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 5130a8165d7SJaegeuk Kim /* 514e1c42045Sarter97 * This function always returns success 515e05df3b1SJaegeuk Kim */ 5167735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 5174d57b86dSChao Yu struct node_info *ni) 518e05df3b1SJaegeuk Kim { 519e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 520e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 521b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 522e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 523e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 524e05df3b1SJaegeuk Kim struct page *page = NULL; 525e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 526e05df3b1SJaegeuk Kim struct nat_entry *e; 52766a82d1fSYunlei He pgoff_t index; 52893770ab7SChao Yu block_t blkaddr; 529e05df3b1SJaegeuk Kim int i; 530e05df3b1SJaegeuk Kim 531e05df3b1SJaegeuk Kim ni->nid = nid; 532e05df3b1SJaegeuk Kim 533e05df3b1SJaegeuk Kim /* Check nat cache */ 534b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 535e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 536e05df3b1SJaegeuk Kim if (e) { 537e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 538e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 539e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 540b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5417735730dSChao Yu return 0; 5421515aef0SChao Yu } 543e05df3b1SJaegeuk Kim 5443547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 5453547ea96SJaegeuk Kim 546e05df3b1SJaegeuk Kim /* Check current segment summary */ 547b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5484d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 549e05df3b1SJaegeuk Kim if (i >= 0) { 550dfc08a12SChao Yu ne = nat_in_journal(journal, i); 551e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 552e05df3b1SJaegeuk Kim } 553b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 55466a82d1fSYunlei He if (i >= 0) { 55566a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 556e05df3b1SJaegeuk Kim goto cache; 55766a82d1fSYunlei He } 558e05df3b1SJaegeuk Kim 559e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 56066a82d1fSYunlei He index = current_nat_addr(sbi, nid); 56166a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 56266a82d1fSYunlei He 5634d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5647735730dSChao Yu if (IS_ERR(page)) 5657735730dSChao Yu return PTR_ERR(page); 5667735730dSChao Yu 567e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 568e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 569e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 570e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 571e05df3b1SJaegeuk Kim cache: 57293770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 57393770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 57493770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 57593770ab7SChao Yu return -EFAULT; 57693770ab7SChao Yu 577e05df3b1SJaegeuk Kim /* cache nat entry */ 5781515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 5797735730dSChao Yu return 0; 580e05df3b1SJaegeuk Kim } 581e05df3b1SJaegeuk Kim 58279344efbSJaegeuk Kim /* 58379344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 58479344efbSJaegeuk Kim */ 5854d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 58679344efbSJaegeuk Kim { 58779344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 58879344efbSJaegeuk Kim struct blk_plug plug; 58979344efbSJaegeuk Kim int i, end; 59079344efbSJaegeuk Kim nid_t nid; 59179344efbSJaegeuk Kim 59279344efbSJaegeuk Kim blk_start_plug(&plug); 59379344efbSJaegeuk Kim 59479344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 59579344efbSJaegeuk Kim end = start + n; 59679344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 59779344efbSJaegeuk Kim for (i = start; i < end; i++) { 59879344efbSJaegeuk Kim nid = get_nid(parent, i, false); 5994d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 60079344efbSJaegeuk Kim } 60179344efbSJaegeuk Kim 60279344efbSJaegeuk Kim blk_finish_plug(&plug); 60379344efbSJaegeuk Kim } 60479344efbSJaegeuk Kim 6054d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6063cf45747SChao Yu { 6073cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 608d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 609d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 610d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6113cf45747SChao Yu int cur_level = dn->cur_level; 6123cf45747SChao Yu int max_level = dn->max_level; 6133cf45747SChao Yu pgoff_t base = 0; 6143cf45747SChao Yu 6153cf45747SChao Yu if (!dn->max_level) 6163cf45747SChao Yu return pgofs + 1; 6173cf45747SChao Yu 6183cf45747SChao Yu while (max_level-- > cur_level) 6193cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6203cf45747SChao Yu 6213cf45747SChao Yu switch (dn->max_level) { 6223cf45747SChao Yu case 3: 6233cf45747SChao Yu base += 2 * indirect_blks; 6240a4c9265SGustavo A. R. Silva /* fall through */ 6253cf45747SChao Yu case 2: 6263cf45747SChao Yu base += 2 * direct_blks; 6270a4c9265SGustavo A. R. Silva /* fall through */ 6283cf45747SChao Yu case 1: 6293cf45747SChao Yu base += direct_index; 6303cf45747SChao Yu break; 6313cf45747SChao Yu default: 6323cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6333cf45747SChao Yu } 6343cf45747SChao Yu 6353cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6363cf45747SChao Yu } 6373cf45747SChao Yu 6380a8165d7SJaegeuk Kim /* 639e05df3b1SJaegeuk Kim * The maximum depth is four. 640e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 641e05df3b1SJaegeuk Kim */ 64281ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 643de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 644e05df3b1SJaegeuk Kim { 64581ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 646d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 647e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 648d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 649e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 650e05df3b1SJaegeuk Kim int n = 0; 651e05df3b1SJaegeuk Kim int level = 0; 652e05df3b1SJaegeuk Kim 653e05df3b1SJaegeuk Kim noffset[0] = 0; 654e05df3b1SJaegeuk Kim 655e05df3b1SJaegeuk Kim if (block < direct_index) { 65625c0a6e5SNamjae Jeon offset[n] = block; 657e05df3b1SJaegeuk Kim goto got; 658e05df3b1SJaegeuk Kim } 659e05df3b1SJaegeuk Kim block -= direct_index; 660e05df3b1SJaegeuk Kim if (block < direct_blks) { 661e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 662e05df3b1SJaegeuk Kim noffset[n] = 1; 66325c0a6e5SNamjae Jeon offset[n] = block; 664e05df3b1SJaegeuk Kim level = 1; 665e05df3b1SJaegeuk Kim goto got; 666e05df3b1SJaegeuk Kim } 667e05df3b1SJaegeuk Kim block -= direct_blks; 668e05df3b1SJaegeuk Kim if (block < direct_blks) { 669e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 670e05df3b1SJaegeuk Kim noffset[n] = 2; 67125c0a6e5SNamjae Jeon offset[n] = block; 672e05df3b1SJaegeuk Kim level = 1; 673e05df3b1SJaegeuk Kim goto got; 674e05df3b1SJaegeuk Kim } 675e05df3b1SJaegeuk Kim block -= direct_blks; 676e05df3b1SJaegeuk Kim if (block < indirect_blks) { 677e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 678e05df3b1SJaegeuk Kim noffset[n] = 3; 679e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 680e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 68125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 682e05df3b1SJaegeuk Kim level = 2; 683e05df3b1SJaegeuk Kim goto got; 684e05df3b1SJaegeuk Kim } 685e05df3b1SJaegeuk Kim block -= indirect_blks; 686e05df3b1SJaegeuk Kim if (block < indirect_blks) { 687e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 688e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 689e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 690e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 69125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 692e05df3b1SJaegeuk Kim level = 2; 693e05df3b1SJaegeuk Kim goto got; 694e05df3b1SJaegeuk Kim } 695e05df3b1SJaegeuk Kim block -= indirect_blks; 696e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 697e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 698e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 699e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 700e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 701e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 702e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 703e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 704e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 705e05df3b1SJaegeuk Kim offset[n - 1]; 70625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 707e05df3b1SJaegeuk Kim level = 3; 708e05df3b1SJaegeuk Kim goto got; 709e05df3b1SJaegeuk Kim } else { 710adb6dc19SJaegeuk Kim return -E2BIG; 711e05df3b1SJaegeuk Kim } 712e05df3b1SJaegeuk Kim got: 713e05df3b1SJaegeuk Kim return level; 714e05df3b1SJaegeuk Kim } 715e05df3b1SJaegeuk Kim 716e05df3b1SJaegeuk Kim /* 717e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7184f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7194f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 72039936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 721e05df3b1SJaegeuk Kim */ 7224d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 723e05df3b1SJaegeuk Kim { 7244081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 725e05df3b1SJaegeuk Kim struct page *npage[4]; 726f1a3b98eSJaegeuk Kim struct page *parent = NULL; 727e05df3b1SJaegeuk Kim int offset[4]; 728e05df3b1SJaegeuk Kim unsigned int noffset[4]; 729e05df3b1SJaegeuk Kim nid_t nids[4]; 7303cf45747SChao Yu int level, i = 0; 731e05df3b1SJaegeuk Kim int err = 0; 732e05df3b1SJaegeuk Kim 73381ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 734adb6dc19SJaegeuk Kim if (level < 0) 735adb6dc19SJaegeuk Kim return level; 736e05df3b1SJaegeuk Kim 737e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7381646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7391646cfacSJaegeuk Kim 7401646cfacSJaegeuk Kim if (!npage[0]) { 7414d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 742e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 743e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7441646cfacSJaegeuk Kim } 745f1a3b98eSJaegeuk Kim 746f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 747f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 74876629165SJaegeuk Kim err = -ENOENT; 749f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 750f1a3b98eSJaegeuk Kim goto release_out; 751f1a3b98eSJaegeuk Kim } 752f1a3b98eSJaegeuk Kim 753e05df3b1SJaegeuk Kim parent = npage[0]; 75452c2db3fSChangman Lee if (level != 0) 755e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 756e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 757e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 758e05df3b1SJaegeuk Kim 759e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 760e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 761e05df3b1SJaegeuk Kim bool done = false; 762e05df3b1SJaegeuk Kim 763266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 764e05df3b1SJaegeuk Kim /* alloc new node */ 7654d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 766e05df3b1SJaegeuk Kim err = -ENOSPC; 767e05df3b1SJaegeuk Kim goto release_pages; 768e05df3b1SJaegeuk Kim } 769e05df3b1SJaegeuk Kim 770e05df3b1SJaegeuk Kim dn->nid = nids[i]; 7714d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 772e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 7734d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 774e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 775e05df3b1SJaegeuk Kim goto release_pages; 776e05df3b1SJaegeuk Kim } 777e05df3b1SJaegeuk Kim 778e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 7794d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 780e05df3b1SJaegeuk Kim done = true; 781266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 7824d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 783e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 784e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 785e05df3b1SJaegeuk Kim goto release_pages; 786e05df3b1SJaegeuk Kim } 787e05df3b1SJaegeuk Kim done = true; 788e05df3b1SJaegeuk Kim } 789e05df3b1SJaegeuk Kim if (i == 1) { 790e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 791e05df3b1SJaegeuk Kim unlock_page(parent); 792e05df3b1SJaegeuk Kim } else { 793e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 794e05df3b1SJaegeuk Kim } 795e05df3b1SJaegeuk Kim 796e05df3b1SJaegeuk Kim if (!done) { 7974d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 798e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 799e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 800e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 801e05df3b1SJaegeuk Kim goto release_out; 802e05df3b1SJaegeuk Kim } 803e05df3b1SJaegeuk Kim } 804e05df3b1SJaegeuk Kim if (i < level) { 805e05df3b1SJaegeuk Kim parent = npage[i]; 806e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 807e05df3b1SJaegeuk Kim } 808e05df3b1SJaegeuk Kim } 809e05df3b1SJaegeuk Kim dn->nid = nids[level]; 810e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 811e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 8127a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 8137a2af766SChao Yu dn->node_page, dn->ofs_in_node); 814e05df3b1SJaegeuk Kim return 0; 815e05df3b1SJaegeuk Kim 816e05df3b1SJaegeuk Kim release_pages: 817e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 818e05df3b1SJaegeuk Kim if (i > 1) 819e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 820e05df3b1SJaegeuk Kim release_out: 821e05df3b1SJaegeuk Kim dn->inode_page = NULL; 822e05df3b1SJaegeuk Kim dn->node_page = NULL; 8233cf45747SChao Yu if (err == -ENOENT) { 8243cf45747SChao Yu dn->cur_level = i; 8253cf45747SChao Yu dn->max_level = level; 8260a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8273cf45747SChao Yu } 828e05df3b1SJaegeuk Kim return err; 829e05df3b1SJaegeuk Kim } 830e05df3b1SJaegeuk Kim 8317735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 832e05df3b1SJaegeuk Kim { 8334081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 834e05df3b1SJaegeuk Kim struct node_info ni; 8357735730dSChao Yu int err; 8360ea295ddSPan Bian pgoff_t index; 837e05df3b1SJaegeuk Kim 8387735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8397735730dSChao Yu if (err) 8407735730dSChao Yu return err; 841e05df3b1SJaegeuk Kim 842e05df3b1SJaegeuk Kim /* Deallocate node address */ 8434d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 844000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 845479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 846e05df3b1SJaegeuk Kim 847e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 8484d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 849e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 8500f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 851e05df3b1SJaegeuk Kim } 852000519f2SChao Yu 853e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 854caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 855e05df3b1SJaegeuk Kim 8560ea295ddSPan Bian index = dn->node_page->index; 857e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 858bf39c00aSJaegeuk Kim 859bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 8600ea295ddSPan Bian index, index); 861bf39c00aSJaegeuk Kim 862e05df3b1SJaegeuk Kim dn->node_page = NULL; 86351dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 8647735730dSChao Yu 8657735730dSChao Yu return 0; 866e05df3b1SJaegeuk Kim } 867e05df3b1SJaegeuk Kim 868e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 869e05df3b1SJaegeuk Kim { 870e05df3b1SJaegeuk Kim struct page *page; 8717735730dSChao Yu int err; 872e05df3b1SJaegeuk Kim 873e05df3b1SJaegeuk Kim if (dn->nid == 0) 874e05df3b1SJaegeuk Kim return 1; 875e05df3b1SJaegeuk Kim 876e05df3b1SJaegeuk Kim /* get direct node */ 8774d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 87845586c70SMasahiro Yamada if (PTR_ERR(page) == -ENOENT) 879e05df3b1SJaegeuk Kim return 1; 880e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 881e05df3b1SJaegeuk Kim return PTR_ERR(page); 882e05df3b1SJaegeuk Kim 883e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 884e05df3b1SJaegeuk Kim dn->node_page = page; 885e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 8864d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 8877735730dSChao Yu err = truncate_node(dn); 8887735730dSChao Yu if (err) 8897735730dSChao Yu return err; 8907735730dSChao Yu 891e05df3b1SJaegeuk Kim return 1; 892e05df3b1SJaegeuk Kim } 893e05df3b1SJaegeuk Kim 894e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 895e05df3b1SJaegeuk Kim int ofs, int depth) 896e05df3b1SJaegeuk Kim { 897e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 898e05df3b1SJaegeuk Kim struct page *page; 899e05df3b1SJaegeuk Kim struct f2fs_node *rn; 900e05df3b1SJaegeuk Kim nid_t child_nid; 901e05df3b1SJaegeuk Kim unsigned int child_nofs; 902e05df3b1SJaegeuk Kim int freed = 0; 903e05df3b1SJaegeuk Kim int i, ret; 904e05df3b1SJaegeuk Kim 905e05df3b1SJaegeuk Kim if (dn->nid == 0) 906e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 907e05df3b1SJaegeuk Kim 90851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 90951dd6249SNamjae Jeon 9104d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 91151dd6249SNamjae Jeon if (IS_ERR(page)) { 91251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 913e05df3b1SJaegeuk Kim return PTR_ERR(page); 91451dd6249SNamjae Jeon } 915e05df3b1SJaegeuk Kim 9164d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 91779344efbSJaegeuk Kim 91845590710SGu Zheng rn = F2FS_NODE(page); 919e05df3b1SJaegeuk Kim if (depth < 3) { 920e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 921e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 922e05df3b1SJaegeuk Kim if (child_nid == 0) 923e05df3b1SJaegeuk Kim continue; 924e05df3b1SJaegeuk Kim rdn.nid = child_nid; 925e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 926e05df3b1SJaegeuk Kim if (ret < 0) 927e05df3b1SJaegeuk Kim goto out_err; 92812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 92993bae099SJaegeuk Kim dn->node_changed = true; 930e05df3b1SJaegeuk Kim } 931e05df3b1SJaegeuk Kim } else { 932e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 933e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 934e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 935e05df3b1SJaegeuk Kim if (child_nid == 0) { 936e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 937e05df3b1SJaegeuk Kim continue; 938e05df3b1SJaegeuk Kim } 939e05df3b1SJaegeuk Kim rdn.nid = child_nid; 940e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 941e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 94212719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 94393bae099SJaegeuk Kim dn->node_changed = true; 944e05df3b1SJaegeuk Kim child_nofs += ret; 945e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 946e05df3b1SJaegeuk Kim goto out_err; 947e05df3b1SJaegeuk Kim } 948e05df3b1SJaegeuk Kim } 949e05df3b1SJaegeuk Kim freed = child_nofs; 950e05df3b1SJaegeuk Kim } 951e05df3b1SJaegeuk Kim 952e05df3b1SJaegeuk Kim if (!ofs) { 953e05df3b1SJaegeuk Kim /* remove current indirect node */ 954e05df3b1SJaegeuk Kim dn->node_page = page; 9557735730dSChao Yu ret = truncate_node(dn); 9567735730dSChao Yu if (ret) 9577735730dSChao Yu goto out_err; 958e05df3b1SJaegeuk Kim freed++; 959e05df3b1SJaegeuk Kim } else { 960e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 961e05df3b1SJaegeuk Kim } 96251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 963e05df3b1SJaegeuk Kim return freed; 964e05df3b1SJaegeuk Kim 965e05df3b1SJaegeuk Kim out_err: 966e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 96751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 968e05df3b1SJaegeuk Kim return ret; 969e05df3b1SJaegeuk Kim } 970e05df3b1SJaegeuk Kim 971e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 972e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 973e05df3b1SJaegeuk Kim { 974e05df3b1SJaegeuk Kim struct page *pages[2]; 975e05df3b1SJaegeuk Kim nid_t nid[3]; 976e05df3b1SJaegeuk Kim nid_t child_nid; 977e05df3b1SJaegeuk Kim int err = 0; 978e05df3b1SJaegeuk Kim int i; 979e05df3b1SJaegeuk Kim int idx = depth - 2; 980e05df3b1SJaegeuk Kim 981e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 982e05df3b1SJaegeuk Kim if (!nid[0]) 983e05df3b1SJaegeuk Kim return 0; 984e05df3b1SJaegeuk Kim 985e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 986a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 987e1c42045Sarter97 /* reference count'll be increased */ 9884d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 989e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 990e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 991a225dca3Sshifei10.ge idx = i - 1; 992e05df3b1SJaegeuk Kim goto fail; 993e05df3b1SJaegeuk Kim } 994e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 995e05df3b1SJaegeuk Kim } 996e05df3b1SJaegeuk Kim 9974d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 99879344efbSJaegeuk Kim 999e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 1000a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1001e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1002e05df3b1SJaegeuk Kim if (!child_nid) 1003e05df3b1SJaegeuk Kim continue; 1004e05df3b1SJaegeuk Kim dn->nid = child_nid; 1005e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1006e05df3b1SJaegeuk Kim if (err < 0) 1007e05df3b1SJaegeuk Kim goto fail; 100812719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 100993bae099SJaegeuk Kim dn->node_changed = true; 1010e05df3b1SJaegeuk Kim } 1011e05df3b1SJaegeuk Kim 1012a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1013e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1014e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10157735730dSChao Yu err = truncate_node(dn); 10167735730dSChao Yu if (err) 10177735730dSChao Yu goto fail; 1018e05df3b1SJaegeuk Kim } else { 1019e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1020e05df3b1SJaegeuk Kim } 1021e05df3b1SJaegeuk Kim offset[idx]++; 1022a225dca3Sshifei10.ge offset[idx + 1] = 0; 1023a225dca3Sshifei10.ge idx--; 1024e05df3b1SJaegeuk Kim fail: 1025a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1026e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 102751dd6249SNamjae Jeon 102851dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 102951dd6249SNamjae Jeon 1030e05df3b1SJaegeuk Kim return err; 1031e05df3b1SJaegeuk Kim } 1032e05df3b1SJaegeuk Kim 10330a8165d7SJaegeuk Kim /* 1034e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1035e05df3b1SJaegeuk Kim */ 10364d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1037e05df3b1SJaegeuk Kim { 10384081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1039e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1040e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10417dd690c8SJaegeuk Kim unsigned int nofs = 0; 104258bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1043e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1044e05df3b1SJaegeuk Kim struct page *page; 1045e05df3b1SJaegeuk Kim 104651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 104751dd6249SNamjae Jeon 104881ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 1049adb6dc19SJaegeuk Kim if (level < 0) 1050adb6dc19SJaegeuk Kim return level; 1051ff373558SJaegeuk Kim 10524d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 105351dd6249SNamjae Jeon if (IS_ERR(page)) { 105451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1055e05df3b1SJaegeuk Kim return PTR_ERR(page); 105651dd6249SNamjae Jeon } 1057e05df3b1SJaegeuk Kim 1058e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1059e05df3b1SJaegeuk Kim unlock_page(page); 1060e05df3b1SJaegeuk Kim 106158bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1062e05df3b1SJaegeuk Kim switch (level) { 1063e05df3b1SJaegeuk Kim case 0: 1064e05df3b1SJaegeuk Kim case 1: 1065e05df3b1SJaegeuk Kim nofs = noffset[1]; 1066e05df3b1SJaegeuk Kim break; 1067e05df3b1SJaegeuk Kim case 2: 1068e05df3b1SJaegeuk Kim nofs = noffset[1]; 1069e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1070e05df3b1SJaegeuk Kim goto skip_partial; 107158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1072e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1073e05df3b1SJaegeuk Kim goto fail; 1074e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1075e05df3b1SJaegeuk Kim break; 1076e05df3b1SJaegeuk Kim case 3: 1077e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1078e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1079e05df3b1SJaegeuk Kim goto skip_partial; 108058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1081e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1082e05df3b1SJaegeuk Kim goto fail; 1083e05df3b1SJaegeuk Kim break; 1084e05df3b1SJaegeuk Kim default: 1085e05df3b1SJaegeuk Kim BUG(); 1086e05df3b1SJaegeuk Kim } 1087e05df3b1SJaegeuk Kim 1088e05df3b1SJaegeuk Kim skip_partial: 1089e05df3b1SJaegeuk Kim while (cont) { 109058bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1091e05df3b1SJaegeuk Kim switch (offset[0]) { 1092e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1093e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1094e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1095e05df3b1SJaegeuk Kim break; 1096e05df3b1SJaegeuk Kim 1097e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1098e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1099e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1100e05df3b1SJaegeuk Kim break; 1101e05df3b1SJaegeuk Kim 1102e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1103e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1104e05df3b1SJaegeuk Kim cont = 0; 1105e05df3b1SJaegeuk Kim break; 1106e05df3b1SJaegeuk Kim 1107e05df3b1SJaegeuk Kim default: 1108e05df3b1SJaegeuk Kim BUG(); 1109e05df3b1SJaegeuk Kim } 1110e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1111e05df3b1SJaegeuk Kim goto fail; 1112e05df3b1SJaegeuk Kim if (offset[1] == 0 && 111358bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1114e05df3b1SJaegeuk Kim lock_page(page); 1115ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1116bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 111758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1118e05df3b1SJaegeuk Kim set_page_dirty(page); 1119e05df3b1SJaegeuk Kim unlock_page(page); 1120e05df3b1SJaegeuk Kim } 1121e05df3b1SJaegeuk Kim offset[1] = 0; 1122e05df3b1SJaegeuk Kim offset[0]++; 1123e05df3b1SJaegeuk Kim nofs += err; 1124e05df3b1SJaegeuk Kim } 1125e05df3b1SJaegeuk Kim fail: 1126e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 112751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1128e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1129e05df3b1SJaegeuk Kim } 1130e05df3b1SJaegeuk Kim 11319c77f754SJaegeuk Kim /* caller must lock inode page */ 11324d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11334f16fb0fSJaegeuk Kim { 11344081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11354f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11364f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11374f16fb0fSJaegeuk Kim struct page *npage; 11387735730dSChao Yu int err; 11394f16fb0fSJaegeuk Kim 11404f16fb0fSJaegeuk Kim if (!nid) 11414f16fb0fSJaegeuk Kim return 0; 11424f16fb0fSJaegeuk Kim 11434d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11444f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11454f16fb0fSJaegeuk Kim return PTR_ERR(npage); 11464f16fb0fSJaegeuk Kim 11477735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 11487735730dSChao Yu err = truncate_node(&dn); 11497735730dSChao Yu if (err) { 11507735730dSChao Yu f2fs_put_page(npage, 1); 11517735730dSChao Yu return err; 11527735730dSChao Yu } 11537735730dSChao Yu 1154205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 115565985d93SJaegeuk Kim 11564f16fb0fSJaegeuk Kim return 0; 11574f16fb0fSJaegeuk Kim } 11584f16fb0fSJaegeuk Kim 115939936837SJaegeuk Kim /* 11604f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 11614f4124d0SChao Yu * f2fs_unlock_op(). 116239936837SJaegeuk Kim */ 11634d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1164e05df3b1SJaegeuk Kim { 1165e05df3b1SJaegeuk Kim struct dnode_of_data dn; 116613ec7297SChao Yu int err; 1167e05df3b1SJaegeuk Kim 1168c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 11694d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 117013ec7297SChao Yu if (err) 117113ec7297SChao Yu return err; 1172e05df3b1SJaegeuk Kim 11734d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 117413ec7297SChao Yu if (err) { 1175c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 117613ec7297SChao Yu return err; 1177e05df3b1SJaegeuk Kim } 1178c2e69583SJaegeuk Kim 1179c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1180c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1181c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 11824d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1183c2e69583SJaegeuk Kim 1184e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 11858d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 11868d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 11878d714f8aSJaegeuk Kim return -EIO; 11888d714f8aSJaegeuk Kim } 11898b6810f8SChao Yu 11908b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 1191097a7686SChao Yu f2fs_warn(F2FS_I_SB(inode), 1192097a7686SChao Yu "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu", 1193dcbb4c10SJoe Perches inode->i_ino, (unsigned long long)inode->i_blocks); 11948b6810f8SChao Yu set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); 11958b6810f8SChao Yu } 1196c2e69583SJaegeuk Kim 1197c2e69583SJaegeuk Kim /* will put inode & node pages */ 11987735730dSChao Yu err = truncate_node(&dn); 11997735730dSChao Yu if (err) { 12007735730dSChao Yu f2fs_put_dnode(&dn); 12017735730dSChao Yu return err; 12027735730dSChao Yu } 120313ec7297SChao Yu return 0; 1204e05df3b1SJaegeuk Kim } 1205e05df3b1SJaegeuk Kim 12064d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1207e05df3b1SJaegeuk Kim { 1208e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1209e05df3b1SJaegeuk Kim 1210e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1211e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 121244a83ff6SJaegeuk Kim 121344a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12144d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1215e05df3b1SJaegeuk Kim } 1216e05df3b1SJaegeuk Kim 12174d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1218e05df3b1SJaegeuk Kim { 12194081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 122025cc5d3bSJaegeuk Kim struct node_info new_ni; 1221e05df3b1SJaegeuk Kim struct page *page; 1222e05df3b1SJaegeuk Kim int err; 1223e05df3b1SJaegeuk Kim 122491942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1225e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1226e05df3b1SJaegeuk Kim 1227300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1228e05df3b1SJaegeuk Kim if (!page) 1229e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1230e05df3b1SJaegeuk Kim 12310abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12329c02740cSJaegeuk Kim goto fail; 12330abd675eSChao Yu 123425cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 12357735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 12367735730dSChao Yu if (err) { 12377735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12387735730dSChao Yu goto fail; 12397735730dSChao Yu } 124025cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 124125cc5d3bSJaegeuk Kim #endif 124225cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1243e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 124425cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 124525cc5d3bSJaegeuk Kim new_ni.flag = 0; 124625cc5d3bSJaegeuk Kim new_ni.version = 0; 1247479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 12489c02740cSJaegeuk Kim 1249bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 12509c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1251c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1252237c0790SJaegeuk Kim if (!PageUptodate(page)) 12539c02740cSJaegeuk Kim SetPageUptodate(page); 125412719ae1SJaegeuk Kim if (set_page_dirty(page)) 125512719ae1SJaegeuk Kim dn->node_changed = true; 1256e05df3b1SJaegeuk Kim 12574bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1258205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1259479bd73aSJaegeuk Kim 1260e05df3b1SJaegeuk Kim if (ofs == 0) 1261e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1262e05df3b1SJaegeuk Kim return page; 1263e05df3b1SJaegeuk Kim 1264e05df3b1SJaegeuk Kim fail: 126571e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1266e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1267e05df3b1SJaegeuk Kim return ERR_PTR(err); 1268e05df3b1SJaegeuk Kim } 1269e05df3b1SJaegeuk Kim 127056ae674cSJaegeuk Kim /* 127156ae674cSJaegeuk Kim * Caller should do after getting the following values. 127256ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 127386531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 127456ae674cSJaegeuk Kim */ 127504d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1276e05df3b1SJaegeuk Kim { 12774081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1278e05df3b1SJaegeuk Kim struct node_info ni; 1279cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 128005ca3632SJaegeuk Kim .sbi = sbi, 1281cf04e8ebSJaegeuk Kim .type = NODE, 128204d328deSMike Christie .op = REQ_OP_READ, 128304d328deSMike Christie .op_flags = op_flags, 128405ca3632SJaegeuk Kim .page = page, 12854375a336SJaegeuk Kim .encrypted_page = NULL, 1286cf04e8ebSJaegeuk Kim }; 12877735730dSChao Yu int err; 1288e05df3b1SJaegeuk Kim 128954c55c4eSWeichao Guo if (PageUptodate(page)) { 1290b42b179bSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1291b42b179bSChao Yu ClearPageUptodate(page); 129210f966bbSChao Yu return -EFSBADCRC; 1293b42b179bSChao Yu } 12943bdad3c7SJaegeuk Kim return LOCKED_PAGE; 129554c55c4eSWeichao Guo } 12963bdad3c7SJaegeuk Kim 12977735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 12987735730dSChao Yu if (err) 12997735730dSChao Yu return err; 1300e05df3b1SJaegeuk Kim 130183a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 130283a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 13032bca1e23SJaegeuk Kim ClearPageUptodate(page); 1304e05df3b1SJaegeuk Kim return -ENOENT; 1305393ff91fSJaegeuk Kim } 1306393ff91fSJaegeuk Kim 13077a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 130805ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1309e05df3b1SJaegeuk Kim } 1310e05df3b1SJaegeuk Kim 13110a8165d7SJaegeuk Kim /* 1312e05df3b1SJaegeuk Kim * Readahead a node page 1313e05df3b1SJaegeuk Kim */ 13144d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1315e05df3b1SJaegeuk Kim { 1316e05df3b1SJaegeuk Kim struct page *apage; 131756ae674cSJaegeuk Kim int err; 1318e05df3b1SJaegeuk Kim 1319e8458725SChao Yu if (!nid) 1320e8458725SChao Yu return; 13214d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1322a4f843bdSJaegeuk Kim return; 1323e8458725SChao Yu 13245ec2d99dSMatthew Wilcox apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); 1325999270deSFan Li if (apage) 1326393ff91fSJaegeuk Kim return; 1327e05df3b1SJaegeuk Kim 1328300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1329e05df3b1SJaegeuk Kim if (!apage) 1330e05df3b1SJaegeuk Kim return; 1331e05df3b1SJaegeuk Kim 133270246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 133386531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1334e05df3b1SJaegeuk Kim } 1335e05df3b1SJaegeuk Kim 133617a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 13370e022ea8SChao Yu struct page *parent, int start) 1338e05df3b1SJaegeuk Kim { 133956ae674cSJaegeuk Kim struct page *page; 134056ae674cSJaegeuk Kim int err; 13414aa69d56SJaegeuk Kim 13424aa69d56SJaegeuk Kim if (!nid) 13434aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 13444d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1345a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1346afcb7ca0SJaegeuk Kim repeat: 1347300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1348e05df3b1SJaegeuk Kim if (!page) 1349e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1350e05df3b1SJaegeuk Kim 135170fd7614SChristoph Hellwig err = read_node_page(page, 0); 135286531d6bSJaegeuk Kim if (err < 0) { 135386531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1354e05df3b1SJaegeuk Kim return ERR_PTR(err); 1355e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 13561f258ec1SChao Yu err = 0; 1357e1c51b9fSChao Yu goto page_hit; 135886531d6bSJaegeuk Kim } 1359aaf96075SJaegeuk Kim 13600e022ea8SChao Yu if (parent) 13614d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 13620e022ea8SChao Yu 1363e1c51b9fSChao Yu lock_page(page); 1364e1c51b9fSChao Yu 13654ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1366afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1367afcb7ca0SJaegeuk Kim goto repeat; 1368afcb7ca0SJaegeuk Kim } 13691563ac75SChao Yu 13701f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 13711f258ec1SChao Yu err = -EIO; 13721563ac75SChao Yu goto out_err; 13731f258ec1SChao Yu } 1374704956ecSChao Yu 1375704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 137610f966bbSChao Yu err = -EFSBADCRC; 1377704956ecSChao Yu goto out_err; 1378704956ecSChao Yu } 1379e1c51b9fSChao Yu page_hit: 13800c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 1381dcbb4c10SJoe Perches f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 13821f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 13831f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 13841f258ec1SChao Yu next_blkaddr_of_node(page)); 13851f258ec1SChao Yu err = -EINVAL; 13860c9df7fbSYunlong Song out_err: 1387ee605234SJaegeuk Kim ClearPageUptodate(page); 13880c9df7fbSYunlong Song f2fs_put_page(page, 1); 13891f258ec1SChao Yu return ERR_PTR(err); 13900c9df7fbSYunlong Song } 1391e05df3b1SJaegeuk Kim return page; 1392e05df3b1SJaegeuk Kim } 1393e05df3b1SJaegeuk Kim 13944d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 13950e022ea8SChao Yu { 13960e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 13970e022ea8SChao Yu } 13980e022ea8SChao Yu 13994d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1400e05df3b1SJaegeuk Kim { 14014081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14020e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1403e05df3b1SJaegeuk Kim 14040e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1405e05df3b1SJaegeuk Kim } 1406e05df3b1SJaegeuk Kim 14072049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14082049d4fcSJaegeuk Kim { 14092049d4fcSJaegeuk Kim struct inode *inode; 14102049d4fcSJaegeuk Kim struct page *page; 14110f3311a8SChao Yu int ret; 14122049d4fcSJaegeuk Kim 14132049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14142049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14152049d4fcSJaegeuk Kim if (!inode) 14162049d4fcSJaegeuk Kim return; 14172049d4fcSJaegeuk Kim 141801eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 141901eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14202049d4fcSJaegeuk Kim if (!page) 14212049d4fcSJaegeuk Kim goto iput_out; 14222049d4fcSJaegeuk Kim 14232049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14242049d4fcSJaegeuk Kim goto page_out; 14252049d4fcSJaegeuk Kim 14262049d4fcSJaegeuk Kim if (!PageDirty(page)) 14272049d4fcSJaegeuk Kim goto page_out; 14282049d4fcSJaegeuk Kim 14292049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14302049d4fcSJaegeuk Kim goto page_out; 14312049d4fcSJaegeuk Kim 14320f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14332049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 14344d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 14350f3311a8SChao Yu if (ret) 14362049d4fcSJaegeuk Kim set_page_dirty(page); 14372049d4fcSJaegeuk Kim page_out: 14384a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 14392049d4fcSJaegeuk Kim iput_out: 14402049d4fcSJaegeuk Kim iput(inode); 14412049d4fcSJaegeuk Kim } 14422049d4fcSJaegeuk Kim 1443608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1444e05df3b1SJaegeuk Kim { 1445028a63a6SJan Kara pgoff_t index; 1446e05df3b1SJaegeuk Kim struct pagevec pvec; 1447608514deSJaegeuk Kim struct page *last_page = NULL; 1448028a63a6SJan Kara int nr_pages; 144952681375SJaegeuk Kim 145086679820SMel Gorman pagevec_init(&pvec); 145152681375SJaegeuk Kim index = 0; 145252681375SJaegeuk Kim 1453028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 145467fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1455028a63a6SJan Kara int i; 145652681375SJaegeuk Kim 145752681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 145852681375SJaegeuk Kim struct page *page = pvec.pages[i]; 145952681375SJaegeuk Kim 146052681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1461608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 146252681375SJaegeuk Kim pagevec_release(&pvec); 1463608514deSJaegeuk Kim return ERR_PTR(-EIO); 146452681375SJaegeuk Kim } 146552681375SJaegeuk Kim 146652681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 146752681375SJaegeuk Kim continue; 146852681375SJaegeuk Kim if (ino_of_node(page) != ino) 146952681375SJaegeuk Kim continue; 147052681375SJaegeuk Kim 147152681375SJaegeuk Kim lock_page(page); 147252681375SJaegeuk Kim 147352681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 147452681375SJaegeuk Kim continue_unlock: 147552681375SJaegeuk Kim unlock_page(page); 147652681375SJaegeuk Kim continue; 147752681375SJaegeuk Kim } 147852681375SJaegeuk Kim if (ino_of_node(page) != ino) 147952681375SJaegeuk Kim goto continue_unlock; 148052681375SJaegeuk Kim 148152681375SJaegeuk Kim if (!PageDirty(page)) { 148252681375SJaegeuk Kim /* someone wrote it for us */ 148352681375SJaegeuk Kim goto continue_unlock; 148452681375SJaegeuk Kim } 148552681375SJaegeuk Kim 1486608514deSJaegeuk Kim if (last_page) 1487608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1488608514deSJaegeuk Kim 1489608514deSJaegeuk Kim get_page(page); 1490608514deSJaegeuk Kim last_page = page; 1491608514deSJaegeuk Kim unlock_page(page); 1492608514deSJaegeuk Kim } 1493608514deSJaegeuk Kim pagevec_release(&pvec); 1494608514deSJaegeuk Kim cond_resched(); 1495608514deSJaegeuk Kim } 1496608514deSJaegeuk Kim return last_page; 1497608514deSJaegeuk Kim } 1498608514deSJaegeuk Kim 1499d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1500b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 150150fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1502faa24895SJaegeuk Kim { 1503faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1504faa24895SJaegeuk Kim nid_t nid; 1505faa24895SJaegeuk Kim struct node_info ni; 1506faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1507faa24895SJaegeuk Kim .sbi = sbi, 150839d787beSChao Yu .ino = ino_of_node(page), 1509faa24895SJaegeuk Kim .type = NODE, 1510faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1511faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1512faa24895SJaegeuk Kim .page = page, 1513faa24895SJaegeuk Kim .encrypted_page = NULL, 1514d68f735bSJaegeuk Kim .submitted = false, 1515b0af6d49SChao Yu .io_type = io_type, 1516578c6478SYufen Yu .io_wbc = wbc, 1517faa24895SJaegeuk Kim }; 151850fa53ecSChao Yu unsigned int seq; 1519faa24895SJaegeuk Kim 1520faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1521faa24895SJaegeuk Kim 1522868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1523868de613SJaegeuk Kim goto redirty_out; 1524db198ae0SChao Yu 1525faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1526faa24895SJaegeuk Kim goto redirty_out; 1527faa24895SJaegeuk Kim 1528100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1529100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && 1530fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1531fd8c8cafSChao Yu goto redirty_out; 1532fd8c8cafSChao Yu 1533faa24895SJaegeuk Kim /* get old block addr of this node page */ 1534faa24895SJaegeuk Kim nid = nid_of_node(page); 1535faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1536faa24895SJaegeuk Kim 15377735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 15387735730dSChao Yu goto redirty_out; 15397735730dSChao Yu 1540faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1541faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1542faa24895SJaegeuk Kim goto redirty_out; 1543faa24895SJaegeuk Kim } else { 1544faa24895SJaegeuk Kim down_read(&sbi->node_write); 1545faa24895SJaegeuk Kim } 1546faa24895SJaegeuk Kim 1547faa24895SJaegeuk Kim /* This page is already truncated */ 1548faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1549faa24895SJaegeuk Kim ClearPageUptodate(page); 1550faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1551faa24895SJaegeuk Kim up_read(&sbi->node_write); 1552faa24895SJaegeuk Kim unlock_page(page); 1553faa24895SJaegeuk Kim return 0; 1554faa24895SJaegeuk Kim } 1555faa24895SJaegeuk Kim 1556c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 155793770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, 155893770ab7SChao Yu DATA_GENERIC_ENHANCE)) { 155989d13c38SJaegeuk Kim up_read(&sbi->node_write); 1560c9b60788SChao Yu goto redirty_out; 156189d13c38SJaegeuk Kim } 1562c9b60788SChao Yu 1563e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1564e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1565e7c75ab0SJaegeuk Kim 1566dc5a9412SChao Yu /* should add to global list before clearing PAGECACHE status */ 156750fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 156850fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 156950fa53ecSChao Yu if (seq_id) 157050fa53ecSChao Yu *seq_id = seq; 157150fa53ecSChao Yu } 157250fa53ecSChao Yu 1573dc5a9412SChao Yu set_page_writeback(page); 1574dc5a9412SChao Yu ClearPageError(page); 1575dc5a9412SChao Yu 1576faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 15774d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1578faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1579faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1580faa24895SJaegeuk Kim up_read(&sbi->node_write); 1581faa24895SJaegeuk Kim 1582d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1583bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1584d68f735bSJaegeuk Kim submitted = NULL; 1585d68f735bSJaegeuk Kim } 1586faa24895SJaegeuk Kim 1587faa24895SJaegeuk Kim unlock_page(page); 1588faa24895SJaegeuk Kim 1589d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1590b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1591d68f735bSJaegeuk Kim submitted = NULL; 1592d68f735bSJaegeuk Kim } 1593d68f735bSJaegeuk Kim if (submitted) 1594d68f735bSJaegeuk Kim *submitted = fio.submitted; 1595faa24895SJaegeuk Kim 1596401db79fSYunlong Song if (do_balance) 1597401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1598faa24895SJaegeuk Kim return 0; 1599faa24895SJaegeuk Kim 1600faa24895SJaegeuk Kim redirty_out: 1601faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1602faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1603faa24895SJaegeuk Kim } 1604faa24895SJaegeuk Kim 160548018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1606f15194fcSYunlei He { 160748018b4cSChao Yu int err = 0; 160848018b4cSChao Yu 1609f15194fcSYunlei He if (gc_type == FG_GC) { 1610f15194fcSYunlei He struct writeback_control wbc = { 1611f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1612f15194fcSYunlei He .nr_to_write = 1, 1613f15194fcSYunlei He .for_reclaim = 0, 1614f15194fcSYunlei He }; 1615f15194fcSYunlei He 1616bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16178d64d365SChao Yu 16188d64d365SChao Yu set_page_dirty(node_page); 16198d64d365SChao Yu 162048018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 162148018b4cSChao Yu err = -EAGAIN; 1622f15194fcSYunlei He goto out_page; 162348018b4cSChao Yu } 1624f15194fcSYunlei He 1625f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 162648018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 162748018b4cSChao Yu err = -EAGAIN; 1628f15194fcSYunlei He unlock_page(node_page); 162948018b4cSChao Yu } 1630f15194fcSYunlei He goto release_page; 1631f15194fcSYunlei He } else { 1632f15194fcSYunlei He /* set page dirty and write it */ 1633f15194fcSYunlei He if (!PageWriteback(node_page)) 1634f15194fcSYunlei He set_page_dirty(node_page); 1635f15194fcSYunlei He } 1636f15194fcSYunlei He out_page: 1637f15194fcSYunlei He unlock_page(node_page); 1638f15194fcSYunlei He release_page: 1639f15194fcSYunlei He f2fs_put_page(node_page, 0); 164048018b4cSChao Yu return err; 1641f15194fcSYunlei He } 1642f15194fcSYunlei He 1643faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1644faa24895SJaegeuk Kim struct writeback_control *wbc) 1645faa24895SJaegeuk Kim { 164650fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 164750fa53ecSChao Yu FS_NODE_IO, NULL); 1648faa24895SJaegeuk Kim } 1649faa24895SJaegeuk Kim 16504d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 165150fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 165250fa53ecSChao Yu unsigned int *seq_id) 1653608514deSJaegeuk Kim { 1654028a63a6SJan Kara pgoff_t index; 1655608514deSJaegeuk Kim struct pagevec pvec; 1656608514deSJaegeuk Kim int ret = 0; 1657608514deSJaegeuk Kim struct page *last_page = NULL; 1658608514deSJaegeuk Kim bool marked = false; 165926de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1660028a63a6SJan Kara int nr_pages; 1661bab475c5SChao Yu int nwritten = 0; 1662608514deSJaegeuk Kim 1663608514deSJaegeuk Kim if (atomic) { 1664608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1665608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1666608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1667608514deSJaegeuk Kim } 1668608514deSJaegeuk Kim retry: 166986679820SMel Gorman pagevec_init(&pvec); 1670608514deSJaegeuk Kim index = 0; 1671608514deSJaegeuk Kim 1672028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 167367fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1674028a63a6SJan Kara int i; 1675608514deSJaegeuk Kim 1676608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1677608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1678d68f735bSJaegeuk Kim bool submitted = false; 1679608514deSJaegeuk Kim 1680608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1681608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1682608514deSJaegeuk Kim pagevec_release(&pvec); 16839de69279SChao Yu ret = -EIO; 16849de69279SChao Yu goto out; 1685608514deSJaegeuk Kim } 1686608514deSJaegeuk Kim 1687608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1688608514deSJaegeuk Kim continue; 1689608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1690608514deSJaegeuk Kim continue; 1691608514deSJaegeuk Kim 1692608514deSJaegeuk Kim lock_page(page); 1693608514deSJaegeuk Kim 1694608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1695608514deSJaegeuk Kim continue_unlock: 1696608514deSJaegeuk Kim unlock_page(page); 1697608514deSJaegeuk Kim continue; 1698608514deSJaegeuk Kim } 1699608514deSJaegeuk Kim if (ino_of_node(page) != ino) 170052681375SJaegeuk Kim goto continue_unlock; 170152681375SJaegeuk Kim 1702608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1703608514deSJaegeuk Kim /* someone wrote it for us */ 1704608514deSJaegeuk Kim goto continue_unlock; 1705608514deSJaegeuk Kim } 1706608514deSJaegeuk Kim 1707bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1708608514deSJaegeuk Kim 1709d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1710d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1711d29fd172SJaegeuk Kim 1712608514deSJaegeuk Kim if (!atomic || page == last_page) { 171352681375SJaegeuk Kim set_fsync_mark(page, 1); 171426de9b11SJaegeuk Kim if (IS_INODE(page)) { 171526de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 171626de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17174d57b86dSChao Yu f2fs_update_inode(inode, page); 171852681375SJaegeuk Kim set_dentry_mark(page, 17194d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 172026de9b11SJaegeuk Kim } 1721608514deSJaegeuk Kim /* may be written by other thread */ 1722608514deSJaegeuk Kim if (!PageDirty(page)) 1723608514deSJaegeuk Kim set_page_dirty(page); 1724608514deSJaegeuk Kim } 1725608514deSJaegeuk Kim 1726608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1727608514deSJaegeuk Kim goto continue_unlock; 172852681375SJaegeuk Kim 1729e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1730d68f735bSJaegeuk Kim page == last_page, 1731b0af6d49SChao Yu &submitted, wbc, true, 173250fa53ecSChao Yu FS_NODE_IO, seq_id); 1733c267ec15SJaegeuk Kim if (ret) { 173452681375SJaegeuk Kim unlock_page(page); 1735608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1736608514deSJaegeuk Kim break; 1737d68f735bSJaegeuk Kim } else if (submitted) { 1738bab475c5SChao Yu nwritten++; 1739608514deSJaegeuk Kim } 17403f5f4959SChao Yu 1741608514deSJaegeuk Kim if (page == last_page) { 1742608514deSJaegeuk Kim f2fs_put_page(page, 0); 1743608514deSJaegeuk Kim marked = true; 174452681375SJaegeuk Kim break; 174552681375SJaegeuk Kim } 1746c267ec15SJaegeuk Kim } 174752681375SJaegeuk Kim pagevec_release(&pvec); 174852681375SJaegeuk Kim cond_resched(); 174952681375SJaegeuk Kim 1750608514deSJaegeuk Kim if (ret || marked) 175152681375SJaegeuk Kim break; 175252681375SJaegeuk Kim } 1753608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1754dcbb4c10SJoe Perches f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx", 1755608514deSJaegeuk Kim ino, last_page->index); 1756608514deSJaegeuk Kim lock_page(last_page); 1757bae0ee7aSChao Yu f2fs_wait_on_page_writeback(last_page, NODE, true, true); 1758608514deSJaegeuk Kim set_page_dirty(last_page); 1759608514deSJaegeuk Kim unlock_page(last_page); 1760608514deSJaegeuk Kim goto retry; 1761608514deSJaegeuk Kim } 17629de69279SChao Yu out: 1763bab475c5SChao Yu if (nwritten) 1764bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1765c267ec15SJaegeuk Kim return ret ? -EIO: 0; 176652681375SJaegeuk Kim } 176752681375SJaegeuk Kim 1768052a82d8SChao Yu static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data) 1769052a82d8SChao Yu { 1770052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1771052a82d8SChao Yu bool clean; 1772052a82d8SChao Yu 1773052a82d8SChao Yu if (inode->i_ino != ino) 1774052a82d8SChao Yu return 0; 1775052a82d8SChao Yu 1776052a82d8SChao Yu if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 1777052a82d8SChao Yu return 0; 1778052a82d8SChao Yu 1779052a82d8SChao Yu spin_lock(&sbi->inode_lock[DIRTY_META]); 1780052a82d8SChao Yu clean = list_empty(&F2FS_I(inode)->gdirty_list); 1781052a82d8SChao Yu spin_unlock(&sbi->inode_lock[DIRTY_META]); 1782052a82d8SChao Yu 1783052a82d8SChao Yu if (clean) 1784052a82d8SChao Yu return 0; 1785052a82d8SChao Yu 1786052a82d8SChao Yu inode = igrab(inode); 1787052a82d8SChao Yu if (!inode) 1788052a82d8SChao Yu return 0; 1789052a82d8SChao Yu return 1; 1790052a82d8SChao Yu } 1791052a82d8SChao Yu 1792052a82d8SChao Yu static bool flush_dirty_inode(struct page *page) 1793052a82d8SChao Yu { 1794052a82d8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1795052a82d8SChao Yu struct inode *inode; 1796052a82d8SChao Yu nid_t ino = ino_of_node(page); 1797052a82d8SChao Yu 1798052a82d8SChao Yu inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL); 1799052a82d8SChao Yu if (!inode) 1800052a82d8SChao Yu return false; 1801052a82d8SChao Yu 1802052a82d8SChao Yu f2fs_update_inode(inode, page); 1803052a82d8SChao Yu unlock_page(page); 1804052a82d8SChao Yu 1805052a82d8SChao Yu iput(inode); 1806052a82d8SChao Yu return true; 1807052a82d8SChao Yu } 1808052a82d8SChao Yu 18094d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 18104d57b86dSChao Yu struct writeback_control *wbc, 1811b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 181252681375SJaegeuk Kim { 1813028a63a6SJan Kara pgoff_t index; 181452681375SJaegeuk Kim struct pagevec pvec; 181552681375SJaegeuk Kim int step = 0; 181612bb0a8fSJaegeuk Kim int nwritten = 0; 18173f5f4959SChao Yu int ret = 0; 1818c29fd0c0SChao Yu int nr_pages, done = 0; 1819e05df3b1SJaegeuk Kim 182086679820SMel Gorman pagevec_init(&pvec); 1821e05df3b1SJaegeuk Kim 1822e05df3b1SJaegeuk Kim next_step: 1823e05df3b1SJaegeuk Kim index = 0; 1824e05df3b1SJaegeuk Kim 1825c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1826c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1827028a63a6SJan Kara int i; 1828e05df3b1SJaegeuk Kim 1829e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1830e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1831d68f735bSJaegeuk Kim bool submitted = false; 1832052a82d8SChao Yu bool may_dirty = true; 1833e05df3b1SJaegeuk Kim 1834c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1835c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1836c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1837c29fd0c0SChao Yu done = 1; 1838c29fd0c0SChao Yu break; 1839c29fd0c0SChao Yu } 1840c29fd0c0SChao Yu 1841e05df3b1SJaegeuk Kim /* 1842e05df3b1SJaegeuk Kim * flushing sequence with step: 1843e05df3b1SJaegeuk Kim * 0. indirect nodes 1844e05df3b1SJaegeuk Kim * 1. dentry dnodes 1845e05df3b1SJaegeuk Kim * 2. file dnodes 1846e05df3b1SJaegeuk Kim */ 1847e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1848e05df3b1SJaegeuk Kim continue; 1849e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1850e05df3b1SJaegeuk Kim is_cold_node(page))) 1851e05df3b1SJaegeuk Kim continue; 1852e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1853e05df3b1SJaegeuk Kim !is_cold_node(page))) 1854e05df3b1SJaegeuk Kim continue; 18559a4cbc9eSChao Yu lock_node: 18564b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 18574b270a8cSChao Yu lock_page(page); 18584b270a8cSChao Yu else if (!trylock_page(page)) 1859e05df3b1SJaegeuk Kim continue; 1860e05df3b1SJaegeuk Kim 18614ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1862e05df3b1SJaegeuk Kim continue_unlock: 1863e05df3b1SJaegeuk Kim unlock_page(page); 1864e05df3b1SJaegeuk Kim continue; 1865e05df3b1SJaegeuk Kim } 1866e05df3b1SJaegeuk Kim 1867e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1868e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1869e05df3b1SJaegeuk Kim goto continue_unlock; 1870e05df3b1SJaegeuk Kim } 1871e05df3b1SJaegeuk Kim 18722049d4fcSJaegeuk Kim /* flush inline_data */ 187352681375SJaegeuk Kim if (is_inline_node(page)) { 18742049d4fcSJaegeuk Kim clear_inline_node(page); 18752049d4fcSJaegeuk Kim unlock_page(page); 18762049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 18779a4cbc9eSChao Yu goto lock_node; 18782049d4fcSJaegeuk Kim } 18792049d4fcSJaegeuk Kim 1880052a82d8SChao Yu /* flush dirty inode */ 1881052a82d8SChao Yu if (IS_INODE(page) && may_dirty) { 1882052a82d8SChao Yu may_dirty = false; 1883052a82d8SChao Yu if (flush_dirty_inode(page)) 1884052a82d8SChao Yu goto lock_node; 1885052a82d8SChao Yu } 1886052a82d8SChao Yu 1887bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1888fa3d2bdfSJaegeuk Kim 1889e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1890e05df3b1SJaegeuk Kim goto continue_unlock; 1891e05df3b1SJaegeuk Kim 1892e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1893e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 189452746519SJaegeuk Kim 1895401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 189650fa53ecSChao Yu wbc, do_balance, io_type, NULL); 1897d68f735bSJaegeuk Kim if (ret) 189852746519SJaegeuk Kim unlock_page(page); 1899d68f735bSJaegeuk Kim else if (submitted) 19003f5f4959SChao Yu nwritten++; 1901e05df3b1SJaegeuk Kim 1902e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1903e05df3b1SJaegeuk Kim break; 1904e05df3b1SJaegeuk Kim } 1905e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1906e05df3b1SJaegeuk Kim cond_resched(); 1907e05df3b1SJaegeuk Kim 1908e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1909e05df3b1SJaegeuk Kim step = 2; 1910e05df3b1SJaegeuk Kim break; 1911e05df3b1SJaegeuk Kim } 1912e05df3b1SJaegeuk Kim } 1913e05df3b1SJaegeuk Kim 1914e05df3b1SJaegeuk Kim if (step < 2) { 1915100c0655SJaegeuk Kim if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && 1916100c0655SJaegeuk Kim wbc->sync_mode == WB_SYNC_NONE && step == 1) 1917fd8c8cafSChao Yu goto out; 1918e05df3b1SJaegeuk Kim step++; 1919e05df3b1SJaegeuk Kim goto next_step; 1920e05df3b1SJaegeuk Kim } 1921fd8c8cafSChao Yu out: 19223f5f4959SChao Yu if (nwritten) 1923b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1924db198ae0SChao Yu 1925db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1926db198ae0SChao Yu return -EIO; 19273f5f4959SChao Yu return ret; 1928e05df3b1SJaegeuk Kim } 1929e05df3b1SJaegeuk Kim 193050fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 193150fa53ecSChao Yu unsigned int seq_id) 1932cfe58f9dSJaegeuk Kim { 193350fa53ecSChao Yu struct fsync_node_entry *fn; 193450fa53ecSChao Yu struct page *page; 193550fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 193650fa53ecSChao Yu unsigned long flags; 193750fa53ecSChao Yu unsigned int cur_seq_id = 0; 1938280db3c8SMiklos Szeredi int ret2, ret = 0; 1939cfe58f9dSJaegeuk Kim 194050fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 194150fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 194250fa53ecSChao Yu if (list_empty(head)) { 194350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 194450fa53ecSChao Yu break; 194550fa53ecSChao Yu } 194650fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 194750fa53ecSChao Yu if (fn->seq_id > seq_id) { 194850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 194950fa53ecSChao Yu break; 195050fa53ecSChao Yu } 195150fa53ecSChao Yu cur_seq_id = fn->seq_id; 195250fa53ecSChao Yu page = fn->page; 195350fa53ecSChao Yu get_page(page); 195450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 19554ef51a8fSJaegeuk Kim 1956bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 1957cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1958cfe58f9dSJaegeuk Kim ret = -EIO; 195950fa53ecSChao Yu 196050fa53ecSChao Yu put_page(page); 196150fa53ecSChao Yu 196250fa53ecSChao Yu if (ret) 196350fa53ecSChao Yu break; 1964cfe58f9dSJaegeuk Kim } 1965cfe58f9dSJaegeuk Kim 1966280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1967cfe58f9dSJaegeuk Kim if (!ret) 1968cfe58f9dSJaegeuk Kim ret = ret2; 196950fa53ecSChao Yu 1970cfe58f9dSJaegeuk Kim return ret; 1971cfe58f9dSJaegeuk Kim } 1972cfe58f9dSJaegeuk Kim 1973e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1974e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1975e05df3b1SJaegeuk Kim { 19764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 19779dfa1bafSJaegeuk Kim struct blk_plug plug; 197850c8cdb3SJaegeuk Kim long diff; 1979e05df3b1SJaegeuk Kim 19800771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 19810771fcc7SChao Yu goto skip_write; 19820771fcc7SChao Yu 19834660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 19844660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1985e05df3b1SJaegeuk Kim 1986a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 1987812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 1988812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 1989812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 1990d3baf95dSJaegeuk Kim goto skip_write; 1991a7fdffbdSJaegeuk Kim 1992c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1993c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1994c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1995c29fd0c0SChao Yu goto skip_write; 1996c29fd0c0SChao Yu 1997d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1998d31c7c3fSYunlei He 199950c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 20009dfa1bafSJaegeuk Kim blk_start_plug(&plug); 20014d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 20029dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 200350c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 2004c29fd0c0SChao Yu 2005c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 2006c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 2007e05df3b1SJaegeuk Kim return 0; 2008d3baf95dSJaegeuk Kim 2009d3baf95dSJaegeuk Kim skip_write: 2010d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 2011d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 2012d3baf95dSJaegeuk Kim return 0; 2013e05df3b1SJaegeuk Kim } 2014e05df3b1SJaegeuk Kim 2015e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 2016e05df3b1SJaegeuk Kim { 201726c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 201826c6b887SJaegeuk Kim 2019237c0790SJaegeuk Kim if (!PageUptodate(page)) 2020e05df3b1SJaegeuk Kim SetPageUptodate(page); 202154c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 202254c55c4eSWeichao Guo if (IS_INODE(page)) 202354c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 202454c55c4eSWeichao Guo #endif 2025e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 2026b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 20274081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 2028240a5915SChao Yu f2fs_set_page_private(page, 0); 20299e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 2030e05df3b1SJaegeuk Kim return 1; 2031e05df3b1SJaegeuk Kim } 2032e05df3b1SJaegeuk Kim return 0; 2033e05df3b1SJaegeuk Kim } 2034e05df3b1SJaegeuk Kim 20350a8165d7SJaegeuk Kim /* 2036e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 2037e05df3b1SJaegeuk Kim */ 2038e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 2039e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 2040e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 2041e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 2042487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 2043487261f3SChao Yu .releasepage = f2fs_release_page, 20445b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 20455b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 20465b7a487cSWeichao Guo #endif 2047e05df3b1SJaegeuk Kim }; 2048e05df3b1SJaegeuk Kim 20498a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 20508a7ed66aSJaegeuk Kim nid_t n) 2051e05df3b1SJaegeuk Kim { 20528a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 20533aa770a9SNamjae Jeon } 2054e05df3b1SJaegeuk Kim 20559a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2056a0761f63SFan Li struct free_nid *i, enum nid_state state) 2057e05df3b1SJaegeuk Kim { 2058b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2059b8559dc2SChao Yu 2060eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 2061eb0aa4b8SJaegeuk Kim if (err) 2062eb0aa4b8SJaegeuk Kim return err; 2063eb0aa4b8SJaegeuk Kim 20649a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20659a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 20669a4ffdf5SChao Yu if (state == FREE_NID) 20679a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2068eb0aa4b8SJaegeuk Kim return 0; 2069b8559dc2SChao Yu } 2070b8559dc2SChao Yu 20719a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2072a0761f63SFan Li struct free_nid *i, enum nid_state state) 2073b8559dc2SChao Yu { 2074b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2075b8559dc2SChao Yu 20769a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20779a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 20789a4ffdf5SChao Yu if (state == FREE_NID) 2079e05df3b1SJaegeuk Kim list_del(&i->list); 20808a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2081e05df3b1SJaegeuk Kim } 2082e05df3b1SJaegeuk Kim 2083a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2084a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2085a0761f63SFan Li { 2086a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2087a0761f63SFan Li 2088a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2089a0761f63SFan Li i->state = dst_state; 2090a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2091a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2092a0761f63SFan Li 2093a0761f63SFan Li switch (dst_state) { 2094a0761f63SFan Li case PREALLOC_NID: 2095a0761f63SFan Li list_del(&i->list); 2096a0761f63SFan Li break; 2097a0761f63SFan Li case FREE_NID: 2098a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2099a0761f63SFan Li break; 2100a0761f63SFan Li default: 2101a0761f63SFan Li BUG_ON(1); 2102a0761f63SFan Li } 2103a0761f63SFan Li } 2104a0761f63SFan Li 21055921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 21065921aaa1SLiFan bool set, bool build) 21075921aaa1SLiFan { 21085921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 21095921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 21105921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 21115921aaa1SLiFan 21125921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 21135921aaa1SLiFan return; 21145921aaa1SLiFan 21155921aaa1SLiFan if (set) { 21165921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 21175921aaa1SLiFan return; 21185921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 21195921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 21205921aaa1SLiFan } else { 21215921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 21225921aaa1SLiFan return; 21235921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 21245921aaa1SLiFan if (!build) 21255921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 21265921aaa1SLiFan } 21275921aaa1SLiFan } 21285921aaa1SLiFan 21294ac91242SChao Yu /* return if the nid is recognized as free */ 21305921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 21315921aaa1SLiFan nid_t nid, bool build, bool update) 2132e05df3b1SJaegeuk Kim { 21336fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 213430a61ddfSChao Yu struct free_nid *i, *e; 213559bbd474SJaegeuk Kim struct nat_entry *ne; 213630a61ddfSChao Yu int err = -EINVAL; 213730a61ddfSChao Yu bool ret = false; 21389198acebSJaegeuk Kim 21399198acebSJaegeuk Kim /* 0 nid should not be used */ 2140cfb271d4SChao Yu if (unlikely(nid == 0)) 21414ac91242SChao Yu return false; 214259bbd474SJaegeuk Kim 2143626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2144626bcf2bSChao Yu return false; 2145626bcf2bSChao Yu 21467bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 2147e05df3b1SJaegeuk Kim i->nid = nid; 21489a4ffdf5SChao Yu i->state = FREE_NID; 2149e05df3b1SJaegeuk Kim 21505921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2151769ec6e5SJaegeuk Kim 2152b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 215330a61ddfSChao Yu 215430a61ddfSChao Yu if (build) { 215530a61ddfSChao Yu /* 215630a61ddfSChao Yu * Thread A Thread B 215730a61ddfSChao Yu * - f2fs_create 215830a61ddfSChao Yu * - f2fs_new_inode 21594d57b86dSChao Yu * - f2fs_alloc_nid 21609a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 216130a61ddfSChao Yu * - f2fs_balance_fs_bg 21624d57b86dSChao Yu * - f2fs_build_free_nids 21634d57b86dSChao Yu * - __f2fs_build_free_nids 216430a61ddfSChao Yu * - scan_nat_page 216530a61ddfSChao Yu * - add_free_nid 216630a61ddfSChao Yu * - __lookup_nat_cache 216730a61ddfSChao Yu * - f2fs_add_link 21684d57b86dSChao Yu * - f2fs_init_inode_metadata 21694d57b86dSChao Yu * - f2fs_new_inode_page 21704d57b86dSChao Yu * - f2fs_new_node_page 217130a61ddfSChao Yu * - set_node_addr 21724d57b86dSChao Yu * - f2fs_alloc_nid_done 21739a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 21749a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 217530a61ddfSChao Yu */ 217630a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 217730a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 217830a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 217930a61ddfSChao Yu goto err_out; 218030a61ddfSChao Yu 218130a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 218230a61ddfSChao Yu if (e) { 21839a4ffdf5SChao Yu if (e->state == FREE_NID) 218430a61ddfSChao Yu ret = true; 218530a61ddfSChao Yu goto err_out; 218630a61ddfSChao Yu } 218730a61ddfSChao Yu } 218830a61ddfSChao Yu ret = true; 2189a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 219030a61ddfSChao Yu err_out: 21915921aaa1SLiFan if (update) { 21925921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 21935921aaa1SLiFan if (!build) 21945921aaa1SLiFan nm_i->available_nids++; 21955921aaa1SLiFan } 2196b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2197769ec6e5SJaegeuk Kim radix_tree_preload_end(); 21985921aaa1SLiFan 219930a61ddfSChao Yu if (err) 2200e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 220130a61ddfSChao Yu return ret; 2202e05df3b1SJaegeuk Kim } 2203e05df3b1SJaegeuk Kim 2204b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2205e05df3b1SJaegeuk Kim { 2206b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2207e05df3b1SJaegeuk Kim struct free_nid *i; 2208cf0ee0f0SChao Yu bool need_free = false; 2209cf0ee0f0SChao Yu 2210b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22118a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 22129a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2213a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2214cf0ee0f0SChao Yu need_free = true; 2215e05df3b1SJaegeuk Kim } 2216b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2217cf0ee0f0SChao Yu 2218cf0ee0f0SChao Yu if (need_free) 2219cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2220e05df3b1SJaegeuk Kim } 2221e05df3b1SJaegeuk Kim 2222e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2223e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2224e05df3b1SJaegeuk Kim { 22256fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2226e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2227e05df3b1SJaegeuk Kim block_t blk_addr; 22284ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2229e05df3b1SJaegeuk Kim int i; 2230e05df3b1SJaegeuk Kim 223123380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 22324ac91242SChao Yu 2233e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2234e05df3b1SJaegeuk Kim 2235e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2236cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 223704431c44SJaegeuk Kim break; 223823d38844SHaicheng Li 2239e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2240e2374015SChao Yu 2241e2374015SChao Yu if (blk_addr == NEW_ADDR) 2242e2374015SChao Yu return -EINVAL; 2243e2374015SChao Yu 22445921aaa1SLiFan if (blk_addr == NULL_ADDR) { 22455921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 22465921aaa1SLiFan } else { 2247346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 22485921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2249346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2250e05df3b1SJaegeuk Kim } 2251e05df3b1SJaegeuk Kim } 2252e2374015SChao Yu 2253e2374015SChao Yu return 0; 22545921aaa1SLiFan } 2255e05df3b1SJaegeuk Kim 22562fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 22574ac91242SChao Yu { 22584ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 22594ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 22602fbaa25fSChao Yu int i; 22614ac91242SChao Yu 22624ac91242SChao Yu down_read(&curseg->journal_rwsem); 22634ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 22644ac91242SChao Yu block_t addr; 22654ac91242SChao Yu nid_t nid; 22664ac91242SChao Yu 22674ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 22684ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 22694ac91242SChao Yu if (addr == NULL_ADDR) 22705921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22714ac91242SChao Yu else 22724ac91242SChao Yu remove_free_nid(sbi, nid); 22734ac91242SChao Yu } 22744ac91242SChao Yu up_read(&curseg->journal_rwsem); 22752fbaa25fSChao Yu } 22762fbaa25fSChao Yu 2277e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 22784ac91242SChao Yu { 22794ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 22804ac91242SChao Yu unsigned int i, idx; 228197456574SFan Li nid_t nid; 22824ac91242SChao Yu 22834ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 22844ac91242SChao Yu 22854ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 22864ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 22874ac91242SChao Yu continue; 22884ac91242SChao Yu if (!nm_i->free_nid_count[i]) 22894ac91242SChao Yu continue; 22904ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 229197456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 229297456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 229397456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 229497456574SFan Li break; 22954ac91242SChao Yu 22964ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 22975921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22984ac91242SChao Yu 22999a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 23004ac91242SChao Yu goto out; 23014ac91242SChao Yu } 23024ac91242SChao Yu } 23034ac91242SChao Yu out: 23042fbaa25fSChao Yu scan_curseg_cache(sbi); 23054ac91242SChao Yu 23064ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 23074ac91242SChao Yu } 23084ac91242SChao Yu 2309e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 23104d57b86dSChao Yu bool sync, bool mount) 2311e05df3b1SJaegeuk Kim { 2312e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2313e2374015SChao Yu int i = 0, ret; 231455008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2315e05df3b1SJaegeuk Kim 2316e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2317e9cdd307SYunlei He nid = 0; 2318e9cdd307SYunlei He 231955008d84SJaegeuk Kim /* Enough entries */ 23209a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2321e2374015SChao Yu return 0; 2322e05df3b1SJaegeuk Kim 23234d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2324e2374015SChao Yu return 0; 2325e05df3b1SJaegeuk Kim 23264ac91242SChao Yu if (!mount) { 23274ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 23284ac91242SChao Yu scan_free_nid_bits(sbi); 23294ac91242SChao Yu 233074986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2331e2374015SChao Yu return 0; 233222ad0b6aSJaegeuk Kim } 233322ad0b6aSJaegeuk Kim 233455008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 23354d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 233626879fb1SChao Yu META_NAT, true); 2337e05df3b1SJaegeuk Kim 2338b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2339a5131193SJaegeuk Kim 2340e05df3b1SJaegeuk Kim while (1) { 234166e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 234266e83361SYunlei He nm_i->nat_block_bitmap)) { 2343e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2344e05df3b1SJaegeuk Kim 2345edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2346edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2347edc55aafSJaegeuk Kim } else { 2348e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2349e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2350edc55aafSJaegeuk Kim } 2351e2374015SChao Yu 2352e2374015SChao Yu if (ret) { 2353e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2354dcbb4c10SJoe Perches f2fs_err(sbi, "NAT is corrupt, run fsck to fix it"); 2355edc55aafSJaegeuk Kim return ret; 2356e2374015SChao Yu } 235766e83361SYunlei He } 2358e05df3b1SJaegeuk Kim 2359e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2360cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2361e05df3b1SJaegeuk Kim nid = 0; 236255008d84SJaegeuk Kim 2363a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2364e05df3b1SJaegeuk Kim break; 2365e05df3b1SJaegeuk Kim } 2366e05df3b1SJaegeuk Kim 236755008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 236855008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2369e05df3b1SJaegeuk Kim 2370e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 23712fbaa25fSChao Yu scan_curseg_cache(sbi); 2372dfc08a12SChao Yu 2373b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23742db2388fSChao Yu 23754d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2376ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2377e2374015SChao Yu 2378e2374015SChao Yu return 0; 2379e05df3b1SJaegeuk Kim } 2380e05df3b1SJaegeuk Kim 2381e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 23822411cf5bSChao Yu { 2383e2374015SChao Yu int ret; 2384e2374015SChao Yu 23852411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2386e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 23872411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2388e2374015SChao Yu 2389e2374015SChao Yu return ret; 23902411cf5bSChao Yu } 23912411cf5bSChao Yu 2392e05df3b1SJaegeuk Kim /* 2393e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2394e05df3b1SJaegeuk Kim * from second parameter of this function. 2395e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2396e05df3b1SJaegeuk Kim */ 23974d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2398e05df3b1SJaegeuk Kim { 2399e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2400e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2401e05df3b1SJaegeuk Kim retry: 240255523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 2403c45d6002SChao Yu f2fs_show_injection_info(sbi, FAULT_ALLOC_NID); 2404cb78942bSJaegeuk Kim return false; 240555523519SChao Yu } 24067fa750a1SArnd Bergmann 2407b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2408e05df3b1SJaegeuk Kim 240904d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 241004d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 241104d47e67SChao Yu return false; 241204d47e67SChao Yu } 2413e05df3b1SJaegeuk Kim 24144d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 24154d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 24169a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 24179a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2418b8559dc2SChao Yu struct free_nid, list); 2419e05df3b1SJaegeuk Kim *nid = i->nid; 2420b8559dc2SChao Yu 2421a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 242204d47e67SChao Yu nm_i->available_nids--; 24234ac91242SChao Yu 2424346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 24254ac91242SChao Yu 2426b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2427e05df3b1SJaegeuk Kim return true; 2428e05df3b1SJaegeuk Kim } 2429b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 243055008d84SJaegeuk Kim 243155008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2432f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 243355008d84SJaegeuk Kim goto retry; 2434f84262b0SJaegeuk Kim return false; 243555008d84SJaegeuk Kim } 2436e05df3b1SJaegeuk Kim 24370a8165d7SJaegeuk Kim /* 24384d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2439e05df3b1SJaegeuk Kim */ 24404d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2441e05df3b1SJaegeuk Kim { 2442e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2443e05df3b1SJaegeuk Kim struct free_nid *i; 2444e05df3b1SJaegeuk Kim 2445b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24468a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2447b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2448a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2449b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2450cf0ee0f0SChao Yu 2451cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2452e05df3b1SJaegeuk Kim } 2453e05df3b1SJaegeuk Kim 24540a8165d7SJaegeuk Kim /* 24554d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2456e05df3b1SJaegeuk Kim */ 24574d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2458e05df3b1SJaegeuk Kim { 245949952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 246049952fa1SJaegeuk Kim struct free_nid *i; 2461cf0ee0f0SChao Yu bool need_free = false; 246249952fa1SJaegeuk Kim 246365985d93SJaegeuk Kim if (!nid) 246465985d93SJaegeuk Kim return; 246565985d93SJaegeuk Kim 2466b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24678a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2468b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2469b8559dc2SChao Yu 24704d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2471a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2472cf0ee0f0SChao Yu need_free = true; 247395630cbaSHaicheng Li } else { 2474a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 247595630cbaSHaicheng Li } 247604d47e67SChao Yu 247704d47e67SChao Yu nm_i->available_nids++; 247804d47e67SChao Yu 2479346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 24804ac91242SChao Yu 2481b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2482cf0ee0f0SChao Yu 2483cf0ee0f0SChao Yu if (need_free) 2484cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2485e05df3b1SJaegeuk Kim } 2486e05df3b1SJaegeuk Kim 24874d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 248831696580SChao Yu { 248931696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 249031696580SChao Yu struct free_nid *i, *next; 249131696580SChao Yu int nr = nr_shrink; 249231696580SChao Yu 24939a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2494ad4edb83SJaegeuk Kim return 0; 2495ad4edb83SJaegeuk Kim 249631696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 249731696580SChao Yu return 0; 249831696580SChao Yu 2499b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 25009a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2501b8559dc2SChao Yu if (nr_shrink <= 0 || 25029a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 250331696580SChao Yu break; 2504b8559dc2SChao Yu 2505a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 250631696580SChao Yu kmem_cache_free(free_nid_slab, i); 250731696580SChao Yu nr_shrink--; 250831696580SChao Yu } 2509b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 251031696580SChao Yu mutex_unlock(&nm_i->build_lock); 251131696580SChao Yu 251231696580SChao Yu return nr - nr_shrink; 251331696580SChao Yu } 251431696580SChao Yu 25154d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 251628cdce04SChao Yu { 251728cdce04SChao Yu void *src_addr, *dst_addr; 251828cdce04SChao Yu size_t inline_size; 251928cdce04SChao Yu struct page *ipage; 252028cdce04SChao Yu struct f2fs_inode *ri; 252128cdce04SChao Yu 25224d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 25239850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 252428cdce04SChao Yu 2525e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 25261eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 25271eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 25281eca05aaSYunlei He } else { 252991942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2530e3b4d43fSJaegeuk Kim goto update_inode; 2531e3b4d43fSJaegeuk Kim } 2532e3b4d43fSJaegeuk Kim 25336afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 25346afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 253528cdce04SChao Yu inline_size = inline_xattr_size(inode); 253628cdce04SChao Yu 2537bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 253828cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2539e3b4d43fSJaegeuk Kim update_inode: 25404d57b86dSChao Yu f2fs_update_inode(inode, ipage); 254128cdce04SChao Yu f2fs_put_page(ipage, 1); 254228cdce04SChao Yu } 254328cdce04SChao Yu 25444d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2545abb2366cSJaegeuk Kim { 25464081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2547abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 254887905682SYunlei He nid_t new_xnid; 254987905682SYunlei He struct dnode_of_data dn; 2550abb2366cSJaegeuk Kim struct node_info ni; 2551d260081cSChao Yu struct page *xpage; 25527735730dSChao Yu int err; 2553abb2366cSJaegeuk Kim 2554abb2366cSJaegeuk Kim if (!prev_xnid) 2555abb2366cSJaegeuk Kim goto recover_xnid; 2556abb2366cSJaegeuk Kim 2557d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 25587735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 25597735730dSChao Yu if (err) 25607735730dSChao Yu return err; 25617735730dSChao Yu 25624d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2563000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2564479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2565abb2366cSJaegeuk Kim 2566abb2366cSJaegeuk Kim recover_xnid: 2567d260081cSChao Yu /* 2: update xattr nid in inode */ 25684d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 256987905682SYunlei He return -ENOSPC; 257087905682SYunlei He 257187905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 25724d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 257387905682SYunlei He if (IS_ERR(xpage)) { 25744d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 257587905682SYunlei He return PTR_ERR(xpage); 257687905682SYunlei He } 257787905682SYunlei He 25784d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 25794d57b86dSChao Yu f2fs_update_inode_page(inode); 2580abb2366cSJaegeuk Kim 2581d260081cSChao Yu /* 3: update and set xattr node page dirty */ 258287905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2583d260081cSChao Yu 2584d260081cSChao Yu set_page_dirty(xpage); 2585d260081cSChao Yu f2fs_put_page(xpage, 1); 2586abb2366cSJaegeuk Kim 2587d260081cSChao Yu return 0; 2588abb2366cSJaegeuk Kim } 2589abb2366cSJaegeuk Kim 25904d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2591e05df3b1SJaegeuk Kim { 259258bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2593e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2594e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2595e05df3b1SJaegeuk Kim struct page *ipage; 25967735730dSChao Yu int err; 2597e05df3b1SJaegeuk Kim 25987735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 25997735730dSChao Yu if (err) 26007735730dSChao Yu return err; 2601e8271fa3SJaegeuk Kim 2602e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2603e8271fa3SJaegeuk Kim return -EINVAL; 2604e8ea9b3dSJaegeuk Kim retry: 2605300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2606e8ea9b3dSJaegeuk Kim if (!ipage) { 2607e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2608e8ea9b3dSJaegeuk Kim goto retry; 2609e8ea9b3dSJaegeuk Kim } 2610e05df3b1SJaegeuk Kim 2611e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2612b8559dc2SChao Yu remove_free_nid(sbi, ino); 2613e05df3b1SJaegeuk Kim 2614237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2615e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2616e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2617ef2a0071SChao Yu set_cold_node(ipage, false); 2618e05df3b1SJaegeuk Kim 261958bfaf44SJaegeuk Kim src = F2FS_INODE(page); 262058bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2621e05df3b1SJaegeuk Kim 262258bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 262358bfaf44SJaegeuk Kim dst->i_size = 0; 262458bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 262558bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 262658bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 26277a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 26285c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 26297a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 26306afc662eSChao Yu 26317beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 26326afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 26336afc662eSChao Yu i_inline_xattr_size)) 26346afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 26356afc662eSChao Yu 26367beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 26375c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 26385c57132eSChao Yu i_projid)) 26395c57132eSChao Yu dst->i_projid = src->i_projid; 26405cd1f387SChao Yu 26417beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 26425cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 26435cd1f387SChao Yu i_crtime_nsec)) { 26445cd1f387SChao Yu dst->i_crtime = src->i_crtime; 26455cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 26465cd1f387SChao Yu } 26475c57132eSChao Yu } 2648e05df3b1SJaegeuk Kim 2649e05df3b1SJaegeuk Kim new_ni = old_ni; 2650e05df3b1SJaegeuk Kim new_ni.ino = ino; 2651e05df3b1SJaegeuk Kim 26520abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 265365e5cd0aSJaegeuk Kim WARN_ON(1); 2654479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2655e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2656617deb8cSJaegeuk Kim set_page_dirty(ipage); 2657e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2658e05df3b1SJaegeuk Kim return 0; 2659e05df3b1SJaegeuk Kim } 2660e05df3b1SJaegeuk Kim 26617735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2662e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2663e05df3b1SJaegeuk Kim { 2664e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2665e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2666e05df3b1SJaegeuk Kim block_t addr; 26679ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2668e05df3b1SJaegeuk Kim 2669e05df3b1SJaegeuk Kim /* scan the node segment */ 2670e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2671e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2672e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2673e05df3b1SJaegeuk Kim 26749ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2675664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2676393ff91fSJaegeuk Kim 26779af0ff1cSChao Yu /* readahead node pages */ 26784d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 26799af0ff1cSChao Yu 26809ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 26814d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2682393ff91fSJaegeuk Kim 26837735730dSChao Yu if (IS_ERR(page)) 26847735730dSChao Yu return PTR_ERR(page); 26857735730dSChao Yu 26869ecf4b80SChao Yu rn = F2FS_NODE(page); 2687393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2688393ff91fSJaegeuk Kim sum_entry->version = 0; 2689393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 26909af0ff1cSChao Yu sum_entry++; 26919ecf4b80SChao Yu f2fs_put_page(page, 1); 26929af0ff1cSChao Yu } 2693bac4eef6SChao Yu 26949ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2695bac4eef6SChao Yu addr + nrpages); 26969af0ff1cSChao Yu } 26977735730dSChao Yu return 0; 2698e05df3b1SJaegeuk Kim } 2699e05df3b1SJaegeuk Kim 2700aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2701e05df3b1SJaegeuk Kim { 2702e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2703e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2704b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2705e05df3b1SJaegeuk Kim int i; 2706e05df3b1SJaegeuk Kim 2707b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2708dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2709e05df3b1SJaegeuk Kim struct nat_entry *ne; 2710e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2711dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2712e05df3b1SJaegeuk Kim 2713dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 27149be32d72SJaegeuk Kim 2715e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2716e05df3b1SJaegeuk Kim if (!ne) { 271712f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 271812f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 27199be32d72SJaegeuk Kim } 272004d47e67SChao Yu 272104d47e67SChao Yu /* 272204d47e67SChao Yu * if a free nat in journal has not been used after last 272304d47e67SChao Yu * checkpoint, we should remove it from available nids, 272404d47e67SChao Yu * since later we will add it again. 272504d47e67SChao Yu */ 272604d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 272704d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 272804d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 272904d47e67SChao Yu nm_i->available_nids--; 273004d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 273104d47e67SChao Yu } 273204d47e67SChao Yu 2733e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2734e05df3b1SJaegeuk Kim } 2735dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2736b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2737e05df3b1SJaegeuk Kim } 2738e05df3b1SJaegeuk Kim 2739309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2740309cc2b6SJaegeuk Kim struct list_head *head, int max) 2741e05df3b1SJaegeuk Kim { 2742309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2743e05df3b1SJaegeuk Kim 2744309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2745309cc2b6SJaegeuk Kim goto add_out; 2746e05df3b1SJaegeuk Kim 2747309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2748309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2749309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2750309cc2b6SJaegeuk Kim return; 2751309cc2b6SJaegeuk Kim } 2752309cc2b6SJaegeuk Kim } 2753309cc2b6SJaegeuk Kim add_out: 2754309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2755aec71382SChao Yu } 2756aec71382SChao Yu 27579f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 275822ad0b6aSJaegeuk Kim struct page *page) 275922ad0b6aSJaegeuk Kim { 276022ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 276122ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 276222ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 276322ad0b6aSJaegeuk Kim int valid = 0; 276437a0ab2aSFan Li int i = 0; 276522ad0b6aSJaegeuk Kim 276622ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 276722ad0b6aSJaegeuk Kim return; 276822ad0b6aSJaegeuk Kim 276937a0ab2aSFan Li if (nat_index == 0) { 277037a0ab2aSFan Li valid = 1; 277137a0ab2aSFan Li i = 1; 277237a0ab2aSFan Li } 277337a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 277436af5f40SChao Yu if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR) 277522ad0b6aSJaegeuk Kim valid++; 277622ad0b6aSJaegeuk Kim } 277722ad0b6aSJaegeuk Kim if (valid == 0) { 277823380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 277923380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 278022ad0b6aSJaegeuk Kim return; 278122ad0b6aSJaegeuk Kim } 278222ad0b6aSJaegeuk Kim 278323380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 278422ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 278523380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 278622ad0b6aSJaegeuk Kim else 278723380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 278822ad0b6aSJaegeuk Kim } 278922ad0b6aSJaegeuk Kim 2790edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 279122ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2792309cc2b6SJaegeuk Kim { 2793309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2794b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2795309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2796309cc2b6SJaegeuk Kim bool to_journal = true; 2797309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2798309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2799309cc2b6SJaegeuk Kim struct page *page = NULL; 2800aec71382SChao Yu 2801aec71382SChao Yu /* 2802aec71382SChao Yu * there are two steps to flush nat entries: 2803aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2804aec71382SChao Yu * #2, flush nat entries to nat page. 2805aec71382SChao Yu */ 280622ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 280722ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2808aec71382SChao Yu to_journal = false; 2809aec71382SChao Yu 2810aec71382SChao Yu if (to_journal) { 2811b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2812aec71382SChao Yu } else { 2813e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2814edc55aafSJaegeuk Kim if (IS_ERR(page)) 2815edc55aafSJaegeuk Kim return PTR_ERR(page); 2816edc55aafSJaegeuk Kim 2817e05df3b1SJaegeuk Kim nat_blk = page_address(page); 28189850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2819e05df3b1SJaegeuk Kim } 2820e05df3b1SJaegeuk Kim 2821aec71382SChao Yu /* flush dirty nats in nat entry set */ 2822309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2823aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2824aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2825aec71382SChao Yu int offset; 2826aec71382SChao Yu 2827febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2828309cc2b6SJaegeuk Kim 2829aec71382SChao Yu if (to_journal) { 28304d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2831aec71382SChao Yu NAT_JOURNAL, nid, 1); 28329850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2833dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2834dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2835aec71382SChao Yu } else { 2836aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2837aec71382SChao Yu } 2838aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 283988bd02c9SJaegeuk Kim nat_reset_flag(ne); 28400b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 284104d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 28425921aaa1SLiFan add_free_nid(sbi, nid, false, true); 28434ac91242SChao Yu } else { 28444ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2845346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 284604d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 284704d47e67SChao Yu } 2848e05df3b1SJaegeuk Kim } 2849aec71382SChao Yu 285022ad0b6aSJaegeuk Kim if (to_journal) { 2851b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 285222ad0b6aSJaegeuk Kim } else { 285322ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2854e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 285522ad0b6aSJaegeuk Kim } 2856aec71382SChao Yu 285759c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 285859c9081bSYunlei He if (!set->entry_cnt) { 2859309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2860309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2861309cc2b6SJaegeuk Kim } 2862edc55aafSJaegeuk Kim return 0; 286359c9081bSYunlei He } 2864aec71382SChao Yu 2865309cc2b6SJaegeuk Kim /* 2866309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2867309cc2b6SJaegeuk Kim */ 2868edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2869309cc2b6SJaegeuk Kim { 2870309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2871309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2872b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 28737aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2874309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2875309cc2b6SJaegeuk Kim unsigned int found; 2876309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2877309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2878edc55aafSJaegeuk Kim int err = 0; 2879309cc2b6SJaegeuk Kim 28807f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 28817f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 28827f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 28837f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 28847f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 28857f2ecdd8SJaegeuk Kim } 28867f2ecdd8SJaegeuk Kim 288720d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 2888edc55aafSJaegeuk Kim return 0; 2889a5131193SJaegeuk Kim 2890b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2891a5131193SJaegeuk Kim 2892309cc2b6SJaegeuk Kim /* 2893309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2894309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2895309cc2b6SJaegeuk Kim * into nat entry set. 2896309cc2b6SJaegeuk Kim */ 2897900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 289822ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2899309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2900309cc2b6SJaegeuk Kim 2901309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 29027aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2903309cc2b6SJaegeuk Kim unsigned idx; 2904309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2905309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2906309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2907dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2908309cc2b6SJaegeuk Kim } 2909309cc2b6SJaegeuk Kim 2910309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2911edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 2912edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 2913edc55aafSJaegeuk Kim if (err) 2914edc55aafSJaegeuk Kim break; 2915edc55aafSJaegeuk Kim } 2916309cc2b6SJaegeuk Kim 2917b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 291859c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2919edc55aafSJaegeuk Kim 2920edc55aafSJaegeuk Kim return err; 2921e05df3b1SJaegeuk Kim } 2922e05df3b1SJaegeuk Kim 292322ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 292422ad0b6aSJaegeuk Kim { 292522ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 292622ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 292722ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 292822ad0b6aSJaegeuk Kim unsigned int i; 292922ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 293022ad0b6aSJaegeuk Kim block_t nat_bits_addr; 293122ad0b6aSJaegeuk Kim 293222ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 293322ad0b6aSJaegeuk Kim return 0; 293422ad0b6aSJaegeuk Kim 2935df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2936acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2937acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 293822ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 293922ad0b6aSJaegeuk Kim return -ENOMEM; 294022ad0b6aSJaegeuk Kim 294122ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 294222ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 294322ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 29447735730dSChao Yu struct page *page; 29457735730dSChao Yu 29467735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 29473b30eb19SChao Yu if (IS_ERR(page)) 29487735730dSChao Yu return PTR_ERR(page); 294922ad0b6aSJaegeuk Kim 295022ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 295122ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 295222ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 295322ad0b6aSJaegeuk Kim } 295422ad0b6aSJaegeuk Kim 2955ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 295622ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 295722ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 295822ad0b6aSJaegeuk Kim return 0; 295922ad0b6aSJaegeuk Kim } 296022ad0b6aSJaegeuk Kim 296122ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 296222ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 296322ad0b6aSJaegeuk Kim 2964dcbb4c10SJoe Perches f2fs_notice(sbi, "Found nat_bits in checkpoint"); 296522ad0b6aSJaegeuk Kim return 0; 296622ad0b6aSJaegeuk Kim } 296722ad0b6aSJaegeuk Kim 2968bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 29697041d5d2SChao Yu { 29707041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 29717041d5d2SChao Yu unsigned int i = 0; 29727041d5d2SChao Yu nid_t nid, last_nid; 29737041d5d2SChao Yu 29747041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 29757041d5d2SChao Yu return; 29767041d5d2SChao Yu 29777041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29787041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 29797041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29807041d5d2SChao Yu break; 29817041d5d2SChao Yu 29827041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29837041d5d2SChao Yu 29847041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2985f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 29867041d5d2SChao Yu 2987346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 29887041d5d2SChao Yu for (; nid < last_nid; nid++) 2989346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2990346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 29917041d5d2SChao Yu } 29927041d5d2SChao Yu 29937041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29947041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 29957041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29967041d5d2SChao Yu break; 29977041d5d2SChao Yu 29987041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29997041d5d2SChao Yu } 30007041d5d2SChao Yu } 30017041d5d2SChao Yu 3002e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 3003e05df3b1SJaegeuk Kim { 3004e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 3005e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3006e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 300722ad0b6aSJaegeuk Kim unsigned int nat_segs; 300822ad0b6aSJaegeuk Kim int err; 3009e05df3b1SJaegeuk Kim 3010e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 3011e05df3b1SJaegeuk Kim 3012e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 3013e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 301422ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 301522ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 30167ee0eeabSJaegeuk Kim 3017b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 301804d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 301927cae0bcSChao Yu F2FS_RESERVED_NODE_NUM; 30209a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 30219a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 3022e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 3023cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 3024ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 30252304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 3026e05df3b1SJaegeuk Kim 30278a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 30289a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 3029769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 3030769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 3031e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 303222969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 3033e05df3b1SJaegeuk Kim 3034e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 3035b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 3036b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 3037e05df3b1SJaegeuk Kim 3038e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 303979b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 3040e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 3041e05df3b1SJaegeuk Kim if (!version_bitmap) 3042e05df3b1SJaegeuk Kim return -EFAULT; 3043e05df3b1SJaegeuk Kim 304479b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 304579b5793bSAlexandru Gheorghiu GFP_KERNEL); 304679b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 304779b5793bSAlexandru Gheorghiu return -ENOMEM; 3048599a09b2SChao Yu 304922ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 305022ad0b6aSJaegeuk Kim if (err) 305122ad0b6aSJaegeuk Kim return err; 305222ad0b6aSJaegeuk Kim 3053599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3054599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3055599a09b2SChao Yu GFP_KERNEL); 3056599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3057599a09b2SChao Yu return -ENOMEM; 3058599a09b2SChao Yu #endif 3059599a09b2SChao Yu 3060e05df3b1SJaegeuk Kim return 0; 3061e05df3b1SJaegeuk Kim } 3062e05df3b1SJaegeuk Kim 30639f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 30644ac91242SChao Yu { 30654ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3066bb1105e4SJaegeuk Kim int i; 30674ac91242SChao Yu 3068026f0507SKees Cook nm_i->free_nid_bitmap = 3069026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 3070026f0507SKees Cook nm_i->nat_blocks), 3071026f0507SKees Cook GFP_KERNEL); 30724ac91242SChao Yu if (!nm_i->free_nid_bitmap) 30734ac91242SChao Yu return -ENOMEM; 30744ac91242SChao Yu 3075bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3076bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3077e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 307868c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3079bb1105e4SJaegeuk Kim return -ENOMEM; 3080bb1105e4SJaegeuk Kim } 3081bb1105e4SJaegeuk Kim 3082628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 30834ac91242SChao Yu GFP_KERNEL); 30844ac91242SChao Yu if (!nm_i->nat_block_bitmap) 30854ac91242SChao Yu return -ENOMEM; 3086586d1492SChao Yu 30879d2a789cSKees Cook nm_i->free_nid_count = 30889d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 30899d2a789cSKees Cook nm_i->nat_blocks), 30909d2a789cSKees Cook GFP_KERNEL); 3091586d1492SChao Yu if (!nm_i->free_nid_count) 3092586d1492SChao Yu return -ENOMEM; 30934ac91242SChao Yu return 0; 30944ac91242SChao Yu } 30954ac91242SChao Yu 30964d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3097e05df3b1SJaegeuk Kim { 3098e05df3b1SJaegeuk Kim int err; 3099e05df3b1SJaegeuk Kim 3100acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3101acbf054dSChao Yu GFP_KERNEL); 3102e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3103e05df3b1SJaegeuk Kim return -ENOMEM; 3104e05df3b1SJaegeuk Kim 3105e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3106e05df3b1SJaegeuk Kim if (err) 3107e05df3b1SJaegeuk Kim return err; 3108e05df3b1SJaegeuk Kim 31094ac91242SChao Yu err = init_free_nid_cache(sbi); 31104ac91242SChao Yu if (err) 31114ac91242SChao Yu return err; 31124ac91242SChao Yu 31137041d5d2SChao Yu /* load free nid status from nat_bits table */ 31147041d5d2SChao Yu load_free_nid_bitmap(sbi); 31157041d5d2SChao Yu 3116e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3117e05df3b1SJaegeuk Kim } 3118e05df3b1SJaegeuk Kim 31194d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3120e05df3b1SJaegeuk Kim { 3121e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3122e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3123e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 31247aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3125e05df3b1SJaegeuk Kim nid_t nid = 0; 3126e05df3b1SJaegeuk Kim unsigned int found; 3127e05df3b1SJaegeuk Kim 3128e05df3b1SJaegeuk Kim if (!nm_i) 3129e05df3b1SJaegeuk Kim return; 3130e05df3b1SJaegeuk Kim 3131e05df3b1SJaegeuk Kim /* destroy free nid list */ 3132b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 31339a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3134a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3135b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3136cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3137b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3138e05df3b1SJaegeuk Kim } 31399a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 31409a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 31419a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3142b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3143e05df3b1SJaegeuk Kim 3144e05df3b1SJaegeuk Kim /* destroy nat cache */ 3145b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3146e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3147e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3148e05df3b1SJaegeuk Kim unsigned idx; 31497aed0d45SJaegeuk Kim 3150b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 315122969158SChao Yu for (idx = 0; idx < found; idx++) { 315222969158SChao Yu spin_lock(&nm_i->nat_list_lock); 315322969158SChao Yu list_del(&natvec[idx]->list); 315422969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 315522969158SChao Yu 3156b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3157e05df3b1SJaegeuk Kim } 315822969158SChao Yu } 31599850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 31607aed0d45SJaegeuk Kim 31617aed0d45SJaegeuk Kim /* destroy nat set cache */ 31627aed0d45SJaegeuk Kim nid = 0; 31637aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 31647aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 31657aed0d45SJaegeuk Kim unsigned idx; 31667aed0d45SJaegeuk Kim 31677aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 31687aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 31697aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 31707aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 31717aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 31727aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 31737aed0d45SJaegeuk Kim } 31747aed0d45SJaegeuk Kim } 3175b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3176e05df3b1SJaegeuk Kim 31774ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3178bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3179bb1105e4SJaegeuk Kim int i; 3180bb1105e4SJaegeuk Kim 3181bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3182bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 31835222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3184bb1105e4SJaegeuk Kim } 3185586d1492SChao Yu kvfree(nm_i->free_nid_count); 31864ac91242SChao Yu 31875222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 31885222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3189599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 31905222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3191599a09b2SChao Yu #endif 3192e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 31935222595dSJaegeuk Kim kvfree(nm_i); 3194e05df3b1SJaegeuk Kim } 3195e05df3b1SJaegeuk Kim 31964d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3197e05df3b1SJaegeuk Kim { 3198e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 3199e8512d2eSGu Zheng sizeof(struct nat_entry)); 3200e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3201aec71382SChao Yu goto fail; 3202e05df3b1SJaegeuk Kim 3203e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 3204e8512d2eSGu Zheng sizeof(struct free_nid)); 3205aec71382SChao Yu if (!free_nid_slab) 3206ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3207aec71382SChao Yu 3208aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 3209aec71382SChao Yu sizeof(struct nat_entry_set)); 3210aec71382SChao Yu if (!nat_entry_set_slab) 3211ce3e6d25SMarkus Elfring goto destroy_free_nid; 321250fa53ecSChao Yu 321350fa53ecSChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("fsync_node_entry", 321450fa53ecSChao Yu sizeof(struct fsync_node_entry)); 321550fa53ecSChao Yu if (!fsync_node_entry_slab) 321650fa53ecSChao Yu goto destroy_nat_entry_set; 3217e05df3b1SJaegeuk Kim return 0; 3218aec71382SChao Yu 321950fa53ecSChao Yu destroy_nat_entry_set: 322050fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3221ce3e6d25SMarkus Elfring destroy_free_nid: 3222aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3223ce3e6d25SMarkus Elfring destroy_nat_entry: 3224aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3225aec71382SChao Yu fail: 3226aec71382SChao Yu return -ENOMEM; 3227e05df3b1SJaegeuk Kim } 3228e05df3b1SJaegeuk Kim 32294d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3230e05df3b1SJaegeuk Kim { 323150fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3232aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3233e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3234e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3235e05df3b1SJaegeuk Kim } 3236