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); 37a4f843bdSJaegeuk Kim f2fs_msg(sbi->sb, KERN_WARNING, 38a4f843bdSJaegeuk Kim "%s: out-of-range nid=%x, run fsck to fix.", 39a4f843bdSJaegeuk Kim __func__, nid); 40a4f843bdSJaegeuk Kim return -EINVAL; 41a4f843bdSJaegeuk Kim } 42a4f843bdSJaegeuk Kim return 0; 43a4f843bdSJaegeuk Kim } 44a4f843bdSJaegeuk Kim 454d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 46cdfc41c1SJaegeuk Kim { 476fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 48cdfc41c1SJaegeuk Kim struct sysinfo val; 49e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 50cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 516fb03f3aSJaegeuk Kim bool res = false; 52cdfc41c1SJaegeuk Kim 53cdfc41c1SJaegeuk Kim si_meminfo(&val); 54e5e7ea3cSJaegeuk Kim 55e5e7ea3cSJaegeuk Kim /* only uses low memory */ 56e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 57e5e7ea3cSJaegeuk Kim 58429511cdSChao Yu /* 59429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 60429511cdSChao Yu */ 616fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 629a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 63b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 64e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 656fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 66e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 6709cbfeafSKirill A. Shutemov PAGE_SHIFT; 68e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 69e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 70e589c2c4SJaegeuk Kim res = false; 71a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 72a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 73a1257023SJaegeuk Kim return false; 74a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 75a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 76e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 77e5e7ea3cSJaegeuk Kim int i; 78e5e7ea3cSJaegeuk Kim 7939d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 808f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 818f73cbb7SKinglong Mee sizeof(struct ino_entry); 828f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 83e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 84429511cdSChao Yu } else if (type == EXTENT_CACHE) { 857441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 867441ccefSJaegeuk Kim sizeof(struct extent_tree) + 87429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 8809cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 89429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 9057864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 9157864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 9257864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 9357864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 941e84371fSJaegeuk Kim } else { 951663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 961663cae4SJaegeuk Kim return true; 976fb03f3aSJaegeuk Kim } 986fb03f3aSJaegeuk Kim return res; 99cdfc41c1SJaegeuk Kim } 100cdfc41c1SJaegeuk Kim 101e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 102e05df3b1SJaegeuk Kim { 103e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1045ec2d99dSMatthew Wilcox f2fs_clear_page_cache_dirty_tag(page); 105e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 106aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 107e05df3b1SJaegeuk Kim } 108e05df3b1SJaegeuk Kim ClearPageUptodate(page); 109e05df3b1SJaegeuk Kim } 110e05df3b1SJaegeuk Kim 111e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 112e05df3b1SJaegeuk Kim { 11380551d17SChao Yu return f2fs_get_meta_page_nofail(sbi, current_nat_addr(sbi, nid)); 114e05df3b1SJaegeuk Kim } 115e05df3b1SJaegeuk Kim 116e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 117e05df3b1SJaegeuk Kim { 118e05df3b1SJaegeuk Kim struct page *src_page; 119e05df3b1SJaegeuk Kim struct page *dst_page; 120e05df3b1SJaegeuk Kim pgoff_t dst_off; 121e05df3b1SJaegeuk Kim void *src_addr; 122e05df3b1SJaegeuk Kim void *dst_addr; 123e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 124e05df3b1SJaegeuk Kim 12580551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 126e05df3b1SJaegeuk Kim 127e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 12880551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 129edc55aafSJaegeuk Kim if (IS_ERR(src_page)) 130edc55aafSJaegeuk Kim return src_page; 1314d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1329850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 133e05df3b1SJaegeuk Kim 134e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 135e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13609cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 137e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 138e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 139e05df3b1SJaegeuk Kim 140e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 141e05df3b1SJaegeuk Kim 142e05df3b1SJaegeuk Kim return dst_page; 143e05df3b1SJaegeuk Kim } 144e05df3b1SJaegeuk Kim 14512f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 14612f9ef37SYunlei He { 14712f9ef37SYunlei He struct nat_entry *new; 14812f9ef37SYunlei He 14912f9ef37SYunlei He if (no_fail) 1502882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15112f9ef37SYunlei He else 1522882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15312f9ef37SYunlei He if (new) { 15412f9ef37SYunlei He nat_set_nid(new, nid); 15512f9ef37SYunlei He nat_reset_flag(new); 15612f9ef37SYunlei He } 15712f9ef37SYunlei He return new; 15812f9ef37SYunlei He } 15912f9ef37SYunlei He 16012f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 16112f9ef37SYunlei He { 16212f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 16312f9ef37SYunlei He } 16412f9ef37SYunlei He 16512f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16612f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 16712f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 16812f9ef37SYunlei He { 16912f9ef37SYunlei He if (no_fail) 17012f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 17112f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 17212f9ef37SYunlei He return NULL; 17312f9ef37SYunlei He 17412f9ef37SYunlei He if (raw_ne) 17512f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17622969158SChao Yu 17722969158SChao Yu spin_lock(&nm_i->nat_list_lock); 17812f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 17922969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 18022969158SChao Yu 18112f9ef37SYunlei He nm_i->nat_cnt++; 18212f9ef37SYunlei He return ne; 18312f9ef37SYunlei He } 18412f9ef37SYunlei He 185e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 186e05df3b1SJaegeuk Kim { 18722969158SChao Yu struct nat_entry *ne; 18822969158SChao Yu 18922969158SChao Yu ne = radix_tree_lookup(&nm_i->nat_root, n); 19022969158SChao Yu 19122969158SChao Yu /* for recent accessed nat entry, move it to tail of lru list */ 19222969158SChao Yu if (ne && !get_nat_flag(ne, IS_DIRTY)) { 19322969158SChao Yu spin_lock(&nm_i->nat_list_lock); 19422969158SChao Yu if (!list_empty(&ne->list)) 19522969158SChao Yu list_move_tail(&ne->list, &nm_i->nat_entries); 19622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 19722969158SChao Yu } 19822969158SChao Yu 19922969158SChao Yu return ne; 200e05df3b1SJaegeuk Kim } 201e05df3b1SJaegeuk Kim 202e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 203e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 204e05df3b1SJaegeuk Kim { 205e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 206e05df3b1SJaegeuk Kim } 207e05df3b1SJaegeuk Kim 208e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 209e05df3b1SJaegeuk Kim { 210e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 211e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 21212f9ef37SYunlei He __free_nat_entry(e); 213e05df3b1SJaegeuk Kim } 214e05df3b1SJaegeuk Kim 215780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 216309cc2b6SJaegeuk Kim struct nat_entry *ne) 217309cc2b6SJaegeuk Kim { 218309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 219309cc2b6SJaegeuk Kim struct nat_entry_set *head; 220309cc2b6SJaegeuk Kim 221309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 222309cc2b6SJaegeuk Kim if (!head) { 22380c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 224309cc2b6SJaegeuk Kim 225309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 226309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 227309cc2b6SJaegeuk Kim head->set = set; 228309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2299be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 230309cc2b6SJaegeuk Kim } 231780de47cSChao Yu return head; 232780de47cSChao Yu } 233780de47cSChao Yu 234780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 235780de47cSChao Yu struct nat_entry *ne) 236780de47cSChao Yu { 237780de47cSChao Yu struct nat_entry_set *head; 238780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 239780de47cSChao Yu 240780de47cSChao Yu if (!new_ne) 241780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 242780de47cSChao Yu 243780de47cSChao Yu /* 244780de47cSChao Yu * update entry_cnt in below condition: 245780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 246780de47cSChao Yu * 2. update old block address to new one; 247780de47cSChao Yu */ 248780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 249780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 250780de47cSChao Yu head->entry_cnt++; 251780de47cSChao Yu 252780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 253febeca6dSChao Yu 254febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 255febeca6dSChao Yu goto refresh_list; 256febeca6dSChao Yu 257309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 258309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 259febeca6dSChao Yu refresh_list: 26022969158SChao Yu spin_lock(&nm_i->nat_list_lock); 261780de47cSChao Yu if (new_ne) 262febeca6dSChao Yu list_del_init(&ne->list); 263febeca6dSChao Yu else 264febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 26522969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 266309cc2b6SJaegeuk Kim } 267309cc2b6SJaegeuk Kim 268309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2690b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 270309cc2b6SJaegeuk Kim { 27122969158SChao Yu spin_lock(&nm_i->nat_list_lock); 272309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 27322969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 27422969158SChao Yu 275309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2760b28b71eSKinglong Mee set->entry_cnt--; 277309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 278309cc2b6SJaegeuk Kim } 279309cc2b6SJaegeuk Kim 280309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 281309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 282309cc2b6SJaegeuk Kim { 283309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 284309cc2b6SJaegeuk Kim start, nr); 285309cc2b6SJaegeuk Kim } 286309cc2b6SJaegeuk Kim 28750fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 28850fa53ecSChao Yu { 28950fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 29050fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 29150fa53ecSChao Yu } 29250fa53ecSChao Yu 29350fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 29450fa53ecSChao Yu { 29550fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 29650fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 29750fa53ecSChao Yu sbi->fsync_seg_id = 0; 29850fa53ecSChao Yu sbi->fsync_node_num = 0; 29950fa53ecSChao Yu } 30050fa53ecSChao Yu 30150fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 30250fa53ecSChao Yu struct page *page) 30350fa53ecSChao Yu { 30450fa53ecSChao Yu struct fsync_node_entry *fn; 30550fa53ecSChao Yu unsigned long flags; 30650fa53ecSChao Yu unsigned int seq_id; 30750fa53ecSChao Yu 30850fa53ecSChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, GFP_NOFS); 30950fa53ecSChao Yu 31050fa53ecSChao Yu get_page(page); 31150fa53ecSChao Yu fn->page = page; 31250fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 31350fa53ecSChao Yu 31450fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 31550fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 31650fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 31750fa53ecSChao Yu seq_id = fn->seq_id; 31850fa53ecSChao Yu sbi->fsync_node_num++; 31950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 32050fa53ecSChao Yu 32150fa53ecSChao Yu return seq_id; 32250fa53ecSChao Yu } 32350fa53ecSChao Yu 32450fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 32550fa53ecSChao Yu { 32650fa53ecSChao Yu struct fsync_node_entry *fn; 32750fa53ecSChao Yu unsigned long flags; 32850fa53ecSChao Yu 32950fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 33050fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 33150fa53ecSChao Yu if (fn->page == page) { 33250fa53ecSChao Yu list_del(&fn->list); 33350fa53ecSChao Yu sbi->fsync_node_num--; 33450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 33550fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 33650fa53ecSChao Yu put_page(page); 33750fa53ecSChao Yu return; 33850fa53ecSChao Yu } 33950fa53ecSChao Yu } 34050fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 34150fa53ecSChao Yu f2fs_bug_on(sbi, 1); 34250fa53ecSChao Yu } 34350fa53ecSChao Yu 34450fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 34550fa53ecSChao Yu { 34650fa53ecSChao Yu unsigned long flags; 34750fa53ecSChao Yu 34850fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 34950fa53ecSChao Yu sbi->fsync_seg_id = 0; 35050fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 35150fa53ecSChao Yu } 35250fa53ecSChao Yu 3534d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3542dcf51abSJaegeuk Kim { 3552dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3562dcf51abSJaegeuk Kim struct nat_entry *e; 3572dcf51abSJaegeuk Kim bool need = false; 3582dcf51abSJaegeuk Kim 359b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 3602dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3612dcf51abSJaegeuk Kim if (e) { 3622dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3632dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3642dcf51abSJaegeuk Kim need = true; 3652dcf51abSJaegeuk Kim } 366b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 3672dcf51abSJaegeuk Kim return need; 3682dcf51abSJaegeuk Kim } 3692dcf51abSJaegeuk Kim 3704d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 371e05df3b1SJaegeuk Kim { 372e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 373e05df3b1SJaegeuk Kim struct nat_entry *e; 37488bd02c9SJaegeuk Kim bool is_cp = true; 375e05df3b1SJaegeuk Kim 376b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 377e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3787ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 37988bd02c9SJaegeuk Kim is_cp = false; 380b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 381e05df3b1SJaegeuk Kim return is_cp; 382e05df3b1SJaegeuk Kim } 383e05df3b1SJaegeuk Kim 3844d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 385b6fe5873SJaegeuk Kim { 386b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 387b6fe5873SJaegeuk Kim struct nat_entry *e; 38888bd02c9SJaegeuk Kim bool need_update = true; 389b6fe5873SJaegeuk Kim 390b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 39188bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 39288bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 39388bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 39488bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 39588bd02c9SJaegeuk Kim need_update = false; 396b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 39788bd02c9SJaegeuk Kim return need_update; 398b6fe5873SJaegeuk Kim } 399b6fe5873SJaegeuk Kim 40012f9ef37SYunlei He /* must be locked by nat_tree_lock */ 4011515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 402e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 403e05df3b1SJaegeuk Kim { 4041515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 40512f9ef37SYunlei He struct nat_entry *new, *e; 4069be32d72SJaegeuk Kim 40712f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 40812f9ef37SYunlei He if (!new) 40912f9ef37SYunlei He return; 41012f9ef37SYunlei He 41112f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 412e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 41312f9ef37SYunlei He if (!e) 41412f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 41512f9ef37SYunlei He else 4160c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 4170c0b471eSEric Biggers nat_get_blkaddr(e) != 4180c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4191515aef0SChao Yu nat_get_version(e) != ne->version); 42012f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 42112f9ef37SYunlei He if (e != new) 42212f9ef37SYunlei He __free_nat_entry(new); 423e05df3b1SJaegeuk Kim } 424e05df3b1SJaegeuk Kim 425e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 426479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 427e05df3b1SJaegeuk Kim { 428e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 429e05df3b1SJaegeuk Kim struct nat_entry *e; 43012f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 4319be32d72SJaegeuk Kim 432b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 433e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 434e05df3b1SJaegeuk Kim if (!e) { 43512f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4365c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4379850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 438e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 439e05df3b1SJaegeuk Kim /* 440e05df3b1SJaegeuk Kim * when nid is reallocated, 441e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 442e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 443e05df3b1SJaegeuk Kim */ 4445c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4459850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 446e05df3b1SJaegeuk Kim } 44712f9ef37SYunlei He /* let's free early to reduce memory consumption */ 44812f9ef37SYunlei He if (e != new) 44912f9ef37SYunlei He __free_nat_entry(new); 450e05df3b1SJaegeuk Kim 451e05df3b1SJaegeuk Kim /* sanity check */ 4529850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4539850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 454e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4559850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 456e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 45793770ab7SChao Yu f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) && 458e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 459e05df3b1SJaegeuk Kim 460e1c42045Sarter97 /* increment version no as node is removed */ 461e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 462e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 463e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 464e05df3b1SJaegeuk Kim } 465e05df3b1SJaegeuk Kim 466e05df3b1SJaegeuk Kim /* change address */ 467e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 46893770ab7SChao Yu if (!__is_valid_data_blkaddr(new_blkaddr)) 46988bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 470e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 471479f40c4SJaegeuk Kim 472479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 473d5b692b7SChao Yu if (ni->nid != ni->ino) 474479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 47588bd02c9SJaegeuk Kim if (e) { 47688bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 47788bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 47888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 47988bd02c9SJaegeuk Kim } 480b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 481e05df3b1SJaegeuk Kim } 482e05df3b1SJaegeuk Kim 4834d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 484e05df3b1SJaegeuk Kim { 485e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 4861b38dc8eSJaegeuk Kim int nr = nr_shrink; 487e05df3b1SJaegeuk Kim 488b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 489b873b798SJaegeuk Kim return 0; 490e05df3b1SJaegeuk Kim 49122969158SChao Yu spin_lock(&nm_i->nat_list_lock); 49222969158SChao Yu while (nr_shrink) { 493e05df3b1SJaegeuk Kim struct nat_entry *ne; 49422969158SChao Yu 49522969158SChao Yu if (list_empty(&nm_i->nat_entries)) 49622969158SChao Yu break; 49722969158SChao Yu 498e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 499e05df3b1SJaegeuk Kim struct nat_entry, list); 50022969158SChao Yu list_del(&ne->list); 50122969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 50222969158SChao Yu 503e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 504e05df3b1SJaegeuk Kim nr_shrink--; 50522969158SChao Yu 50622969158SChao Yu spin_lock(&nm_i->nat_list_lock); 507e05df3b1SJaegeuk Kim } 50822969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 50922969158SChao Yu 510b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 5111b38dc8eSJaegeuk Kim return nr - nr_shrink; 512e05df3b1SJaegeuk Kim } 513e05df3b1SJaegeuk Kim 5140a8165d7SJaegeuk Kim /* 515e1c42045Sarter97 * This function always returns success 516e05df3b1SJaegeuk Kim */ 5177735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 5184d57b86dSChao Yu struct node_info *ni) 519e05df3b1SJaegeuk Kim { 520e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 521e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 522b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 523e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 524e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 525e05df3b1SJaegeuk Kim struct page *page = NULL; 526e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 527e05df3b1SJaegeuk Kim struct nat_entry *e; 52866a82d1fSYunlei He pgoff_t index; 52993770ab7SChao Yu block_t blkaddr; 530e05df3b1SJaegeuk Kim int i; 531e05df3b1SJaegeuk Kim 532e05df3b1SJaegeuk Kim ni->nid = nid; 533e05df3b1SJaegeuk Kim 534e05df3b1SJaegeuk Kim /* Check nat cache */ 535b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 536e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 537e05df3b1SJaegeuk Kim if (e) { 538e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 539e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 540e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 541b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5427735730dSChao Yu return 0; 5431515aef0SChao Yu } 544e05df3b1SJaegeuk Kim 5453547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 5463547ea96SJaegeuk Kim 547e05df3b1SJaegeuk Kim /* Check current segment summary */ 548b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5494d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 550e05df3b1SJaegeuk Kim if (i >= 0) { 551dfc08a12SChao Yu ne = nat_in_journal(journal, i); 552e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 553e05df3b1SJaegeuk Kim } 554b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 55566a82d1fSYunlei He if (i >= 0) { 55666a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 557e05df3b1SJaegeuk Kim goto cache; 55866a82d1fSYunlei He } 559e05df3b1SJaegeuk Kim 560e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 56166a82d1fSYunlei He index = current_nat_addr(sbi, nid); 56266a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 56366a82d1fSYunlei He 5644d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5657735730dSChao Yu if (IS_ERR(page)) 5667735730dSChao Yu return PTR_ERR(page); 5677735730dSChao Yu 568e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 569e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 570e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 571e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 572e05df3b1SJaegeuk Kim cache: 57393770ab7SChao Yu blkaddr = le32_to_cpu(ne.block_addr); 57493770ab7SChao Yu if (__is_valid_data_blkaddr(blkaddr) && 57593770ab7SChao Yu !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) 57693770ab7SChao Yu return -EFAULT; 57793770ab7SChao Yu 578e05df3b1SJaegeuk Kim /* cache nat entry */ 5791515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 5807735730dSChao Yu return 0; 581e05df3b1SJaegeuk Kim } 582e05df3b1SJaegeuk Kim 58379344efbSJaegeuk Kim /* 58479344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 58579344efbSJaegeuk Kim */ 5864d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 58779344efbSJaegeuk Kim { 58879344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 58979344efbSJaegeuk Kim struct blk_plug plug; 59079344efbSJaegeuk Kim int i, end; 59179344efbSJaegeuk Kim nid_t nid; 59279344efbSJaegeuk Kim 59379344efbSJaegeuk Kim blk_start_plug(&plug); 59479344efbSJaegeuk Kim 59579344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 59679344efbSJaegeuk Kim end = start + n; 59779344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 59879344efbSJaegeuk Kim for (i = start; i < end; i++) { 59979344efbSJaegeuk Kim nid = get_nid(parent, i, false); 6004d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 60179344efbSJaegeuk Kim } 60279344efbSJaegeuk Kim 60379344efbSJaegeuk Kim blk_finish_plug(&plug); 60479344efbSJaegeuk Kim } 60579344efbSJaegeuk Kim 6064d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6073cf45747SChao Yu { 6083cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 609d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(dn->inode); 610d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK; 611d02a6e61SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode); 6123cf45747SChao Yu int cur_level = dn->cur_level; 6133cf45747SChao Yu int max_level = dn->max_level; 6143cf45747SChao Yu pgoff_t base = 0; 6153cf45747SChao Yu 6163cf45747SChao Yu if (!dn->max_level) 6173cf45747SChao Yu return pgofs + 1; 6183cf45747SChao Yu 6193cf45747SChao Yu while (max_level-- > cur_level) 6203cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6213cf45747SChao Yu 6223cf45747SChao Yu switch (dn->max_level) { 6233cf45747SChao Yu case 3: 6243cf45747SChao Yu base += 2 * indirect_blks; 6253cf45747SChao Yu case 2: 6263cf45747SChao Yu base += 2 * direct_blks; 6273cf45747SChao Yu case 1: 6283cf45747SChao Yu base += direct_index; 6293cf45747SChao Yu break; 6303cf45747SChao Yu default: 6313cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6323cf45747SChao Yu } 6333cf45747SChao Yu 6343cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6353cf45747SChao Yu } 6363cf45747SChao Yu 6370a8165d7SJaegeuk Kim /* 638e05df3b1SJaegeuk Kim * The maximum depth is four. 639e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 640e05df3b1SJaegeuk Kim */ 64181ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 642de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 643e05df3b1SJaegeuk Kim { 64481ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 645d02a6e61SChao Yu const long direct_blks = ADDRS_PER_BLOCK(inode); 646e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 647d02a6e61SChao Yu const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK; 648e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 649e05df3b1SJaegeuk Kim int n = 0; 650e05df3b1SJaegeuk Kim int level = 0; 651e05df3b1SJaegeuk Kim 652e05df3b1SJaegeuk Kim noffset[0] = 0; 653e05df3b1SJaegeuk Kim 654e05df3b1SJaegeuk Kim if (block < direct_index) { 65525c0a6e5SNamjae Jeon offset[n] = block; 656e05df3b1SJaegeuk Kim goto got; 657e05df3b1SJaegeuk Kim } 658e05df3b1SJaegeuk Kim block -= direct_index; 659e05df3b1SJaegeuk Kim if (block < direct_blks) { 660e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 661e05df3b1SJaegeuk Kim noffset[n] = 1; 66225c0a6e5SNamjae Jeon offset[n] = block; 663e05df3b1SJaegeuk Kim level = 1; 664e05df3b1SJaegeuk Kim goto got; 665e05df3b1SJaegeuk Kim } 666e05df3b1SJaegeuk Kim block -= direct_blks; 667e05df3b1SJaegeuk Kim if (block < direct_blks) { 668e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 669e05df3b1SJaegeuk Kim noffset[n] = 2; 67025c0a6e5SNamjae Jeon offset[n] = block; 671e05df3b1SJaegeuk Kim level = 1; 672e05df3b1SJaegeuk Kim goto got; 673e05df3b1SJaegeuk Kim } 674e05df3b1SJaegeuk Kim block -= direct_blks; 675e05df3b1SJaegeuk Kim if (block < indirect_blks) { 676e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 677e05df3b1SJaegeuk Kim noffset[n] = 3; 678e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 679e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 68025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 681e05df3b1SJaegeuk Kim level = 2; 682e05df3b1SJaegeuk Kim goto got; 683e05df3b1SJaegeuk Kim } 684e05df3b1SJaegeuk Kim block -= indirect_blks; 685e05df3b1SJaegeuk Kim if (block < indirect_blks) { 686e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 687e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 688e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 689e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 69025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 691e05df3b1SJaegeuk Kim level = 2; 692e05df3b1SJaegeuk Kim goto got; 693e05df3b1SJaegeuk Kim } 694e05df3b1SJaegeuk Kim block -= indirect_blks; 695e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 696e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 697e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 698e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 699e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 700e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 701e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 702e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 703e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 704e05df3b1SJaegeuk Kim offset[n - 1]; 70525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 706e05df3b1SJaegeuk Kim level = 3; 707e05df3b1SJaegeuk Kim goto got; 708e05df3b1SJaegeuk Kim } else { 709adb6dc19SJaegeuk Kim return -E2BIG; 710e05df3b1SJaegeuk Kim } 711e05df3b1SJaegeuk Kim got: 712e05df3b1SJaegeuk Kim return level; 713e05df3b1SJaegeuk Kim } 714e05df3b1SJaegeuk Kim 715e05df3b1SJaegeuk Kim /* 716e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7174f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7184f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 71939936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 720e05df3b1SJaegeuk Kim */ 7214d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 722e05df3b1SJaegeuk Kim { 7234081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 724e05df3b1SJaegeuk Kim struct page *npage[4]; 725f1a3b98eSJaegeuk Kim struct page *parent = NULL; 726e05df3b1SJaegeuk Kim int offset[4]; 727e05df3b1SJaegeuk Kim unsigned int noffset[4]; 728e05df3b1SJaegeuk Kim nid_t nids[4]; 7293cf45747SChao Yu int level, i = 0; 730e05df3b1SJaegeuk Kim int err = 0; 731e05df3b1SJaegeuk Kim 73281ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 733adb6dc19SJaegeuk Kim if (level < 0) 734adb6dc19SJaegeuk Kim return level; 735e05df3b1SJaegeuk Kim 736e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7371646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7381646cfacSJaegeuk Kim 7391646cfacSJaegeuk Kim if (!npage[0]) { 7404d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 741e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 742e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7431646cfacSJaegeuk Kim } 744f1a3b98eSJaegeuk Kim 745f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 746f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 74776629165SJaegeuk Kim err = -ENOENT; 748f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 749f1a3b98eSJaegeuk Kim goto release_out; 750f1a3b98eSJaegeuk Kim } 751f1a3b98eSJaegeuk Kim 752e05df3b1SJaegeuk Kim parent = npage[0]; 75352c2db3fSChangman Lee if (level != 0) 754e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 755e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 756e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 757e05df3b1SJaegeuk Kim 758e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 759e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 760e05df3b1SJaegeuk Kim bool done = false; 761e05df3b1SJaegeuk Kim 762266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 763e05df3b1SJaegeuk Kim /* alloc new node */ 7644d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 765e05df3b1SJaegeuk Kim err = -ENOSPC; 766e05df3b1SJaegeuk Kim goto release_pages; 767e05df3b1SJaegeuk Kim } 768e05df3b1SJaegeuk Kim 769e05df3b1SJaegeuk Kim dn->nid = nids[i]; 7704d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 771e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 7724d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 773e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 774e05df3b1SJaegeuk Kim goto release_pages; 775e05df3b1SJaegeuk Kim } 776e05df3b1SJaegeuk Kim 777e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 7784d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 779e05df3b1SJaegeuk Kim done = true; 780266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 7814d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 782e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 783e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 784e05df3b1SJaegeuk Kim goto release_pages; 785e05df3b1SJaegeuk Kim } 786e05df3b1SJaegeuk Kim done = true; 787e05df3b1SJaegeuk Kim } 788e05df3b1SJaegeuk Kim if (i == 1) { 789e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 790e05df3b1SJaegeuk Kim unlock_page(parent); 791e05df3b1SJaegeuk Kim } else { 792e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 793e05df3b1SJaegeuk Kim } 794e05df3b1SJaegeuk Kim 795e05df3b1SJaegeuk Kim if (!done) { 7964d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 797e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 798e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 799e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 800e05df3b1SJaegeuk Kim goto release_out; 801e05df3b1SJaegeuk Kim } 802e05df3b1SJaegeuk Kim } 803e05df3b1SJaegeuk Kim if (i < level) { 804e05df3b1SJaegeuk Kim parent = npage[i]; 805e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 806e05df3b1SJaegeuk Kim } 807e05df3b1SJaegeuk Kim } 808e05df3b1SJaegeuk Kim dn->nid = nids[level]; 809e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 810e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 8117a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 8127a2af766SChao Yu dn->node_page, dn->ofs_in_node); 813e05df3b1SJaegeuk Kim return 0; 814e05df3b1SJaegeuk Kim 815e05df3b1SJaegeuk Kim release_pages: 816e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 817e05df3b1SJaegeuk Kim if (i > 1) 818e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 819e05df3b1SJaegeuk Kim release_out: 820e05df3b1SJaegeuk Kim dn->inode_page = NULL; 821e05df3b1SJaegeuk Kim dn->node_page = NULL; 8223cf45747SChao Yu if (err == -ENOENT) { 8233cf45747SChao Yu dn->cur_level = i; 8243cf45747SChao Yu dn->max_level = level; 8250a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8263cf45747SChao Yu } 827e05df3b1SJaegeuk Kim return err; 828e05df3b1SJaegeuk Kim } 829e05df3b1SJaegeuk Kim 8307735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 831e05df3b1SJaegeuk Kim { 8324081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 833e05df3b1SJaegeuk Kim struct node_info ni; 8347735730dSChao Yu int err; 8350ea295ddSPan Bian pgoff_t index; 836e05df3b1SJaegeuk Kim 8377735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8387735730dSChao Yu if (err) 8397735730dSChao Yu return err; 840e05df3b1SJaegeuk Kim 841e05df3b1SJaegeuk Kim /* Deallocate node address */ 8424d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 843000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 844479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 845e05df3b1SJaegeuk Kim 846e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 8474d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 848e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 8490f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 850e05df3b1SJaegeuk Kim } 851000519f2SChao Yu 852e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 853caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 854e05df3b1SJaegeuk Kim 8550ea295ddSPan Bian index = dn->node_page->index; 856e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 857bf39c00aSJaegeuk Kim 858bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 8590ea295ddSPan Bian index, index); 860bf39c00aSJaegeuk Kim 861e05df3b1SJaegeuk Kim dn->node_page = NULL; 86251dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 8637735730dSChao Yu 8647735730dSChao Yu return 0; 865e05df3b1SJaegeuk Kim } 866e05df3b1SJaegeuk Kim 867e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 868e05df3b1SJaegeuk Kim { 869e05df3b1SJaegeuk Kim struct page *page; 8707735730dSChao Yu int err; 871e05df3b1SJaegeuk Kim 872e05df3b1SJaegeuk Kim if (dn->nid == 0) 873e05df3b1SJaegeuk Kim return 1; 874e05df3b1SJaegeuk Kim 875e05df3b1SJaegeuk Kim /* get direct node */ 8764d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 877e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 878e05df3b1SJaegeuk Kim return 1; 879e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 880e05df3b1SJaegeuk Kim return PTR_ERR(page); 881e05df3b1SJaegeuk Kim 882e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 883e05df3b1SJaegeuk Kim dn->node_page = page; 884e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 8854d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 8867735730dSChao Yu err = truncate_node(dn); 8877735730dSChao Yu if (err) 8887735730dSChao Yu return err; 8897735730dSChao Yu 890e05df3b1SJaegeuk Kim return 1; 891e05df3b1SJaegeuk Kim } 892e05df3b1SJaegeuk Kim 893e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 894e05df3b1SJaegeuk Kim int ofs, int depth) 895e05df3b1SJaegeuk Kim { 896e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 897e05df3b1SJaegeuk Kim struct page *page; 898e05df3b1SJaegeuk Kim struct f2fs_node *rn; 899e05df3b1SJaegeuk Kim nid_t child_nid; 900e05df3b1SJaegeuk Kim unsigned int child_nofs; 901e05df3b1SJaegeuk Kim int freed = 0; 902e05df3b1SJaegeuk Kim int i, ret; 903e05df3b1SJaegeuk Kim 904e05df3b1SJaegeuk Kim if (dn->nid == 0) 905e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 906e05df3b1SJaegeuk Kim 90751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 90851dd6249SNamjae Jeon 9094d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 91051dd6249SNamjae Jeon if (IS_ERR(page)) { 91151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 912e05df3b1SJaegeuk Kim return PTR_ERR(page); 91351dd6249SNamjae Jeon } 914e05df3b1SJaegeuk Kim 9154d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 91679344efbSJaegeuk Kim 91745590710SGu Zheng rn = F2FS_NODE(page); 918e05df3b1SJaegeuk Kim if (depth < 3) { 919e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 920e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 921e05df3b1SJaegeuk Kim if (child_nid == 0) 922e05df3b1SJaegeuk Kim continue; 923e05df3b1SJaegeuk Kim rdn.nid = child_nid; 924e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 925e05df3b1SJaegeuk Kim if (ret < 0) 926e05df3b1SJaegeuk Kim goto out_err; 92712719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 92893bae099SJaegeuk Kim dn->node_changed = true; 929e05df3b1SJaegeuk Kim } 930e05df3b1SJaegeuk Kim } else { 931e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 932e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 933e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 934e05df3b1SJaegeuk Kim if (child_nid == 0) { 935e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 936e05df3b1SJaegeuk Kim continue; 937e05df3b1SJaegeuk Kim } 938e05df3b1SJaegeuk Kim rdn.nid = child_nid; 939e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 940e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 94112719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 94293bae099SJaegeuk Kim dn->node_changed = true; 943e05df3b1SJaegeuk Kim child_nofs += ret; 944e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 945e05df3b1SJaegeuk Kim goto out_err; 946e05df3b1SJaegeuk Kim } 947e05df3b1SJaegeuk Kim } 948e05df3b1SJaegeuk Kim freed = child_nofs; 949e05df3b1SJaegeuk Kim } 950e05df3b1SJaegeuk Kim 951e05df3b1SJaegeuk Kim if (!ofs) { 952e05df3b1SJaegeuk Kim /* remove current indirect node */ 953e05df3b1SJaegeuk Kim dn->node_page = page; 9547735730dSChao Yu ret = truncate_node(dn); 9557735730dSChao Yu if (ret) 9567735730dSChao Yu goto out_err; 957e05df3b1SJaegeuk Kim freed++; 958e05df3b1SJaegeuk Kim } else { 959e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 960e05df3b1SJaegeuk Kim } 96151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 962e05df3b1SJaegeuk Kim return freed; 963e05df3b1SJaegeuk Kim 964e05df3b1SJaegeuk Kim out_err: 965e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 96651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 967e05df3b1SJaegeuk Kim return ret; 968e05df3b1SJaegeuk Kim } 969e05df3b1SJaegeuk Kim 970e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 971e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 972e05df3b1SJaegeuk Kim { 973e05df3b1SJaegeuk Kim struct page *pages[2]; 974e05df3b1SJaegeuk Kim nid_t nid[3]; 975e05df3b1SJaegeuk Kim nid_t child_nid; 976e05df3b1SJaegeuk Kim int err = 0; 977e05df3b1SJaegeuk Kim int i; 978e05df3b1SJaegeuk Kim int idx = depth - 2; 979e05df3b1SJaegeuk Kim 980e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 981e05df3b1SJaegeuk Kim if (!nid[0]) 982e05df3b1SJaegeuk Kim return 0; 983e05df3b1SJaegeuk Kim 984e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 985a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 986e1c42045Sarter97 /* reference count'll be increased */ 9874d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 988e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 989e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 990a225dca3Sshifei10.ge idx = i - 1; 991e05df3b1SJaegeuk Kim goto fail; 992e05df3b1SJaegeuk Kim } 993e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 994e05df3b1SJaegeuk Kim } 995e05df3b1SJaegeuk Kim 9964d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 99779344efbSJaegeuk Kim 998e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 999a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 1000e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 1001e05df3b1SJaegeuk Kim if (!child_nid) 1002e05df3b1SJaegeuk Kim continue; 1003e05df3b1SJaegeuk Kim dn->nid = child_nid; 1004e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 1005e05df3b1SJaegeuk Kim if (err < 0) 1006e05df3b1SJaegeuk Kim goto fail; 100712719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 100893bae099SJaegeuk Kim dn->node_changed = true; 1009e05df3b1SJaegeuk Kim } 1010e05df3b1SJaegeuk Kim 1011a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1012e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1013e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10147735730dSChao Yu err = truncate_node(dn); 10157735730dSChao Yu if (err) 10167735730dSChao Yu goto fail; 1017e05df3b1SJaegeuk Kim } else { 1018e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1019e05df3b1SJaegeuk Kim } 1020e05df3b1SJaegeuk Kim offset[idx]++; 1021a225dca3Sshifei10.ge offset[idx + 1] = 0; 1022a225dca3Sshifei10.ge idx--; 1023e05df3b1SJaegeuk Kim fail: 1024a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1025e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 102651dd6249SNamjae Jeon 102751dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 102851dd6249SNamjae Jeon 1029e05df3b1SJaegeuk Kim return err; 1030e05df3b1SJaegeuk Kim } 1031e05df3b1SJaegeuk Kim 10320a8165d7SJaegeuk Kim /* 1033e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1034e05df3b1SJaegeuk Kim */ 10354d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1036e05df3b1SJaegeuk Kim { 10374081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1038e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1039e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10407dd690c8SJaegeuk Kim unsigned int nofs = 0; 104158bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1042e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1043e05df3b1SJaegeuk Kim struct page *page; 1044e05df3b1SJaegeuk Kim 104551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 104651dd6249SNamjae Jeon 104781ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 1048adb6dc19SJaegeuk Kim if (level < 0) 1049adb6dc19SJaegeuk Kim return level; 1050ff373558SJaegeuk Kim 10514d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 105251dd6249SNamjae Jeon if (IS_ERR(page)) { 105351dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1054e05df3b1SJaegeuk Kim return PTR_ERR(page); 105551dd6249SNamjae Jeon } 1056e05df3b1SJaegeuk Kim 1057e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1058e05df3b1SJaegeuk Kim unlock_page(page); 1059e05df3b1SJaegeuk Kim 106058bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1061e05df3b1SJaegeuk Kim switch (level) { 1062e05df3b1SJaegeuk Kim case 0: 1063e05df3b1SJaegeuk Kim case 1: 1064e05df3b1SJaegeuk Kim nofs = noffset[1]; 1065e05df3b1SJaegeuk Kim break; 1066e05df3b1SJaegeuk Kim case 2: 1067e05df3b1SJaegeuk Kim nofs = noffset[1]; 1068e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1069e05df3b1SJaegeuk Kim goto skip_partial; 107058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1071e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1072e05df3b1SJaegeuk Kim goto fail; 1073e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1074e05df3b1SJaegeuk Kim break; 1075e05df3b1SJaegeuk Kim case 3: 1076e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1077e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1078e05df3b1SJaegeuk Kim goto skip_partial; 107958bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1080e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1081e05df3b1SJaegeuk Kim goto fail; 1082e05df3b1SJaegeuk Kim break; 1083e05df3b1SJaegeuk Kim default: 1084e05df3b1SJaegeuk Kim BUG(); 1085e05df3b1SJaegeuk Kim } 1086e05df3b1SJaegeuk Kim 1087e05df3b1SJaegeuk Kim skip_partial: 1088e05df3b1SJaegeuk Kim while (cont) { 108958bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1090e05df3b1SJaegeuk Kim switch (offset[0]) { 1091e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1092e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1093e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1094e05df3b1SJaegeuk Kim break; 1095e05df3b1SJaegeuk Kim 1096e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1097e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1098e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1099e05df3b1SJaegeuk Kim break; 1100e05df3b1SJaegeuk Kim 1101e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1102e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1103e05df3b1SJaegeuk Kim cont = 0; 1104e05df3b1SJaegeuk Kim break; 1105e05df3b1SJaegeuk Kim 1106e05df3b1SJaegeuk Kim default: 1107e05df3b1SJaegeuk Kim BUG(); 1108e05df3b1SJaegeuk Kim } 1109e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1110e05df3b1SJaegeuk Kim goto fail; 1111e05df3b1SJaegeuk Kim if (offset[1] == 0 && 111258bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1113e05df3b1SJaegeuk Kim lock_page(page); 1114ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1115bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 111658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1117e05df3b1SJaegeuk Kim set_page_dirty(page); 1118e05df3b1SJaegeuk Kim unlock_page(page); 1119e05df3b1SJaegeuk Kim } 1120e05df3b1SJaegeuk Kim offset[1] = 0; 1121e05df3b1SJaegeuk Kim offset[0]++; 1122e05df3b1SJaegeuk Kim nofs += err; 1123e05df3b1SJaegeuk Kim } 1124e05df3b1SJaegeuk Kim fail: 1125e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 112651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1127e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1128e05df3b1SJaegeuk Kim } 1129e05df3b1SJaegeuk Kim 11309c77f754SJaegeuk Kim /* caller must lock inode page */ 11314d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11324f16fb0fSJaegeuk Kim { 11334081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11344f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11354f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11364f16fb0fSJaegeuk Kim struct page *npage; 11377735730dSChao Yu int err; 11384f16fb0fSJaegeuk Kim 11394f16fb0fSJaegeuk Kim if (!nid) 11404f16fb0fSJaegeuk Kim return 0; 11414f16fb0fSJaegeuk Kim 11424d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11434f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11444f16fb0fSJaegeuk Kim return PTR_ERR(npage); 11454f16fb0fSJaegeuk Kim 11467735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 11477735730dSChao Yu err = truncate_node(&dn); 11487735730dSChao Yu if (err) { 11497735730dSChao Yu f2fs_put_page(npage, 1); 11507735730dSChao Yu return err; 11517735730dSChao Yu } 11527735730dSChao Yu 1153205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 115465985d93SJaegeuk Kim 11554f16fb0fSJaegeuk Kim return 0; 11564f16fb0fSJaegeuk Kim } 11574f16fb0fSJaegeuk Kim 115839936837SJaegeuk Kim /* 11594f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 11604f4124d0SChao Yu * f2fs_unlock_op(). 116139936837SJaegeuk Kim */ 11624d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1163e05df3b1SJaegeuk Kim { 1164e05df3b1SJaegeuk Kim struct dnode_of_data dn; 116513ec7297SChao Yu int err; 1166e05df3b1SJaegeuk Kim 1167c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 11684d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 116913ec7297SChao Yu if (err) 117013ec7297SChao Yu return err; 1171e05df3b1SJaegeuk Kim 11724d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 117313ec7297SChao Yu if (err) { 1174c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 117513ec7297SChao Yu return err; 1176e05df3b1SJaegeuk Kim } 1177c2e69583SJaegeuk Kim 1178c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1179c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1180c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 11814d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1182c2e69583SJaegeuk Kim 1183e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 11848d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 11858d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 11868d714f8aSJaegeuk Kim return -EIO; 11878d714f8aSJaegeuk Kim } 11888b6810f8SChao Yu 11898b6810f8SChao Yu if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) { 11908b6810f8SChao Yu f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, 11918b6810f8SChao Yu "Inconsistent i_blocks, ino:%lu, iblocks:%llu", 11928b6810f8SChao Yu inode->i_ino, 11938b6810f8SChao Yu (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); 1292b42b179bSChao Yu return -EBADMSG; 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)) { 1376704956ecSChao Yu err = -EBADMSG; 1377704956ecSChao Yu goto out_err; 1378704956ecSChao Yu } 1379e1c51b9fSChao Yu page_hit: 13800c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 13811f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 13821f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 13831f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 13841f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 13851f258ec1SChao Yu next_blkaddr_of_node(page)); 13861f258ec1SChao Yu err = -EINVAL; 13870c9df7fbSYunlong Song out_err: 1388ee605234SJaegeuk Kim ClearPageUptodate(page); 13890c9df7fbSYunlong Song f2fs_put_page(page, 1); 13901f258ec1SChao Yu return ERR_PTR(err); 13910c9df7fbSYunlong Song } 1392e05df3b1SJaegeuk Kim return page; 1393e05df3b1SJaegeuk Kim } 1394e05df3b1SJaegeuk Kim 13954d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 13960e022ea8SChao Yu { 13970e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 13980e022ea8SChao Yu } 13990e022ea8SChao Yu 14004d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1401e05df3b1SJaegeuk Kim { 14024081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 14030e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1404e05df3b1SJaegeuk Kim 14050e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1406e05df3b1SJaegeuk Kim } 1407e05df3b1SJaegeuk Kim 14082049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 14092049d4fcSJaegeuk Kim { 14102049d4fcSJaegeuk Kim struct inode *inode; 14112049d4fcSJaegeuk Kim struct page *page; 14120f3311a8SChao Yu int ret; 14132049d4fcSJaegeuk Kim 14142049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14152049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14162049d4fcSJaegeuk Kim if (!inode) 14172049d4fcSJaegeuk Kim return; 14182049d4fcSJaegeuk Kim 141901eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 142001eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14212049d4fcSJaegeuk Kim if (!page) 14222049d4fcSJaegeuk Kim goto iput_out; 14232049d4fcSJaegeuk Kim 14242049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14252049d4fcSJaegeuk Kim goto page_out; 14262049d4fcSJaegeuk Kim 14272049d4fcSJaegeuk Kim if (!PageDirty(page)) 14282049d4fcSJaegeuk Kim goto page_out; 14292049d4fcSJaegeuk Kim 14302049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14312049d4fcSJaegeuk Kim goto page_out; 14322049d4fcSJaegeuk Kim 14330f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14342049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 14354d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 14360f3311a8SChao Yu if (ret) 14372049d4fcSJaegeuk Kim set_page_dirty(page); 14382049d4fcSJaegeuk Kim page_out: 14394a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 14402049d4fcSJaegeuk Kim iput_out: 14412049d4fcSJaegeuk Kim iput(inode); 14422049d4fcSJaegeuk Kim } 14432049d4fcSJaegeuk Kim 1444608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1445e05df3b1SJaegeuk Kim { 1446028a63a6SJan Kara pgoff_t index; 1447e05df3b1SJaegeuk Kim struct pagevec pvec; 1448608514deSJaegeuk Kim struct page *last_page = NULL; 1449028a63a6SJan Kara int nr_pages; 145052681375SJaegeuk Kim 145186679820SMel Gorman pagevec_init(&pvec); 145252681375SJaegeuk Kim index = 0; 145352681375SJaegeuk Kim 1454028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 145567fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1456028a63a6SJan Kara int i; 145752681375SJaegeuk Kim 145852681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 145952681375SJaegeuk Kim struct page *page = pvec.pages[i]; 146052681375SJaegeuk Kim 146152681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1462608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 146352681375SJaegeuk Kim pagevec_release(&pvec); 1464608514deSJaegeuk Kim return ERR_PTR(-EIO); 146552681375SJaegeuk Kim } 146652681375SJaegeuk Kim 146752681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 146852681375SJaegeuk Kim continue; 146952681375SJaegeuk Kim if (ino_of_node(page) != ino) 147052681375SJaegeuk Kim continue; 147152681375SJaegeuk Kim 147252681375SJaegeuk Kim lock_page(page); 147352681375SJaegeuk Kim 147452681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 147552681375SJaegeuk Kim continue_unlock: 147652681375SJaegeuk Kim unlock_page(page); 147752681375SJaegeuk Kim continue; 147852681375SJaegeuk Kim } 147952681375SJaegeuk Kim if (ino_of_node(page) != ino) 148052681375SJaegeuk Kim goto continue_unlock; 148152681375SJaegeuk Kim 148252681375SJaegeuk Kim if (!PageDirty(page)) { 148352681375SJaegeuk Kim /* someone wrote it for us */ 148452681375SJaegeuk Kim goto continue_unlock; 148552681375SJaegeuk Kim } 148652681375SJaegeuk Kim 1487608514deSJaegeuk Kim if (last_page) 1488608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1489608514deSJaegeuk Kim 1490608514deSJaegeuk Kim get_page(page); 1491608514deSJaegeuk Kim last_page = page; 1492608514deSJaegeuk Kim unlock_page(page); 1493608514deSJaegeuk Kim } 1494608514deSJaegeuk Kim pagevec_release(&pvec); 1495608514deSJaegeuk Kim cond_resched(); 1496608514deSJaegeuk Kim } 1497608514deSJaegeuk Kim return last_page; 1498608514deSJaegeuk Kim } 1499608514deSJaegeuk Kim 1500d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1501b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 150250fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1503faa24895SJaegeuk Kim { 1504faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1505faa24895SJaegeuk Kim nid_t nid; 1506faa24895SJaegeuk Kim struct node_info ni; 1507faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1508faa24895SJaegeuk Kim .sbi = sbi, 150939d787beSChao Yu .ino = ino_of_node(page), 1510faa24895SJaegeuk Kim .type = NODE, 1511faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1512faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1513faa24895SJaegeuk Kim .page = page, 1514faa24895SJaegeuk Kim .encrypted_page = NULL, 1515d68f735bSJaegeuk Kim .submitted = false, 1516b0af6d49SChao Yu .io_type = io_type, 1517578c6478SYufen Yu .io_wbc = wbc, 1518faa24895SJaegeuk Kim }; 151950fa53ecSChao Yu unsigned int seq; 1520faa24895SJaegeuk Kim 1521faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1522faa24895SJaegeuk Kim 1523868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1524868de613SJaegeuk Kim goto redirty_out; 1525db198ae0SChao Yu 1526faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1527faa24895SJaegeuk Kim goto redirty_out; 1528faa24895SJaegeuk Kim 1529fd8c8cafSChao Yu if (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 1566faa24895SJaegeuk Kim set_page_writeback(page); 156717c50035SJaegeuk Kim ClearPageError(page); 156850fa53ecSChao Yu 156950fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 157050fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 157150fa53ecSChao Yu if (seq_id) 157250fa53ecSChao Yu *seq_id = seq; 157350fa53ecSChao Yu } 157450fa53ecSChao Yu 1575faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 15764d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1577faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1578faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1579faa24895SJaegeuk Kim up_read(&sbi->node_write); 1580faa24895SJaegeuk Kim 1581d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1582bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1583d68f735bSJaegeuk Kim submitted = NULL; 1584d68f735bSJaegeuk Kim } 1585faa24895SJaegeuk Kim 1586faa24895SJaegeuk Kim unlock_page(page); 1587faa24895SJaegeuk Kim 1588d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1589b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1590d68f735bSJaegeuk Kim submitted = NULL; 1591d68f735bSJaegeuk Kim } 1592d68f735bSJaegeuk Kim if (submitted) 1593d68f735bSJaegeuk Kim *submitted = fio.submitted; 1594faa24895SJaegeuk Kim 1595401db79fSYunlong Song if (do_balance) 1596401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1597faa24895SJaegeuk Kim return 0; 1598faa24895SJaegeuk Kim 1599faa24895SJaegeuk Kim redirty_out: 1600faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1601faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1602faa24895SJaegeuk Kim } 1603faa24895SJaegeuk Kim 160448018b4cSChao Yu int f2fs_move_node_page(struct page *node_page, int gc_type) 1605f15194fcSYunlei He { 160648018b4cSChao Yu int err = 0; 160748018b4cSChao Yu 1608f15194fcSYunlei He if (gc_type == FG_GC) { 1609f15194fcSYunlei He struct writeback_control wbc = { 1610f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1611f15194fcSYunlei He .nr_to_write = 1, 1612f15194fcSYunlei He .for_reclaim = 0, 1613f15194fcSYunlei He }; 1614f15194fcSYunlei He 1615bae0ee7aSChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true, true); 16168d64d365SChao Yu 16178d64d365SChao Yu set_page_dirty(node_page); 16188d64d365SChao Yu 161948018b4cSChao Yu if (!clear_page_dirty_for_io(node_page)) { 162048018b4cSChao Yu err = -EAGAIN; 1621f15194fcSYunlei He goto out_page; 162248018b4cSChao Yu } 1623f15194fcSYunlei He 1624f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 162548018b4cSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) { 162648018b4cSChao Yu err = -EAGAIN; 1627f15194fcSYunlei He unlock_page(node_page); 162848018b4cSChao Yu } 1629f15194fcSYunlei He goto release_page; 1630f15194fcSYunlei He } else { 1631f15194fcSYunlei He /* set page dirty and write it */ 1632f15194fcSYunlei He if (!PageWriteback(node_page)) 1633f15194fcSYunlei He set_page_dirty(node_page); 1634f15194fcSYunlei He } 1635f15194fcSYunlei He out_page: 1636f15194fcSYunlei He unlock_page(node_page); 1637f15194fcSYunlei He release_page: 1638f15194fcSYunlei He f2fs_put_page(node_page, 0); 163948018b4cSChao Yu return err; 1640f15194fcSYunlei He } 1641f15194fcSYunlei He 1642faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1643faa24895SJaegeuk Kim struct writeback_control *wbc) 1644faa24895SJaegeuk Kim { 164550fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 164650fa53ecSChao Yu FS_NODE_IO, NULL); 1647faa24895SJaegeuk Kim } 1648faa24895SJaegeuk Kim 16494d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 165050fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 165150fa53ecSChao Yu unsigned int *seq_id) 1652608514deSJaegeuk Kim { 1653028a63a6SJan Kara pgoff_t index; 1654608514deSJaegeuk Kim struct pagevec pvec; 1655608514deSJaegeuk Kim int ret = 0; 1656608514deSJaegeuk Kim struct page *last_page = NULL; 1657608514deSJaegeuk Kim bool marked = false; 165826de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1659028a63a6SJan Kara int nr_pages; 1660bab475c5SChao Yu int nwritten = 0; 1661608514deSJaegeuk Kim 1662608514deSJaegeuk Kim if (atomic) { 1663608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1664608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1665608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1666608514deSJaegeuk Kim } 1667608514deSJaegeuk Kim retry: 166886679820SMel Gorman pagevec_init(&pvec); 1669608514deSJaegeuk Kim index = 0; 1670608514deSJaegeuk Kim 1671028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 167267fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1673028a63a6SJan Kara int i; 1674608514deSJaegeuk Kim 1675608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1676608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1677d68f735bSJaegeuk Kim bool submitted = false; 1678608514deSJaegeuk Kim 1679608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1680608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1681608514deSJaegeuk Kim pagevec_release(&pvec); 16829de69279SChao Yu ret = -EIO; 16839de69279SChao Yu goto out; 1684608514deSJaegeuk Kim } 1685608514deSJaegeuk Kim 1686608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1687608514deSJaegeuk Kim continue; 1688608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1689608514deSJaegeuk Kim continue; 1690608514deSJaegeuk Kim 1691608514deSJaegeuk Kim lock_page(page); 1692608514deSJaegeuk Kim 1693608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1694608514deSJaegeuk Kim continue_unlock: 1695608514deSJaegeuk Kim unlock_page(page); 1696608514deSJaegeuk Kim continue; 1697608514deSJaegeuk Kim } 1698608514deSJaegeuk Kim if (ino_of_node(page) != ino) 169952681375SJaegeuk Kim goto continue_unlock; 170052681375SJaegeuk Kim 1701608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1702608514deSJaegeuk Kim /* someone wrote it for us */ 1703608514deSJaegeuk Kim goto continue_unlock; 1704608514deSJaegeuk Kim } 1705608514deSJaegeuk Kim 1706bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1707608514deSJaegeuk Kim 1708d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1709d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1710d29fd172SJaegeuk Kim 1711608514deSJaegeuk Kim if (!atomic || page == last_page) { 171252681375SJaegeuk Kim set_fsync_mark(page, 1); 171326de9b11SJaegeuk Kim if (IS_INODE(page)) { 171426de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 171526de9b11SJaegeuk Kim FI_DIRTY_INODE)) 17164d57b86dSChao Yu f2fs_update_inode(inode, page); 171752681375SJaegeuk Kim set_dentry_mark(page, 17184d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 171926de9b11SJaegeuk Kim } 1720608514deSJaegeuk Kim /* may be written by other thread */ 1721608514deSJaegeuk Kim if (!PageDirty(page)) 1722608514deSJaegeuk Kim set_page_dirty(page); 1723608514deSJaegeuk Kim } 1724608514deSJaegeuk Kim 1725608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1726608514deSJaegeuk Kim goto continue_unlock; 172752681375SJaegeuk Kim 1728e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1729d68f735bSJaegeuk Kim page == last_page, 1730b0af6d49SChao Yu &submitted, wbc, true, 173150fa53ecSChao Yu FS_NODE_IO, seq_id); 1732c267ec15SJaegeuk Kim if (ret) { 173352681375SJaegeuk Kim unlock_page(page); 1734608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1735608514deSJaegeuk Kim break; 1736d68f735bSJaegeuk Kim } else if (submitted) { 1737bab475c5SChao Yu nwritten++; 1738608514deSJaegeuk Kim } 17393f5f4959SChao Yu 1740608514deSJaegeuk Kim if (page == last_page) { 1741608514deSJaegeuk Kim f2fs_put_page(page, 0); 1742608514deSJaegeuk Kim marked = true; 174352681375SJaegeuk Kim break; 174452681375SJaegeuk Kim } 1745c267ec15SJaegeuk Kim } 174652681375SJaegeuk Kim pagevec_release(&pvec); 174752681375SJaegeuk Kim cond_resched(); 174852681375SJaegeuk Kim 1749608514deSJaegeuk Kim if (ret || marked) 175052681375SJaegeuk Kim break; 175152681375SJaegeuk Kim } 1752608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1753608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1754608514deSJaegeuk Kim "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 17684d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 17694d57b86dSChao Yu struct writeback_control *wbc, 1770b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 177152681375SJaegeuk Kim { 1772028a63a6SJan Kara pgoff_t index; 177352681375SJaegeuk Kim struct pagevec pvec; 177452681375SJaegeuk Kim int step = 0; 177512bb0a8fSJaegeuk Kim int nwritten = 0; 17763f5f4959SChao Yu int ret = 0; 1777c29fd0c0SChao Yu int nr_pages, done = 0; 1778e05df3b1SJaegeuk Kim 177986679820SMel Gorman pagevec_init(&pvec); 1780e05df3b1SJaegeuk Kim 1781e05df3b1SJaegeuk Kim next_step: 1782e05df3b1SJaegeuk Kim index = 0; 1783e05df3b1SJaegeuk Kim 1784c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1785c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1786028a63a6SJan Kara int i; 1787e05df3b1SJaegeuk Kim 1788e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1789e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1790d68f735bSJaegeuk Kim bool submitted = false; 1791e05df3b1SJaegeuk Kim 1792c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1793c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1794c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1795c29fd0c0SChao Yu done = 1; 1796c29fd0c0SChao Yu break; 1797c29fd0c0SChao Yu } 1798c29fd0c0SChao Yu 1799e05df3b1SJaegeuk Kim /* 1800e05df3b1SJaegeuk Kim * flushing sequence with step: 1801e05df3b1SJaegeuk Kim * 0. indirect nodes 1802e05df3b1SJaegeuk Kim * 1. dentry dnodes 1803e05df3b1SJaegeuk Kim * 2. file dnodes 1804e05df3b1SJaegeuk Kim */ 1805e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1806e05df3b1SJaegeuk Kim continue; 1807e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1808e05df3b1SJaegeuk Kim is_cold_node(page))) 1809e05df3b1SJaegeuk Kim continue; 1810e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1811e05df3b1SJaegeuk Kim !is_cold_node(page))) 1812e05df3b1SJaegeuk Kim continue; 18139a4cbc9eSChao Yu lock_node: 18144b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 18154b270a8cSChao Yu lock_page(page); 18164b270a8cSChao Yu else if (!trylock_page(page)) 1817e05df3b1SJaegeuk Kim continue; 1818e05df3b1SJaegeuk Kim 18194ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1820e05df3b1SJaegeuk Kim continue_unlock: 1821e05df3b1SJaegeuk Kim unlock_page(page); 1822e05df3b1SJaegeuk Kim continue; 1823e05df3b1SJaegeuk Kim } 1824e05df3b1SJaegeuk Kim 1825e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1826e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1827e05df3b1SJaegeuk Kim goto continue_unlock; 1828e05df3b1SJaegeuk Kim } 1829e05df3b1SJaegeuk Kim 18302049d4fcSJaegeuk Kim /* flush inline_data */ 183152681375SJaegeuk Kim if (is_inline_node(page)) { 18322049d4fcSJaegeuk Kim clear_inline_node(page); 18332049d4fcSJaegeuk Kim unlock_page(page); 18342049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 18359a4cbc9eSChao Yu goto lock_node; 18362049d4fcSJaegeuk Kim } 18372049d4fcSJaegeuk Kim 1838bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, true); 1839fa3d2bdfSJaegeuk Kim 1840e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1841e05df3b1SJaegeuk Kim goto continue_unlock; 1842e05df3b1SJaegeuk Kim 1843e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1844e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 184552746519SJaegeuk Kim 1846401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 184750fa53ecSChao Yu wbc, do_balance, io_type, NULL); 1848d68f735bSJaegeuk Kim if (ret) 184952746519SJaegeuk Kim unlock_page(page); 1850d68f735bSJaegeuk Kim else if (submitted) 18513f5f4959SChao Yu nwritten++; 1852e05df3b1SJaegeuk Kim 1853e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1854e05df3b1SJaegeuk Kim break; 1855e05df3b1SJaegeuk Kim } 1856e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1857e05df3b1SJaegeuk Kim cond_resched(); 1858e05df3b1SJaegeuk Kim 1859e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1860e05df3b1SJaegeuk Kim step = 2; 1861e05df3b1SJaegeuk Kim break; 1862e05df3b1SJaegeuk Kim } 1863e05df3b1SJaegeuk Kim } 1864e05df3b1SJaegeuk Kim 1865e05df3b1SJaegeuk Kim if (step < 2) { 1866fd8c8cafSChao Yu if (wbc->sync_mode == WB_SYNC_NONE && step == 1) 1867fd8c8cafSChao Yu goto out; 1868e05df3b1SJaegeuk Kim step++; 1869e05df3b1SJaegeuk Kim goto next_step; 1870e05df3b1SJaegeuk Kim } 1871fd8c8cafSChao Yu out: 18723f5f4959SChao Yu if (nwritten) 1873b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1874db198ae0SChao Yu 1875db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1876db198ae0SChao Yu return -EIO; 18773f5f4959SChao Yu return ret; 1878e05df3b1SJaegeuk Kim } 1879e05df3b1SJaegeuk Kim 188050fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 188150fa53ecSChao Yu unsigned int seq_id) 1882cfe58f9dSJaegeuk Kim { 188350fa53ecSChao Yu struct fsync_node_entry *fn; 188450fa53ecSChao Yu struct page *page; 188550fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 188650fa53ecSChao Yu unsigned long flags; 188750fa53ecSChao Yu unsigned int cur_seq_id = 0; 1888280db3c8SMiklos Szeredi int ret2, ret = 0; 1889cfe58f9dSJaegeuk Kim 189050fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 189150fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 189250fa53ecSChao Yu if (list_empty(head)) { 189350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 189450fa53ecSChao Yu break; 189550fa53ecSChao Yu } 189650fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 189750fa53ecSChao Yu if (fn->seq_id > seq_id) { 189850fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 189950fa53ecSChao Yu break; 190050fa53ecSChao Yu } 190150fa53ecSChao Yu cur_seq_id = fn->seq_id; 190250fa53ecSChao Yu page = fn->page; 190350fa53ecSChao Yu get_page(page); 190450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 19054ef51a8fSJaegeuk Kim 1906bae0ee7aSChao Yu f2fs_wait_on_page_writeback(page, NODE, true, false); 1907cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1908cfe58f9dSJaegeuk Kim ret = -EIO; 190950fa53ecSChao Yu 191050fa53ecSChao Yu put_page(page); 191150fa53ecSChao Yu 191250fa53ecSChao Yu if (ret) 191350fa53ecSChao Yu break; 1914cfe58f9dSJaegeuk Kim } 1915cfe58f9dSJaegeuk Kim 1916280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1917cfe58f9dSJaegeuk Kim if (!ret) 1918cfe58f9dSJaegeuk Kim ret = ret2; 191950fa53ecSChao Yu 1920cfe58f9dSJaegeuk Kim return ret; 1921cfe58f9dSJaegeuk Kim } 1922cfe58f9dSJaegeuk Kim 1923e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1924e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1925e05df3b1SJaegeuk Kim { 19264081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 19279dfa1bafSJaegeuk Kim struct blk_plug plug; 192850c8cdb3SJaegeuk Kim long diff; 1929e05df3b1SJaegeuk Kim 19300771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 19310771fcc7SChao Yu goto skip_write; 19320771fcc7SChao Yu 19334660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 19344660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1935e05df3b1SJaegeuk Kim 1936a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 1937812a9597SJaegeuk Kim if (wbc->sync_mode != WB_SYNC_ALL && 1938812a9597SJaegeuk Kim get_pages(sbi, F2FS_DIRTY_NODES) < 1939812a9597SJaegeuk Kim nr_pages_to_skip(sbi, NODE)) 1940d3baf95dSJaegeuk Kim goto skip_write; 1941a7fdffbdSJaegeuk Kim 1942c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1943c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1944c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1945c29fd0c0SChao Yu goto skip_write; 1946c29fd0c0SChao Yu 1947d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1948d31c7c3fSYunlei He 194950c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 19509dfa1bafSJaegeuk Kim blk_start_plug(&plug); 19514d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 19529dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 195350c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1954c29fd0c0SChao Yu 1955c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1956c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 1957e05df3b1SJaegeuk Kim return 0; 1958d3baf95dSJaegeuk Kim 1959d3baf95dSJaegeuk Kim skip_write: 1960d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1961d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1962d3baf95dSJaegeuk Kim return 0; 1963e05df3b1SJaegeuk Kim } 1964e05df3b1SJaegeuk Kim 1965e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1966e05df3b1SJaegeuk Kim { 196726c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 196826c6b887SJaegeuk Kim 1969237c0790SJaegeuk Kim if (!PageUptodate(page)) 1970e05df3b1SJaegeuk Kim SetPageUptodate(page); 197154c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 197254c55c4eSWeichao Guo if (IS_INODE(page)) 197354c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 197454c55c4eSWeichao Guo #endif 1975e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1976b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 19774081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1978240a5915SChao Yu f2fs_set_page_private(page, 0); 19799e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1980e05df3b1SJaegeuk Kim return 1; 1981e05df3b1SJaegeuk Kim } 1982e05df3b1SJaegeuk Kim return 0; 1983e05df3b1SJaegeuk Kim } 1984e05df3b1SJaegeuk Kim 19850a8165d7SJaegeuk Kim /* 1986e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1987e05df3b1SJaegeuk Kim */ 1988e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1989e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1990e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1991e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1992487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1993487261f3SChao Yu .releasepage = f2fs_release_page, 19945b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 19955b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 19965b7a487cSWeichao Guo #endif 1997e05df3b1SJaegeuk Kim }; 1998e05df3b1SJaegeuk Kim 19998a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 20008a7ed66aSJaegeuk Kim nid_t n) 2001e05df3b1SJaegeuk Kim { 20028a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 20033aa770a9SNamjae Jeon } 2004e05df3b1SJaegeuk Kim 20059a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 2006a0761f63SFan Li struct free_nid *i, enum nid_state state) 2007e05df3b1SJaegeuk Kim { 2008b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2009b8559dc2SChao Yu 2010eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 2011eb0aa4b8SJaegeuk Kim if (err) 2012eb0aa4b8SJaegeuk Kim return err; 2013eb0aa4b8SJaegeuk Kim 20149a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20159a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 20169a4ffdf5SChao Yu if (state == FREE_NID) 20179a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 2018eb0aa4b8SJaegeuk Kim return 0; 2019b8559dc2SChao Yu } 2020b8559dc2SChao Yu 20219a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2022a0761f63SFan Li struct free_nid *i, enum nid_state state) 2023b8559dc2SChao Yu { 2024b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2025b8559dc2SChao Yu 20269a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20279a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 20289a4ffdf5SChao Yu if (state == FREE_NID) 2029e05df3b1SJaegeuk Kim list_del(&i->list); 20308a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2031e05df3b1SJaegeuk Kim } 2032e05df3b1SJaegeuk Kim 2033a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2034a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2035a0761f63SFan Li { 2036a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2037a0761f63SFan Li 2038a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2039a0761f63SFan Li i->state = dst_state; 2040a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2041a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2042a0761f63SFan Li 2043a0761f63SFan Li switch (dst_state) { 2044a0761f63SFan Li case PREALLOC_NID: 2045a0761f63SFan Li list_del(&i->list); 2046a0761f63SFan Li break; 2047a0761f63SFan Li case FREE_NID: 2048a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2049a0761f63SFan Li break; 2050a0761f63SFan Li default: 2051a0761f63SFan Li BUG_ON(1); 2052a0761f63SFan Li } 2053a0761f63SFan Li } 2054a0761f63SFan Li 20555921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 20565921aaa1SLiFan bool set, bool build) 20575921aaa1SLiFan { 20585921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 20595921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 20605921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 20615921aaa1SLiFan 20625921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 20635921aaa1SLiFan return; 20645921aaa1SLiFan 20655921aaa1SLiFan if (set) { 20665921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 20675921aaa1SLiFan return; 20685921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 20695921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 20705921aaa1SLiFan } else { 20715921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 20725921aaa1SLiFan return; 20735921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 20745921aaa1SLiFan if (!build) 20755921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 20765921aaa1SLiFan } 20775921aaa1SLiFan } 20785921aaa1SLiFan 20794ac91242SChao Yu /* return if the nid is recognized as free */ 20805921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 20815921aaa1SLiFan nid_t nid, bool build, bool update) 2082e05df3b1SJaegeuk Kim { 20836fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 208430a61ddfSChao Yu struct free_nid *i, *e; 208559bbd474SJaegeuk Kim struct nat_entry *ne; 208630a61ddfSChao Yu int err = -EINVAL; 208730a61ddfSChao Yu bool ret = false; 20889198acebSJaegeuk Kim 20899198acebSJaegeuk Kim /* 0 nid should not be used */ 2090cfb271d4SChao Yu if (unlikely(nid == 0)) 20914ac91242SChao Yu return false; 209259bbd474SJaegeuk Kim 2093626bcf2bSChao Yu if (unlikely(f2fs_check_nid_range(sbi, nid))) 2094626bcf2bSChao Yu return false; 2095626bcf2bSChao Yu 20967bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 2097e05df3b1SJaegeuk Kim i->nid = nid; 20989a4ffdf5SChao Yu i->state = FREE_NID; 2099e05df3b1SJaegeuk Kim 21005921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2101769ec6e5SJaegeuk Kim 2102b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 210330a61ddfSChao Yu 210430a61ddfSChao Yu if (build) { 210530a61ddfSChao Yu /* 210630a61ddfSChao Yu * Thread A Thread B 210730a61ddfSChao Yu * - f2fs_create 210830a61ddfSChao Yu * - f2fs_new_inode 21094d57b86dSChao Yu * - f2fs_alloc_nid 21109a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 211130a61ddfSChao Yu * - f2fs_balance_fs_bg 21124d57b86dSChao Yu * - f2fs_build_free_nids 21134d57b86dSChao Yu * - __f2fs_build_free_nids 211430a61ddfSChao Yu * - scan_nat_page 211530a61ddfSChao Yu * - add_free_nid 211630a61ddfSChao Yu * - __lookup_nat_cache 211730a61ddfSChao Yu * - f2fs_add_link 21184d57b86dSChao Yu * - f2fs_init_inode_metadata 21194d57b86dSChao Yu * - f2fs_new_inode_page 21204d57b86dSChao Yu * - f2fs_new_node_page 212130a61ddfSChao Yu * - set_node_addr 21224d57b86dSChao Yu * - f2fs_alloc_nid_done 21239a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 21249a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 212530a61ddfSChao Yu */ 212630a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 212730a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 212830a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 212930a61ddfSChao Yu goto err_out; 213030a61ddfSChao Yu 213130a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 213230a61ddfSChao Yu if (e) { 21339a4ffdf5SChao Yu if (e->state == FREE_NID) 213430a61ddfSChao Yu ret = true; 213530a61ddfSChao Yu goto err_out; 213630a61ddfSChao Yu } 213730a61ddfSChao Yu } 213830a61ddfSChao Yu ret = true; 2139a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 214030a61ddfSChao Yu err_out: 21415921aaa1SLiFan if (update) { 21425921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 21435921aaa1SLiFan if (!build) 21445921aaa1SLiFan nm_i->available_nids++; 21455921aaa1SLiFan } 2146b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2147769ec6e5SJaegeuk Kim radix_tree_preload_end(); 21485921aaa1SLiFan 214930a61ddfSChao Yu if (err) 2150e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 215130a61ddfSChao Yu return ret; 2152e05df3b1SJaegeuk Kim } 2153e05df3b1SJaegeuk Kim 2154b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2155e05df3b1SJaegeuk Kim { 2156b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2157e05df3b1SJaegeuk Kim struct free_nid *i; 2158cf0ee0f0SChao Yu bool need_free = false; 2159cf0ee0f0SChao Yu 2160b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21618a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 21629a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2163a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2164cf0ee0f0SChao Yu need_free = true; 2165e05df3b1SJaegeuk Kim } 2166b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2167cf0ee0f0SChao Yu 2168cf0ee0f0SChao Yu if (need_free) 2169cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2170e05df3b1SJaegeuk Kim } 2171e05df3b1SJaegeuk Kim 2172e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2173e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2174e05df3b1SJaegeuk Kim { 21756fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2176e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2177e05df3b1SJaegeuk Kim block_t blk_addr; 21784ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2179e05df3b1SJaegeuk Kim int i; 2180e05df3b1SJaegeuk Kim 218123380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 21824ac91242SChao Yu 2183e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2184e05df3b1SJaegeuk Kim 2185e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2186cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 218704431c44SJaegeuk Kim break; 218823d38844SHaicheng Li 2189e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2190e2374015SChao Yu 2191e2374015SChao Yu if (blk_addr == NEW_ADDR) 2192e2374015SChao Yu return -EINVAL; 2193e2374015SChao Yu 21945921aaa1SLiFan if (blk_addr == NULL_ADDR) { 21955921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 21965921aaa1SLiFan } else { 2197346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 21985921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2199346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2200e05df3b1SJaegeuk Kim } 2201e05df3b1SJaegeuk Kim } 2202e2374015SChao Yu 2203e2374015SChao Yu return 0; 22045921aaa1SLiFan } 2205e05df3b1SJaegeuk Kim 22062fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 22074ac91242SChao Yu { 22084ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 22094ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 22102fbaa25fSChao Yu int i; 22114ac91242SChao Yu 22124ac91242SChao Yu down_read(&curseg->journal_rwsem); 22134ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 22144ac91242SChao Yu block_t addr; 22154ac91242SChao Yu nid_t nid; 22164ac91242SChao Yu 22174ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 22184ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 22194ac91242SChao Yu if (addr == NULL_ADDR) 22205921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22214ac91242SChao Yu else 22224ac91242SChao Yu remove_free_nid(sbi, nid); 22234ac91242SChao Yu } 22244ac91242SChao Yu up_read(&curseg->journal_rwsem); 22252fbaa25fSChao Yu } 22262fbaa25fSChao Yu 2227e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 22284ac91242SChao Yu { 22294ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 22304ac91242SChao Yu unsigned int i, idx; 223197456574SFan Li nid_t nid; 22324ac91242SChao Yu 22334ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 22344ac91242SChao Yu 22354ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 22364ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 22374ac91242SChao Yu continue; 22384ac91242SChao Yu if (!nm_i->free_nid_count[i]) 22394ac91242SChao Yu continue; 22404ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 224197456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 224297456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 224397456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 224497456574SFan Li break; 22454ac91242SChao Yu 22464ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 22475921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22484ac91242SChao Yu 22499a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 22504ac91242SChao Yu goto out; 22514ac91242SChao Yu } 22524ac91242SChao Yu } 22534ac91242SChao Yu out: 22542fbaa25fSChao Yu scan_curseg_cache(sbi); 22554ac91242SChao Yu 22564ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 22574ac91242SChao Yu } 22584ac91242SChao Yu 2259e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 22604d57b86dSChao Yu bool sync, bool mount) 2261e05df3b1SJaegeuk Kim { 2262e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2263e2374015SChao Yu int i = 0, ret; 226455008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2265e05df3b1SJaegeuk Kim 2266e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2267e9cdd307SYunlei He nid = 0; 2268e9cdd307SYunlei He 226955008d84SJaegeuk Kim /* Enough entries */ 22709a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2271e2374015SChao Yu return 0; 2272e05df3b1SJaegeuk Kim 22734d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2274e2374015SChao Yu return 0; 2275e05df3b1SJaegeuk Kim 22764ac91242SChao Yu if (!mount) { 22774ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 22784ac91242SChao Yu scan_free_nid_bits(sbi); 22794ac91242SChao Yu 228074986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2281e2374015SChao Yu return 0; 228222ad0b6aSJaegeuk Kim } 228322ad0b6aSJaegeuk Kim 228455008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 22854d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 228626879fb1SChao Yu META_NAT, true); 2287e05df3b1SJaegeuk Kim 2288b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2289a5131193SJaegeuk Kim 2290e05df3b1SJaegeuk Kim while (1) { 229166e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 229266e83361SYunlei He nm_i->nat_block_bitmap)) { 2293e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2294e05df3b1SJaegeuk Kim 2295edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2296edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2297edc55aafSJaegeuk Kim } else { 2298e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2299e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2300edc55aafSJaegeuk Kim } 2301e2374015SChao Yu 2302e2374015SChao Yu if (ret) { 2303e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2304e2374015SChao Yu f2fs_bug_on(sbi, !mount); 2305e2374015SChao Yu f2fs_msg(sbi->sb, KERN_ERR, 2306e2374015SChao Yu "NAT is corrupt, run fsck to fix it"); 2307edc55aafSJaegeuk Kim return ret; 2308e2374015SChao Yu } 230966e83361SYunlei He } 2310e05df3b1SJaegeuk Kim 2311e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2312cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2313e05df3b1SJaegeuk Kim nid = 0; 231455008d84SJaegeuk Kim 2315a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2316e05df3b1SJaegeuk Kim break; 2317e05df3b1SJaegeuk Kim } 2318e05df3b1SJaegeuk Kim 231955008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 232055008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2321e05df3b1SJaegeuk Kim 2322e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 23232fbaa25fSChao Yu scan_curseg_cache(sbi); 2324dfc08a12SChao Yu 2325b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23262db2388fSChao Yu 23274d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2328ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2329e2374015SChao Yu 2330e2374015SChao Yu return 0; 2331e05df3b1SJaegeuk Kim } 2332e05df3b1SJaegeuk Kim 2333e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 23342411cf5bSChao Yu { 2335e2374015SChao Yu int ret; 2336e2374015SChao Yu 23372411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2338e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 23392411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2340e2374015SChao Yu 2341e2374015SChao Yu return ret; 23422411cf5bSChao Yu } 23432411cf5bSChao Yu 2344e05df3b1SJaegeuk Kim /* 2345e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2346e05df3b1SJaegeuk Kim * from second parameter of this function. 2347e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2348e05df3b1SJaegeuk Kim */ 23494d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2350e05df3b1SJaegeuk Kim { 2351e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2352e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2353e05df3b1SJaegeuk Kim retry: 235455523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 235555523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2356cb78942bSJaegeuk Kim return false; 235755523519SChao Yu } 23587fa750a1SArnd Bergmann 2359b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2360e05df3b1SJaegeuk Kim 236104d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 236204d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 236304d47e67SChao Yu return false; 236404d47e67SChao Yu } 2365e05df3b1SJaegeuk Kim 23664d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 23674d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 23689a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 23699a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2370b8559dc2SChao Yu struct free_nid, list); 2371e05df3b1SJaegeuk Kim *nid = i->nid; 2372b8559dc2SChao Yu 2373a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 237404d47e67SChao Yu nm_i->available_nids--; 23754ac91242SChao Yu 2376346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 23774ac91242SChao Yu 2378b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2379e05df3b1SJaegeuk Kim return true; 2380e05df3b1SJaegeuk Kim } 2381b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 238255008d84SJaegeuk Kim 238355008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2384f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 238555008d84SJaegeuk Kim goto retry; 2386f84262b0SJaegeuk Kim return false; 238755008d84SJaegeuk Kim } 2388e05df3b1SJaegeuk Kim 23890a8165d7SJaegeuk Kim /* 23904d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2391e05df3b1SJaegeuk Kim */ 23924d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2393e05df3b1SJaegeuk Kim { 2394e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2395e05df3b1SJaegeuk Kim struct free_nid *i; 2396e05df3b1SJaegeuk Kim 2397b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23988a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2399b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2400a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2401b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2402cf0ee0f0SChao Yu 2403cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2404e05df3b1SJaegeuk Kim } 2405e05df3b1SJaegeuk Kim 24060a8165d7SJaegeuk Kim /* 24074d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2408e05df3b1SJaegeuk Kim */ 24094d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2410e05df3b1SJaegeuk Kim { 241149952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 241249952fa1SJaegeuk Kim struct free_nid *i; 2413cf0ee0f0SChao Yu bool need_free = false; 241449952fa1SJaegeuk Kim 241565985d93SJaegeuk Kim if (!nid) 241665985d93SJaegeuk Kim return; 241765985d93SJaegeuk Kim 2418b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24198a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2420b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2421b8559dc2SChao Yu 24224d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2423a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2424cf0ee0f0SChao Yu need_free = true; 242595630cbaSHaicheng Li } else { 2426a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 242795630cbaSHaicheng Li } 242804d47e67SChao Yu 242904d47e67SChao Yu nm_i->available_nids++; 243004d47e67SChao Yu 2431346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 24324ac91242SChao Yu 2433b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2434cf0ee0f0SChao Yu 2435cf0ee0f0SChao Yu if (need_free) 2436cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2437e05df3b1SJaegeuk Kim } 2438e05df3b1SJaegeuk Kim 24394d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 244031696580SChao Yu { 244131696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 244231696580SChao Yu struct free_nid *i, *next; 244331696580SChao Yu int nr = nr_shrink; 244431696580SChao Yu 24459a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2446ad4edb83SJaegeuk Kim return 0; 2447ad4edb83SJaegeuk Kim 244831696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 244931696580SChao Yu return 0; 245031696580SChao Yu 2451b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24529a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2453b8559dc2SChao Yu if (nr_shrink <= 0 || 24549a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 245531696580SChao Yu break; 2456b8559dc2SChao Yu 2457a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 245831696580SChao Yu kmem_cache_free(free_nid_slab, i); 245931696580SChao Yu nr_shrink--; 246031696580SChao Yu } 2461b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 246231696580SChao Yu mutex_unlock(&nm_i->build_lock); 246331696580SChao Yu 246431696580SChao Yu return nr - nr_shrink; 246531696580SChao Yu } 246631696580SChao Yu 24674d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 246828cdce04SChao Yu { 246928cdce04SChao Yu void *src_addr, *dst_addr; 247028cdce04SChao Yu size_t inline_size; 247128cdce04SChao Yu struct page *ipage; 247228cdce04SChao Yu struct f2fs_inode *ri; 247328cdce04SChao Yu 24744d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 24759850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 247628cdce04SChao Yu 2477e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 24781eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 24791eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 24801eca05aaSYunlei He } else { 248191942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2482e3b4d43fSJaegeuk Kim goto update_inode; 2483e3b4d43fSJaegeuk Kim } 2484e3b4d43fSJaegeuk Kim 24856afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 24866afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 248728cdce04SChao Yu inline_size = inline_xattr_size(inode); 248828cdce04SChao Yu 2489bae0ee7aSChao Yu f2fs_wait_on_page_writeback(ipage, NODE, true, true); 249028cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2491e3b4d43fSJaegeuk Kim update_inode: 24924d57b86dSChao Yu f2fs_update_inode(inode, ipage); 249328cdce04SChao Yu f2fs_put_page(ipage, 1); 249428cdce04SChao Yu } 249528cdce04SChao Yu 24964d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2497abb2366cSJaegeuk Kim { 24984081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2499abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 250087905682SYunlei He nid_t new_xnid; 250187905682SYunlei He struct dnode_of_data dn; 2502abb2366cSJaegeuk Kim struct node_info ni; 2503d260081cSChao Yu struct page *xpage; 25047735730dSChao Yu int err; 2505abb2366cSJaegeuk Kim 2506abb2366cSJaegeuk Kim if (!prev_xnid) 2507abb2366cSJaegeuk Kim goto recover_xnid; 2508abb2366cSJaegeuk Kim 2509d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 25107735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 25117735730dSChao Yu if (err) 25127735730dSChao Yu return err; 25137735730dSChao Yu 25144d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2515000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2516479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2517abb2366cSJaegeuk Kim 2518abb2366cSJaegeuk Kim recover_xnid: 2519d260081cSChao Yu /* 2: update xattr nid in inode */ 25204d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 252187905682SYunlei He return -ENOSPC; 252287905682SYunlei He 252387905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 25244d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 252587905682SYunlei He if (IS_ERR(xpage)) { 25264d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 252787905682SYunlei He return PTR_ERR(xpage); 252887905682SYunlei He } 252987905682SYunlei He 25304d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 25314d57b86dSChao Yu f2fs_update_inode_page(inode); 2532abb2366cSJaegeuk Kim 2533d260081cSChao Yu /* 3: update and set xattr node page dirty */ 253487905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2535d260081cSChao Yu 2536d260081cSChao Yu set_page_dirty(xpage); 2537d260081cSChao Yu f2fs_put_page(xpage, 1); 2538abb2366cSJaegeuk Kim 2539d260081cSChao Yu return 0; 2540abb2366cSJaegeuk Kim } 2541abb2366cSJaegeuk Kim 25424d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2543e05df3b1SJaegeuk Kim { 254458bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2545e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2546e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2547e05df3b1SJaegeuk Kim struct page *ipage; 25487735730dSChao Yu int err; 2549e05df3b1SJaegeuk Kim 25507735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 25517735730dSChao Yu if (err) 25527735730dSChao Yu return err; 2553e8271fa3SJaegeuk Kim 2554e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2555e8271fa3SJaegeuk Kim return -EINVAL; 2556e8ea9b3dSJaegeuk Kim retry: 2557300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2558e8ea9b3dSJaegeuk Kim if (!ipage) { 2559e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2560e8ea9b3dSJaegeuk Kim goto retry; 2561e8ea9b3dSJaegeuk Kim } 2562e05df3b1SJaegeuk Kim 2563e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2564b8559dc2SChao Yu remove_free_nid(sbi, ino); 2565e05df3b1SJaegeuk Kim 2566237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2567e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2568e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2569ef2a0071SChao Yu set_cold_node(ipage, false); 2570e05df3b1SJaegeuk Kim 257158bfaf44SJaegeuk Kim src = F2FS_INODE(page); 257258bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2573e05df3b1SJaegeuk Kim 257458bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 257558bfaf44SJaegeuk Kim dst->i_size = 0; 257658bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 257758bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 257858bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 25797a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 25805c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 25817a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 25826afc662eSChao Yu 25837beb01f7SChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi) && 25846afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25856afc662eSChao Yu i_inline_xattr_size)) 25866afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 25876afc662eSChao Yu 25887beb01f7SChao Yu if (f2fs_sb_has_project_quota(sbi) && 25895c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25905c57132eSChao Yu i_projid)) 25915c57132eSChao Yu dst->i_projid = src->i_projid; 25925cd1f387SChao Yu 25937beb01f7SChao Yu if (f2fs_sb_has_inode_crtime(sbi) && 25945cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25955cd1f387SChao Yu i_crtime_nsec)) { 25965cd1f387SChao Yu dst->i_crtime = src->i_crtime; 25975cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 25985cd1f387SChao Yu } 25995c57132eSChao Yu } 2600e05df3b1SJaegeuk Kim 2601e05df3b1SJaegeuk Kim new_ni = old_ni; 2602e05df3b1SJaegeuk Kim new_ni.ino = ino; 2603e05df3b1SJaegeuk Kim 26040abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 260565e5cd0aSJaegeuk Kim WARN_ON(1); 2606479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2607e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2608617deb8cSJaegeuk Kim set_page_dirty(ipage); 2609e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2610e05df3b1SJaegeuk Kim return 0; 2611e05df3b1SJaegeuk Kim } 2612e05df3b1SJaegeuk Kim 26137735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2614e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2615e05df3b1SJaegeuk Kim { 2616e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2617e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2618e05df3b1SJaegeuk Kim block_t addr; 26199ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2620e05df3b1SJaegeuk Kim 2621e05df3b1SJaegeuk Kim /* scan the node segment */ 2622e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2623e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2624e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2625e05df3b1SJaegeuk Kim 26269ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2627664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2628393ff91fSJaegeuk Kim 26299af0ff1cSChao Yu /* readahead node pages */ 26304d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 26319af0ff1cSChao Yu 26329ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 26334d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2634393ff91fSJaegeuk Kim 26357735730dSChao Yu if (IS_ERR(page)) 26367735730dSChao Yu return PTR_ERR(page); 26377735730dSChao Yu 26389ecf4b80SChao Yu rn = F2FS_NODE(page); 2639393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2640393ff91fSJaegeuk Kim sum_entry->version = 0; 2641393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 26429af0ff1cSChao Yu sum_entry++; 26439ecf4b80SChao Yu f2fs_put_page(page, 1); 26449af0ff1cSChao Yu } 2645bac4eef6SChao Yu 26469ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2647bac4eef6SChao Yu addr + nrpages); 26489af0ff1cSChao Yu } 26497735730dSChao Yu return 0; 2650e05df3b1SJaegeuk Kim } 2651e05df3b1SJaegeuk Kim 2652aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2653e05df3b1SJaegeuk Kim { 2654e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2655e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2656b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2657e05df3b1SJaegeuk Kim int i; 2658e05df3b1SJaegeuk Kim 2659b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2660dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2661e05df3b1SJaegeuk Kim struct nat_entry *ne; 2662e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2663dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2664e05df3b1SJaegeuk Kim 2665dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 26669be32d72SJaegeuk Kim 2667e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2668e05df3b1SJaegeuk Kim if (!ne) { 266912f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 267012f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 26719be32d72SJaegeuk Kim } 267204d47e67SChao Yu 267304d47e67SChao Yu /* 267404d47e67SChao Yu * if a free nat in journal has not been used after last 267504d47e67SChao Yu * checkpoint, we should remove it from available nids, 267604d47e67SChao Yu * since later we will add it again. 267704d47e67SChao Yu */ 267804d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 267904d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 268004d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 268104d47e67SChao Yu nm_i->available_nids--; 268204d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 268304d47e67SChao Yu } 268404d47e67SChao Yu 2685e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2686e05df3b1SJaegeuk Kim } 2687dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2688b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2689e05df3b1SJaegeuk Kim } 2690e05df3b1SJaegeuk Kim 2691309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2692309cc2b6SJaegeuk Kim struct list_head *head, int max) 2693e05df3b1SJaegeuk Kim { 2694309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2695e05df3b1SJaegeuk Kim 2696309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2697309cc2b6SJaegeuk Kim goto add_out; 2698e05df3b1SJaegeuk Kim 2699309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2700309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2701309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2702309cc2b6SJaegeuk Kim return; 2703309cc2b6SJaegeuk Kim } 2704309cc2b6SJaegeuk Kim } 2705309cc2b6SJaegeuk Kim add_out: 2706309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2707aec71382SChao Yu } 2708aec71382SChao Yu 27099f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 271022ad0b6aSJaegeuk Kim struct page *page) 271122ad0b6aSJaegeuk Kim { 271222ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 271322ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 271422ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 271522ad0b6aSJaegeuk Kim int valid = 0; 271637a0ab2aSFan Li int i = 0; 271722ad0b6aSJaegeuk Kim 271822ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 271922ad0b6aSJaegeuk Kim return; 272022ad0b6aSJaegeuk Kim 272137a0ab2aSFan Li if (nat_index == 0) { 272237a0ab2aSFan Li valid = 1; 272337a0ab2aSFan Li i = 1; 272437a0ab2aSFan Li } 272537a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 272637a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 272722ad0b6aSJaegeuk Kim valid++; 272822ad0b6aSJaegeuk Kim } 272922ad0b6aSJaegeuk Kim if (valid == 0) { 273023380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 273123380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 273222ad0b6aSJaegeuk Kim return; 273322ad0b6aSJaegeuk Kim } 273422ad0b6aSJaegeuk Kim 273523380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 273622ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 273723380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 273822ad0b6aSJaegeuk Kim else 273923380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 274022ad0b6aSJaegeuk Kim } 274122ad0b6aSJaegeuk Kim 2742edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 274322ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2744309cc2b6SJaegeuk Kim { 2745309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2746b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2747309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2748309cc2b6SJaegeuk Kim bool to_journal = true; 2749309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2750309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2751309cc2b6SJaegeuk Kim struct page *page = NULL; 2752aec71382SChao Yu 2753aec71382SChao Yu /* 2754aec71382SChao Yu * there are two steps to flush nat entries: 2755aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2756aec71382SChao Yu * #2, flush nat entries to nat page. 2757aec71382SChao Yu */ 275822ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 275922ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2760aec71382SChao Yu to_journal = false; 2761aec71382SChao Yu 2762aec71382SChao Yu if (to_journal) { 2763b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2764aec71382SChao Yu } else { 2765e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2766edc55aafSJaegeuk Kim if (IS_ERR(page)) 2767edc55aafSJaegeuk Kim return PTR_ERR(page); 2768edc55aafSJaegeuk Kim 2769e05df3b1SJaegeuk Kim nat_blk = page_address(page); 27709850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2771e05df3b1SJaegeuk Kim } 2772e05df3b1SJaegeuk Kim 2773aec71382SChao Yu /* flush dirty nats in nat entry set */ 2774309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2775aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2776aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2777aec71382SChao Yu int offset; 2778aec71382SChao Yu 2779febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2780309cc2b6SJaegeuk Kim 2781aec71382SChao Yu if (to_journal) { 27824d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2783aec71382SChao Yu NAT_JOURNAL, nid, 1); 27849850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2785dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2786dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2787aec71382SChao Yu } else { 2788aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2789aec71382SChao Yu } 2790aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 279188bd02c9SJaegeuk Kim nat_reset_flag(ne); 27920b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 279304d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 27945921aaa1SLiFan add_free_nid(sbi, nid, false, true); 27954ac91242SChao Yu } else { 27964ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2797346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 279804d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 279904d47e67SChao Yu } 2800e05df3b1SJaegeuk Kim } 2801aec71382SChao Yu 280222ad0b6aSJaegeuk Kim if (to_journal) { 2803b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 280422ad0b6aSJaegeuk Kim } else { 280522ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2806e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 280722ad0b6aSJaegeuk Kim } 2808aec71382SChao Yu 280959c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 281059c9081bSYunlei He if (!set->entry_cnt) { 2811309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2812309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2813309cc2b6SJaegeuk Kim } 2814edc55aafSJaegeuk Kim return 0; 281559c9081bSYunlei He } 2816aec71382SChao Yu 2817309cc2b6SJaegeuk Kim /* 2818309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2819309cc2b6SJaegeuk Kim */ 2820edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2821309cc2b6SJaegeuk Kim { 2822309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2823309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2824b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 28257aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2826309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2827309cc2b6SJaegeuk Kim unsigned int found; 2828309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2829309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2830edc55aafSJaegeuk Kim int err = 0; 2831309cc2b6SJaegeuk Kim 28327f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 28337f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 28347f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 28357f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 28367f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 28377f2ecdd8SJaegeuk Kim } 28387f2ecdd8SJaegeuk Kim 283920d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 2840edc55aafSJaegeuk Kim return 0; 2841a5131193SJaegeuk Kim 2842b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2843a5131193SJaegeuk Kim 2844309cc2b6SJaegeuk Kim /* 2845309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2846309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2847309cc2b6SJaegeuk Kim * into nat entry set. 2848309cc2b6SJaegeuk Kim */ 2849900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 285022ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2851309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2852309cc2b6SJaegeuk Kim 2853309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 28547aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2855309cc2b6SJaegeuk Kim unsigned idx; 2856309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2857309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2858309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2859dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2860309cc2b6SJaegeuk Kim } 2861309cc2b6SJaegeuk Kim 2862309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2863edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 2864edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 2865edc55aafSJaegeuk Kim if (err) 2866edc55aafSJaegeuk Kim break; 2867edc55aafSJaegeuk Kim } 2868309cc2b6SJaegeuk Kim 2869b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 287059c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2871edc55aafSJaegeuk Kim 2872edc55aafSJaegeuk Kim return err; 2873e05df3b1SJaegeuk Kim } 2874e05df3b1SJaegeuk Kim 287522ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 287622ad0b6aSJaegeuk Kim { 287722ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 287822ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 287922ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 288022ad0b6aSJaegeuk Kim unsigned int i; 288122ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 288222ad0b6aSJaegeuk Kim block_t nat_bits_addr; 288322ad0b6aSJaegeuk Kim 288422ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 288522ad0b6aSJaegeuk Kim return 0; 288622ad0b6aSJaegeuk Kim 2887df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2888acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2889acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 289022ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 289122ad0b6aSJaegeuk Kim return -ENOMEM; 289222ad0b6aSJaegeuk Kim 289322ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 289422ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 289522ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 28967735730dSChao Yu struct page *page; 28977735730dSChao Yu 28987735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 28993b30eb19SChao Yu if (IS_ERR(page)) 29007735730dSChao Yu return PTR_ERR(page); 290122ad0b6aSJaegeuk Kim 290222ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 290322ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 290422ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 290522ad0b6aSJaegeuk Kim } 290622ad0b6aSJaegeuk Kim 2907ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 290822ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 290922ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 291022ad0b6aSJaegeuk Kim return 0; 291122ad0b6aSJaegeuk Kim } 291222ad0b6aSJaegeuk Kim 291322ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 291422ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 291522ad0b6aSJaegeuk Kim 291622ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 291722ad0b6aSJaegeuk Kim return 0; 291822ad0b6aSJaegeuk Kim } 291922ad0b6aSJaegeuk Kim 2920bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 29217041d5d2SChao Yu { 29227041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 29237041d5d2SChao Yu unsigned int i = 0; 29247041d5d2SChao Yu nid_t nid, last_nid; 29257041d5d2SChao Yu 29267041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 29277041d5d2SChao Yu return; 29287041d5d2SChao Yu 29297041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29307041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 29317041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29327041d5d2SChao Yu break; 29337041d5d2SChao Yu 29347041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29357041d5d2SChao Yu 29367041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2937f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 29387041d5d2SChao Yu 2939346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 29407041d5d2SChao Yu for (; nid < last_nid; nid++) 2941346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2942346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 29437041d5d2SChao Yu } 29447041d5d2SChao Yu 29457041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29467041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 29477041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29487041d5d2SChao Yu break; 29497041d5d2SChao Yu 29507041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29517041d5d2SChao Yu } 29527041d5d2SChao Yu } 29537041d5d2SChao Yu 2954e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2955e05df3b1SJaegeuk Kim { 2956e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2957e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2958e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 295922ad0b6aSJaegeuk Kim unsigned int nat_segs; 296022ad0b6aSJaegeuk Kim int err; 2961e05df3b1SJaegeuk Kim 2962e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2963e05df3b1SJaegeuk Kim 2964e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2965e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 296622ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 296722ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 29687ee0eeabSJaegeuk Kim 2969b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 297004d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2971292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 29729a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 29739a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2974e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2975cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2976ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 29772304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2978e05df3b1SJaegeuk Kim 29798a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 29809a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2981769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2982769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2983e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 298422969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 2985e05df3b1SJaegeuk Kim 2986e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2987b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2988b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2989e05df3b1SJaegeuk Kim 2990e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 299179b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2992e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2993e05df3b1SJaegeuk Kim if (!version_bitmap) 2994e05df3b1SJaegeuk Kim return -EFAULT; 2995e05df3b1SJaegeuk Kim 299679b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 299779b5793bSAlexandru Gheorghiu GFP_KERNEL); 299879b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 299979b5793bSAlexandru Gheorghiu return -ENOMEM; 3000599a09b2SChao Yu 300122ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 300222ad0b6aSJaegeuk Kim if (err) 300322ad0b6aSJaegeuk Kim return err; 300422ad0b6aSJaegeuk Kim 3005599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3006599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 3007599a09b2SChao Yu GFP_KERNEL); 3008599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 3009599a09b2SChao Yu return -ENOMEM; 3010599a09b2SChao Yu #endif 3011599a09b2SChao Yu 3012e05df3b1SJaegeuk Kim return 0; 3013e05df3b1SJaegeuk Kim } 3014e05df3b1SJaegeuk Kim 30159f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 30164ac91242SChao Yu { 30174ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 3018bb1105e4SJaegeuk Kim int i; 30194ac91242SChao Yu 3020026f0507SKees Cook nm_i->free_nid_bitmap = 3021026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 3022026f0507SKees Cook nm_i->nat_blocks), 3023026f0507SKees Cook GFP_KERNEL); 30244ac91242SChao Yu if (!nm_i->free_nid_bitmap) 30254ac91242SChao Yu return -ENOMEM; 30264ac91242SChao Yu 3027bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3028bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3029e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 303068c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3031bb1105e4SJaegeuk Kim return -ENOMEM; 3032bb1105e4SJaegeuk Kim } 3033bb1105e4SJaegeuk Kim 3034628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 30354ac91242SChao Yu GFP_KERNEL); 30364ac91242SChao Yu if (!nm_i->nat_block_bitmap) 30374ac91242SChao Yu return -ENOMEM; 3038586d1492SChao Yu 30399d2a789cSKees Cook nm_i->free_nid_count = 30409d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 30419d2a789cSKees Cook nm_i->nat_blocks), 30429d2a789cSKees Cook GFP_KERNEL); 3043586d1492SChao Yu if (!nm_i->free_nid_count) 3044586d1492SChao Yu return -ENOMEM; 30454ac91242SChao Yu return 0; 30464ac91242SChao Yu } 30474ac91242SChao Yu 30484d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3049e05df3b1SJaegeuk Kim { 3050e05df3b1SJaegeuk Kim int err; 3051e05df3b1SJaegeuk Kim 3052acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3053acbf054dSChao Yu GFP_KERNEL); 3054e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3055e05df3b1SJaegeuk Kim return -ENOMEM; 3056e05df3b1SJaegeuk Kim 3057e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3058e05df3b1SJaegeuk Kim if (err) 3059e05df3b1SJaegeuk Kim return err; 3060e05df3b1SJaegeuk Kim 30614ac91242SChao Yu err = init_free_nid_cache(sbi); 30624ac91242SChao Yu if (err) 30634ac91242SChao Yu return err; 30644ac91242SChao Yu 30657041d5d2SChao Yu /* load free nid status from nat_bits table */ 30667041d5d2SChao Yu load_free_nid_bitmap(sbi); 30677041d5d2SChao Yu 3068e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3069e05df3b1SJaegeuk Kim } 3070e05df3b1SJaegeuk Kim 30714d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3072e05df3b1SJaegeuk Kim { 3073e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3074e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3075e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 30767aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3077e05df3b1SJaegeuk Kim nid_t nid = 0; 3078e05df3b1SJaegeuk Kim unsigned int found; 3079e05df3b1SJaegeuk Kim 3080e05df3b1SJaegeuk Kim if (!nm_i) 3081e05df3b1SJaegeuk Kim return; 3082e05df3b1SJaegeuk Kim 3083e05df3b1SJaegeuk Kim /* destroy free nid list */ 3084b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 30859a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3086a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3087b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3088cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3089b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3090e05df3b1SJaegeuk Kim } 30919a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 30929a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 30939a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3094b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3095e05df3b1SJaegeuk Kim 3096e05df3b1SJaegeuk Kim /* destroy nat cache */ 3097b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3098e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3099e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3100e05df3b1SJaegeuk Kim unsigned idx; 31017aed0d45SJaegeuk Kim 3102b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 310322969158SChao Yu for (idx = 0; idx < found; idx++) { 310422969158SChao Yu spin_lock(&nm_i->nat_list_lock); 310522969158SChao Yu list_del(&natvec[idx]->list); 310622969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 310722969158SChao Yu 3108b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3109e05df3b1SJaegeuk Kim } 311022969158SChao Yu } 31119850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 31127aed0d45SJaegeuk Kim 31137aed0d45SJaegeuk Kim /* destroy nat set cache */ 31147aed0d45SJaegeuk Kim nid = 0; 31157aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 31167aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 31177aed0d45SJaegeuk Kim unsigned idx; 31187aed0d45SJaegeuk Kim 31197aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 31207aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 31217aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 31227aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 31237aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 31247aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 31257aed0d45SJaegeuk Kim } 31267aed0d45SJaegeuk Kim } 3127b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3128e05df3b1SJaegeuk Kim 31294ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3130bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3131bb1105e4SJaegeuk Kim int i; 3132bb1105e4SJaegeuk Kim 3133bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3134bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 31355222595dSJaegeuk Kim kvfree(nm_i->free_nid_bitmap); 3136bb1105e4SJaegeuk Kim } 3137586d1492SChao Yu kvfree(nm_i->free_nid_count); 31384ac91242SChao Yu 31395222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap); 31405222595dSJaegeuk Kim kvfree(nm_i->nat_bits); 3141599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 31425222595dSJaegeuk Kim kvfree(nm_i->nat_bitmap_mir); 3143599a09b2SChao Yu #endif 3144e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 31455222595dSJaegeuk Kim kvfree(nm_i); 3146e05df3b1SJaegeuk Kim } 3147e05df3b1SJaegeuk Kim 31484d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3149e05df3b1SJaegeuk Kim { 3150e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 3151e8512d2eSGu Zheng sizeof(struct nat_entry)); 3152e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3153aec71382SChao Yu goto fail; 3154e05df3b1SJaegeuk Kim 3155e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 3156e8512d2eSGu Zheng sizeof(struct free_nid)); 3157aec71382SChao Yu if (!free_nid_slab) 3158ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3159aec71382SChao Yu 3160aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 3161aec71382SChao Yu sizeof(struct nat_entry_set)); 3162aec71382SChao Yu if (!nat_entry_set_slab) 3163ce3e6d25SMarkus Elfring goto destroy_free_nid; 316450fa53ecSChao Yu 316550fa53ecSChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("fsync_node_entry", 316650fa53ecSChao Yu sizeof(struct fsync_node_entry)); 316750fa53ecSChao Yu if (!fsync_node_entry_slab) 316850fa53ecSChao Yu goto destroy_nat_entry_set; 3169e05df3b1SJaegeuk Kim return 0; 3170aec71382SChao Yu 317150fa53ecSChao Yu destroy_nat_entry_set: 317250fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3173ce3e6d25SMarkus Elfring destroy_free_nid: 3174aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3175ce3e6d25SMarkus Elfring destroy_nat_entry: 3176aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3177aec71382SChao Yu fail: 3178aec71382SChao Yu return -ENOMEM; 3179e05df3b1SJaegeuk Kim } 3180e05df3b1SJaegeuk Kim 31814d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3182e05df3b1SJaegeuk Kim { 318350fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3184aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3185e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3186e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3187e05df3b1SJaegeuk Kim } 3188