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 2668afcf2dSTomohiro Kusumi #define on_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; 31e05df3b1SJaegeuk Kim 326fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 33cdfc41c1SJaegeuk Kim { 346fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 35cdfc41c1SJaegeuk Kim struct sysinfo val; 36e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 37cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 386fb03f3aSJaegeuk Kim bool res = false; 39cdfc41c1SJaegeuk Kim 40cdfc41c1SJaegeuk Kim si_meminfo(&val); 41e5e7ea3cSJaegeuk Kim 42e5e7ea3cSJaegeuk Kim /* only uses low memory */ 43e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 44e5e7ea3cSJaegeuk Kim 45429511cdSChao Yu /* 46429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 47429511cdSChao Yu */ 486fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 499a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 50b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 51e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 526fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 53e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 5409cbfeafSKirill A. Shutemov PAGE_SHIFT; 55e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 56e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 57e589c2c4SJaegeuk Kim res = false; 58a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 59a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 60a1257023SJaegeuk Kim return false; 61a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 62a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 63e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 64e5e7ea3cSJaegeuk Kim int i; 65e5e7ea3cSJaegeuk Kim 6639d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 678f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 688f73cbb7SKinglong Mee sizeof(struct ino_entry); 698f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 70e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 71429511cdSChao Yu } else if (type == EXTENT_CACHE) { 727441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 737441ccefSJaegeuk Kim sizeof(struct extent_tree) + 74429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 7509cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 76429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 7757864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 7857864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 7957864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 8057864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 811e84371fSJaegeuk Kim } else { 821663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 831663cae4SJaegeuk Kim return true; 846fb03f3aSJaegeuk Kim } 856fb03f3aSJaegeuk Kim return res; 86cdfc41c1SJaegeuk Kim } 87cdfc41c1SJaegeuk Kim 88e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 89e05df3b1SJaegeuk Kim { 90e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 91e05df3b1SJaegeuk Kim unsigned int long flags; 92e05df3b1SJaegeuk Kim 93e05df3b1SJaegeuk Kim if (PageDirty(page)) { 94e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 95e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 96e05df3b1SJaegeuk Kim page_index(page), 97e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 98e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 99e05df3b1SJaegeuk Kim 100e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 1014081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 102e05df3b1SJaegeuk Kim } 103e05df3b1SJaegeuk Kim ClearPageUptodate(page); 104e05df3b1SJaegeuk Kim } 105e05df3b1SJaegeuk Kim 106e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 107e05df3b1SJaegeuk Kim { 108e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 109e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 110e05df3b1SJaegeuk Kim } 111e05df3b1SJaegeuk Kim 112e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 113e05df3b1SJaegeuk Kim { 114e05df3b1SJaegeuk Kim struct page *src_page; 115e05df3b1SJaegeuk Kim struct page *dst_page; 116e05df3b1SJaegeuk Kim pgoff_t src_off; 117e05df3b1SJaegeuk Kim pgoff_t dst_off; 118e05df3b1SJaegeuk Kim void *src_addr; 119e05df3b1SJaegeuk Kim void *dst_addr; 120e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 121e05df3b1SJaegeuk Kim 122e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 123e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 124e05df3b1SJaegeuk Kim 125e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 126e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 127e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1289850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 131e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13209cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 133e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 134e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 135e05df3b1SJaegeuk Kim 136e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 137e05df3b1SJaegeuk Kim 138e05df3b1SJaegeuk Kim return dst_page; 139e05df3b1SJaegeuk Kim } 140e05df3b1SJaegeuk Kim 141e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 142e05df3b1SJaegeuk Kim { 143e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 144e05df3b1SJaegeuk Kim } 145e05df3b1SJaegeuk Kim 146e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 147e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 148e05df3b1SJaegeuk Kim { 149e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 150e05df3b1SJaegeuk Kim } 151e05df3b1SJaegeuk Kim 152e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 153e05df3b1SJaegeuk Kim { 154e05df3b1SJaegeuk Kim list_del(&e->list); 155e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 156e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 157e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 158e05df3b1SJaegeuk Kim } 159e05df3b1SJaegeuk Kim 160309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 161309cc2b6SJaegeuk Kim struct nat_entry *ne) 162309cc2b6SJaegeuk Kim { 163309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 164309cc2b6SJaegeuk Kim struct nat_entry_set *head; 165309cc2b6SJaegeuk Kim 166309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 167309cc2b6SJaegeuk Kim if (!head) { 16880c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 169309cc2b6SJaegeuk Kim 170309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 171309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 172309cc2b6SJaegeuk Kim head->set = set; 173309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1749be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 175309cc2b6SJaegeuk Kim } 176febeca6dSChao Yu 177febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 178febeca6dSChao Yu goto refresh_list; 179febeca6dSChao Yu 180309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 181309cc2b6SJaegeuk Kim head->entry_cnt++; 182309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 183febeca6dSChao Yu refresh_list: 184febeca6dSChao Yu if (nat_get_blkaddr(ne) == NEW_ADDR) 185febeca6dSChao Yu list_del_init(&ne->list); 186febeca6dSChao Yu else 187febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 188309cc2b6SJaegeuk Kim } 189309cc2b6SJaegeuk Kim 190309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 1910b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 192309cc2b6SJaegeuk Kim { 193309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 194309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 1950b28b71eSKinglong Mee set->entry_cnt--; 196309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 197309cc2b6SJaegeuk Kim } 198309cc2b6SJaegeuk Kim 199309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 200309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 201309cc2b6SJaegeuk Kim { 202309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 203309cc2b6SJaegeuk Kim start, nr); 204309cc2b6SJaegeuk Kim } 205309cc2b6SJaegeuk Kim 2062dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2072dcf51abSJaegeuk Kim { 2082dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2092dcf51abSJaegeuk Kim struct nat_entry *e; 2102dcf51abSJaegeuk Kim bool need = false; 2112dcf51abSJaegeuk Kim 212b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2132dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2142dcf51abSJaegeuk Kim if (e) { 2152dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2162dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2172dcf51abSJaegeuk Kim need = true; 2182dcf51abSJaegeuk Kim } 219b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2202dcf51abSJaegeuk Kim return need; 2212dcf51abSJaegeuk Kim } 2222dcf51abSJaegeuk Kim 22388bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 224e05df3b1SJaegeuk Kim { 225e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 226e05df3b1SJaegeuk Kim struct nat_entry *e; 22788bd02c9SJaegeuk Kim bool is_cp = true; 228e05df3b1SJaegeuk Kim 229b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 230e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2317ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 23288bd02c9SJaegeuk Kim is_cp = false; 233b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 234e05df3b1SJaegeuk Kim return is_cp; 235e05df3b1SJaegeuk Kim } 236e05df3b1SJaegeuk Kim 23788bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 238b6fe5873SJaegeuk Kim { 239b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 240b6fe5873SJaegeuk Kim struct nat_entry *e; 24188bd02c9SJaegeuk Kim bool need_update = true; 242b6fe5873SJaegeuk Kim 243b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 24488bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 24588bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 24688bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24788bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24888bd02c9SJaegeuk Kim need_update = false; 249b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 25088bd02c9SJaegeuk Kim return need_update; 251b6fe5873SJaegeuk Kim } 252b6fe5873SJaegeuk Kim 2535c9e4184SChao Yu static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 2545c9e4184SChao Yu bool no_fail) 255e05df3b1SJaegeuk Kim { 256e05df3b1SJaegeuk Kim struct nat_entry *new; 257e05df3b1SJaegeuk Kim 2585c9e4184SChao Yu if (no_fail) { 25980c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2609be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 2615c9e4184SChao Yu } else { 2625c9e4184SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2635c9e4184SChao Yu if (!new) 2645c9e4184SChao Yu return NULL; 2655c9e4184SChao Yu if (radix_tree_insert(&nm_i->nat_root, nid, new)) { 2665c9e4184SChao Yu kmem_cache_free(nat_entry_slab, new); 2675c9e4184SChao Yu return NULL; 2685c9e4184SChao Yu } 2695c9e4184SChao Yu } 2705c9e4184SChao Yu 271e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 272e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 27388bd02c9SJaegeuk Kim nat_reset_flag(new); 274e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 275e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 276e05df3b1SJaegeuk Kim return new; 277e05df3b1SJaegeuk Kim } 278e05df3b1SJaegeuk Kim 2791515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 280e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 281e05df3b1SJaegeuk Kim { 2821515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 283e05df3b1SJaegeuk Kim struct nat_entry *e; 2849be32d72SJaegeuk Kim 285e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 286e05df3b1SJaegeuk Kim if (!e) { 2875c9e4184SChao Yu e = grab_nat_entry(nm_i, nid, false); 2885c9e4184SChao Yu if (e) 28994dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 2901515aef0SChao Yu } else { 2910c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 2920c0b471eSEric Biggers nat_get_blkaddr(e) != 2930c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 2941515aef0SChao Yu nat_get_version(e) != ne->version); 295e05df3b1SJaegeuk Kim } 296e05df3b1SJaegeuk Kim } 297e05df3b1SJaegeuk Kim 298e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 299479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 300e05df3b1SJaegeuk Kim { 301e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 302e05df3b1SJaegeuk Kim struct nat_entry *e; 3039be32d72SJaegeuk Kim 304b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 305e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 306e05df3b1SJaegeuk Kim if (!e) { 3075c9e4184SChao Yu e = grab_nat_entry(nm_i, ni->nid, true); 3085c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3099850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 310e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 311e05df3b1SJaegeuk Kim /* 312e05df3b1SJaegeuk Kim * when nid is reallocated, 313e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 314e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 315e05df3b1SJaegeuk Kim */ 3165c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3179850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 318e05df3b1SJaegeuk Kim } 319e05df3b1SJaegeuk Kim 320e05df3b1SJaegeuk Kim /* sanity check */ 3219850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3229850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 323e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3249850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 325e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3269850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 327e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 328e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 329e05df3b1SJaegeuk Kim 330e1c42045Sarter97 /* increment version no as node is removed */ 331e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 332e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 333e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 334e05df3b1SJaegeuk Kim } 335e05df3b1SJaegeuk Kim 336e05df3b1SJaegeuk Kim /* change address */ 337e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 33888bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 33988bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 340e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 341479f40c4SJaegeuk Kim 342479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 343d5b692b7SChao Yu if (ni->nid != ni->ino) 344479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 34588bd02c9SJaegeuk Kim if (e) { 34688bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 34788bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 34888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 34988bd02c9SJaegeuk Kim } 350b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 351e05df3b1SJaegeuk Kim } 352e05df3b1SJaegeuk Kim 3534660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 354e05df3b1SJaegeuk Kim { 355e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3561b38dc8eSJaegeuk Kim int nr = nr_shrink; 357e05df3b1SJaegeuk Kim 358b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 359b873b798SJaegeuk Kim return 0; 360e05df3b1SJaegeuk Kim 361e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 362e05df3b1SJaegeuk Kim struct nat_entry *ne; 363e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 364e05df3b1SJaegeuk Kim struct nat_entry, list); 365e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 366e05df3b1SJaegeuk Kim nr_shrink--; 367e05df3b1SJaegeuk Kim } 368b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3691b38dc8eSJaegeuk Kim return nr - nr_shrink; 370e05df3b1SJaegeuk Kim } 371e05df3b1SJaegeuk Kim 3720a8165d7SJaegeuk Kim /* 373e1c42045Sarter97 * This function always returns success 374e05df3b1SJaegeuk Kim */ 375e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 376e05df3b1SJaegeuk Kim { 377e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 378e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 379b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 380e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 381e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 382e05df3b1SJaegeuk Kim struct page *page = NULL; 383e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 384e05df3b1SJaegeuk Kim struct nat_entry *e; 38566a82d1fSYunlei He pgoff_t index; 386e05df3b1SJaegeuk Kim int i; 387e05df3b1SJaegeuk Kim 388e05df3b1SJaegeuk Kim ni->nid = nid; 389e05df3b1SJaegeuk Kim 390e05df3b1SJaegeuk Kim /* Check nat cache */ 391b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 392e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 393e05df3b1SJaegeuk Kim if (e) { 394e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 395e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 396e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 397b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 398e05df3b1SJaegeuk Kim return; 3991515aef0SChao Yu } 400e05df3b1SJaegeuk Kim 4013547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 4023547ea96SJaegeuk Kim 403e05df3b1SJaegeuk Kim /* Check current segment summary */ 404b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 405dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 406e05df3b1SJaegeuk Kim if (i >= 0) { 407dfc08a12SChao Yu ne = nat_in_journal(journal, i); 408e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 409e05df3b1SJaegeuk Kim } 410b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 41166a82d1fSYunlei He if (i >= 0) { 41266a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 413e05df3b1SJaegeuk Kim goto cache; 41466a82d1fSYunlei He } 415e05df3b1SJaegeuk Kim 416e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 41766a82d1fSYunlei He index = current_nat_addr(sbi, nid); 41866a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 41966a82d1fSYunlei He 42066a82d1fSYunlei He page = get_meta_page(sbi, index); 421e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 422e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 423e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 424e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 425e05df3b1SJaegeuk Kim cache: 426e05df3b1SJaegeuk Kim /* cache nat entry */ 427b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 4281515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 429b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 430e05df3b1SJaegeuk Kim } 431e05df3b1SJaegeuk Kim 43279344efbSJaegeuk Kim /* 43379344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 43479344efbSJaegeuk Kim */ 43579344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 43679344efbSJaegeuk Kim { 43779344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 43879344efbSJaegeuk Kim struct blk_plug plug; 43979344efbSJaegeuk Kim int i, end; 44079344efbSJaegeuk Kim nid_t nid; 44179344efbSJaegeuk Kim 44279344efbSJaegeuk Kim blk_start_plug(&plug); 44379344efbSJaegeuk Kim 44479344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 44579344efbSJaegeuk Kim end = start + n; 44679344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 44779344efbSJaegeuk Kim for (i = start; i < end; i++) { 44879344efbSJaegeuk Kim nid = get_nid(parent, i, false); 44979344efbSJaegeuk Kim ra_node_page(sbi, nid); 45079344efbSJaegeuk Kim } 45179344efbSJaegeuk Kim 45279344efbSJaegeuk Kim blk_finish_plug(&plug); 45379344efbSJaegeuk Kim } 45479344efbSJaegeuk Kim 4553cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4563cf45747SChao Yu { 4573cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4583cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4593cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4603cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4613cf45747SChao Yu int cur_level = dn->cur_level; 4623cf45747SChao Yu int max_level = dn->max_level; 4633cf45747SChao Yu pgoff_t base = 0; 4643cf45747SChao Yu 4653cf45747SChao Yu if (!dn->max_level) 4663cf45747SChao Yu return pgofs + 1; 4673cf45747SChao Yu 4683cf45747SChao Yu while (max_level-- > cur_level) 4693cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4703cf45747SChao Yu 4713cf45747SChao Yu switch (dn->max_level) { 4723cf45747SChao Yu case 3: 4733cf45747SChao Yu base += 2 * indirect_blks; 4743cf45747SChao Yu case 2: 4753cf45747SChao Yu base += 2 * direct_blks; 4763cf45747SChao Yu case 1: 4773cf45747SChao Yu base += direct_index; 4783cf45747SChao Yu break; 4793cf45747SChao Yu default: 4803cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 4813cf45747SChao Yu } 4823cf45747SChao Yu 4833cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 4843cf45747SChao Yu } 4853cf45747SChao Yu 4860a8165d7SJaegeuk Kim /* 487e05df3b1SJaegeuk Kim * The maximum depth is four. 488e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 489e05df3b1SJaegeuk Kim */ 49081ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 491de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 492e05df3b1SJaegeuk Kim { 49381ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 494e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 495e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 496e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 497e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 498e05df3b1SJaegeuk Kim int n = 0; 499e05df3b1SJaegeuk Kim int level = 0; 500e05df3b1SJaegeuk Kim 501e05df3b1SJaegeuk Kim noffset[0] = 0; 502e05df3b1SJaegeuk Kim 503e05df3b1SJaegeuk Kim if (block < direct_index) { 50425c0a6e5SNamjae Jeon offset[n] = block; 505e05df3b1SJaegeuk Kim goto got; 506e05df3b1SJaegeuk Kim } 507e05df3b1SJaegeuk Kim block -= direct_index; 508e05df3b1SJaegeuk Kim if (block < direct_blks) { 509e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 510e05df3b1SJaegeuk Kim noffset[n] = 1; 51125c0a6e5SNamjae Jeon offset[n] = block; 512e05df3b1SJaegeuk Kim level = 1; 513e05df3b1SJaegeuk Kim goto got; 514e05df3b1SJaegeuk Kim } 515e05df3b1SJaegeuk Kim block -= direct_blks; 516e05df3b1SJaegeuk Kim if (block < direct_blks) { 517e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 518e05df3b1SJaegeuk Kim noffset[n] = 2; 51925c0a6e5SNamjae Jeon offset[n] = block; 520e05df3b1SJaegeuk Kim level = 1; 521e05df3b1SJaegeuk Kim goto got; 522e05df3b1SJaegeuk Kim } 523e05df3b1SJaegeuk Kim block -= direct_blks; 524e05df3b1SJaegeuk Kim if (block < indirect_blks) { 525e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 526e05df3b1SJaegeuk Kim noffset[n] = 3; 527e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 528e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 52925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 530e05df3b1SJaegeuk Kim level = 2; 531e05df3b1SJaegeuk Kim goto got; 532e05df3b1SJaegeuk Kim } 533e05df3b1SJaegeuk Kim block -= indirect_blks; 534e05df3b1SJaegeuk Kim if (block < indirect_blks) { 535e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 536e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 537e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 538e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 53925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 540e05df3b1SJaegeuk Kim level = 2; 541e05df3b1SJaegeuk Kim goto got; 542e05df3b1SJaegeuk Kim } 543e05df3b1SJaegeuk Kim block -= indirect_blks; 544e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 545e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 546e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 547e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 548e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 549e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 550e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 551e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 552e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 553e05df3b1SJaegeuk Kim offset[n - 1]; 55425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 555e05df3b1SJaegeuk Kim level = 3; 556e05df3b1SJaegeuk Kim goto got; 557e05df3b1SJaegeuk Kim } else { 558adb6dc19SJaegeuk Kim return -E2BIG; 559e05df3b1SJaegeuk Kim } 560e05df3b1SJaegeuk Kim got: 561e05df3b1SJaegeuk Kim return level; 562e05df3b1SJaegeuk Kim } 563e05df3b1SJaegeuk Kim 564e05df3b1SJaegeuk Kim /* 565e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5664f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5674f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 56839936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 569e05df3b1SJaegeuk Kim */ 570266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 571e05df3b1SJaegeuk Kim { 5724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 573e05df3b1SJaegeuk Kim struct page *npage[4]; 574f1a3b98eSJaegeuk Kim struct page *parent = NULL; 575e05df3b1SJaegeuk Kim int offset[4]; 576e05df3b1SJaegeuk Kim unsigned int noffset[4]; 577e05df3b1SJaegeuk Kim nid_t nids[4]; 5783cf45747SChao Yu int level, i = 0; 579e05df3b1SJaegeuk Kim int err = 0; 580e05df3b1SJaegeuk Kim 58181ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 582adb6dc19SJaegeuk Kim if (level < 0) 583adb6dc19SJaegeuk Kim return level; 584e05df3b1SJaegeuk Kim 585e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5861646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5871646cfacSJaegeuk Kim 5881646cfacSJaegeuk Kim if (!npage[0]) { 589e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 590e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 591e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5921646cfacSJaegeuk Kim } 593f1a3b98eSJaegeuk Kim 594f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 595f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 59676629165SJaegeuk Kim err = -ENOENT; 597f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 598f1a3b98eSJaegeuk Kim goto release_out; 599f1a3b98eSJaegeuk Kim } 600f1a3b98eSJaegeuk Kim 601e05df3b1SJaegeuk Kim parent = npage[0]; 60252c2db3fSChangman Lee if (level != 0) 603e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 604e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 605e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 606e05df3b1SJaegeuk Kim 607e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 608e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 609e05df3b1SJaegeuk Kim bool done = false; 610e05df3b1SJaegeuk Kim 611266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 612e05df3b1SJaegeuk Kim /* alloc new node */ 613e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 614e05df3b1SJaegeuk Kim err = -ENOSPC; 615e05df3b1SJaegeuk Kim goto release_pages; 616e05df3b1SJaegeuk Kim } 617e05df3b1SJaegeuk Kim 618e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6195f4ce6abSYunlei He npage[i] = new_node_page(dn, noffset[i]); 620e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 621e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 622e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 623e05df3b1SJaegeuk Kim goto release_pages; 624e05df3b1SJaegeuk Kim } 625e05df3b1SJaegeuk Kim 626e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 627e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 628e05df3b1SJaegeuk Kim done = true; 629266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 630e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 631e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 632e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 633e05df3b1SJaegeuk Kim goto release_pages; 634e05df3b1SJaegeuk Kim } 635e05df3b1SJaegeuk Kim done = true; 636e05df3b1SJaegeuk Kim } 637e05df3b1SJaegeuk Kim if (i == 1) { 638e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 639e05df3b1SJaegeuk Kim unlock_page(parent); 640e05df3b1SJaegeuk Kim } else { 641e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 642e05df3b1SJaegeuk Kim } 643e05df3b1SJaegeuk Kim 644e05df3b1SJaegeuk Kim if (!done) { 645e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 646e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 647e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 648e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 649e05df3b1SJaegeuk Kim goto release_out; 650e05df3b1SJaegeuk Kim } 651e05df3b1SJaegeuk Kim } 652e05df3b1SJaegeuk Kim if (i < level) { 653e05df3b1SJaegeuk Kim parent = npage[i]; 654e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 655e05df3b1SJaegeuk Kim } 656e05df3b1SJaegeuk Kim } 657e05df3b1SJaegeuk Kim dn->nid = nids[level]; 658e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 659e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 6607a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 6617a2af766SChao Yu dn->node_page, dn->ofs_in_node); 662e05df3b1SJaegeuk Kim return 0; 663e05df3b1SJaegeuk Kim 664e05df3b1SJaegeuk Kim release_pages: 665e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 666e05df3b1SJaegeuk Kim if (i > 1) 667e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 668e05df3b1SJaegeuk Kim release_out: 669e05df3b1SJaegeuk Kim dn->inode_page = NULL; 670e05df3b1SJaegeuk Kim dn->node_page = NULL; 6713cf45747SChao Yu if (err == -ENOENT) { 6723cf45747SChao Yu dn->cur_level = i; 6733cf45747SChao Yu dn->max_level = level; 6740a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 6753cf45747SChao Yu } 676e05df3b1SJaegeuk Kim return err; 677e05df3b1SJaegeuk Kim } 678e05df3b1SJaegeuk Kim 679e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 680e05df3b1SJaegeuk Kim { 6814081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 682e05df3b1SJaegeuk Kim struct node_info ni; 683e05df3b1SJaegeuk Kim 684e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 6859850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 686e05df3b1SJaegeuk Kim 687e05df3b1SJaegeuk Kim /* Deallocate node address */ 68871e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 689000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 690479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 691e05df3b1SJaegeuk Kim 692e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 693e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 694e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 6950f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 696e05df3b1SJaegeuk Kim } 697000519f2SChao Yu 698e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 699caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 700e05df3b1SJaegeuk Kim 701e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 702bf39c00aSJaegeuk Kim 703bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 704bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 705bf39c00aSJaegeuk Kim 706e05df3b1SJaegeuk Kim dn->node_page = NULL; 70751dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 708e05df3b1SJaegeuk Kim } 709e05df3b1SJaegeuk Kim 710e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 711e05df3b1SJaegeuk Kim { 712e05df3b1SJaegeuk Kim struct page *page; 713e05df3b1SJaegeuk Kim 714e05df3b1SJaegeuk Kim if (dn->nid == 0) 715e05df3b1SJaegeuk Kim return 1; 716e05df3b1SJaegeuk Kim 717e05df3b1SJaegeuk Kim /* get direct node */ 7184081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 719e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 720e05df3b1SJaegeuk Kim return 1; 721e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 722e05df3b1SJaegeuk Kim return PTR_ERR(page); 723e05df3b1SJaegeuk Kim 724e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 725e05df3b1SJaegeuk Kim dn->node_page = page; 726e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 727e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 728e05df3b1SJaegeuk Kim truncate_node(dn); 729e05df3b1SJaegeuk Kim return 1; 730e05df3b1SJaegeuk Kim } 731e05df3b1SJaegeuk Kim 732e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 733e05df3b1SJaegeuk Kim int ofs, int depth) 734e05df3b1SJaegeuk Kim { 735e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 736e05df3b1SJaegeuk Kim struct page *page; 737e05df3b1SJaegeuk Kim struct f2fs_node *rn; 738e05df3b1SJaegeuk Kim nid_t child_nid; 739e05df3b1SJaegeuk Kim unsigned int child_nofs; 740e05df3b1SJaegeuk Kim int freed = 0; 741e05df3b1SJaegeuk Kim int i, ret; 742e05df3b1SJaegeuk Kim 743e05df3b1SJaegeuk Kim if (dn->nid == 0) 744e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 745e05df3b1SJaegeuk Kim 74651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 74751dd6249SNamjae Jeon 7484081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 74951dd6249SNamjae Jeon if (IS_ERR(page)) { 75051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 751e05df3b1SJaegeuk Kim return PTR_ERR(page); 75251dd6249SNamjae Jeon } 753e05df3b1SJaegeuk Kim 75479344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 75579344efbSJaegeuk Kim 75645590710SGu Zheng rn = F2FS_NODE(page); 757e05df3b1SJaegeuk Kim if (depth < 3) { 758e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 759e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 760e05df3b1SJaegeuk Kim if (child_nid == 0) 761e05df3b1SJaegeuk Kim continue; 762e05df3b1SJaegeuk Kim rdn.nid = child_nid; 763e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 764e05df3b1SJaegeuk Kim if (ret < 0) 765e05df3b1SJaegeuk Kim goto out_err; 76612719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 76793bae099SJaegeuk Kim dn->node_changed = true; 768e05df3b1SJaegeuk Kim } 769e05df3b1SJaegeuk Kim } else { 770e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 771e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 772e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 773e05df3b1SJaegeuk Kim if (child_nid == 0) { 774e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 775e05df3b1SJaegeuk Kim continue; 776e05df3b1SJaegeuk Kim } 777e05df3b1SJaegeuk Kim rdn.nid = child_nid; 778e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 779e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 78012719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 78193bae099SJaegeuk Kim dn->node_changed = true; 782e05df3b1SJaegeuk Kim child_nofs += ret; 783e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 784e05df3b1SJaegeuk Kim goto out_err; 785e05df3b1SJaegeuk Kim } 786e05df3b1SJaegeuk Kim } 787e05df3b1SJaegeuk Kim freed = child_nofs; 788e05df3b1SJaegeuk Kim } 789e05df3b1SJaegeuk Kim 790e05df3b1SJaegeuk Kim if (!ofs) { 791e05df3b1SJaegeuk Kim /* remove current indirect node */ 792e05df3b1SJaegeuk Kim dn->node_page = page; 793e05df3b1SJaegeuk Kim truncate_node(dn); 794e05df3b1SJaegeuk Kim freed++; 795e05df3b1SJaegeuk Kim } else { 796e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 797e05df3b1SJaegeuk Kim } 79851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 799e05df3b1SJaegeuk Kim return freed; 800e05df3b1SJaegeuk Kim 801e05df3b1SJaegeuk Kim out_err: 802e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 80351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 804e05df3b1SJaegeuk Kim return ret; 805e05df3b1SJaegeuk Kim } 806e05df3b1SJaegeuk Kim 807e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 808e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 809e05df3b1SJaegeuk Kim { 810e05df3b1SJaegeuk Kim struct page *pages[2]; 811e05df3b1SJaegeuk Kim nid_t nid[3]; 812e05df3b1SJaegeuk Kim nid_t child_nid; 813e05df3b1SJaegeuk Kim int err = 0; 814e05df3b1SJaegeuk Kim int i; 815e05df3b1SJaegeuk Kim int idx = depth - 2; 816e05df3b1SJaegeuk Kim 817e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 818e05df3b1SJaegeuk Kim if (!nid[0]) 819e05df3b1SJaegeuk Kim return 0; 820e05df3b1SJaegeuk Kim 821e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 822a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 823e1c42045Sarter97 /* reference count'll be increased */ 8244081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 825e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 826e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 827a225dca3Sshifei10.ge idx = i - 1; 828e05df3b1SJaegeuk Kim goto fail; 829e05df3b1SJaegeuk Kim } 830e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 831e05df3b1SJaegeuk Kim } 832e05df3b1SJaegeuk Kim 83379344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 83479344efbSJaegeuk Kim 835e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 836a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 837e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 838e05df3b1SJaegeuk Kim if (!child_nid) 839e05df3b1SJaegeuk Kim continue; 840e05df3b1SJaegeuk Kim dn->nid = child_nid; 841e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 842e05df3b1SJaegeuk Kim if (err < 0) 843e05df3b1SJaegeuk Kim goto fail; 84412719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 84593bae099SJaegeuk Kim dn->node_changed = true; 846e05df3b1SJaegeuk Kim } 847e05df3b1SJaegeuk Kim 848a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 849e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 850e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 851e05df3b1SJaegeuk Kim truncate_node(dn); 852e05df3b1SJaegeuk Kim } else { 853e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 854e05df3b1SJaegeuk Kim } 855e05df3b1SJaegeuk Kim offset[idx]++; 856a225dca3Sshifei10.ge offset[idx + 1] = 0; 857a225dca3Sshifei10.ge idx--; 858e05df3b1SJaegeuk Kim fail: 859a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 860e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 86151dd6249SNamjae Jeon 86251dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 86351dd6249SNamjae Jeon 864e05df3b1SJaegeuk Kim return err; 865e05df3b1SJaegeuk Kim } 866e05df3b1SJaegeuk Kim 8670a8165d7SJaegeuk Kim /* 868e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 869e05df3b1SJaegeuk Kim */ 870e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 871e05df3b1SJaegeuk Kim { 8724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 873e05df3b1SJaegeuk Kim int err = 0, cont = 1; 874e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8757dd690c8SJaegeuk Kim unsigned int nofs = 0; 87658bfaf44SJaegeuk Kim struct f2fs_inode *ri; 877e05df3b1SJaegeuk Kim struct dnode_of_data dn; 878e05df3b1SJaegeuk Kim struct page *page; 879e05df3b1SJaegeuk Kim 88051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 88151dd6249SNamjae Jeon 88281ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 883adb6dc19SJaegeuk Kim if (level < 0) 884adb6dc19SJaegeuk Kim return level; 885ff373558SJaegeuk Kim 886e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 88751dd6249SNamjae Jeon if (IS_ERR(page)) { 88851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 889e05df3b1SJaegeuk Kim return PTR_ERR(page); 89051dd6249SNamjae Jeon } 891e05df3b1SJaegeuk Kim 892e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 893e05df3b1SJaegeuk Kim unlock_page(page); 894e05df3b1SJaegeuk Kim 89558bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 896e05df3b1SJaegeuk Kim switch (level) { 897e05df3b1SJaegeuk Kim case 0: 898e05df3b1SJaegeuk Kim case 1: 899e05df3b1SJaegeuk Kim nofs = noffset[1]; 900e05df3b1SJaegeuk Kim break; 901e05df3b1SJaegeuk Kim case 2: 902e05df3b1SJaegeuk Kim nofs = noffset[1]; 903e05df3b1SJaegeuk Kim if (!offset[level - 1]) 904e05df3b1SJaegeuk Kim goto skip_partial; 90558bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 906e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 907e05df3b1SJaegeuk Kim goto fail; 908e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 909e05df3b1SJaegeuk Kim break; 910e05df3b1SJaegeuk Kim case 3: 911e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 912e05df3b1SJaegeuk Kim if (!offset[level - 1]) 913e05df3b1SJaegeuk Kim goto skip_partial; 91458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 915e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 916e05df3b1SJaegeuk Kim goto fail; 917e05df3b1SJaegeuk Kim break; 918e05df3b1SJaegeuk Kim default: 919e05df3b1SJaegeuk Kim BUG(); 920e05df3b1SJaegeuk Kim } 921e05df3b1SJaegeuk Kim 922e05df3b1SJaegeuk Kim skip_partial: 923e05df3b1SJaegeuk Kim while (cont) { 92458bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 925e05df3b1SJaegeuk Kim switch (offset[0]) { 926e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 927e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 928e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 929e05df3b1SJaegeuk Kim break; 930e05df3b1SJaegeuk Kim 931e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 932e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 933e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 934e05df3b1SJaegeuk Kim break; 935e05df3b1SJaegeuk Kim 936e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 937e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 938e05df3b1SJaegeuk Kim cont = 0; 939e05df3b1SJaegeuk Kim break; 940e05df3b1SJaegeuk Kim 941e05df3b1SJaegeuk Kim default: 942e05df3b1SJaegeuk Kim BUG(); 943e05df3b1SJaegeuk Kim } 944e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 945e05df3b1SJaegeuk Kim goto fail; 946e05df3b1SJaegeuk Kim if (offset[1] == 0 && 94758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 948e05df3b1SJaegeuk Kim lock_page(page); 949ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 950fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 95158bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 952e05df3b1SJaegeuk Kim set_page_dirty(page); 953e05df3b1SJaegeuk Kim unlock_page(page); 954e05df3b1SJaegeuk Kim } 955e05df3b1SJaegeuk Kim offset[1] = 0; 956e05df3b1SJaegeuk Kim offset[0]++; 957e05df3b1SJaegeuk Kim nofs += err; 958e05df3b1SJaegeuk Kim } 959e05df3b1SJaegeuk Kim fail: 960e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 96151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 962e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 963e05df3b1SJaegeuk Kim } 964e05df3b1SJaegeuk Kim 9659c77f754SJaegeuk Kim /* caller must lock inode page */ 9669c77f754SJaegeuk Kim int truncate_xattr_node(struct inode *inode) 9674f16fb0fSJaegeuk Kim { 9684081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9694f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9704f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9714f16fb0fSJaegeuk Kim struct page *npage; 9724f16fb0fSJaegeuk Kim 9734f16fb0fSJaegeuk Kim if (!nid) 9744f16fb0fSJaegeuk Kim return 0; 9754f16fb0fSJaegeuk Kim 9764f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9774f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9784f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9794f16fb0fSJaegeuk Kim 980205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 98165985d93SJaegeuk Kim 9829c77f754SJaegeuk Kim set_new_dnode(&dn, inode, NULL, npage, nid); 9834f16fb0fSJaegeuk Kim truncate_node(&dn); 9844f16fb0fSJaegeuk Kim return 0; 9854f16fb0fSJaegeuk Kim } 9864f16fb0fSJaegeuk Kim 98739936837SJaegeuk Kim /* 9884f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9894f4124d0SChao Yu * f2fs_unlock_op(). 99039936837SJaegeuk Kim */ 99113ec7297SChao Yu int remove_inode_page(struct inode *inode) 992e05df3b1SJaegeuk Kim { 993e05df3b1SJaegeuk Kim struct dnode_of_data dn; 99413ec7297SChao Yu int err; 995e05df3b1SJaegeuk Kim 996c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 99713ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 99813ec7297SChao Yu if (err) 99913ec7297SChao Yu return err; 1000e05df3b1SJaegeuk Kim 10019c77f754SJaegeuk Kim err = truncate_xattr_node(inode); 100213ec7297SChao Yu if (err) { 1003c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 100413ec7297SChao Yu return err; 1005e05df3b1SJaegeuk Kim } 1006c2e69583SJaegeuk Kim 1007c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1008c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1009c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 1010c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 1011c2e69583SJaegeuk Kim 1012e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10139850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10140eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1015c2e69583SJaegeuk Kim 1016c2e69583SJaegeuk Kim /* will put inode & node pages */ 1017e05df3b1SJaegeuk Kim truncate_node(&dn); 101813ec7297SChao Yu return 0; 1019e05df3b1SJaegeuk Kim } 1020e05df3b1SJaegeuk Kim 1021a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1022e05df3b1SJaegeuk Kim { 1023e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1024e05df3b1SJaegeuk Kim 1025e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1026e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 102744a83ff6SJaegeuk Kim 102844a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10295f4ce6abSYunlei He return new_node_page(&dn, 0); 1030e05df3b1SJaegeuk Kim } 1031e05df3b1SJaegeuk Kim 10325f4ce6abSYunlei He struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1033e05df3b1SJaegeuk Kim { 10344081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 103525cc5d3bSJaegeuk Kim struct node_info new_ni; 1036e05df3b1SJaegeuk Kim struct page *page; 1037e05df3b1SJaegeuk Kim int err; 1038e05df3b1SJaegeuk Kim 103991942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1040e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1041e05df3b1SJaegeuk Kim 1042300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1043e05df3b1SJaegeuk Kim if (!page) 1044e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1045e05df3b1SJaegeuk Kim 10460abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 10479c02740cSJaegeuk Kim goto fail; 10480abd675eSChao Yu 104925cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 105025cc5d3bSJaegeuk Kim get_node_info(sbi, dn->nid, &new_ni); 105125cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 105225cc5d3bSJaegeuk Kim #endif 105325cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1054e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 105525cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 105625cc5d3bSJaegeuk Kim new_ni.flag = 0; 105725cc5d3bSJaegeuk Kim new_ni.version = 0; 1058479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10599c02740cSJaegeuk Kim 1060fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10619c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1062398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 1063237c0790SJaegeuk Kim if (!PageUptodate(page)) 10649c02740cSJaegeuk Kim SetPageUptodate(page); 106512719ae1SJaegeuk Kim if (set_page_dirty(page)) 106612719ae1SJaegeuk Kim dn->node_changed = true; 1067e05df3b1SJaegeuk Kim 10684bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1069205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1070479bd73aSJaegeuk Kim 1071e05df3b1SJaegeuk Kim if (ofs == 0) 1072e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1073e05df3b1SJaegeuk Kim return page; 1074e05df3b1SJaegeuk Kim 1075e05df3b1SJaegeuk Kim fail: 107671e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1077e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1078e05df3b1SJaegeuk Kim return ERR_PTR(err); 1079e05df3b1SJaegeuk Kim } 1080e05df3b1SJaegeuk Kim 108156ae674cSJaegeuk Kim /* 108256ae674cSJaegeuk Kim * Caller should do after getting the following values. 108356ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 108486531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 108556ae674cSJaegeuk Kim */ 108604d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1087e05df3b1SJaegeuk Kim { 10884081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1089e05df3b1SJaegeuk Kim struct node_info ni; 1090cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 109105ca3632SJaegeuk Kim .sbi = sbi, 1092cf04e8ebSJaegeuk Kim .type = NODE, 109304d328deSMike Christie .op = REQ_OP_READ, 109404d328deSMike Christie .op_flags = op_flags, 109505ca3632SJaegeuk Kim .page = page, 10964375a336SJaegeuk Kim .encrypted_page = NULL, 1097cf04e8ebSJaegeuk Kim }; 1098e05df3b1SJaegeuk Kim 10993bdad3c7SJaegeuk Kim if (PageUptodate(page)) 11003bdad3c7SJaegeuk Kim return LOCKED_PAGE; 11013bdad3c7SJaegeuk Kim 1102e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1103e05df3b1SJaegeuk Kim 11046bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 11052bca1e23SJaegeuk Kim ClearPageUptodate(page); 1106e05df3b1SJaegeuk Kim return -ENOENT; 1107393ff91fSJaegeuk Kim } 1108393ff91fSJaegeuk Kim 11097a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 111005ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1111e05df3b1SJaegeuk Kim } 1112e05df3b1SJaegeuk Kim 11130a8165d7SJaegeuk Kim /* 1114e05df3b1SJaegeuk Kim * Readahead a node page 1115e05df3b1SJaegeuk Kim */ 1116e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1117e05df3b1SJaegeuk Kim { 1118e05df3b1SJaegeuk Kim struct page *apage; 111956ae674cSJaegeuk Kim int err; 1120e05df3b1SJaegeuk Kim 1121e8458725SChao Yu if (!nid) 1122e8458725SChao Yu return; 1123e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1124e8458725SChao Yu 1125999270deSFan Li rcu_read_lock(); 1126999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1127999270deSFan Li rcu_read_unlock(); 1128999270deSFan Li if (apage) 1129393ff91fSJaegeuk Kim return; 1130e05df3b1SJaegeuk Kim 1131300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1132e05df3b1SJaegeuk Kim if (!apage) 1133e05df3b1SJaegeuk Kim return; 1134e05df3b1SJaegeuk Kim 113570246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 113686531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1137e05df3b1SJaegeuk Kim } 1138e05df3b1SJaegeuk Kim 113917a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11400e022ea8SChao Yu struct page *parent, int start) 1141e05df3b1SJaegeuk Kim { 114256ae674cSJaegeuk Kim struct page *page; 114356ae674cSJaegeuk Kim int err; 11444aa69d56SJaegeuk Kim 11454aa69d56SJaegeuk Kim if (!nid) 11464aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11474aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1148afcb7ca0SJaegeuk Kim repeat: 1149300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1150e05df3b1SJaegeuk Kim if (!page) 1151e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1152e05df3b1SJaegeuk Kim 115370fd7614SChristoph Hellwig err = read_node_page(page, 0); 115486531d6bSJaegeuk Kim if (err < 0) { 115586531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1156e05df3b1SJaegeuk Kim return ERR_PTR(err); 1157e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 11581f258ec1SChao Yu err = 0; 1159e1c51b9fSChao Yu goto page_hit; 116086531d6bSJaegeuk Kim } 1161aaf96075SJaegeuk Kim 11620e022ea8SChao Yu if (parent) 116379344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11640e022ea8SChao Yu 1165e1c51b9fSChao Yu lock_page(page); 1166e1c51b9fSChao Yu 11674ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1168afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1169afcb7ca0SJaegeuk Kim goto repeat; 1170afcb7ca0SJaegeuk Kim } 11711563ac75SChao Yu 11721f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 11731f258ec1SChao Yu err = -EIO; 11741563ac75SChao Yu goto out_err; 11751f258ec1SChao Yu } 1176704956ecSChao Yu 1177704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1178704956ecSChao Yu err = -EBADMSG; 1179704956ecSChao Yu goto out_err; 1180704956ecSChao Yu } 1181e1c51b9fSChao Yu page_hit: 11820c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 11831f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 11841f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 11851f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 11861f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 11871f258ec1SChao Yu next_blkaddr_of_node(page)); 11881f258ec1SChao Yu err = -EINVAL; 11890c9df7fbSYunlong Song out_err: 1190ee605234SJaegeuk Kim ClearPageUptodate(page); 11910c9df7fbSYunlong Song f2fs_put_page(page, 1); 11921f258ec1SChao Yu return ERR_PTR(err); 11930c9df7fbSYunlong Song } 1194e05df3b1SJaegeuk Kim return page; 1195e05df3b1SJaegeuk Kim } 1196e05df3b1SJaegeuk Kim 11970e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11980e022ea8SChao Yu { 11990e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 12000e022ea8SChao Yu } 12010e022ea8SChao Yu 1202e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1203e05df3b1SJaegeuk Kim { 12044081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 12050e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1206e05df3b1SJaegeuk Kim 12070e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1208e05df3b1SJaegeuk Kim } 1209e05df3b1SJaegeuk Kim 12102049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 12112049d4fcSJaegeuk Kim { 12122049d4fcSJaegeuk Kim struct inode *inode; 12132049d4fcSJaegeuk Kim struct page *page; 12140f3311a8SChao Yu int ret; 12152049d4fcSJaegeuk Kim 12162049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 12172049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 12182049d4fcSJaegeuk Kim if (!inode) 12192049d4fcSJaegeuk Kim return; 12202049d4fcSJaegeuk Kim 122101eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 122201eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 12232049d4fcSJaegeuk Kim if (!page) 12242049d4fcSJaegeuk Kim goto iput_out; 12252049d4fcSJaegeuk Kim 12262049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12272049d4fcSJaegeuk Kim goto page_out; 12282049d4fcSJaegeuk Kim 12292049d4fcSJaegeuk Kim if (!PageDirty(page)) 12302049d4fcSJaegeuk Kim goto page_out; 12312049d4fcSJaegeuk Kim 12322049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12332049d4fcSJaegeuk Kim goto page_out; 12342049d4fcSJaegeuk Kim 12350f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12362049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 1237933439c8SChao Yu remove_dirty_inode(inode); 12380f3311a8SChao Yu if (ret) 12392049d4fcSJaegeuk Kim set_page_dirty(page); 12402049d4fcSJaegeuk Kim page_out: 12414a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12422049d4fcSJaegeuk Kim iput_out: 12432049d4fcSJaegeuk Kim iput(inode); 12442049d4fcSJaegeuk Kim } 12452049d4fcSJaegeuk Kim 1246608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1247e05df3b1SJaegeuk Kim { 1248e05df3b1SJaegeuk Kim pgoff_t index, end; 1249e05df3b1SJaegeuk Kim struct pagevec pvec; 1250608514deSJaegeuk Kim struct page *last_page = NULL; 125152681375SJaegeuk Kim 125252681375SJaegeuk Kim pagevec_init(&pvec, 0); 125352681375SJaegeuk Kim index = 0; 125452681375SJaegeuk Kim end = ULONG_MAX; 125552681375SJaegeuk Kim 125652681375SJaegeuk Kim while (index <= end) { 125752681375SJaegeuk Kim int i, nr_pages; 125852681375SJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 125952681375SJaegeuk Kim PAGECACHE_TAG_DIRTY, 126052681375SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 126152681375SJaegeuk Kim if (nr_pages == 0) 126252681375SJaegeuk Kim break; 126352681375SJaegeuk Kim 126452681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 126552681375SJaegeuk Kim struct page *page = pvec.pages[i]; 126652681375SJaegeuk Kim 126752681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1268608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 126952681375SJaegeuk Kim pagevec_release(&pvec); 1270608514deSJaegeuk Kim return ERR_PTR(-EIO); 127152681375SJaegeuk Kim } 127252681375SJaegeuk Kim 127352681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 127452681375SJaegeuk Kim continue; 127552681375SJaegeuk Kim if (ino_of_node(page) != ino) 127652681375SJaegeuk Kim continue; 127752681375SJaegeuk Kim 127852681375SJaegeuk Kim lock_page(page); 127952681375SJaegeuk Kim 128052681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 128152681375SJaegeuk Kim continue_unlock: 128252681375SJaegeuk Kim unlock_page(page); 128352681375SJaegeuk Kim continue; 128452681375SJaegeuk Kim } 128552681375SJaegeuk Kim if (ino_of_node(page) != ino) 128652681375SJaegeuk Kim goto continue_unlock; 128752681375SJaegeuk Kim 128852681375SJaegeuk Kim if (!PageDirty(page)) { 128952681375SJaegeuk Kim /* someone wrote it for us */ 129052681375SJaegeuk Kim goto continue_unlock; 129152681375SJaegeuk Kim } 129252681375SJaegeuk Kim 1293608514deSJaegeuk Kim if (last_page) 1294608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1295608514deSJaegeuk Kim 1296608514deSJaegeuk Kim get_page(page); 1297608514deSJaegeuk Kim last_page = page; 1298608514deSJaegeuk Kim unlock_page(page); 1299608514deSJaegeuk Kim } 1300608514deSJaegeuk Kim pagevec_release(&pvec); 1301608514deSJaegeuk Kim cond_resched(); 1302608514deSJaegeuk Kim } 1303608514deSJaegeuk Kim return last_page; 1304608514deSJaegeuk Kim } 1305608514deSJaegeuk Kim 1306d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1307b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 1308b0af6d49SChao Yu enum iostat_type io_type) 1309faa24895SJaegeuk Kim { 1310faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1311faa24895SJaegeuk Kim nid_t nid; 1312faa24895SJaegeuk Kim struct node_info ni; 1313faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1314faa24895SJaegeuk Kim .sbi = sbi, 131539d787beSChao Yu .ino = ino_of_node(page), 1316faa24895SJaegeuk Kim .type = NODE, 1317faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1318faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1319faa24895SJaegeuk Kim .page = page, 1320faa24895SJaegeuk Kim .encrypted_page = NULL, 1321d68f735bSJaegeuk Kim .submitted = false, 1322b0af6d49SChao Yu .io_type = io_type, 1323faa24895SJaegeuk Kim }; 1324faa24895SJaegeuk Kim 1325faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1326faa24895SJaegeuk Kim 1327faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1328faa24895SJaegeuk Kim goto redirty_out; 1329faa24895SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1330faa24895SJaegeuk Kim goto redirty_out; 1331faa24895SJaegeuk Kim 1332faa24895SJaegeuk Kim /* get old block addr of this node page */ 1333faa24895SJaegeuk Kim nid = nid_of_node(page); 1334faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1335faa24895SJaegeuk Kim 1336faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1337faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1338faa24895SJaegeuk Kim goto redirty_out; 1339faa24895SJaegeuk Kim } else { 1340faa24895SJaegeuk Kim down_read(&sbi->node_write); 1341faa24895SJaegeuk Kim } 1342faa24895SJaegeuk Kim 1343faa24895SJaegeuk Kim get_node_info(sbi, nid, &ni); 1344faa24895SJaegeuk Kim 1345faa24895SJaegeuk Kim /* This page is already truncated */ 1346faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1347faa24895SJaegeuk Kim ClearPageUptodate(page); 1348faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1349faa24895SJaegeuk Kim up_read(&sbi->node_write); 1350faa24895SJaegeuk Kim unlock_page(page); 1351faa24895SJaegeuk Kim return 0; 1352faa24895SJaegeuk Kim } 1353faa24895SJaegeuk Kim 1354e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1355e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1356e7c75ab0SJaegeuk Kim 1357faa24895SJaegeuk Kim set_page_writeback(page); 1358faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 1359faa24895SJaegeuk Kim write_node_page(nid, &fio); 1360faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1361faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1362faa24895SJaegeuk Kim up_read(&sbi->node_write); 1363faa24895SJaegeuk Kim 1364d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1365b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1366b9109b0eSJaegeuk Kim page->index, NODE); 1367d68f735bSJaegeuk Kim submitted = NULL; 1368d68f735bSJaegeuk Kim } 1369faa24895SJaegeuk Kim 1370faa24895SJaegeuk Kim unlock_page(page); 1371faa24895SJaegeuk Kim 1372d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1373b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1374d68f735bSJaegeuk Kim submitted = NULL; 1375d68f735bSJaegeuk Kim } 1376d68f735bSJaegeuk Kim if (submitted) 1377d68f735bSJaegeuk Kim *submitted = fio.submitted; 1378faa24895SJaegeuk Kim 1379401db79fSYunlong Song if (do_balance) 1380401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1381faa24895SJaegeuk Kim return 0; 1382faa24895SJaegeuk Kim 1383faa24895SJaegeuk Kim redirty_out: 1384faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1385faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1386faa24895SJaegeuk Kim } 1387faa24895SJaegeuk Kim 1388f15194fcSYunlei He void move_node_page(struct page *node_page, int gc_type) 1389f15194fcSYunlei He { 1390f15194fcSYunlei He if (gc_type == FG_GC) { 1391f15194fcSYunlei He struct writeback_control wbc = { 1392f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1393f15194fcSYunlei He .nr_to_write = 1, 1394f15194fcSYunlei He .for_reclaim = 0, 1395f15194fcSYunlei He }; 1396f15194fcSYunlei He 1397f15194fcSYunlei He set_page_dirty(node_page); 1398f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1399f15194fcSYunlei He 1400f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1401f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1402f15194fcSYunlei He goto out_page; 1403f15194fcSYunlei He 1404f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 1405f15194fcSYunlei He &wbc, false, FS_GC_NODE_IO)) 1406f15194fcSYunlei He unlock_page(node_page); 1407f15194fcSYunlei He goto release_page; 1408f15194fcSYunlei He } else { 1409f15194fcSYunlei He /* set page dirty and write it */ 1410f15194fcSYunlei He if (!PageWriteback(node_page)) 1411f15194fcSYunlei He set_page_dirty(node_page); 1412f15194fcSYunlei He } 1413f15194fcSYunlei He out_page: 1414f15194fcSYunlei He unlock_page(node_page); 1415f15194fcSYunlei He release_page: 1416f15194fcSYunlei He f2fs_put_page(node_page, 0); 1417f15194fcSYunlei He } 1418f15194fcSYunlei He 1419faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1420faa24895SJaegeuk Kim struct writeback_control *wbc) 1421faa24895SJaegeuk Kim { 1422b0af6d49SChao Yu return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); 1423faa24895SJaegeuk Kim } 1424faa24895SJaegeuk Kim 142526de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1426608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1427608514deSJaegeuk Kim { 1428608514deSJaegeuk Kim pgoff_t index, end; 1429942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1430608514deSJaegeuk Kim struct pagevec pvec; 1431608514deSJaegeuk Kim int ret = 0; 1432608514deSJaegeuk Kim struct page *last_page = NULL; 1433608514deSJaegeuk Kim bool marked = false; 143426de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1435608514deSJaegeuk Kim 1436608514deSJaegeuk Kim if (atomic) { 1437608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1438608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1439608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1440608514deSJaegeuk Kim } 1441608514deSJaegeuk Kim retry: 1442608514deSJaegeuk Kim pagevec_init(&pvec, 0); 1443608514deSJaegeuk Kim index = 0; 1444608514deSJaegeuk Kim end = ULONG_MAX; 1445608514deSJaegeuk Kim 1446608514deSJaegeuk Kim while (index <= end) { 1447608514deSJaegeuk Kim int i, nr_pages; 1448608514deSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1449608514deSJaegeuk Kim PAGECACHE_TAG_DIRTY, 1450608514deSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1451608514deSJaegeuk Kim if (nr_pages == 0) 1452608514deSJaegeuk Kim break; 1453608514deSJaegeuk Kim 1454608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1455608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1456d68f735bSJaegeuk Kim bool submitted = false; 1457608514deSJaegeuk Kim 1458608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1459608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1460608514deSJaegeuk Kim pagevec_release(&pvec); 14619de69279SChao Yu ret = -EIO; 14629de69279SChao Yu goto out; 1463608514deSJaegeuk Kim } 1464608514deSJaegeuk Kim 1465608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1466608514deSJaegeuk Kim continue; 1467608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1468608514deSJaegeuk Kim continue; 1469608514deSJaegeuk Kim 1470608514deSJaegeuk Kim lock_page(page); 1471608514deSJaegeuk Kim 1472608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1473608514deSJaegeuk Kim continue_unlock: 1474608514deSJaegeuk Kim unlock_page(page); 1475608514deSJaegeuk Kim continue; 1476608514deSJaegeuk Kim } 1477608514deSJaegeuk Kim if (ino_of_node(page) != ino) 147852681375SJaegeuk Kim goto continue_unlock; 147952681375SJaegeuk Kim 1480608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1481608514deSJaegeuk Kim /* someone wrote it for us */ 1482608514deSJaegeuk Kim goto continue_unlock; 1483608514deSJaegeuk Kim } 1484608514deSJaegeuk Kim 1485608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1486608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1487608514deSJaegeuk Kim 1488d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1489d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1490d29fd172SJaegeuk Kim 1491608514deSJaegeuk Kim if (!atomic || page == last_page) { 149252681375SJaegeuk Kim set_fsync_mark(page, 1); 149326de9b11SJaegeuk Kim if (IS_INODE(page)) { 149426de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 149526de9b11SJaegeuk Kim FI_DIRTY_INODE)) 149626de9b11SJaegeuk Kim update_inode(inode, page); 149752681375SJaegeuk Kim set_dentry_mark(page, 149852681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 149926de9b11SJaegeuk Kim } 1500608514deSJaegeuk Kim /* may be written by other thread */ 1501608514deSJaegeuk Kim if (!PageDirty(page)) 1502608514deSJaegeuk Kim set_page_dirty(page); 1503608514deSJaegeuk Kim } 1504608514deSJaegeuk Kim 1505608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1506608514deSJaegeuk Kim goto continue_unlock; 150752681375SJaegeuk Kim 1508e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1509d68f735bSJaegeuk Kim page == last_page, 1510b0af6d49SChao Yu &submitted, wbc, true, 1511b0af6d49SChao Yu FS_NODE_IO); 1512c267ec15SJaegeuk Kim if (ret) { 151352681375SJaegeuk Kim unlock_page(page); 1514608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1515608514deSJaegeuk Kim break; 1516d68f735bSJaegeuk Kim } else if (submitted) { 1517942fd319SJaegeuk Kim last_idx = page->index; 1518608514deSJaegeuk Kim } 15193f5f4959SChao Yu 1520608514deSJaegeuk Kim if (page == last_page) { 1521608514deSJaegeuk Kim f2fs_put_page(page, 0); 1522608514deSJaegeuk Kim marked = true; 152352681375SJaegeuk Kim break; 152452681375SJaegeuk Kim } 1525c267ec15SJaegeuk Kim } 152652681375SJaegeuk Kim pagevec_release(&pvec); 152752681375SJaegeuk Kim cond_resched(); 152852681375SJaegeuk Kim 1529608514deSJaegeuk Kim if (ret || marked) 153052681375SJaegeuk Kim break; 153152681375SJaegeuk Kim } 1532608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1533608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1534608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1535608514deSJaegeuk Kim ino, last_page->index); 1536608514deSJaegeuk Kim lock_page(last_page); 1537d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1538608514deSJaegeuk Kim set_page_dirty(last_page); 1539608514deSJaegeuk Kim unlock_page(last_page); 1540608514deSJaegeuk Kim goto retry; 1541608514deSJaegeuk Kim } 15429de69279SChao Yu out: 1543942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1544b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1545c267ec15SJaegeuk Kim return ret ? -EIO: 0; 154652681375SJaegeuk Kim } 154752681375SJaegeuk Kim 1548401db79fSYunlong Song int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, 1549b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 155052681375SJaegeuk Kim { 155152681375SJaegeuk Kim pgoff_t index, end; 155252681375SJaegeuk Kim struct pagevec pvec; 155352681375SJaegeuk Kim int step = 0; 155412bb0a8fSJaegeuk Kim int nwritten = 0; 15553f5f4959SChao Yu int ret = 0; 1556e05df3b1SJaegeuk Kim 1557e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1558e05df3b1SJaegeuk Kim 1559e05df3b1SJaegeuk Kim next_step: 1560e05df3b1SJaegeuk Kim index = 0; 156180dd9c0eSChao Yu end = ULONG_MAX; 1562e05df3b1SJaegeuk Kim 1563e05df3b1SJaegeuk Kim while (index <= end) { 1564e05df3b1SJaegeuk Kim int i, nr_pages; 15654ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1566e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1567e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1568e05df3b1SJaegeuk Kim if (nr_pages == 0) 1569e05df3b1SJaegeuk Kim break; 1570e05df3b1SJaegeuk Kim 1571e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1572e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1573d68f735bSJaegeuk Kim bool submitted = false; 1574e05df3b1SJaegeuk Kim 15756d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 15766d5a1495SChao Yu pagevec_release(&pvec); 15773f5f4959SChao Yu ret = -EIO; 15783f5f4959SChao Yu goto out; 15796d5a1495SChao Yu } 15806d5a1495SChao Yu 1581e05df3b1SJaegeuk Kim /* 1582e05df3b1SJaegeuk Kim * flushing sequence with step: 1583e05df3b1SJaegeuk Kim * 0. indirect nodes 1584e05df3b1SJaegeuk Kim * 1. dentry dnodes 1585e05df3b1SJaegeuk Kim * 2. file dnodes 1586e05df3b1SJaegeuk Kim */ 1587e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1588e05df3b1SJaegeuk Kim continue; 1589e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1590e05df3b1SJaegeuk Kim is_cold_node(page))) 1591e05df3b1SJaegeuk Kim continue; 1592e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1593e05df3b1SJaegeuk Kim !is_cold_node(page))) 1594e05df3b1SJaegeuk Kim continue; 15959a4cbc9eSChao Yu lock_node: 159652681375SJaegeuk Kim if (!trylock_page(page)) 1597e05df3b1SJaegeuk Kim continue; 1598e05df3b1SJaegeuk Kim 15994ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1600e05df3b1SJaegeuk Kim continue_unlock: 1601e05df3b1SJaegeuk Kim unlock_page(page); 1602e05df3b1SJaegeuk Kim continue; 1603e05df3b1SJaegeuk Kim } 1604e05df3b1SJaegeuk Kim 1605e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1606e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1607e05df3b1SJaegeuk Kim goto continue_unlock; 1608e05df3b1SJaegeuk Kim } 1609e05df3b1SJaegeuk Kim 16102049d4fcSJaegeuk Kim /* flush inline_data */ 161152681375SJaegeuk Kim if (is_inline_node(page)) { 16122049d4fcSJaegeuk Kim clear_inline_node(page); 16132049d4fcSJaegeuk Kim unlock_page(page); 16142049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 16159a4cbc9eSChao Yu goto lock_node; 16162049d4fcSJaegeuk Kim } 16172049d4fcSJaegeuk Kim 1618fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1619fa3d2bdfSJaegeuk Kim 1620fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1621e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1622e05df3b1SJaegeuk Kim goto continue_unlock; 1623e05df3b1SJaegeuk Kim 1624e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1625e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 162652746519SJaegeuk Kim 1627401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 1628b0af6d49SChao Yu wbc, do_balance, io_type); 1629d68f735bSJaegeuk Kim if (ret) 163052746519SJaegeuk Kim unlock_page(page); 1631d68f735bSJaegeuk Kim else if (submitted) 16323f5f4959SChao Yu nwritten++; 1633e05df3b1SJaegeuk Kim 1634e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1635e05df3b1SJaegeuk Kim break; 1636e05df3b1SJaegeuk Kim } 1637e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1638e05df3b1SJaegeuk Kim cond_resched(); 1639e05df3b1SJaegeuk Kim 1640e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1641e05df3b1SJaegeuk Kim step = 2; 1642e05df3b1SJaegeuk Kim break; 1643e05df3b1SJaegeuk Kim } 1644e05df3b1SJaegeuk Kim } 1645e05df3b1SJaegeuk Kim 1646e05df3b1SJaegeuk Kim if (step < 2) { 1647e05df3b1SJaegeuk Kim step++; 1648e05df3b1SJaegeuk Kim goto next_step; 1649e05df3b1SJaegeuk Kim } 16503f5f4959SChao Yu out: 16513f5f4959SChao Yu if (nwritten) 1652b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 16533f5f4959SChao Yu return ret; 1654e05df3b1SJaegeuk Kim } 1655e05df3b1SJaegeuk Kim 1656cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1657cfe58f9dSJaegeuk Kim { 165880dd9c0eSChao Yu pgoff_t index = 0, end = ULONG_MAX; 1659cfe58f9dSJaegeuk Kim struct pagevec pvec; 1660280db3c8SMiklos Szeredi int ret2, ret = 0; 1661cfe58f9dSJaegeuk Kim 1662cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 16634ef51a8fSJaegeuk Kim 16644ef51a8fSJaegeuk Kim while (index <= end) { 16654ef51a8fSJaegeuk Kim int i, nr_pages; 16664ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1667cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 16684ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 16694ef51a8fSJaegeuk Kim if (nr_pages == 0) 16704ef51a8fSJaegeuk Kim break; 1671cfe58f9dSJaegeuk Kim 1672cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1673cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1674cfe58f9dSJaegeuk Kim 1675cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1676cfb271d4SChao Yu if (unlikely(page->index > end)) 1677cfe58f9dSJaegeuk Kim continue; 1678cfe58f9dSJaegeuk Kim 16794bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1680fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1681cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1682cfe58f9dSJaegeuk Kim ret = -EIO; 1683cfe58f9dSJaegeuk Kim } 16844bf08ff6SChao Yu } 1685cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1686cfe58f9dSJaegeuk Kim cond_resched(); 1687cfe58f9dSJaegeuk Kim } 1688cfe58f9dSJaegeuk Kim 1689280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1690cfe58f9dSJaegeuk Kim if (!ret) 1691cfe58f9dSJaegeuk Kim ret = ret2; 1692cfe58f9dSJaegeuk Kim return ret; 1693cfe58f9dSJaegeuk Kim } 1694cfe58f9dSJaegeuk Kim 1695e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1696e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1697e05df3b1SJaegeuk Kim { 16984081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 16999dfa1bafSJaegeuk Kim struct blk_plug plug; 170050c8cdb3SJaegeuk Kim long diff; 1701e05df3b1SJaegeuk Kim 17020771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 17030771fcc7SChao Yu goto skip_write; 17040771fcc7SChao Yu 17054660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 17064660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1707e05df3b1SJaegeuk Kim 1708a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 170987d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1710d3baf95dSJaegeuk Kim goto skip_write; 1711a7fdffbdSJaegeuk Kim 1712d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1713d31c7c3fSYunlei He 171450c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1715fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 17169dfa1bafSJaegeuk Kim blk_start_plug(&plug); 1717b0af6d49SChao Yu sync_node_pages(sbi, wbc, true, FS_NODE_IO); 17189dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 171950c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1720e05df3b1SJaegeuk Kim return 0; 1721d3baf95dSJaegeuk Kim 1722d3baf95dSJaegeuk Kim skip_write: 1723d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1724d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1725d3baf95dSJaegeuk Kim return 0; 1726e05df3b1SJaegeuk Kim } 1727e05df3b1SJaegeuk Kim 1728e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1729e05df3b1SJaegeuk Kim { 173026c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 173126c6b887SJaegeuk Kim 1732237c0790SJaegeuk Kim if (!PageUptodate(page)) 1733e05df3b1SJaegeuk Kim SetPageUptodate(page); 1734e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1735fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 17364081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1737e05df3b1SJaegeuk Kim SetPagePrivate(page); 17389e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1739e05df3b1SJaegeuk Kim return 1; 1740e05df3b1SJaegeuk Kim } 1741e05df3b1SJaegeuk Kim return 0; 1742e05df3b1SJaegeuk Kim } 1743e05df3b1SJaegeuk Kim 17440a8165d7SJaegeuk Kim /* 1745e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1746e05df3b1SJaegeuk Kim */ 1747e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1748e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1749e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1750e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1751487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1752487261f3SChao Yu .releasepage = f2fs_release_page, 17535b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 17545b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 17555b7a487cSWeichao Guo #endif 1756e05df3b1SJaegeuk Kim }; 1757e05df3b1SJaegeuk Kim 17588a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 17598a7ed66aSJaegeuk Kim nid_t n) 1760e05df3b1SJaegeuk Kim { 17618a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 17623aa770a9SNamjae Jeon } 1763e05df3b1SJaegeuk Kim 17649a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1765a0761f63SFan Li struct free_nid *i, enum nid_state state) 1766e05df3b1SJaegeuk Kim { 1767b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1768b8559dc2SChao Yu 1769eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1770eb0aa4b8SJaegeuk Kim if (err) 1771eb0aa4b8SJaegeuk Kim return err; 1772eb0aa4b8SJaegeuk Kim 17739a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 17749a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 17759a4ffdf5SChao Yu if (state == FREE_NID) 17769a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1777eb0aa4b8SJaegeuk Kim return 0; 1778b8559dc2SChao Yu } 1779b8559dc2SChao Yu 17809a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 1781a0761f63SFan Li struct free_nid *i, enum nid_state state) 1782b8559dc2SChao Yu { 1783b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1784b8559dc2SChao Yu 17859a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 17869a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 17879a4ffdf5SChao Yu if (state == FREE_NID) 1788e05df3b1SJaegeuk Kim list_del(&i->list); 17898a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1790e05df3b1SJaegeuk Kim } 1791e05df3b1SJaegeuk Kim 1792a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 1793a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 1794a0761f63SFan Li { 1795a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1796a0761f63SFan Li 1797a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 1798a0761f63SFan Li i->state = dst_state; 1799a0761f63SFan Li nm_i->nid_cnt[org_state]--; 1800a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 1801a0761f63SFan Li 1802a0761f63SFan Li switch (dst_state) { 1803a0761f63SFan Li case PREALLOC_NID: 1804a0761f63SFan Li list_del(&i->list); 1805a0761f63SFan Li break; 1806a0761f63SFan Li case FREE_NID: 1807a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 1808a0761f63SFan Li break; 1809a0761f63SFan Li default: 1810a0761f63SFan Li BUG_ON(1); 1811a0761f63SFan Li } 1812a0761f63SFan Li } 1813a0761f63SFan Li 18144ac91242SChao Yu /* return if the nid is recognized as free */ 18154ac91242SChao Yu static bool add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1816e05df3b1SJaegeuk Kim { 18176fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 181830a61ddfSChao Yu struct free_nid *i, *e; 181959bbd474SJaegeuk Kim struct nat_entry *ne; 182030a61ddfSChao Yu int err = -EINVAL; 182130a61ddfSChao Yu bool ret = false; 18229198acebSJaegeuk Kim 18239198acebSJaegeuk Kim /* 0 nid should not be used */ 1824cfb271d4SChao Yu if (unlikely(nid == 0)) 18254ac91242SChao Yu return false; 182659bbd474SJaegeuk Kim 18277bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1828e05df3b1SJaegeuk Kim i->nid = nid; 18299a4ffdf5SChao Yu i->state = FREE_NID; 1830e05df3b1SJaegeuk Kim 183130a61ddfSChao Yu if (radix_tree_preload(GFP_NOFS)) 183230a61ddfSChao Yu goto err; 1833769ec6e5SJaegeuk Kim 1834b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 183530a61ddfSChao Yu 183630a61ddfSChao Yu if (build) { 183730a61ddfSChao Yu /* 183830a61ddfSChao Yu * Thread A Thread B 183930a61ddfSChao Yu * - f2fs_create 184030a61ddfSChao Yu * - f2fs_new_inode 184130a61ddfSChao Yu * - alloc_nid 18429a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 184330a61ddfSChao Yu * - f2fs_balance_fs_bg 184430a61ddfSChao Yu * - build_free_nids 184530a61ddfSChao Yu * - __build_free_nids 184630a61ddfSChao Yu * - scan_nat_page 184730a61ddfSChao Yu * - add_free_nid 184830a61ddfSChao Yu * - __lookup_nat_cache 184930a61ddfSChao Yu * - f2fs_add_link 185030a61ddfSChao Yu * - init_inode_metadata 185130a61ddfSChao Yu * - new_inode_page 185230a61ddfSChao Yu * - new_node_page 185330a61ddfSChao Yu * - set_node_addr 185430a61ddfSChao Yu * - alloc_nid_done 18559a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 18569a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 185730a61ddfSChao Yu */ 185830a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 185930a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 186030a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 186130a61ddfSChao Yu goto err_out; 186230a61ddfSChao Yu 186330a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 186430a61ddfSChao Yu if (e) { 18659a4ffdf5SChao Yu if (e->state == FREE_NID) 186630a61ddfSChao Yu ret = true; 186730a61ddfSChao Yu goto err_out; 186830a61ddfSChao Yu } 186930a61ddfSChao Yu } 187030a61ddfSChao Yu ret = true; 1871a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 187230a61ddfSChao Yu err_out: 1873b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1874769ec6e5SJaegeuk Kim radix_tree_preload_end(); 187530a61ddfSChao Yu err: 187630a61ddfSChao Yu if (err) 1877e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 187830a61ddfSChao Yu return ret; 1879e05df3b1SJaegeuk Kim } 1880e05df3b1SJaegeuk Kim 1881b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 1882e05df3b1SJaegeuk Kim { 1883b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1884e05df3b1SJaegeuk Kim struct free_nid *i; 1885cf0ee0f0SChao Yu bool need_free = false; 1886cf0ee0f0SChao Yu 1887b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 18888a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 18899a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 1890a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 1891cf0ee0f0SChao Yu need_free = true; 1892e05df3b1SJaegeuk Kim } 1893b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1894cf0ee0f0SChao Yu 1895cf0ee0f0SChao Yu if (need_free) 1896cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1897e05df3b1SJaegeuk Kim } 1898e05df3b1SJaegeuk Kim 18999f7e4a2cSJaegeuk Kim static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 1900346fe752SChao Yu bool set, bool build) 19014ac91242SChao Yu { 19024ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 19034ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 19044ac91242SChao Yu unsigned int nid_ofs = nid - START_NID(nid); 19054ac91242SChao Yu 19064ac91242SChao Yu if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 19074ac91242SChao Yu return; 19084ac91242SChao Yu 19094ac91242SChao Yu if (set) 191023380b85SJaegeuk Kim __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 19114ac91242SChao Yu else 191223380b85SJaegeuk Kim __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 1913586d1492SChao Yu 1914586d1492SChao Yu if (set) 1915586d1492SChao Yu nm_i->free_nid_count[nat_ofs]++; 1916586d1492SChao Yu else if (!build) 1917586d1492SChao Yu nm_i->free_nid_count[nat_ofs]--; 19184ac91242SChao Yu } 19194ac91242SChao Yu 19206fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1921e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1922e05df3b1SJaegeuk Kim { 19236fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1924e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1925e05df3b1SJaegeuk Kim block_t blk_addr; 19264ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 1927e05df3b1SJaegeuk Kim int i; 1928e05df3b1SJaegeuk Kim 1929586d1492SChao Yu if (test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 1930586d1492SChao Yu return; 1931586d1492SChao Yu 193223380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 19334ac91242SChao Yu 1934e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1935e05df3b1SJaegeuk Kim 1936e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 19374ac91242SChao Yu bool freed = false; 193823d38844SHaicheng Li 1939cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 194004431c44SJaegeuk Kim break; 194123d38844SHaicheng Li 1942e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 19439850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 19443a2ad567SChao Yu if (blk_addr == NULL_ADDR) 19454ac91242SChao Yu freed = add_free_nid(sbi, start_nid, true); 1946346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 1947346fe752SChao Yu update_free_nid_bitmap(sbi, start_nid, freed, true); 1948346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 1949e05df3b1SJaegeuk Kim } 1950e05df3b1SJaegeuk Kim } 1951e05df3b1SJaegeuk Kim 19524ac91242SChao Yu static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 19534ac91242SChao Yu { 19544ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 19554ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 19564ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 19574ac91242SChao Yu unsigned int i, idx; 19584ac91242SChao Yu 19594ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 19604ac91242SChao Yu 19614ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 19624ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 19634ac91242SChao Yu continue; 1964586d1492SChao Yu if (!nm_i->free_nid_count[i]) 1965586d1492SChao Yu continue; 19664ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 19674ac91242SChao Yu nid_t nid; 19684ac91242SChao Yu 19694ac91242SChao Yu if (!test_bit_le(idx, nm_i->free_nid_bitmap[i])) 19704ac91242SChao Yu continue; 19714ac91242SChao Yu 19724ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 19734ac91242SChao Yu add_free_nid(sbi, nid, true); 19744ac91242SChao Yu 19759a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 19764ac91242SChao Yu goto out; 19774ac91242SChao Yu } 19784ac91242SChao Yu } 19794ac91242SChao Yu out: 19804ac91242SChao Yu down_read(&curseg->journal_rwsem); 19814ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 19824ac91242SChao Yu block_t addr; 19834ac91242SChao Yu nid_t nid; 19844ac91242SChao Yu 19854ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 19864ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 19874ac91242SChao Yu if (addr == NULL_ADDR) 19884ac91242SChao Yu add_free_nid(sbi, nid, true); 19894ac91242SChao Yu else 19904ac91242SChao Yu remove_free_nid(sbi, nid); 19914ac91242SChao Yu } 19924ac91242SChao Yu up_read(&curseg->journal_rwsem); 19934ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 19944ac91242SChao Yu } 19954ac91242SChao Yu 199622ad0b6aSJaegeuk Kim static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 1997e05df3b1SJaegeuk Kim { 1998e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1999e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2000b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 20018760952dSHaicheng Li int i = 0; 200255008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2003e05df3b1SJaegeuk Kim 2004e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2005e9cdd307SYunlei He nid = 0; 2006e9cdd307SYunlei He 200755008d84SJaegeuk Kim /* Enough entries */ 20089a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 200955008d84SJaegeuk Kim return; 2010e05df3b1SJaegeuk Kim 20113a2ad567SChao Yu if (!sync && !available_free_memory(sbi, FREE_NIDS)) 2012e05df3b1SJaegeuk Kim return; 2013e05df3b1SJaegeuk Kim 20144ac91242SChao Yu if (!mount) { 20154ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 20164ac91242SChao Yu scan_free_nid_bits(sbi); 20174ac91242SChao Yu 201874986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 201922ad0b6aSJaegeuk Kim return; 202022ad0b6aSJaegeuk Kim } 202122ad0b6aSJaegeuk Kim 202255008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 202326879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 202426879fb1SChao Yu META_NAT, true); 2025e05df3b1SJaegeuk Kim 2026b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2027a5131193SJaegeuk Kim 2028e05df3b1SJaegeuk Kim while (1) { 2029e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2030e05df3b1SJaegeuk Kim 20316fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 2032e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2033e05df3b1SJaegeuk Kim 2034e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2035cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2036e05df3b1SJaegeuk Kim nid = 0; 203755008d84SJaegeuk Kim 2038a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2039e05df3b1SJaegeuk Kim break; 2040e05df3b1SJaegeuk Kim } 2041e05df3b1SJaegeuk Kim 204255008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 204355008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2044e05df3b1SJaegeuk Kim 2045e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 2046b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 2047dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2048dfc08a12SChao Yu block_t addr; 2049dfc08a12SChao Yu 2050dfc08a12SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 2051dfc08a12SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 2052e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 20536fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 2054e05df3b1SJaegeuk Kim else 2055b8559dc2SChao Yu remove_free_nid(sbi, nid); 2056e05df3b1SJaegeuk Kim } 2057b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 2058b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 20592db2388fSChao Yu 20602db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2061ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2062e05df3b1SJaegeuk Kim } 2063e05df3b1SJaegeuk Kim 206422ad0b6aSJaegeuk Kim void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 20652411cf5bSChao Yu { 20662411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 206722ad0b6aSJaegeuk Kim __build_free_nids(sbi, sync, mount); 20682411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 20692411cf5bSChao Yu } 20702411cf5bSChao Yu 2071e05df3b1SJaegeuk Kim /* 2072e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2073e05df3b1SJaegeuk Kim * from second parameter of this function. 2074e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2075e05df3b1SJaegeuk Kim */ 2076e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2077e05df3b1SJaegeuk Kim { 2078e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2079e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2080e05df3b1SJaegeuk Kim retry: 2081cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 208255523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 208355523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2084cb78942bSJaegeuk Kim return false; 208555523519SChao Yu } 2086cb78942bSJaegeuk Kim #endif 2087b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2088e05df3b1SJaegeuk Kim 208904d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 209004d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 209104d47e67SChao Yu return false; 209204d47e67SChao Yu } 2093e05df3b1SJaegeuk Kim 209455008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 20959a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_build_free_nids(nm_i)) { 20969a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 20979a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2098b8559dc2SChao Yu struct free_nid, list); 2099e05df3b1SJaegeuk Kim *nid = i->nid; 2100b8559dc2SChao Yu 2101a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 210204d47e67SChao Yu nm_i->available_nids--; 21034ac91242SChao Yu 2104346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 21054ac91242SChao Yu 2106b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2107e05df3b1SJaegeuk Kim return true; 2108e05df3b1SJaegeuk Kim } 2109b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 211055008d84SJaegeuk Kim 211155008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 211222ad0b6aSJaegeuk Kim build_free_nids(sbi, true, false); 211355008d84SJaegeuk Kim goto retry; 211455008d84SJaegeuk Kim } 2115e05df3b1SJaegeuk Kim 21160a8165d7SJaegeuk Kim /* 2117e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2118e05df3b1SJaegeuk Kim */ 2119e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2120e05df3b1SJaegeuk Kim { 2121e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2122e05df3b1SJaegeuk Kim struct free_nid *i; 2123e05df3b1SJaegeuk Kim 2124b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21258a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2126b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2127a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2128b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2129cf0ee0f0SChao Yu 2130cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2131e05df3b1SJaegeuk Kim } 2132e05df3b1SJaegeuk Kim 21330a8165d7SJaegeuk Kim /* 2134e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2135e05df3b1SJaegeuk Kim */ 2136e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2137e05df3b1SJaegeuk Kim { 213849952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 213949952fa1SJaegeuk Kim struct free_nid *i; 2140cf0ee0f0SChao Yu bool need_free = false; 214149952fa1SJaegeuk Kim 214265985d93SJaegeuk Kim if (!nid) 214365985d93SJaegeuk Kim return; 214465985d93SJaegeuk Kim 2145b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21468a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2147b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2148b8559dc2SChao Yu 21496fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 2150a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2151cf0ee0f0SChao Yu need_free = true; 215295630cbaSHaicheng Li } else { 2153a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 215495630cbaSHaicheng Li } 215504d47e67SChao Yu 215604d47e67SChao Yu nm_i->available_nids++; 215704d47e67SChao Yu 2158346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 21594ac91242SChao Yu 2160b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2161cf0ee0f0SChao Yu 2162cf0ee0f0SChao Yu if (need_free) 2163cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2164e05df3b1SJaegeuk Kim } 2165e05df3b1SJaegeuk Kim 216631696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 216731696580SChao Yu { 216831696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 216931696580SChao Yu struct free_nid *i, *next; 217031696580SChao Yu int nr = nr_shrink; 217131696580SChao Yu 21729a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2173ad4edb83SJaegeuk Kim return 0; 2174ad4edb83SJaegeuk Kim 217531696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 217631696580SChao Yu return 0; 217731696580SChao Yu 2178b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21799a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2180b8559dc2SChao Yu if (nr_shrink <= 0 || 21819a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 218231696580SChao Yu break; 2183b8559dc2SChao Yu 2184a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 218531696580SChao Yu kmem_cache_free(free_nid_slab, i); 218631696580SChao Yu nr_shrink--; 218731696580SChao Yu } 2188b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 218931696580SChao Yu mutex_unlock(&nm_i->build_lock); 219031696580SChao Yu 219131696580SChao Yu return nr - nr_shrink; 219231696580SChao Yu } 219331696580SChao Yu 219470cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 219528cdce04SChao Yu { 219628cdce04SChao Yu void *src_addr, *dst_addr; 219728cdce04SChao Yu size_t inline_size; 219828cdce04SChao Yu struct page *ipage; 219928cdce04SChao Yu struct f2fs_inode *ri; 220028cdce04SChao Yu 22014081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 22029850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 220328cdce04SChao Yu 2204e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 2205e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 220691942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2207e3b4d43fSJaegeuk Kim goto update_inode; 2208e3b4d43fSJaegeuk Kim } 2209e3b4d43fSJaegeuk Kim 22106afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 22116afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 221228cdce04SChao Yu inline_size = inline_xattr_size(inode); 221328cdce04SChao Yu 2214fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 221528cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2216e3b4d43fSJaegeuk Kim update_inode: 221728cdce04SChao Yu update_inode(inode, ipage); 221828cdce04SChao Yu f2fs_put_page(ipage, 1); 221928cdce04SChao Yu } 222028cdce04SChao Yu 2221d260081cSChao Yu int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 2222abb2366cSJaegeuk Kim { 22234081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2224abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 222587905682SYunlei He nid_t new_xnid; 222687905682SYunlei He struct dnode_of_data dn; 2227abb2366cSJaegeuk Kim struct node_info ni; 2228d260081cSChao Yu struct page *xpage; 2229abb2366cSJaegeuk Kim 2230abb2366cSJaegeuk Kim if (!prev_xnid) 2231abb2366cSJaegeuk Kim goto recover_xnid; 2232abb2366cSJaegeuk Kim 2233d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2234abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 22359850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 2236abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 2237000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2238479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2239abb2366cSJaegeuk Kim 2240abb2366cSJaegeuk Kim recover_xnid: 2241d260081cSChao Yu /* 2: update xattr nid in inode */ 224287905682SYunlei He if (!alloc_nid(sbi, &new_xnid)) 224387905682SYunlei He return -ENOSPC; 224487905682SYunlei He 224587905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 224687905682SYunlei He xpage = new_node_page(&dn, XATTR_NODE_OFFSET); 224787905682SYunlei He if (IS_ERR(xpage)) { 224887905682SYunlei He alloc_nid_failed(sbi, new_xnid); 224987905682SYunlei He return PTR_ERR(xpage); 225087905682SYunlei He } 225187905682SYunlei He 225287905682SYunlei He alloc_nid_done(sbi, new_xnid); 2253d260081cSChao Yu update_inode_page(inode); 2254abb2366cSJaegeuk Kim 2255d260081cSChao Yu /* 3: update and set xattr node page dirty */ 225687905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2257d260081cSChao Yu 2258d260081cSChao Yu set_page_dirty(xpage); 2259d260081cSChao Yu f2fs_put_page(xpage, 1); 2260abb2366cSJaegeuk Kim 2261d260081cSChao Yu return 0; 2262abb2366cSJaegeuk Kim } 2263abb2366cSJaegeuk Kim 2264e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2265e05df3b1SJaegeuk Kim { 226658bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2267e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2268e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2269e05df3b1SJaegeuk Kim struct page *ipage; 2270e05df3b1SJaegeuk Kim 2271e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2272e8271fa3SJaegeuk Kim 2273e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2274e8271fa3SJaegeuk Kim return -EINVAL; 2275e8ea9b3dSJaegeuk Kim retry: 2276300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2277e8ea9b3dSJaegeuk Kim if (!ipage) { 2278e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2279e8ea9b3dSJaegeuk Kim goto retry; 2280e8ea9b3dSJaegeuk Kim } 2281e05df3b1SJaegeuk Kim 2282e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2283b8559dc2SChao Yu remove_free_nid(sbi, ino); 2284e05df3b1SJaegeuk Kim 2285237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2286e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2287e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2288e05df3b1SJaegeuk Kim 228958bfaf44SJaegeuk Kim src = F2FS_INODE(page); 229058bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2291e05df3b1SJaegeuk Kim 229258bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 229358bfaf44SJaegeuk Kim dst->i_size = 0; 229458bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 229558bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 229658bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 22977a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 22985c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 22997a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 23006afc662eSChao Yu 23016afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 23026afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23036afc662eSChao Yu i_inline_xattr_size)) 23046afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 23056afc662eSChao Yu 23065c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 23075c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23085c57132eSChao Yu i_projid)) 23095c57132eSChao Yu dst->i_projid = src->i_projid; 23105c57132eSChao Yu } 2311e05df3b1SJaegeuk Kim 2312e05df3b1SJaegeuk Kim new_ni = old_ni; 2313e05df3b1SJaegeuk Kim new_ni.ino = ino; 2314e05df3b1SJaegeuk Kim 23150abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 231665e5cd0aSJaegeuk Kim WARN_ON(1); 2317479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2318e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2319617deb8cSJaegeuk Kim set_page_dirty(ipage); 2320e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2321e05df3b1SJaegeuk Kim return 0; 2322e05df3b1SJaegeuk Kim } 2323e05df3b1SJaegeuk Kim 2324e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 2325e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2326e05df3b1SJaegeuk Kim { 2327e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2328e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2329e05df3b1SJaegeuk Kim block_t addr; 23309ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2331e05df3b1SJaegeuk Kim 2332e05df3b1SJaegeuk Kim /* scan the node segment */ 2333e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2334e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2335e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2336e05df3b1SJaegeuk Kim 23379ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2338664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2339393ff91fSJaegeuk Kim 23409af0ff1cSChao Yu /* readahead node pages */ 234126879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 23429af0ff1cSChao Yu 23439ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 23442b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2345393ff91fSJaegeuk Kim 23469ecf4b80SChao Yu rn = F2FS_NODE(page); 2347393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2348393ff91fSJaegeuk Kim sum_entry->version = 0; 2349393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 23509af0ff1cSChao Yu sum_entry++; 23519ecf4b80SChao Yu f2fs_put_page(page, 1); 23529af0ff1cSChao Yu } 2353bac4eef6SChao Yu 23549ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2355bac4eef6SChao Yu addr + nrpages); 23569af0ff1cSChao Yu } 23579ecf4b80SChao Yu return 0; 2358e05df3b1SJaegeuk Kim } 2359e05df3b1SJaegeuk Kim 2360aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2361e05df3b1SJaegeuk Kim { 2362e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2363e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2364b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2365e05df3b1SJaegeuk Kim int i; 2366e05df3b1SJaegeuk Kim 2367b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2368dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2369e05df3b1SJaegeuk Kim struct nat_entry *ne; 2370e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2371dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2372e05df3b1SJaegeuk Kim 2373dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 23749be32d72SJaegeuk Kim 2375e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2376e05df3b1SJaegeuk Kim if (!ne) { 23775c9e4184SChao Yu ne = grab_nat_entry(nm_i, nid, true); 237894dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 23799be32d72SJaegeuk Kim } 238004d47e67SChao Yu 238104d47e67SChao Yu /* 238204d47e67SChao Yu * if a free nat in journal has not been used after last 238304d47e67SChao Yu * checkpoint, we should remove it from available nids, 238404d47e67SChao Yu * since later we will add it again. 238504d47e67SChao Yu */ 238604d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 238704d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 238804d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 238904d47e67SChao Yu nm_i->available_nids--; 239004d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 239104d47e67SChao Yu } 239204d47e67SChao Yu 2393e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2394e05df3b1SJaegeuk Kim } 2395dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2396b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2397e05df3b1SJaegeuk Kim } 2398e05df3b1SJaegeuk Kim 2399309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2400309cc2b6SJaegeuk Kim struct list_head *head, int max) 2401e05df3b1SJaegeuk Kim { 2402309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2403e05df3b1SJaegeuk Kim 2404309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2405309cc2b6SJaegeuk Kim goto add_out; 2406e05df3b1SJaegeuk Kim 2407309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2408309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2409309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2410309cc2b6SJaegeuk Kim return; 2411309cc2b6SJaegeuk Kim } 2412309cc2b6SJaegeuk Kim } 2413309cc2b6SJaegeuk Kim add_out: 2414309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2415aec71382SChao Yu } 2416aec71382SChao Yu 24179f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 241822ad0b6aSJaegeuk Kim struct page *page) 241922ad0b6aSJaegeuk Kim { 242022ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 242122ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 242222ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 242322ad0b6aSJaegeuk Kim int valid = 0; 242437a0ab2aSFan Li int i = 0; 242522ad0b6aSJaegeuk Kim 242622ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 242722ad0b6aSJaegeuk Kim return; 242822ad0b6aSJaegeuk Kim 242937a0ab2aSFan Li if (nat_index == 0) { 243037a0ab2aSFan Li valid = 1; 243137a0ab2aSFan Li i = 1; 243237a0ab2aSFan Li } 243337a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 243437a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 243522ad0b6aSJaegeuk Kim valid++; 243622ad0b6aSJaegeuk Kim } 243722ad0b6aSJaegeuk Kim if (valid == 0) { 243823380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 243923380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 244022ad0b6aSJaegeuk Kim return; 244122ad0b6aSJaegeuk Kim } 244222ad0b6aSJaegeuk Kim 244323380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 244422ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 244523380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 244622ad0b6aSJaegeuk Kim else 244723380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 244822ad0b6aSJaegeuk Kim } 244922ad0b6aSJaegeuk Kim 2450309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 245122ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2452309cc2b6SJaegeuk Kim { 2453309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2454b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2455309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2456309cc2b6SJaegeuk Kim bool to_journal = true; 2457309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2458309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2459309cc2b6SJaegeuk Kim struct page *page = NULL; 2460aec71382SChao Yu 2461aec71382SChao Yu /* 2462aec71382SChao Yu * there are two steps to flush nat entries: 2463aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2464aec71382SChao Yu * #2, flush nat entries to nat page. 2465aec71382SChao Yu */ 246622ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 246722ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2468aec71382SChao Yu to_journal = false; 2469aec71382SChao Yu 2470aec71382SChao Yu if (to_journal) { 2471b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2472aec71382SChao Yu } else { 2473e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2474e05df3b1SJaegeuk Kim nat_blk = page_address(page); 24759850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2476e05df3b1SJaegeuk Kim } 2477e05df3b1SJaegeuk Kim 2478aec71382SChao Yu /* flush dirty nats in nat entry set */ 2479309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2480aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2481aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2482aec71382SChao Yu int offset; 2483aec71382SChao Yu 2484febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2485309cc2b6SJaegeuk Kim 2486aec71382SChao Yu if (to_journal) { 2487dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2488aec71382SChao Yu NAT_JOURNAL, nid, 1); 24899850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2490dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2491dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2492aec71382SChao Yu } else { 2493aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2494aec71382SChao Yu } 2495aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 249688bd02c9SJaegeuk Kim nat_reset_flag(ne); 24970b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 249804d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 2499309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 250004d47e67SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 250104d47e67SChao Yu NM_I(sbi)->available_nids++; 2502346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 25034ac91242SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 25044ac91242SChao Yu } else { 25054ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2506346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 250704d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 250804d47e67SChao Yu } 2509e05df3b1SJaegeuk Kim } 2510aec71382SChao Yu 251122ad0b6aSJaegeuk Kim if (to_journal) { 2512b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 251322ad0b6aSJaegeuk Kim } else { 251422ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2515e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 251622ad0b6aSJaegeuk Kim } 2517aec71382SChao Yu 251859c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 251959c9081bSYunlei He if (!set->entry_cnt) { 2520309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2521309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2522309cc2b6SJaegeuk Kim } 252359c9081bSYunlei He } 2524aec71382SChao Yu 2525309cc2b6SJaegeuk Kim /* 2526309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2527309cc2b6SJaegeuk Kim */ 252822ad0b6aSJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2529309cc2b6SJaegeuk Kim { 2530309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2531309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2532b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 25337aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2534309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2535309cc2b6SJaegeuk Kim unsigned int found; 2536309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2537309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2538309cc2b6SJaegeuk Kim 253920d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 254020d047c8SChangman Lee return; 2541a5131193SJaegeuk Kim 2542b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2543a5131193SJaegeuk Kim 2544309cc2b6SJaegeuk Kim /* 2545309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2546309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2547309cc2b6SJaegeuk Kim * into nat entry set. 2548309cc2b6SJaegeuk Kim */ 2549900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 255022ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2551309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2552309cc2b6SJaegeuk Kim 2553309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 25547aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2555309cc2b6SJaegeuk Kim unsigned idx; 2556309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2557309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2558309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2559dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2560309cc2b6SJaegeuk Kim } 2561309cc2b6SJaegeuk Kim 2562309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2563309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 256422ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2565309cc2b6SJaegeuk Kim 2566b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 256759c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2568e05df3b1SJaegeuk Kim } 2569e05df3b1SJaegeuk Kim 257022ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 257122ad0b6aSJaegeuk Kim { 257222ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 257322ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 257422ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 257522ad0b6aSJaegeuk Kim unsigned int i; 257622ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 257722ad0b6aSJaegeuk Kim block_t nat_bits_addr; 257822ad0b6aSJaegeuk Kim 257922ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 258022ad0b6aSJaegeuk Kim return 0; 258122ad0b6aSJaegeuk Kim 258222ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + 258322ad0b6aSJaegeuk Kim F2FS_BLKSIZE - 1); 258422ad0b6aSJaegeuk Kim nm_i->nat_bits = kzalloc(nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, 258522ad0b6aSJaegeuk Kim GFP_KERNEL); 258622ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 258722ad0b6aSJaegeuk Kim return -ENOMEM; 258822ad0b6aSJaegeuk Kim 258922ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 259022ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 259122ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 259222ad0b6aSJaegeuk Kim struct page *page = get_meta_page(sbi, nat_bits_addr++); 259322ad0b6aSJaegeuk Kim 259422ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 259522ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 259622ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 259722ad0b6aSJaegeuk Kim } 259822ad0b6aSJaegeuk Kim 2599ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 260022ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 260122ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 260222ad0b6aSJaegeuk Kim return 0; 260322ad0b6aSJaegeuk Kim } 260422ad0b6aSJaegeuk Kim 260522ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 260622ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 260722ad0b6aSJaegeuk Kim 260822ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 260922ad0b6aSJaegeuk Kim return 0; 261022ad0b6aSJaegeuk Kim } 261122ad0b6aSJaegeuk Kim 2612bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 26137041d5d2SChao Yu { 26147041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 26157041d5d2SChao Yu unsigned int i = 0; 26167041d5d2SChao Yu nid_t nid, last_nid; 26177041d5d2SChao Yu 26187041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 26197041d5d2SChao Yu return; 26207041d5d2SChao Yu 26217041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26227041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 26237041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26247041d5d2SChao Yu break; 26257041d5d2SChao Yu 26267041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26277041d5d2SChao Yu 26287041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2629f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 26307041d5d2SChao Yu 2631346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 26327041d5d2SChao Yu for (; nid < last_nid; nid++) 2633346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2634346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 26357041d5d2SChao Yu } 26367041d5d2SChao Yu 26377041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26387041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 26397041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26407041d5d2SChao Yu break; 26417041d5d2SChao Yu 26427041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26437041d5d2SChao Yu } 26447041d5d2SChao Yu } 26457041d5d2SChao Yu 2646e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2647e05df3b1SJaegeuk Kim { 2648e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2649e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2650e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 265122ad0b6aSJaegeuk Kim unsigned int nat_segs; 265222ad0b6aSJaegeuk Kim int err; 2653e05df3b1SJaegeuk Kim 2654e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2655e05df3b1SJaegeuk Kim 2656e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2657e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 265822ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 265922ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 26607ee0eeabSJaegeuk Kim 2661b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 266204d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 266304d47e67SChao Yu F2FS_RESERVED_NODE_NUM; 26649a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 26659a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2666e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2667cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2668ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 26692304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2670e05df3b1SJaegeuk Kim 26718a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 26729a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2673769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2674769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2675e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2676e05df3b1SJaegeuk Kim 2677e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2678b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2679b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2680e05df3b1SJaegeuk Kim 2681e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 268279b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2683e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2684e05df3b1SJaegeuk Kim if (!version_bitmap) 2685e05df3b1SJaegeuk Kim return -EFAULT; 2686e05df3b1SJaegeuk Kim 268779b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 268879b5793bSAlexandru Gheorghiu GFP_KERNEL); 268979b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 269079b5793bSAlexandru Gheorghiu return -ENOMEM; 2691599a09b2SChao Yu 269222ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 269322ad0b6aSJaegeuk Kim if (err) 269422ad0b6aSJaegeuk Kim return err; 269522ad0b6aSJaegeuk Kim 2696599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2697599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2698599a09b2SChao Yu GFP_KERNEL); 2699599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2700599a09b2SChao Yu return -ENOMEM; 2701599a09b2SChao Yu #endif 2702599a09b2SChao Yu 2703e05df3b1SJaegeuk Kim return 0; 2704e05df3b1SJaegeuk Kim } 2705e05df3b1SJaegeuk Kim 27069f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 27074ac91242SChao Yu { 27084ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 27094ac91242SChao Yu 2710a7c3e901SMichal Hocko nm_i->free_nid_bitmap = kvzalloc(nm_i->nat_blocks * 27114ac91242SChao Yu NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL); 27124ac91242SChao Yu if (!nm_i->free_nid_bitmap) 27134ac91242SChao Yu return -ENOMEM; 27144ac91242SChao Yu 2715a7c3e901SMichal Hocko nm_i->nat_block_bitmap = kvzalloc(nm_i->nat_blocks / 8, 27164ac91242SChao Yu GFP_KERNEL); 27174ac91242SChao Yu if (!nm_i->nat_block_bitmap) 27184ac91242SChao Yu return -ENOMEM; 2719586d1492SChao Yu 2720a7c3e901SMichal Hocko nm_i->free_nid_count = kvzalloc(nm_i->nat_blocks * 2721586d1492SChao Yu sizeof(unsigned short), GFP_KERNEL); 2722586d1492SChao Yu if (!nm_i->free_nid_count) 2723586d1492SChao Yu return -ENOMEM; 27244ac91242SChao Yu return 0; 27254ac91242SChao Yu } 27264ac91242SChao Yu 2727e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2728e05df3b1SJaegeuk Kim { 2729e05df3b1SJaegeuk Kim int err; 2730e05df3b1SJaegeuk Kim 2731e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2732e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2733e05df3b1SJaegeuk Kim return -ENOMEM; 2734e05df3b1SJaegeuk Kim 2735e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2736e05df3b1SJaegeuk Kim if (err) 2737e05df3b1SJaegeuk Kim return err; 2738e05df3b1SJaegeuk Kim 27394ac91242SChao Yu err = init_free_nid_cache(sbi); 27404ac91242SChao Yu if (err) 27414ac91242SChao Yu return err; 27424ac91242SChao Yu 27437041d5d2SChao Yu /* load free nid status from nat_bits table */ 27447041d5d2SChao Yu load_free_nid_bitmap(sbi); 27457041d5d2SChao Yu 274622ad0b6aSJaegeuk Kim build_free_nids(sbi, true, true); 2747e05df3b1SJaegeuk Kim return 0; 2748e05df3b1SJaegeuk Kim } 2749e05df3b1SJaegeuk Kim 2750e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2751e05df3b1SJaegeuk Kim { 2752e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2753e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2754e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 27557aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2756e05df3b1SJaegeuk Kim nid_t nid = 0; 2757e05df3b1SJaegeuk Kim unsigned int found; 2758e05df3b1SJaegeuk Kim 2759e05df3b1SJaegeuk Kim if (!nm_i) 2760e05df3b1SJaegeuk Kim return; 2761e05df3b1SJaegeuk Kim 2762e05df3b1SJaegeuk Kim /* destroy free nid list */ 2763b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 27649a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 2765a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2766b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2767cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2768b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2769e05df3b1SJaegeuk Kim } 27709a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 27719a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 27729a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 2773b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2774e05df3b1SJaegeuk Kim 2775e05df3b1SJaegeuk Kim /* destroy nat cache */ 2776b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2777e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2778e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2779e05df3b1SJaegeuk Kim unsigned idx; 27807aed0d45SJaegeuk Kim 2781b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2782b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2783b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2784e05df3b1SJaegeuk Kim } 27859850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 27867aed0d45SJaegeuk Kim 27877aed0d45SJaegeuk Kim /* destroy nat set cache */ 27887aed0d45SJaegeuk Kim nid = 0; 27897aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 27907aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 27917aed0d45SJaegeuk Kim unsigned idx; 27927aed0d45SJaegeuk Kim 27937aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 27947aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 27957aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 27967aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 27977aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 27987aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 27997aed0d45SJaegeuk Kim } 28007aed0d45SJaegeuk Kim } 2801b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2802e05df3b1SJaegeuk Kim 28034ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 28044ac91242SChao Yu kvfree(nm_i->free_nid_bitmap); 2805586d1492SChao Yu kvfree(nm_i->free_nid_count); 28064ac91242SChao Yu 2807e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 280822ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2809599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2810599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2811599a09b2SChao Yu #endif 2812e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2813e05df3b1SJaegeuk Kim kfree(nm_i); 2814e05df3b1SJaegeuk Kim } 2815e05df3b1SJaegeuk Kim 28166e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2817e05df3b1SJaegeuk Kim { 2818e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2819e8512d2eSGu Zheng sizeof(struct nat_entry)); 2820e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2821aec71382SChao Yu goto fail; 2822e05df3b1SJaegeuk Kim 2823e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2824e8512d2eSGu Zheng sizeof(struct free_nid)); 2825aec71382SChao Yu if (!free_nid_slab) 2826ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2827aec71382SChao Yu 2828aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2829aec71382SChao Yu sizeof(struct nat_entry_set)); 2830aec71382SChao Yu if (!nat_entry_set_slab) 2831ce3e6d25SMarkus Elfring goto destroy_free_nid; 2832e05df3b1SJaegeuk Kim return 0; 2833aec71382SChao Yu 2834ce3e6d25SMarkus Elfring destroy_free_nid: 2835aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2836ce3e6d25SMarkus Elfring destroy_nat_entry: 2837aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2838aec71382SChao Yu fail: 2839aec71382SChao Yu return -ENOMEM; 2840e05df3b1SJaegeuk Kim } 2841e05df3b1SJaegeuk Kim 2842e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2843e05df3b1SJaegeuk Kim { 2844aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2845e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2846e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2847e05df3b1SJaegeuk Kim } 2848