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) { 49b8559dc2SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID_LIST] * 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 66e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; 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); 771e84371fSJaegeuk Kim } else { 781663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 791663cae4SJaegeuk Kim return true; 806fb03f3aSJaegeuk Kim } 816fb03f3aSJaegeuk Kim return res; 82cdfc41c1SJaegeuk Kim } 83cdfc41c1SJaegeuk Kim 84e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 85e05df3b1SJaegeuk Kim { 86e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 87e05df3b1SJaegeuk Kim unsigned int long flags; 88e05df3b1SJaegeuk Kim 89e05df3b1SJaegeuk Kim if (PageDirty(page)) { 90e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 91e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 92e05df3b1SJaegeuk Kim page_index(page), 93e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 94e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 95e05df3b1SJaegeuk Kim 96e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 974081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 98e05df3b1SJaegeuk Kim } 99e05df3b1SJaegeuk Kim ClearPageUptodate(page); 100e05df3b1SJaegeuk Kim } 101e05df3b1SJaegeuk Kim 102e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 103e05df3b1SJaegeuk Kim { 104e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 105e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 106e05df3b1SJaegeuk Kim } 107e05df3b1SJaegeuk Kim 108e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 109e05df3b1SJaegeuk Kim { 110e05df3b1SJaegeuk Kim struct page *src_page; 111e05df3b1SJaegeuk Kim struct page *dst_page; 112e05df3b1SJaegeuk Kim pgoff_t src_off; 113e05df3b1SJaegeuk Kim pgoff_t dst_off; 114e05df3b1SJaegeuk Kim void *src_addr; 115e05df3b1SJaegeuk Kim void *dst_addr; 116e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 117e05df3b1SJaegeuk Kim 118e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 119e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 120e05df3b1SJaegeuk Kim 121e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 122e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 123e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1249850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 125e05df3b1SJaegeuk Kim 126e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 127e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 12809cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 129e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 130e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 131e05df3b1SJaegeuk Kim 132e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 133e05df3b1SJaegeuk Kim 134e05df3b1SJaegeuk Kim return dst_page; 135e05df3b1SJaegeuk Kim } 136e05df3b1SJaegeuk Kim 137e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 138e05df3b1SJaegeuk Kim { 139e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 140e05df3b1SJaegeuk Kim } 141e05df3b1SJaegeuk Kim 142e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 143e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 144e05df3b1SJaegeuk Kim { 145e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 146e05df3b1SJaegeuk Kim } 147e05df3b1SJaegeuk Kim 148e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 149e05df3b1SJaegeuk Kim { 150e05df3b1SJaegeuk Kim list_del(&e->list); 151e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 152e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 153e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 154e05df3b1SJaegeuk Kim } 155e05df3b1SJaegeuk Kim 156309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 157309cc2b6SJaegeuk Kim struct nat_entry *ne) 158309cc2b6SJaegeuk Kim { 159309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 160309cc2b6SJaegeuk Kim struct nat_entry_set *head; 161309cc2b6SJaegeuk Kim 162309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 163309cc2b6SJaegeuk Kim if (!head) { 16480c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 165309cc2b6SJaegeuk Kim 166309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 167309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 168309cc2b6SJaegeuk Kim head->set = set; 169309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1709be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 171309cc2b6SJaegeuk Kim } 172febeca6dSChao Yu 173febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 174febeca6dSChao Yu goto refresh_list; 175febeca6dSChao Yu 176309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 177309cc2b6SJaegeuk Kim head->entry_cnt++; 178309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 179febeca6dSChao Yu refresh_list: 180febeca6dSChao Yu if (nat_get_blkaddr(ne) == NEW_ADDR) 181febeca6dSChao Yu list_del_init(&ne->list); 182febeca6dSChao Yu else 183febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 184309cc2b6SJaegeuk Kim } 185309cc2b6SJaegeuk Kim 186309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 1870b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 188309cc2b6SJaegeuk Kim { 189309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 190309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 1910b28b71eSKinglong Mee set->entry_cnt--; 192309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 193309cc2b6SJaegeuk Kim } 194309cc2b6SJaegeuk Kim 195309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 196309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 197309cc2b6SJaegeuk Kim { 198309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 199309cc2b6SJaegeuk Kim start, nr); 200309cc2b6SJaegeuk Kim } 201309cc2b6SJaegeuk Kim 2022dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2032dcf51abSJaegeuk Kim { 2042dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2052dcf51abSJaegeuk Kim struct nat_entry *e; 2062dcf51abSJaegeuk Kim bool need = false; 2072dcf51abSJaegeuk Kim 208b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2092dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2102dcf51abSJaegeuk Kim if (e) { 2112dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2122dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2132dcf51abSJaegeuk Kim need = true; 2142dcf51abSJaegeuk Kim } 215b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2162dcf51abSJaegeuk Kim return need; 2172dcf51abSJaegeuk Kim } 2182dcf51abSJaegeuk Kim 21988bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 220e05df3b1SJaegeuk Kim { 221e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 222e05df3b1SJaegeuk Kim struct nat_entry *e; 22388bd02c9SJaegeuk Kim bool is_cp = true; 224e05df3b1SJaegeuk Kim 225b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 226e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2277ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22888bd02c9SJaegeuk Kim is_cp = false; 229b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 230e05df3b1SJaegeuk Kim return is_cp; 231e05df3b1SJaegeuk Kim } 232e05df3b1SJaegeuk Kim 23388bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 234b6fe5873SJaegeuk Kim { 235b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 236b6fe5873SJaegeuk Kim struct nat_entry *e; 23788bd02c9SJaegeuk Kim bool need_update = true; 238b6fe5873SJaegeuk Kim 239b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 24088bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 24188bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 24288bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24388bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24488bd02c9SJaegeuk Kim need_update = false; 245b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24688bd02c9SJaegeuk Kim return need_update; 247b6fe5873SJaegeuk Kim } 248b6fe5873SJaegeuk Kim 2495c9e4184SChao Yu static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 2505c9e4184SChao Yu bool no_fail) 251e05df3b1SJaegeuk Kim { 252e05df3b1SJaegeuk Kim struct nat_entry *new; 253e05df3b1SJaegeuk Kim 2545c9e4184SChao Yu if (no_fail) { 25580c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2569be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 2575c9e4184SChao Yu } else { 2585c9e4184SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2595c9e4184SChao Yu if (!new) 2605c9e4184SChao Yu return NULL; 2615c9e4184SChao Yu if (radix_tree_insert(&nm_i->nat_root, nid, new)) { 2625c9e4184SChao Yu kmem_cache_free(nat_entry_slab, new); 2635c9e4184SChao Yu return NULL; 2645c9e4184SChao Yu } 2655c9e4184SChao Yu } 2665c9e4184SChao Yu 267e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 268e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 26988bd02c9SJaegeuk Kim nat_reset_flag(new); 270e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 271e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 272e05df3b1SJaegeuk Kim return new; 273e05df3b1SJaegeuk Kim } 274e05df3b1SJaegeuk Kim 2751515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 276e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 277e05df3b1SJaegeuk Kim { 2781515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 279e05df3b1SJaegeuk Kim struct nat_entry *e; 2809be32d72SJaegeuk Kim 281e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 282e05df3b1SJaegeuk Kim if (!e) { 2835c9e4184SChao Yu e = grab_nat_entry(nm_i, nid, false); 2845c9e4184SChao Yu if (e) 28594dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 2861515aef0SChao Yu } else { 2870c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 2880c0b471eSEric Biggers nat_get_blkaddr(e) != 2890c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 2901515aef0SChao Yu nat_get_version(e) != ne->version); 291e05df3b1SJaegeuk Kim } 292e05df3b1SJaegeuk Kim } 293e05df3b1SJaegeuk Kim 294e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 295479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 296e05df3b1SJaegeuk Kim { 297e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 298e05df3b1SJaegeuk Kim struct nat_entry *e; 2999be32d72SJaegeuk Kim 300b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 301e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 302e05df3b1SJaegeuk Kim if (!e) { 3035c9e4184SChao Yu e = grab_nat_entry(nm_i, ni->nid, true); 3045c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3059850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 306e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 307e05df3b1SJaegeuk Kim /* 308e05df3b1SJaegeuk Kim * when nid is reallocated, 309e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 310e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 311e05df3b1SJaegeuk Kim */ 3125c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3139850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 314e05df3b1SJaegeuk Kim } 315e05df3b1SJaegeuk Kim 316e05df3b1SJaegeuk Kim /* sanity check */ 3179850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3189850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 319e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 321e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3229850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 323e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 324e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 325e05df3b1SJaegeuk Kim 326e1c42045Sarter97 /* increment version no as node is removed */ 327e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 328e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 329e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 33026834466SJaegeuk Kim 33126834466SJaegeuk Kim /* in order to reuse the nid */ 33226834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 33326834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 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 { 558e05df3b1SJaegeuk Kim BUG(); 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); 582e05df3b1SJaegeuk Kim 583e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5841646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5851646cfacSJaegeuk Kim 5861646cfacSJaegeuk Kim if (!npage[0]) { 587e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 588e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 589e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5901646cfacSJaegeuk Kim } 591f1a3b98eSJaegeuk Kim 592f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 593f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 59476629165SJaegeuk Kim err = -ENOENT; 595f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 596f1a3b98eSJaegeuk Kim goto release_out; 597f1a3b98eSJaegeuk Kim } 598f1a3b98eSJaegeuk Kim 599e05df3b1SJaegeuk Kim parent = npage[0]; 60052c2db3fSChangman Lee if (level != 0) 601e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 602e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 603e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 604e05df3b1SJaegeuk Kim 605e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 606e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 607e05df3b1SJaegeuk Kim bool done = false; 608e05df3b1SJaegeuk Kim 609266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 610e05df3b1SJaegeuk Kim /* alloc new node */ 611e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 612e05df3b1SJaegeuk Kim err = -ENOSPC; 613e05df3b1SJaegeuk Kim goto release_pages; 614e05df3b1SJaegeuk Kim } 615e05df3b1SJaegeuk Kim 616e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6175f4ce6abSYunlei He npage[i] = new_node_page(dn, noffset[i]); 618e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 619e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 620e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 621e05df3b1SJaegeuk Kim goto release_pages; 622e05df3b1SJaegeuk Kim } 623e05df3b1SJaegeuk Kim 624e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 625e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 626e05df3b1SJaegeuk Kim done = true; 627266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 628e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 629e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 630e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 631e05df3b1SJaegeuk Kim goto release_pages; 632e05df3b1SJaegeuk Kim } 633e05df3b1SJaegeuk Kim done = true; 634e05df3b1SJaegeuk Kim } 635e05df3b1SJaegeuk Kim if (i == 1) { 636e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 637e05df3b1SJaegeuk Kim unlock_page(parent); 638e05df3b1SJaegeuk Kim } else { 639e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 640e05df3b1SJaegeuk Kim } 641e05df3b1SJaegeuk Kim 642e05df3b1SJaegeuk Kim if (!done) { 643e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 644e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 645e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 646e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 647e05df3b1SJaegeuk Kim goto release_out; 648e05df3b1SJaegeuk Kim } 649e05df3b1SJaegeuk Kim } 650e05df3b1SJaegeuk Kim if (i < level) { 651e05df3b1SJaegeuk Kim parent = npage[i]; 652e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 653e05df3b1SJaegeuk Kim } 654e05df3b1SJaegeuk Kim } 655e05df3b1SJaegeuk Kim dn->nid = nids[level]; 656e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 657e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 6587a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 6597a2af766SChao Yu dn->node_page, dn->ofs_in_node); 660e05df3b1SJaegeuk Kim return 0; 661e05df3b1SJaegeuk Kim 662e05df3b1SJaegeuk Kim release_pages: 663e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 664e05df3b1SJaegeuk Kim if (i > 1) 665e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 666e05df3b1SJaegeuk Kim release_out: 667e05df3b1SJaegeuk Kim dn->inode_page = NULL; 668e05df3b1SJaegeuk Kim dn->node_page = NULL; 6693cf45747SChao Yu if (err == -ENOENT) { 6703cf45747SChao Yu dn->cur_level = i; 6713cf45747SChao Yu dn->max_level = level; 6720a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 6733cf45747SChao Yu } 674e05df3b1SJaegeuk Kim return err; 675e05df3b1SJaegeuk Kim } 676e05df3b1SJaegeuk Kim 677e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 678e05df3b1SJaegeuk Kim { 6794081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 680e05df3b1SJaegeuk Kim struct node_info ni; 681e05df3b1SJaegeuk Kim 682e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 6839850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 684e05df3b1SJaegeuk Kim 685e05df3b1SJaegeuk Kim /* Deallocate node address */ 68671e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 687000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 688479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 689e05df3b1SJaegeuk Kim 690e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 691e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 692e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 6930f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 694e05df3b1SJaegeuk Kim } 695000519f2SChao Yu 696e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 697caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 698e05df3b1SJaegeuk Kim 699e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 700bf39c00aSJaegeuk Kim 701bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 702bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 703bf39c00aSJaegeuk Kim 704e05df3b1SJaegeuk Kim dn->node_page = NULL; 70551dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 706e05df3b1SJaegeuk Kim } 707e05df3b1SJaegeuk Kim 708e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 709e05df3b1SJaegeuk Kim { 710e05df3b1SJaegeuk Kim struct page *page; 711e05df3b1SJaegeuk Kim 712e05df3b1SJaegeuk Kim if (dn->nid == 0) 713e05df3b1SJaegeuk Kim return 1; 714e05df3b1SJaegeuk Kim 715e05df3b1SJaegeuk Kim /* get direct node */ 7164081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 717e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 718e05df3b1SJaegeuk Kim return 1; 719e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 720e05df3b1SJaegeuk Kim return PTR_ERR(page); 721e05df3b1SJaegeuk Kim 722e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 723e05df3b1SJaegeuk Kim dn->node_page = page; 724e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 725e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 726e05df3b1SJaegeuk Kim truncate_node(dn); 727e05df3b1SJaegeuk Kim return 1; 728e05df3b1SJaegeuk Kim } 729e05df3b1SJaegeuk Kim 730e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 731e05df3b1SJaegeuk Kim int ofs, int depth) 732e05df3b1SJaegeuk Kim { 733e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 734e05df3b1SJaegeuk Kim struct page *page; 735e05df3b1SJaegeuk Kim struct f2fs_node *rn; 736e05df3b1SJaegeuk Kim nid_t child_nid; 737e05df3b1SJaegeuk Kim unsigned int child_nofs; 738e05df3b1SJaegeuk Kim int freed = 0; 739e05df3b1SJaegeuk Kim int i, ret; 740e05df3b1SJaegeuk Kim 741e05df3b1SJaegeuk Kim if (dn->nid == 0) 742e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 743e05df3b1SJaegeuk Kim 74451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 74551dd6249SNamjae Jeon 7464081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 74751dd6249SNamjae Jeon if (IS_ERR(page)) { 74851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 749e05df3b1SJaegeuk Kim return PTR_ERR(page); 75051dd6249SNamjae Jeon } 751e05df3b1SJaegeuk Kim 75279344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 75379344efbSJaegeuk Kim 75445590710SGu Zheng rn = F2FS_NODE(page); 755e05df3b1SJaegeuk Kim if (depth < 3) { 756e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 757e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 758e05df3b1SJaegeuk Kim if (child_nid == 0) 759e05df3b1SJaegeuk Kim continue; 760e05df3b1SJaegeuk Kim rdn.nid = child_nid; 761e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 762e05df3b1SJaegeuk Kim if (ret < 0) 763e05df3b1SJaegeuk Kim goto out_err; 76412719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 76593bae099SJaegeuk Kim dn->node_changed = true; 766e05df3b1SJaegeuk Kim } 767e05df3b1SJaegeuk Kim } else { 768e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 769e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 770e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 771e05df3b1SJaegeuk Kim if (child_nid == 0) { 772e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 773e05df3b1SJaegeuk Kim continue; 774e05df3b1SJaegeuk Kim } 775e05df3b1SJaegeuk Kim rdn.nid = child_nid; 776e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 777e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 77812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 77993bae099SJaegeuk Kim dn->node_changed = true; 780e05df3b1SJaegeuk Kim child_nofs += ret; 781e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 782e05df3b1SJaegeuk Kim goto out_err; 783e05df3b1SJaegeuk Kim } 784e05df3b1SJaegeuk Kim } 785e05df3b1SJaegeuk Kim freed = child_nofs; 786e05df3b1SJaegeuk Kim } 787e05df3b1SJaegeuk Kim 788e05df3b1SJaegeuk Kim if (!ofs) { 789e05df3b1SJaegeuk Kim /* remove current indirect node */ 790e05df3b1SJaegeuk Kim dn->node_page = page; 791e05df3b1SJaegeuk Kim truncate_node(dn); 792e05df3b1SJaegeuk Kim freed++; 793e05df3b1SJaegeuk Kim } else { 794e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 795e05df3b1SJaegeuk Kim } 79651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 797e05df3b1SJaegeuk Kim return freed; 798e05df3b1SJaegeuk Kim 799e05df3b1SJaegeuk Kim out_err: 800e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 80151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 802e05df3b1SJaegeuk Kim return ret; 803e05df3b1SJaegeuk Kim } 804e05df3b1SJaegeuk Kim 805e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 806e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 807e05df3b1SJaegeuk Kim { 808e05df3b1SJaegeuk Kim struct page *pages[2]; 809e05df3b1SJaegeuk Kim nid_t nid[3]; 810e05df3b1SJaegeuk Kim nid_t child_nid; 811e05df3b1SJaegeuk Kim int err = 0; 812e05df3b1SJaegeuk Kim int i; 813e05df3b1SJaegeuk Kim int idx = depth - 2; 814e05df3b1SJaegeuk Kim 815e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 816e05df3b1SJaegeuk Kim if (!nid[0]) 817e05df3b1SJaegeuk Kim return 0; 818e05df3b1SJaegeuk Kim 819e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 820a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 821e1c42045Sarter97 /* reference count'll be increased */ 8224081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 823e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 824e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 825a225dca3Sshifei10.ge idx = i - 1; 826e05df3b1SJaegeuk Kim goto fail; 827e05df3b1SJaegeuk Kim } 828e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 829e05df3b1SJaegeuk Kim } 830e05df3b1SJaegeuk Kim 83179344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 83279344efbSJaegeuk Kim 833e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 834a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 835e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 836e05df3b1SJaegeuk Kim if (!child_nid) 837e05df3b1SJaegeuk Kim continue; 838e05df3b1SJaegeuk Kim dn->nid = child_nid; 839e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 840e05df3b1SJaegeuk Kim if (err < 0) 841e05df3b1SJaegeuk Kim goto fail; 84212719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 84393bae099SJaegeuk Kim dn->node_changed = true; 844e05df3b1SJaegeuk Kim } 845e05df3b1SJaegeuk Kim 846a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 847e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 848e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 849e05df3b1SJaegeuk Kim truncate_node(dn); 850e05df3b1SJaegeuk Kim } else { 851e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 852e05df3b1SJaegeuk Kim } 853e05df3b1SJaegeuk Kim offset[idx]++; 854a225dca3Sshifei10.ge offset[idx + 1] = 0; 855a225dca3Sshifei10.ge idx--; 856e05df3b1SJaegeuk Kim fail: 857a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 858e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 85951dd6249SNamjae Jeon 86051dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 86151dd6249SNamjae Jeon 862e05df3b1SJaegeuk Kim return err; 863e05df3b1SJaegeuk Kim } 864e05df3b1SJaegeuk Kim 8650a8165d7SJaegeuk Kim /* 866e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 867e05df3b1SJaegeuk Kim */ 868e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 869e05df3b1SJaegeuk Kim { 8704081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 871e05df3b1SJaegeuk Kim int err = 0, cont = 1; 872e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8737dd690c8SJaegeuk Kim unsigned int nofs = 0; 87458bfaf44SJaegeuk Kim struct f2fs_inode *ri; 875e05df3b1SJaegeuk Kim struct dnode_of_data dn; 876e05df3b1SJaegeuk Kim struct page *page; 877e05df3b1SJaegeuk Kim 87851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 87951dd6249SNamjae Jeon 88081ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 881ff373558SJaegeuk Kim 882e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 88351dd6249SNamjae Jeon if (IS_ERR(page)) { 88451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 885e05df3b1SJaegeuk Kim return PTR_ERR(page); 88651dd6249SNamjae Jeon } 887e05df3b1SJaegeuk Kim 888e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 889e05df3b1SJaegeuk Kim unlock_page(page); 890e05df3b1SJaegeuk Kim 89158bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 892e05df3b1SJaegeuk Kim switch (level) { 893e05df3b1SJaegeuk Kim case 0: 894e05df3b1SJaegeuk Kim case 1: 895e05df3b1SJaegeuk Kim nofs = noffset[1]; 896e05df3b1SJaegeuk Kim break; 897e05df3b1SJaegeuk Kim case 2: 898e05df3b1SJaegeuk Kim nofs = noffset[1]; 899e05df3b1SJaegeuk Kim if (!offset[level - 1]) 900e05df3b1SJaegeuk Kim goto skip_partial; 90158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 902e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 903e05df3b1SJaegeuk Kim goto fail; 904e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 905e05df3b1SJaegeuk Kim break; 906e05df3b1SJaegeuk Kim case 3: 907e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 908e05df3b1SJaegeuk Kim if (!offset[level - 1]) 909e05df3b1SJaegeuk Kim goto skip_partial; 91058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 911e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 912e05df3b1SJaegeuk Kim goto fail; 913e05df3b1SJaegeuk Kim break; 914e05df3b1SJaegeuk Kim default: 915e05df3b1SJaegeuk Kim BUG(); 916e05df3b1SJaegeuk Kim } 917e05df3b1SJaegeuk Kim 918e05df3b1SJaegeuk Kim skip_partial: 919e05df3b1SJaegeuk Kim while (cont) { 92058bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 921e05df3b1SJaegeuk Kim switch (offset[0]) { 922e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 923e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 924e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 925e05df3b1SJaegeuk Kim break; 926e05df3b1SJaegeuk Kim 927e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 928e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 929e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 930e05df3b1SJaegeuk Kim break; 931e05df3b1SJaegeuk Kim 932e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 933e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 934e05df3b1SJaegeuk Kim cont = 0; 935e05df3b1SJaegeuk Kim break; 936e05df3b1SJaegeuk Kim 937e05df3b1SJaegeuk Kim default: 938e05df3b1SJaegeuk Kim BUG(); 939e05df3b1SJaegeuk Kim } 940e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 941e05df3b1SJaegeuk Kim goto fail; 942e05df3b1SJaegeuk Kim if (offset[1] == 0 && 94358bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 944e05df3b1SJaegeuk Kim lock_page(page); 945ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 946fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 94758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 948e05df3b1SJaegeuk Kim set_page_dirty(page); 949e05df3b1SJaegeuk Kim unlock_page(page); 950e05df3b1SJaegeuk Kim } 951e05df3b1SJaegeuk Kim offset[1] = 0; 952e05df3b1SJaegeuk Kim offset[0]++; 953e05df3b1SJaegeuk Kim nofs += err; 954e05df3b1SJaegeuk Kim } 955e05df3b1SJaegeuk Kim fail: 956e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 95751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 958e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 959e05df3b1SJaegeuk Kim } 960e05df3b1SJaegeuk Kim 9614f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 9624f16fb0fSJaegeuk Kim { 9634081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9644f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9654f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9664f16fb0fSJaegeuk Kim struct page *npage; 9674f16fb0fSJaegeuk Kim 9684f16fb0fSJaegeuk Kim if (!nid) 9694f16fb0fSJaegeuk Kim return 0; 9704f16fb0fSJaegeuk Kim 9714f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9724f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9734f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9744f16fb0fSJaegeuk Kim 975205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 97665985d93SJaegeuk Kim 9774f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 9784f16fb0fSJaegeuk Kim 9794f16fb0fSJaegeuk Kim if (page) 98001d2d1aaSChao Yu dn.inode_page_locked = true; 9814f16fb0fSJaegeuk Kim truncate_node(&dn); 9824f16fb0fSJaegeuk Kim return 0; 9834f16fb0fSJaegeuk Kim } 9844f16fb0fSJaegeuk Kim 98539936837SJaegeuk Kim /* 9864f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9874f4124d0SChao Yu * f2fs_unlock_op(). 98839936837SJaegeuk Kim */ 98913ec7297SChao Yu int remove_inode_page(struct inode *inode) 990e05df3b1SJaegeuk Kim { 991e05df3b1SJaegeuk Kim struct dnode_of_data dn; 99213ec7297SChao Yu int err; 993e05df3b1SJaegeuk Kim 994c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 99513ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 99613ec7297SChao Yu if (err) 99713ec7297SChao Yu return err; 998e05df3b1SJaegeuk Kim 99913ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 100013ec7297SChao Yu if (err) { 1001c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 100213ec7297SChao Yu return err; 1003e05df3b1SJaegeuk Kim } 1004c2e69583SJaegeuk Kim 1005c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1006c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1007c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 1008c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 1009c2e69583SJaegeuk Kim 1010e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10119850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10120eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1013c2e69583SJaegeuk Kim 1014c2e69583SJaegeuk Kim /* will put inode & node pages */ 1015e05df3b1SJaegeuk Kim truncate_node(&dn); 101613ec7297SChao Yu return 0; 1017e05df3b1SJaegeuk Kim } 1018e05df3b1SJaegeuk Kim 1019a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1020e05df3b1SJaegeuk Kim { 1021e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1022e05df3b1SJaegeuk Kim 1023e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1024e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 102544a83ff6SJaegeuk Kim 102644a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10275f4ce6abSYunlei He return new_node_page(&dn, 0); 1028e05df3b1SJaegeuk Kim } 1029e05df3b1SJaegeuk Kim 10305f4ce6abSYunlei He struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1031e05df3b1SJaegeuk Kim { 10324081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 103325cc5d3bSJaegeuk Kim struct node_info new_ni; 1034e05df3b1SJaegeuk Kim struct page *page; 1035e05df3b1SJaegeuk Kim int err; 1036e05df3b1SJaegeuk Kim 103791942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1038e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1039e05df3b1SJaegeuk Kim 1040300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1041e05df3b1SJaegeuk Kim if (!page) 1042e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1043e05df3b1SJaegeuk Kim 10440abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 10459c02740cSJaegeuk Kim goto fail; 10460abd675eSChao Yu 104725cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 104825cc5d3bSJaegeuk Kim get_node_info(sbi, dn->nid, &new_ni); 104925cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 105025cc5d3bSJaegeuk Kim #endif 105125cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1052e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 105325cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 105425cc5d3bSJaegeuk Kim new_ni.flag = 0; 105525cc5d3bSJaegeuk Kim new_ni.version = 0; 1056479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10579c02740cSJaegeuk Kim 1058fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10599c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1060398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 1061237c0790SJaegeuk Kim if (!PageUptodate(page)) 10629c02740cSJaegeuk Kim SetPageUptodate(page); 106312719ae1SJaegeuk Kim if (set_page_dirty(page)) 106412719ae1SJaegeuk Kim dn->node_changed = true; 1065e05df3b1SJaegeuk Kim 10664bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1067205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1068479bd73aSJaegeuk Kim 1069e05df3b1SJaegeuk Kim if (ofs == 0) 1070e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1071e05df3b1SJaegeuk Kim return page; 1072e05df3b1SJaegeuk Kim 1073e05df3b1SJaegeuk Kim fail: 107471e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1075e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1076e05df3b1SJaegeuk Kim return ERR_PTR(err); 1077e05df3b1SJaegeuk Kim } 1078e05df3b1SJaegeuk Kim 107956ae674cSJaegeuk Kim /* 108056ae674cSJaegeuk Kim * Caller should do after getting the following values. 108156ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 108286531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 108356ae674cSJaegeuk Kim */ 108404d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1085e05df3b1SJaegeuk Kim { 10864081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1087e05df3b1SJaegeuk Kim struct node_info ni; 1088cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 108905ca3632SJaegeuk Kim .sbi = sbi, 1090cf04e8ebSJaegeuk Kim .type = NODE, 109104d328deSMike Christie .op = REQ_OP_READ, 109204d328deSMike Christie .op_flags = op_flags, 109305ca3632SJaegeuk Kim .page = page, 10944375a336SJaegeuk Kim .encrypted_page = NULL, 1095cf04e8ebSJaegeuk Kim }; 1096e05df3b1SJaegeuk Kim 10973bdad3c7SJaegeuk Kim if (PageUptodate(page)) 10983bdad3c7SJaegeuk Kim return LOCKED_PAGE; 10993bdad3c7SJaegeuk Kim 1100e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1101e05df3b1SJaegeuk Kim 11026bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 11032bca1e23SJaegeuk Kim ClearPageUptodate(page); 1104e05df3b1SJaegeuk Kim return -ENOENT; 1105393ff91fSJaegeuk Kim } 1106393ff91fSJaegeuk Kim 11077a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 110805ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1109e05df3b1SJaegeuk Kim } 1110e05df3b1SJaegeuk Kim 11110a8165d7SJaegeuk Kim /* 1112e05df3b1SJaegeuk Kim * Readahead a node page 1113e05df3b1SJaegeuk Kim */ 1114e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1115e05df3b1SJaegeuk Kim { 1116e05df3b1SJaegeuk Kim struct page *apage; 111756ae674cSJaegeuk Kim int err; 1118e05df3b1SJaegeuk Kim 1119e8458725SChao Yu if (!nid) 1120e8458725SChao Yu return; 1121e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1122e8458725SChao Yu 1123999270deSFan Li rcu_read_lock(); 1124999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1125999270deSFan Li rcu_read_unlock(); 1126999270deSFan Li if (apage) 1127393ff91fSJaegeuk Kim return; 1128e05df3b1SJaegeuk Kim 1129300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1130e05df3b1SJaegeuk Kim if (!apage) 1131e05df3b1SJaegeuk Kim return; 1132e05df3b1SJaegeuk Kim 113370246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 113486531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1135e05df3b1SJaegeuk Kim } 1136e05df3b1SJaegeuk Kim 113717a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11380e022ea8SChao Yu struct page *parent, int start) 1139e05df3b1SJaegeuk Kim { 114056ae674cSJaegeuk Kim struct page *page; 114156ae674cSJaegeuk Kim int err; 11424aa69d56SJaegeuk Kim 11434aa69d56SJaegeuk Kim if (!nid) 11444aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11454aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1146afcb7ca0SJaegeuk Kim repeat: 1147300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1148e05df3b1SJaegeuk Kim if (!page) 1149e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1150e05df3b1SJaegeuk Kim 115170fd7614SChristoph Hellwig err = read_node_page(page, 0); 115286531d6bSJaegeuk Kim if (err < 0) { 115386531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1154e05df3b1SJaegeuk Kim return ERR_PTR(err); 1155e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 11561f258ec1SChao Yu err = 0; 1157e1c51b9fSChao Yu goto page_hit; 115886531d6bSJaegeuk Kim } 1159aaf96075SJaegeuk Kim 11600e022ea8SChao Yu if (parent) 116179344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11620e022ea8SChao Yu 1163e1c51b9fSChao Yu lock_page(page); 1164e1c51b9fSChao Yu 11654ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1166afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1167afcb7ca0SJaegeuk Kim goto repeat; 1168afcb7ca0SJaegeuk Kim } 11691563ac75SChao Yu 11701f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 11711f258ec1SChao Yu err = -EIO; 11721563ac75SChao Yu goto out_err; 11731f258ec1SChao Yu } 1174704956ecSChao Yu 1175704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1176704956ecSChao Yu err = -EBADMSG; 1177704956ecSChao Yu goto out_err; 1178704956ecSChao Yu } 1179e1c51b9fSChao Yu page_hit: 11800c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 11811f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 11821f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 11831f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 11841f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 11851f258ec1SChao Yu next_blkaddr_of_node(page)); 11860c9df7fbSYunlong Song ClearPageUptodate(page); 11871f258ec1SChao Yu err = -EINVAL; 11880c9df7fbSYunlong Song out_err: 11890c9df7fbSYunlong Song f2fs_put_page(page, 1); 11901f258ec1SChao Yu return ERR_PTR(err); 11910c9df7fbSYunlong Song } 1192e05df3b1SJaegeuk Kim return page; 1193e05df3b1SJaegeuk Kim } 1194e05df3b1SJaegeuk Kim 11950e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11960e022ea8SChao Yu { 11970e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11980e022ea8SChao Yu } 11990e022ea8SChao Yu 1200e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1201e05df3b1SJaegeuk Kim { 12024081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 12030e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1204e05df3b1SJaegeuk Kim 12050e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1206e05df3b1SJaegeuk Kim } 1207e05df3b1SJaegeuk Kim 12082049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 12092049d4fcSJaegeuk Kim { 12102049d4fcSJaegeuk Kim struct inode *inode; 12112049d4fcSJaegeuk Kim struct page *page; 12120f3311a8SChao Yu int ret; 12132049d4fcSJaegeuk Kim 12142049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 12152049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 12162049d4fcSJaegeuk Kim if (!inode) 12172049d4fcSJaegeuk Kim return; 12182049d4fcSJaegeuk Kim 12194a6de50dSJaegeuk Kim page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); 12202049d4fcSJaegeuk Kim if (!page) 12212049d4fcSJaegeuk Kim goto iput_out; 12222049d4fcSJaegeuk Kim 12232049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12242049d4fcSJaegeuk Kim goto page_out; 12252049d4fcSJaegeuk Kim 12262049d4fcSJaegeuk Kim if (!PageDirty(page)) 12272049d4fcSJaegeuk Kim goto page_out; 12282049d4fcSJaegeuk Kim 12292049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12302049d4fcSJaegeuk Kim goto page_out; 12312049d4fcSJaegeuk Kim 12320f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12332049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 1234933439c8SChao Yu remove_dirty_inode(inode); 12350f3311a8SChao Yu if (ret) 12362049d4fcSJaegeuk Kim set_page_dirty(page); 12372049d4fcSJaegeuk Kim page_out: 12384a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12392049d4fcSJaegeuk Kim iput_out: 12402049d4fcSJaegeuk Kim iput(inode); 12412049d4fcSJaegeuk Kim } 12422049d4fcSJaegeuk Kim 1243da011cc0SChao Yu void move_node_page(struct page *node_page, int gc_type) 1244da011cc0SChao Yu { 1245da011cc0SChao Yu if (gc_type == FG_GC) { 1246da011cc0SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(node_page); 1247da011cc0SChao Yu struct writeback_control wbc = { 1248da011cc0SChao Yu .sync_mode = WB_SYNC_ALL, 1249da011cc0SChao Yu .nr_to_write = 1, 1250da011cc0SChao Yu .for_reclaim = 0, 1251da011cc0SChao Yu }; 1252da011cc0SChao Yu 1253da011cc0SChao Yu set_page_dirty(node_page); 1254da011cc0SChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true); 1255da011cc0SChao Yu 1256da011cc0SChao Yu f2fs_bug_on(sbi, PageWriteback(node_page)); 1257da011cc0SChao Yu if (!clear_page_dirty_for_io(node_page)) 1258da011cc0SChao Yu goto out_page; 1259da011cc0SChao Yu 1260da011cc0SChao Yu if (NODE_MAPPING(sbi)->a_ops->writepage(node_page, &wbc)) 1261da011cc0SChao Yu unlock_page(node_page); 1262da011cc0SChao Yu goto release_page; 1263da011cc0SChao Yu } else { 1264da011cc0SChao Yu /* set page dirty and write it */ 1265da011cc0SChao Yu if (!PageWriteback(node_page)) 1266da011cc0SChao Yu set_page_dirty(node_page); 1267da011cc0SChao Yu } 1268da011cc0SChao Yu out_page: 1269da011cc0SChao Yu unlock_page(node_page); 1270da011cc0SChao Yu release_page: 1271da011cc0SChao Yu f2fs_put_page(node_page, 0); 1272da011cc0SChao Yu } 1273da011cc0SChao Yu 1274608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1275e05df3b1SJaegeuk Kim { 1276e05df3b1SJaegeuk Kim pgoff_t index, end; 1277e05df3b1SJaegeuk Kim struct pagevec pvec; 1278608514deSJaegeuk Kim struct page *last_page = NULL; 127952681375SJaegeuk Kim 128052681375SJaegeuk Kim pagevec_init(&pvec, 0); 128152681375SJaegeuk Kim index = 0; 128252681375SJaegeuk Kim end = ULONG_MAX; 128352681375SJaegeuk Kim 128452681375SJaegeuk Kim while (index <= end) { 128552681375SJaegeuk Kim int i, nr_pages; 128652681375SJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 128752681375SJaegeuk Kim PAGECACHE_TAG_DIRTY, 128852681375SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 128952681375SJaegeuk Kim if (nr_pages == 0) 129052681375SJaegeuk Kim break; 129152681375SJaegeuk Kim 129252681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 129352681375SJaegeuk Kim struct page *page = pvec.pages[i]; 129452681375SJaegeuk Kim 129552681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1296608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 129752681375SJaegeuk Kim pagevec_release(&pvec); 1298608514deSJaegeuk Kim return ERR_PTR(-EIO); 129952681375SJaegeuk Kim } 130052681375SJaegeuk Kim 130152681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 130252681375SJaegeuk Kim continue; 130352681375SJaegeuk Kim if (ino_of_node(page) != ino) 130452681375SJaegeuk Kim continue; 130552681375SJaegeuk Kim 130652681375SJaegeuk Kim lock_page(page); 130752681375SJaegeuk Kim 130852681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 130952681375SJaegeuk Kim continue_unlock: 131052681375SJaegeuk Kim unlock_page(page); 131152681375SJaegeuk Kim continue; 131252681375SJaegeuk Kim } 131352681375SJaegeuk Kim if (ino_of_node(page) != ino) 131452681375SJaegeuk Kim goto continue_unlock; 131552681375SJaegeuk Kim 131652681375SJaegeuk Kim if (!PageDirty(page)) { 131752681375SJaegeuk Kim /* someone wrote it for us */ 131852681375SJaegeuk Kim goto continue_unlock; 131952681375SJaegeuk Kim } 132052681375SJaegeuk Kim 1321608514deSJaegeuk Kim if (last_page) 1322608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1323608514deSJaegeuk Kim 1324608514deSJaegeuk Kim get_page(page); 1325608514deSJaegeuk Kim last_page = page; 1326608514deSJaegeuk Kim unlock_page(page); 1327608514deSJaegeuk Kim } 1328608514deSJaegeuk Kim pagevec_release(&pvec); 1329608514deSJaegeuk Kim cond_resched(); 1330608514deSJaegeuk Kim } 1331608514deSJaegeuk Kim return last_page; 1332608514deSJaegeuk Kim } 1333608514deSJaegeuk Kim 1334d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1335b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 1336b0af6d49SChao Yu enum iostat_type io_type) 1337faa24895SJaegeuk Kim { 1338faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1339faa24895SJaegeuk Kim nid_t nid; 1340faa24895SJaegeuk Kim struct node_info ni; 1341faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1342faa24895SJaegeuk Kim .sbi = sbi, 1343faa24895SJaegeuk Kim .type = NODE, 1344faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1345faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1346faa24895SJaegeuk Kim .page = page, 1347faa24895SJaegeuk Kim .encrypted_page = NULL, 1348d68f735bSJaegeuk Kim .submitted = false, 1349b0af6d49SChao Yu .io_type = io_type, 1350faa24895SJaegeuk Kim }; 1351faa24895SJaegeuk Kim 1352faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1353faa24895SJaegeuk Kim 1354faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1355faa24895SJaegeuk Kim goto redirty_out; 1356faa24895SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1357faa24895SJaegeuk Kim goto redirty_out; 1358faa24895SJaegeuk Kim 1359faa24895SJaegeuk Kim /* get old block addr of this node page */ 1360faa24895SJaegeuk Kim nid = nid_of_node(page); 1361faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1362faa24895SJaegeuk Kim 1363faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1364faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1365faa24895SJaegeuk Kim goto redirty_out; 1366faa24895SJaegeuk Kim } else { 1367faa24895SJaegeuk Kim down_read(&sbi->node_write); 1368faa24895SJaegeuk Kim } 1369faa24895SJaegeuk Kim 1370faa24895SJaegeuk Kim get_node_info(sbi, nid, &ni); 1371faa24895SJaegeuk Kim 1372faa24895SJaegeuk Kim /* This page is already truncated */ 1373faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1374faa24895SJaegeuk Kim ClearPageUptodate(page); 1375faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1376faa24895SJaegeuk Kim up_read(&sbi->node_write); 1377faa24895SJaegeuk Kim unlock_page(page); 1378faa24895SJaegeuk Kim return 0; 1379faa24895SJaegeuk Kim } 1380faa24895SJaegeuk Kim 1381e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1382e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1383e7c75ab0SJaegeuk Kim 1384faa24895SJaegeuk Kim set_page_writeback(page); 1385faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 1386faa24895SJaegeuk Kim write_node_page(nid, &fio); 1387faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1388faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1389faa24895SJaegeuk Kim up_read(&sbi->node_write); 1390faa24895SJaegeuk Kim 1391d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1392b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1393b9109b0eSJaegeuk Kim page->index, NODE); 1394d68f735bSJaegeuk Kim submitted = NULL; 1395d68f735bSJaegeuk Kim } 1396faa24895SJaegeuk Kim 1397faa24895SJaegeuk Kim unlock_page(page); 1398faa24895SJaegeuk Kim 1399d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1400b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1401d68f735bSJaegeuk Kim submitted = NULL; 1402d68f735bSJaegeuk Kim } 1403d68f735bSJaegeuk Kim if (submitted) 1404d68f735bSJaegeuk Kim *submitted = fio.submitted; 1405faa24895SJaegeuk Kim 1406401db79fSYunlong Song if (do_balance) 1407401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1408faa24895SJaegeuk Kim return 0; 1409faa24895SJaegeuk Kim 1410faa24895SJaegeuk Kim redirty_out: 1411faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1412faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1413faa24895SJaegeuk Kim } 1414faa24895SJaegeuk Kim 1415faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1416faa24895SJaegeuk Kim struct writeback_control *wbc) 1417faa24895SJaegeuk Kim { 1418b0af6d49SChao Yu return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); 1419faa24895SJaegeuk Kim } 1420faa24895SJaegeuk Kim 142126de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1422608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1423608514deSJaegeuk Kim { 1424608514deSJaegeuk Kim pgoff_t index, end; 1425942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1426608514deSJaegeuk Kim struct pagevec pvec; 1427608514deSJaegeuk Kim int ret = 0; 1428608514deSJaegeuk Kim struct page *last_page = NULL; 1429608514deSJaegeuk Kim bool marked = false; 143026de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1431608514deSJaegeuk Kim 1432608514deSJaegeuk Kim if (atomic) { 1433608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1434608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1435608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1436608514deSJaegeuk Kim } 1437608514deSJaegeuk Kim retry: 1438608514deSJaegeuk Kim pagevec_init(&pvec, 0); 1439608514deSJaegeuk Kim index = 0; 1440608514deSJaegeuk Kim end = ULONG_MAX; 1441608514deSJaegeuk Kim 1442608514deSJaegeuk Kim while (index <= end) { 1443608514deSJaegeuk Kim int i, nr_pages; 1444608514deSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1445608514deSJaegeuk Kim PAGECACHE_TAG_DIRTY, 1446608514deSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1447608514deSJaegeuk Kim if (nr_pages == 0) 1448608514deSJaegeuk Kim break; 1449608514deSJaegeuk Kim 1450608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1451608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1452d68f735bSJaegeuk Kim bool submitted = false; 1453608514deSJaegeuk Kim 1454608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1455608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1456608514deSJaegeuk Kim pagevec_release(&pvec); 14579de69279SChao Yu ret = -EIO; 14589de69279SChao Yu goto out; 1459608514deSJaegeuk Kim } 1460608514deSJaegeuk Kim 1461608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1462608514deSJaegeuk Kim continue; 1463608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1464608514deSJaegeuk Kim continue; 1465608514deSJaegeuk Kim 1466608514deSJaegeuk Kim lock_page(page); 1467608514deSJaegeuk Kim 1468608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1469608514deSJaegeuk Kim continue_unlock: 1470608514deSJaegeuk Kim unlock_page(page); 1471608514deSJaegeuk Kim continue; 1472608514deSJaegeuk Kim } 1473608514deSJaegeuk Kim if (ino_of_node(page) != ino) 147452681375SJaegeuk Kim goto continue_unlock; 147552681375SJaegeuk Kim 1476608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1477608514deSJaegeuk Kim /* someone wrote it for us */ 1478608514deSJaegeuk Kim goto continue_unlock; 1479608514deSJaegeuk Kim } 1480608514deSJaegeuk Kim 1481608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1482608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1483608514deSJaegeuk Kim 1484d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1485d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1486d29fd172SJaegeuk Kim 1487608514deSJaegeuk Kim if (!atomic || page == last_page) { 148852681375SJaegeuk Kim set_fsync_mark(page, 1); 148926de9b11SJaegeuk Kim if (IS_INODE(page)) { 149026de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 149126de9b11SJaegeuk Kim FI_DIRTY_INODE)) 149226de9b11SJaegeuk Kim update_inode(inode, page); 149352681375SJaegeuk Kim set_dentry_mark(page, 149452681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 149526de9b11SJaegeuk Kim } 1496608514deSJaegeuk Kim /* may be written by other thread */ 1497608514deSJaegeuk Kim if (!PageDirty(page)) 1498608514deSJaegeuk Kim set_page_dirty(page); 1499608514deSJaegeuk Kim } 1500608514deSJaegeuk Kim 1501608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1502608514deSJaegeuk Kim goto continue_unlock; 150352681375SJaegeuk Kim 1504e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1505d68f735bSJaegeuk Kim page == last_page, 1506b0af6d49SChao Yu &submitted, wbc, true, 1507b0af6d49SChao Yu FS_NODE_IO); 1508c267ec15SJaegeuk Kim if (ret) { 150952681375SJaegeuk Kim unlock_page(page); 1510608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1511608514deSJaegeuk Kim break; 1512d68f735bSJaegeuk Kim } else if (submitted) { 1513942fd319SJaegeuk Kim last_idx = page->index; 1514608514deSJaegeuk Kim } 15153f5f4959SChao Yu 1516608514deSJaegeuk Kim if (page == last_page) { 1517608514deSJaegeuk Kim f2fs_put_page(page, 0); 1518608514deSJaegeuk Kim marked = true; 151952681375SJaegeuk Kim break; 152052681375SJaegeuk Kim } 1521c267ec15SJaegeuk Kim } 152252681375SJaegeuk Kim pagevec_release(&pvec); 152352681375SJaegeuk Kim cond_resched(); 152452681375SJaegeuk Kim 1525608514deSJaegeuk Kim if (ret || marked) 152652681375SJaegeuk Kim break; 152752681375SJaegeuk Kim } 1528608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1529608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1530608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1531608514deSJaegeuk Kim ino, last_page->index); 1532608514deSJaegeuk Kim lock_page(last_page); 1533d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1534608514deSJaegeuk Kim set_page_dirty(last_page); 1535608514deSJaegeuk Kim unlock_page(last_page); 1536608514deSJaegeuk Kim goto retry; 1537608514deSJaegeuk Kim } 15389de69279SChao Yu out: 1539942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1540b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1541c267ec15SJaegeuk Kim return ret ? -EIO: 0; 154252681375SJaegeuk Kim } 154352681375SJaegeuk Kim 1544401db79fSYunlong Song int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, 1545b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 154652681375SJaegeuk Kim { 154752681375SJaegeuk Kim pgoff_t index, end; 154852681375SJaegeuk Kim struct pagevec pvec; 154952681375SJaegeuk Kim int step = 0; 155012bb0a8fSJaegeuk Kim int nwritten = 0; 15513f5f4959SChao Yu int ret = 0; 1552e05df3b1SJaegeuk Kim 1553e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1554e05df3b1SJaegeuk Kim 1555e05df3b1SJaegeuk Kim next_step: 1556e05df3b1SJaegeuk Kim index = 0; 155780dd9c0eSChao Yu end = ULONG_MAX; 1558e05df3b1SJaegeuk Kim 1559e05df3b1SJaegeuk Kim while (index <= end) { 1560e05df3b1SJaegeuk Kim int i, nr_pages; 15614ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1562e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1563e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1564e05df3b1SJaegeuk Kim if (nr_pages == 0) 1565e05df3b1SJaegeuk Kim break; 1566e05df3b1SJaegeuk Kim 1567e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1568e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1569d68f735bSJaegeuk Kim bool submitted = false; 1570e05df3b1SJaegeuk Kim 15716d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 15726d5a1495SChao Yu pagevec_release(&pvec); 15733f5f4959SChao Yu ret = -EIO; 15743f5f4959SChao Yu goto out; 15756d5a1495SChao Yu } 15766d5a1495SChao Yu 1577e05df3b1SJaegeuk Kim /* 1578e05df3b1SJaegeuk Kim * flushing sequence with step: 1579e05df3b1SJaegeuk Kim * 0. indirect nodes 1580e05df3b1SJaegeuk Kim * 1. dentry dnodes 1581e05df3b1SJaegeuk Kim * 2. file dnodes 1582e05df3b1SJaegeuk Kim */ 1583e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1584e05df3b1SJaegeuk Kim continue; 1585e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1586e05df3b1SJaegeuk Kim is_cold_node(page))) 1587e05df3b1SJaegeuk Kim continue; 1588e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1589e05df3b1SJaegeuk Kim !is_cold_node(page))) 1590e05df3b1SJaegeuk Kim continue; 15919a4cbc9eSChao Yu lock_node: 159252681375SJaegeuk Kim if (!trylock_page(page)) 1593e05df3b1SJaegeuk Kim continue; 1594e05df3b1SJaegeuk Kim 15954ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1596e05df3b1SJaegeuk Kim continue_unlock: 1597e05df3b1SJaegeuk Kim unlock_page(page); 1598e05df3b1SJaegeuk Kim continue; 1599e05df3b1SJaegeuk Kim } 1600e05df3b1SJaegeuk Kim 1601e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1602e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1603e05df3b1SJaegeuk Kim goto continue_unlock; 1604e05df3b1SJaegeuk Kim } 1605e05df3b1SJaegeuk Kim 16062049d4fcSJaegeuk Kim /* flush inline_data */ 160752681375SJaegeuk Kim if (is_inline_node(page)) { 16082049d4fcSJaegeuk Kim clear_inline_node(page); 16092049d4fcSJaegeuk Kim unlock_page(page); 16102049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 16119a4cbc9eSChao Yu goto lock_node; 16122049d4fcSJaegeuk Kim } 16132049d4fcSJaegeuk Kim 1614fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1615fa3d2bdfSJaegeuk Kim 1616fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1617e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1618e05df3b1SJaegeuk Kim goto continue_unlock; 1619e05df3b1SJaegeuk Kim 1620e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1621e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 162252746519SJaegeuk Kim 1623401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 1624b0af6d49SChao Yu wbc, do_balance, io_type); 1625d68f735bSJaegeuk Kim if (ret) 162652746519SJaegeuk Kim unlock_page(page); 1627d68f735bSJaegeuk Kim else if (submitted) 16283f5f4959SChao Yu nwritten++; 1629e05df3b1SJaegeuk Kim 1630e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1631e05df3b1SJaegeuk Kim break; 1632e05df3b1SJaegeuk Kim } 1633e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1634e05df3b1SJaegeuk Kim cond_resched(); 1635e05df3b1SJaegeuk Kim 1636e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1637e05df3b1SJaegeuk Kim step = 2; 1638e05df3b1SJaegeuk Kim break; 1639e05df3b1SJaegeuk Kim } 1640e05df3b1SJaegeuk Kim } 1641e05df3b1SJaegeuk Kim 1642e05df3b1SJaegeuk Kim if (step < 2) { 1643e05df3b1SJaegeuk Kim step++; 1644e05df3b1SJaegeuk Kim goto next_step; 1645e05df3b1SJaegeuk Kim } 16463f5f4959SChao Yu out: 16473f5f4959SChao Yu if (nwritten) 1648b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 16493f5f4959SChao Yu return ret; 1650e05df3b1SJaegeuk Kim } 1651e05df3b1SJaegeuk Kim 1652cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1653cfe58f9dSJaegeuk Kim { 165480dd9c0eSChao Yu pgoff_t index = 0, end = ULONG_MAX; 1655cfe58f9dSJaegeuk Kim struct pagevec pvec; 1656280db3c8SMiklos Szeredi int ret2, ret = 0; 1657cfe58f9dSJaegeuk Kim 1658cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 16594ef51a8fSJaegeuk Kim 16604ef51a8fSJaegeuk Kim while (index <= end) { 16614ef51a8fSJaegeuk Kim int i, nr_pages; 16624ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1663cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 16644ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 16654ef51a8fSJaegeuk Kim if (nr_pages == 0) 16664ef51a8fSJaegeuk Kim break; 1667cfe58f9dSJaegeuk Kim 1668cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1669cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1670cfe58f9dSJaegeuk Kim 1671cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1672cfb271d4SChao Yu if (unlikely(page->index > end)) 1673cfe58f9dSJaegeuk Kim continue; 1674cfe58f9dSJaegeuk Kim 16754bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1676fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1677cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1678cfe58f9dSJaegeuk Kim ret = -EIO; 1679cfe58f9dSJaegeuk Kim } 16804bf08ff6SChao Yu } 1681cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1682cfe58f9dSJaegeuk Kim cond_resched(); 1683cfe58f9dSJaegeuk Kim } 1684cfe58f9dSJaegeuk Kim 1685280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1686cfe58f9dSJaegeuk Kim if (!ret) 1687cfe58f9dSJaegeuk Kim ret = ret2; 1688cfe58f9dSJaegeuk Kim return ret; 1689cfe58f9dSJaegeuk Kim } 1690cfe58f9dSJaegeuk Kim 1691e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1692e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1693e05df3b1SJaegeuk Kim { 16944081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 16959dfa1bafSJaegeuk Kim struct blk_plug plug; 169650c8cdb3SJaegeuk Kim long diff; 1697e05df3b1SJaegeuk Kim 16980771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 16990771fcc7SChao Yu goto skip_write; 17000771fcc7SChao Yu 17014660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 17024660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1703e05df3b1SJaegeuk Kim 1704a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 170587d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1706d3baf95dSJaegeuk Kim goto skip_write; 1707a7fdffbdSJaegeuk Kim 1708d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1709d31c7c3fSYunlei He 171050c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1711fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 17129dfa1bafSJaegeuk Kim blk_start_plug(&plug); 1713b0af6d49SChao Yu sync_node_pages(sbi, wbc, true, FS_NODE_IO); 17149dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 171550c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1716e05df3b1SJaegeuk Kim return 0; 1717d3baf95dSJaegeuk Kim 1718d3baf95dSJaegeuk Kim skip_write: 1719d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1720d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1721d3baf95dSJaegeuk Kim return 0; 1722e05df3b1SJaegeuk Kim } 1723e05df3b1SJaegeuk Kim 1724e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1725e05df3b1SJaegeuk Kim { 172626c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 172726c6b887SJaegeuk Kim 1728237c0790SJaegeuk Kim if (!PageUptodate(page)) 1729e05df3b1SJaegeuk Kim SetPageUptodate(page); 1730e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1731fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 17324081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1733e05df3b1SJaegeuk Kim SetPagePrivate(page); 17349e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1735e05df3b1SJaegeuk Kim return 1; 1736e05df3b1SJaegeuk Kim } 1737e05df3b1SJaegeuk Kim return 0; 1738e05df3b1SJaegeuk Kim } 1739e05df3b1SJaegeuk Kim 17400a8165d7SJaegeuk Kim /* 1741e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1742e05df3b1SJaegeuk Kim */ 1743e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1744e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1745e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1746e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1747487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1748487261f3SChao Yu .releasepage = f2fs_release_page, 17495b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 17505b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 17515b7a487cSWeichao Guo #endif 1752e05df3b1SJaegeuk Kim }; 1753e05df3b1SJaegeuk Kim 17548a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 17558a7ed66aSJaegeuk Kim nid_t n) 1756e05df3b1SJaegeuk Kim { 17578a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 17583aa770a9SNamjae Jeon } 1759e05df3b1SJaegeuk Kim 1760eb0aa4b8SJaegeuk Kim static int __insert_nid_to_list(struct f2fs_sb_info *sbi, 1761eb0aa4b8SJaegeuk Kim struct free_nid *i, enum nid_list list, bool new) 1762e05df3b1SJaegeuk Kim { 1763b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1764b8559dc2SChao Yu 1765eb0aa4b8SJaegeuk Kim if (new) { 1766eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1767eb0aa4b8SJaegeuk Kim if (err) 1768eb0aa4b8SJaegeuk Kim return err; 1769eb0aa4b8SJaegeuk Kim } 1770eb0aa4b8SJaegeuk Kim 1771b8559dc2SChao Yu f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW : 1772b8559dc2SChao Yu i->state != NID_ALLOC); 1773b8559dc2SChao Yu nm_i->nid_cnt[list]++; 1774b8559dc2SChao Yu list_add_tail(&i->list, &nm_i->nid_list[list]); 1775eb0aa4b8SJaegeuk Kim return 0; 1776b8559dc2SChao Yu } 1777b8559dc2SChao Yu 1778b8559dc2SChao Yu static void __remove_nid_from_list(struct f2fs_sb_info *sbi, 1779eb0aa4b8SJaegeuk Kim struct free_nid *i, enum nid_list list, bool reuse) 1780b8559dc2SChao Yu { 1781b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1782b8559dc2SChao Yu 1783b8559dc2SChao Yu f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW : 1784b8559dc2SChao Yu i->state != NID_ALLOC); 1785b8559dc2SChao Yu nm_i->nid_cnt[list]--; 1786e05df3b1SJaegeuk Kim list_del(&i->list); 1787eb0aa4b8SJaegeuk Kim if (!reuse) 17888a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1789e05df3b1SJaegeuk Kim } 1790e05df3b1SJaegeuk Kim 17914ac91242SChao Yu /* return if the nid is recognized as free */ 17924ac91242SChao Yu static bool add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1793e05df3b1SJaegeuk Kim { 17946fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 179530a61ddfSChao Yu struct free_nid *i, *e; 179659bbd474SJaegeuk Kim struct nat_entry *ne; 179730a61ddfSChao Yu int err = -EINVAL; 179830a61ddfSChao Yu bool ret = false; 17999198acebSJaegeuk Kim 18009198acebSJaegeuk Kim /* 0 nid should not be used */ 1801cfb271d4SChao Yu if (unlikely(nid == 0)) 18024ac91242SChao Yu return false; 180359bbd474SJaegeuk Kim 18047bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1805e05df3b1SJaegeuk Kim i->nid = nid; 1806e05df3b1SJaegeuk Kim i->state = NID_NEW; 1807e05df3b1SJaegeuk Kim 180830a61ddfSChao Yu if (radix_tree_preload(GFP_NOFS)) 180930a61ddfSChao Yu goto err; 1810769ec6e5SJaegeuk Kim 1811b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 181230a61ddfSChao Yu 181330a61ddfSChao Yu if (build) { 181430a61ddfSChao Yu /* 181530a61ddfSChao Yu * Thread A Thread B 181630a61ddfSChao Yu * - f2fs_create 181730a61ddfSChao Yu * - f2fs_new_inode 181830a61ddfSChao Yu * - alloc_nid 181930a61ddfSChao Yu * - __insert_nid_to_list(ALLOC_NID_LIST) 182030a61ddfSChao Yu * - f2fs_balance_fs_bg 182130a61ddfSChao Yu * - build_free_nids 182230a61ddfSChao Yu * - __build_free_nids 182330a61ddfSChao Yu * - scan_nat_page 182430a61ddfSChao Yu * - add_free_nid 182530a61ddfSChao Yu * - __lookup_nat_cache 182630a61ddfSChao Yu * - f2fs_add_link 182730a61ddfSChao Yu * - init_inode_metadata 182830a61ddfSChao Yu * - new_inode_page 182930a61ddfSChao Yu * - new_node_page 183030a61ddfSChao Yu * - set_node_addr 183130a61ddfSChao Yu * - alloc_nid_done 183230a61ddfSChao Yu * - __remove_nid_from_list(ALLOC_NID_LIST) 183330a61ddfSChao Yu * - __insert_nid_to_list(FREE_NID_LIST) 183430a61ddfSChao Yu */ 183530a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 183630a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 183730a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 183830a61ddfSChao Yu goto err_out; 183930a61ddfSChao Yu 184030a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 184130a61ddfSChao Yu if (e) { 184230a61ddfSChao Yu if (e->state == NID_NEW) 184330a61ddfSChao Yu ret = true; 184430a61ddfSChao Yu goto err_out; 184530a61ddfSChao Yu } 184630a61ddfSChao Yu } 184730a61ddfSChao Yu ret = true; 1848eb0aa4b8SJaegeuk Kim err = __insert_nid_to_list(sbi, i, FREE_NID_LIST, true); 184930a61ddfSChao Yu err_out: 1850b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1851769ec6e5SJaegeuk Kim radix_tree_preload_end(); 185230a61ddfSChao Yu err: 185330a61ddfSChao Yu if (err) 1854e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 185530a61ddfSChao Yu return ret; 1856e05df3b1SJaegeuk Kim } 1857e05df3b1SJaegeuk Kim 1858b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 1859e05df3b1SJaegeuk Kim { 1860b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1861e05df3b1SJaegeuk Kim struct free_nid *i; 1862cf0ee0f0SChao Yu bool need_free = false; 1863cf0ee0f0SChao Yu 1864b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 18658a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1866e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 1867eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); 1868cf0ee0f0SChao Yu need_free = true; 1869e05df3b1SJaegeuk Kim } 1870b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1871cf0ee0f0SChao Yu 1872cf0ee0f0SChao Yu if (need_free) 1873cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1874e05df3b1SJaegeuk Kim } 1875e05df3b1SJaegeuk Kim 18769f7e4a2cSJaegeuk Kim static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 1877346fe752SChao Yu bool set, bool build) 18784ac91242SChao Yu { 18794ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 18804ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 18814ac91242SChao Yu unsigned int nid_ofs = nid - START_NID(nid); 18824ac91242SChao Yu 18834ac91242SChao Yu if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 18844ac91242SChao Yu return; 18854ac91242SChao Yu 18864ac91242SChao Yu if (set) 188723380b85SJaegeuk Kim __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18884ac91242SChao Yu else 188923380b85SJaegeuk Kim __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 1890586d1492SChao Yu 1891586d1492SChao Yu if (set) 1892586d1492SChao Yu nm_i->free_nid_count[nat_ofs]++; 1893586d1492SChao Yu else if (!build) 1894586d1492SChao Yu nm_i->free_nid_count[nat_ofs]--; 18954ac91242SChao Yu } 18964ac91242SChao Yu 18976fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1898e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1899e05df3b1SJaegeuk Kim { 19006fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1901e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1902e05df3b1SJaegeuk Kim block_t blk_addr; 19034ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 1904e05df3b1SJaegeuk Kim int i; 1905e05df3b1SJaegeuk Kim 1906586d1492SChao Yu if (test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 1907586d1492SChao Yu return; 1908586d1492SChao Yu 190923380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 19104ac91242SChao Yu 1911e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1912e05df3b1SJaegeuk Kim 1913e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 19144ac91242SChao Yu bool freed = false; 191523d38844SHaicheng Li 1916cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 191704431c44SJaegeuk Kim break; 191823d38844SHaicheng Li 1919e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 19209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 19213a2ad567SChao Yu if (blk_addr == NULL_ADDR) 19224ac91242SChao Yu freed = add_free_nid(sbi, start_nid, true); 1923346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 1924346fe752SChao Yu update_free_nid_bitmap(sbi, start_nid, freed, true); 1925346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 1926e05df3b1SJaegeuk Kim } 1927e05df3b1SJaegeuk Kim } 1928e05df3b1SJaegeuk Kim 19294ac91242SChao Yu static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 19304ac91242SChao Yu { 19314ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 19324ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 19334ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 19344ac91242SChao Yu unsigned int i, idx; 19354ac91242SChao Yu 19364ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 19374ac91242SChao Yu 19384ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 19394ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 19404ac91242SChao Yu continue; 1941586d1492SChao Yu if (!nm_i->free_nid_count[i]) 1942586d1492SChao Yu continue; 19434ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 19444ac91242SChao Yu nid_t nid; 19454ac91242SChao Yu 19464ac91242SChao Yu if (!test_bit_le(idx, nm_i->free_nid_bitmap[i])) 19474ac91242SChao Yu continue; 19484ac91242SChao Yu 19494ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 19504ac91242SChao Yu add_free_nid(sbi, nid, true); 19514ac91242SChao Yu 1952f0cdbfe6SKinglong Mee if (nm_i->nid_cnt[FREE_NID_LIST] >= MAX_FREE_NIDS) 19534ac91242SChao Yu goto out; 19544ac91242SChao Yu } 19554ac91242SChao Yu } 19564ac91242SChao Yu out: 19574ac91242SChao Yu down_read(&curseg->journal_rwsem); 19584ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 19594ac91242SChao Yu block_t addr; 19604ac91242SChao Yu nid_t nid; 19614ac91242SChao Yu 19624ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 19634ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 19644ac91242SChao Yu if (addr == NULL_ADDR) 19654ac91242SChao Yu add_free_nid(sbi, nid, true); 19664ac91242SChao Yu else 19674ac91242SChao Yu remove_free_nid(sbi, nid); 19684ac91242SChao Yu } 19694ac91242SChao Yu up_read(&curseg->journal_rwsem); 19704ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 19714ac91242SChao Yu } 19724ac91242SChao Yu 197322ad0b6aSJaegeuk Kim static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 1974e05df3b1SJaegeuk Kim { 1975e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1976e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1977b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 19788760952dSHaicheng Li int i = 0; 197955008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1980e05df3b1SJaegeuk Kim 1981e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 1982e9cdd307SYunlei He nid = 0; 1983e9cdd307SYunlei He 198455008d84SJaegeuk Kim /* Enough entries */ 1985b8559dc2SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST] >= NAT_ENTRY_PER_BLOCK) 198655008d84SJaegeuk Kim return; 1987e05df3b1SJaegeuk Kim 19883a2ad567SChao Yu if (!sync && !available_free_memory(sbi, FREE_NIDS)) 1989e05df3b1SJaegeuk Kim return; 1990e05df3b1SJaegeuk Kim 19914ac91242SChao Yu if (!mount) { 19924ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 19934ac91242SChao Yu scan_free_nid_bits(sbi); 19944ac91242SChao Yu 19954ac91242SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST]) 199622ad0b6aSJaegeuk Kim return; 199722ad0b6aSJaegeuk Kim } 199822ad0b6aSJaegeuk Kim 199955008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 200026879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 200126879fb1SChao Yu META_NAT, true); 2002e05df3b1SJaegeuk Kim 2003b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2004a5131193SJaegeuk Kim 2005e05df3b1SJaegeuk Kim while (1) { 2006e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2007e05df3b1SJaegeuk Kim 20086fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 2009e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2010e05df3b1SJaegeuk Kim 2011e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2012cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2013e05df3b1SJaegeuk Kim nid = 0; 201455008d84SJaegeuk Kim 2015a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2016e05df3b1SJaegeuk Kim break; 2017e05df3b1SJaegeuk Kim } 2018e05df3b1SJaegeuk Kim 201955008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 202055008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2021e05df3b1SJaegeuk Kim 2022e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 2023b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 2024dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2025dfc08a12SChao Yu block_t addr; 2026dfc08a12SChao Yu 2027dfc08a12SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 2028dfc08a12SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 2029e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 20306fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 2031e05df3b1SJaegeuk Kim else 2032b8559dc2SChao Yu remove_free_nid(sbi, nid); 2033e05df3b1SJaegeuk Kim } 2034b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 2035b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 20362db2388fSChao Yu 20372db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2038ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2039e05df3b1SJaegeuk Kim } 2040e05df3b1SJaegeuk Kim 204122ad0b6aSJaegeuk Kim void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 20422411cf5bSChao Yu { 20432411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 204422ad0b6aSJaegeuk Kim __build_free_nids(sbi, sync, mount); 20452411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 20462411cf5bSChao Yu } 20472411cf5bSChao Yu 2048e05df3b1SJaegeuk Kim /* 2049e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2050e05df3b1SJaegeuk Kim * from second parameter of this function. 2051e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2052e05df3b1SJaegeuk Kim */ 2053e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2054e05df3b1SJaegeuk Kim { 2055e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2056e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2057e05df3b1SJaegeuk Kim retry: 2058cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 205955523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 206055523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2061cb78942bSJaegeuk Kim return false; 206255523519SChao Yu } 2063cb78942bSJaegeuk Kim #endif 2064b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2065e05df3b1SJaegeuk Kim 206604d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 206704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 206804d47e67SChao Yu return false; 206904d47e67SChao Yu } 2070e05df3b1SJaegeuk Kim 207155008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 2072b8559dc2SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST] && !on_build_free_nids(nm_i)) { 2073b8559dc2SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->nid_list[FREE_NID_LIST])); 2074b8559dc2SChao Yu i = list_first_entry(&nm_i->nid_list[FREE_NID_LIST], 2075b8559dc2SChao Yu struct free_nid, list); 2076e05df3b1SJaegeuk Kim *nid = i->nid; 2077b8559dc2SChao Yu 2078eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, true); 2079e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 2080eb0aa4b8SJaegeuk Kim __insert_nid_to_list(sbi, i, ALLOC_NID_LIST, false); 208104d47e67SChao Yu nm_i->available_nids--; 20824ac91242SChao Yu 2083346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 20844ac91242SChao Yu 2085b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2086e05df3b1SJaegeuk Kim return true; 2087e05df3b1SJaegeuk Kim } 2088b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 208955008d84SJaegeuk Kim 209055008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 209122ad0b6aSJaegeuk Kim build_free_nids(sbi, true, false); 209255008d84SJaegeuk Kim goto retry; 209355008d84SJaegeuk Kim } 2094e05df3b1SJaegeuk Kim 20950a8165d7SJaegeuk Kim /* 2096e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2097e05df3b1SJaegeuk Kim */ 2098e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2099e05df3b1SJaegeuk Kim { 2100e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2101e05df3b1SJaegeuk Kim struct free_nid *i; 2102e05df3b1SJaegeuk Kim 2103b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21048a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2105b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2106eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false); 2107b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2108cf0ee0f0SChao Yu 2109cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2110e05df3b1SJaegeuk Kim } 2111e05df3b1SJaegeuk Kim 21120a8165d7SJaegeuk Kim /* 2113e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2114e05df3b1SJaegeuk Kim */ 2115e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2116e05df3b1SJaegeuk Kim { 211749952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 211849952fa1SJaegeuk Kim struct free_nid *i; 2119cf0ee0f0SChao Yu bool need_free = false; 212049952fa1SJaegeuk Kim 212165985d93SJaegeuk Kim if (!nid) 212265985d93SJaegeuk Kim return; 212365985d93SJaegeuk 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); 2127b8559dc2SChao Yu 21286fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 2129eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false); 2130cf0ee0f0SChao Yu need_free = true; 213195630cbaSHaicheng Li } else { 2132eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, true); 213349952fa1SJaegeuk Kim i->state = NID_NEW; 2134eb0aa4b8SJaegeuk Kim __insert_nid_to_list(sbi, i, FREE_NID_LIST, false); 213595630cbaSHaicheng Li } 213604d47e67SChao Yu 213704d47e67SChao Yu nm_i->available_nids++; 213804d47e67SChao Yu 2139346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 21404ac91242SChao Yu 2141b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2142cf0ee0f0SChao Yu 2143cf0ee0f0SChao Yu if (need_free) 2144cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2145e05df3b1SJaegeuk Kim } 2146e05df3b1SJaegeuk Kim 214731696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 214831696580SChao Yu { 214931696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 215031696580SChao Yu struct free_nid *i, *next; 215131696580SChao Yu int nr = nr_shrink; 215231696580SChao Yu 2153b8559dc2SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS) 2154ad4edb83SJaegeuk Kim return 0; 2155ad4edb83SJaegeuk Kim 215631696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 215731696580SChao Yu return 0; 215831696580SChao Yu 2159b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2160b8559dc2SChao Yu list_for_each_entry_safe(i, next, &nm_i->nid_list[FREE_NID_LIST], 2161b8559dc2SChao Yu list) { 2162b8559dc2SChao Yu if (nr_shrink <= 0 || 2163b8559dc2SChao Yu nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS) 216431696580SChao Yu break; 2165b8559dc2SChao Yu 2166eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); 216731696580SChao Yu kmem_cache_free(free_nid_slab, i); 216831696580SChao Yu nr_shrink--; 216931696580SChao Yu } 2170b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 217131696580SChao Yu mutex_unlock(&nm_i->build_lock); 217231696580SChao Yu 217331696580SChao Yu return nr - nr_shrink; 217431696580SChao Yu } 217531696580SChao Yu 217670cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 217728cdce04SChao Yu { 217828cdce04SChao Yu void *src_addr, *dst_addr; 217928cdce04SChao Yu size_t inline_size; 218028cdce04SChao Yu struct page *ipage; 218128cdce04SChao Yu struct f2fs_inode *ri; 218228cdce04SChao Yu 21834081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 21849850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 218528cdce04SChao Yu 2186e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 2187e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 218891942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2189e3b4d43fSJaegeuk Kim goto update_inode; 2190e3b4d43fSJaegeuk Kim } 2191e3b4d43fSJaegeuk Kim 219228cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 219328cdce04SChao Yu src_addr = inline_xattr_addr(page); 219428cdce04SChao Yu inline_size = inline_xattr_size(inode); 219528cdce04SChao Yu 2196fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 219728cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2198e3b4d43fSJaegeuk Kim update_inode: 219928cdce04SChao Yu update_inode(inode, ipage); 220028cdce04SChao Yu f2fs_put_page(ipage, 1); 220128cdce04SChao Yu } 220228cdce04SChao Yu 2203d260081cSChao Yu int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 2204abb2366cSJaegeuk Kim { 22054081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2206abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 220787905682SYunlei He nid_t new_xnid; 220887905682SYunlei He struct dnode_of_data dn; 2209abb2366cSJaegeuk Kim struct node_info ni; 2210d260081cSChao Yu struct page *xpage; 2211abb2366cSJaegeuk Kim 2212abb2366cSJaegeuk Kim if (!prev_xnid) 2213abb2366cSJaegeuk Kim goto recover_xnid; 2214abb2366cSJaegeuk Kim 2215d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2216abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 22179850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 2218abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 2219000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2220479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2221abb2366cSJaegeuk Kim 2222abb2366cSJaegeuk Kim recover_xnid: 2223d260081cSChao Yu /* 2: update xattr nid in inode */ 222487905682SYunlei He if (!alloc_nid(sbi, &new_xnid)) 222587905682SYunlei He return -ENOSPC; 222687905682SYunlei He 222787905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 222887905682SYunlei He xpage = new_node_page(&dn, XATTR_NODE_OFFSET); 222987905682SYunlei He if (IS_ERR(xpage)) { 223087905682SYunlei He alloc_nid_failed(sbi, new_xnid); 223187905682SYunlei He return PTR_ERR(xpage); 223287905682SYunlei He } 223387905682SYunlei He 223487905682SYunlei He alloc_nid_done(sbi, new_xnid); 2235d260081cSChao Yu update_inode_page(inode); 2236abb2366cSJaegeuk Kim 2237d260081cSChao Yu /* 3: update and set xattr node page dirty */ 223887905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2239d260081cSChao Yu 2240d260081cSChao Yu set_page_dirty(xpage); 2241d260081cSChao Yu f2fs_put_page(xpage, 1); 2242abb2366cSJaegeuk Kim 2243d260081cSChao Yu return 0; 2244abb2366cSJaegeuk Kim } 2245abb2366cSJaegeuk Kim 2246e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2247e05df3b1SJaegeuk Kim { 224858bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2249e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2250e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2251e05df3b1SJaegeuk Kim struct page *ipage; 2252e05df3b1SJaegeuk Kim 2253e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2254e8271fa3SJaegeuk Kim 2255e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2256e8271fa3SJaegeuk Kim return -EINVAL; 2257e8ea9b3dSJaegeuk Kim retry: 2258300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2259e8ea9b3dSJaegeuk Kim if (!ipage) { 2260e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2261e8ea9b3dSJaegeuk Kim goto retry; 2262e8ea9b3dSJaegeuk Kim } 2263e05df3b1SJaegeuk Kim 2264e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2265b8559dc2SChao Yu remove_free_nid(sbi, ino); 2266e05df3b1SJaegeuk Kim 2267237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2268e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2269e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2270e05df3b1SJaegeuk Kim 227158bfaf44SJaegeuk Kim src = F2FS_INODE(page); 227258bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2273e05df3b1SJaegeuk Kim 227458bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 227558bfaf44SJaegeuk Kim dst->i_size = 0; 227658bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 227758bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 227858bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 22797a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 22805c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 22817a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 22825c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 22835c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 22845c57132eSChao Yu i_projid)) 22855c57132eSChao Yu dst->i_projid = src->i_projid; 2286704956ecSChao Yu 2287704956ecSChao Yu f2fs_inode_chksum_set(sbi, ipage); 22885c57132eSChao Yu } 2289e05df3b1SJaegeuk Kim 2290e05df3b1SJaegeuk Kim new_ni = old_ni; 2291e05df3b1SJaegeuk Kim new_ni.ino = ino; 2292e05df3b1SJaegeuk Kim 22930abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 229465e5cd0aSJaegeuk Kim WARN_ON(1); 2295479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2296e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2297617deb8cSJaegeuk Kim set_page_dirty(ipage); 2298e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2299e05df3b1SJaegeuk Kim return 0; 2300e05df3b1SJaegeuk Kim } 2301e05df3b1SJaegeuk Kim 2302e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 2303e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2304e05df3b1SJaegeuk Kim { 2305e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2306e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2307e05df3b1SJaegeuk Kim block_t addr; 23089ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2309e05df3b1SJaegeuk Kim 2310e05df3b1SJaegeuk Kim /* scan the node segment */ 2311e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2312e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2313e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2314e05df3b1SJaegeuk Kim 23159ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2316664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2317393ff91fSJaegeuk Kim 23189af0ff1cSChao Yu /* readahead node pages */ 231926879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 23209af0ff1cSChao Yu 23219ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 23222b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2323393ff91fSJaegeuk Kim 23249ecf4b80SChao Yu rn = F2FS_NODE(page); 2325393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2326393ff91fSJaegeuk Kim sum_entry->version = 0; 2327393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 23289af0ff1cSChao Yu sum_entry++; 23299ecf4b80SChao Yu f2fs_put_page(page, 1); 23309af0ff1cSChao Yu } 2331bac4eef6SChao Yu 23329ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2333bac4eef6SChao Yu addr + nrpages); 23349af0ff1cSChao Yu } 23359ecf4b80SChao Yu return 0; 2336e05df3b1SJaegeuk Kim } 2337e05df3b1SJaegeuk Kim 2338aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2339e05df3b1SJaegeuk Kim { 2340e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2341e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2342b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2343e05df3b1SJaegeuk Kim int i; 2344e05df3b1SJaegeuk Kim 2345b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2346dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2347e05df3b1SJaegeuk Kim struct nat_entry *ne; 2348e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2349dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2350e05df3b1SJaegeuk Kim 2351dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 23529be32d72SJaegeuk Kim 2353e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2354e05df3b1SJaegeuk Kim if (!ne) { 23555c9e4184SChao Yu ne = grab_nat_entry(nm_i, nid, true); 235694dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 23579be32d72SJaegeuk Kim } 235804d47e67SChao Yu 235904d47e67SChao Yu /* 236004d47e67SChao Yu * if a free nat in journal has not been used after last 236104d47e67SChao Yu * checkpoint, we should remove it from available nids, 236204d47e67SChao Yu * since later we will add it again. 236304d47e67SChao Yu */ 236404d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 236504d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 236604d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 236704d47e67SChao Yu nm_i->available_nids--; 236804d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 236904d47e67SChao Yu } 237004d47e67SChao Yu 2371e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2372e05df3b1SJaegeuk Kim } 2373dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2374b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2375e05df3b1SJaegeuk Kim } 2376e05df3b1SJaegeuk Kim 2377309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2378309cc2b6SJaegeuk Kim struct list_head *head, int max) 2379e05df3b1SJaegeuk Kim { 2380309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2381e05df3b1SJaegeuk Kim 2382309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2383309cc2b6SJaegeuk Kim goto add_out; 2384e05df3b1SJaegeuk Kim 2385309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2386309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2387309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2388309cc2b6SJaegeuk Kim return; 2389309cc2b6SJaegeuk Kim } 2390309cc2b6SJaegeuk Kim } 2391309cc2b6SJaegeuk Kim add_out: 2392309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2393aec71382SChao Yu } 2394aec71382SChao Yu 23959f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 239622ad0b6aSJaegeuk Kim struct page *page) 239722ad0b6aSJaegeuk Kim { 239822ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 239922ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 240022ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 240122ad0b6aSJaegeuk Kim int valid = 0; 240222ad0b6aSJaegeuk Kim int i; 240322ad0b6aSJaegeuk Kim 240422ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 240522ad0b6aSJaegeuk Kim return; 240622ad0b6aSJaegeuk Kim 240722ad0b6aSJaegeuk Kim for (i = 0; i < NAT_ENTRY_PER_BLOCK; i++) { 240822ad0b6aSJaegeuk Kim if (start_nid == 0 && i == 0) 240922ad0b6aSJaegeuk Kim valid++; 241022ad0b6aSJaegeuk Kim if (nat_blk->entries[i].block_addr) 241122ad0b6aSJaegeuk Kim valid++; 241222ad0b6aSJaegeuk Kim } 241322ad0b6aSJaegeuk Kim if (valid == 0) { 241423380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 241523380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 241622ad0b6aSJaegeuk Kim return; 241722ad0b6aSJaegeuk Kim } 241822ad0b6aSJaegeuk Kim 241923380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 242022ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 242123380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 242222ad0b6aSJaegeuk Kim else 242323380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 242422ad0b6aSJaegeuk Kim } 242522ad0b6aSJaegeuk Kim 2426309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 242722ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2428309cc2b6SJaegeuk Kim { 2429309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2430b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2431309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2432309cc2b6SJaegeuk Kim bool to_journal = true; 2433309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2434309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2435309cc2b6SJaegeuk Kim struct page *page = NULL; 2436aec71382SChao Yu 2437aec71382SChao Yu /* 2438aec71382SChao Yu * there are two steps to flush nat entries: 2439aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2440aec71382SChao Yu * #2, flush nat entries to nat page. 2441aec71382SChao Yu */ 244222ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 244322ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2444aec71382SChao Yu to_journal = false; 2445aec71382SChao Yu 2446aec71382SChao Yu if (to_journal) { 2447b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2448aec71382SChao Yu } else { 2449e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2450e05df3b1SJaegeuk Kim nat_blk = page_address(page); 24519850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2452e05df3b1SJaegeuk Kim } 2453e05df3b1SJaegeuk Kim 2454aec71382SChao Yu /* flush dirty nats in nat entry set */ 2455309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2456aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2457aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2458aec71382SChao Yu int offset; 2459aec71382SChao Yu 2460febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2461309cc2b6SJaegeuk Kim 2462aec71382SChao Yu if (to_journal) { 2463dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2464aec71382SChao Yu NAT_JOURNAL, nid, 1); 24659850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2466dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2467dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2468aec71382SChao Yu } else { 2469aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2470aec71382SChao Yu } 2471aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 247288bd02c9SJaegeuk Kim nat_reset_flag(ne); 24730b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 247404d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 2475309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 247604d47e67SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 247704d47e67SChao Yu NM_I(sbi)->available_nids++; 2478346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 24794ac91242SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 24804ac91242SChao Yu } else { 24814ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2482346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 248304d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 248404d47e67SChao Yu } 2485e05df3b1SJaegeuk Kim } 2486aec71382SChao Yu 248722ad0b6aSJaegeuk Kim if (to_journal) { 2488b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 248922ad0b6aSJaegeuk Kim } else { 249022ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2491e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 249222ad0b6aSJaegeuk Kim } 2493aec71382SChao Yu 249459c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 249559c9081bSYunlei He if (!set->entry_cnt) { 2496309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2497309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2498309cc2b6SJaegeuk Kim } 249959c9081bSYunlei He } 2500aec71382SChao Yu 2501309cc2b6SJaegeuk Kim /* 2502309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2503309cc2b6SJaegeuk Kim */ 250422ad0b6aSJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2505309cc2b6SJaegeuk Kim { 2506309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2507309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2508b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 25097aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2510309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2511309cc2b6SJaegeuk Kim unsigned int found; 2512309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2513309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2514309cc2b6SJaegeuk Kim 251520d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 251620d047c8SChangman Lee return; 2517a5131193SJaegeuk Kim 2518b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2519a5131193SJaegeuk Kim 2520309cc2b6SJaegeuk Kim /* 2521309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2522309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2523309cc2b6SJaegeuk Kim * into nat entry set. 2524309cc2b6SJaegeuk Kim */ 2525900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 252622ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2527309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2528309cc2b6SJaegeuk Kim 2529309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 25307aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2531309cc2b6SJaegeuk Kim unsigned idx; 2532309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2533309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2534309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2535dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2536309cc2b6SJaegeuk Kim } 2537309cc2b6SJaegeuk Kim 2538309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2539309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 254022ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2541309cc2b6SJaegeuk Kim 2542b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 254359c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2544e05df3b1SJaegeuk Kim } 2545e05df3b1SJaegeuk Kim 254622ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 254722ad0b6aSJaegeuk Kim { 254822ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 254922ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 255022ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 255122ad0b6aSJaegeuk Kim unsigned int i; 255222ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 255322ad0b6aSJaegeuk Kim block_t nat_bits_addr; 255422ad0b6aSJaegeuk Kim 255522ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 255622ad0b6aSJaegeuk Kim return 0; 255722ad0b6aSJaegeuk Kim 255822ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + 255922ad0b6aSJaegeuk Kim F2FS_BLKSIZE - 1); 256022ad0b6aSJaegeuk Kim nm_i->nat_bits = kzalloc(nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, 256122ad0b6aSJaegeuk Kim GFP_KERNEL); 256222ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 256322ad0b6aSJaegeuk Kim return -ENOMEM; 256422ad0b6aSJaegeuk Kim 256522ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 256622ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 256722ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 256822ad0b6aSJaegeuk Kim struct page *page = get_meta_page(sbi, nat_bits_addr++); 256922ad0b6aSJaegeuk Kim 257022ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 257122ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 257222ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 257322ad0b6aSJaegeuk Kim } 257422ad0b6aSJaegeuk Kim 2575ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 257622ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 257722ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 257822ad0b6aSJaegeuk Kim return 0; 257922ad0b6aSJaegeuk Kim } 258022ad0b6aSJaegeuk Kim 258122ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 258222ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 258322ad0b6aSJaegeuk Kim 258422ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 258522ad0b6aSJaegeuk Kim return 0; 258622ad0b6aSJaegeuk Kim } 258722ad0b6aSJaegeuk Kim 2588bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 25897041d5d2SChao Yu { 25907041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 25917041d5d2SChao Yu unsigned int i = 0; 25927041d5d2SChao Yu nid_t nid, last_nid; 25937041d5d2SChao Yu 25947041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 25957041d5d2SChao Yu return; 25967041d5d2SChao Yu 25977041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 25987041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 25997041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26007041d5d2SChao Yu break; 26017041d5d2SChao Yu 26027041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26037041d5d2SChao Yu 26047041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 26057041d5d2SChao Yu last_nid = (i + 1) * NAT_ENTRY_PER_BLOCK; 26067041d5d2SChao Yu 2607346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 26087041d5d2SChao Yu for (; nid < last_nid; nid++) 2609346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2610346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 26117041d5d2SChao Yu } 26127041d5d2SChao Yu 26137041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26147041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 26157041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26167041d5d2SChao Yu break; 26177041d5d2SChao Yu 26187041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26197041d5d2SChao Yu } 26207041d5d2SChao Yu } 26217041d5d2SChao Yu 2622e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2623e05df3b1SJaegeuk Kim { 2624e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2625e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2626e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 262722ad0b6aSJaegeuk Kim unsigned int nat_segs; 262822ad0b6aSJaegeuk Kim int err; 2629e05df3b1SJaegeuk Kim 2630e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2631e05df3b1SJaegeuk Kim 2632e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2633e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 263422ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 263522ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 26367ee0eeabSJaegeuk Kim 2637b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 263804d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 263904d47e67SChao Yu F2FS_RESERVED_NODE_NUM; 2640b8559dc2SChao Yu nm_i->nid_cnt[FREE_NID_LIST] = 0; 2641b8559dc2SChao Yu nm_i->nid_cnt[ALLOC_NID_LIST] = 0; 2642e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2643cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2644ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 26452304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2646e05df3b1SJaegeuk Kim 26478a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2648b8559dc2SChao Yu INIT_LIST_HEAD(&nm_i->nid_list[FREE_NID_LIST]); 2649b8559dc2SChao Yu INIT_LIST_HEAD(&nm_i->nid_list[ALLOC_NID_LIST]); 2650769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2651769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2652e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2653e05df3b1SJaegeuk Kim 2654e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2655b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2656b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2657e05df3b1SJaegeuk Kim 2658e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 265979b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2660e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2661e05df3b1SJaegeuk Kim if (!version_bitmap) 2662e05df3b1SJaegeuk Kim return -EFAULT; 2663e05df3b1SJaegeuk Kim 266479b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 266579b5793bSAlexandru Gheorghiu GFP_KERNEL); 266679b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 266779b5793bSAlexandru Gheorghiu return -ENOMEM; 2668599a09b2SChao Yu 266922ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 267022ad0b6aSJaegeuk Kim if (err) 267122ad0b6aSJaegeuk Kim return err; 267222ad0b6aSJaegeuk Kim 2673599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2674599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2675599a09b2SChao Yu GFP_KERNEL); 2676599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2677599a09b2SChao Yu return -ENOMEM; 2678599a09b2SChao Yu #endif 2679599a09b2SChao Yu 2680e05df3b1SJaegeuk Kim return 0; 2681e05df3b1SJaegeuk Kim } 2682e05df3b1SJaegeuk Kim 26839f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 26844ac91242SChao Yu { 26854ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 26864ac91242SChao Yu 2687a7c3e901SMichal Hocko nm_i->free_nid_bitmap = kvzalloc(nm_i->nat_blocks * 26884ac91242SChao Yu NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL); 26894ac91242SChao Yu if (!nm_i->free_nid_bitmap) 26904ac91242SChao Yu return -ENOMEM; 26914ac91242SChao Yu 2692a7c3e901SMichal Hocko nm_i->nat_block_bitmap = kvzalloc(nm_i->nat_blocks / 8, 26934ac91242SChao Yu GFP_KERNEL); 26944ac91242SChao Yu if (!nm_i->nat_block_bitmap) 26954ac91242SChao Yu return -ENOMEM; 2696586d1492SChao Yu 2697a7c3e901SMichal Hocko nm_i->free_nid_count = kvzalloc(nm_i->nat_blocks * 2698586d1492SChao Yu sizeof(unsigned short), GFP_KERNEL); 2699586d1492SChao Yu if (!nm_i->free_nid_count) 2700586d1492SChao Yu return -ENOMEM; 27014ac91242SChao Yu return 0; 27024ac91242SChao Yu } 27034ac91242SChao Yu 2704e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2705e05df3b1SJaegeuk Kim { 2706e05df3b1SJaegeuk Kim int err; 2707e05df3b1SJaegeuk Kim 2708e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2709e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2710e05df3b1SJaegeuk Kim return -ENOMEM; 2711e05df3b1SJaegeuk Kim 2712e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2713e05df3b1SJaegeuk Kim if (err) 2714e05df3b1SJaegeuk Kim return err; 2715e05df3b1SJaegeuk Kim 27164ac91242SChao Yu err = init_free_nid_cache(sbi); 27174ac91242SChao Yu if (err) 27184ac91242SChao Yu return err; 27194ac91242SChao Yu 27207041d5d2SChao Yu /* load free nid status from nat_bits table */ 27217041d5d2SChao Yu load_free_nid_bitmap(sbi); 27227041d5d2SChao Yu 272322ad0b6aSJaegeuk Kim build_free_nids(sbi, true, true); 2724e05df3b1SJaegeuk Kim return 0; 2725e05df3b1SJaegeuk Kim } 2726e05df3b1SJaegeuk Kim 2727e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2728e05df3b1SJaegeuk Kim { 2729e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2730e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2731e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 27327aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2733e05df3b1SJaegeuk Kim nid_t nid = 0; 2734e05df3b1SJaegeuk Kim unsigned int found; 2735e05df3b1SJaegeuk Kim 2736e05df3b1SJaegeuk Kim if (!nm_i) 2737e05df3b1SJaegeuk Kim return; 2738e05df3b1SJaegeuk Kim 2739e05df3b1SJaegeuk Kim /* destroy free nid list */ 2740b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2741b8559dc2SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->nid_list[FREE_NID_LIST], 2742b8559dc2SChao Yu list) { 2743eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); 2744b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2745cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2746b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2747e05df3b1SJaegeuk Kim } 2748b8559dc2SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID_LIST]); 2749b8559dc2SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[ALLOC_NID_LIST]); 2750b8559dc2SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->nid_list[ALLOC_NID_LIST])); 2751b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2752e05df3b1SJaegeuk Kim 2753e05df3b1SJaegeuk Kim /* destroy nat cache */ 2754b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2755e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2756e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2757e05df3b1SJaegeuk Kim unsigned idx; 27587aed0d45SJaegeuk Kim 2759b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2760b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2761b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2762e05df3b1SJaegeuk Kim } 27639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 27647aed0d45SJaegeuk Kim 27657aed0d45SJaegeuk Kim /* destroy nat set cache */ 27667aed0d45SJaegeuk Kim nid = 0; 27677aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 27687aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 27697aed0d45SJaegeuk Kim unsigned idx; 27707aed0d45SJaegeuk Kim 27717aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 27727aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 27737aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 27747aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 27757aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 27767aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 27777aed0d45SJaegeuk Kim } 27787aed0d45SJaegeuk Kim } 2779b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2780e05df3b1SJaegeuk Kim 27814ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 27824ac91242SChao Yu kvfree(nm_i->free_nid_bitmap); 2783586d1492SChao Yu kvfree(nm_i->free_nid_count); 27844ac91242SChao Yu 2785e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 278622ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2787599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2788599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2789599a09b2SChao Yu #endif 2790e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2791e05df3b1SJaegeuk Kim kfree(nm_i); 2792e05df3b1SJaegeuk Kim } 2793e05df3b1SJaegeuk Kim 27946e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2795e05df3b1SJaegeuk Kim { 2796e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2797e8512d2eSGu Zheng sizeof(struct nat_entry)); 2798e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2799aec71382SChao Yu goto fail; 2800e05df3b1SJaegeuk Kim 2801e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2802e8512d2eSGu Zheng sizeof(struct free_nid)); 2803aec71382SChao Yu if (!free_nid_slab) 2804ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2805aec71382SChao Yu 2806aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2807aec71382SChao Yu sizeof(struct nat_entry_set)); 2808aec71382SChao Yu if (!nat_entry_set_slab) 2809ce3e6d25SMarkus Elfring goto destroy_free_nid; 2810e05df3b1SJaegeuk Kim return 0; 2811aec71382SChao Yu 2812ce3e6d25SMarkus Elfring destroy_free_nid: 2813aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2814ce3e6d25SMarkus Elfring destroy_nat_entry: 2815aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2816aec71382SChao Yu fail: 2817aec71382SChao Yu return -ENOMEM; 2818e05df3b1SJaegeuk Kim } 2819e05df3b1SJaegeuk Kim 2820e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2821e05df3b1SJaegeuk Kim { 2822aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2823e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2824e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2825e05df3b1SJaegeuk Kim } 2826