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)) { 1044d57b86dSChao Yu f2fs_clear_radix_tree_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); 457e1da7872SChao Yu f2fs_bug_on(sbi, is_valid_data_blkaddr(sbi, 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); 468e1da7872SChao Yu if (!is_valid_data_blkaddr(sbi, 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; 529e05df3b1SJaegeuk Kim int i; 530e05df3b1SJaegeuk Kim 531e05df3b1SJaegeuk Kim ni->nid = nid; 532e05df3b1SJaegeuk Kim 533e05df3b1SJaegeuk Kim /* Check nat cache */ 534b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 535e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 536e05df3b1SJaegeuk Kim if (e) { 537e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 538e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 539e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 540b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5417735730dSChao Yu return 0; 5421515aef0SChao Yu } 543e05df3b1SJaegeuk Kim 5443547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 5453547ea96SJaegeuk Kim 546e05df3b1SJaegeuk Kim /* Check current segment summary */ 547b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5484d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 549e05df3b1SJaegeuk Kim if (i >= 0) { 550dfc08a12SChao Yu ne = nat_in_journal(journal, i); 551e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 552e05df3b1SJaegeuk Kim } 553b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 55466a82d1fSYunlei He if (i >= 0) { 55566a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 556e05df3b1SJaegeuk Kim goto cache; 55766a82d1fSYunlei He } 558e05df3b1SJaegeuk Kim 559e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 56066a82d1fSYunlei He index = current_nat_addr(sbi, nid); 56166a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 56266a82d1fSYunlei He 5634d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5647735730dSChao Yu if (IS_ERR(page)) 5657735730dSChao Yu return PTR_ERR(page); 5667735730dSChao Yu 567e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 568e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 569e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 570e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 571e05df3b1SJaegeuk Kim cache: 572e05df3b1SJaegeuk Kim /* cache nat entry */ 5731515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 5747735730dSChao Yu return 0; 575e05df3b1SJaegeuk Kim } 576e05df3b1SJaegeuk Kim 57779344efbSJaegeuk Kim /* 57879344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 57979344efbSJaegeuk Kim */ 5804d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 58179344efbSJaegeuk Kim { 58279344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 58379344efbSJaegeuk Kim struct blk_plug plug; 58479344efbSJaegeuk Kim int i, end; 58579344efbSJaegeuk Kim nid_t nid; 58679344efbSJaegeuk Kim 58779344efbSJaegeuk Kim blk_start_plug(&plug); 58879344efbSJaegeuk Kim 58979344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 59079344efbSJaegeuk Kim end = start + n; 59179344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 59279344efbSJaegeuk Kim for (i = start; i < end; i++) { 59379344efbSJaegeuk Kim nid = get_nid(parent, i, false); 5944d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 59579344efbSJaegeuk Kim } 59679344efbSJaegeuk Kim 59779344efbSJaegeuk Kim blk_finish_plug(&plug); 59879344efbSJaegeuk Kim } 59979344efbSJaegeuk Kim 6004d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 6013cf45747SChao Yu { 6023cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 6033cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 6043cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 6053cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 6063cf45747SChao Yu int cur_level = dn->cur_level; 6073cf45747SChao Yu int max_level = dn->max_level; 6083cf45747SChao Yu pgoff_t base = 0; 6093cf45747SChao Yu 6103cf45747SChao Yu if (!dn->max_level) 6113cf45747SChao Yu return pgofs + 1; 6123cf45747SChao Yu 6133cf45747SChao Yu while (max_level-- > cur_level) 6143cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 6153cf45747SChao Yu 6163cf45747SChao Yu switch (dn->max_level) { 6173cf45747SChao Yu case 3: 6183cf45747SChao Yu base += 2 * indirect_blks; 6193cf45747SChao Yu case 2: 6203cf45747SChao Yu base += 2 * direct_blks; 6213cf45747SChao Yu case 1: 6223cf45747SChao Yu base += direct_index; 6233cf45747SChao Yu break; 6243cf45747SChao Yu default: 6253cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 6263cf45747SChao Yu } 6273cf45747SChao Yu 6283cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 6293cf45747SChao Yu } 6303cf45747SChao Yu 6310a8165d7SJaegeuk Kim /* 632e05df3b1SJaegeuk Kim * The maximum depth is four. 633e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 634e05df3b1SJaegeuk Kim */ 63581ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 636de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 637e05df3b1SJaegeuk Kim { 63881ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 639e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 640e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 641e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 642e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 643e05df3b1SJaegeuk Kim int n = 0; 644e05df3b1SJaegeuk Kim int level = 0; 645e05df3b1SJaegeuk Kim 646e05df3b1SJaegeuk Kim noffset[0] = 0; 647e05df3b1SJaegeuk Kim 648e05df3b1SJaegeuk Kim if (block < direct_index) { 64925c0a6e5SNamjae Jeon offset[n] = block; 650e05df3b1SJaegeuk Kim goto got; 651e05df3b1SJaegeuk Kim } 652e05df3b1SJaegeuk Kim block -= direct_index; 653e05df3b1SJaegeuk Kim if (block < direct_blks) { 654e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 655e05df3b1SJaegeuk Kim noffset[n] = 1; 65625c0a6e5SNamjae Jeon offset[n] = block; 657e05df3b1SJaegeuk Kim level = 1; 658e05df3b1SJaegeuk Kim goto got; 659e05df3b1SJaegeuk Kim } 660e05df3b1SJaegeuk Kim block -= direct_blks; 661e05df3b1SJaegeuk Kim if (block < direct_blks) { 662e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 663e05df3b1SJaegeuk Kim noffset[n] = 2; 66425c0a6e5SNamjae Jeon offset[n] = block; 665e05df3b1SJaegeuk Kim level = 1; 666e05df3b1SJaegeuk Kim goto got; 667e05df3b1SJaegeuk Kim } 668e05df3b1SJaegeuk Kim block -= direct_blks; 669e05df3b1SJaegeuk Kim if (block < indirect_blks) { 670e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 671e05df3b1SJaegeuk Kim noffset[n] = 3; 672e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 673e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 67425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 675e05df3b1SJaegeuk Kim level = 2; 676e05df3b1SJaegeuk Kim goto got; 677e05df3b1SJaegeuk Kim } 678e05df3b1SJaegeuk Kim block -= indirect_blks; 679e05df3b1SJaegeuk Kim if (block < indirect_blks) { 680e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 681e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 682e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 683e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 68425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 685e05df3b1SJaegeuk Kim level = 2; 686e05df3b1SJaegeuk Kim goto got; 687e05df3b1SJaegeuk Kim } 688e05df3b1SJaegeuk Kim block -= indirect_blks; 689e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 690e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 691e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 692e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 693e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 694e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 695e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 696e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 697e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 698e05df3b1SJaegeuk Kim offset[n - 1]; 69925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 700e05df3b1SJaegeuk Kim level = 3; 701e05df3b1SJaegeuk Kim goto got; 702e05df3b1SJaegeuk Kim } else { 703adb6dc19SJaegeuk Kim return -E2BIG; 704e05df3b1SJaegeuk Kim } 705e05df3b1SJaegeuk Kim got: 706e05df3b1SJaegeuk Kim return level; 707e05df3b1SJaegeuk Kim } 708e05df3b1SJaegeuk Kim 709e05df3b1SJaegeuk Kim /* 710e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 7114f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 7124f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 71339936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 714e05df3b1SJaegeuk Kim */ 7154d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 716e05df3b1SJaegeuk Kim { 7174081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 718e05df3b1SJaegeuk Kim struct page *npage[4]; 719f1a3b98eSJaegeuk Kim struct page *parent = NULL; 720e05df3b1SJaegeuk Kim int offset[4]; 721e05df3b1SJaegeuk Kim unsigned int noffset[4]; 722e05df3b1SJaegeuk Kim nid_t nids[4]; 7233cf45747SChao Yu int level, i = 0; 724e05df3b1SJaegeuk Kim int err = 0; 725e05df3b1SJaegeuk Kim 72681ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 727adb6dc19SJaegeuk Kim if (level < 0) 728adb6dc19SJaegeuk Kim return level; 729e05df3b1SJaegeuk Kim 730e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7311646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7321646cfacSJaegeuk Kim 7331646cfacSJaegeuk Kim if (!npage[0]) { 7344d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 735e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 736e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7371646cfacSJaegeuk Kim } 738f1a3b98eSJaegeuk Kim 739f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 740f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 74176629165SJaegeuk Kim err = -ENOENT; 742f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 743f1a3b98eSJaegeuk Kim goto release_out; 744f1a3b98eSJaegeuk Kim } 745f1a3b98eSJaegeuk Kim 746e05df3b1SJaegeuk Kim parent = npage[0]; 74752c2db3fSChangman Lee if (level != 0) 748e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 749e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 750e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 751e05df3b1SJaegeuk Kim 752e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 753e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 754e05df3b1SJaegeuk Kim bool done = false; 755e05df3b1SJaegeuk Kim 756266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 757e05df3b1SJaegeuk Kim /* alloc new node */ 7584d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 759e05df3b1SJaegeuk Kim err = -ENOSPC; 760e05df3b1SJaegeuk Kim goto release_pages; 761e05df3b1SJaegeuk Kim } 762e05df3b1SJaegeuk Kim 763e05df3b1SJaegeuk Kim dn->nid = nids[i]; 7644d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 765e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 7664d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 767e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 768e05df3b1SJaegeuk Kim goto release_pages; 769e05df3b1SJaegeuk Kim } 770e05df3b1SJaegeuk Kim 771e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 7724d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 773e05df3b1SJaegeuk Kim done = true; 774266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 7754d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 776e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 777e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 778e05df3b1SJaegeuk Kim goto release_pages; 779e05df3b1SJaegeuk Kim } 780e05df3b1SJaegeuk Kim done = true; 781e05df3b1SJaegeuk Kim } 782e05df3b1SJaegeuk Kim if (i == 1) { 783e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 784e05df3b1SJaegeuk Kim unlock_page(parent); 785e05df3b1SJaegeuk Kim } else { 786e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 787e05df3b1SJaegeuk Kim } 788e05df3b1SJaegeuk Kim 789e05df3b1SJaegeuk Kim if (!done) { 7904d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 791e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 792e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 793e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 794e05df3b1SJaegeuk Kim goto release_out; 795e05df3b1SJaegeuk Kim } 796e05df3b1SJaegeuk Kim } 797e05df3b1SJaegeuk Kim if (i < level) { 798e05df3b1SJaegeuk Kim parent = npage[i]; 799e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 800e05df3b1SJaegeuk Kim } 801e05df3b1SJaegeuk Kim } 802e05df3b1SJaegeuk Kim dn->nid = nids[level]; 803e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 804e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 8057a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 8067a2af766SChao Yu dn->node_page, dn->ofs_in_node); 807e05df3b1SJaegeuk Kim return 0; 808e05df3b1SJaegeuk Kim 809e05df3b1SJaegeuk Kim release_pages: 810e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 811e05df3b1SJaegeuk Kim if (i > 1) 812e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 813e05df3b1SJaegeuk Kim release_out: 814e05df3b1SJaegeuk Kim dn->inode_page = NULL; 815e05df3b1SJaegeuk Kim dn->node_page = NULL; 8163cf45747SChao Yu if (err == -ENOENT) { 8173cf45747SChao Yu dn->cur_level = i; 8183cf45747SChao Yu dn->max_level = level; 8190a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 8203cf45747SChao Yu } 821e05df3b1SJaegeuk Kim return err; 822e05df3b1SJaegeuk Kim } 823e05df3b1SJaegeuk Kim 8247735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 825e05df3b1SJaegeuk Kim { 8264081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 827e05df3b1SJaegeuk Kim struct node_info ni; 8287735730dSChao Yu int err; 829e05df3b1SJaegeuk Kim 8307735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8317735730dSChao Yu if (err) 8327735730dSChao Yu return err; 833e05df3b1SJaegeuk Kim 834e05df3b1SJaegeuk Kim /* Deallocate node address */ 8354d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 836000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 837479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 838e05df3b1SJaegeuk Kim 839e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 8404d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 841e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 8420f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 843e05df3b1SJaegeuk Kim } 844000519f2SChao Yu 845e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 846caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 847e05df3b1SJaegeuk Kim 848e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 849bf39c00aSJaegeuk Kim 850bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 851bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 852bf39c00aSJaegeuk Kim 853e05df3b1SJaegeuk Kim dn->node_page = NULL; 85451dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 8557735730dSChao Yu 8567735730dSChao Yu return 0; 857e05df3b1SJaegeuk Kim } 858e05df3b1SJaegeuk Kim 859e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 860e05df3b1SJaegeuk Kim { 861e05df3b1SJaegeuk Kim struct page *page; 8627735730dSChao Yu int err; 863e05df3b1SJaegeuk Kim 864e05df3b1SJaegeuk Kim if (dn->nid == 0) 865e05df3b1SJaegeuk Kim return 1; 866e05df3b1SJaegeuk Kim 867e05df3b1SJaegeuk Kim /* get direct node */ 8684d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 869e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 870e05df3b1SJaegeuk Kim return 1; 871e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 872e05df3b1SJaegeuk Kim return PTR_ERR(page); 873e05df3b1SJaegeuk Kim 874e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 875e05df3b1SJaegeuk Kim dn->node_page = page; 876e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 8774d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 8787735730dSChao Yu err = truncate_node(dn); 8797735730dSChao Yu if (err) 8807735730dSChao Yu return err; 8817735730dSChao Yu 882e05df3b1SJaegeuk Kim return 1; 883e05df3b1SJaegeuk Kim } 884e05df3b1SJaegeuk Kim 885e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 886e05df3b1SJaegeuk Kim int ofs, int depth) 887e05df3b1SJaegeuk Kim { 888e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 889e05df3b1SJaegeuk Kim struct page *page; 890e05df3b1SJaegeuk Kim struct f2fs_node *rn; 891e05df3b1SJaegeuk Kim nid_t child_nid; 892e05df3b1SJaegeuk Kim unsigned int child_nofs; 893e05df3b1SJaegeuk Kim int freed = 0; 894e05df3b1SJaegeuk Kim int i, ret; 895e05df3b1SJaegeuk Kim 896e05df3b1SJaegeuk Kim if (dn->nid == 0) 897e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 898e05df3b1SJaegeuk Kim 89951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 90051dd6249SNamjae Jeon 9014d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 90251dd6249SNamjae Jeon if (IS_ERR(page)) { 90351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 904e05df3b1SJaegeuk Kim return PTR_ERR(page); 90551dd6249SNamjae Jeon } 906e05df3b1SJaegeuk Kim 9074d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 90879344efbSJaegeuk Kim 90945590710SGu Zheng rn = F2FS_NODE(page); 910e05df3b1SJaegeuk Kim if (depth < 3) { 911e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 912e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 913e05df3b1SJaegeuk Kim if (child_nid == 0) 914e05df3b1SJaegeuk Kim continue; 915e05df3b1SJaegeuk Kim rdn.nid = child_nid; 916e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 917e05df3b1SJaegeuk Kim if (ret < 0) 918e05df3b1SJaegeuk Kim goto out_err; 91912719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 92093bae099SJaegeuk Kim dn->node_changed = true; 921e05df3b1SJaegeuk Kim } 922e05df3b1SJaegeuk Kim } else { 923e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 924e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 925e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 926e05df3b1SJaegeuk Kim if (child_nid == 0) { 927e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 928e05df3b1SJaegeuk Kim continue; 929e05df3b1SJaegeuk Kim } 930e05df3b1SJaegeuk Kim rdn.nid = child_nid; 931e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 932e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 93312719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 93493bae099SJaegeuk Kim dn->node_changed = true; 935e05df3b1SJaegeuk Kim child_nofs += ret; 936e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 937e05df3b1SJaegeuk Kim goto out_err; 938e05df3b1SJaegeuk Kim } 939e05df3b1SJaegeuk Kim } 940e05df3b1SJaegeuk Kim freed = child_nofs; 941e05df3b1SJaegeuk Kim } 942e05df3b1SJaegeuk Kim 943e05df3b1SJaegeuk Kim if (!ofs) { 944e05df3b1SJaegeuk Kim /* remove current indirect node */ 945e05df3b1SJaegeuk Kim dn->node_page = page; 9467735730dSChao Yu ret = truncate_node(dn); 9477735730dSChao Yu if (ret) 9487735730dSChao Yu goto out_err; 949e05df3b1SJaegeuk Kim freed++; 950e05df3b1SJaegeuk Kim } else { 951e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 952e05df3b1SJaegeuk Kim } 95351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 954e05df3b1SJaegeuk Kim return freed; 955e05df3b1SJaegeuk Kim 956e05df3b1SJaegeuk Kim out_err: 957e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 95851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 959e05df3b1SJaegeuk Kim return ret; 960e05df3b1SJaegeuk Kim } 961e05df3b1SJaegeuk Kim 962e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 963e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 964e05df3b1SJaegeuk Kim { 965e05df3b1SJaegeuk Kim struct page *pages[2]; 966e05df3b1SJaegeuk Kim nid_t nid[3]; 967e05df3b1SJaegeuk Kim nid_t child_nid; 968e05df3b1SJaegeuk Kim int err = 0; 969e05df3b1SJaegeuk Kim int i; 970e05df3b1SJaegeuk Kim int idx = depth - 2; 971e05df3b1SJaegeuk Kim 972e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 973e05df3b1SJaegeuk Kim if (!nid[0]) 974e05df3b1SJaegeuk Kim return 0; 975e05df3b1SJaegeuk Kim 976e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 977a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 978e1c42045Sarter97 /* reference count'll be increased */ 9794d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 980e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 981e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 982a225dca3Sshifei10.ge idx = i - 1; 983e05df3b1SJaegeuk Kim goto fail; 984e05df3b1SJaegeuk Kim } 985e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 986e05df3b1SJaegeuk Kim } 987e05df3b1SJaegeuk Kim 9884d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 98979344efbSJaegeuk Kim 990e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 991a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 992e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 993e05df3b1SJaegeuk Kim if (!child_nid) 994e05df3b1SJaegeuk Kim continue; 995e05df3b1SJaegeuk Kim dn->nid = child_nid; 996e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 997e05df3b1SJaegeuk Kim if (err < 0) 998e05df3b1SJaegeuk Kim goto fail; 99912719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 100093bae099SJaegeuk Kim dn->node_changed = true; 1001e05df3b1SJaegeuk Kim } 1002e05df3b1SJaegeuk Kim 1003a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 1004e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 1005e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 10067735730dSChao Yu err = truncate_node(dn); 10077735730dSChao Yu if (err) 10087735730dSChao Yu goto fail; 1009e05df3b1SJaegeuk Kim } else { 1010e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 1011e05df3b1SJaegeuk Kim } 1012e05df3b1SJaegeuk Kim offset[idx]++; 1013a225dca3Sshifei10.ge offset[idx + 1] = 0; 1014a225dca3Sshifei10.ge idx--; 1015e05df3b1SJaegeuk Kim fail: 1016a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 1017e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 101851dd6249SNamjae Jeon 101951dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 102051dd6249SNamjae Jeon 1021e05df3b1SJaegeuk Kim return err; 1022e05df3b1SJaegeuk Kim } 1023e05df3b1SJaegeuk Kim 10240a8165d7SJaegeuk Kim /* 1025e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 1026e05df3b1SJaegeuk Kim */ 10274d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 1028e05df3b1SJaegeuk Kim { 10294081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1030e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1031e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10327dd690c8SJaegeuk Kim unsigned int nofs = 0; 103358bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1034e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1035e05df3b1SJaegeuk Kim struct page *page; 1036e05df3b1SJaegeuk Kim 103751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 103851dd6249SNamjae Jeon 103981ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 1040adb6dc19SJaegeuk Kim if (level < 0) 1041adb6dc19SJaegeuk Kim return level; 1042ff373558SJaegeuk Kim 10434d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 104451dd6249SNamjae Jeon if (IS_ERR(page)) { 104551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1046e05df3b1SJaegeuk Kim return PTR_ERR(page); 104751dd6249SNamjae Jeon } 1048e05df3b1SJaegeuk Kim 1049e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1050e05df3b1SJaegeuk Kim unlock_page(page); 1051e05df3b1SJaegeuk Kim 105258bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1053e05df3b1SJaegeuk Kim switch (level) { 1054e05df3b1SJaegeuk Kim case 0: 1055e05df3b1SJaegeuk Kim case 1: 1056e05df3b1SJaegeuk Kim nofs = noffset[1]; 1057e05df3b1SJaegeuk Kim break; 1058e05df3b1SJaegeuk Kim case 2: 1059e05df3b1SJaegeuk Kim nofs = noffset[1]; 1060e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1061e05df3b1SJaegeuk Kim goto skip_partial; 106258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1063e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1064e05df3b1SJaegeuk Kim goto fail; 1065e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1066e05df3b1SJaegeuk Kim break; 1067e05df3b1SJaegeuk Kim case 3: 1068e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1069e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1070e05df3b1SJaegeuk Kim goto skip_partial; 107158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1072e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1073e05df3b1SJaegeuk Kim goto fail; 1074e05df3b1SJaegeuk Kim break; 1075e05df3b1SJaegeuk Kim default: 1076e05df3b1SJaegeuk Kim BUG(); 1077e05df3b1SJaegeuk Kim } 1078e05df3b1SJaegeuk Kim 1079e05df3b1SJaegeuk Kim skip_partial: 1080e05df3b1SJaegeuk Kim while (cont) { 108158bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1082e05df3b1SJaegeuk Kim switch (offset[0]) { 1083e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1084e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1085e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1086e05df3b1SJaegeuk Kim break; 1087e05df3b1SJaegeuk Kim 1088e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1089e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1090e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1091e05df3b1SJaegeuk Kim break; 1092e05df3b1SJaegeuk Kim 1093e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1094e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1095e05df3b1SJaegeuk Kim cont = 0; 1096e05df3b1SJaegeuk Kim break; 1097e05df3b1SJaegeuk Kim 1098e05df3b1SJaegeuk Kim default: 1099e05df3b1SJaegeuk Kim BUG(); 1100e05df3b1SJaegeuk Kim } 1101e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1102e05df3b1SJaegeuk Kim goto fail; 1103e05df3b1SJaegeuk Kim if (offset[1] == 0 && 110458bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1105e05df3b1SJaegeuk Kim lock_page(page); 1106ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1107fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 110858bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1109e05df3b1SJaegeuk Kim set_page_dirty(page); 1110e05df3b1SJaegeuk Kim unlock_page(page); 1111e05df3b1SJaegeuk Kim } 1112e05df3b1SJaegeuk Kim offset[1] = 0; 1113e05df3b1SJaegeuk Kim offset[0]++; 1114e05df3b1SJaegeuk Kim nofs += err; 1115e05df3b1SJaegeuk Kim } 1116e05df3b1SJaegeuk Kim fail: 1117e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 111851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1119e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1120e05df3b1SJaegeuk Kim } 1121e05df3b1SJaegeuk Kim 11229c77f754SJaegeuk Kim /* caller must lock inode page */ 11234d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 11244f16fb0fSJaegeuk Kim { 11254081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 11264f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 11274f16fb0fSJaegeuk Kim struct dnode_of_data dn; 11284f16fb0fSJaegeuk Kim struct page *npage; 11297735730dSChao Yu int err; 11304f16fb0fSJaegeuk Kim 11314f16fb0fSJaegeuk Kim if (!nid) 11324f16fb0fSJaegeuk Kim return 0; 11334f16fb0fSJaegeuk Kim 11344d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11354f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11364f16fb0fSJaegeuk Kim return PTR_ERR(npage); 11374f16fb0fSJaegeuk Kim 11387735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 11397735730dSChao Yu err = truncate_node(&dn); 11407735730dSChao Yu if (err) { 11417735730dSChao Yu f2fs_put_page(npage, 1); 11427735730dSChao Yu return err; 11437735730dSChao Yu } 11447735730dSChao Yu 1145205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 114665985d93SJaegeuk Kim 11474f16fb0fSJaegeuk Kim return 0; 11484f16fb0fSJaegeuk Kim } 11494f16fb0fSJaegeuk Kim 115039936837SJaegeuk Kim /* 11514f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 11524f4124d0SChao Yu * f2fs_unlock_op(). 115339936837SJaegeuk Kim */ 11544d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1155e05df3b1SJaegeuk Kim { 1156e05df3b1SJaegeuk Kim struct dnode_of_data dn; 115713ec7297SChao Yu int err; 1158e05df3b1SJaegeuk Kim 1159c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 11604d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 116113ec7297SChao Yu if (err) 116213ec7297SChao Yu return err; 1163e05df3b1SJaegeuk Kim 11644d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 116513ec7297SChao Yu if (err) { 1166c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 116713ec7297SChao Yu return err; 1168e05df3b1SJaegeuk Kim } 1169c2e69583SJaegeuk Kim 1170c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1171c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1172c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 11734d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1174c2e69583SJaegeuk Kim 1175e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 11768d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 11778d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 11788d714f8aSJaegeuk Kim return -EIO; 11798d714f8aSJaegeuk Kim } 11809850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 11810eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1182c2e69583SJaegeuk Kim 1183c2e69583SJaegeuk Kim /* will put inode & node pages */ 11847735730dSChao Yu err = truncate_node(&dn); 11857735730dSChao Yu if (err) { 11867735730dSChao Yu f2fs_put_dnode(&dn); 11877735730dSChao Yu return err; 11887735730dSChao Yu } 118913ec7297SChao Yu return 0; 1190e05df3b1SJaegeuk Kim } 1191e05df3b1SJaegeuk Kim 11924d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1193e05df3b1SJaegeuk Kim { 1194e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1195e05df3b1SJaegeuk Kim 1196e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1197e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 119844a83ff6SJaegeuk Kim 119944a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 12004d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1201e05df3b1SJaegeuk Kim } 1202e05df3b1SJaegeuk Kim 12034d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1204e05df3b1SJaegeuk Kim { 12054081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 120625cc5d3bSJaegeuk Kim struct node_info new_ni; 1207e05df3b1SJaegeuk Kim struct page *page; 1208e05df3b1SJaegeuk Kim int err; 1209e05df3b1SJaegeuk Kim 121091942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1211e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1212e05df3b1SJaegeuk Kim 1213300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1214e05df3b1SJaegeuk Kim if (!page) 1215e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1216e05df3b1SJaegeuk Kim 12170abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 12189c02740cSJaegeuk Kim goto fail; 12190abd675eSChao Yu 122025cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 12217735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 12227735730dSChao Yu if (err) { 12237735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 12247735730dSChao Yu goto fail; 12257735730dSChao Yu } 122625cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 122725cc5d3bSJaegeuk Kim #endif 122825cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1229e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 123025cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 123125cc5d3bSJaegeuk Kim new_ni.flag = 0; 123225cc5d3bSJaegeuk Kim new_ni.version = 0; 1233479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 12349c02740cSJaegeuk Kim 1235fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 12369c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1237c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1238237c0790SJaegeuk Kim if (!PageUptodate(page)) 12399c02740cSJaegeuk Kim SetPageUptodate(page); 124012719ae1SJaegeuk Kim if (set_page_dirty(page)) 124112719ae1SJaegeuk Kim dn->node_changed = true; 1242e05df3b1SJaegeuk Kim 12434bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1244205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1245479bd73aSJaegeuk Kim 1246e05df3b1SJaegeuk Kim if (ofs == 0) 1247e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1248e05df3b1SJaegeuk Kim return page; 1249e05df3b1SJaegeuk Kim 1250e05df3b1SJaegeuk Kim fail: 125171e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1252e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1253e05df3b1SJaegeuk Kim return ERR_PTR(err); 1254e05df3b1SJaegeuk Kim } 1255e05df3b1SJaegeuk Kim 125656ae674cSJaegeuk Kim /* 125756ae674cSJaegeuk Kim * Caller should do after getting the following values. 125856ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 125986531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 126056ae674cSJaegeuk Kim */ 126104d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1262e05df3b1SJaegeuk Kim { 12634081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1264e05df3b1SJaegeuk Kim struct node_info ni; 1265cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 126605ca3632SJaegeuk Kim .sbi = sbi, 1267cf04e8ebSJaegeuk Kim .type = NODE, 126804d328deSMike Christie .op = REQ_OP_READ, 126904d328deSMike Christie .op_flags = op_flags, 127005ca3632SJaegeuk Kim .page = page, 12714375a336SJaegeuk Kim .encrypted_page = NULL, 1272cf04e8ebSJaegeuk Kim }; 12737735730dSChao Yu int err; 1274e05df3b1SJaegeuk Kim 127554c55c4eSWeichao Guo if (PageUptodate(page)) { 127654c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 127754c55c4eSWeichao Guo f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page)); 127854c55c4eSWeichao Guo #endif 12793bdad3c7SJaegeuk Kim return LOCKED_PAGE; 128054c55c4eSWeichao Guo } 12813bdad3c7SJaegeuk Kim 12827735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 12837735730dSChao Yu if (err) 12847735730dSChao Yu return err; 1285e05df3b1SJaegeuk Kim 128683a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 128783a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 12882bca1e23SJaegeuk Kim ClearPageUptodate(page); 1289e05df3b1SJaegeuk Kim return -ENOENT; 1290393ff91fSJaegeuk Kim } 1291393ff91fSJaegeuk Kim 12927a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 129305ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1294e05df3b1SJaegeuk Kim } 1295e05df3b1SJaegeuk Kim 12960a8165d7SJaegeuk Kim /* 1297e05df3b1SJaegeuk Kim * Readahead a node page 1298e05df3b1SJaegeuk Kim */ 12994d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1300e05df3b1SJaegeuk Kim { 1301e05df3b1SJaegeuk Kim struct page *apage; 130256ae674cSJaegeuk Kim int err; 1303e05df3b1SJaegeuk Kim 1304e8458725SChao Yu if (!nid) 1305e8458725SChao Yu return; 13064d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1307a4f843bdSJaegeuk Kim return; 1308e8458725SChao Yu 1309999270deSFan Li rcu_read_lock(); 1310b93b0163SMatthew Wilcox apage = radix_tree_lookup(&NODE_MAPPING(sbi)->i_pages, nid); 1311999270deSFan Li rcu_read_unlock(); 1312999270deSFan Li if (apage) 1313393ff91fSJaegeuk Kim return; 1314e05df3b1SJaegeuk Kim 1315300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1316e05df3b1SJaegeuk Kim if (!apage) 1317e05df3b1SJaegeuk Kim return; 1318e05df3b1SJaegeuk Kim 131970246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 132086531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1321e05df3b1SJaegeuk Kim } 1322e05df3b1SJaegeuk Kim 132317a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 13240e022ea8SChao Yu struct page *parent, int start) 1325e05df3b1SJaegeuk Kim { 132656ae674cSJaegeuk Kim struct page *page; 132756ae674cSJaegeuk Kim int err; 13284aa69d56SJaegeuk Kim 13294aa69d56SJaegeuk Kim if (!nid) 13304aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 13314d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1332a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1333afcb7ca0SJaegeuk Kim repeat: 1334300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1335e05df3b1SJaegeuk Kim if (!page) 1336e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1337e05df3b1SJaegeuk Kim 133870fd7614SChristoph Hellwig err = read_node_page(page, 0); 133986531d6bSJaegeuk Kim if (err < 0) { 134086531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1341e05df3b1SJaegeuk Kim return ERR_PTR(err); 1342e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 13431f258ec1SChao Yu err = 0; 1344e1c51b9fSChao Yu goto page_hit; 134586531d6bSJaegeuk Kim } 1346aaf96075SJaegeuk Kim 13470e022ea8SChao Yu if (parent) 13484d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 13490e022ea8SChao Yu 1350e1c51b9fSChao Yu lock_page(page); 1351e1c51b9fSChao Yu 13524ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1353afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1354afcb7ca0SJaegeuk Kim goto repeat; 1355afcb7ca0SJaegeuk Kim } 13561563ac75SChao Yu 13571f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 13581f258ec1SChao Yu err = -EIO; 13591563ac75SChao Yu goto out_err; 13601f258ec1SChao Yu } 1361704956ecSChao Yu 1362704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1363704956ecSChao Yu err = -EBADMSG; 1364704956ecSChao Yu goto out_err; 1365704956ecSChao Yu } 1366e1c51b9fSChao Yu page_hit: 13670c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 13681f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 13691f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 13701f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 13711f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 13721f258ec1SChao Yu next_blkaddr_of_node(page)); 13731f258ec1SChao Yu err = -EINVAL; 13740c9df7fbSYunlong Song out_err: 1375ee605234SJaegeuk Kim ClearPageUptodate(page); 13760c9df7fbSYunlong Song f2fs_put_page(page, 1); 13771f258ec1SChao Yu return ERR_PTR(err); 13780c9df7fbSYunlong Song } 1379e05df3b1SJaegeuk Kim return page; 1380e05df3b1SJaegeuk Kim } 1381e05df3b1SJaegeuk Kim 13824d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 13830e022ea8SChao Yu { 13840e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 13850e022ea8SChao Yu } 13860e022ea8SChao Yu 13874d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1388e05df3b1SJaegeuk Kim { 13894081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 13900e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1391e05df3b1SJaegeuk Kim 13920e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1393e05df3b1SJaegeuk Kim } 1394e05df3b1SJaegeuk Kim 13952049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 13962049d4fcSJaegeuk Kim { 13972049d4fcSJaegeuk Kim struct inode *inode; 13982049d4fcSJaegeuk Kim struct page *page; 13990f3311a8SChao Yu int ret; 14002049d4fcSJaegeuk Kim 14012049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 14022049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 14032049d4fcSJaegeuk Kim if (!inode) 14042049d4fcSJaegeuk Kim return; 14052049d4fcSJaegeuk Kim 140601eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 140701eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 14082049d4fcSJaegeuk Kim if (!page) 14092049d4fcSJaegeuk Kim goto iput_out; 14102049d4fcSJaegeuk Kim 14112049d4fcSJaegeuk Kim if (!PageUptodate(page)) 14122049d4fcSJaegeuk Kim goto page_out; 14132049d4fcSJaegeuk Kim 14142049d4fcSJaegeuk Kim if (!PageDirty(page)) 14152049d4fcSJaegeuk Kim goto page_out; 14162049d4fcSJaegeuk Kim 14172049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 14182049d4fcSJaegeuk Kim goto page_out; 14192049d4fcSJaegeuk Kim 14200f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 14212049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 14224d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 14230f3311a8SChao Yu if (ret) 14242049d4fcSJaegeuk Kim set_page_dirty(page); 14252049d4fcSJaegeuk Kim page_out: 14264a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 14272049d4fcSJaegeuk Kim iput_out: 14282049d4fcSJaegeuk Kim iput(inode); 14292049d4fcSJaegeuk Kim } 14302049d4fcSJaegeuk Kim 1431608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1432e05df3b1SJaegeuk Kim { 1433028a63a6SJan Kara pgoff_t index; 1434e05df3b1SJaegeuk Kim struct pagevec pvec; 1435608514deSJaegeuk Kim struct page *last_page = NULL; 1436028a63a6SJan Kara int nr_pages; 143752681375SJaegeuk Kim 143886679820SMel Gorman pagevec_init(&pvec); 143952681375SJaegeuk Kim index = 0; 144052681375SJaegeuk Kim 1441028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 144267fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1443028a63a6SJan Kara int i; 144452681375SJaegeuk Kim 144552681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 144652681375SJaegeuk Kim struct page *page = pvec.pages[i]; 144752681375SJaegeuk Kim 144852681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1449608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 145052681375SJaegeuk Kim pagevec_release(&pvec); 1451608514deSJaegeuk Kim return ERR_PTR(-EIO); 145252681375SJaegeuk Kim } 145352681375SJaegeuk Kim 145452681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 145552681375SJaegeuk Kim continue; 145652681375SJaegeuk Kim if (ino_of_node(page) != ino) 145752681375SJaegeuk Kim continue; 145852681375SJaegeuk Kim 145952681375SJaegeuk Kim lock_page(page); 146052681375SJaegeuk Kim 146152681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 146252681375SJaegeuk Kim continue_unlock: 146352681375SJaegeuk Kim unlock_page(page); 146452681375SJaegeuk Kim continue; 146552681375SJaegeuk Kim } 146652681375SJaegeuk Kim if (ino_of_node(page) != ino) 146752681375SJaegeuk Kim goto continue_unlock; 146852681375SJaegeuk Kim 146952681375SJaegeuk Kim if (!PageDirty(page)) { 147052681375SJaegeuk Kim /* someone wrote it for us */ 147152681375SJaegeuk Kim goto continue_unlock; 147252681375SJaegeuk Kim } 147352681375SJaegeuk Kim 1474608514deSJaegeuk Kim if (last_page) 1475608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1476608514deSJaegeuk Kim 1477608514deSJaegeuk Kim get_page(page); 1478608514deSJaegeuk Kim last_page = page; 1479608514deSJaegeuk Kim unlock_page(page); 1480608514deSJaegeuk Kim } 1481608514deSJaegeuk Kim pagevec_release(&pvec); 1482608514deSJaegeuk Kim cond_resched(); 1483608514deSJaegeuk Kim } 1484608514deSJaegeuk Kim return last_page; 1485608514deSJaegeuk Kim } 1486608514deSJaegeuk Kim 1487d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1488b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 148950fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1490faa24895SJaegeuk Kim { 1491faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1492faa24895SJaegeuk Kim nid_t nid; 1493faa24895SJaegeuk Kim struct node_info ni; 1494faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1495faa24895SJaegeuk Kim .sbi = sbi, 149639d787beSChao Yu .ino = ino_of_node(page), 1497faa24895SJaegeuk Kim .type = NODE, 1498faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1499faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1500faa24895SJaegeuk Kim .page = page, 1501faa24895SJaegeuk Kim .encrypted_page = NULL, 1502d68f735bSJaegeuk Kim .submitted = false, 1503b0af6d49SChao Yu .io_type = io_type, 1504578c6478SYufen Yu .io_wbc = wbc, 1505faa24895SJaegeuk Kim }; 150650fa53ecSChao Yu unsigned int seq; 1507faa24895SJaegeuk Kim 1508faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1509faa24895SJaegeuk Kim 1510868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1511868de613SJaegeuk Kim goto redirty_out; 1512db198ae0SChao Yu 1513faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1514faa24895SJaegeuk Kim goto redirty_out; 1515faa24895SJaegeuk Kim 1516fd8c8cafSChao Yu if (wbc->sync_mode == WB_SYNC_NONE && 1517fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1518fd8c8cafSChao Yu goto redirty_out; 1519fd8c8cafSChao Yu 1520faa24895SJaegeuk Kim /* get old block addr of this node page */ 1521faa24895SJaegeuk Kim nid = nid_of_node(page); 1522faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1523faa24895SJaegeuk Kim 15247735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 15257735730dSChao Yu goto redirty_out; 15267735730dSChao Yu 1527faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1528faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1529faa24895SJaegeuk Kim goto redirty_out; 1530faa24895SJaegeuk Kim } else { 1531faa24895SJaegeuk Kim down_read(&sbi->node_write); 1532faa24895SJaegeuk Kim } 1533faa24895SJaegeuk Kim 1534faa24895SJaegeuk Kim /* This page is already truncated */ 1535faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1536faa24895SJaegeuk Kim ClearPageUptodate(page); 1537faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1538faa24895SJaegeuk Kim up_read(&sbi->node_write); 1539faa24895SJaegeuk Kim unlock_page(page); 1540faa24895SJaegeuk Kim return 0; 1541faa24895SJaegeuk Kim } 1542faa24895SJaegeuk Kim 1543c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 154489d13c38SJaegeuk Kim !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC)) { 154589d13c38SJaegeuk Kim up_read(&sbi->node_write); 1546c9b60788SChao Yu goto redirty_out; 154789d13c38SJaegeuk Kim } 1548c9b60788SChao Yu 1549e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1550e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1551e7c75ab0SJaegeuk Kim 1552faa24895SJaegeuk Kim set_page_writeback(page); 155317c50035SJaegeuk Kim ClearPageError(page); 155450fa53ecSChao Yu 155550fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 155650fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 155750fa53ecSChao Yu if (seq_id) 155850fa53ecSChao Yu *seq_id = seq; 155950fa53ecSChao Yu } 156050fa53ecSChao Yu 1561faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 15624d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1563faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1564faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1565faa24895SJaegeuk Kim up_read(&sbi->node_write); 1566faa24895SJaegeuk Kim 1567d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1568bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); 1569d68f735bSJaegeuk Kim submitted = NULL; 1570d68f735bSJaegeuk Kim } 1571faa24895SJaegeuk Kim 1572faa24895SJaegeuk Kim unlock_page(page); 1573faa24895SJaegeuk Kim 1574d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1575b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1576d68f735bSJaegeuk Kim submitted = NULL; 1577d68f735bSJaegeuk Kim } 1578d68f735bSJaegeuk Kim if (submitted) 1579d68f735bSJaegeuk Kim *submitted = fio.submitted; 1580faa24895SJaegeuk Kim 1581401db79fSYunlong Song if (do_balance) 1582401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1583faa24895SJaegeuk Kim return 0; 1584faa24895SJaegeuk Kim 1585faa24895SJaegeuk Kim redirty_out: 1586faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1587faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1588faa24895SJaegeuk Kim } 1589faa24895SJaegeuk Kim 15904d57b86dSChao Yu void f2fs_move_node_page(struct page *node_page, int gc_type) 1591f15194fcSYunlei He { 1592f15194fcSYunlei He if (gc_type == FG_GC) { 1593f15194fcSYunlei He struct writeback_control wbc = { 1594f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1595f15194fcSYunlei He .nr_to_write = 1, 1596f15194fcSYunlei He .for_reclaim = 0, 1597f15194fcSYunlei He }; 1598f15194fcSYunlei He 1599f15194fcSYunlei He set_page_dirty(node_page); 1600f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1601f15194fcSYunlei He 1602f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1603f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1604f15194fcSYunlei He goto out_page; 1605f15194fcSYunlei He 1606f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 160750fa53ecSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) 1608f15194fcSYunlei He unlock_page(node_page); 1609f15194fcSYunlei He goto release_page; 1610f15194fcSYunlei He } else { 1611f15194fcSYunlei He /* set page dirty and write it */ 1612f15194fcSYunlei He if (!PageWriteback(node_page)) 1613f15194fcSYunlei He set_page_dirty(node_page); 1614f15194fcSYunlei He } 1615f15194fcSYunlei He out_page: 1616f15194fcSYunlei He unlock_page(node_page); 1617f15194fcSYunlei He release_page: 1618f15194fcSYunlei He f2fs_put_page(node_page, 0); 1619f15194fcSYunlei He } 1620f15194fcSYunlei He 1621faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1622faa24895SJaegeuk Kim struct writeback_control *wbc) 1623faa24895SJaegeuk Kim { 162450fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 162550fa53ecSChao Yu FS_NODE_IO, NULL); 1626faa24895SJaegeuk Kim } 1627faa24895SJaegeuk Kim 16284d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 162950fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 163050fa53ecSChao Yu unsigned int *seq_id) 1631608514deSJaegeuk Kim { 1632028a63a6SJan Kara pgoff_t index; 1633608514deSJaegeuk Kim struct pagevec pvec; 1634608514deSJaegeuk Kim int ret = 0; 1635608514deSJaegeuk Kim struct page *last_page = NULL; 1636608514deSJaegeuk Kim bool marked = false; 163726de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1638028a63a6SJan Kara int nr_pages; 1639bab475c5SChao Yu int nwritten = 0; 1640608514deSJaegeuk Kim 1641608514deSJaegeuk Kim if (atomic) { 1642608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1643608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1644608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1645608514deSJaegeuk Kim } 1646608514deSJaegeuk Kim retry: 164786679820SMel Gorman pagevec_init(&pvec); 1648608514deSJaegeuk Kim index = 0; 1649608514deSJaegeuk Kim 1650028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 165167fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1652028a63a6SJan Kara int i; 1653608514deSJaegeuk Kim 1654608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1655608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1656d68f735bSJaegeuk Kim bool submitted = false; 1657608514deSJaegeuk Kim 1658608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1659608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1660608514deSJaegeuk Kim pagevec_release(&pvec); 16619de69279SChao Yu ret = -EIO; 16629de69279SChao Yu goto out; 1663608514deSJaegeuk Kim } 1664608514deSJaegeuk Kim 1665608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1666608514deSJaegeuk Kim continue; 1667608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1668608514deSJaegeuk Kim continue; 1669608514deSJaegeuk Kim 1670608514deSJaegeuk Kim lock_page(page); 1671608514deSJaegeuk Kim 1672608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1673608514deSJaegeuk Kim continue_unlock: 1674608514deSJaegeuk Kim unlock_page(page); 1675608514deSJaegeuk Kim continue; 1676608514deSJaegeuk Kim } 1677608514deSJaegeuk Kim if (ino_of_node(page) != ino) 167852681375SJaegeuk Kim goto continue_unlock; 167952681375SJaegeuk Kim 1680608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1681608514deSJaegeuk Kim /* someone wrote it for us */ 1682608514deSJaegeuk Kim goto continue_unlock; 1683608514deSJaegeuk Kim } 1684608514deSJaegeuk Kim 1685608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1686608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1687608514deSJaegeuk Kim 1688d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1689d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1690d29fd172SJaegeuk Kim 1691608514deSJaegeuk Kim if (!atomic || page == last_page) { 169252681375SJaegeuk Kim set_fsync_mark(page, 1); 169326de9b11SJaegeuk Kim if (IS_INODE(page)) { 169426de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 169526de9b11SJaegeuk Kim FI_DIRTY_INODE)) 16964d57b86dSChao Yu f2fs_update_inode(inode, page); 169752681375SJaegeuk Kim set_dentry_mark(page, 16984d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 169926de9b11SJaegeuk Kim } 1700608514deSJaegeuk Kim /* may be written by other thread */ 1701608514deSJaegeuk Kim if (!PageDirty(page)) 1702608514deSJaegeuk Kim set_page_dirty(page); 1703608514deSJaegeuk Kim } 1704608514deSJaegeuk Kim 1705608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1706608514deSJaegeuk Kim goto continue_unlock; 170752681375SJaegeuk Kim 1708e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1709d68f735bSJaegeuk Kim page == last_page, 1710b0af6d49SChao Yu &submitted, wbc, true, 171150fa53ecSChao Yu FS_NODE_IO, seq_id); 1712c267ec15SJaegeuk Kim if (ret) { 171352681375SJaegeuk Kim unlock_page(page); 1714608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1715608514deSJaegeuk Kim break; 1716d68f735bSJaegeuk Kim } else if (submitted) { 1717bab475c5SChao Yu nwritten++; 1718608514deSJaegeuk Kim } 17193f5f4959SChao Yu 1720608514deSJaegeuk Kim if (page == last_page) { 1721608514deSJaegeuk Kim f2fs_put_page(page, 0); 1722608514deSJaegeuk Kim marked = true; 172352681375SJaegeuk Kim break; 172452681375SJaegeuk Kim } 1725c267ec15SJaegeuk Kim } 172652681375SJaegeuk Kim pagevec_release(&pvec); 172752681375SJaegeuk Kim cond_resched(); 172852681375SJaegeuk Kim 1729608514deSJaegeuk Kim if (ret || marked) 173052681375SJaegeuk Kim break; 173152681375SJaegeuk Kim } 1732608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1733608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1734608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1735608514deSJaegeuk Kim ino, last_page->index); 1736608514deSJaegeuk Kim lock_page(last_page); 1737d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1738608514deSJaegeuk Kim set_page_dirty(last_page); 1739608514deSJaegeuk Kim unlock_page(last_page); 1740608514deSJaegeuk Kim goto retry; 1741608514deSJaegeuk Kim } 17429de69279SChao Yu out: 1743bab475c5SChao Yu if (nwritten) 1744bab475c5SChao Yu f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); 1745c267ec15SJaegeuk Kim return ret ? -EIO: 0; 174652681375SJaegeuk Kim } 174752681375SJaegeuk Kim 17484d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 17494d57b86dSChao Yu struct writeback_control *wbc, 1750b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 175152681375SJaegeuk Kim { 1752028a63a6SJan Kara pgoff_t index; 175352681375SJaegeuk Kim struct pagevec pvec; 175452681375SJaegeuk Kim int step = 0; 175512bb0a8fSJaegeuk Kim int nwritten = 0; 17563f5f4959SChao Yu int ret = 0; 1757c29fd0c0SChao Yu int nr_pages, done = 0; 1758e05df3b1SJaegeuk Kim 175986679820SMel Gorman pagevec_init(&pvec); 1760e05df3b1SJaegeuk Kim 1761e05df3b1SJaegeuk Kim next_step: 1762e05df3b1SJaegeuk Kim index = 0; 1763e05df3b1SJaegeuk Kim 1764c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1765c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1766028a63a6SJan Kara int i; 1767e05df3b1SJaegeuk Kim 1768e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1769e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1770d68f735bSJaegeuk Kim bool submitted = false; 1771e05df3b1SJaegeuk Kim 1772c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1773c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1774c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1775c29fd0c0SChao Yu done = 1; 1776c29fd0c0SChao Yu break; 1777c29fd0c0SChao Yu } 1778c29fd0c0SChao Yu 1779e05df3b1SJaegeuk Kim /* 1780e05df3b1SJaegeuk Kim * flushing sequence with step: 1781e05df3b1SJaegeuk Kim * 0. indirect nodes 1782e05df3b1SJaegeuk Kim * 1. dentry dnodes 1783e05df3b1SJaegeuk Kim * 2. file dnodes 1784e05df3b1SJaegeuk Kim */ 1785e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1786e05df3b1SJaegeuk Kim continue; 1787e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1788e05df3b1SJaegeuk Kim is_cold_node(page))) 1789e05df3b1SJaegeuk Kim continue; 1790e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1791e05df3b1SJaegeuk Kim !is_cold_node(page))) 1792e05df3b1SJaegeuk Kim continue; 17939a4cbc9eSChao Yu lock_node: 17944b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 17954b270a8cSChao Yu lock_page(page); 17964b270a8cSChao Yu else if (!trylock_page(page)) 1797e05df3b1SJaegeuk Kim continue; 1798e05df3b1SJaegeuk Kim 17994ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1800e05df3b1SJaegeuk Kim continue_unlock: 1801e05df3b1SJaegeuk Kim unlock_page(page); 1802e05df3b1SJaegeuk Kim continue; 1803e05df3b1SJaegeuk Kim } 1804e05df3b1SJaegeuk Kim 1805e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1806e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1807e05df3b1SJaegeuk Kim goto continue_unlock; 1808e05df3b1SJaegeuk Kim } 1809e05df3b1SJaegeuk Kim 18102049d4fcSJaegeuk Kim /* flush inline_data */ 181152681375SJaegeuk Kim if (is_inline_node(page)) { 18122049d4fcSJaegeuk Kim clear_inline_node(page); 18132049d4fcSJaegeuk Kim unlock_page(page); 18142049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 18159a4cbc9eSChao Yu goto lock_node; 18162049d4fcSJaegeuk Kim } 18172049d4fcSJaegeuk Kim 1818fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1819fa3d2bdfSJaegeuk Kim 1820fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1821e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1822e05df3b1SJaegeuk Kim goto continue_unlock; 1823e05df3b1SJaegeuk Kim 1824e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1825e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 182652746519SJaegeuk Kim 1827401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 182850fa53ecSChao Yu wbc, do_balance, io_type, NULL); 1829d68f735bSJaegeuk Kim if (ret) 183052746519SJaegeuk Kim unlock_page(page); 1831d68f735bSJaegeuk Kim else if (submitted) 18323f5f4959SChao Yu nwritten++; 1833e05df3b1SJaegeuk Kim 1834e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1835e05df3b1SJaegeuk Kim break; 1836e05df3b1SJaegeuk Kim } 1837e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1838e05df3b1SJaegeuk Kim cond_resched(); 1839e05df3b1SJaegeuk Kim 1840e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1841e05df3b1SJaegeuk Kim step = 2; 1842e05df3b1SJaegeuk Kim break; 1843e05df3b1SJaegeuk Kim } 1844e05df3b1SJaegeuk Kim } 1845e05df3b1SJaegeuk Kim 1846e05df3b1SJaegeuk Kim if (step < 2) { 1847fd8c8cafSChao Yu if (wbc->sync_mode == WB_SYNC_NONE && step == 1) 1848fd8c8cafSChao Yu goto out; 1849e05df3b1SJaegeuk Kim step++; 1850e05df3b1SJaegeuk Kim goto next_step; 1851e05df3b1SJaegeuk Kim } 1852fd8c8cafSChao Yu out: 18533f5f4959SChao Yu if (nwritten) 1854b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1855db198ae0SChao Yu 1856db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1857db198ae0SChao Yu return -EIO; 18583f5f4959SChao Yu return ret; 1859e05df3b1SJaegeuk Kim } 1860e05df3b1SJaegeuk Kim 186150fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 186250fa53ecSChao Yu unsigned int seq_id) 1863cfe58f9dSJaegeuk Kim { 186450fa53ecSChao Yu struct fsync_node_entry *fn; 186550fa53ecSChao Yu struct page *page; 186650fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 186750fa53ecSChao Yu unsigned long flags; 186850fa53ecSChao Yu unsigned int cur_seq_id = 0; 1869280db3c8SMiklos Szeredi int ret2, ret = 0; 1870cfe58f9dSJaegeuk Kim 187150fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 187250fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 187350fa53ecSChao Yu if (list_empty(head)) { 187450fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 187550fa53ecSChao Yu break; 187650fa53ecSChao Yu } 187750fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 187850fa53ecSChao Yu if (fn->seq_id > seq_id) { 187950fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 188050fa53ecSChao Yu break; 188150fa53ecSChao Yu } 188250fa53ecSChao Yu cur_seq_id = fn->seq_id; 188350fa53ecSChao Yu page = fn->page; 188450fa53ecSChao Yu get_page(page); 188550fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 18864ef51a8fSJaegeuk Kim 1887fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1888cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1889cfe58f9dSJaegeuk Kim ret = -EIO; 189050fa53ecSChao Yu 189150fa53ecSChao Yu put_page(page); 189250fa53ecSChao Yu 189350fa53ecSChao Yu if (ret) 189450fa53ecSChao Yu break; 1895cfe58f9dSJaegeuk Kim } 1896cfe58f9dSJaegeuk Kim 1897280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1898cfe58f9dSJaegeuk Kim if (!ret) 1899cfe58f9dSJaegeuk Kim ret = ret2; 190050fa53ecSChao Yu 1901cfe58f9dSJaegeuk Kim return ret; 1902cfe58f9dSJaegeuk Kim } 1903cfe58f9dSJaegeuk Kim 1904e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1905e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1906e05df3b1SJaegeuk Kim { 19074081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 19089dfa1bafSJaegeuk Kim struct blk_plug plug; 190950c8cdb3SJaegeuk Kim long diff; 1910e05df3b1SJaegeuk Kim 19110771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 19120771fcc7SChao Yu goto skip_write; 19130771fcc7SChao Yu 19144660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 19154660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1916e05df3b1SJaegeuk Kim 1917a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 191887d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1919d3baf95dSJaegeuk Kim goto skip_write; 1920a7fdffbdSJaegeuk Kim 1921c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1922c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1923c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1924c29fd0c0SChao Yu goto skip_write; 1925c29fd0c0SChao Yu 1926d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1927d31c7c3fSYunlei He 192850c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 19299dfa1bafSJaegeuk Kim blk_start_plug(&plug); 19304d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 19319dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 193250c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1933c29fd0c0SChao Yu 1934c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1935c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 1936e05df3b1SJaegeuk Kim return 0; 1937d3baf95dSJaegeuk Kim 1938d3baf95dSJaegeuk Kim skip_write: 1939d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1940d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1941d3baf95dSJaegeuk Kim return 0; 1942e05df3b1SJaegeuk Kim } 1943e05df3b1SJaegeuk Kim 1944e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1945e05df3b1SJaegeuk Kim { 194626c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 194726c6b887SJaegeuk Kim 1948237c0790SJaegeuk Kim if (!PageUptodate(page)) 1949e05df3b1SJaegeuk Kim SetPageUptodate(page); 195054c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 195154c55c4eSWeichao Guo if (IS_INODE(page)) 195254c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 195354c55c4eSWeichao Guo #endif 1954e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1955b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 19564081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1957e05df3b1SJaegeuk Kim SetPagePrivate(page); 19589e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1959e05df3b1SJaegeuk Kim return 1; 1960e05df3b1SJaegeuk Kim } 1961e05df3b1SJaegeuk Kim return 0; 1962e05df3b1SJaegeuk Kim } 1963e05df3b1SJaegeuk Kim 19640a8165d7SJaegeuk Kim /* 1965e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1966e05df3b1SJaegeuk Kim */ 1967e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1968e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1969e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1970e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1971487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1972487261f3SChao Yu .releasepage = f2fs_release_page, 19735b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 19745b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 19755b7a487cSWeichao Guo #endif 1976e05df3b1SJaegeuk Kim }; 1977e05df3b1SJaegeuk Kim 19788a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 19798a7ed66aSJaegeuk Kim nid_t n) 1980e05df3b1SJaegeuk Kim { 19818a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 19823aa770a9SNamjae Jeon } 1983e05df3b1SJaegeuk Kim 19849a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1985a0761f63SFan Li struct free_nid *i, enum nid_state state) 1986e05df3b1SJaegeuk Kim { 1987b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1988b8559dc2SChao Yu 1989eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1990eb0aa4b8SJaegeuk Kim if (err) 1991eb0aa4b8SJaegeuk Kim return err; 1992eb0aa4b8SJaegeuk Kim 19939a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 19949a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 19959a4ffdf5SChao Yu if (state == FREE_NID) 19969a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1997eb0aa4b8SJaegeuk Kim return 0; 1998b8559dc2SChao Yu } 1999b8559dc2SChao Yu 20009a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 2001a0761f63SFan Li struct free_nid *i, enum nid_state state) 2002b8559dc2SChao Yu { 2003b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2004b8559dc2SChao Yu 20059a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 20069a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 20079a4ffdf5SChao Yu if (state == FREE_NID) 2008e05df3b1SJaegeuk Kim list_del(&i->list); 20098a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 2010e05df3b1SJaegeuk Kim } 2011e05df3b1SJaegeuk Kim 2012a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 2013a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 2014a0761f63SFan Li { 2015a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 2016a0761f63SFan Li 2017a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 2018a0761f63SFan Li i->state = dst_state; 2019a0761f63SFan Li nm_i->nid_cnt[org_state]--; 2020a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 2021a0761f63SFan Li 2022a0761f63SFan Li switch (dst_state) { 2023a0761f63SFan Li case PREALLOC_NID: 2024a0761f63SFan Li list_del(&i->list); 2025a0761f63SFan Li break; 2026a0761f63SFan Li case FREE_NID: 2027a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 2028a0761f63SFan Li break; 2029a0761f63SFan Li default: 2030a0761f63SFan Li BUG_ON(1); 2031a0761f63SFan Li } 2032a0761f63SFan Li } 2033a0761f63SFan Li 20345921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 20355921aaa1SLiFan bool set, bool build) 20365921aaa1SLiFan { 20375921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 20385921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 20395921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 20405921aaa1SLiFan 20415921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 20425921aaa1SLiFan return; 20435921aaa1SLiFan 20445921aaa1SLiFan if (set) { 20455921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 20465921aaa1SLiFan return; 20475921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 20485921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 20495921aaa1SLiFan } else { 20505921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 20515921aaa1SLiFan return; 20525921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 20535921aaa1SLiFan if (!build) 20545921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 20555921aaa1SLiFan } 20565921aaa1SLiFan } 20575921aaa1SLiFan 20584ac91242SChao Yu /* return if the nid is recognized as free */ 20595921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 20605921aaa1SLiFan nid_t nid, bool build, bool update) 2061e05df3b1SJaegeuk Kim { 20626fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 206330a61ddfSChao Yu struct free_nid *i, *e; 206459bbd474SJaegeuk Kim struct nat_entry *ne; 206530a61ddfSChao Yu int err = -EINVAL; 206630a61ddfSChao Yu bool ret = false; 20679198acebSJaegeuk Kim 20689198acebSJaegeuk Kim /* 0 nid should not be used */ 2069cfb271d4SChao Yu if (unlikely(nid == 0)) 20704ac91242SChao Yu return false; 207159bbd474SJaegeuk Kim 20727bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 2073e05df3b1SJaegeuk Kim i->nid = nid; 20749a4ffdf5SChao Yu i->state = FREE_NID; 2075e05df3b1SJaegeuk Kim 20765921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2077769ec6e5SJaegeuk Kim 2078b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 207930a61ddfSChao Yu 208030a61ddfSChao Yu if (build) { 208130a61ddfSChao Yu /* 208230a61ddfSChao Yu * Thread A Thread B 208330a61ddfSChao Yu * - f2fs_create 208430a61ddfSChao Yu * - f2fs_new_inode 20854d57b86dSChao Yu * - f2fs_alloc_nid 20869a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 208730a61ddfSChao Yu * - f2fs_balance_fs_bg 20884d57b86dSChao Yu * - f2fs_build_free_nids 20894d57b86dSChao Yu * - __f2fs_build_free_nids 209030a61ddfSChao Yu * - scan_nat_page 209130a61ddfSChao Yu * - add_free_nid 209230a61ddfSChao Yu * - __lookup_nat_cache 209330a61ddfSChao Yu * - f2fs_add_link 20944d57b86dSChao Yu * - f2fs_init_inode_metadata 20954d57b86dSChao Yu * - f2fs_new_inode_page 20964d57b86dSChao Yu * - f2fs_new_node_page 209730a61ddfSChao Yu * - set_node_addr 20984d57b86dSChao Yu * - f2fs_alloc_nid_done 20999a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 21009a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 210130a61ddfSChao Yu */ 210230a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 210330a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 210430a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 210530a61ddfSChao Yu goto err_out; 210630a61ddfSChao Yu 210730a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 210830a61ddfSChao Yu if (e) { 21099a4ffdf5SChao Yu if (e->state == FREE_NID) 211030a61ddfSChao Yu ret = true; 211130a61ddfSChao Yu goto err_out; 211230a61ddfSChao Yu } 211330a61ddfSChao Yu } 211430a61ddfSChao Yu ret = true; 2115a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 211630a61ddfSChao Yu err_out: 21175921aaa1SLiFan if (update) { 21185921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 21195921aaa1SLiFan if (!build) 21205921aaa1SLiFan nm_i->available_nids++; 21215921aaa1SLiFan } 2122b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2123769ec6e5SJaegeuk Kim radix_tree_preload_end(); 21245921aaa1SLiFan 212530a61ddfSChao Yu if (err) 2126e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 212730a61ddfSChao Yu return ret; 2128e05df3b1SJaegeuk Kim } 2129e05df3b1SJaegeuk Kim 2130b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2131e05df3b1SJaegeuk Kim { 2132b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2133e05df3b1SJaegeuk Kim struct free_nid *i; 2134cf0ee0f0SChao Yu bool need_free = false; 2135cf0ee0f0SChao Yu 2136b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21378a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 21389a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2139a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2140cf0ee0f0SChao Yu need_free = true; 2141e05df3b1SJaegeuk Kim } 2142b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2143cf0ee0f0SChao Yu 2144cf0ee0f0SChao Yu if (need_free) 2145cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2146e05df3b1SJaegeuk Kim } 2147e05df3b1SJaegeuk Kim 2148e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2149e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2150e05df3b1SJaegeuk Kim { 21516fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2152e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2153e05df3b1SJaegeuk Kim block_t blk_addr; 21544ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2155e05df3b1SJaegeuk Kim int i; 2156e05df3b1SJaegeuk Kim 215723380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 21584ac91242SChao Yu 2159e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2160e05df3b1SJaegeuk Kim 2161e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2162cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 216304431c44SJaegeuk Kim break; 216423d38844SHaicheng Li 2165e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2166e2374015SChao Yu 2167e2374015SChao Yu if (blk_addr == NEW_ADDR) 2168e2374015SChao Yu return -EINVAL; 2169e2374015SChao Yu 21705921aaa1SLiFan if (blk_addr == NULL_ADDR) { 21715921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 21725921aaa1SLiFan } else { 2173346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 21745921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2175346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2176e05df3b1SJaegeuk Kim } 2177e05df3b1SJaegeuk Kim } 2178e2374015SChao Yu 2179e2374015SChao Yu return 0; 21805921aaa1SLiFan } 2181e05df3b1SJaegeuk Kim 21822fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 21834ac91242SChao Yu { 21844ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 21854ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 21862fbaa25fSChao Yu int i; 21874ac91242SChao Yu 21884ac91242SChao Yu down_read(&curseg->journal_rwsem); 21894ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 21904ac91242SChao Yu block_t addr; 21914ac91242SChao Yu nid_t nid; 21924ac91242SChao Yu 21934ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 21944ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 21954ac91242SChao Yu if (addr == NULL_ADDR) 21965921aaa1SLiFan add_free_nid(sbi, nid, true, false); 21974ac91242SChao Yu else 21984ac91242SChao Yu remove_free_nid(sbi, nid); 21994ac91242SChao Yu } 22004ac91242SChao Yu up_read(&curseg->journal_rwsem); 22012fbaa25fSChao Yu } 22022fbaa25fSChao Yu 2203e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 22044ac91242SChao Yu { 22054ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 22064ac91242SChao Yu unsigned int i, idx; 220797456574SFan Li nid_t nid; 22084ac91242SChao Yu 22094ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 22104ac91242SChao Yu 22114ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 22124ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 22134ac91242SChao Yu continue; 22144ac91242SChao Yu if (!nm_i->free_nid_count[i]) 22154ac91242SChao Yu continue; 22164ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 221797456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 221897456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 221997456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 222097456574SFan Li break; 22214ac91242SChao Yu 22224ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 22235921aaa1SLiFan add_free_nid(sbi, nid, true, false); 22244ac91242SChao Yu 22259a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 22264ac91242SChao Yu goto out; 22274ac91242SChao Yu } 22284ac91242SChao Yu } 22294ac91242SChao Yu out: 22302fbaa25fSChao Yu scan_curseg_cache(sbi); 22314ac91242SChao Yu 22324ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 22334ac91242SChao Yu } 22344ac91242SChao Yu 2235e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 22364d57b86dSChao Yu bool sync, bool mount) 2237e05df3b1SJaegeuk Kim { 2238e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2239e2374015SChao Yu int i = 0, ret; 224055008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2241e05df3b1SJaegeuk Kim 2242e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2243e9cdd307SYunlei He nid = 0; 2244e9cdd307SYunlei He 224555008d84SJaegeuk Kim /* Enough entries */ 22469a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2247e2374015SChao Yu return 0; 2248e05df3b1SJaegeuk Kim 22494d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2250e2374015SChao Yu return 0; 2251e05df3b1SJaegeuk Kim 22524ac91242SChao Yu if (!mount) { 22534ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 22544ac91242SChao Yu scan_free_nid_bits(sbi); 22554ac91242SChao Yu 225674986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2257e2374015SChao Yu return 0; 225822ad0b6aSJaegeuk Kim } 225922ad0b6aSJaegeuk Kim 226055008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 22614d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 226226879fb1SChao Yu META_NAT, true); 2263e05df3b1SJaegeuk Kim 2264b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2265a5131193SJaegeuk Kim 2266e05df3b1SJaegeuk Kim while (1) { 226766e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 226866e83361SYunlei He nm_i->nat_block_bitmap)) { 2269e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2270e05df3b1SJaegeuk Kim 2271edc55aafSJaegeuk Kim if (IS_ERR(page)) { 2272edc55aafSJaegeuk Kim ret = PTR_ERR(page); 2273edc55aafSJaegeuk Kim } else { 2274e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2275e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2276edc55aafSJaegeuk Kim } 2277e2374015SChao Yu 2278e2374015SChao Yu if (ret) { 2279e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2280e2374015SChao Yu f2fs_bug_on(sbi, !mount); 2281e2374015SChao Yu f2fs_msg(sbi->sb, KERN_ERR, 2282e2374015SChao Yu "NAT is corrupt, run fsck to fix it"); 2283edc55aafSJaegeuk Kim return ret; 2284e2374015SChao Yu } 228566e83361SYunlei He } 2286e05df3b1SJaegeuk Kim 2287e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2288cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2289e05df3b1SJaegeuk Kim nid = 0; 229055008d84SJaegeuk Kim 2291a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2292e05df3b1SJaegeuk Kim break; 2293e05df3b1SJaegeuk Kim } 2294e05df3b1SJaegeuk Kim 229555008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 229655008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2297e05df3b1SJaegeuk Kim 2298e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 22992fbaa25fSChao Yu scan_curseg_cache(sbi); 2300dfc08a12SChao Yu 2301b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23022db2388fSChao Yu 23034d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2304ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2305e2374015SChao Yu 2306e2374015SChao Yu return 0; 2307e05df3b1SJaegeuk Kim } 2308e05df3b1SJaegeuk Kim 2309e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 23102411cf5bSChao Yu { 2311e2374015SChao Yu int ret; 2312e2374015SChao Yu 23132411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2314e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 23152411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2316e2374015SChao Yu 2317e2374015SChao Yu return ret; 23182411cf5bSChao Yu } 23192411cf5bSChao Yu 2320e05df3b1SJaegeuk Kim /* 2321e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2322e05df3b1SJaegeuk Kim * from second parameter of this function. 2323e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2324e05df3b1SJaegeuk Kim */ 23254d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2326e05df3b1SJaegeuk Kim { 2327e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2328e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2329e05df3b1SJaegeuk Kim retry: 233055523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 233155523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2332cb78942bSJaegeuk Kim return false; 233355523519SChao Yu } 23347fa750a1SArnd Bergmann 2335b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2336e05df3b1SJaegeuk Kim 233704d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 233804d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 233904d47e67SChao Yu return false; 234004d47e67SChao Yu } 2341e05df3b1SJaegeuk Kim 23424d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 23434d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 23449a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 23459a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2346b8559dc2SChao Yu struct free_nid, list); 2347e05df3b1SJaegeuk Kim *nid = i->nid; 2348b8559dc2SChao Yu 2349a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 235004d47e67SChao Yu nm_i->available_nids--; 23514ac91242SChao Yu 2352346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 23534ac91242SChao Yu 2354b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2355e05df3b1SJaegeuk Kim return true; 2356e05df3b1SJaegeuk Kim } 2357b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 235855008d84SJaegeuk Kim 235955008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 2360f84262b0SJaegeuk Kim if (!f2fs_build_free_nids(sbi, true, false)) 236155008d84SJaegeuk Kim goto retry; 2362f84262b0SJaegeuk Kim return false; 236355008d84SJaegeuk Kim } 2364e05df3b1SJaegeuk Kim 23650a8165d7SJaegeuk Kim /* 23664d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2367e05df3b1SJaegeuk Kim */ 23684d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2369e05df3b1SJaegeuk Kim { 2370e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2371e05df3b1SJaegeuk Kim struct free_nid *i; 2372e05df3b1SJaegeuk Kim 2373b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23748a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2375b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2376a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2377b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2378cf0ee0f0SChao Yu 2379cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2380e05df3b1SJaegeuk Kim } 2381e05df3b1SJaegeuk Kim 23820a8165d7SJaegeuk Kim /* 23834d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2384e05df3b1SJaegeuk Kim */ 23854d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2386e05df3b1SJaegeuk Kim { 238749952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 238849952fa1SJaegeuk Kim struct free_nid *i; 2389cf0ee0f0SChao Yu bool need_free = false; 239049952fa1SJaegeuk Kim 239165985d93SJaegeuk Kim if (!nid) 239265985d93SJaegeuk Kim return; 239365985d93SJaegeuk Kim 2394b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23958a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2396b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2397b8559dc2SChao Yu 23984d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2399a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2400cf0ee0f0SChao Yu need_free = true; 240195630cbaSHaicheng Li } else { 2402a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 240395630cbaSHaicheng Li } 240404d47e67SChao Yu 240504d47e67SChao Yu nm_i->available_nids++; 240604d47e67SChao Yu 2407346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 24084ac91242SChao Yu 2409b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2410cf0ee0f0SChao Yu 2411cf0ee0f0SChao Yu if (need_free) 2412cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2413e05df3b1SJaegeuk Kim } 2414e05df3b1SJaegeuk Kim 24154d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 241631696580SChao Yu { 241731696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 241831696580SChao Yu struct free_nid *i, *next; 241931696580SChao Yu int nr = nr_shrink; 242031696580SChao Yu 24219a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2422ad4edb83SJaegeuk Kim return 0; 2423ad4edb83SJaegeuk Kim 242431696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 242531696580SChao Yu return 0; 242631696580SChao Yu 2427b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 24289a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2429b8559dc2SChao Yu if (nr_shrink <= 0 || 24309a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 243131696580SChao Yu break; 2432b8559dc2SChao Yu 2433a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 243431696580SChao Yu kmem_cache_free(free_nid_slab, i); 243531696580SChao Yu nr_shrink--; 243631696580SChao Yu } 2437b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 243831696580SChao Yu mutex_unlock(&nm_i->build_lock); 243931696580SChao Yu 244031696580SChao Yu return nr - nr_shrink; 244131696580SChao Yu } 244231696580SChao Yu 24434d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 244428cdce04SChao Yu { 244528cdce04SChao Yu void *src_addr, *dst_addr; 244628cdce04SChao Yu size_t inline_size; 244728cdce04SChao Yu struct page *ipage; 244828cdce04SChao Yu struct f2fs_inode *ri; 244928cdce04SChao Yu 24504d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 24519850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 245228cdce04SChao Yu 2453e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 24541eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 24551eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 24561eca05aaSYunlei He } else { 245791942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2458e3b4d43fSJaegeuk Kim goto update_inode; 2459e3b4d43fSJaegeuk Kim } 2460e3b4d43fSJaegeuk Kim 24616afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 24626afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 246328cdce04SChao Yu inline_size = inline_xattr_size(inode); 246428cdce04SChao Yu 2465fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 246628cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2467e3b4d43fSJaegeuk Kim update_inode: 24684d57b86dSChao Yu f2fs_update_inode(inode, ipage); 246928cdce04SChao Yu f2fs_put_page(ipage, 1); 247028cdce04SChao Yu } 247128cdce04SChao Yu 24724d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2473abb2366cSJaegeuk Kim { 24744081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2475abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 247687905682SYunlei He nid_t new_xnid; 247787905682SYunlei He struct dnode_of_data dn; 2478abb2366cSJaegeuk Kim struct node_info ni; 2479d260081cSChao Yu struct page *xpage; 24807735730dSChao Yu int err; 2481abb2366cSJaegeuk Kim 2482abb2366cSJaegeuk Kim if (!prev_xnid) 2483abb2366cSJaegeuk Kim goto recover_xnid; 2484abb2366cSJaegeuk Kim 2485d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 24867735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 24877735730dSChao Yu if (err) 24887735730dSChao Yu return err; 24897735730dSChao Yu 24904d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2491000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2492479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2493abb2366cSJaegeuk Kim 2494abb2366cSJaegeuk Kim recover_xnid: 2495d260081cSChao Yu /* 2: update xattr nid in inode */ 24964d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 249787905682SYunlei He return -ENOSPC; 249887905682SYunlei He 249987905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 25004d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 250187905682SYunlei He if (IS_ERR(xpage)) { 25024d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 250387905682SYunlei He return PTR_ERR(xpage); 250487905682SYunlei He } 250587905682SYunlei He 25064d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 25074d57b86dSChao Yu f2fs_update_inode_page(inode); 2508abb2366cSJaegeuk Kim 2509d260081cSChao Yu /* 3: update and set xattr node page dirty */ 251087905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2511d260081cSChao Yu 2512d260081cSChao Yu set_page_dirty(xpage); 2513d260081cSChao Yu f2fs_put_page(xpage, 1); 2514abb2366cSJaegeuk Kim 2515d260081cSChao Yu return 0; 2516abb2366cSJaegeuk Kim } 2517abb2366cSJaegeuk Kim 25184d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2519e05df3b1SJaegeuk Kim { 252058bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2521e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2522e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2523e05df3b1SJaegeuk Kim struct page *ipage; 25247735730dSChao Yu int err; 2525e05df3b1SJaegeuk Kim 25267735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 25277735730dSChao Yu if (err) 25287735730dSChao Yu return err; 2529e8271fa3SJaegeuk Kim 2530e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2531e8271fa3SJaegeuk Kim return -EINVAL; 2532e8ea9b3dSJaegeuk Kim retry: 2533300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2534e8ea9b3dSJaegeuk Kim if (!ipage) { 2535e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2536e8ea9b3dSJaegeuk Kim goto retry; 2537e8ea9b3dSJaegeuk Kim } 2538e05df3b1SJaegeuk Kim 2539e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2540b8559dc2SChao Yu remove_free_nid(sbi, ino); 2541e05df3b1SJaegeuk Kim 2542237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2543e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2544e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2545c5667575SChao Yu set_cold_node(page, false); 2546e05df3b1SJaegeuk Kim 254758bfaf44SJaegeuk Kim src = F2FS_INODE(page); 254858bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2549e05df3b1SJaegeuk Kim 255058bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 255158bfaf44SJaegeuk Kim dst->i_size = 0; 255258bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 255358bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 255458bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 25557a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 25565c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 25577a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 25586afc662eSChao Yu 25596afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 25606afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25616afc662eSChao Yu i_inline_xattr_size)) 25626afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 25636afc662eSChao Yu 25645c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 25655c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25665c57132eSChao Yu i_projid)) 25675c57132eSChao Yu dst->i_projid = src->i_projid; 25685cd1f387SChao Yu 25695cd1f387SChao Yu if (f2fs_sb_has_inode_crtime(sbi->sb) && 25705cd1f387SChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25715cd1f387SChao Yu i_crtime_nsec)) { 25725cd1f387SChao Yu dst->i_crtime = src->i_crtime; 25735cd1f387SChao Yu dst->i_crtime_nsec = src->i_crtime_nsec; 25745cd1f387SChao Yu } 25755c57132eSChao Yu } 2576e05df3b1SJaegeuk Kim 2577e05df3b1SJaegeuk Kim new_ni = old_ni; 2578e05df3b1SJaegeuk Kim new_ni.ino = ino; 2579e05df3b1SJaegeuk Kim 25800abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 258165e5cd0aSJaegeuk Kim WARN_ON(1); 2582479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2583e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2584617deb8cSJaegeuk Kim set_page_dirty(ipage); 2585e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2586e05df3b1SJaegeuk Kim return 0; 2587e05df3b1SJaegeuk Kim } 2588e05df3b1SJaegeuk Kim 25897735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2590e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2591e05df3b1SJaegeuk Kim { 2592e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2593e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2594e05df3b1SJaegeuk Kim block_t addr; 25959ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2596e05df3b1SJaegeuk Kim 2597e05df3b1SJaegeuk Kim /* scan the node segment */ 2598e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2599e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2600e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2601e05df3b1SJaegeuk Kim 26029ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2603664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2604393ff91fSJaegeuk Kim 26059af0ff1cSChao Yu /* readahead node pages */ 26064d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 26079af0ff1cSChao Yu 26089ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 26094d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2610393ff91fSJaegeuk Kim 26117735730dSChao Yu if (IS_ERR(page)) 26127735730dSChao Yu return PTR_ERR(page); 26137735730dSChao Yu 26149ecf4b80SChao Yu rn = F2FS_NODE(page); 2615393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2616393ff91fSJaegeuk Kim sum_entry->version = 0; 2617393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 26189af0ff1cSChao Yu sum_entry++; 26199ecf4b80SChao Yu f2fs_put_page(page, 1); 26209af0ff1cSChao Yu } 2621bac4eef6SChao Yu 26229ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2623bac4eef6SChao Yu addr + nrpages); 26249af0ff1cSChao Yu } 26257735730dSChao Yu return 0; 2626e05df3b1SJaegeuk Kim } 2627e05df3b1SJaegeuk Kim 2628aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2629e05df3b1SJaegeuk Kim { 2630e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2631e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2632b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2633e05df3b1SJaegeuk Kim int i; 2634e05df3b1SJaegeuk Kim 2635b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2636dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2637e05df3b1SJaegeuk Kim struct nat_entry *ne; 2638e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2639dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2640e05df3b1SJaegeuk Kim 2641dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 26429be32d72SJaegeuk Kim 2643e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2644e05df3b1SJaegeuk Kim if (!ne) { 264512f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 264612f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 26479be32d72SJaegeuk Kim } 264804d47e67SChao Yu 264904d47e67SChao Yu /* 265004d47e67SChao Yu * if a free nat in journal has not been used after last 265104d47e67SChao Yu * checkpoint, we should remove it from available nids, 265204d47e67SChao Yu * since later we will add it again. 265304d47e67SChao Yu */ 265404d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 265504d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 265604d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 265704d47e67SChao Yu nm_i->available_nids--; 265804d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 265904d47e67SChao Yu } 266004d47e67SChao Yu 2661e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2662e05df3b1SJaegeuk Kim } 2663dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2664b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2665e05df3b1SJaegeuk Kim } 2666e05df3b1SJaegeuk Kim 2667309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2668309cc2b6SJaegeuk Kim struct list_head *head, int max) 2669e05df3b1SJaegeuk Kim { 2670309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2671e05df3b1SJaegeuk Kim 2672309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2673309cc2b6SJaegeuk Kim goto add_out; 2674e05df3b1SJaegeuk Kim 2675309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2676309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2677309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2678309cc2b6SJaegeuk Kim return; 2679309cc2b6SJaegeuk Kim } 2680309cc2b6SJaegeuk Kim } 2681309cc2b6SJaegeuk Kim add_out: 2682309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2683aec71382SChao Yu } 2684aec71382SChao Yu 26859f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 268622ad0b6aSJaegeuk Kim struct page *page) 268722ad0b6aSJaegeuk Kim { 268822ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 268922ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 269022ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 269122ad0b6aSJaegeuk Kim int valid = 0; 269237a0ab2aSFan Li int i = 0; 269322ad0b6aSJaegeuk Kim 269422ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 269522ad0b6aSJaegeuk Kim return; 269622ad0b6aSJaegeuk Kim 269737a0ab2aSFan Li if (nat_index == 0) { 269837a0ab2aSFan Li valid = 1; 269937a0ab2aSFan Li i = 1; 270037a0ab2aSFan Li } 270137a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 270237a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 270322ad0b6aSJaegeuk Kim valid++; 270422ad0b6aSJaegeuk Kim } 270522ad0b6aSJaegeuk Kim if (valid == 0) { 270623380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 270723380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 270822ad0b6aSJaegeuk Kim return; 270922ad0b6aSJaegeuk Kim } 271022ad0b6aSJaegeuk Kim 271123380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 271222ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 271323380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 271422ad0b6aSJaegeuk Kim else 271523380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 271622ad0b6aSJaegeuk Kim } 271722ad0b6aSJaegeuk Kim 2718edc55aafSJaegeuk Kim static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, 271922ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2720309cc2b6SJaegeuk Kim { 2721309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2722b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2723309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2724309cc2b6SJaegeuk Kim bool to_journal = true; 2725309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2726309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2727309cc2b6SJaegeuk Kim struct page *page = NULL; 2728aec71382SChao Yu 2729aec71382SChao Yu /* 2730aec71382SChao Yu * there are two steps to flush nat entries: 2731aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2732aec71382SChao Yu * #2, flush nat entries to nat page. 2733aec71382SChao Yu */ 273422ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 273522ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2736aec71382SChao Yu to_journal = false; 2737aec71382SChao Yu 2738aec71382SChao Yu if (to_journal) { 2739b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2740aec71382SChao Yu } else { 2741e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2742edc55aafSJaegeuk Kim if (IS_ERR(page)) 2743edc55aafSJaegeuk Kim return PTR_ERR(page); 2744edc55aafSJaegeuk Kim 2745e05df3b1SJaegeuk Kim nat_blk = page_address(page); 27469850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2747e05df3b1SJaegeuk Kim } 2748e05df3b1SJaegeuk Kim 2749aec71382SChao Yu /* flush dirty nats in nat entry set */ 2750309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2751aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2752aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2753aec71382SChao Yu int offset; 2754aec71382SChao Yu 2755febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2756309cc2b6SJaegeuk Kim 2757aec71382SChao Yu if (to_journal) { 27584d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2759aec71382SChao Yu NAT_JOURNAL, nid, 1); 27609850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2761dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2762dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2763aec71382SChao Yu } else { 2764aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2765aec71382SChao Yu } 2766aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 276788bd02c9SJaegeuk Kim nat_reset_flag(ne); 27680b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 276904d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 27705921aaa1SLiFan add_free_nid(sbi, nid, false, true); 27714ac91242SChao Yu } else { 27724ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2773346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 277404d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 277504d47e67SChao Yu } 2776e05df3b1SJaegeuk Kim } 2777aec71382SChao Yu 277822ad0b6aSJaegeuk Kim if (to_journal) { 2779b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 278022ad0b6aSJaegeuk Kim } else { 278122ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2782e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 278322ad0b6aSJaegeuk Kim } 2784aec71382SChao Yu 278559c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 278659c9081bSYunlei He if (!set->entry_cnt) { 2787309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2788309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2789309cc2b6SJaegeuk Kim } 2790edc55aafSJaegeuk Kim return 0; 279159c9081bSYunlei He } 2792aec71382SChao Yu 2793309cc2b6SJaegeuk Kim /* 2794309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2795309cc2b6SJaegeuk Kim */ 2796edc55aafSJaegeuk Kim int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2797309cc2b6SJaegeuk Kim { 2798309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2799309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2800b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 28017aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2802309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2803309cc2b6SJaegeuk Kim unsigned int found; 2804309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2805309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2806edc55aafSJaegeuk Kim int err = 0; 2807309cc2b6SJaegeuk Kim 28087f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 28097f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 28107f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 28117f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 28127f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 28137f2ecdd8SJaegeuk Kim } 28147f2ecdd8SJaegeuk Kim 281520d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 2816edc55aafSJaegeuk Kim return 0; 2817a5131193SJaegeuk Kim 2818b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2819a5131193SJaegeuk Kim 2820309cc2b6SJaegeuk Kim /* 2821309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2822309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2823309cc2b6SJaegeuk Kim * into nat entry set. 2824309cc2b6SJaegeuk Kim */ 2825900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 282622ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2827309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2828309cc2b6SJaegeuk Kim 2829309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 28307aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2831309cc2b6SJaegeuk Kim unsigned idx; 2832309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2833309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2834309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2835dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2836309cc2b6SJaegeuk Kim } 2837309cc2b6SJaegeuk Kim 2838309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2839edc55aafSJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) { 2840edc55aafSJaegeuk Kim err = __flush_nat_entry_set(sbi, set, cpc); 2841edc55aafSJaegeuk Kim if (err) 2842edc55aafSJaegeuk Kim break; 2843edc55aafSJaegeuk Kim } 2844309cc2b6SJaegeuk Kim 2845b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 284659c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2847edc55aafSJaegeuk Kim 2848edc55aafSJaegeuk Kim return err; 2849e05df3b1SJaegeuk Kim } 2850e05df3b1SJaegeuk Kim 285122ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 285222ad0b6aSJaegeuk Kim { 285322ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 285422ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 285522ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 285622ad0b6aSJaegeuk Kim unsigned int i; 285722ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 285822ad0b6aSJaegeuk Kim block_t nat_bits_addr; 285922ad0b6aSJaegeuk Kim 286022ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 286122ad0b6aSJaegeuk Kim return 0; 286222ad0b6aSJaegeuk Kim 2863df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2864acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2865acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 286622ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 286722ad0b6aSJaegeuk Kim return -ENOMEM; 286822ad0b6aSJaegeuk Kim 286922ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 287022ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 287122ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 28727735730dSChao Yu struct page *page; 28737735730dSChao Yu 28747735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 28757735730dSChao Yu if (IS_ERR(page)) { 28767735730dSChao Yu disable_nat_bits(sbi, true); 28777735730dSChao Yu return PTR_ERR(page); 28787735730dSChao Yu } 287922ad0b6aSJaegeuk Kim 288022ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 288122ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 288222ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 288322ad0b6aSJaegeuk Kim } 288422ad0b6aSJaegeuk Kim 2885ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 288622ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 288722ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 288822ad0b6aSJaegeuk Kim return 0; 288922ad0b6aSJaegeuk Kim } 289022ad0b6aSJaegeuk Kim 289122ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 289222ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 289322ad0b6aSJaegeuk Kim 289422ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 289522ad0b6aSJaegeuk Kim return 0; 289622ad0b6aSJaegeuk Kim } 289722ad0b6aSJaegeuk Kim 2898bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 28997041d5d2SChao Yu { 29007041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 29017041d5d2SChao Yu unsigned int i = 0; 29027041d5d2SChao Yu nid_t nid, last_nid; 29037041d5d2SChao Yu 29047041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 29057041d5d2SChao Yu return; 29067041d5d2SChao Yu 29077041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29087041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 29097041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29107041d5d2SChao Yu break; 29117041d5d2SChao Yu 29127041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29137041d5d2SChao Yu 29147041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2915f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 29167041d5d2SChao Yu 2917346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 29187041d5d2SChao Yu for (; nid < last_nid; nid++) 2919346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2920346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 29217041d5d2SChao Yu } 29227041d5d2SChao Yu 29237041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 29247041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 29257041d5d2SChao Yu if (i >= nm_i->nat_blocks) 29267041d5d2SChao Yu break; 29277041d5d2SChao Yu 29287041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 29297041d5d2SChao Yu } 29307041d5d2SChao Yu } 29317041d5d2SChao Yu 2932e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2933e05df3b1SJaegeuk Kim { 2934e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2935e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2936e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 293722ad0b6aSJaegeuk Kim unsigned int nat_segs; 293822ad0b6aSJaegeuk Kim int err; 2939e05df3b1SJaegeuk Kim 2940e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2941e05df3b1SJaegeuk Kim 2942e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2943e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 294422ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 294522ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 29467ee0eeabSJaegeuk Kim 2947b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 294804d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2949292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 29509a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 29519a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2952e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2953cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2954ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 29552304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2956e05df3b1SJaegeuk Kim 29578a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 29589a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2959769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2960769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2961e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 296222969158SChao Yu spin_lock_init(&nm_i->nat_list_lock); 2963e05df3b1SJaegeuk Kim 2964e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2965b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2966b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2967e05df3b1SJaegeuk Kim 2968e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 296979b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2970e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2971e05df3b1SJaegeuk Kim if (!version_bitmap) 2972e05df3b1SJaegeuk Kim return -EFAULT; 2973e05df3b1SJaegeuk Kim 297479b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 297579b5793bSAlexandru Gheorghiu GFP_KERNEL); 297679b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 297779b5793bSAlexandru Gheorghiu return -ENOMEM; 2978599a09b2SChao Yu 297922ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 298022ad0b6aSJaegeuk Kim if (err) 298122ad0b6aSJaegeuk Kim return err; 298222ad0b6aSJaegeuk Kim 2983599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2984599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2985599a09b2SChao Yu GFP_KERNEL); 2986599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2987599a09b2SChao Yu return -ENOMEM; 2988599a09b2SChao Yu #endif 2989599a09b2SChao Yu 2990e05df3b1SJaegeuk Kim return 0; 2991e05df3b1SJaegeuk Kim } 2992e05df3b1SJaegeuk Kim 29939f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 29944ac91242SChao Yu { 29954ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2996bb1105e4SJaegeuk Kim int i; 29974ac91242SChao Yu 2998026f0507SKees Cook nm_i->free_nid_bitmap = 2999026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 3000026f0507SKees Cook nm_i->nat_blocks), 3001026f0507SKees Cook GFP_KERNEL); 30024ac91242SChao Yu if (!nm_i->free_nid_bitmap) 30034ac91242SChao Yu return -ENOMEM; 30044ac91242SChao Yu 3005bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 3006bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 3007e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 300868c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 3009bb1105e4SJaegeuk Kim return -ENOMEM; 3010bb1105e4SJaegeuk Kim } 3011bb1105e4SJaegeuk Kim 3012628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 30134ac91242SChao Yu GFP_KERNEL); 30144ac91242SChao Yu if (!nm_i->nat_block_bitmap) 30154ac91242SChao Yu return -ENOMEM; 3016586d1492SChao Yu 30179d2a789cSKees Cook nm_i->free_nid_count = 30189d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 30199d2a789cSKees Cook nm_i->nat_blocks), 30209d2a789cSKees Cook GFP_KERNEL); 3021586d1492SChao Yu if (!nm_i->free_nid_count) 3022586d1492SChao Yu return -ENOMEM; 30234ac91242SChao Yu return 0; 30244ac91242SChao Yu } 30254ac91242SChao Yu 30264d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 3027e05df3b1SJaegeuk Kim { 3028e05df3b1SJaegeuk Kim int err; 3029e05df3b1SJaegeuk Kim 3030acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 3031acbf054dSChao Yu GFP_KERNEL); 3032e05df3b1SJaegeuk Kim if (!sbi->nm_info) 3033e05df3b1SJaegeuk Kim return -ENOMEM; 3034e05df3b1SJaegeuk Kim 3035e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 3036e05df3b1SJaegeuk Kim if (err) 3037e05df3b1SJaegeuk Kim return err; 3038e05df3b1SJaegeuk Kim 30394ac91242SChao Yu err = init_free_nid_cache(sbi); 30404ac91242SChao Yu if (err) 30414ac91242SChao Yu return err; 30424ac91242SChao Yu 30437041d5d2SChao Yu /* load free nid status from nat_bits table */ 30447041d5d2SChao Yu load_free_nid_bitmap(sbi); 30457041d5d2SChao Yu 3046e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 3047e05df3b1SJaegeuk Kim } 3048e05df3b1SJaegeuk Kim 30494d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 3050e05df3b1SJaegeuk Kim { 3051e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3052e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 3053e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 30547aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3055e05df3b1SJaegeuk Kim nid_t nid = 0; 3056e05df3b1SJaegeuk Kim unsigned int found; 3057e05df3b1SJaegeuk Kim 3058e05df3b1SJaegeuk Kim if (!nm_i) 3059e05df3b1SJaegeuk Kim return; 3060e05df3b1SJaegeuk Kim 3061e05df3b1SJaegeuk Kim /* destroy free nid list */ 3062b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 30639a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3064a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3065b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3066cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3067b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3068e05df3b1SJaegeuk Kim } 30699a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 30709a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 30719a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3072b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3073e05df3b1SJaegeuk Kim 3074e05df3b1SJaegeuk Kim /* destroy nat cache */ 3075b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3076e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3077e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3078e05df3b1SJaegeuk Kim unsigned idx; 30797aed0d45SJaegeuk Kim 3080b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 308122969158SChao Yu for (idx = 0; idx < found; idx++) { 308222969158SChao Yu spin_lock(&nm_i->nat_list_lock); 308322969158SChao Yu list_del(&natvec[idx]->list); 308422969158SChao Yu spin_unlock(&nm_i->nat_list_lock); 308522969158SChao Yu 3086b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3087e05df3b1SJaegeuk Kim } 308822969158SChao Yu } 30899850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 30907aed0d45SJaegeuk Kim 30917aed0d45SJaegeuk Kim /* destroy nat set cache */ 30927aed0d45SJaegeuk Kim nid = 0; 30937aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 30947aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 30957aed0d45SJaegeuk Kim unsigned idx; 30967aed0d45SJaegeuk Kim 30977aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 30987aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 30997aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 31007aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 31017aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 31027aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 31037aed0d45SJaegeuk Kim } 31047aed0d45SJaegeuk Kim } 3105b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3106e05df3b1SJaegeuk Kim 31074ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3108bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3109bb1105e4SJaegeuk Kim int i; 3110bb1105e4SJaegeuk Kim 3111bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3112bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 3113bb1105e4SJaegeuk Kim kfree(nm_i->free_nid_bitmap); 3114bb1105e4SJaegeuk Kim } 3115586d1492SChao Yu kvfree(nm_i->free_nid_count); 31164ac91242SChao Yu 3117e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 311822ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 3119599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3120599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 3121599a09b2SChao Yu #endif 3122e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3123e05df3b1SJaegeuk Kim kfree(nm_i); 3124e05df3b1SJaegeuk Kim } 3125e05df3b1SJaegeuk Kim 31264d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3127e05df3b1SJaegeuk Kim { 3128e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 3129e8512d2eSGu Zheng sizeof(struct nat_entry)); 3130e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3131aec71382SChao Yu goto fail; 3132e05df3b1SJaegeuk Kim 3133e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 3134e8512d2eSGu Zheng sizeof(struct free_nid)); 3135aec71382SChao Yu if (!free_nid_slab) 3136ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3137aec71382SChao Yu 3138aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 3139aec71382SChao Yu sizeof(struct nat_entry_set)); 3140aec71382SChao Yu if (!nat_entry_set_slab) 3141ce3e6d25SMarkus Elfring goto destroy_free_nid; 314250fa53ecSChao Yu 314350fa53ecSChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("fsync_node_entry", 314450fa53ecSChao Yu sizeof(struct fsync_node_entry)); 314550fa53ecSChao Yu if (!fsync_node_entry_slab) 314650fa53ecSChao Yu goto destroy_nat_entry_set; 3147e05df3b1SJaegeuk Kim return 0; 3148aec71382SChao Yu 314950fa53ecSChao Yu destroy_nat_entry_set: 315050fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3151ce3e6d25SMarkus Elfring destroy_free_nid: 3152aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3153ce3e6d25SMarkus Elfring destroy_nat_entry: 3154aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3155aec71382SChao Yu fail: 3156aec71382SChao Yu return -ENOMEM; 3157e05df3b1SJaegeuk Kim } 3158e05df3b1SJaegeuk Kim 31594d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3160e05df3b1SJaegeuk Kim { 316150fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3162aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3163e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3164e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3165e05df3b1SJaegeuk Kim } 3166