c0SChao Yu 1992d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1993d31c7c3fSYunlei He 199450c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 19959dfa1bafSJaegeuk Kim blk_start_plug(&plug); 19964d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 19979dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 199850c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1999c29fd0c0SChao Yu 2000c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2001c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2002e05df3b1SJaegeuk Kim return 0; 2003d3baf95dSJaegeuk Kim 2004d3baf95dSJaegeuk Kim skip_write: 2005d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2006d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2007d3baf95dSJaegeuk Kim return 0; 2008e05df3b1SJaegeuk Kim } 2009e05df3b1SJaegeuk Kim 2010e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 2011e05df3b1SJaegeuk Kim { 201226c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 201326c6b887SJaegeuk Kim 2014237c0790SJaegeuk Kim if (!PageUptodate(page)) 2015e05df3b1SJaegeuk Kim SetPageUptodate(page); 201654c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 201754c55c4eSWeichao Guo if (IS_INODE(page)) 201854c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 201954c55c4eSWeichao Guo #endif 2020e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 2021b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 20224081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 2023240a5915SChao Yu f2fs_set_page_private(page, 0); 20249e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 2025e05df3b1SJaegeuk Kim return 1; 2026e05df3b1SJaegeuk Kim } 2027e05df3b1SJaegeuk Kim return 0; 2028e05df3b1SJaegeuk Kim } 2029e05df3b1SJaegeuk Kim 20300a8165d7SJaegeuk Kim /* 2031e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2032e05df3b1SJaegeuk Kim */ 2033e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2034e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2035e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2036e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 2037487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 2038487261f3SChao Yu .releasepage = f2fs_release_page, 20395b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 20405b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 20415b7a487cSWeichao Guo #endif 2042e05df3b1SJaegeuk Kim }; 2043e05df3b1SJaegeuk Kim 20448a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 20458a7ed66aSJaegeuk Kim nid_t n) 2046e05df3b1SJaegeuk Kim { 20478a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 20483aa770a9SNamjae Jeon } 2049e05df3b1SJaegeuk Kim 20509a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2051a0761f63SFan Li struct free_nid *i, enum nid_state state) 2052e05df3b1SJaegeuk Kim { 2053b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2054b8559dc2SChao Yu 2055eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 2056eb0aa4b8SJaegeuk Kim if (err) 2057eb0aa4b8SJaegeuk Kim return err; 2058eb0aa4b8SJaegeuk Kim 20599a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20609a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 20619a4ffdf5SChao Yu if (state == FREE_NID) 20629a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2063eb0aa4b8SJaegeuk Kim return 0; 2064b8559dc2SChao Yu } 2065b8559dc2SChao Yu 20669a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2067a0761f63SFan Li struct free_nid *i, enum nid_state state) 2068b8559dc2SChao Yu { 2069b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2070b8559dc2SChao Yu 20719a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20729a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 20739a4ffdf5SChao Yu if (state == FREE_NID) 2074e05df3b1SJaegeuk Kim list_del(&i->list); 20758a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2076e05df3b1SJaegeuk Kim } 2077e05df3b1SJaegeuk Kim 2078a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2079a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2080a0761f63SFan Li { 2081a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2082a0761f63SFan Li 2083a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2084a0761f63SFan Li i->state = dst_state; 2085a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2086a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2087a0761f63SFan Li 2088a0761f63SFan Li switch (dst_state) { 2089a0761f63SFan Li case PREALLOC_NID: 2090a0761f63SFan Li list_del(&i->list); 2091a0761f63SFan Li break; 2092a0761f63SFan Li case FREE_NID: 2093a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2094a0761f63SFan Li break; 2095a0761f63SFan Li default: 2096a0761f63SFan Li BUG_ON(1); 2097a0761f63SFan Li } 2098a0761f63SFan Li } 2099a0761f63SFan Li 21005921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 21015921aaa1SLiFan bool set, bool build) 21025921aaa1SLiFan { 21035921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 21045921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 21055921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 21065921aaa1SLiFan 21075921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 21085921aaa1SLiFan return; 21095921aaa1SLiFan 21105921aaa1SLiFan if (set) { 21115921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 21125921aaa1SLiFan return; 21135921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 21145921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 21155921aaa1SLiFan } else { 21165921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 21175921aaa1SLiFan return; 21185921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 21195921aaa1SLiFan if (!build) 21205921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 21215921aaa1SLiFan } 21225921aaa1SLiFan } 21235921aaa1SLiFan 21244ac91242SChao Yu /* return if the nid is recognized as free */ 21255921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 21265921aaa1SLiFan nid_t nid, bool build, bool update) 2127e05df3b1SJaegeuk Kim { 21286fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 212930a61ddfSChao Yu struct free_nid *i, *e; 213059bbd474SJaegeuk Kim struct nat_entry *ne; 213130a61ddfSChao Yu int err = -EINVAL; 213230a61ddfSChao Yu bool ret = false; 21339198acebSJaegeuk Kim 21349198acebSJaegeuk Kim /* 0 nid should not be used */ 2135cfb271d4SChao Yu if (unlikely(nid == 0)) 21364ac91242SChao Yu return false; 213759bbd474SJaegeuk Kim 2138626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2139626bcf2bSChao Yu return false; 2140626bcf2bSChao Yu 21417bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 2142e05df3b1SJaegeuk Kim i->nid = nid; 21439a4ffdf5SChao Yu i->state = FREE_NID; 2144e05df3b1SJaegeuk Kim 21455921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2146769ec6e5SJaegeuk Kim 2147b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 214830a61ddfSChao Yu 214930a61ddfSChao Yu if (build) { 215030a61ddfSChao Yu /* 215130a61ddfSChao Yu * Thread A Thread B 215230a61ddfSChao Yu * - f2fs_create 215330a61ddfSChao Yu * - f2fs_new_inode 21544d57b86dSChao Yu * - f2fs_alloc_nid 21559a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 215630a61ddfSChao Yu * - f2fs_balance_fs_bg 21574d57b86dSChao Yu * - f2fs_build_free_nids 21584d57b86dSChao Yu * - __f2fs_build_free_nids 215930a61ddfSChao Yu * - scan_nat_page 216030a61ddfSChao Yu * - add_free_nid 216130a61ddfSChao Yu * - __lookup_nat_cache 216230a61ddfSChao Yu * - f2fs_add_link 21634d57b86dSChao Yu * - f2fs_init_inode_metadata 21644d57b86dSChao Yu * - f2fs_new_inode_page 21654d57b86dSChao Yu * - f2fs_new_node_page 216630a61ddfSChao Yu * - set_node_addr 21674d57b86dSChao Yu * - f2fs_alloc_nid_done 21689a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 21699a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 217030a61ddfSChao Yu */ 217130a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 217230a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 217330a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 217430a61ddfSChao Yu goto err_out; 217530a61ddfSChao Yu 217630a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 217730a61ddfSChao Yu if (e) { 21789a4ffdf5SChao Yu if (e->state == FREE_NID) 217930a61ddfSChao Yu ret = true; 218030a61ddfSChao Yu goto err_out; 218130a61ddfSChao Yu } 218230a61ddfSChao Yu } 218330a61ddfSChao Yu ret = true; 2184a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 218530a61ddfSChao Yu err_out: 21865921aaa1SLiFan if (update) { 21875921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 21885921aaa1SLiFan if (!build) 21895921aaa1SLiFan nm_i->available_nids++; 21905921aaa1SLiFan } 2191b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2192769ec6e5SJaegeuk Kim radix_tree_preload_end(); 21935921aaa1SLiFan 219430a61ddfSChao Yu if (err) 2195e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 219630a61ddfSChao Yu return ret; 2197e05df3b1SJaegeuk Kim } 2198e05df3b1SJaegeuk Kim 2199b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2200e05df3b1SJaegeuk Kim { 2201b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2202e05df3b1SJaegeuk Kim struct free_nid *i; 2203cf0ee0f0SChao Yu bool need_free = false; 2204cf0ee0f0SChao Yu 2205b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22068a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 22079a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2208a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2209cf0ee0f0SChao Yu need_free = true; 2210e05df3b1SJaegeuk Kim } 2211b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2212cf0ee0f0SChao Yu 2213cf0ee0f0SChao Yu if (need_free) 2214cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2215e05df3b1SJaegeuk Kim } 2216e05df3b1SJaegeuk Kim 2217e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2218e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2219e05df3b1SJaegeuk Kim { 22206fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2221e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2222e05df3b1SJaegeuk Kim block_t blk_addr; 22234ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2224e05df3b1SJaegeuk Kim int i; 2225e05df3b1SJaegeuk Kim 222623380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 22274ac91242SChao Yu 2228e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2229e05df3b1SJaegeuk Kim 2230e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2231cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 223204431c44SJaegeuk Kim break; 223323d38844SHaicheng Li 2234e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2235e2374015SChao Yu 2236e2374015SChao Yu if (blk_addr == NEW_ADDR) 2237e2374015SChao Yu return -EINVAL; 2238e2374015SChao Yu 22395921aaa1SLiFan if (blk_addr == NULL_ADDR) { 22405921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 22415921aaa1SLiFan } else { 2242346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 22435921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2244346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2245e05df3b1SJaegeuk Kim } 2246e05df3b1SJaegeuk Kim } 2247e2374015SChao Yu 2248e2374015SChao Yu return 0; 22495921aaa1SLiFan } 2250e05df3b1SJaegeuk Kim 22512fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 22524ac91242SChao Yu { 22534ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 22544ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 22552fbaa25fSChao Yu int i; 22564ac91242SChao Yu 22574ac91242SChao Yu down_read(&curseg->journal_rwsem); 22584ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 22594ac91242SChao Yu block_t addr; 22604ac91242SChao Yu nid_t nid; 22614ac91242SChao Yu 22624ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 22634ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 22644ac91242SChao Yu if (addr == NULL_ADDR) 22655921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22664ac91242SChao Yu else 22674ac91242SChao Yu remove_free_nid(sbi, nid); 22684ac91242SChao Yu } 22694ac91242SChao Yu up_read(&curseg->journal_rwsem); 22702fbaa25fSChao Yu } 22712fbaa25fSChao Yu 2272e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 22734ac91242SChao Yu { 22744ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 22754ac91242SChao Yu unsigned int i, idx; 227697456574SFan Li nid_t nid; 22774ac91242SChao Yu 22784ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 22794ac91242SChao Yu 22804ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 22814ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 22824ac91242SChao Yu continue; 22834ac91242SChao Yu if (!nm_i->free_nid_count[i]) 22844ac91242SChao Yu continue; 22854ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 228697456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 228797456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 228897456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 228997456574SFan Li break; 22904ac91242SChao Yu 22914ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 22925921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22934ac91242SChao Yu 22949a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 22954ac91242SChao Yu goto out; 22964ac91242SChao Yu } 22974ac91242SChao Yu } 22984ac91242SChao Yu out: 22992fbaa25fSChao Yu scan_curseg_cache(sbi); 23004ac91242SChao Yu 23014ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 23024ac91242SChao Yu } 23034ac91242SChao Yu 2304e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 23054d57b86dSChao Yu bool sync, bool mount) 2306e05df3b1SJaegeuk Kim { 2307e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2308e2374015SChao Yu int i = 0, ret; 230955008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2310e05df3b1SJaegeuk Kim 2311e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2312e9cdd307SYunlei He nid = 0; 2313e9cdd307SYunlei He 231455008d84SJaegeuk Kim /* Enough entries */ 23159a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2316e2374015SChao Yu return 0; 2317e05df3b1SJaegeuk Kim 23184d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2319e2374015SChao Yu return 0; 2320e05df3b1SJaegeuk Kim 23214ac91242SChao Yu if (!mount) { 23224ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 23234ac91242SChao Yu scan_free_nid_bits(sbi); 23244ac91242SChao Yu 232574986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2326e2374015SChao Yu return 0; 232722ad0b6aSJaegeuk Kim } 232822ad0b6aSJaegeuk Kim 232955008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 23304d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 233126879fb1SChao Yu META_NAT, true); 2332e05df3b1SJaegeuk Kim 2333b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2334a5131193SJaegeuk Kim 2335e05df3b1SJaegeuk Kim while (1) { 233666e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 233766e83361SYunlei He nm_i->nat_block_bitmap)) { 2338e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2339e05df3b1SJaegeuk Kim 2340edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2341edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2342edc55aafSJaegeuk Kim } else { 2343e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2344e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2345edc55aafSJaegeuk Kim } 2346e2374015SChao Yu 2347e2374015SChao Yu if (ret) { 2348e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2349dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2350edc55aafSJaegeuk Kim return ret; 2351e2374015SChao Yu } 235266e83361SYunlei He } 2353e05df3b1SJaegeuk Kim 2354e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2355cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2356e05df3b1SJaegeuk Kim nid = 0; 235755008d84SJaegeuk Kim 2358a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2359e05df3b1SJaegeuk Kim break; 2360e05df3b1SJaegeuk Kim } 2361e05df3b1SJaegeuk Kim 236255008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 236355008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2364e05df3b1SJaegeuk Kim 2365e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 23662fbaa25fSChao Yu scan_curseg_cache(sbi); 2367dfc08a12SChao Yu 2368b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23692db2388fSChao Yu 23704d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2371ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2372e2374015SChao Yu 2373e2374015SChao Yu return 0; 2374e05df3b1SJaegeuk Kim } 2375e05df3b1SJaegeuk Kim 2376e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 23772411cf5bSChao Yu { 2378e2374015SChao Yu int ret; 2379e2374015SChao Yu 23802411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2381e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 23822411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2383e2374015SChao Yu 2384e2374015SChao Yu return ret; 23852411cf5bSChao Yu } 23862411cf5bSChao Yu 2387e05df3b1SJaegeuk Kim /* 2388e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2389e05df3b1SJaegeuk Kim * from second parameter of this function. 2390e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2391e05df3b1SJaegeuk Kim */ 23924d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2393e05df3b1SJaegeuk Kim { 2394e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2395e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2396e05df3b1SJaegeuk Kim retry: 239755523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 2398c45d6002SChao Yu f2fs_show_injection_info(sbi, FAULT_ALLOC_NID); 2399cb78942bSJaegeuk Kim return false; 240055523519SChao Yu } 24017fa750a1SArnd Bergmann 2402b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2403e05df3b1SJaegeuk Kim 240404d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 240504d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 240604d47e67SChao Yu return false; 240704d47e67SChao Yu } 2408e05df3b1SJaegeuk Kim 24094d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 24104d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 24119a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 24129a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2413b8559dc2SChao Yu struct free_nid, list); 2414e05df3b1SJaegeuk Kim *nid = i->nid; 2415b8559dc2SChao Yu 2416a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 241704d47e67SChao Yu nm_i->available_nids--; 24184ac91242SChao Yu 2419346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 24204ac91242SChao Yu 2421b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2422e05df3b1SJaegeuk Kim return true; 2423e05df3b1SJaegeuk Kim } 2424b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 242555008d84SJaegeuk Kim 242655008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2427f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 242855008d84SJaegeuk Kim goto retry; 2429f84262b0SJaegeuk Kim return false; 243055008d84SJaegeuk Kim } 2431e05df3b1SJaegeuk Kim 24320a8165d7SJaegeuk Kim /* 24334d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2434e05df3b1SJaegeuk Kim */ 24354d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2436e05df3b1SJaegeuk Kim { 2437e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2438e05df3b1SJaegeuk Kim struct free_nid *i; 2439e05df3b1SJaegeuk Kim 2440b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24418a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2442b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2443a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2444b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2445cf0ee0f0SChao Yu 2446cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2447e05df3b1SJaegeuk Kim } 2448e05df3b1SJaegeuk Kim 24490a8165d7SJaegeuk Kim /* 24504d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2451e05df3b1SJaegeuk Kim */ 24524d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2453e05df3b1SJaegeuk Kim { 245449952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 245549952fa1SJaegeuk Kim struct free_nid *i; 2456cf0ee0f0SChao Yu bool need_free = false; 245749952fa1SJaegeuk Kim 245865985d93SJaegeuk Kim if (!nid) 245965985d93SJaegeuk Kim return; 246065985d93SJaegeuk Kim 2461b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24628a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2463b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2464b8559dc2SChao Yu 24654d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2466a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2467cf0ee0f0SChao Yu need_free = true; 246895630cbaSHaicheng Li } else { 2469a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 247095630cbaSHaicheng Li } 247104d47e67SChao Yu 247204d47e67SChao Yu nm_i->available_nids++; 247304d47e67SChao Yu 2474346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 24754ac91242SChao Yu 2476b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2477cf0ee0f0SChao Yu 2478cf0ee0f0SChao Yu if (need_free) 2479cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2480e05df3b1SJaegeuk Kim } 2481e05df3b1SJaegeuk Kim 24824d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 248331696580SChao Yu { 248431696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 248531696580SChao Yu struct free_nid *i, *next; 248631696580SChao Yu int nr = nr_shrink; 248731696580SChao Yu 24889a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2489ad4edb83SJaegeuk Kim return 0; 2490ad4edb83SJaegeuk Kim 249131696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 249231696580SChao Yu return 0; 249331696580SChao Yu 2494b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24959a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2496b8559dc2SChao Yu if (nr_shrink <= 0 || 24979a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 249831696580SChao Yu break; 2499b8559dc2SChao Yu 2500a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 250131696580SChao Yu kmem_cache_free(free_nid_slab, i); 250231696580SChao Yu nr_shrink--; 250331696580SChao Yu } 2504b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 250531696580SChao Yu mutex_unlock(&nm_i->build_lock); 250631696580SChao Yu 250731696580SChao Yu return nr - nr_shrink; 250831696580SChao Yu } 250931696580SChao Yu 25104d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 251128cdce04SChao Yu { 251228cdce04SChao Yu void *src_addr, *dst_addr; 251328cdce04SChao Yu size_t inline_size; 251428cdce04SChao Yu struct page *ipage; 251528cdce04SChao Yu struct f2fs_inode *ri; 251628cdce04SChao Yu 25174d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 25189850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 251928cdce04SChao Yu 2520e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 25211eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 25221eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 25231eca05aaSYunlei He } else { 252491942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2525e3b4d43fSJaegeuk Kim goto update_inode; 2526e3b4d43fSJaegeuk Kim } 2527e3b4d43fSJaegeuk Kim 25286afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 25296afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 253028cdce04SChao Yu inline_size = inline_xattr_size(inode); 253128cdce04SChao Yu 2532bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 253328cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2534e3b4d43fSJaegeuk Kim update_inode: 25354d57b86dSChao Yu f2fs_update_inode(inode, ipage); 253628cdce04SChao Yu f2fs_put_page(ipage, 1); 253728cdce04SChao Yu } 253828cdce04SChao Yu 25394d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2540abb2366cSJaegeuk Kim { 25414081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2542abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 254387905682SYunlei He nid_t new_xnid; 254487905682SYunlei He struct dnode_of_data dn; 2545abb2366cSJaegeuk Kim struct node_info ni; 2546d260081cSChao Yu struct page *xpage; 25477735730dSChao Yu int err; 2548abb2366cSJaegeuk Kim 2549abb2366cSJaegeuk Kim if (!prev_xnid) 2550abb2366cSJaegeuk Kim goto recover_xnid; 2551abb2366cSJaegeuk Kim 2552d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 25537735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 25547735730dSChao Yu if (err) 25557735730dSChao Yu return err; 25567735730dSChao Yu 25574d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2558000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2559479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2560abb2366cSJaegeuk Kim 2561abb2366cSJaegeuk Kim recover_xnid: 2562d260081cSChao Yu /* 2: update xattr nid in inode */ 25634d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 256487905682SYunlei He return -ENOSPC; 256587905682SYunlei He 256687905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 25674d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 256887905682SYunlei He if (IS_ERR(xpage)) { 25694d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 257087905682SYunlei He return PTR_ERR(xpage); 257187905682SYunlei He } 257287905682SYunlei He 25734d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 25744d57b86dSChao Yu f2fs_update_inode_page(inode); 2575abb2366cSJaegeuk Kim 2576d260081cSChao Yu /* 3: update and set xattr node page dirty */ 257787905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2578d260081cSChao Yu 2579d260081cSChao Yu set_page_dirty(xpage); 2580d260081cSChao Yu f2fs_put_page(xpage, 1); 2581abb2366cSJaegeuk Kim 2582d260081cSChao Yu return 0; 2583abb2366cSJaegeuk Kim } 2584abb2366cSJaegeuk Kim 25854d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2586e05df3b1SJaegeuk Kim { 258758bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2588e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2589e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2590e05df3b1SJaegeuk Kim struct page *ipage; 25917735730dSChao Yu int err; 2592e05df3b1SJaegeuk Kim 25937735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 25947735730dSChao Yu if (err) 25957735730dSChao Yu return err; 2596e8271fa3SJaegeuk Kim 2597e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2598e8271fa3SJaegeuk Kim return -EINVAL; 2599e8ea9b3dSJaegeuk Kim retry: 2600300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2601e8ea9b3dSJaegeuk Kim if (!ipage) { 26025df7731fSChao Yu congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); 2603e8ea9b3dSJaegeuk Kim goto retry; 2604e8ea9b3dSJaegeuk Kim } 2605e05df3b1SJaegeuk Kim 2606e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2607b8559dc2SChao Yu remove_free_nid(sbi, ino); 2608e05df3b1SJaegeuk Kim 2609237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2610e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2611e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2612ef2a0071SChao Yu set_cold_node(ipage, false); 2613e05df3b1SJaegeuk Kim 261458bfaf44SJaegeuk Kim src = F2FS_INODE(page); 261558bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2616e05df3b1SJaegeuk Kim 261758bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 261858bfaf44SJaegeuk Kim dst->i_size = 0; 261958bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 262058bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 262158bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 26227a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 26235c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 26247a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 26256afc662eSChao Yu 26267beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 26276afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 26286afc662eSChao Yu i_inline_xattr_size)) 26296afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 26306afc662eSChao Yu 26317beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 26325c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 26335c57132eSChao Yu i_projid)) 26345c57132eSChao Yu dst->i_projid = src->i_projid; 26355cd1f387SChao Yu 26367beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 26375cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 26385cd1f387SChao Yu i_crtime_nsec)) { 26395cd1f387SChao Yu dst->i_crtime = src->i_crtime; 26405cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 26415cd1f387SChao Yu } 26425c57132eSChao Yu } 2643e05df3b1SJaegeuk Kim 2644e05df3b1SJaegeuk Kim new_ni = old_ni; 2645e05df3b1SJaegeuk Kim new_ni.ino = ino; 2646e05df3b1SJaegeuk Kim 26470abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 264865e5cd0aSJaegeuk Kim WARN_ON(1); 2649479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2650e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2651617deb8cSJaegeuk Kim set_page_dirty(ipage); 2652e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2653e05df3b1SJaegeuk Kim return 0; 2654e05df3b1SJaegeuk Kim } 2655e05df3b1SJaegeuk Kim 26567735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2657e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2658e05df3b1SJaegeuk Kim { 2659e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2660e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2661e05df3b1SJaegeuk Kim block_t addr; 26629ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2663e05df3b1SJaegeuk Kim 2664e05df3b1SJaegeuk Kim /* scan the node segment */ 2665e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2666e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2667e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2668e05df3b1SJaegeuk Kim 26699ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2670664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2671393ff91fSJaegeuk Kim 26729af0ff1cSChao Yu /* readahead node pages */ 26734d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 26749af0ff1cSChao Yu 26759ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 26764d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2677393ff91fSJaegeuk Kim 26787735730dSChao Yu if (IS_ERR(page)) 26797735730dSChao Yu return PTR_ERR(page); 26807735730dSChao Yu 26819ecf4b80SChao Yu rn = F2FS_NODE(page); 2682393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2683393ff91fSJaegeuk Kim sum_entry->version = 0; 2684393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 26859af0ff1cSChao Yu sum_entry++; 26869ecf4b80SChao Yu f2fs_put_page(page, 1); 26879af0ff1cSChao Yu } 2688bac4eef6SChao Yu 26899ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2690bac4eef6SChao Yu addr + nrpages); 26919af0ff1cSChao Yu } 26927735730dSChao Yu return 0; 2693e05df3b1SJaegeuk Kim } 2694e05df3b1SJaegeuk Kim 2695aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2696e05df3b1SJaegeuk Kim { 2697e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2698e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2699b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2700e05df3b1SJaegeuk Kim int i; 2701e05df3b1SJaegeuk Kim 2702b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2703dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2704e05df3b1SJaegeuk Kim struct nat_entry *ne; 2705e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2706dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2707e05df3b1SJaegeuk Kim 2708dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 27099be32d72SJaegeuk Kim 2710e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2711e05df3b1SJaegeuk Kim if (!ne) { 271212f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 271312f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 27149be32d72SJaegeuk Kim } 271504d47e67SChao Yu 271604d47e67SChao Yu /* 271704d47e67SChao Yu * if a free nat in journal has not been used after last 271804d47e67SChao Yu * checkpoint, we should remove it from available nids, 271904d47e67SChao Yu * since later we will add it again. 272004d47e67SChao Yu */ 272104d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 272204d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 272304d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 272404d47e67SChao Yu nm_i->available_nids--; 272504d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 272604d47e67SChao Yu } 272704d47e67SChao Yu 2728e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2729e05df3b1SJaegeuk Kim } 2730dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2731b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2732e05df3b1SJaegeuk Kim } 2733e05df3b1SJaegeuk Kim 2734309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2735309cc2b6SJaegeuk Kim struct list_head *head, int max) 2736e05df3b1SJaegeuk Kim { 2737309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2738e05df3b1SJaegeuk Kim 2739309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2740309cc2b6SJaegeuk Kim goto add_out; 2741e05df3b1SJaegeuk Kim 2742309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2743309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2744309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2745309cc2b6SJaegeuk Kim return; 2746309cc2b6SJaegeuk Kim } 2747309cc2b6SJaegeuk Kim } 2748309cc2b6SJaegeuk Kim add_out: 2749309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2750aec71382SChao Yu } 2751aec71382SChao Yu 27529f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 275322ad0b6aSJaegeuk Kim struct page *page) 275422ad0b6aSJaegeuk Kim { 275522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 275622ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 275722ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 275822ad0b6aSJaegeuk Kim int valid = 0; 275937a0ab2aSFan Li int i = 0; 276022ad0b6aSJaegeuk Kim 276122ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 276222ad0b6aSJaegeuk Kim return; 276322ad0b6aSJaegeuk Kim 276437a0ab2aSFan Li if (nat_index == 0) { 276537a0ab2aSFan Li valid = 1; 276637a0ab2aSFan Li i = 1; 276737a0ab2aSFan Li } 276837a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 276936af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 277022ad0b6aSJaegeuk Kim valid++; 277122ad0b6aSJaegeuk Kim } 277222ad0b6aSJaegeuk Kim if (valid == 0) { 277323380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 277423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 277522ad0b6aSJaegeuk Kim return; 277622ad0b6aSJaegeuk Kim } 277722ad0b6aSJaegeuk Kim 277823380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 277922ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 278023380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 278122ad0b6aSJaegeuk Kim else 278223380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 278322ad0b6aSJaegeuk Kim } 278422ad0b6aSJaegeuk Kim 2785edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 278622ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2787309cc2b6SJaegeuk Kim { 2788309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2789b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2790309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2791309cc2b6SJaegeuk Kim bool to_journal = true; 2792309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2793309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2794309cc2b6SJaegeuk Kim struct page *page = NULL; 2795aec71382SChao Yu 2796aec71382SChao Yu /* 2797aec71382SChao Yu * there are two steps to flush nat entries: 2798aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2799aec71382SChao Yu * #2, flush nat entries to nat page. 2800aec71382SChao Yu */ 280122ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 280222ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2803aec71382SChao Yu to_journal = false; 2804aec71382SChao Yu 2805aec71382SChao Yu if (to_journal) { 2806b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2807aec71382SChao Yu } else { 2808e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2809edc55aafSJaegeuk Kim if (IS_ERR(page)) 2810edc55aafSJaegeuk Kim return PTR_ERR(page); 2811edc55aafSJaegeuk Kim 2812e05df3b1SJaegeuk Kim nat_blk = page_address(page); 28139850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2814e05df3b1SJaegeuk Kim } 2815e05df3b1SJaegeuk Kim 2816aec71382SChao Yu /* flush dirty nats in nat entry set */ 2817309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2818aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2819aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2820aec71382SChao Yu int offset; 2821aec71382SChao Yu 2822febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2823309cc2b6SJaegeuk Kim 2824aec71382SChao Yu if (to_journal) { 28254d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2826aec71382SChao Yu NAT_JOURNAL, nid, 1); 28279850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2828dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2829dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2830aec71382SChao Yu } else { 2831aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2832aec71382SChao Yu } 2833aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 283488bd02c9SJaegeuk Kim nat_reset_flag(ne); 28350b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 283604d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 28375921aaa1SLiFan add_free_nid(sbi, nid, false, true); 28384ac91242SChao Yu } else { 28394ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2840346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 284104d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 284204d47e67SChao Yu } 2843e05df3b1SJaegeuk Kim } 2844aec71382SChao Yu 284522ad0b6aSJaegeuk Kim if (to_journal) { 2846b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 284722ad0b6aSJaegeuk Kim } else { 284822ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2849e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 285022ad0b6aSJaegeuk Kim } 2851aec71382SChao Yu 285259c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 285359c9081bSYunlei He if (!set->entry_cnt) { 2854309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2855309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2856309cc2b6SJaegeuk Kim } 2857edc55aafSJaegeuk Kim return 0; 285859c9081bSYunlei He } 2859aec71382SChao Yu 2860309cc2b6SJaegeuk Kim /* 2861309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2862309cc2b6SJaegeuk Kim */ 2863edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2864309cc2b6SJaegeuk Kim { 2865309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2866309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2867b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 28687aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2869309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2870309cc2b6SJaegeuk Kim unsigned int found; 2871309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2872309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2873edc55aafSJaegeuk Kim int err = 0; 2874309cc2b6SJaegeuk Kim 28757f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 28767f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 28777f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 28787f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 28797f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 28807f2ecdd8SJaegeuk Kim } 28817f2ecdd8SJaegeuk Kim 288220d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 2883edc55aafSJaegeuk Kim return 0; 2884a5131193SJaegeuk Kim 2885b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2886a5131193SJaegeuk Kim 2887309cc2b6SJaegeuk Kim /* 2888309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2889309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2890309cc2b6SJaegeuk Kim * into nat entry set. 2891309cc2b6SJaegeuk Kim */ 2892900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 289322ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2894309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2895309cc2b6SJaegeuk Kim 2896309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 28977aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2898309cc2b6SJaegeuk Kim unsigned idx; 2899309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2900309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2901309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2902dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2903309cc2b6SJaegeuk Kim } 2904309cc2b6SJaegeuk Kim 2905309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2906edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 2907edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 2908edc55aafSJaegeuk Kim if (err) 2909edc55aafSJaegeuk Kim break; 2910edc55aafSJaegeuk Kim } 2911309cc2b6SJaegeuk Kim 2912b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 291359c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2914edc55aafSJaegeuk Kim 2915edc55aafSJaegeuk Kim return err; 2916e05df3b1SJaegeuk Kim } 2917e05df3b1SJaegeuk Kim 291822ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 291922ad0b6aSJaegeuk Kim { 292022ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 292122ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 292222ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 292322ad0b6aSJaegeuk Kim unsigned int i; 292422ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 292522ad0b6aSJaegeuk Kim block_t nat_bits_addr; 292622ad0b6aSJaegeuk Kim 292722ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 292822ad0b6aSJaegeuk Kim return 0; 292922ad0b6aSJaegeuk Kim 2930df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2931acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2932acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 293322ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 293422ad0b6aSJaegeuk Kim return -ENOMEM; 293522ad0b6aSJaegeuk Kim 293622ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 293722ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 293822ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 29397735730dSChao Yu struct page *page; 29407735730dSChao Yu 29417735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 29423b30eb19SChao Yu if (IS_ERR(page)) 29437735730dSChao Yu return PTR_ERR(page); 294422ad0b6aSJaegeuk Kim 294522ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 294622ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 294722ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 294822ad0b6aSJaegeuk Kim } 294922ad0b6aSJaegeuk Kim 2950ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 295122ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 295222ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 295322ad0b6aSJaegeuk Kim return 0; 295422ad0b6aSJaegeuk Kim } 295522ad0b6aSJaegeuk Kim 295622ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 295722ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 295822ad0b6aSJaegeuk Kim 2959dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 296022ad0b6aSJaegeuk Kim return 0; 296122ad0b6aSJaegeuk Kim } 296222ad0b6aSJaegeuk Kim 2963bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 29647041d5d2SChao Yu { 29657041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 29667041d5d2SChao Yu unsigned int i = 0; 29677041d5d2SChao Yu nid_t nid, last_nid; 29687041d5d2SChao Yu 29697041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 29707041d5d2SChao Yu return; 29717041d5d2SChao Yu 29727041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29737041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 29747041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29757041d5d2SChao Yu break; 29767041d5d2SChao Yu 29777041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29787041d5d2SChao Yu 29797041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2980f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 29817041d5d2SChao Yu 2982346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 29837041d5d2SChao Yu for (; nid < last_nid; nid++) 2984346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2985346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 29867041d5d2SChao Yu } 29877041d5d2SChao Yu 29887041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29897041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 29907041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29917041d5d2SChao Yu break; 29927041d5d2SChao Yu 29937041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29947041d5d2SChao Yu } 29957041d5d2SChao Yu } 29967041d5d2SChao Yu 2997e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2998e05df3b1SJaegeuk Kim { 2999e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3000e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3001e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 300222ad0b6aSJaegeuk Kim unsigned int nat_segs; 300322ad0b6aSJaegeuk Kim int err; 3004e05df3b1SJaegeuk Kim 3005e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3006e05df3b1SJaegeuk Kim 3007e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3008e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 300922ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 301022ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 30117ee0eeabSJaegeuk Kim 3012b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 301304d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 301427cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 30159a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 30169a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3017e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 3018cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3019ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 30202304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 3021e05df3b1SJaegeuk Kim 30228a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 30239a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3024769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3025769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3026e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 302722969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3028e05df3b1SJaegeuk Kim 3029e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3030b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3031b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 3032e05df3b1SJaegeuk Kim 3033e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 303479b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3035e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 3036e05df3b1SJaegeuk Kim if (!version_bitmap) 3037e05df3b1SJaegeuk Kim return -EFAULT; 3038e05df3b1SJaegeuk Kim 303979b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 304079b5793bSAlexandru Gheorghiu GFP_KERNEL); 304179b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 304279b5793bSAlexandru Gheorghiu return -ENOMEM; 3043599a09b2SChao Yu 304422ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 304522ad0b6aSJaegeuk Kim if (err) 304622ad0b6aSJaegeuk Kim return err; 304722ad0b6aSJaegeuk Kim 3048599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3049599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3050599a09b2SChao Yu GFP_KERNEL); 3051599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3052599a09b2SChao Yu return -ENOMEM; 3053599a09b2SChao Yu #endif 3054599a09b2SChao Yu 3055e05df3b1SJaegeuk Kim return 0; 3056e05df3b1SJaegeuk Kim } 3057e05df3b1SJaegeuk Kim 30589f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 30594ac91242SChao Yu { 30604ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3061bb1105e4SJaegeuk Kim int i; 30624ac91242SChao Yu 3063026f0507SKees Cook nm_i->free_nid_bitmap = 3064026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 3065026f0507SKees Cook nm_i->nat_blocks), 3066026f0507SKees Cook GFP_KERNEL); 30674ac91242SChao Yu if (!nm_i->free_nid_bitmap) 30684ac91242SChao Yu return -ENOMEM; 30694ac91242SChao Yu 3070bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3071bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3072e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 307368c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3074bb1105e4SJaegeuk Kim return -ENOMEM; 3075bb1105e4SJaegeuk Kim } 3076bb1105e4SJaegeuk Kim 3077628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 30784ac91242SChao Yu GFP_KERNEL); 30794ac91242SChao Yu if (!nm_i->nat_block_bitmap) 30804ac91242SChao Yu return -ENOMEM; 3081586d1492SChao Yu 30829d2a789cSKees Cook nm_i->free_nid_count = 30839d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 30849d2a789cSKees Cook nm_i->nat_blocks), 30859d2a789cSKees Cook GFP_KERNEL); 3086586d1492SChao Yu if (!nm_i->free_nid_count) 3087586d1492SChao Yu return -ENOMEM; 30884ac91242SChao Yu return 0; 30894ac91242SChao Yu } 30904ac91242SChao Yu 30914d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3092e05df3b1SJaegeuk Kim { 3093e05df3b1SJaegeuk Kim int err; 3094e05df3b1SJaegeuk Kim 3095acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3096acbf054dSChao Yu GFP_KERNEL); 3097e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3098e05df3b1SJaegeuk Kim return -ENOMEM; 3099e05df3b1SJaegeuk Kim 3100e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3101e05df3b1SJaegeuk Kim if (err) 3102e05df3b1SJaegeuk Kim return err; 3103e05df3b1SJaegeuk Kim 31044ac91242SChao Yu err = init_free_nid_cache(sbi); 31054ac91242SChao Yu if (err) 31064ac91242SChao Yu return err; 31074ac91242SChao Yu 31087041d5d2SChao Yu /* load free nid status from nat_bits table */ 31097041d5d2SChao Yu load_free_nid_bitmap(sbi); 31107041d5d2SChao Yu 3111e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3112e05df3b1SJaegeuk Kim } 3113e05df3b1SJaegeuk Kim 31144d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3115e05df3b1SJaegeuk Kim { 3116e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3117e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3118e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 31197aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3120e05df3b1SJaegeuk Kim nid_t nid = 0; 3121e05df3b1SJaegeuk Kim unsigned int found; 3122e05df3b1SJaegeuk Kim 3123e05df3b1SJaegeuk Kim if (!nm_i) 3124e05df3b1SJaegeuk Kim return; 3125e05df3b1SJaegeuk Kim 3126e05df3b1SJaegeuk Kim /* destroy free nid list */ 3127b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 31289a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3129a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3130b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3131cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3132b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3133e05df3b1SJaegeuk Kim } 31349a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 31359a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 31369a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3137b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3138e05df3b1SJaegeuk Kim 3139e05df3b1SJaegeuk Kim /* destroy nat cache */ 3140b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3141e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3142e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3143e05df3b1SJaegeuk Kim unsigned idx; 31447aed0d45SJaegeuk Kim 3145b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 314622969158SChao Yu for (idx = 0; idx < found; idx++) { 314722969158SChao Yu spin_lock(&nm_i->nat_list_lock); 314822969158SChao Yu list_del(&natvec[idx]->list); 314922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 315022969158SChao Yu 3151b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3152e05df3b1SJaegeuk Kim } 315322969158SChao Yu } 31549850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 31557aed0d45SJaegeuk Kim 31567aed0d45SJaegeuk Kim /* destroy nat set cache */ 31577aed0d45SJaegeuk Kim nid = 0; 31587aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 31597aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 31607aed0d45SJaegeuk Kim unsigned idx; 31617aed0d45SJaegeuk Kim 31627aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 31637aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 31647aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 31657aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 31667aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 31677aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 31687aed0d45SJaegeuk Kim } 31697aed0d45SJaegeuk Kim } 3170b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3171e05df3b1SJaegeuk Kim 31724ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3173bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3174bb1105e4SJaegeuk Kim int i; 3175bb1105e4SJaegeuk Kim 3176bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3177bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 31785222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3179bb1105e4SJaegeuk Kim } 3180586d1492SChao Yu kvfree(nm_i->free_nid_count); 31814ac91242SChao Yu 31825222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 31835222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3184599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 31855222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3186599a09b2SChao Yu #endif 3187e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 31885222595dSJaegeuk Kim kvfree(nm_i); 3189e05df3b1SJaegeuk Kim } 3190e05df3b1SJaegeuk Kim 31914d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3192e05df3b1SJaegeuk Kim { 319398510003SChao Yu nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry", 3194e8512d2eSGu Zheng sizeof(struct nat_entry)); 3195e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3196aec71382SChao Yu goto fail; 3197e05df3b1SJaegeuk Kim 319898510003SChao Yu free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid", 3199e8512d2eSGu Zheng sizeof(struct free_nid)); 3200aec71382SChao Yu if (!free_nid_slab) 3201ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3202aec71382SChao Yu 320398510003SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set", 3204aec71382SChao Yu sizeof(struct nat_entry_set)); 3205aec71382SChao Yu if (!nat_entry_set_slab) 3206ce3e6d25SMarkus Elfring goto destroy_free_nid; 320750fa53ecSChao Yu 320898510003SChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry", 320950fa53ecSChao Yu sizeof(struct fsync_node_entry)); 321050fa53ecSChao Yu if (!fsync_node_entry_slab) 321150fa53ecSChao Yu goto destroy_nat_entry_set; 3212e05df3b1SJaegeuk Kim return 0; 3213aec71382SChao Yu 321450fa53ecSChao Yu destroy_nat_entry_set: 321550fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3216ce3e6d25SMarkus Elfring destroy_free_nid: 3217aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3218ce3e6d25SMarkus Elfring destroy_nat_entry: 3219aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3220aec71382SChao Yu fail: 3221aec71382SChao Yu return -ENOMEM; 3222e05df3b1SJaegeuk Kim } 3223e05df3b1SJaegeuk Kim 32244d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3225e05df3b1SJaegeuk Kim { 322650fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3227aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3228e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3229e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3230e05df3b1SJaegeuk Kim } 3231