10a8165d7SJaegeuk Kim /* 2e05df3b1SJaegeuk Kim * fs/f2fs/node.c 3e05df3b1SJaegeuk Kim * 4e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5e05df3b1SJaegeuk Kim * http://www.samsung.com/ 6e05df3b1SJaegeuk Kim * 7e05df3b1SJaegeuk Kim * This program is free software; you can redistribute it and/or modify 8e05df3b1SJaegeuk Kim * it under the terms of the GNU General Public License version 2 as 9e05df3b1SJaegeuk Kim * published by the Free Software Foundation. 10e05df3b1SJaegeuk Kim */ 11e05df3b1SJaegeuk Kim #include <linux/fs.h> 12e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 13e05df3b1SJaegeuk Kim #include <linux/mpage.h> 14e05df3b1SJaegeuk Kim #include <linux/backing-dev.h> 15e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 16e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 17e05df3b1SJaegeuk Kim #include <linux/swap.h> 18e05df3b1SJaegeuk Kim 19e05df3b1SJaegeuk Kim #include "f2fs.h" 20e05df3b1SJaegeuk Kim #include "node.h" 21e05df3b1SJaegeuk Kim #include "segment.h" 2287905682SYunlei He #include "xattr.h" 239e4ded3fSJaegeuk Kim #include "trace.h" 2451dd6249SNamjae Jeon #include <trace/events/f2fs.h> 25e05df3b1SJaegeuk Kim 264d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 27f978f5a0SGu Zheng 28e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 29e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 30aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 3150fa53ecSChao Yu static struct kmem_cache *fsync_node_entry_slab; 32e05df3b1SJaegeuk Kim 33a4f843bdSJaegeuk Kim /* 34a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 35a4f843bdSJaegeuk Kim */ 364d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 37a4f843bdSJaegeuk Kim { 38a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 39a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 40a4f843bdSJaegeuk Kim f2fs_msg(sbi->sb, KERN_WARNING, 41a4f843bdSJaegeuk Kim "%s: out-of-range nid=%x, run fsck to fix.", 42a4f843bdSJaegeuk Kim __func__, nid); 43a4f843bdSJaegeuk Kim return -EINVAL; 44a4f843bdSJaegeuk Kim } 45a4f843bdSJaegeuk Kim return 0; 46a4f843bdSJaegeuk Kim } 47a4f843bdSJaegeuk Kim 484d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 49cdfc41c1SJaegeuk Kim { 506fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 51cdfc41c1SJaegeuk Kim struct sysinfo val; 52e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 53cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 546fb03f3aSJaegeuk Kim bool res = false; 55cdfc41c1SJaegeuk Kim 56cdfc41c1SJaegeuk Kim si_meminfo(&val); 57e5e7ea3cSJaegeuk Kim 58e5e7ea3cSJaegeuk Kim /* only uses low memory */ 59e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 60e5e7ea3cSJaegeuk Kim 61429511cdSChao Yu /* 62429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 63429511cdSChao Yu */ 646fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 659a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 66b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 67e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 686fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 69e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 7009cbfeafSKirill A. Shutemov PAGE_SHIFT; 71e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 72e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 73e589c2c4SJaegeuk Kim res = false; 74a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 75a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 76a1257023SJaegeuk Kim return false; 77a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 78a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 79e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 80e5e7ea3cSJaegeuk Kim int i; 81e5e7ea3cSJaegeuk Kim 8239d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 838f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 848f73cbb7SKinglong Mee sizeof(struct ino_entry); 858f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 86e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 87429511cdSChao Yu } else if (type == EXTENT_CACHE) { 887441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 897441ccefSJaegeuk Kim sizeof(struct extent_tree) + 90429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 9109cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 92429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 9357864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 9457864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 9557864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 9657864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 971e84371fSJaegeuk Kim } else { 981663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 991663cae4SJaegeuk Kim return true; 1006fb03f3aSJaegeuk Kim } 1016fb03f3aSJaegeuk Kim return res; 102cdfc41c1SJaegeuk Kim } 103cdfc41c1SJaegeuk Kim 104e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 105e05df3b1SJaegeuk Kim { 106e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1074d57b86dSChao Yu f2fs_clear_radix_tree_dirty_tag(page); 108e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 109aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 110e05df3b1SJaegeuk Kim } 111e05df3b1SJaegeuk Kim ClearPageUptodate(page); 112e05df3b1SJaegeuk Kim } 113e05df3b1SJaegeuk Kim 114e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 115e05df3b1SJaegeuk Kim { 11680551d17SChao Yu return f2fs_get_meta_page_nofail(sbi, current_nat_addr(sbi, nid)); 117e05df3b1SJaegeuk Kim } 118e05df3b1SJaegeuk Kim 119e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 120e05df3b1SJaegeuk Kim { 121e05df3b1SJaegeuk Kim struct page *src_page; 122e05df3b1SJaegeuk Kim struct page *dst_page; 123e05df3b1SJaegeuk Kim pgoff_t dst_off; 124e05df3b1SJaegeuk Kim void *src_addr; 125e05df3b1SJaegeuk Kim void *dst_addr; 126e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 127e05df3b1SJaegeuk Kim 12880551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 13180551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 1324d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1339850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 134e05df3b1SJaegeuk Kim 135e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 136e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13709cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 138e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 139e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 140e05df3b1SJaegeuk Kim 141e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 142e05df3b1SJaegeuk Kim 143e05df3b1SJaegeuk Kim return dst_page; 144e05df3b1SJaegeuk Kim } 145e05df3b1SJaegeuk Kim 14612f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 14712f9ef37SYunlei He { 14812f9ef37SYunlei He struct nat_entry *new; 14912f9ef37SYunlei He 15012f9ef37SYunlei He if (no_fail) 1512882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15212f9ef37SYunlei He else 1532882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15412f9ef37SYunlei He if (new) { 15512f9ef37SYunlei He nat_set_nid(new, nid); 15612f9ef37SYunlei He nat_reset_flag(new); 15712f9ef37SYunlei He } 15812f9ef37SYunlei He return new; 15912f9ef37SYunlei He } 16012f9ef37SYunlei He 16112f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 16212f9ef37SYunlei He { 16312f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 16412f9ef37SYunlei He } 16512f9ef37SYunlei He 16612f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16712f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 16812f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 16912f9ef37SYunlei He { 17012f9ef37SYunlei He if (no_fail) 17112f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 17212f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 17312f9ef37SYunlei He return NULL; 17412f9ef37SYunlei He 17512f9ef37SYunlei He if (raw_ne) 17612f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17712f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 17812f9ef37SYunlei He nm_i->nat_cnt++; 17912f9ef37SYunlei He return ne; 18012f9ef37SYunlei He } 18112f9ef37SYunlei He 182e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 183e05df3b1SJaegeuk Kim { 184e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 185e05df3b1SJaegeuk Kim } 186e05df3b1SJaegeuk Kim 187e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 188e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 189e05df3b1SJaegeuk Kim { 190e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 191e05df3b1SJaegeuk Kim } 192e05df3b1SJaegeuk Kim 193e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 194e05df3b1SJaegeuk Kim { 195e05df3b1SJaegeuk Kim list_del(&e->list); 196e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 197e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 19812f9ef37SYunlei He __free_nat_entry(e); 199e05df3b1SJaegeuk Kim } 200e05df3b1SJaegeuk Kim 201780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 202309cc2b6SJaegeuk Kim struct nat_entry *ne) 203309cc2b6SJaegeuk Kim { 204309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 205309cc2b6SJaegeuk Kim struct nat_entry_set *head; 206309cc2b6SJaegeuk Kim 207309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 208309cc2b6SJaegeuk Kim if (!head) { 20980c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 210309cc2b6SJaegeuk Kim 211309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 212309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 213309cc2b6SJaegeuk Kim head->set = set; 214309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2159be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 216309cc2b6SJaegeuk Kim } 217780de47cSChao Yu return head; 218780de47cSChao Yu } 219780de47cSChao Yu 220780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 221780de47cSChao Yu struct nat_entry *ne) 222780de47cSChao Yu { 223780de47cSChao Yu struct nat_entry_set *head; 224780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 225780de47cSChao Yu 226780de47cSChao Yu if (!new_ne) 227780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 228780de47cSChao Yu 229780de47cSChao Yu /* 230780de47cSChao Yu * update entry_cnt in below condition: 231780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 232780de47cSChao Yu * 2. update old block address to new one; 233780de47cSChao Yu */ 234780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 235780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 236780de47cSChao Yu head->entry_cnt++; 237780de47cSChao Yu 238780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 239febeca6dSChao Yu 240febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 241febeca6dSChao Yu goto refresh_list; 242febeca6dSChao Yu 243309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 244309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 245febeca6dSChao Yu refresh_list: 246780de47cSChao Yu if (new_ne) 247febeca6dSChao Yu list_del_init(&ne->list); 248febeca6dSChao Yu else 249febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 250309cc2b6SJaegeuk Kim } 251309cc2b6SJaegeuk Kim 252309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2530b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 254309cc2b6SJaegeuk Kim { 255309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 256309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2570b28b71eSKinglong Mee set->entry_cnt--; 258309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 259309cc2b6SJaegeuk Kim } 260309cc2b6SJaegeuk Kim 261309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 262309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 263309cc2b6SJaegeuk Kim { 264309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 265309cc2b6SJaegeuk Kim start, nr); 266309cc2b6SJaegeuk Kim } 267309cc2b6SJaegeuk Kim 26850fa53ecSChao Yu bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) 26950fa53ecSChao Yu { 27050fa53ecSChao Yu return NODE_MAPPING(sbi) == page->mapping && 27150fa53ecSChao Yu IS_DNODE(page) && is_cold_node(page); 27250fa53ecSChao Yu } 27350fa53ecSChao Yu 27450fa53ecSChao Yu void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) 27550fa53ecSChao Yu { 27650fa53ecSChao Yu spin_lock_init(&sbi->fsync_node_lock); 27750fa53ecSChao Yu INIT_LIST_HEAD(&sbi->fsync_node_list); 27850fa53ecSChao Yu sbi->fsync_seg_id = 0; 27950fa53ecSChao Yu sbi->fsync_node_num = 0; 28050fa53ecSChao Yu } 28150fa53ecSChao Yu 28250fa53ecSChao Yu static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, 28350fa53ecSChao Yu struct page *page) 28450fa53ecSChao Yu { 28550fa53ecSChao Yu struct fsync_node_entry *fn; 28650fa53ecSChao Yu unsigned long flags; 28750fa53ecSChao Yu unsigned int seq_id; 28850fa53ecSChao Yu 28950fa53ecSChao Yu fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, GFP_NOFS); 29050fa53ecSChao Yu 29150fa53ecSChao Yu get_page(page); 29250fa53ecSChao Yu fn->page = page; 29350fa53ecSChao Yu INIT_LIST_HEAD(&fn->list); 29450fa53ecSChao Yu 29550fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 29650fa53ecSChao Yu list_add_tail(&fn->list, &sbi->fsync_node_list); 29750fa53ecSChao Yu fn->seq_id = sbi->fsync_seg_id++; 29850fa53ecSChao Yu seq_id = fn->seq_id; 29950fa53ecSChao Yu sbi->fsync_node_num++; 30050fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 30150fa53ecSChao Yu 30250fa53ecSChao Yu return seq_id; 30350fa53ecSChao Yu } 30450fa53ecSChao Yu 30550fa53ecSChao Yu void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) 30650fa53ecSChao Yu { 30750fa53ecSChao Yu struct fsync_node_entry *fn; 30850fa53ecSChao Yu unsigned long flags; 30950fa53ecSChao Yu 31050fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 31150fa53ecSChao Yu list_for_each_entry(fn, &sbi->fsync_node_list, list) { 31250fa53ecSChao Yu if (fn->page == page) { 31350fa53ecSChao Yu list_del(&fn->list); 31450fa53ecSChao Yu sbi->fsync_node_num--; 31550fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 31650fa53ecSChao Yu kmem_cache_free(fsync_node_entry_slab, fn); 31750fa53ecSChao Yu put_page(page); 31850fa53ecSChao Yu return; 31950fa53ecSChao Yu } 32050fa53ecSChao Yu } 32150fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 32250fa53ecSChao Yu f2fs_bug_on(sbi, 1); 32350fa53ecSChao Yu } 32450fa53ecSChao Yu 32550fa53ecSChao Yu void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) 32650fa53ecSChao Yu { 32750fa53ecSChao Yu unsigned long flags; 32850fa53ecSChao Yu 32950fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 33050fa53ecSChao Yu sbi->fsync_seg_id = 0; 33150fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 33250fa53ecSChao Yu } 33350fa53ecSChao Yu 3344d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 3352dcf51abSJaegeuk Kim { 3362dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3372dcf51abSJaegeuk Kim struct nat_entry *e; 3382dcf51abSJaegeuk Kim bool need = false; 3392dcf51abSJaegeuk Kim 340b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 3412dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3422dcf51abSJaegeuk Kim if (e) { 3432dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 3442dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 3452dcf51abSJaegeuk Kim need = true; 3462dcf51abSJaegeuk Kim } 347b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 3482dcf51abSJaegeuk Kim return need; 3492dcf51abSJaegeuk Kim } 3502dcf51abSJaegeuk Kim 3514d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 352e05df3b1SJaegeuk Kim { 353e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 354e05df3b1SJaegeuk Kim struct nat_entry *e; 35588bd02c9SJaegeuk Kim bool is_cp = true; 356e05df3b1SJaegeuk Kim 357b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 358e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 3597ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 36088bd02c9SJaegeuk Kim is_cp = false; 361b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 362e05df3b1SJaegeuk Kim return is_cp; 363e05df3b1SJaegeuk Kim } 364e05df3b1SJaegeuk Kim 3654d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 366b6fe5873SJaegeuk Kim { 367b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 368b6fe5873SJaegeuk Kim struct nat_entry *e; 36988bd02c9SJaegeuk Kim bool need_update = true; 370b6fe5873SJaegeuk Kim 371b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 37288bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 37388bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 37488bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 37588bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 37688bd02c9SJaegeuk Kim need_update = false; 377b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 37888bd02c9SJaegeuk Kim return need_update; 379b6fe5873SJaegeuk Kim } 380b6fe5873SJaegeuk Kim 38112f9ef37SYunlei He /* must be locked by nat_tree_lock */ 3821515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 383e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 384e05df3b1SJaegeuk Kim { 3851515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 38612f9ef37SYunlei He struct nat_entry *new, *e; 3879be32d72SJaegeuk Kim 38812f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 38912f9ef37SYunlei He if (!new) 39012f9ef37SYunlei He return; 39112f9ef37SYunlei He 39212f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 393e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 39412f9ef37SYunlei He if (!e) 39512f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 39612f9ef37SYunlei He else 3970c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 3980c0b471eSEric Biggers nat_get_blkaddr(e) != 3990c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 4001515aef0SChao Yu nat_get_version(e) != ne->version); 40112f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 40212f9ef37SYunlei He if (e != new) 40312f9ef37SYunlei He __free_nat_entry(new); 404e05df3b1SJaegeuk Kim } 405e05df3b1SJaegeuk Kim 406e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 407479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 408e05df3b1SJaegeuk Kim { 409e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 410e05df3b1SJaegeuk Kim struct nat_entry *e; 41112f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 4129be32d72SJaegeuk Kim 413b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 414e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 415e05df3b1SJaegeuk Kim if (!e) { 41612f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 4175c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4189850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 419e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 420e05df3b1SJaegeuk Kim /* 421e05df3b1SJaegeuk Kim * when nid is reallocated, 422e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 423e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 424e05df3b1SJaegeuk Kim */ 4255c27f4eeSChao Yu copy_node_info(&e->ni, ni); 4269850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 427e05df3b1SJaegeuk Kim } 42812f9ef37SYunlei He /* let's free early to reduce memory consumption */ 42912f9ef37SYunlei He if (e != new) 43012f9ef37SYunlei He __free_nat_entry(new); 431e05df3b1SJaegeuk Kim 432e05df3b1SJaegeuk Kim /* sanity check */ 4339850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 4349850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 435e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 4369850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 437e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 438e1da7872SChao Yu f2fs_bug_on(sbi, is_valid_data_blkaddr(sbi, nat_get_blkaddr(e)) && 439e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 440e05df3b1SJaegeuk Kim 441e1c42045Sarter97 /* increment version no as node is removed */ 442e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 443e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 444e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 445e05df3b1SJaegeuk Kim } 446e05df3b1SJaegeuk Kim 447e05df3b1SJaegeuk Kim /* change address */ 448e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 449e1da7872SChao Yu if (!is_valid_data_blkaddr(sbi, new_blkaddr)) 45088bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 451e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 452479f40c4SJaegeuk Kim 453479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 454d5b692b7SChao Yu if (ni->nid != ni->ino) 455479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 45688bd02c9SJaegeuk Kim if (e) { 45788bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 45888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 45988bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 46088bd02c9SJaegeuk Kim } 461b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 462e05df3b1SJaegeuk Kim } 463e05df3b1SJaegeuk Kim 4644d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 465e05df3b1SJaegeuk Kim { 466e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 4671b38dc8eSJaegeuk Kim int nr = nr_shrink; 468e05df3b1SJaegeuk Kim 469b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 470b873b798SJaegeuk Kim return 0; 471e05df3b1SJaegeuk Kim 472e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 473e05df3b1SJaegeuk Kim struct nat_entry *ne; 474e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 475e05df3b1SJaegeuk Kim struct nat_entry, list); 476e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 477e05df3b1SJaegeuk Kim nr_shrink--; 478e05df3b1SJaegeuk Kim } 479b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 4801b38dc8eSJaegeuk Kim return nr - nr_shrink; 481e05df3b1SJaegeuk Kim } 482e05df3b1SJaegeuk Kim 4830a8165d7SJaegeuk Kim /* 484e1c42045Sarter97 * This function always returns success 485e05df3b1SJaegeuk Kim */ 4867735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 4874d57b86dSChao Yu struct node_info *ni) 488e05df3b1SJaegeuk Kim { 489e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 490e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 491b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 492e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 493e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 494e05df3b1SJaegeuk Kim struct page *page = NULL; 495e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 496e05df3b1SJaegeuk Kim struct nat_entry *e; 49766a82d1fSYunlei He pgoff_t index; 498e05df3b1SJaegeuk Kim int i; 499e05df3b1SJaegeuk Kim 500e05df3b1SJaegeuk Kim ni->nid = nid; 501e05df3b1SJaegeuk Kim 502e05df3b1SJaegeuk Kim /* Check nat cache */ 503b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 504e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 505e05df3b1SJaegeuk Kim if (e) { 506e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 507e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 508e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 509b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 5107735730dSChao Yu return 0; 5111515aef0SChao Yu } 512e05df3b1SJaegeuk Kim 5133547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 5143547ea96SJaegeuk Kim 515e05df3b1SJaegeuk Kim /* Check current segment summary */ 516b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 5174d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 518e05df3b1SJaegeuk Kim if (i >= 0) { 519dfc08a12SChao Yu ne = nat_in_journal(journal, i); 520e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 521e05df3b1SJaegeuk Kim } 522b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 52366a82d1fSYunlei He if (i >= 0) { 52466a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 525e05df3b1SJaegeuk Kim goto cache; 52666a82d1fSYunlei He } 527e05df3b1SJaegeuk Kim 528e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 52966a82d1fSYunlei He index = current_nat_addr(sbi, nid); 53066a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 53166a82d1fSYunlei He 5324d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 5337735730dSChao Yu if (IS_ERR(page)) 5347735730dSChao Yu return PTR_ERR(page); 5357735730dSChao Yu 536e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 537e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 538e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 539e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 540e05df3b1SJaegeuk Kim cache: 541e05df3b1SJaegeuk Kim /* cache nat entry */ 5421515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 5437735730dSChao Yu return 0; 544e05df3b1SJaegeuk Kim } 545e05df3b1SJaegeuk Kim 54679344efbSJaegeuk Kim /* 54779344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 54879344efbSJaegeuk Kim */ 5494d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 55079344efbSJaegeuk Kim { 55179344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 55279344efbSJaegeuk Kim struct blk_plug plug; 55379344efbSJaegeuk Kim int i, end; 55479344efbSJaegeuk Kim nid_t nid; 55579344efbSJaegeuk Kim 55679344efbSJaegeuk Kim blk_start_plug(&plug); 55779344efbSJaegeuk Kim 55879344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 55979344efbSJaegeuk Kim end = start + n; 56079344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 56179344efbSJaegeuk Kim for (i = start; i < end; i++) { 56279344efbSJaegeuk Kim nid = get_nid(parent, i, false); 5634d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 56479344efbSJaegeuk Kim } 56579344efbSJaegeuk Kim 56679344efbSJaegeuk Kim blk_finish_plug(&plug); 56779344efbSJaegeuk Kim } 56879344efbSJaegeuk Kim 5694d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 5703cf45747SChao Yu { 5713cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 5723cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 5733cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 5743cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 5753cf45747SChao Yu int cur_level = dn->cur_level; 5763cf45747SChao Yu int max_level = dn->max_level; 5773cf45747SChao Yu pgoff_t base = 0; 5783cf45747SChao Yu 5793cf45747SChao Yu if (!dn->max_level) 5803cf45747SChao Yu return pgofs + 1; 5813cf45747SChao Yu 5823cf45747SChao Yu while (max_level-- > cur_level) 5833cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 5843cf45747SChao Yu 5853cf45747SChao Yu switch (dn->max_level) { 5863cf45747SChao Yu case 3: 5873cf45747SChao Yu base += 2 * indirect_blks; 5883cf45747SChao Yu case 2: 5893cf45747SChao Yu base += 2 * direct_blks; 5903cf45747SChao Yu case 1: 5913cf45747SChao Yu base += direct_index; 5923cf45747SChao Yu break; 5933cf45747SChao Yu default: 5943cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 5953cf45747SChao Yu } 5963cf45747SChao Yu 5973cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 5983cf45747SChao Yu } 5993cf45747SChao Yu 6000a8165d7SJaegeuk Kim /* 601e05df3b1SJaegeuk Kim * The maximum depth is four. 602e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 603e05df3b1SJaegeuk Kim */ 60481ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 605de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 606e05df3b1SJaegeuk Kim { 60781ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 608e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 609e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 610e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 611e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 612e05df3b1SJaegeuk Kim int n = 0; 613e05df3b1SJaegeuk Kim int level = 0; 614e05df3b1SJaegeuk Kim 615e05df3b1SJaegeuk Kim noffset[0] = 0; 616e05df3b1SJaegeuk Kim 617e05df3b1SJaegeuk Kim if (block < direct_index) { 61825c0a6e5SNamjae Jeon offset[n] = block; 619e05df3b1SJaegeuk Kim goto got; 620e05df3b1SJaegeuk Kim } 621e05df3b1SJaegeuk Kim block -= direct_index; 622e05df3b1SJaegeuk Kim if (block < direct_blks) { 623e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 624e05df3b1SJaegeuk Kim noffset[n] = 1; 62525c0a6e5SNamjae Jeon offset[n] = block; 626e05df3b1SJaegeuk Kim level = 1; 627e05df3b1SJaegeuk Kim goto got; 628e05df3b1SJaegeuk Kim } 629e05df3b1SJaegeuk Kim block -= direct_blks; 630e05df3b1SJaegeuk Kim if (block < direct_blks) { 631e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 632e05df3b1SJaegeuk Kim noffset[n] = 2; 63325c0a6e5SNamjae Jeon offset[n] = block; 634e05df3b1SJaegeuk Kim level = 1; 635e05df3b1SJaegeuk Kim goto got; 636e05df3b1SJaegeuk Kim } 637e05df3b1SJaegeuk Kim block -= direct_blks; 638e05df3b1SJaegeuk Kim if (block < indirect_blks) { 639e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 640e05df3b1SJaegeuk Kim noffset[n] = 3; 641e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 642e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 64325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 644e05df3b1SJaegeuk Kim level = 2; 645e05df3b1SJaegeuk Kim goto got; 646e05df3b1SJaegeuk Kim } 647e05df3b1SJaegeuk Kim block -= indirect_blks; 648e05df3b1SJaegeuk Kim if (block < indirect_blks) { 649e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 650e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 651e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 652e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 65325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 654e05df3b1SJaegeuk Kim level = 2; 655e05df3b1SJaegeuk Kim goto got; 656e05df3b1SJaegeuk Kim } 657e05df3b1SJaegeuk Kim block -= indirect_blks; 658e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 659e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 660e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 661e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 662e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 663e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 664e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 665e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 666e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 667e05df3b1SJaegeuk Kim offset[n - 1]; 66825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 669e05df3b1SJaegeuk Kim level = 3; 670e05df3b1SJaegeuk Kim goto got; 671e05df3b1SJaegeuk Kim } else { 672adb6dc19SJaegeuk Kim return -E2BIG; 673e05df3b1SJaegeuk Kim } 674e05df3b1SJaegeuk Kim got: 675e05df3b1SJaegeuk Kim return level; 676e05df3b1SJaegeuk Kim } 677e05df3b1SJaegeuk Kim 678e05df3b1SJaegeuk Kim /* 679e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 6804f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 6814f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 68239936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 683e05df3b1SJaegeuk Kim */ 6844d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 685e05df3b1SJaegeuk Kim { 6864081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 687e05df3b1SJaegeuk Kim struct page *npage[4]; 688f1a3b98eSJaegeuk Kim struct page *parent = NULL; 689e05df3b1SJaegeuk Kim int offset[4]; 690e05df3b1SJaegeuk Kim unsigned int noffset[4]; 691e05df3b1SJaegeuk Kim nid_t nids[4]; 6923cf45747SChao Yu int level, i = 0; 693e05df3b1SJaegeuk Kim int err = 0; 694e05df3b1SJaegeuk Kim 69581ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 696adb6dc19SJaegeuk Kim if (level < 0) 697adb6dc19SJaegeuk Kim return level; 698e05df3b1SJaegeuk Kim 699e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 7001646cfacSJaegeuk Kim npage[0] = dn->inode_page; 7011646cfacSJaegeuk Kim 7021646cfacSJaegeuk Kim if (!npage[0]) { 7034d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 704e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 705e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 7061646cfacSJaegeuk Kim } 707f1a3b98eSJaegeuk Kim 708f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 709f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 71076629165SJaegeuk Kim err = -ENOENT; 711f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 712f1a3b98eSJaegeuk Kim goto release_out; 713f1a3b98eSJaegeuk Kim } 714f1a3b98eSJaegeuk Kim 715e05df3b1SJaegeuk Kim parent = npage[0]; 71652c2db3fSChangman Lee if (level != 0) 717e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 718e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 719e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 720e05df3b1SJaegeuk Kim 721e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 722e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 723e05df3b1SJaegeuk Kim bool done = false; 724e05df3b1SJaegeuk Kim 725266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 726e05df3b1SJaegeuk Kim /* alloc new node */ 7274d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 728e05df3b1SJaegeuk Kim err = -ENOSPC; 729e05df3b1SJaegeuk Kim goto release_pages; 730e05df3b1SJaegeuk Kim } 731e05df3b1SJaegeuk Kim 732e05df3b1SJaegeuk Kim dn->nid = nids[i]; 7334d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 734e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 7354d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 736e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 737e05df3b1SJaegeuk Kim goto release_pages; 738e05df3b1SJaegeuk Kim } 739e05df3b1SJaegeuk Kim 740e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 7414d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 742e05df3b1SJaegeuk Kim done = true; 743266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 7444d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 745e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 746e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 747e05df3b1SJaegeuk Kim goto release_pages; 748e05df3b1SJaegeuk Kim } 749e05df3b1SJaegeuk Kim done = true; 750e05df3b1SJaegeuk Kim } 751e05df3b1SJaegeuk Kim if (i == 1) { 752e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 753e05df3b1SJaegeuk Kim unlock_page(parent); 754e05df3b1SJaegeuk Kim } else { 755e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 756e05df3b1SJaegeuk Kim } 757e05df3b1SJaegeuk Kim 758e05df3b1SJaegeuk Kim if (!done) { 7594d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 760e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 761e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 762e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 763e05df3b1SJaegeuk Kim goto release_out; 764e05df3b1SJaegeuk Kim } 765e05df3b1SJaegeuk Kim } 766e05df3b1SJaegeuk Kim if (i < level) { 767e05df3b1SJaegeuk Kim parent = npage[i]; 768e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 769e05df3b1SJaegeuk Kim } 770e05df3b1SJaegeuk Kim } 771e05df3b1SJaegeuk Kim dn->nid = nids[level]; 772e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 773e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 7747a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 7757a2af766SChao Yu dn->node_page, dn->ofs_in_node); 776e05df3b1SJaegeuk Kim return 0; 777e05df3b1SJaegeuk Kim 778e05df3b1SJaegeuk Kim release_pages: 779e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 780e05df3b1SJaegeuk Kim if (i > 1) 781e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 782e05df3b1SJaegeuk Kim release_out: 783e05df3b1SJaegeuk Kim dn->inode_page = NULL; 784e05df3b1SJaegeuk Kim dn->node_page = NULL; 7853cf45747SChao Yu if (err == -ENOENT) { 7863cf45747SChao Yu dn->cur_level = i; 7873cf45747SChao Yu dn->max_level = level; 7880a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 7893cf45747SChao Yu } 790e05df3b1SJaegeuk Kim return err; 791e05df3b1SJaegeuk Kim } 792e05df3b1SJaegeuk Kim 7937735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 794e05df3b1SJaegeuk Kim { 7954081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 796e05df3b1SJaegeuk Kim struct node_info ni; 7977735730dSChao Yu int err; 798e05df3b1SJaegeuk Kim 7997735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 8007735730dSChao Yu if (err) 8017735730dSChao Yu return err; 802e05df3b1SJaegeuk Kim 803e05df3b1SJaegeuk Kim /* Deallocate node address */ 8044d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 805000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 806479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 807e05df3b1SJaegeuk Kim 808e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 8094d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 810e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 8110f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 812e05df3b1SJaegeuk Kim } 813000519f2SChao Yu 814e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 815caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 816e05df3b1SJaegeuk Kim 817e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 818bf39c00aSJaegeuk Kim 819bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 820bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 821bf39c00aSJaegeuk Kim 822e05df3b1SJaegeuk Kim dn->node_page = NULL; 82351dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 8247735730dSChao Yu 8257735730dSChao Yu return 0; 826e05df3b1SJaegeuk Kim } 827e05df3b1SJaegeuk Kim 828e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 829e05df3b1SJaegeuk Kim { 830e05df3b1SJaegeuk Kim struct page *page; 8317735730dSChao Yu int err; 832e05df3b1SJaegeuk Kim 833e05df3b1SJaegeuk Kim if (dn->nid == 0) 834e05df3b1SJaegeuk Kim return 1; 835e05df3b1SJaegeuk Kim 836e05df3b1SJaegeuk Kim /* get direct node */ 8374d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 838e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 839e05df3b1SJaegeuk Kim return 1; 840e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 841e05df3b1SJaegeuk Kim return PTR_ERR(page); 842e05df3b1SJaegeuk Kim 843e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 844e05df3b1SJaegeuk Kim dn->node_page = page; 845e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 8464d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 8477735730dSChao Yu err = truncate_node(dn); 8487735730dSChao Yu if (err) 8497735730dSChao Yu return err; 8507735730dSChao Yu 851e05df3b1SJaegeuk Kim return 1; 852e05df3b1SJaegeuk Kim } 853e05df3b1SJaegeuk Kim 854e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 855e05df3b1SJaegeuk Kim int ofs, int depth) 856e05df3b1SJaegeuk Kim { 857e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 858e05df3b1SJaegeuk Kim struct page *page; 859e05df3b1SJaegeuk Kim struct f2fs_node *rn; 860e05df3b1SJaegeuk Kim nid_t child_nid; 861e05df3b1SJaegeuk Kim unsigned int child_nofs; 862e05df3b1SJaegeuk Kim int freed = 0; 863e05df3b1SJaegeuk Kim int i, ret; 864e05df3b1SJaegeuk Kim 865e05df3b1SJaegeuk Kim if (dn->nid == 0) 866e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 867e05df3b1SJaegeuk Kim 86851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 86951dd6249SNamjae Jeon 8704d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 87151dd6249SNamjae Jeon if (IS_ERR(page)) { 87251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 873e05df3b1SJaegeuk Kim return PTR_ERR(page); 87451dd6249SNamjae Jeon } 875e05df3b1SJaegeuk Kim 8764d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 87779344efbSJaegeuk Kim 87845590710SGu Zheng rn = F2FS_NODE(page); 879e05df3b1SJaegeuk Kim if (depth < 3) { 880e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 881e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 882e05df3b1SJaegeuk Kim if (child_nid == 0) 883e05df3b1SJaegeuk Kim continue; 884e05df3b1SJaegeuk Kim rdn.nid = child_nid; 885e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 886e05df3b1SJaegeuk Kim if (ret < 0) 887e05df3b1SJaegeuk Kim goto out_err; 88812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 88993bae099SJaegeuk Kim dn->node_changed = true; 890e05df3b1SJaegeuk Kim } 891e05df3b1SJaegeuk Kim } else { 892e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 893e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 894e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 895e05df3b1SJaegeuk Kim if (child_nid == 0) { 896e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 897e05df3b1SJaegeuk Kim continue; 898e05df3b1SJaegeuk Kim } 899e05df3b1SJaegeuk Kim rdn.nid = child_nid; 900e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 901e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 90212719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 90393bae099SJaegeuk Kim dn->node_changed = true; 904e05df3b1SJaegeuk Kim child_nofs += ret; 905e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 906e05df3b1SJaegeuk Kim goto out_err; 907e05df3b1SJaegeuk Kim } 908e05df3b1SJaegeuk Kim } 909e05df3b1SJaegeuk Kim freed = child_nofs; 910e05df3b1SJaegeuk Kim } 911e05df3b1SJaegeuk Kim 912e05df3b1SJaegeuk Kim if (!ofs) { 913e05df3b1SJaegeuk Kim /* remove current indirect node */ 914e05df3b1SJaegeuk Kim dn->node_page = page; 9157735730dSChao Yu ret = truncate_node(dn); 9167735730dSChao Yu if (ret) 9177735730dSChao Yu goto out_err; 918e05df3b1SJaegeuk Kim freed++; 919e05df3b1SJaegeuk Kim } else { 920e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 921e05df3b1SJaegeuk Kim } 92251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 923e05df3b1SJaegeuk Kim return freed; 924e05df3b1SJaegeuk Kim 925e05df3b1SJaegeuk Kim out_err: 926e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 92751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 928e05df3b1SJaegeuk Kim return ret; 929e05df3b1SJaegeuk Kim } 930e05df3b1SJaegeuk Kim 931e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 932e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 933e05df3b1SJaegeuk Kim { 934e05df3b1SJaegeuk Kim struct page *pages[2]; 935e05df3b1SJaegeuk Kim nid_t nid[3]; 936e05df3b1SJaegeuk Kim nid_t child_nid; 937e05df3b1SJaegeuk Kim int err = 0; 938e05df3b1SJaegeuk Kim int i; 939e05df3b1SJaegeuk Kim int idx = depth - 2; 940e05df3b1SJaegeuk Kim 941e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 942e05df3b1SJaegeuk Kim if (!nid[0]) 943e05df3b1SJaegeuk Kim return 0; 944e05df3b1SJaegeuk Kim 945e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 946a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 947e1c42045Sarter97 /* reference count'll be increased */ 9484d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 949e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 950e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 951a225dca3Sshifei10.ge idx = i - 1; 952e05df3b1SJaegeuk Kim goto fail; 953e05df3b1SJaegeuk Kim } 954e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 955e05df3b1SJaegeuk Kim } 956e05df3b1SJaegeuk Kim 9574d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 95879344efbSJaegeuk Kim 959e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 960a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 961e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 962e05df3b1SJaegeuk Kim if (!child_nid) 963e05df3b1SJaegeuk Kim continue; 964e05df3b1SJaegeuk Kim dn->nid = child_nid; 965e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 966e05df3b1SJaegeuk Kim if (err < 0) 967e05df3b1SJaegeuk Kim goto fail; 96812719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 96993bae099SJaegeuk Kim dn->node_changed = true; 970e05df3b1SJaegeuk Kim } 971e05df3b1SJaegeuk Kim 972a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 973e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 974e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 9757735730dSChao Yu err = truncate_node(dn); 9767735730dSChao Yu if (err) 9777735730dSChao Yu goto fail; 978e05df3b1SJaegeuk Kim } else { 979e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 980e05df3b1SJaegeuk Kim } 981e05df3b1SJaegeuk Kim offset[idx]++; 982a225dca3Sshifei10.ge offset[idx + 1] = 0; 983a225dca3Sshifei10.ge idx--; 984e05df3b1SJaegeuk Kim fail: 985a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 986e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 98751dd6249SNamjae Jeon 98851dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 98951dd6249SNamjae Jeon 990e05df3b1SJaegeuk Kim return err; 991e05df3b1SJaegeuk Kim } 992e05df3b1SJaegeuk Kim 9930a8165d7SJaegeuk Kim /* 994e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 995e05df3b1SJaegeuk Kim */ 9964d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 997e05df3b1SJaegeuk Kim { 9984081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 999e05df3b1SJaegeuk Kim int err = 0, cont = 1; 1000e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 10017dd690c8SJaegeuk Kim unsigned int nofs = 0; 100258bfaf44SJaegeuk Kim struct f2fs_inode *ri; 1003e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1004e05df3b1SJaegeuk Kim struct page *page; 1005e05df3b1SJaegeuk Kim 100651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 100751dd6249SNamjae Jeon 100881ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 1009adb6dc19SJaegeuk Kim if (level < 0) 1010adb6dc19SJaegeuk Kim return level; 1011ff373558SJaegeuk Kim 10124d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 101351dd6249SNamjae Jeon if (IS_ERR(page)) { 101451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 1015e05df3b1SJaegeuk Kim return PTR_ERR(page); 101651dd6249SNamjae Jeon } 1017e05df3b1SJaegeuk Kim 1018e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 1019e05df3b1SJaegeuk Kim unlock_page(page); 1020e05df3b1SJaegeuk Kim 102158bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 1022e05df3b1SJaegeuk Kim switch (level) { 1023e05df3b1SJaegeuk Kim case 0: 1024e05df3b1SJaegeuk Kim case 1: 1025e05df3b1SJaegeuk Kim nofs = noffset[1]; 1026e05df3b1SJaegeuk Kim break; 1027e05df3b1SJaegeuk Kim case 2: 1028e05df3b1SJaegeuk Kim nofs = noffset[1]; 1029e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1030e05df3b1SJaegeuk Kim goto skip_partial; 103158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1032e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1033e05df3b1SJaegeuk Kim goto fail; 1034e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 1035e05df3b1SJaegeuk Kim break; 1036e05df3b1SJaegeuk Kim case 3: 1037e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 1038e05df3b1SJaegeuk Kim if (!offset[level - 1]) 1039e05df3b1SJaegeuk Kim goto skip_partial; 104058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 1041e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1042e05df3b1SJaegeuk Kim goto fail; 1043e05df3b1SJaegeuk Kim break; 1044e05df3b1SJaegeuk Kim default: 1045e05df3b1SJaegeuk Kim BUG(); 1046e05df3b1SJaegeuk Kim } 1047e05df3b1SJaegeuk Kim 1048e05df3b1SJaegeuk Kim skip_partial: 1049e05df3b1SJaegeuk Kim while (cont) { 105058bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 1051e05df3b1SJaegeuk Kim switch (offset[0]) { 1052e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 1053e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 1054e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 1055e05df3b1SJaegeuk Kim break; 1056e05df3b1SJaegeuk Kim 1057e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 1058e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 1059e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 1060e05df3b1SJaegeuk Kim break; 1061e05df3b1SJaegeuk Kim 1062e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 1063e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 1064e05df3b1SJaegeuk Kim cont = 0; 1065e05df3b1SJaegeuk Kim break; 1066e05df3b1SJaegeuk Kim 1067e05df3b1SJaegeuk Kim default: 1068e05df3b1SJaegeuk Kim BUG(); 1069e05df3b1SJaegeuk Kim } 1070e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1071e05df3b1SJaegeuk Kim goto fail; 1072e05df3b1SJaegeuk Kim if (offset[1] == 0 && 107358bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1074e05df3b1SJaegeuk Kim lock_page(page); 1075ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1076fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 107758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1078e05df3b1SJaegeuk Kim set_page_dirty(page); 1079e05df3b1SJaegeuk Kim unlock_page(page); 1080e05df3b1SJaegeuk Kim } 1081e05df3b1SJaegeuk Kim offset[1] = 0; 1082e05df3b1SJaegeuk Kim offset[0]++; 1083e05df3b1SJaegeuk Kim nofs += err; 1084e05df3b1SJaegeuk Kim } 1085e05df3b1SJaegeuk Kim fail: 1086e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 108751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1088e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1089e05df3b1SJaegeuk Kim } 1090e05df3b1SJaegeuk Kim 10919c77f754SJaegeuk Kim /* caller must lock inode page */ 10924d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 10934f16fb0fSJaegeuk Kim { 10944081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 10954f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 10964f16fb0fSJaegeuk Kim struct dnode_of_data dn; 10974f16fb0fSJaegeuk Kim struct page *npage; 10987735730dSChao Yu int err; 10994f16fb0fSJaegeuk Kim 11004f16fb0fSJaegeuk Kim if (!nid) 11014f16fb0fSJaegeuk Kim return 0; 11024f16fb0fSJaegeuk Kim 11034d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 11044f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 11054f16fb0fSJaegeuk Kim return PTR_ERR(npage); 11064f16fb0fSJaegeuk Kim 11077735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 11087735730dSChao Yu err = truncate_node(&dn); 11097735730dSChao Yu if (err) { 11107735730dSChao Yu f2fs_put_page(npage, 1); 11117735730dSChao Yu return err; 11127735730dSChao Yu } 11137735730dSChao Yu 1114205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 111565985d93SJaegeuk Kim 11164f16fb0fSJaegeuk Kim return 0; 11174f16fb0fSJaegeuk Kim } 11184f16fb0fSJaegeuk Kim 111939936837SJaegeuk Kim /* 11204f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 11214f4124d0SChao Yu * f2fs_unlock_op(). 112239936837SJaegeuk Kim */ 11234d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1124e05df3b1SJaegeuk Kim { 1125e05df3b1SJaegeuk Kim struct dnode_of_data dn; 112613ec7297SChao Yu int err; 1127e05df3b1SJaegeuk Kim 1128c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 11294d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 113013ec7297SChao Yu if (err) 113113ec7297SChao Yu return err; 1132e05df3b1SJaegeuk Kim 11334d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 113413ec7297SChao Yu if (err) { 1135c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 113613ec7297SChao Yu return err; 1137e05df3b1SJaegeuk Kim } 1138c2e69583SJaegeuk Kim 1139c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1140c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1141c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 11424d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1143c2e69583SJaegeuk Kim 1144e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 11458d714f8aSJaegeuk Kim if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 11468d714f8aSJaegeuk Kim f2fs_put_dnode(&dn); 11478d714f8aSJaegeuk Kim return -EIO; 11488d714f8aSJaegeuk Kim } 11499850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 11500eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1151c2e69583SJaegeuk Kim 1152c2e69583SJaegeuk Kim /* will put inode & node pages */ 11537735730dSChao Yu err = truncate_node(&dn); 11547735730dSChao Yu if (err) { 11557735730dSChao Yu f2fs_put_dnode(&dn); 11567735730dSChao Yu return err; 11577735730dSChao Yu } 115813ec7297SChao Yu return 0; 1159e05df3b1SJaegeuk Kim } 1160e05df3b1SJaegeuk Kim 11614d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1162e05df3b1SJaegeuk Kim { 1163e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1164e05df3b1SJaegeuk Kim 1165e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1166e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 116744a83ff6SJaegeuk Kim 116844a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 11694d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1170e05df3b1SJaegeuk Kim } 1171e05df3b1SJaegeuk Kim 11724d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1173e05df3b1SJaegeuk Kim { 11744081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 117525cc5d3bSJaegeuk Kim struct node_info new_ni; 1176e05df3b1SJaegeuk Kim struct page *page; 1177e05df3b1SJaegeuk Kim int err; 1178e05df3b1SJaegeuk Kim 117991942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1180e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1181e05df3b1SJaegeuk Kim 1182300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1183e05df3b1SJaegeuk Kim if (!page) 1184e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1185e05df3b1SJaegeuk Kim 11860abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 11879c02740cSJaegeuk Kim goto fail; 11880abd675eSChao Yu 118925cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 11907735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 11917735730dSChao Yu if (err) { 11927735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 11937735730dSChao Yu goto fail; 11947735730dSChao Yu } 119525cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 119625cc5d3bSJaegeuk Kim #endif 119725cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1198e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 119925cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 120025cc5d3bSJaegeuk Kim new_ni.flag = 0; 120125cc5d3bSJaegeuk Kim new_ni.version = 0; 1202479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 12039c02740cSJaegeuk Kim 1204fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 12059c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1206c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1207237c0790SJaegeuk Kim if (!PageUptodate(page)) 12089c02740cSJaegeuk Kim SetPageUptodate(page); 120912719ae1SJaegeuk Kim if (set_page_dirty(page)) 121012719ae1SJaegeuk Kim dn->node_changed = true; 1211e05df3b1SJaegeuk Kim 12124bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1213205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1214479bd73aSJaegeuk Kim 1215e05df3b1SJaegeuk Kim if (ofs == 0) 1216e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1217e05df3b1SJaegeuk Kim return page; 1218e05df3b1SJaegeuk Kim 1219e05df3b1SJaegeuk Kim fail: 122071e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1221e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1222e05df3b1SJaegeuk Kim return ERR_PTR(err); 1223e05df3b1SJaegeuk Kim } 1224e05df3b1SJaegeuk Kim 122556ae674cSJaegeuk Kim /* 122656ae674cSJaegeuk Kim * Caller should do after getting the following values. 122756ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 122886531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 122956ae674cSJaegeuk Kim */ 123004d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1231e05df3b1SJaegeuk Kim { 12324081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1233e05df3b1SJaegeuk Kim struct node_info ni; 1234cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 123505ca3632SJaegeuk Kim .sbi = sbi, 1236cf04e8ebSJaegeuk Kim .type = NODE, 123704d328deSMike Christie .op = REQ_OP_READ, 123804d328deSMike Christie .op_flags = op_flags, 123905ca3632SJaegeuk Kim .page = page, 12404375a336SJaegeuk Kim .encrypted_page = NULL, 1241cf04e8ebSJaegeuk Kim }; 12427735730dSChao Yu int err; 1243e05df3b1SJaegeuk Kim 124454c55c4eSWeichao Guo if (PageUptodate(page)) { 124554c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 124654c55c4eSWeichao Guo f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page)); 124754c55c4eSWeichao Guo #endif 12483bdad3c7SJaegeuk Kim return LOCKED_PAGE; 124954c55c4eSWeichao Guo } 12503bdad3c7SJaegeuk Kim 12517735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 12527735730dSChao Yu if (err) 12537735730dSChao Yu return err; 1254e05df3b1SJaegeuk Kim 125583a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 125683a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 12572bca1e23SJaegeuk Kim ClearPageUptodate(page); 1258e05df3b1SJaegeuk Kim return -ENOENT; 1259393ff91fSJaegeuk Kim } 1260393ff91fSJaegeuk Kim 12617a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 126205ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1263e05df3b1SJaegeuk Kim } 1264e05df3b1SJaegeuk Kim 12650a8165d7SJaegeuk Kim /* 1266e05df3b1SJaegeuk Kim * Readahead a node page 1267e05df3b1SJaegeuk Kim */ 12684d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1269e05df3b1SJaegeuk Kim { 1270e05df3b1SJaegeuk Kim struct page *apage; 127156ae674cSJaegeuk Kim int err; 1272e05df3b1SJaegeuk Kim 1273e8458725SChao Yu if (!nid) 1274e8458725SChao Yu return; 12754d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1276a4f843bdSJaegeuk Kim return; 1277e8458725SChao Yu 1278999270deSFan Li rcu_read_lock(); 1279b93b0163SMatthew Wilcox apage = radix_tree_lookup(&NODE_MAPPING(sbi)->i_pages, nid); 1280999270deSFan Li rcu_read_unlock(); 1281999270deSFan Li if (apage) 1282393ff91fSJaegeuk Kim return; 1283e05df3b1SJaegeuk Kim 1284300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1285e05df3b1SJaegeuk Kim if (!apage) 1286e05df3b1SJaegeuk Kim return; 1287e05df3b1SJaegeuk Kim 128870246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 128986531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1290e05df3b1SJaegeuk Kim } 1291e05df3b1SJaegeuk Kim 129217a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 12930e022ea8SChao Yu struct page *parent, int start) 1294e05df3b1SJaegeuk Kim { 129556ae674cSJaegeuk Kim struct page *page; 129656ae674cSJaegeuk Kim int err; 12974aa69d56SJaegeuk Kim 12984aa69d56SJaegeuk Kim if (!nid) 12994aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 13004d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1301a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1302afcb7ca0SJaegeuk Kim repeat: 1303300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1304e05df3b1SJaegeuk Kim if (!page) 1305e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1306e05df3b1SJaegeuk Kim 130770fd7614SChristoph Hellwig err = read_node_page(page, 0); 130886531d6bSJaegeuk Kim if (err < 0) { 130986531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1310e05df3b1SJaegeuk Kim return ERR_PTR(err); 1311e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 13121f258ec1SChao Yu err = 0; 1313e1c51b9fSChao Yu goto page_hit; 131486531d6bSJaegeuk Kim } 1315aaf96075SJaegeuk Kim 13160e022ea8SChao Yu if (parent) 13174d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 13180e022ea8SChao Yu 1319e1c51b9fSChao Yu lock_page(page); 1320e1c51b9fSChao Yu 13214ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1322afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1323afcb7ca0SJaegeuk Kim goto repeat; 1324afcb7ca0SJaegeuk Kim } 13251563ac75SChao Yu 13261f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 13271f258ec1SChao Yu err = -EIO; 13281563ac75SChao Yu goto out_err; 13291f258ec1SChao Yu } 1330704956ecSChao Yu 1331704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1332704956ecSChao Yu err = -EBADMSG; 1333704956ecSChao Yu goto out_err; 1334704956ecSChao Yu } 1335e1c51b9fSChao Yu page_hit: 13360c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 13371f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 13381f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 13391f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 13401f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 13411f258ec1SChao Yu next_blkaddr_of_node(page)); 13421f258ec1SChao Yu err = -EINVAL; 13430c9df7fbSYunlong Song out_err: 1344ee605234SJaegeuk Kim ClearPageUptodate(page); 13450c9df7fbSYunlong Song f2fs_put_page(page, 1); 13461f258ec1SChao Yu return ERR_PTR(err); 13470c9df7fbSYunlong Song } 1348e05df3b1SJaegeuk Kim return page; 1349e05df3b1SJaegeuk Kim } 1350e05df3b1SJaegeuk Kim 13514d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 13520e022ea8SChao Yu { 13530e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 13540e022ea8SChao Yu } 13550e022ea8SChao Yu 13564d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1357e05df3b1SJaegeuk Kim { 13584081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 13590e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1360e05df3b1SJaegeuk Kim 13610e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1362e05df3b1SJaegeuk Kim } 1363e05df3b1SJaegeuk Kim 13642049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 13652049d4fcSJaegeuk Kim { 13662049d4fcSJaegeuk Kim struct inode *inode; 13672049d4fcSJaegeuk Kim struct page *page; 13680f3311a8SChao Yu int ret; 13692049d4fcSJaegeuk Kim 13702049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 13712049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 13722049d4fcSJaegeuk Kim if (!inode) 13732049d4fcSJaegeuk Kim return; 13742049d4fcSJaegeuk Kim 137501eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 137601eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 13772049d4fcSJaegeuk Kim if (!page) 13782049d4fcSJaegeuk Kim goto iput_out; 13792049d4fcSJaegeuk Kim 13802049d4fcSJaegeuk Kim if (!PageUptodate(page)) 13812049d4fcSJaegeuk Kim goto page_out; 13822049d4fcSJaegeuk Kim 13832049d4fcSJaegeuk Kim if (!PageDirty(page)) 13842049d4fcSJaegeuk Kim goto page_out; 13852049d4fcSJaegeuk Kim 13862049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 13872049d4fcSJaegeuk Kim goto page_out; 13882049d4fcSJaegeuk Kim 13890f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 13902049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 13914d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 13920f3311a8SChao Yu if (ret) 13932049d4fcSJaegeuk Kim set_page_dirty(page); 13942049d4fcSJaegeuk Kim page_out: 13954a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 13962049d4fcSJaegeuk Kim iput_out: 13972049d4fcSJaegeuk Kim iput(inode); 13982049d4fcSJaegeuk Kim } 13992049d4fcSJaegeuk Kim 1400608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1401e05df3b1SJaegeuk Kim { 1402028a63a6SJan Kara pgoff_t index; 1403e05df3b1SJaegeuk Kim struct pagevec pvec; 1404608514deSJaegeuk Kim struct page *last_page = NULL; 1405028a63a6SJan Kara int nr_pages; 140652681375SJaegeuk Kim 140786679820SMel Gorman pagevec_init(&pvec); 140852681375SJaegeuk Kim index = 0; 140952681375SJaegeuk Kim 1410028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 141167fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1412028a63a6SJan Kara int i; 141352681375SJaegeuk Kim 141452681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 141552681375SJaegeuk Kim struct page *page = pvec.pages[i]; 141652681375SJaegeuk Kim 141752681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1418608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 141952681375SJaegeuk Kim pagevec_release(&pvec); 1420608514deSJaegeuk Kim return ERR_PTR(-EIO); 142152681375SJaegeuk Kim } 142252681375SJaegeuk Kim 142352681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 142452681375SJaegeuk Kim continue; 142552681375SJaegeuk Kim if (ino_of_node(page) != ino) 142652681375SJaegeuk Kim continue; 142752681375SJaegeuk Kim 142852681375SJaegeuk Kim lock_page(page); 142952681375SJaegeuk Kim 143052681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 143152681375SJaegeuk Kim continue_unlock: 143252681375SJaegeuk Kim unlock_page(page); 143352681375SJaegeuk Kim continue; 143452681375SJaegeuk Kim } 143552681375SJaegeuk Kim if (ino_of_node(page) != ino) 143652681375SJaegeuk Kim goto continue_unlock; 143752681375SJaegeuk Kim 143852681375SJaegeuk Kim if (!PageDirty(page)) { 143952681375SJaegeuk Kim /* someone wrote it for us */ 144052681375SJaegeuk Kim goto continue_unlock; 144152681375SJaegeuk Kim } 144252681375SJaegeuk Kim 1443608514deSJaegeuk Kim if (last_page) 1444608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1445608514deSJaegeuk Kim 1446608514deSJaegeuk Kim get_page(page); 1447608514deSJaegeuk Kim last_page = page; 1448608514deSJaegeuk Kim unlock_page(page); 1449608514deSJaegeuk Kim } 1450608514deSJaegeuk Kim pagevec_release(&pvec); 1451608514deSJaegeuk Kim cond_resched(); 1452608514deSJaegeuk Kim } 1453608514deSJaegeuk Kim return last_page; 1454608514deSJaegeuk Kim } 1455608514deSJaegeuk Kim 1456d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1457b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 145850fa53ecSChao Yu enum iostat_type io_type, unsigned int *seq_id) 1459faa24895SJaegeuk Kim { 1460faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1461faa24895SJaegeuk Kim nid_t nid; 1462faa24895SJaegeuk Kim struct node_info ni; 1463faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1464faa24895SJaegeuk Kim .sbi = sbi, 146539d787beSChao Yu .ino = ino_of_node(page), 1466faa24895SJaegeuk Kim .type = NODE, 1467faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1468faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1469faa24895SJaegeuk Kim .page = page, 1470faa24895SJaegeuk Kim .encrypted_page = NULL, 1471d68f735bSJaegeuk Kim .submitted = false, 1472b0af6d49SChao Yu .io_type = io_type, 1473578c6478SYufen Yu .io_wbc = wbc, 1474faa24895SJaegeuk Kim }; 147550fa53ecSChao Yu unsigned int seq; 1476faa24895SJaegeuk Kim 1477faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1478faa24895SJaegeuk Kim 1479868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1480868de613SJaegeuk Kim goto redirty_out; 1481db198ae0SChao Yu 1482faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1483faa24895SJaegeuk Kim goto redirty_out; 1484faa24895SJaegeuk Kim 1485fd8c8cafSChao Yu if (wbc->sync_mode == WB_SYNC_NONE && 1486fd8c8cafSChao Yu IS_DNODE(page) && is_cold_node(page)) 1487fd8c8cafSChao Yu goto redirty_out; 1488fd8c8cafSChao Yu 1489faa24895SJaegeuk Kim /* get old block addr of this node page */ 1490faa24895SJaegeuk Kim nid = nid_of_node(page); 1491faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1492faa24895SJaegeuk Kim 14937735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 14947735730dSChao Yu goto redirty_out; 14957735730dSChao Yu 1496faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1497faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1498faa24895SJaegeuk Kim goto redirty_out; 1499faa24895SJaegeuk Kim } else { 1500faa24895SJaegeuk Kim down_read(&sbi->node_write); 1501faa24895SJaegeuk Kim } 1502faa24895SJaegeuk Kim 1503faa24895SJaegeuk Kim /* This page is already truncated */ 1504faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1505faa24895SJaegeuk Kim ClearPageUptodate(page); 1506faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1507faa24895SJaegeuk Kim up_read(&sbi->node_write); 1508faa24895SJaegeuk Kim unlock_page(page); 1509faa24895SJaegeuk Kim return 0; 1510faa24895SJaegeuk Kim } 1511faa24895SJaegeuk Kim 1512c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 1513c9b60788SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC)) 1514c9b60788SChao Yu goto redirty_out; 1515c9b60788SChao Yu 1516e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1517e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1518e7c75ab0SJaegeuk Kim 1519faa24895SJaegeuk Kim set_page_writeback(page); 152017c50035SJaegeuk Kim ClearPageError(page); 152150fa53ecSChao Yu 152250fa53ecSChao Yu if (f2fs_in_warm_node_list(sbi, page)) { 152350fa53ecSChao Yu seq = f2fs_add_fsync_node_entry(sbi, page); 152450fa53ecSChao Yu if (seq_id) 152550fa53ecSChao Yu *seq_id = seq; 152650fa53ecSChao Yu } 152750fa53ecSChao Yu 1528faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 15294d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1530faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1531faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1532faa24895SJaegeuk Kim up_read(&sbi->node_write); 1533faa24895SJaegeuk Kim 1534d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1535b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1536b9109b0eSJaegeuk Kim page->index, NODE); 1537d68f735bSJaegeuk Kim submitted = NULL; 1538d68f735bSJaegeuk Kim } 1539faa24895SJaegeuk Kim 1540faa24895SJaegeuk Kim unlock_page(page); 1541faa24895SJaegeuk Kim 1542d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1543b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1544d68f735bSJaegeuk Kim submitted = NULL; 1545d68f735bSJaegeuk Kim } 1546d68f735bSJaegeuk Kim if (submitted) 1547d68f735bSJaegeuk Kim *submitted = fio.submitted; 1548faa24895SJaegeuk Kim 1549401db79fSYunlong Song if (do_balance) 1550401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1551faa24895SJaegeuk Kim return 0; 1552faa24895SJaegeuk Kim 1553faa24895SJaegeuk Kim redirty_out: 1554faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1555faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1556faa24895SJaegeuk Kim } 1557faa24895SJaegeuk Kim 15584d57b86dSChao Yu void f2fs_move_node_page(struct page *node_page, int gc_type) 1559f15194fcSYunlei He { 1560f15194fcSYunlei He if (gc_type == FG_GC) { 1561f15194fcSYunlei He struct writeback_control wbc = { 1562f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1563f15194fcSYunlei He .nr_to_write = 1, 1564f15194fcSYunlei He .for_reclaim = 0, 1565f15194fcSYunlei He }; 1566f15194fcSYunlei He 1567f15194fcSYunlei He set_page_dirty(node_page); 1568f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1569f15194fcSYunlei He 1570f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1571f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1572f15194fcSYunlei He goto out_page; 1573f15194fcSYunlei He 1574f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 157550fa53ecSChao Yu &wbc, false, FS_GC_NODE_IO, NULL)) 1576f15194fcSYunlei He unlock_page(node_page); 1577f15194fcSYunlei He goto release_page; 1578f15194fcSYunlei He } else { 1579f15194fcSYunlei He /* set page dirty and write it */ 1580f15194fcSYunlei He if (!PageWriteback(node_page)) 1581f15194fcSYunlei He set_page_dirty(node_page); 1582f15194fcSYunlei He } 1583f15194fcSYunlei He out_page: 1584f15194fcSYunlei He unlock_page(node_page); 1585f15194fcSYunlei He release_page: 1586f15194fcSYunlei He f2fs_put_page(node_page, 0); 1587f15194fcSYunlei He } 1588f15194fcSYunlei He 1589faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1590faa24895SJaegeuk Kim struct writeback_control *wbc) 1591faa24895SJaegeuk Kim { 159250fa53ecSChao Yu return __write_node_page(page, false, NULL, wbc, false, 159350fa53ecSChao Yu FS_NODE_IO, NULL); 1594faa24895SJaegeuk Kim } 1595faa24895SJaegeuk Kim 15964d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 159750fa53ecSChao Yu struct writeback_control *wbc, bool atomic, 159850fa53ecSChao Yu unsigned int *seq_id) 1599608514deSJaegeuk Kim { 1600028a63a6SJan Kara pgoff_t index; 1601942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1602608514deSJaegeuk Kim struct pagevec pvec; 1603608514deSJaegeuk Kim int ret = 0; 1604608514deSJaegeuk Kim struct page *last_page = NULL; 1605608514deSJaegeuk Kim bool marked = false; 160626de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1607028a63a6SJan Kara int nr_pages; 1608608514deSJaegeuk Kim 1609608514deSJaegeuk Kim if (atomic) { 1610608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1611608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1612608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1613608514deSJaegeuk Kim } 1614608514deSJaegeuk Kim retry: 161586679820SMel Gorman pagevec_init(&pvec); 1616608514deSJaegeuk Kim index = 0; 1617608514deSJaegeuk Kim 1618028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 161967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1620028a63a6SJan Kara int i; 1621608514deSJaegeuk Kim 1622608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1623608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1624d68f735bSJaegeuk Kim bool submitted = false; 1625608514deSJaegeuk Kim 1626608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1627608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1628608514deSJaegeuk Kim pagevec_release(&pvec); 16299de69279SChao Yu ret = -EIO; 16309de69279SChao Yu goto out; 1631608514deSJaegeuk Kim } 1632608514deSJaegeuk Kim 1633608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1634608514deSJaegeuk Kim continue; 1635608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1636608514deSJaegeuk Kim continue; 1637608514deSJaegeuk Kim 1638608514deSJaegeuk Kim lock_page(page); 1639608514deSJaegeuk Kim 1640608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1641608514deSJaegeuk Kim continue_unlock: 1642608514deSJaegeuk Kim unlock_page(page); 1643608514deSJaegeuk Kim continue; 1644608514deSJaegeuk Kim } 1645608514deSJaegeuk Kim if (ino_of_node(page) != ino) 164652681375SJaegeuk Kim goto continue_unlock; 164752681375SJaegeuk Kim 1648608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1649608514deSJaegeuk Kim /* someone wrote it for us */ 1650608514deSJaegeuk Kim goto continue_unlock; 1651608514deSJaegeuk Kim } 1652608514deSJaegeuk Kim 1653608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1654608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1655608514deSJaegeuk Kim 1656d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1657d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1658d29fd172SJaegeuk Kim 1659608514deSJaegeuk Kim if (!atomic || page == last_page) { 166052681375SJaegeuk Kim set_fsync_mark(page, 1); 166126de9b11SJaegeuk Kim if (IS_INODE(page)) { 166226de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 166326de9b11SJaegeuk Kim FI_DIRTY_INODE)) 16644d57b86dSChao Yu f2fs_update_inode(inode, page); 166552681375SJaegeuk Kim set_dentry_mark(page, 16664d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 166726de9b11SJaegeuk Kim } 1668608514deSJaegeuk Kim /* may be written by other thread */ 1669608514deSJaegeuk Kim if (!PageDirty(page)) 1670608514deSJaegeuk Kim set_page_dirty(page); 1671608514deSJaegeuk Kim } 1672608514deSJaegeuk Kim 1673608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1674608514deSJaegeuk Kim goto continue_unlock; 167552681375SJaegeuk Kim 1676e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1677d68f735bSJaegeuk Kim page == last_page, 1678b0af6d49SChao Yu &submitted, wbc, true, 167950fa53ecSChao Yu FS_NODE_IO, seq_id); 1680c267ec15SJaegeuk Kim if (ret) { 168152681375SJaegeuk Kim unlock_page(page); 1682608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1683608514deSJaegeuk Kim break; 1684d68f735bSJaegeuk Kim } else if (submitted) { 1685942fd319SJaegeuk Kim last_idx = page->index; 1686608514deSJaegeuk Kim } 16873f5f4959SChao Yu 1688608514deSJaegeuk Kim if (page == last_page) { 1689608514deSJaegeuk Kim f2fs_put_page(page, 0); 1690608514deSJaegeuk Kim marked = true; 169152681375SJaegeuk Kim break; 169252681375SJaegeuk Kim } 1693c267ec15SJaegeuk Kim } 169452681375SJaegeuk Kim pagevec_release(&pvec); 169552681375SJaegeuk Kim cond_resched(); 169652681375SJaegeuk Kim 1697608514deSJaegeuk Kim if (ret || marked) 169852681375SJaegeuk Kim break; 169952681375SJaegeuk Kim } 1700608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1701608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1702608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1703608514deSJaegeuk Kim ino, last_page->index); 1704608514deSJaegeuk Kim lock_page(last_page); 1705d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1706608514deSJaegeuk Kim set_page_dirty(last_page); 1707608514deSJaegeuk Kim unlock_page(last_page); 1708608514deSJaegeuk Kim goto retry; 1709608514deSJaegeuk Kim } 17109de69279SChao Yu out: 1711942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1712b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1713c267ec15SJaegeuk Kim return ret ? -EIO: 0; 171452681375SJaegeuk Kim } 171552681375SJaegeuk Kim 17164d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 17174d57b86dSChao Yu struct writeback_control *wbc, 1718b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 171952681375SJaegeuk Kim { 1720028a63a6SJan Kara pgoff_t index; 172152681375SJaegeuk Kim struct pagevec pvec; 172252681375SJaegeuk Kim int step = 0; 172312bb0a8fSJaegeuk Kim int nwritten = 0; 17243f5f4959SChao Yu int ret = 0; 1725c29fd0c0SChao Yu int nr_pages, done = 0; 1726e05df3b1SJaegeuk Kim 172786679820SMel Gorman pagevec_init(&pvec); 1728e05df3b1SJaegeuk Kim 1729e05df3b1SJaegeuk Kim next_step: 1730e05df3b1SJaegeuk Kim index = 0; 1731e05df3b1SJaegeuk Kim 1732c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1733c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1734028a63a6SJan Kara int i; 1735e05df3b1SJaegeuk Kim 1736e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1737e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1738d68f735bSJaegeuk Kim bool submitted = false; 1739e05df3b1SJaegeuk Kim 1740c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1741c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1742c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1743c29fd0c0SChao Yu done = 1; 1744c29fd0c0SChao Yu break; 1745c29fd0c0SChao Yu } 1746c29fd0c0SChao Yu 1747e05df3b1SJaegeuk Kim /* 1748e05df3b1SJaegeuk Kim * flushing sequence with step: 1749e05df3b1SJaegeuk Kim * 0. indirect nodes 1750e05df3b1SJaegeuk Kim * 1. dentry dnodes 1751e05df3b1SJaegeuk Kim * 2. file dnodes 1752e05df3b1SJaegeuk Kim */ 1753e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1754e05df3b1SJaegeuk Kim continue; 1755e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1756e05df3b1SJaegeuk Kim is_cold_node(page))) 1757e05df3b1SJaegeuk Kim continue; 1758e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1759e05df3b1SJaegeuk Kim !is_cold_node(page))) 1760e05df3b1SJaegeuk Kim continue; 17619a4cbc9eSChao Yu lock_node: 17624b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 17634b270a8cSChao Yu lock_page(page); 17644b270a8cSChao Yu else if (!trylock_page(page)) 1765e05df3b1SJaegeuk Kim continue; 1766e05df3b1SJaegeuk Kim 17674ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1768e05df3b1SJaegeuk Kim continue_unlock: 1769e05df3b1SJaegeuk Kim unlock_page(page); 1770e05df3b1SJaegeuk Kim continue; 1771e05df3b1SJaegeuk Kim } 1772e05df3b1SJaegeuk Kim 1773e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1774e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1775e05df3b1SJaegeuk Kim goto continue_unlock; 1776e05df3b1SJaegeuk Kim } 1777e05df3b1SJaegeuk Kim 17782049d4fcSJaegeuk Kim /* flush inline_data */ 177952681375SJaegeuk Kim if (is_inline_node(page)) { 17802049d4fcSJaegeuk Kim clear_inline_node(page); 17812049d4fcSJaegeuk Kim unlock_page(page); 17822049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 17839a4cbc9eSChao Yu goto lock_node; 17842049d4fcSJaegeuk Kim } 17852049d4fcSJaegeuk Kim 1786fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1787fa3d2bdfSJaegeuk Kim 1788fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1789e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1790e05df3b1SJaegeuk Kim goto continue_unlock; 1791e05df3b1SJaegeuk Kim 1792e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1793e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 179452746519SJaegeuk Kim 1795401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 179650fa53ecSChao Yu wbc, do_balance, io_type, NULL); 1797d68f735bSJaegeuk Kim if (ret) 179852746519SJaegeuk Kim unlock_page(page); 1799d68f735bSJaegeuk Kim else if (submitted) 18003f5f4959SChao Yu nwritten++; 1801e05df3b1SJaegeuk Kim 1802e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1803e05df3b1SJaegeuk Kim break; 1804e05df3b1SJaegeuk Kim } 1805e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1806e05df3b1SJaegeuk Kim cond_resched(); 1807e05df3b1SJaegeuk Kim 1808e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1809e05df3b1SJaegeuk Kim step = 2; 1810e05df3b1SJaegeuk Kim break; 1811e05df3b1SJaegeuk Kim } 1812e05df3b1SJaegeuk Kim } 1813e05df3b1SJaegeuk Kim 1814e05df3b1SJaegeuk Kim if (step < 2) { 1815fd8c8cafSChao Yu if (wbc->sync_mode == WB_SYNC_NONE && step == 1) 1816fd8c8cafSChao Yu goto out; 1817e05df3b1SJaegeuk Kim step++; 1818e05df3b1SJaegeuk Kim goto next_step; 1819e05df3b1SJaegeuk Kim } 1820fd8c8cafSChao Yu out: 18213f5f4959SChao Yu if (nwritten) 1822b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1823db198ae0SChao Yu 1824db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1825db198ae0SChao Yu return -EIO; 18263f5f4959SChao Yu return ret; 1827e05df3b1SJaegeuk Kim } 1828e05df3b1SJaegeuk Kim 182950fa53ecSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 183050fa53ecSChao Yu unsigned int seq_id) 1831cfe58f9dSJaegeuk Kim { 183250fa53ecSChao Yu struct fsync_node_entry *fn; 183350fa53ecSChao Yu struct page *page; 183450fa53ecSChao Yu struct list_head *head = &sbi->fsync_node_list; 183550fa53ecSChao Yu unsigned long flags; 183650fa53ecSChao Yu unsigned int cur_seq_id = 0; 1837280db3c8SMiklos Szeredi int ret2, ret = 0; 1838cfe58f9dSJaegeuk Kim 183950fa53ecSChao Yu while (seq_id && cur_seq_id < seq_id) { 184050fa53ecSChao Yu spin_lock_irqsave(&sbi->fsync_node_lock, flags); 184150fa53ecSChao Yu if (list_empty(head)) { 184250fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 184350fa53ecSChao Yu break; 184450fa53ecSChao Yu } 184550fa53ecSChao Yu fn = list_first_entry(head, struct fsync_node_entry, list); 184650fa53ecSChao Yu if (fn->seq_id > seq_id) { 184750fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 184850fa53ecSChao Yu break; 184950fa53ecSChao Yu } 185050fa53ecSChao Yu cur_seq_id = fn->seq_id; 185150fa53ecSChao Yu page = fn->page; 185250fa53ecSChao Yu get_page(page); 185350fa53ecSChao Yu spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); 18544ef51a8fSJaegeuk Kim 1855fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1856cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1857cfe58f9dSJaegeuk Kim ret = -EIO; 185850fa53ecSChao Yu 185950fa53ecSChao Yu put_page(page); 186050fa53ecSChao Yu 186150fa53ecSChao Yu if (ret) 186250fa53ecSChao Yu break; 1863cfe58f9dSJaegeuk Kim } 1864cfe58f9dSJaegeuk Kim 1865280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1866cfe58f9dSJaegeuk Kim if (!ret) 1867cfe58f9dSJaegeuk Kim ret = ret2; 186850fa53ecSChao Yu 1869cfe58f9dSJaegeuk Kim return ret; 1870cfe58f9dSJaegeuk Kim } 1871cfe58f9dSJaegeuk Kim 1872e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1873e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1874e05df3b1SJaegeuk Kim { 18754081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 18769dfa1bafSJaegeuk Kim struct blk_plug plug; 187750c8cdb3SJaegeuk Kim long diff; 1878e05df3b1SJaegeuk Kim 18790771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 18800771fcc7SChao Yu goto skip_write; 18810771fcc7SChao Yu 18824660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 18834660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1884e05df3b1SJaegeuk Kim 1885a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 188687d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1887d3baf95dSJaegeuk Kim goto skip_write; 1888a7fdffbdSJaegeuk Kim 1889c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1890c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1891c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1892c29fd0c0SChao Yu goto skip_write; 1893c29fd0c0SChao Yu 1894d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1895d31c7c3fSYunlei He 189650c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 18979dfa1bafSJaegeuk Kim blk_start_plug(&plug); 18984d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 18999dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 190050c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1901c29fd0c0SChao Yu 1902c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1903c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 1904e05df3b1SJaegeuk Kim return 0; 1905d3baf95dSJaegeuk Kim 1906d3baf95dSJaegeuk Kim skip_write: 1907d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1908d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1909d3baf95dSJaegeuk Kim return 0; 1910e05df3b1SJaegeuk Kim } 1911e05df3b1SJaegeuk Kim 1912e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1913e05df3b1SJaegeuk Kim { 191426c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 191526c6b887SJaegeuk Kim 1916237c0790SJaegeuk Kim if (!PageUptodate(page)) 1917e05df3b1SJaegeuk Kim SetPageUptodate(page); 191854c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 191954c55c4eSWeichao Guo if (IS_INODE(page)) 192054c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 192154c55c4eSWeichao Guo #endif 1922e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1923b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 19244081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1925e05df3b1SJaegeuk Kim SetPagePrivate(page); 19269e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1927e05df3b1SJaegeuk Kim return 1; 1928e05df3b1SJaegeuk Kim } 1929e05df3b1SJaegeuk Kim return 0; 1930e05df3b1SJaegeuk Kim } 1931e05df3b1SJaegeuk Kim 19320a8165d7SJaegeuk Kim /* 1933e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1934e05df3b1SJaegeuk Kim */ 1935e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1936e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1937e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1938e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1939487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1940487261f3SChao Yu .releasepage = f2fs_release_page, 19415b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 19425b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 19435b7a487cSWeichao Guo #endif 1944e05df3b1SJaegeuk Kim }; 1945e05df3b1SJaegeuk Kim 19468a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 19478a7ed66aSJaegeuk Kim nid_t n) 1948e05df3b1SJaegeuk Kim { 19498a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 19503aa770a9SNamjae Jeon } 1951e05df3b1SJaegeuk Kim 19529a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1953a0761f63SFan Li struct free_nid *i, enum nid_state state) 1954e05df3b1SJaegeuk Kim { 1955b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1956b8559dc2SChao Yu 1957eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1958eb0aa4b8SJaegeuk Kim if (err) 1959eb0aa4b8SJaegeuk Kim return err; 1960eb0aa4b8SJaegeuk Kim 19619a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 19629a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 19639a4ffdf5SChao Yu if (state == FREE_NID) 19649a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1965eb0aa4b8SJaegeuk Kim return 0; 1966b8559dc2SChao Yu } 1967b8559dc2SChao Yu 19689a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 1969a0761f63SFan Li struct free_nid *i, enum nid_state state) 1970b8559dc2SChao Yu { 1971b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1972b8559dc2SChao Yu 19739a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 19749a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 19759a4ffdf5SChao Yu if (state == FREE_NID) 1976e05df3b1SJaegeuk Kim list_del(&i->list); 19778a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1978e05df3b1SJaegeuk Kim } 1979e05df3b1SJaegeuk Kim 1980a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 1981a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 1982a0761f63SFan Li { 1983a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1984a0761f63SFan Li 1985a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 1986a0761f63SFan Li i->state = dst_state; 1987a0761f63SFan Li nm_i->nid_cnt[org_state]--; 1988a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 1989a0761f63SFan Li 1990a0761f63SFan Li switch (dst_state) { 1991a0761f63SFan Li case PREALLOC_NID: 1992a0761f63SFan Li list_del(&i->list); 1993a0761f63SFan Li break; 1994a0761f63SFan Li case FREE_NID: 1995a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 1996a0761f63SFan Li break; 1997a0761f63SFan Li default: 1998a0761f63SFan Li BUG_ON(1); 1999a0761f63SFan Li } 2000a0761f63SFan Li } 2001a0761f63SFan Li 20025921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 20035921aaa1SLiFan bool set, bool build) 20045921aaa1SLiFan { 20055921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 20065921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 20075921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 20085921aaa1SLiFan 20095921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 20105921aaa1SLiFan return; 20115921aaa1SLiFan 20125921aaa1SLiFan if (set) { 20135921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 20145921aaa1SLiFan return; 20155921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 20165921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 20175921aaa1SLiFan } else { 20185921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 20195921aaa1SLiFan return; 20205921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 20215921aaa1SLiFan if (!build) 20225921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 20235921aaa1SLiFan } 20245921aaa1SLiFan } 20255921aaa1SLiFan 20264ac91242SChao Yu /* return if the nid is recognized as free */ 20275921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 20285921aaa1SLiFan nid_t nid, bool build, bool update) 2029e05df3b1SJaegeuk Kim { 20306fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 203130a61ddfSChao Yu struct free_nid *i, *e; 203259bbd474SJaegeuk Kim struct nat_entry *ne; 203330a61ddfSChao Yu int err = -EINVAL; 203430a61ddfSChao Yu bool ret = false; 20359198acebSJaegeuk Kim 20369198acebSJaegeuk Kim /* 0 nid should not be used */ 2037cfb271d4SChao Yu if (unlikely(nid == 0)) 20384ac91242SChao Yu return false; 203959bbd474SJaegeuk Kim 20407bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 2041e05df3b1SJaegeuk Kim i->nid = nid; 20429a4ffdf5SChao Yu i->state = FREE_NID; 2043e05df3b1SJaegeuk Kim 20445921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 2045769ec6e5SJaegeuk Kim 2046b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 204730a61ddfSChao Yu 204830a61ddfSChao Yu if (build) { 204930a61ddfSChao Yu /* 205030a61ddfSChao Yu * Thread A Thread B 205130a61ddfSChao Yu * - f2fs_create 205230a61ddfSChao Yu * - f2fs_new_inode 20534d57b86dSChao Yu * - f2fs_alloc_nid 20549a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 205530a61ddfSChao Yu * - f2fs_balance_fs_bg 20564d57b86dSChao Yu * - f2fs_build_free_nids 20574d57b86dSChao Yu * - __f2fs_build_free_nids 205830a61ddfSChao Yu * - scan_nat_page 205930a61ddfSChao Yu * - add_free_nid 206030a61ddfSChao Yu * - __lookup_nat_cache 206130a61ddfSChao Yu * - f2fs_add_link 20624d57b86dSChao Yu * - f2fs_init_inode_metadata 20634d57b86dSChao Yu * - f2fs_new_inode_page 20644d57b86dSChao Yu * - f2fs_new_node_page 206530a61ddfSChao Yu * - set_node_addr 20664d57b86dSChao Yu * - f2fs_alloc_nid_done 20679a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 20689a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 206930a61ddfSChao Yu */ 207030a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 207130a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 207230a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 207330a61ddfSChao Yu goto err_out; 207430a61ddfSChao Yu 207530a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 207630a61ddfSChao Yu if (e) { 20779a4ffdf5SChao Yu if (e->state == FREE_NID) 207830a61ddfSChao Yu ret = true; 207930a61ddfSChao Yu goto err_out; 208030a61ddfSChao Yu } 208130a61ddfSChao Yu } 208230a61ddfSChao Yu ret = true; 2083a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 208430a61ddfSChao Yu err_out: 20855921aaa1SLiFan if (update) { 20865921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 20875921aaa1SLiFan if (!build) 20885921aaa1SLiFan nm_i->available_nids++; 20895921aaa1SLiFan } 2090b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2091769ec6e5SJaegeuk Kim radix_tree_preload_end(); 20925921aaa1SLiFan 209330a61ddfSChao Yu if (err) 2094e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 209530a61ddfSChao Yu return ret; 2096e05df3b1SJaegeuk Kim } 2097e05df3b1SJaegeuk Kim 2098b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2099e05df3b1SJaegeuk Kim { 2100b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2101e05df3b1SJaegeuk Kim struct free_nid *i; 2102cf0ee0f0SChao Yu bool need_free = false; 2103cf0ee0f0SChao Yu 2104b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21058a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 21069a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2107a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2108cf0ee0f0SChao Yu need_free = true; 2109e05df3b1SJaegeuk Kim } 2110b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2111cf0ee0f0SChao Yu 2112cf0ee0f0SChao Yu if (need_free) 2113cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2114e05df3b1SJaegeuk Kim } 2115e05df3b1SJaegeuk Kim 2116e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2117e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2118e05df3b1SJaegeuk Kim { 21196fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2120e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2121e05df3b1SJaegeuk Kim block_t blk_addr; 21224ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2123e05df3b1SJaegeuk Kim int i; 2124e05df3b1SJaegeuk Kim 212523380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 21264ac91242SChao Yu 2127e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2128e05df3b1SJaegeuk Kim 2129e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2130cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 213104431c44SJaegeuk Kim break; 213223d38844SHaicheng Li 2133e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2134e2374015SChao Yu 2135e2374015SChao Yu if (blk_addr == NEW_ADDR) 2136e2374015SChao Yu return -EINVAL; 2137e2374015SChao Yu 21385921aaa1SLiFan if (blk_addr == NULL_ADDR) { 21395921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 21405921aaa1SLiFan } else { 2141346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 21425921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2143346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2144e05df3b1SJaegeuk Kim } 2145e05df3b1SJaegeuk Kim } 2146e2374015SChao Yu 2147e2374015SChao Yu return 0; 21485921aaa1SLiFan } 2149e05df3b1SJaegeuk Kim 21502fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 21514ac91242SChao Yu { 21524ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 21534ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 21542fbaa25fSChao Yu int i; 21554ac91242SChao Yu 21564ac91242SChao Yu down_read(&curseg->journal_rwsem); 21574ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 21584ac91242SChao Yu block_t addr; 21594ac91242SChao Yu nid_t nid; 21604ac91242SChao Yu 21614ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 21624ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 21634ac91242SChao Yu if (addr == NULL_ADDR) 21645921aaa1SLiFan add_free_nid(sbi, nid, true, false); 21654ac91242SChao Yu else 21664ac91242SChao Yu remove_free_nid(sbi, nid); 21674ac91242SChao Yu } 21684ac91242SChao Yu up_read(&curseg->journal_rwsem); 21692fbaa25fSChao Yu } 21702fbaa25fSChao Yu 2171e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 21724ac91242SChao Yu { 21734ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 21744ac91242SChao Yu unsigned int i, idx; 217597456574SFan Li nid_t nid; 21764ac91242SChao Yu 21774ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 21784ac91242SChao Yu 21794ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 21804ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 21814ac91242SChao Yu continue; 21824ac91242SChao Yu if (!nm_i->free_nid_count[i]) 21834ac91242SChao Yu continue; 21844ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 218597456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 218697456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 218797456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 218897456574SFan Li break; 21894ac91242SChao Yu 21904ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 21915921aaa1SLiFan add_free_nid(sbi, nid, true, false); 21924ac91242SChao Yu 21939a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 21944ac91242SChao Yu goto out; 21954ac91242SChao Yu } 21964ac91242SChao Yu } 21974ac91242SChao Yu out: 21982fbaa25fSChao Yu scan_curseg_cache(sbi); 21994ac91242SChao Yu 22004ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 22014ac91242SChao Yu } 22024ac91242SChao Yu 2203e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 22044d57b86dSChao Yu bool sync, bool mount) 2205e05df3b1SJaegeuk Kim { 2206e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2207e2374015SChao Yu int i = 0, ret; 220855008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2209e05df3b1SJaegeuk Kim 2210e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2211e9cdd307SYunlei He nid = 0; 2212e9cdd307SYunlei He 221355008d84SJaegeuk Kim /* Enough entries */ 22149a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2215e2374015SChao Yu return 0; 2216e05df3b1SJaegeuk Kim 22174d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2218e2374015SChao Yu return 0; 2219e05df3b1SJaegeuk Kim 22204ac91242SChao Yu if (!mount) { 22214ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 22224ac91242SChao Yu scan_free_nid_bits(sbi); 22234ac91242SChao Yu 222474986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2225e2374015SChao Yu return 0; 222622ad0b6aSJaegeuk Kim } 222722ad0b6aSJaegeuk Kim 222855008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 22294d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 223026879fb1SChao Yu META_NAT, true); 2231e05df3b1SJaegeuk Kim 2232b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2233a5131193SJaegeuk Kim 2234e05df3b1SJaegeuk Kim while (1) { 223566e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 223666e83361SYunlei He nm_i->nat_block_bitmap)) { 2237e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2238e05df3b1SJaegeuk Kim 2239e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2240e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2241e2374015SChao Yu 2242e2374015SChao Yu if (ret) { 2243e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2244e2374015SChao Yu f2fs_bug_on(sbi, !mount); 2245e2374015SChao Yu f2fs_msg(sbi->sb, KERN_ERR, 2246e2374015SChao Yu "NAT is corrupt, run fsck to fix it"); 2247e2374015SChao Yu return -EINVAL; 2248e2374015SChao Yu } 224966e83361SYunlei He } 2250e05df3b1SJaegeuk Kim 2251e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2252cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2253e05df3b1SJaegeuk Kim nid = 0; 225455008d84SJaegeuk Kim 2255a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2256e05df3b1SJaegeuk Kim break; 2257e05df3b1SJaegeuk Kim } 2258e05df3b1SJaegeuk Kim 225955008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 226055008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2261e05df3b1SJaegeuk Kim 2262e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 22632fbaa25fSChao Yu scan_curseg_cache(sbi); 2264dfc08a12SChao Yu 2265b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 22662db2388fSChao Yu 22674d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2268ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2269e2374015SChao Yu 2270e2374015SChao Yu return 0; 2271e05df3b1SJaegeuk Kim } 2272e05df3b1SJaegeuk Kim 2273e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 22742411cf5bSChao Yu { 2275e2374015SChao Yu int ret; 2276e2374015SChao Yu 22772411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2278e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 22792411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2280e2374015SChao Yu 2281e2374015SChao Yu return ret; 22822411cf5bSChao Yu } 22832411cf5bSChao Yu 2284e05df3b1SJaegeuk Kim /* 2285e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2286e05df3b1SJaegeuk Kim * from second parameter of this function. 2287e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2288e05df3b1SJaegeuk Kim */ 22894d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2290e05df3b1SJaegeuk Kim { 2291e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2292e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2293e05df3b1SJaegeuk Kim retry: 2294cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 229555523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 229655523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2297cb78942bSJaegeuk Kim return false; 229855523519SChao Yu } 2299cb78942bSJaegeuk Kim #endif 2300b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2301e05df3b1SJaegeuk Kim 230204d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 230304d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 230404d47e67SChao Yu return false; 230504d47e67SChao Yu } 2306e05df3b1SJaegeuk Kim 23074d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 23084d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 23099a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 23109a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2311b8559dc2SChao Yu struct free_nid, list); 2312e05df3b1SJaegeuk Kim *nid = i->nid; 2313b8559dc2SChao Yu 2314a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 231504d47e67SChao Yu nm_i->available_nids--; 23164ac91242SChao Yu 2317346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 23184ac91242SChao Yu 2319b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2320e05df3b1SJaegeuk Kim return true; 2321e05df3b1SJaegeuk Kim } 2322b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 232355008d84SJaegeuk Kim 232455008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 23254d57b86dSChao Yu f2fs_build_free_nids(sbi, true, false); 232655008d84SJaegeuk Kim goto retry; 232755008d84SJaegeuk Kim } 2328e05df3b1SJaegeuk Kim 23290a8165d7SJaegeuk Kim /* 23304d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2331e05df3b1SJaegeuk Kim */ 23324d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2333e05df3b1SJaegeuk Kim { 2334e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2335e05df3b1SJaegeuk Kim struct free_nid *i; 2336e05df3b1SJaegeuk Kim 2337b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23388a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2339b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2340a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2341b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2342cf0ee0f0SChao Yu 2343cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2344e05df3b1SJaegeuk Kim } 2345e05df3b1SJaegeuk Kim 23460a8165d7SJaegeuk Kim /* 23474d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2348e05df3b1SJaegeuk Kim */ 23494d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2350e05df3b1SJaegeuk Kim { 235149952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 235249952fa1SJaegeuk Kim struct free_nid *i; 2353cf0ee0f0SChao Yu bool need_free = false; 235449952fa1SJaegeuk Kim 235565985d93SJaegeuk Kim if (!nid) 235665985d93SJaegeuk Kim return; 235765985d93SJaegeuk Kim 2358b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23598a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2360b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2361b8559dc2SChao Yu 23624d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2363a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2364cf0ee0f0SChao Yu need_free = true; 236595630cbaSHaicheng Li } else { 2366a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 236795630cbaSHaicheng Li } 236804d47e67SChao Yu 236904d47e67SChao Yu nm_i->available_nids++; 237004d47e67SChao Yu 2371346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 23724ac91242SChao Yu 2373b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2374cf0ee0f0SChao Yu 2375cf0ee0f0SChao Yu if (need_free) 2376cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2377e05df3b1SJaegeuk Kim } 2378e05df3b1SJaegeuk Kim 23794d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 238031696580SChao Yu { 238131696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 238231696580SChao Yu struct free_nid *i, *next; 238331696580SChao Yu int nr = nr_shrink; 238431696580SChao Yu 23859a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2386ad4edb83SJaegeuk Kim return 0; 2387ad4edb83SJaegeuk Kim 238831696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 238931696580SChao Yu return 0; 239031696580SChao Yu 2391b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 23929a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2393b8559dc2SChao Yu if (nr_shrink <= 0 || 23949a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 239531696580SChao Yu break; 2396b8559dc2SChao Yu 2397a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 239831696580SChao Yu kmem_cache_free(free_nid_slab, i); 239931696580SChao Yu nr_shrink--; 240031696580SChao Yu } 2401b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 240231696580SChao Yu mutex_unlock(&nm_i->build_lock); 240331696580SChao Yu 240431696580SChao Yu return nr - nr_shrink; 240531696580SChao Yu } 240631696580SChao Yu 24074d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 240828cdce04SChao Yu { 240928cdce04SChao Yu void *src_addr, *dst_addr; 241028cdce04SChao Yu size_t inline_size; 241128cdce04SChao Yu struct page *ipage; 241228cdce04SChao Yu struct f2fs_inode *ri; 241328cdce04SChao Yu 24144d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 24159850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 241628cdce04SChao Yu 2417e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 24181eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 24191eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 24201eca05aaSYunlei He } else { 242191942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2422e3b4d43fSJaegeuk Kim goto update_inode; 2423e3b4d43fSJaegeuk Kim } 2424e3b4d43fSJaegeuk Kim 24256afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 24266afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 242728cdce04SChao Yu inline_size = inline_xattr_size(inode); 242828cdce04SChao Yu 2429fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 243028cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2431e3b4d43fSJaegeuk Kim update_inode: 24324d57b86dSChao Yu f2fs_update_inode(inode, ipage); 243328cdce04SChao Yu f2fs_put_page(ipage, 1); 243428cdce04SChao Yu } 243528cdce04SChao Yu 24364d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2437abb2366cSJaegeuk Kim { 24384081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2439abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 244087905682SYunlei He nid_t new_xnid; 244187905682SYunlei He struct dnode_of_data dn; 2442abb2366cSJaegeuk Kim struct node_info ni; 2443d260081cSChao Yu struct page *xpage; 24447735730dSChao Yu int err; 2445abb2366cSJaegeuk Kim 2446abb2366cSJaegeuk Kim if (!prev_xnid) 2447abb2366cSJaegeuk Kim goto recover_xnid; 2448abb2366cSJaegeuk Kim 2449d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 24507735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 24517735730dSChao Yu if (err) 24527735730dSChao Yu return err; 24537735730dSChao Yu 24544d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2455000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2456479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2457abb2366cSJaegeuk Kim 2458abb2366cSJaegeuk Kim recover_xnid: 2459d260081cSChao Yu /* 2: update xattr nid in inode */ 24604d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 246187905682SYunlei He return -ENOSPC; 246287905682SYunlei He 246387905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 24644d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 246587905682SYunlei He if (IS_ERR(xpage)) { 24664d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 246787905682SYunlei He return PTR_ERR(xpage); 246887905682SYunlei He } 246987905682SYunlei He 24704d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 24714d57b86dSChao Yu f2fs_update_inode_page(inode); 2472abb2366cSJaegeuk Kim 2473d260081cSChao Yu /* 3: update and set xattr node page dirty */ 247487905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2475d260081cSChao Yu 2476d260081cSChao Yu set_page_dirty(xpage); 2477d260081cSChao Yu f2fs_put_page(xpage, 1); 2478abb2366cSJaegeuk Kim 2479d260081cSChao Yu return 0; 2480abb2366cSJaegeuk Kim } 2481abb2366cSJaegeuk Kim 24824d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2483e05df3b1SJaegeuk Kim { 248458bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2485e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2486e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2487e05df3b1SJaegeuk Kim struct page *ipage; 24887735730dSChao Yu int err; 2489e05df3b1SJaegeuk Kim 24907735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 24917735730dSChao Yu if (err) 24927735730dSChao Yu return err; 2493e8271fa3SJaegeuk Kim 2494e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2495e8271fa3SJaegeuk Kim return -EINVAL; 2496e8ea9b3dSJaegeuk Kim retry: 2497300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2498e8ea9b3dSJaegeuk Kim if (!ipage) { 2499e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2500e8ea9b3dSJaegeuk Kim goto retry; 2501e8ea9b3dSJaegeuk Kim } 2502e05df3b1SJaegeuk Kim 2503e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2504b8559dc2SChao Yu remove_free_nid(sbi, ino); 2505e05df3b1SJaegeuk Kim 2506237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2507e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2508e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2509c5667575SChao Yu set_cold_node(page, false); 2510e05df3b1SJaegeuk Kim 251158bfaf44SJaegeuk Kim src = F2FS_INODE(page); 251258bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2513e05df3b1SJaegeuk Kim 251458bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 251558bfaf44SJaegeuk Kim dst->i_size = 0; 251658bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 251758bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 251858bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 25197a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 25205c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 25217a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 25226afc662eSChao Yu 25236afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 25246afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25256afc662eSChao Yu i_inline_xattr_size)) 25266afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 25276afc662eSChao Yu 25285c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 25295c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 25305c57132eSChao Yu i_projid)) 25315c57132eSChao Yu dst->i_projid = src->i_projid; 25325c57132eSChao Yu } 2533e05df3b1SJaegeuk Kim 2534e05df3b1SJaegeuk Kim new_ni = old_ni; 2535e05df3b1SJaegeuk Kim new_ni.ino = ino; 2536e05df3b1SJaegeuk Kim 25370abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 253865e5cd0aSJaegeuk Kim WARN_ON(1); 2539479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2540e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2541617deb8cSJaegeuk Kim set_page_dirty(ipage); 2542e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2543e05df3b1SJaegeuk Kim return 0; 2544e05df3b1SJaegeuk Kim } 2545e05df3b1SJaegeuk Kim 25467735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2547e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2548e05df3b1SJaegeuk Kim { 2549e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2550e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2551e05df3b1SJaegeuk Kim block_t addr; 25529ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2553e05df3b1SJaegeuk Kim 2554e05df3b1SJaegeuk Kim /* scan the node segment */ 2555e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2556e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2557e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2558e05df3b1SJaegeuk Kim 25599ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2560664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2561393ff91fSJaegeuk Kim 25629af0ff1cSChao Yu /* readahead node pages */ 25634d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 25649af0ff1cSChao Yu 25659ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 25664d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2567393ff91fSJaegeuk Kim 25687735730dSChao Yu if (IS_ERR(page)) 25697735730dSChao Yu return PTR_ERR(page); 25707735730dSChao Yu 25719ecf4b80SChao Yu rn = F2FS_NODE(page); 2572393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2573393ff91fSJaegeuk Kim sum_entry->version = 0; 2574393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 25759af0ff1cSChao Yu sum_entry++; 25769ecf4b80SChao Yu f2fs_put_page(page, 1); 25779af0ff1cSChao Yu } 2578bac4eef6SChao Yu 25799ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2580bac4eef6SChao Yu addr + nrpages); 25819af0ff1cSChao Yu } 25827735730dSChao Yu return 0; 2583e05df3b1SJaegeuk Kim } 2584e05df3b1SJaegeuk Kim 2585aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2586e05df3b1SJaegeuk Kim { 2587e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2588e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2589b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2590e05df3b1SJaegeuk Kim int i; 2591e05df3b1SJaegeuk Kim 2592b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2593dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2594e05df3b1SJaegeuk Kim struct nat_entry *ne; 2595e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2596dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2597e05df3b1SJaegeuk Kim 2598dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 25999be32d72SJaegeuk Kim 2600e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2601e05df3b1SJaegeuk Kim if (!ne) { 260212f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 260312f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 26049be32d72SJaegeuk Kim } 260504d47e67SChao Yu 260604d47e67SChao Yu /* 260704d47e67SChao Yu * if a free nat in journal has not been used after last 260804d47e67SChao Yu * checkpoint, we should remove it from available nids, 260904d47e67SChao Yu * since later we will add it again. 261004d47e67SChao Yu */ 261104d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 261204d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 261304d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 261404d47e67SChao Yu nm_i->available_nids--; 261504d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 261604d47e67SChao Yu } 261704d47e67SChao Yu 2618e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2619e05df3b1SJaegeuk Kim } 2620dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2621b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2622e05df3b1SJaegeuk Kim } 2623e05df3b1SJaegeuk Kim 2624309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2625309cc2b6SJaegeuk Kim struct list_head *head, int max) 2626e05df3b1SJaegeuk Kim { 2627309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2628e05df3b1SJaegeuk Kim 2629309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2630309cc2b6SJaegeuk Kim goto add_out; 2631e05df3b1SJaegeuk Kim 2632309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2633309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2634309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2635309cc2b6SJaegeuk Kim return; 2636309cc2b6SJaegeuk Kim } 2637309cc2b6SJaegeuk Kim } 2638309cc2b6SJaegeuk Kim add_out: 2639309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2640aec71382SChao Yu } 2641aec71382SChao Yu 26429f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 264322ad0b6aSJaegeuk Kim struct page *page) 264422ad0b6aSJaegeuk Kim { 264522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 264622ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 264722ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 264822ad0b6aSJaegeuk Kim int valid = 0; 264937a0ab2aSFan Li int i = 0; 265022ad0b6aSJaegeuk Kim 265122ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 265222ad0b6aSJaegeuk Kim return; 265322ad0b6aSJaegeuk Kim 265437a0ab2aSFan Li if (nat_index == 0) { 265537a0ab2aSFan Li valid = 1; 265637a0ab2aSFan Li i = 1; 265737a0ab2aSFan Li } 265837a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 265937a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 266022ad0b6aSJaegeuk Kim valid++; 266122ad0b6aSJaegeuk Kim } 266222ad0b6aSJaegeuk Kim if (valid == 0) { 266323380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 266423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 266522ad0b6aSJaegeuk Kim return; 266622ad0b6aSJaegeuk Kim } 266722ad0b6aSJaegeuk Kim 266823380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 266922ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 267023380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 267122ad0b6aSJaegeuk Kim else 267223380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 267322ad0b6aSJaegeuk Kim } 267422ad0b6aSJaegeuk Kim 2675309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 267622ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2677309cc2b6SJaegeuk Kim { 2678309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2679b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2680309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2681309cc2b6SJaegeuk Kim bool to_journal = true; 2682309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2683309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2684309cc2b6SJaegeuk Kim struct page *page = NULL; 2685aec71382SChao Yu 2686aec71382SChao Yu /* 2687aec71382SChao Yu * there are two steps to flush nat entries: 2688aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2689aec71382SChao Yu * #2, flush nat entries to nat page. 2690aec71382SChao Yu */ 269122ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 269222ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2693aec71382SChao Yu to_journal = false; 2694aec71382SChao Yu 2695aec71382SChao Yu if (to_journal) { 2696b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2697aec71382SChao Yu } else { 2698e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2699e05df3b1SJaegeuk Kim nat_blk = page_address(page); 27009850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2701e05df3b1SJaegeuk Kim } 2702e05df3b1SJaegeuk Kim 2703aec71382SChao Yu /* flush dirty nats in nat entry set */ 2704309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2705aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2706aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2707aec71382SChao Yu int offset; 2708aec71382SChao Yu 2709febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2710309cc2b6SJaegeuk Kim 2711aec71382SChao Yu if (to_journal) { 27124d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2713aec71382SChao Yu NAT_JOURNAL, nid, 1); 27149850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2715dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2716dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2717aec71382SChao Yu } else { 2718aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2719aec71382SChao Yu } 2720aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 272188bd02c9SJaegeuk Kim nat_reset_flag(ne); 27220b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 272304d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 27245921aaa1SLiFan add_free_nid(sbi, nid, false, true); 27254ac91242SChao Yu } else { 27264ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2727346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 272804d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 272904d47e67SChao Yu } 2730e05df3b1SJaegeuk Kim } 2731aec71382SChao Yu 273222ad0b6aSJaegeuk Kim if (to_journal) { 2733b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 273422ad0b6aSJaegeuk Kim } else { 273522ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2736e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 273722ad0b6aSJaegeuk Kim } 2738aec71382SChao Yu 273959c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 274059c9081bSYunlei He if (!set->entry_cnt) { 2741309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2742309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2743309cc2b6SJaegeuk Kim } 274459c9081bSYunlei He } 2745aec71382SChao Yu 2746309cc2b6SJaegeuk Kim /* 2747309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2748309cc2b6SJaegeuk Kim */ 27494d57b86dSChao Yu void f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2750309cc2b6SJaegeuk Kim { 2751309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2752309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2753b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 27547aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2755309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2756309cc2b6SJaegeuk Kim unsigned int found; 2757309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2758309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2759309cc2b6SJaegeuk Kim 27607f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 27617f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 27627f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 27637f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 27647f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 27657f2ecdd8SJaegeuk Kim } 27667f2ecdd8SJaegeuk Kim 276720d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 276820d047c8SChangman Lee return; 2769a5131193SJaegeuk Kim 2770b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2771a5131193SJaegeuk Kim 2772309cc2b6SJaegeuk Kim /* 2773309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2774309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2775309cc2b6SJaegeuk Kim * into nat entry set. 2776309cc2b6SJaegeuk Kim */ 2777900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 277822ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2779309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2780309cc2b6SJaegeuk Kim 2781309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 27827aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2783309cc2b6SJaegeuk Kim unsigned idx; 2784309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2785309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2786309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2787dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2788309cc2b6SJaegeuk Kim } 2789309cc2b6SJaegeuk Kim 2790309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2791309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 279222ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2793309cc2b6SJaegeuk Kim 2794b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 279559c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2796e05df3b1SJaegeuk Kim } 2797e05df3b1SJaegeuk Kim 279822ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 279922ad0b6aSJaegeuk Kim { 280022ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 280122ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 280222ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 280322ad0b6aSJaegeuk Kim unsigned int i; 280422ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 280522ad0b6aSJaegeuk Kim block_t nat_bits_addr; 280622ad0b6aSJaegeuk Kim 280722ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 280822ad0b6aSJaegeuk Kim return 0; 280922ad0b6aSJaegeuk Kim 2810df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2811acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2812acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 281322ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 281422ad0b6aSJaegeuk Kim return -ENOMEM; 281522ad0b6aSJaegeuk Kim 281622ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 281722ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 281822ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 28197735730dSChao Yu struct page *page; 28207735730dSChao Yu 28217735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 28227735730dSChao Yu if (IS_ERR(page)) { 28237735730dSChao Yu disable_nat_bits(sbi, true); 28247735730dSChao Yu return PTR_ERR(page); 28257735730dSChao Yu } 282622ad0b6aSJaegeuk Kim 282722ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 282822ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 282922ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 283022ad0b6aSJaegeuk Kim } 283122ad0b6aSJaegeuk Kim 2832ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 283322ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 283422ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 283522ad0b6aSJaegeuk Kim return 0; 283622ad0b6aSJaegeuk Kim } 283722ad0b6aSJaegeuk Kim 283822ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 283922ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 284022ad0b6aSJaegeuk Kim 284122ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 284222ad0b6aSJaegeuk Kim return 0; 284322ad0b6aSJaegeuk Kim } 284422ad0b6aSJaegeuk Kim 2845bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 28467041d5d2SChao Yu { 28477041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 28487041d5d2SChao Yu unsigned int i = 0; 28497041d5d2SChao Yu nid_t nid, last_nid; 28507041d5d2SChao Yu 28517041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 28527041d5d2SChao Yu return; 28537041d5d2SChao Yu 28547041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 28557041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 28567041d5d2SChao Yu if (i >= nm_i->nat_blocks) 28577041d5d2SChao Yu break; 28587041d5d2SChao Yu 28597041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 28607041d5d2SChao Yu 28617041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2862f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 28637041d5d2SChao Yu 2864346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 28657041d5d2SChao Yu for (; nid < last_nid; nid++) 2866346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2867346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 28687041d5d2SChao Yu } 28697041d5d2SChao Yu 28707041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 28717041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 28727041d5d2SChao Yu if (i >= nm_i->nat_blocks) 28737041d5d2SChao Yu break; 28747041d5d2SChao Yu 28757041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 28767041d5d2SChao Yu } 28777041d5d2SChao Yu } 28787041d5d2SChao Yu 2879e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2880e05df3b1SJaegeuk Kim { 2881e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2882e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2883e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 288422ad0b6aSJaegeuk Kim unsigned int nat_segs; 288522ad0b6aSJaegeuk Kim int err; 2886e05df3b1SJaegeuk Kim 2887e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2888e05df3b1SJaegeuk Kim 2889e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2890e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 289122ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 289222ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 28937ee0eeabSJaegeuk Kim 2894b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 289504d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2896292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 28979a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 28989a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2899e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2900cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2901ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 29022304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2903e05df3b1SJaegeuk Kim 29048a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 29059a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2906769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2907769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2908e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2909e05df3b1SJaegeuk Kim 2910e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2911b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2912b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2913e05df3b1SJaegeuk Kim 2914e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 291579b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2916e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2917e05df3b1SJaegeuk Kim if (!version_bitmap) 2918e05df3b1SJaegeuk Kim return -EFAULT; 2919e05df3b1SJaegeuk Kim 292079b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 292179b5793bSAlexandru Gheorghiu GFP_KERNEL); 292279b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 292379b5793bSAlexandru Gheorghiu return -ENOMEM; 2924599a09b2SChao Yu 292522ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 292622ad0b6aSJaegeuk Kim if (err) 292722ad0b6aSJaegeuk Kim return err; 292822ad0b6aSJaegeuk Kim 2929599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2930599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2931599a09b2SChao Yu GFP_KERNEL); 2932599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2933599a09b2SChao Yu return -ENOMEM; 2934599a09b2SChao Yu #endif 2935599a09b2SChao Yu 2936e05df3b1SJaegeuk Kim return 0; 2937e05df3b1SJaegeuk Kim } 2938e05df3b1SJaegeuk Kim 29399f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 29404ac91242SChao Yu { 29414ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2942bb1105e4SJaegeuk Kim int i; 29434ac91242SChao Yu 2944026f0507SKees Cook nm_i->free_nid_bitmap = 2945026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 2946026f0507SKees Cook nm_i->nat_blocks), 2947026f0507SKees Cook GFP_KERNEL); 29484ac91242SChao Yu if (!nm_i->free_nid_bitmap) 29494ac91242SChao Yu return -ENOMEM; 29504ac91242SChao Yu 2951bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 2952bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 2953e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 295468c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 2955bb1105e4SJaegeuk Kim return -ENOMEM; 2956bb1105e4SJaegeuk Kim } 2957bb1105e4SJaegeuk Kim 2958628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 29594ac91242SChao Yu GFP_KERNEL); 29604ac91242SChao Yu if (!nm_i->nat_block_bitmap) 29614ac91242SChao Yu return -ENOMEM; 2962586d1492SChao Yu 29639d2a789cSKees Cook nm_i->free_nid_count = 29649d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 29659d2a789cSKees Cook nm_i->nat_blocks), 29669d2a789cSKees Cook GFP_KERNEL); 2967586d1492SChao Yu if (!nm_i->free_nid_count) 2968586d1492SChao Yu return -ENOMEM; 29694ac91242SChao Yu return 0; 29704ac91242SChao Yu } 29714ac91242SChao Yu 29724d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 2973e05df3b1SJaegeuk Kim { 2974e05df3b1SJaegeuk Kim int err; 2975e05df3b1SJaegeuk Kim 2976acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 2977acbf054dSChao Yu GFP_KERNEL); 2978e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2979e05df3b1SJaegeuk Kim return -ENOMEM; 2980e05df3b1SJaegeuk Kim 2981e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2982e05df3b1SJaegeuk Kim if (err) 2983e05df3b1SJaegeuk Kim return err; 2984e05df3b1SJaegeuk Kim 29854ac91242SChao Yu err = init_free_nid_cache(sbi); 29864ac91242SChao Yu if (err) 29874ac91242SChao Yu return err; 29884ac91242SChao Yu 29897041d5d2SChao Yu /* load free nid status from nat_bits table */ 29907041d5d2SChao Yu load_free_nid_bitmap(sbi); 29917041d5d2SChao Yu 2992e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 2993e05df3b1SJaegeuk Kim } 2994e05df3b1SJaegeuk Kim 29954d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 2996e05df3b1SJaegeuk Kim { 2997e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2998e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2999e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 30007aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 3001e05df3b1SJaegeuk Kim nid_t nid = 0; 3002e05df3b1SJaegeuk Kim unsigned int found; 3003e05df3b1SJaegeuk Kim 3004e05df3b1SJaegeuk Kim if (!nm_i) 3005e05df3b1SJaegeuk Kim return; 3006e05df3b1SJaegeuk Kim 3007e05df3b1SJaegeuk Kim /* destroy free nid list */ 3008b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 30099a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 3010a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 3011b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3012cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 3013b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 3014e05df3b1SJaegeuk Kim } 30159a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 30169a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 30179a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 3018b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 3019e05df3b1SJaegeuk Kim 3020e05df3b1SJaegeuk Kim /* destroy nat cache */ 3021b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 3022e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 3023e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 3024e05df3b1SJaegeuk Kim unsigned idx; 30257aed0d45SJaegeuk Kim 3026b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 3027b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 3028b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 3029e05df3b1SJaegeuk Kim } 30309850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 30317aed0d45SJaegeuk Kim 30327aed0d45SJaegeuk Kim /* destroy nat set cache */ 30337aed0d45SJaegeuk Kim nid = 0; 30347aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 30357aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 30367aed0d45SJaegeuk Kim unsigned idx; 30377aed0d45SJaegeuk Kim 30387aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 30397aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 30407aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 30417aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 30427aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 30437aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 30447aed0d45SJaegeuk Kim } 30457aed0d45SJaegeuk Kim } 3046b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3047e05df3b1SJaegeuk Kim 30484ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 3049bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 3050bb1105e4SJaegeuk Kim int i; 3051bb1105e4SJaegeuk Kim 3052bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 3053bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 3054bb1105e4SJaegeuk Kim kfree(nm_i->free_nid_bitmap); 3055bb1105e4SJaegeuk Kim } 3056586d1492SChao Yu kvfree(nm_i->free_nid_count); 30574ac91242SChao Yu 3058e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 305922ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 3060599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 3061599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 3062599a09b2SChao Yu #endif 3063e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 3064e05df3b1SJaegeuk Kim kfree(nm_i); 3065e05df3b1SJaegeuk Kim } 3066e05df3b1SJaegeuk Kim 30674d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 3068e05df3b1SJaegeuk Kim { 3069e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 3070e8512d2eSGu Zheng sizeof(struct nat_entry)); 3071e05df3b1SJaegeuk Kim if (!nat_entry_slab) 3072aec71382SChao Yu goto fail; 3073e05df3b1SJaegeuk Kim 3074e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 3075e8512d2eSGu Zheng sizeof(struct free_nid)); 3076aec71382SChao Yu if (!free_nid_slab) 3077ce3e6d25SMarkus Elfring goto destroy_nat_entry; 3078aec71382SChao Yu 3079aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 3080aec71382SChao Yu sizeof(struct nat_entry_set)); 3081aec71382SChao Yu if (!nat_entry_set_slab) 3082ce3e6d25SMarkus Elfring goto destroy_free_nid; 308350fa53ecSChao Yu 308450fa53ecSChao Yu fsync_node_entry_slab = f2fs_kmem_cache_create("fsync_node_entry", 308550fa53ecSChao Yu sizeof(struct fsync_node_entry)); 308650fa53ecSChao Yu if (!fsync_node_entry_slab) 308750fa53ecSChao Yu goto destroy_nat_entry_set; 3088e05df3b1SJaegeuk Kim return 0; 3089aec71382SChao Yu 309050fa53ecSChao Yu destroy_nat_entry_set: 309150fa53ecSChao Yu kmem_cache_destroy(nat_entry_set_slab); 3092ce3e6d25SMarkus Elfring destroy_free_nid: 3093aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 3094ce3e6d25SMarkus Elfring destroy_nat_entry: 3095aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 3096aec71382SChao Yu fail: 3097aec71382SChao Yu return -ENOMEM; 3098e05df3b1SJaegeuk Kim } 3099e05df3b1SJaegeuk Kim 31004d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 3101e05df3b1SJaegeuk Kim { 310250fa53ecSChao Yu kmem_cache_destroy(fsync_node_entry_slab); 3103aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 3104e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 3105e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3106e05df3b1SJaegeuk Kim } 3107