10a8165d7SJaegeuk Kim /* 2e05df3b1SJaegeuk Kim * fs/f2fs/node.c 3e05df3b1SJaegeuk Kim * 4e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5e05df3b1SJaegeuk Kim * http://www.samsung.com/ 6e05df3b1SJaegeuk Kim * 7e05df3b1SJaegeuk Kim * This program is free software; you can redistribute it and/or modify 8e05df3b1SJaegeuk Kim * it under the terms of the GNU General Public License version 2 as 9e05df3b1SJaegeuk Kim * published by the Free Software Foundation. 10e05df3b1SJaegeuk Kim */ 11e05df3b1SJaegeuk Kim #include <linux/fs.h> 12e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 13e05df3b1SJaegeuk Kim #include <linux/mpage.h> 14e05df3b1SJaegeuk Kim #include <linux/backing-dev.h> 15e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 16e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 17e05df3b1SJaegeuk Kim #include <linux/swap.h> 18e05df3b1SJaegeuk Kim 19e05df3b1SJaegeuk Kim #include "f2fs.h" 20e05df3b1SJaegeuk Kim #include "node.h" 21e05df3b1SJaegeuk Kim #include "segment.h" 2287905682SYunlei He #include "xattr.h" 239e4ded3fSJaegeuk Kim #include "trace.h" 2451dd6249SNamjae Jeon #include <trace/events/f2fs.h> 25e05df3b1SJaegeuk Kim 2668afcf2dSTomohiro Kusumi #define on_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 27f978f5a0SGu Zheng 28e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 29e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 30aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 31e05df3b1SJaegeuk Kim 326fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 33cdfc41c1SJaegeuk Kim { 346fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 35cdfc41c1SJaegeuk Kim struct sysinfo val; 36e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 37cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 386fb03f3aSJaegeuk Kim bool res = false; 39cdfc41c1SJaegeuk Kim 40cdfc41c1SJaegeuk Kim si_meminfo(&val); 41e5e7ea3cSJaegeuk Kim 42e5e7ea3cSJaegeuk Kim /* only uses low memory */ 43e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 44e5e7ea3cSJaegeuk Kim 45429511cdSChao Yu /* 46429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 47429511cdSChao Yu */ 486fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 499a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 50b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 51e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 526fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 53e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 5409cbfeafSKirill A. Shutemov PAGE_SHIFT; 55e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 56e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 57e589c2c4SJaegeuk Kim res = false; 58a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 59a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 60a1257023SJaegeuk Kim return false; 61a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 62a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 63e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 64e5e7ea3cSJaegeuk Kim int i; 65e5e7ea3cSJaegeuk Kim 6639d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 678f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 688f73cbb7SKinglong Mee sizeof(struct ino_entry); 698f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 70e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 71429511cdSChao Yu } else if (type == EXTENT_CACHE) { 727441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 737441ccefSJaegeuk Kim sizeof(struct extent_tree) + 74429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 7509cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 76429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 7757864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 7857864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 7957864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 8057864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 811e84371fSJaegeuk Kim } else { 821663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 831663cae4SJaegeuk Kim return true; 846fb03f3aSJaegeuk Kim } 856fb03f3aSJaegeuk Kim return res; 86cdfc41c1SJaegeuk Kim } 87cdfc41c1SJaegeuk Kim 88e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 89e05df3b1SJaegeuk Kim { 90e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 91e05df3b1SJaegeuk Kim unsigned int long flags; 92e05df3b1SJaegeuk Kim 93e05df3b1SJaegeuk Kim if (PageDirty(page)) { 94e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 95e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 96e05df3b1SJaegeuk Kim page_index(page), 97e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 98e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 99e05df3b1SJaegeuk Kim 100e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 1014081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 102e05df3b1SJaegeuk Kim } 103e05df3b1SJaegeuk Kim ClearPageUptodate(page); 104e05df3b1SJaegeuk Kim } 105e05df3b1SJaegeuk Kim 106e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 107e05df3b1SJaegeuk Kim { 108e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 109e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 110e05df3b1SJaegeuk Kim } 111e05df3b1SJaegeuk Kim 112e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 113e05df3b1SJaegeuk Kim { 114e05df3b1SJaegeuk Kim struct page *src_page; 115e05df3b1SJaegeuk Kim struct page *dst_page; 116e05df3b1SJaegeuk Kim pgoff_t src_off; 117e05df3b1SJaegeuk Kim pgoff_t dst_off; 118e05df3b1SJaegeuk Kim void *src_addr; 119e05df3b1SJaegeuk Kim void *dst_addr; 120e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 121e05df3b1SJaegeuk Kim 122e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 123e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 124e05df3b1SJaegeuk Kim 125e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 126e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 127e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1289850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 131e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13209cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 133e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 134e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 135e05df3b1SJaegeuk Kim 136e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 137e05df3b1SJaegeuk Kim 138e05df3b1SJaegeuk Kim return dst_page; 139e05df3b1SJaegeuk Kim } 140e05df3b1SJaegeuk Kim 14112f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 14212f9ef37SYunlei He { 14312f9ef37SYunlei He struct nat_entry *new; 14412f9ef37SYunlei He 14512f9ef37SYunlei He if (no_fail) 14612f9ef37SYunlei He new = f2fs_kmem_cache_alloc(nat_entry_slab, 14712f9ef37SYunlei He GFP_NOFS | __GFP_ZERO); 14812f9ef37SYunlei He else 14912f9ef37SYunlei He new = kmem_cache_alloc(nat_entry_slab, 15012f9ef37SYunlei He GFP_NOFS | __GFP_ZERO); 15112f9ef37SYunlei He if (new) { 15212f9ef37SYunlei He nat_set_nid(new, nid); 15312f9ef37SYunlei He nat_reset_flag(new); 15412f9ef37SYunlei He } 15512f9ef37SYunlei He return new; 15612f9ef37SYunlei He } 15712f9ef37SYunlei He 15812f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 15912f9ef37SYunlei He { 16012f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 16112f9ef37SYunlei He } 16212f9ef37SYunlei He 16312f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16412f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 16512f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 16612f9ef37SYunlei He { 16712f9ef37SYunlei He if (no_fail) 16812f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 16912f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 17012f9ef37SYunlei He return NULL; 17112f9ef37SYunlei He 17212f9ef37SYunlei He if (raw_ne) 17312f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17412f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 17512f9ef37SYunlei He nm_i->nat_cnt++; 17612f9ef37SYunlei He return ne; 17712f9ef37SYunlei He } 17812f9ef37SYunlei He 179e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 180e05df3b1SJaegeuk Kim { 181e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 182e05df3b1SJaegeuk Kim } 183e05df3b1SJaegeuk Kim 184e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 185e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 186e05df3b1SJaegeuk Kim { 187e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 188e05df3b1SJaegeuk Kim } 189e05df3b1SJaegeuk Kim 190e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 191e05df3b1SJaegeuk Kim { 192e05df3b1SJaegeuk Kim list_del(&e->list); 193e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 194e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 19512f9ef37SYunlei He __free_nat_entry(e); 196e05df3b1SJaegeuk Kim } 197e05df3b1SJaegeuk Kim 198309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 199309cc2b6SJaegeuk Kim struct nat_entry *ne) 200309cc2b6SJaegeuk Kim { 201309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 202309cc2b6SJaegeuk Kim struct nat_entry_set *head; 203309cc2b6SJaegeuk Kim 204309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 205309cc2b6SJaegeuk Kim if (!head) { 20680c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 207309cc2b6SJaegeuk Kim 208309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 209309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 210309cc2b6SJaegeuk Kim head->set = set; 211309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2129be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 213309cc2b6SJaegeuk Kim } 214febeca6dSChao Yu 215febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 216febeca6dSChao Yu goto refresh_list; 217febeca6dSChao Yu 218309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 219309cc2b6SJaegeuk Kim head->entry_cnt++; 220309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 221febeca6dSChao Yu refresh_list: 222febeca6dSChao Yu if (nat_get_blkaddr(ne) == NEW_ADDR) 223febeca6dSChao Yu list_del_init(&ne->list); 224febeca6dSChao Yu else 225febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 226309cc2b6SJaegeuk Kim } 227309cc2b6SJaegeuk Kim 228309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2290b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 230309cc2b6SJaegeuk Kim { 231309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 232309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2330b28b71eSKinglong Mee set->entry_cnt--; 234309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 235309cc2b6SJaegeuk Kim } 236309cc2b6SJaegeuk Kim 237309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 238309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 239309cc2b6SJaegeuk Kim { 240309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 241309cc2b6SJaegeuk Kim start, nr); 242309cc2b6SJaegeuk Kim } 243309cc2b6SJaegeuk Kim 2442dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2452dcf51abSJaegeuk Kim { 2462dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2472dcf51abSJaegeuk Kim struct nat_entry *e; 2482dcf51abSJaegeuk Kim bool need = false; 2492dcf51abSJaegeuk Kim 250b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2512dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2522dcf51abSJaegeuk Kim if (e) { 2532dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2542dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2552dcf51abSJaegeuk Kim need = true; 2562dcf51abSJaegeuk Kim } 257b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2582dcf51abSJaegeuk Kim return need; 2592dcf51abSJaegeuk Kim } 2602dcf51abSJaegeuk Kim 26188bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 262e05df3b1SJaegeuk Kim { 263e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 264e05df3b1SJaegeuk Kim struct nat_entry *e; 26588bd02c9SJaegeuk Kim bool is_cp = true; 266e05df3b1SJaegeuk Kim 267b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 268e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2697ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 27088bd02c9SJaegeuk Kim is_cp = false; 271b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 272e05df3b1SJaegeuk Kim return is_cp; 273e05df3b1SJaegeuk Kim } 274e05df3b1SJaegeuk Kim 27588bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 276b6fe5873SJaegeuk Kim { 277b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 278b6fe5873SJaegeuk Kim struct nat_entry *e; 27988bd02c9SJaegeuk Kim bool need_update = true; 280b6fe5873SJaegeuk Kim 281b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 28288bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 28388bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 28488bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 28588bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 28688bd02c9SJaegeuk Kim need_update = false; 287b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 28888bd02c9SJaegeuk Kim return need_update; 289b6fe5873SJaegeuk Kim } 290b6fe5873SJaegeuk Kim 29112f9ef37SYunlei He /* must be locked by nat_tree_lock */ 2921515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 293e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 294e05df3b1SJaegeuk Kim { 2951515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 29612f9ef37SYunlei He struct nat_entry *new, *e; 2979be32d72SJaegeuk Kim 29812f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 29912f9ef37SYunlei He if (!new) 30012f9ef37SYunlei He return; 30112f9ef37SYunlei He 30212f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 303e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 30412f9ef37SYunlei He if (!e) 30512f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 30612f9ef37SYunlei He else 3070c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 3080c0b471eSEric Biggers nat_get_blkaddr(e) != 3090c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 3101515aef0SChao Yu nat_get_version(e) != ne->version); 31112f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 31212f9ef37SYunlei He if (e != new) 31312f9ef37SYunlei He __free_nat_entry(new); 314e05df3b1SJaegeuk Kim } 315e05df3b1SJaegeuk Kim 316e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 317479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 318e05df3b1SJaegeuk Kim { 319e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 320e05df3b1SJaegeuk Kim struct nat_entry *e; 32112f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 3229be32d72SJaegeuk Kim 323b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 324e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 325e05df3b1SJaegeuk Kim if (!e) { 32612f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 3275c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3289850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 329e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 330e05df3b1SJaegeuk Kim /* 331e05df3b1SJaegeuk Kim * when nid is reallocated, 332e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 333e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 334e05df3b1SJaegeuk Kim */ 3355c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3369850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 337e05df3b1SJaegeuk Kim } 33812f9ef37SYunlei He /* let's free early to reduce memory consumption */ 33912f9ef37SYunlei He if (e != new) 34012f9ef37SYunlei He __free_nat_entry(new); 341e05df3b1SJaegeuk Kim 342e05df3b1SJaegeuk Kim /* sanity check */ 3439850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3449850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 345e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3469850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 347e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3489850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 349e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 350e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 351e05df3b1SJaegeuk Kim 352e1c42045Sarter97 /* increment version no as node is removed */ 353e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 354e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 355e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 356e05df3b1SJaegeuk Kim } 357e05df3b1SJaegeuk Kim 358e05df3b1SJaegeuk Kim /* change address */ 359e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 36088bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 36188bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 362e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 363479f40c4SJaegeuk Kim 364479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 365d5b692b7SChao Yu if (ni->nid != ni->ino) 366479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 36788bd02c9SJaegeuk Kim if (e) { 36888bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 36988bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 37088bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 37188bd02c9SJaegeuk Kim } 372b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 373e05df3b1SJaegeuk Kim } 374e05df3b1SJaegeuk Kim 3754660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 376e05df3b1SJaegeuk Kim { 377e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3781b38dc8eSJaegeuk Kim int nr = nr_shrink; 379e05df3b1SJaegeuk Kim 380b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 381b873b798SJaegeuk Kim return 0; 382e05df3b1SJaegeuk Kim 383e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 384e05df3b1SJaegeuk Kim struct nat_entry *ne; 385e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 386e05df3b1SJaegeuk Kim struct nat_entry, list); 387e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 388e05df3b1SJaegeuk Kim nr_shrink--; 389e05df3b1SJaegeuk Kim } 390b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3911b38dc8eSJaegeuk Kim return nr - nr_shrink; 392e05df3b1SJaegeuk Kim } 393e05df3b1SJaegeuk Kim 3940a8165d7SJaegeuk Kim /* 395e1c42045Sarter97 * This function always returns success 396e05df3b1SJaegeuk Kim */ 397e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 398e05df3b1SJaegeuk Kim { 399e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 400e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 401b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 402e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 403e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 404e05df3b1SJaegeuk Kim struct page *page = NULL; 405e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 406e05df3b1SJaegeuk Kim struct nat_entry *e; 40766a82d1fSYunlei He pgoff_t index; 408e05df3b1SJaegeuk Kim int i; 409e05df3b1SJaegeuk Kim 410e05df3b1SJaegeuk Kim ni->nid = nid; 411e05df3b1SJaegeuk Kim 412e05df3b1SJaegeuk Kim /* Check nat cache */ 413b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 414e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 415e05df3b1SJaegeuk Kim if (e) { 416e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 417e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 418e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 419b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 420e05df3b1SJaegeuk Kim return; 4211515aef0SChao Yu } 422e05df3b1SJaegeuk Kim 4233547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 4243547ea96SJaegeuk Kim 425e05df3b1SJaegeuk Kim /* Check current segment summary */ 426b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 427dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 428e05df3b1SJaegeuk Kim if (i >= 0) { 429dfc08a12SChao Yu ne = nat_in_journal(journal, i); 430e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 431e05df3b1SJaegeuk Kim } 432b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 43366a82d1fSYunlei He if (i >= 0) { 43466a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 435e05df3b1SJaegeuk Kim goto cache; 43666a82d1fSYunlei He } 437e05df3b1SJaegeuk Kim 438e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 43966a82d1fSYunlei He index = current_nat_addr(sbi, nid); 44066a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 44166a82d1fSYunlei He 44266a82d1fSYunlei He page = get_meta_page(sbi, index); 443e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 444e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 445e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 446e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 447e05df3b1SJaegeuk Kim cache: 448e05df3b1SJaegeuk Kim /* cache nat entry */ 4491515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 450e05df3b1SJaegeuk Kim } 451e05df3b1SJaegeuk Kim 45279344efbSJaegeuk Kim /* 45379344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 45479344efbSJaegeuk Kim */ 45579344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 45679344efbSJaegeuk Kim { 45779344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 45879344efbSJaegeuk Kim struct blk_plug plug; 45979344efbSJaegeuk Kim int i, end; 46079344efbSJaegeuk Kim nid_t nid; 46179344efbSJaegeuk Kim 46279344efbSJaegeuk Kim blk_start_plug(&plug); 46379344efbSJaegeuk Kim 46479344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 46579344efbSJaegeuk Kim end = start + n; 46679344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 46779344efbSJaegeuk Kim for (i = start; i < end; i++) { 46879344efbSJaegeuk Kim nid = get_nid(parent, i, false); 46979344efbSJaegeuk Kim ra_node_page(sbi, nid); 47079344efbSJaegeuk Kim } 47179344efbSJaegeuk Kim 47279344efbSJaegeuk Kim blk_finish_plug(&plug); 47379344efbSJaegeuk Kim } 47479344efbSJaegeuk Kim 4753cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4763cf45747SChao Yu { 4773cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4783cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4793cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4803cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4813cf45747SChao Yu int cur_level = dn->cur_level; 4823cf45747SChao Yu int max_level = dn->max_level; 4833cf45747SChao Yu pgoff_t base = 0; 4843cf45747SChao Yu 4853cf45747SChao Yu if (!dn->max_level) 4863cf45747SChao Yu return pgofs + 1; 4873cf45747SChao Yu 4883cf45747SChao Yu while (max_level-- > cur_level) 4893cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4903cf45747SChao Yu 4913cf45747SChao Yu switch (dn->max_level) { 4923cf45747SChao Yu case 3: 4933cf45747SChao Yu base += 2 * indirect_blks; 4943cf45747SChao Yu case 2: 4953cf45747SChao Yu base += 2 * direct_blks; 4963cf45747SChao Yu case 1: 4973cf45747SChao Yu base += direct_index; 4983cf45747SChao Yu break; 4993cf45747SChao Yu default: 5003cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 5013cf45747SChao Yu } 5023cf45747SChao Yu 5033cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 5043cf45747SChao Yu } 5053cf45747SChao Yu 5060a8165d7SJaegeuk Kim /* 507e05df3b1SJaegeuk Kim * The maximum depth is four. 508e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 509e05df3b1SJaegeuk Kim */ 51081ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 511de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 512e05df3b1SJaegeuk Kim { 51381ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 514e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 515e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 516e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 517e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 518e05df3b1SJaegeuk Kim int n = 0; 519e05df3b1SJaegeuk Kim int level = 0; 520e05df3b1SJaegeuk Kim 521e05df3b1SJaegeuk Kim noffset[0] = 0; 522e05df3b1SJaegeuk Kim 523e05df3b1SJaegeuk Kim if (block < direct_index) { 52425c0a6e5SNamjae Jeon offset[n] = block; 525e05df3b1SJaegeuk Kim goto got; 526e05df3b1SJaegeuk Kim } 527e05df3b1SJaegeuk Kim block -= direct_index; 528e05df3b1SJaegeuk Kim if (block < direct_blks) { 529e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 530e05df3b1SJaegeuk Kim noffset[n] = 1; 53125c0a6e5SNamjae Jeon offset[n] = block; 532e05df3b1SJaegeuk Kim level = 1; 533e05df3b1SJaegeuk Kim goto got; 534e05df3b1SJaegeuk Kim } 535e05df3b1SJaegeuk Kim block -= direct_blks; 536e05df3b1SJaegeuk Kim if (block < direct_blks) { 537e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 538e05df3b1SJaegeuk Kim noffset[n] = 2; 53925c0a6e5SNamjae Jeon offset[n] = block; 540e05df3b1SJaegeuk Kim level = 1; 541e05df3b1SJaegeuk Kim goto got; 542e05df3b1SJaegeuk Kim } 543e05df3b1SJaegeuk Kim block -= direct_blks; 544e05df3b1SJaegeuk Kim if (block < indirect_blks) { 545e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 546e05df3b1SJaegeuk Kim noffset[n] = 3; 547e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 548e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 54925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 550e05df3b1SJaegeuk Kim level = 2; 551e05df3b1SJaegeuk Kim goto got; 552e05df3b1SJaegeuk Kim } 553e05df3b1SJaegeuk Kim block -= indirect_blks; 554e05df3b1SJaegeuk Kim if (block < indirect_blks) { 555e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 556e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 557e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 558e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 55925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 560e05df3b1SJaegeuk Kim level = 2; 561e05df3b1SJaegeuk Kim goto got; 562e05df3b1SJaegeuk Kim } 563e05df3b1SJaegeuk Kim block -= indirect_blks; 564e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 565e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 566e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 567e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 568e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 569e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 570e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 571e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 572e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 573e05df3b1SJaegeuk Kim offset[n - 1]; 57425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 575e05df3b1SJaegeuk Kim level = 3; 576e05df3b1SJaegeuk Kim goto got; 577e05df3b1SJaegeuk Kim } else { 578adb6dc19SJaegeuk Kim return -E2BIG; 579e05df3b1SJaegeuk Kim } 580e05df3b1SJaegeuk Kim got: 581e05df3b1SJaegeuk Kim return level; 582e05df3b1SJaegeuk Kim } 583e05df3b1SJaegeuk Kim 584e05df3b1SJaegeuk Kim /* 585e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5864f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5874f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 58839936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 589e05df3b1SJaegeuk Kim */ 590266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 591e05df3b1SJaegeuk Kim { 5924081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 593e05df3b1SJaegeuk Kim struct page *npage[4]; 594f1a3b98eSJaegeuk Kim struct page *parent = NULL; 595e05df3b1SJaegeuk Kim int offset[4]; 596e05df3b1SJaegeuk Kim unsigned int noffset[4]; 597e05df3b1SJaegeuk Kim nid_t nids[4]; 5983cf45747SChao Yu int level, i = 0; 599e05df3b1SJaegeuk Kim int err = 0; 600e05df3b1SJaegeuk Kim 60181ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 602adb6dc19SJaegeuk Kim if (level < 0) 603adb6dc19SJaegeuk Kim return level; 604e05df3b1SJaegeuk Kim 605e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 6061646cfacSJaegeuk Kim npage[0] = dn->inode_page; 6071646cfacSJaegeuk Kim 6081646cfacSJaegeuk Kim if (!npage[0]) { 609e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 610e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 611e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 6121646cfacSJaegeuk Kim } 613f1a3b98eSJaegeuk Kim 614f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 615f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 61676629165SJaegeuk Kim err = -ENOENT; 617f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 618f1a3b98eSJaegeuk Kim goto release_out; 619f1a3b98eSJaegeuk Kim } 620f1a3b98eSJaegeuk Kim 621e05df3b1SJaegeuk Kim parent = npage[0]; 62252c2db3fSChangman Lee if (level != 0) 623e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 624e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 625e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 626e05df3b1SJaegeuk Kim 627e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 628e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 629e05df3b1SJaegeuk Kim bool done = false; 630e05df3b1SJaegeuk Kim 631266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 632e05df3b1SJaegeuk Kim /* alloc new node */ 633e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 634e05df3b1SJaegeuk Kim err = -ENOSPC; 635e05df3b1SJaegeuk Kim goto release_pages; 636e05df3b1SJaegeuk Kim } 637e05df3b1SJaegeuk Kim 638e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6395f4ce6abSYunlei He npage[i] = new_node_page(dn, noffset[i]); 640e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 641e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 642e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 643e05df3b1SJaegeuk Kim goto release_pages; 644e05df3b1SJaegeuk Kim } 645e05df3b1SJaegeuk Kim 646e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 647e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 648e05df3b1SJaegeuk Kim done = true; 649266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 650e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 651e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 652e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 653e05df3b1SJaegeuk Kim goto release_pages; 654e05df3b1SJaegeuk Kim } 655e05df3b1SJaegeuk Kim done = true; 656e05df3b1SJaegeuk Kim } 657e05df3b1SJaegeuk Kim if (i == 1) { 658e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 659e05df3b1SJaegeuk Kim unlock_page(parent); 660e05df3b1SJaegeuk Kim } else { 661e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 662e05df3b1SJaegeuk Kim } 663e05df3b1SJaegeuk Kim 664e05df3b1SJaegeuk Kim if (!done) { 665e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 666e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 667e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 668e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 669e05df3b1SJaegeuk Kim goto release_out; 670e05df3b1SJaegeuk Kim } 671e05df3b1SJaegeuk Kim } 672e05df3b1SJaegeuk Kim if (i < level) { 673e05df3b1SJaegeuk Kim parent = npage[i]; 674e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 675e05df3b1SJaegeuk Kim } 676e05df3b1SJaegeuk Kim } 677e05df3b1SJaegeuk Kim dn->nid = nids[level]; 678e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 679e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 6807a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 6817a2af766SChao Yu dn->node_page, dn->ofs_in_node); 682e05df3b1SJaegeuk Kim return 0; 683e05df3b1SJaegeuk Kim 684e05df3b1SJaegeuk Kim release_pages: 685e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 686e05df3b1SJaegeuk Kim if (i > 1) 687e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 688e05df3b1SJaegeuk Kim release_out: 689e05df3b1SJaegeuk Kim dn->inode_page = NULL; 690e05df3b1SJaegeuk Kim dn->node_page = NULL; 6913cf45747SChao Yu if (err == -ENOENT) { 6923cf45747SChao Yu dn->cur_level = i; 6933cf45747SChao Yu dn->max_level = level; 6940a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 6953cf45747SChao Yu } 696e05df3b1SJaegeuk Kim return err; 697e05df3b1SJaegeuk Kim } 698e05df3b1SJaegeuk Kim 699e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 700e05df3b1SJaegeuk Kim { 7014081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 702e05df3b1SJaegeuk Kim struct node_info ni; 703e05df3b1SJaegeuk Kim 704e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 705e05df3b1SJaegeuk Kim 706e05df3b1SJaegeuk Kim /* Deallocate node address */ 70771e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 708000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 709479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 710e05df3b1SJaegeuk Kim 711e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 712e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 713e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 7140f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 715e05df3b1SJaegeuk Kim } 716000519f2SChao Yu 717e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 718caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 719e05df3b1SJaegeuk Kim 720e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 721bf39c00aSJaegeuk Kim 722bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 723bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 724bf39c00aSJaegeuk Kim 725e05df3b1SJaegeuk Kim dn->node_page = NULL; 72651dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 727e05df3b1SJaegeuk Kim } 728e05df3b1SJaegeuk Kim 729e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 730e05df3b1SJaegeuk Kim { 731e05df3b1SJaegeuk Kim struct page *page; 732e05df3b1SJaegeuk Kim 733e05df3b1SJaegeuk Kim if (dn->nid == 0) 734e05df3b1SJaegeuk Kim return 1; 735e05df3b1SJaegeuk Kim 736e05df3b1SJaegeuk Kim /* get direct node */ 7374081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 738e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 739e05df3b1SJaegeuk Kim return 1; 740e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 741e05df3b1SJaegeuk Kim return PTR_ERR(page); 742e05df3b1SJaegeuk Kim 743e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 744e05df3b1SJaegeuk Kim dn->node_page = page; 745e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 746e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 747e05df3b1SJaegeuk Kim truncate_node(dn); 748e05df3b1SJaegeuk Kim return 1; 749e05df3b1SJaegeuk Kim } 750e05df3b1SJaegeuk Kim 751e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 752e05df3b1SJaegeuk Kim int ofs, int depth) 753e05df3b1SJaegeuk Kim { 754e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 755e05df3b1SJaegeuk Kim struct page *page; 756e05df3b1SJaegeuk Kim struct f2fs_node *rn; 757e05df3b1SJaegeuk Kim nid_t child_nid; 758e05df3b1SJaegeuk Kim unsigned int child_nofs; 759e05df3b1SJaegeuk Kim int freed = 0; 760e05df3b1SJaegeuk Kim int i, ret; 761e05df3b1SJaegeuk Kim 762e05df3b1SJaegeuk Kim if (dn->nid == 0) 763e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 764e05df3b1SJaegeuk Kim 76551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 76651dd6249SNamjae Jeon 7674081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 76851dd6249SNamjae Jeon if (IS_ERR(page)) { 76951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 770e05df3b1SJaegeuk Kim return PTR_ERR(page); 77151dd6249SNamjae Jeon } 772e05df3b1SJaegeuk Kim 77379344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 77479344efbSJaegeuk Kim 77545590710SGu Zheng rn = F2FS_NODE(page); 776e05df3b1SJaegeuk Kim if (depth < 3) { 777e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 778e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 779e05df3b1SJaegeuk Kim if (child_nid == 0) 780e05df3b1SJaegeuk Kim continue; 781e05df3b1SJaegeuk Kim rdn.nid = child_nid; 782e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 783e05df3b1SJaegeuk Kim if (ret < 0) 784e05df3b1SJaegeuk Kim goto out_err; 78512719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 78693bae099SJaegeuk Kim dn->node_changed = true; 787e05df3b1SJaegeuk Kim } 788e05df3b1SJaegeuk Kim } else { 789e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 790e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 791e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 792e05df3b1SJaegeuk Kim if (child_nid == 0) { 793e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 794e05df3b1SJaegeuk Kim continue; 795e05df3b1SJaegeuk Kim } 796e05df3b1SJaegeuk Kim rdn.nid = child_nid; 797e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 798e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 79912719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 80093bae099SJaegeuk Kim dn->node_changed = true; 801e05df3b1SJaegeuk Kim child_nofs += ret; 802e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 803e05df3b1SJaegeuk Kim goto out_err; 804e05df3b1SJaegeuk Kim } 805e05df3b1SJaegeuk Kim } 806e05df3b1SJaegeuk Kim freed = child_nofs; 807e05df3b1SJaegeuk Kim } 808e05df3b1SJaegeuk Kim 809e05df3b1SJaegeuk Kim if (!ofs) { 810e05df3b1SJaegeuk Kim /* remove current indirect node */ 811e05df3b1SJaegeuk Kim dn->node_page = page; 812e05df3b1SJaegeuk Kim truncate_node(dn); 813e05df3b1SJaegeuk Kim freed++; 814e05df3b1SJaegeuk Kim } else { 815e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 816e05df3b1SJaegeuk Kim } 81751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 818e05df3b1SJaegeuk Kim return freed; 819e05df3b1SJaegeuk Kim 820e05df3b1SJaegeuk Kim out_err: 821e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 82251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 823e05df3b1SJaegeuk Kim return ret; 824e05df3b1SJaegeuk Kim } 825e05df3b1SJaegeuk Kim 826e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 827e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 828e05df3b1SJaegeuk Kim { 829e05df3b1SJaegeuk Kim struct page *pages[2]; 830e05df3b1SJaegeuk Kim nid_t nid[3]; 831e05df3b1SJaegeuk Kim nid_t child_nid; 832e05df3b1SJaegeuk Kim int err = 0; 833e05df3b1SJaegeuk Kim int i; 834e05df3b1SJaegeuk Kim int idx = depth - 2; 835e05df3b1SJaegeuk Kim 836e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 837e05df3b1SJaegeuk Kim if (!nid[0]) 838e05df3b1SJaegeuk Kim return 0; 839e05df3b1SJaegeuk Kim 840e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 841a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 842e1c42045Sarter97 /* reference count'll be increased */ 8434081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 844e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 845e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 846a225dca3Sshifei10.ge idx = i - 1; 847e05df3b1SJaegeuk Kim goto fail; 848e05df3b1SJaegeuk Kim } 849e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 850e05df3b1SJaegeuk Kim } 851e05df3b1SJaegeuk Kim 85279344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 85379344efbSJaegeuk Kim 854e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 855a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 856e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 857e05df3b1SJaegeuk Kim if (!child_nid) 858e05df3b1SJaegeuk Kim continue; 859e05df3b1SJaegeuk Kim dn->nid = child_nid; 860e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 861e05df3b1SJaegeuk Kim if (err < 0) 862e05df3b1SJaegeuk Kim goto fail; 86312719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 86493bae099SJaegeuk Kim dn->node_changed = true; 865e05df3b1SJaegeuk Kim } 866e05df3b1SJaegeuk Kim 867a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 868e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 869e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 870e05df3b1SJaegeuk Kim truncate_node(dn); 871e05df3b1SJaegeuk Kim } else { 872e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 873e05df3b1SJaegeuk Kim } 874e05df3b1SJaegeuk Kim offset[idx]++; 875a225dca3Sshifei10.ge offset[idx + 1] = 0; 876a225dca3Sshifei10.ge idx--; 877e05df3b1SJaegeuk Kim fail: 878a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 879e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 88051dd6249SNamjae Jeon 88151dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 88251dd6249SNamjae Jeon 883e05df3b1SJaegeuk Kim return err; 884e05df3b1SJaegeuk Kim } 885e05df3b1SJaegeuk Kim 8860a8165d7SJaegeuk Kim /* 887e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 888e05df3b1SJaegeuk Kim */ 889e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 890e05df3b1SJaegeuk Kim { 8914081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 892e05df3b1SJaegeuk Kim int err = 0, cont = 1; 893e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8947dd690c8SJaegeuk Kim unsigned int nofs = 0; 89558bfaf44SJaegeuk Kim struct f2fs_inode *ri; 896e05df3b1SJaegeuk Kim struct dnode_of_data dn; 897e05df3b1SJaegeuk Kim struct page *page; 898e05df3b1SJaegeuk Kim 89951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 90051dd6249SNamjae Jeon 90181ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 902adb6dc19SJaegeuk Kim if (level < 0) 903adb6dc19SJaegeuk Kim return level; 904ff373558SJaegeuk Kim 905e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 90651dd6249SNamjae Jeon if (IS_ERR(page)) { 90751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 908e05df3b1SJaegeuk Kim return PTR_ERR(page); 90951dd6249SNamjae Jeon } 910e05df3b1SJaegeuk Kim 911e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 912e05df3b1SJaegeuk Kim unlock_page(page); 913e05df3b1SJaegeuk Kim 91458bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 915e05df3b1SJaegeuk Kim switch (level) { 916e05df3b1SJaegeuk Kim case 0: 917e05df3b1SJaegeuk Kim case 1: 918e05df3b1SJaegeuk Kim nofs = noffset[1]; 919e05df3b1SJaegeuk Kim break; 920e05df3b1SJaegeuk Kim case 2: 921e05df3b1SJaegeuk Kim nofs = noffset[1]; 922e05df3b1SJaegeuk Kim if (!offset[level - 1]) 923e05df3b1SJaegeuk Kim goto skip_partial; 92458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 925e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 926e05df3b1SJaegeuk Kim goto fail; 927e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 928e05df3b1SJaegeuk Kim break; 929e05df3b1SJaegeuk Kim case 3: 930e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 931e05df3b1SJaegeuk Kim if (!offset[level - 1]) 932e05df3b1SJaegeuk Kim goto skip_partial; 93358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 934e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 935e05df3b1SJaegeuk Kim goto fail; 936e05df3b1SJaegeuk Kim break; 937e05df3b1SJaegeuk Kim default: 938e05df3b1SJaegeuk Kim BUG(); 939e05df3b1SJaegeuk Kim } 940e05df3b1SJaegeuk Kim 941e05df3b1SJaegeuk Kim skip_partial: 942e05df3b1SJaegeuk Kim while (cont) { 94358bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 944e05df3b1SJaegeuk Kim switch (offset[0]) { 945e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 946e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 947e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 948e05df3b1SJaegeuk Kim break; 949e05df3b1SJaegeuk Kim 950e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 951e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 952e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 953e05df3b1SJaegeuk Kim break; 954e05df3b1SJaegeuk Kim 955e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 956e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 957e05df3b1SJaegeuk Kim cont = 0; 958e05df3b1SJaegeuk Kim break; 959e05df3b1SJaegeuk Kim 960e05df3b1SJaegeuk Kim default: 961e05df3b1SJaegeuk Kim BUG(); 962e05df3b1SJaegeuk Kim } 963e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 964e05df3b1SJaegeuk Kim goto fail; 965e05df3b1SJaegeuk Kim if (offset[1] == 0 && 96658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 967e05df3b1SJaegeuk Kim lock_page(page); 968ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 969fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 97058bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 971e05df3b1SJaegeuk Kim set_page_dirty(page); 972e05df3b1SJaegeuk Kim unlock_page(page); 973e05df3b1SJaegeuk Kim } 974e05df3b1SJaegeuk Kim offset[1] = 0; 975e05df3b1SJaegeuk Kim offset[0]++; 976e05df3b1SJaegeuk Kim nofs += err; 977e05df3b1SJaegeuk Kim } 978e05df3b1SJaegeuk Kim fail: 979e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 98051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 981e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 982e05df3b1SJaegeuk Kim } 983e05df3b1SJaegeuk Kim 9849c77f754SJaegeuk Kim /* caller must lock inode page */ 9859c77f754SJaegeuk Kim int truncate_xattr_node(struct inode *inode) 9864f16fb0fSJaegeuk Kim { 9874081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9884f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9894f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9904f16fb0fSJaegeuk Kim struct page *npage; 9914f16fb0fSJaegeuk Kim 9924f16fb0fSJaegeuk Kim if (!nid) 9934f16fb0fSJaegeuk Kim return 0; 9944f16fb0fSJaegeuk Kim 9954f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9964f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9974f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9984f16fb0fSJaegeuk Kim 999205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 100065985d93SJaegeuk Kim 10019c77f754SJaegeuk Kim set_new_dnode(&dn, inode, NULL, npage, nid); 10024f16fb0fSJaegeuk Kim truncate_node(&dn); 10034f16fb0fSJaegeuk Kim return 0; 10044f16fb0fSJaegeuk Kim } 10054f16fb0fSJaegeuk Kim 100639936837SJaegeuk Kim /* 10074f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 10084f4124d0SChao Yu * f2fs_unlock_op(). 100939936837SJaegeuk Kim */ 101013ec7297SChao Yu int remove_inode_page(struct inode *inode) 1011e05df3b1SJaegeuk Kim { 1012e05df3b1SJaegeuk Kim struct dnode_of_data dn; 101313ec7297SChao Yu int err; 1014e05df3b1SJaegeuk Kim 1015c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 101613ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 101713ec7297SChao Yu if (err) 101813ec7297SChao Yu return err; 1019e05df3b1SJaegeuk Kim 10209c77f754SJaegeuk Kim err = truncate_xattr_node(inode); 102113ec7297SChao Yu if (err) { 1022c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 102313ec7297SChao Yu return err; 1024e05df3b1SJaegeuk Kim } 1025c2e69583SJaegeuk Kim 1026c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1027c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1028c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 1029c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 1030c2e69583SJaegeuk Kim 1031e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10329850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10330eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1034c2e69583SJaegeuk Kim 1035c2e69583SJaegeuk Kim /* will put inode & node pages */ 1036e05df3b1SJaegeuk Kim truncate_node(&dn); 103713ec7297SChao Yu return 0; 1038e05df3b1SJaegeuk Kim } 1039e05df3b1SJaegeuk Kim 1040a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1041e05df3b1SJaegeuk Kim { 1042e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1043e05df3b1SJaegeuk Kim 1044e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1045e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 104644a83ff6SJaegeuk Kim 104744a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10485f4ce6abSYunlei He return new_node_page(&dn, 0); 1049e05df3b1SJaegeuk Kim } 1050e05df3b1SJaegeuk Kim 10515f4ce6abSYunlei He struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1052e05df3b1SJaegeuk Kim { 10534081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 105425cc5d3bSJaegeuk Kim struct node_info new_ni; 1055e05df3b1SJaegeuk Kim struct page *page; 1056e05df3b1SJaegeuk Kim int err; 1057e05df3b1SJaegeuk Kim 105891942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1059e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1060e05df3b1SJaegeuk Kim 1061300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1062e05df3b1SJaegeuk Kim if (!page) 1063e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1064e05df3b1SJaegeuk Kim 10650abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 10669c02740cSJaegeuk Kim goto fail; 10670abd675eSChao Yu 106825cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 106925cc5d3bSJaegeuk Kim get_node_info(sbi, dn->nid, &new_ni); 107025cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 107125cc5d3bSJaegeuk Kim #endif 107225cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1073e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 107425cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 107525cc5d3bSJaegeuk Kim new_ni.flag = 0; 107625cc5d3bSJaegeuk Kim new_ni.version = 0; 1077479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10789c02740cSJaegeuk Kim 1079fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10809c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1081398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 1082237c0790SJaegeuk Kim if (!PageUptodate(page)) 10839c02740cSJaegeuk Kim SetPageUptodate(page); 108412719ae1SJaegeuk Kim if (set_page_dirty(page)) 108512719ae1SJaegeuk Kim dn->node_changed = true; 1086e05df3b1SJaegeuk Kim 10874bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1088205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1089479bd73aSJaegeuk Kim 1090e05df3b1SJaegeuk Kim if (ofs == 0) 1091e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1092e05df3b1SJaegeuk Kim return page; 1093e05df3b1SJaegeuk Kim 1094e05df3b1SJaegeuk Kim fail: 109571e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1096e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1097e05df3b1SJaegeuk Kim return ERR_PTR(err); 1098e05df3b1SJaegeuk Kim } 1099e05df3b1SJaegeuk Kim 110056ae674cSJaegeuk Kim /* 110156ae674cSJaegeuk Kim * Caller should do after getting the following values. 110256ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 110386531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 110456ae674cSJaegeuk Kim */ 110504d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1106e05df3b1SJaegeuk Kim { 11074081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1108e05df3b1SJaegeuk Kim struct node_info ni; 1109cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 111005ca3632SJaegeuk Kim .sbi = sbi, 1111cf04e8ebSJaegeuk Kim .type = NODE, 111204d328deSMike Christie .op = REQ_OP_READ, 111304d328deSMike Christie .op_flags = op_flags, 111405ca3632SJaegeuk Kim .page = page, 11154375a336SJaegeuk Kim .encrypted_page = NULL, 1116cf04e8ebSJaegeuk Kim }; 1117e05df3b1SJaegeuk Kim 11183bdad3c7SJaegeuk Kim if (PageUptodate(page)) 11193bdad3c7SJaegeuk Kim return LOCKED_PAGE; 11203bdad3c7SJaegeuk Kim 1121e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1122e05df3b1SJaegeuk Kim 11236bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 11242bca1e23SJaegeuk Kim ClearPageUptodate(page); 1125e05df3b1SJaegeuk Kim return -ENOENT; 1126393ff91fSJaegeuk Kim } 1127393ff91fSJaegeuk Kim 11287a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 112905ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1130e05df3b1SJaegeuk Kim } 1131e05df3b1SJaegeuk Kim 11320a8165d7SJaegeuk Kim /* 1133e05df3b1SJaegeuk Kim * Readahead a node page 1134e05df3b1SJaegeuk Kim */ 1135e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1136e05df3b1SJaegeuk Kim { 1137e05df3b1SJaegeuk Kim struct page *apage; 113856ae674cSJaegeuk Kim int err; 1139e05df3b1SJaegeuk Kim 1140e8458725SChao Yu if (!nid) 1141e8458725SChao Yu return; 1142e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1143e8458725SChao Yu 1144999270deSFan Li rcu_read_lock(); 1145999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1146999270deSFan Li rcu_read_unlock(); 1147999270deSFan Li if (apage) 1148393ff91fSJaegeuk Kim return; 1149e05df3b1SJaegeuk Kim 1150300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1151e05df3b1SJaegeuk Kim if (!apage) 1152e05df3b1SJaegeuk Kim return; 1153e05df3b1SJaegeuk Kim 115470246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 115586531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1156e05df3b1SJaegeuk Kim } 1157e05df3b1SJaegeuk Kim 115817a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11590e022ea8SChao Yu struct page *parent, int start) 1160e05df3b1SJaegeuk Kim { 116156ae674cSJaegeuk Kim struct page *page; 116256ae674cSJaegeuk Kim int err; 11634aa69d56SJaegeuk Kim 11644aa69d56SJaegeuk Kim if (!nid) 11654aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11664aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1167afcb7ca0SJaegeuk Kim repeat: 1168300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1169e05df3b1SJaegeuk Kim if (!page) 1170e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1171e05df3b1SJaegeuk Kim 117270fd7614SChristoph Hellwig err = read_node_page(page, 0); 117386531d6bSJaegeuk Kim if (err < 0) { 117486531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1175e05df3b1SJaegeuk Kim return ERR_PTR(err); 1176e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 11771f258ec1SChao Yu err = 0; 1178e1c51b9fSChao Yu goto page_hit; 117986531d6bSJaegeuk Kim } 1180aaf96075SJaegeuk Kim 11810e022ea8SChao Yu if (parent) 118279344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11830e022ea8SChao Yu 1184e1c51b9fSChao Yu lock_page(page); 1185e1c51b9fSChao Yu 11864ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1187afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1188afcb7ca0SJaegeuk Kim goto repeat; 1189afcb7ca0SJaegeuk Kim } 11901563ac75SChao Yu 11911f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 11921f258ec1SChao Yu err = -EIO; 11931563ac75SChao Yu goto out_err; 11941f258ec1SChao Yu } 1195704956ecSChao Yu 1196704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1197704956ecSChao Yu err = -EBADMSG; 1198704956ecSChao Yu goto out_err; 1199704956ecSChao Yu } 1200e1c51b9fSChao Yu page_hit: 12010c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 12021f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 12031f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 12041f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 12051f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 12061f258ec1SChao Yu next_blkaddr_of_node(page)); 12071f258ec1SChao Yu err = -EINVAL; 12080c9df7fbSYunlong Song out_err: 1209ee605234SJaegeuk Kim ClearPageUptodate(page); 12100c9df7fbSYunlong Song f2fs_put_page(page, 1); 12111f258ec1SChao Yu return ERR_PTR(err); 12120c9df7fbSYunlong Song } 1213e05df3b1SJaegeuk Kim return page; 1214e05df3b1SJaegeuk Kim } 1215e05df3b1SJaegeuk Kim 12160e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 12170e022ea8SChao Yu { 12180e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 12190e022ea8SChao Yu } 12200e022ea8SChao Yu 1221e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1222e05df3b1SJaegeuk Kim { 12234081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 12240e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1225e05df3b1SJaegeuk Kim 12260e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1227e05df3b1SJaegeuk Kim } 1228e05df3b1SJaegeuk Kim 12292049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 12302049d4fcSJaegeuk Kim { 12312049d4fcSJaegeuk Kim struct inode *inode; 12322049d4fcSJaegeuk Kim struct page *page; 12330f3311a8SChao Yu int ret; 12342049d4fcSJaegeuk Kim 12352049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 12362049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 12372049d4fcSJaegeuk Kim if (!inode) 12382049d4fcSJaegeuk Kim return; 12392049d4fcSJaegeuk Kim 124001eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 124101eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 12422049d4fcSJaegeuk Kim if (!page) 12432049d4fcSJaegeuk Kim goto iput_out; 12442049d4fcSJaegeuk Kim 12452049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12462049d4fcSJaegeuk Kim goto page_out; 12472049d4fcSJaegeuk Kim 12482049d4fcSJaegeuk Kim if (!PageDirty(page)) 12492049d4fcSJaegeuk Kim goto page_out; 12502049d4fcSJaegeuk Kim 12512049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12522049d4fcSJaegeuk Kim goto page_out; 12532049d4fcSJaegeuk Kim 12540f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12552049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 1256933439c8SChao Yu remove_dirty_inode(inode); 12570f3311a8SChao Yu if (ret) 12582049d4fcSJaegeuk Kim set_page_dirty(page); 12592049d4fcSJaegeuk Kim page_out: 12604a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12612049d4fcSJaegeuk Kim iput_out: 12622049d4fcSJaegeuk Kim iput(inode); 12632049d4fcSJaegeuk Kim } 12642049d4fcSJaegeuk Kim 1265608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1266e05df3b1SJaegeuk Kim { 1267028a63a6SJan Kara pgoff_t index; 1268e05df3b1SJaegeuk Kim struct pagevec pvec; 1269608514deSJaegeuk Kim struct page *last_page = NULL; 1270028a63a6SJan Kara int nr_pages; 127152681375SJaegeuk Kim 127286679820SMel Gorman pagevec_init(&pvec); 127352681375SJaegeuk Kim index = 0; 127452681375SJaegeuk Kim 1275028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 127667fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1277028a63a6SJan Kara int i; 127852681375SJaegeuk Kim 127952681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 128052681375SJaegeuk Kim struct page *page = pvec.pages[i]; 128152681375SJaegeuk Kim 128252681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1283608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 128452681375SJaegeuk Kim pagevec_release(&pvec); 1285608514deSJaegeuk Kim return ERR_PTR(-EIO); 128652681375SJaegeuk Kim } 128752681375SJaegeuk Kim 128852681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 128952681375SJaegeuk Kim continue; 129052681375SJaegeuk Kim if (ino_of_node(page) != ino) 129152681375SJaegeuk Kim continue; 129252681375SJaegeuk Kim 129352681375SJaegeuk Kim lock_page(page); 129452681375SJaegeuk Kim 129552681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 129652681375SJaegeuk Kim continue_unlock: 129752681375SJaegeuk Kim unlock_page(page); 129852681375SJaegeuk Kim continue; 129952681375SJaegeuk Kim } 130052681375SJaegeuk Kim if (ino_of_node(page) != ino) 130152681375SJaegeuk Kim goto continue_unlock; 130252681375SJaegeuk Kim 130352681375SJaegeuk Kim if (!PageDirty(page)) { 130452681375SJaegeuk Kim /* someone wrote it for us */ 130552681375SJaegeuk Kim goto continue_unlock; 130652681375SJaegeuk Kim } 130752681375SJaegeuk Kim 1308608514deSJaegeuk Kim if (last_page) 1309608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1310608514deSJaegeuk Kim 1311608514deSJaegeuk Kim get_page(page); 1312608514deSJaegeuk Kim last_page = page; 1313608514deSJaegeuk Kim unlock_page(page); 1314608514deSJaegeuk Kim } 1315608514deSJaegeuk Kim pagevec_release(&pvec); 1316608514deSJaegeuk Kim cond_resched(); 1317608514deSJaegeuk Kim } 1318608514deSJaegeuk Kim return last_page; 1319608514deSJaegeuk Kim } 1320608514deSJaegeuk Kim 1321d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1322b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 1323b0af6d49SChao Yu enum iostat_type io_type) 1324faa24895SJaegeuk Kim { 1325faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1326faa24895SJaegeuk Kim nid_t nid; 1327faa24895SJaegeuk Kim struct node_info ni; 1328faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1329faa24895SJaegeuk Kim .sbi = sbi, 133039d787beSChao Yu .ino = ino_of_node(page), 1331faa24895SJaegeuk Kim .type = NODE, 1332faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1333faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1334faa24895SJaegeuk Kim .page = page, 1335faa24895SJaegeuk Kim .encrypted_page = NULL, 1336d68f735bSJaegeuk Kim .submitted = false, 1337b0af6d49SChao Yu .io_type = io_type, 1338578c6478SYufen Yu .io_wbc = wbc, 1339faa24895SJaegeuk Kim }; 1340faa24895SJaegeuk Kim 1341faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1342faa24895SJaegeuk Kim 1343db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 1344db198ae0SChao Yu dec_page_count(sbi, F2FS_DIRTY_NODES); 1345db198ae0SChao Yu unlock_page(page); 1346db198ae0SChao Yu return 0; 1347db198ae0SChao Yu } 1348db198ae0SChao Yu 1349faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1350faa24895SJaegeuk Kim goto redirty_out; 1351faa24895SJaegeuk Kim 1352faa24895SJaegeuk Kim /* get old block addr of this node page */ 1353faa24895SJaegeuk Kim nid = nid_of_node(page); 1354faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1355faa24895SJaegeuk Kim 1356faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1357faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1358faa24895SJaegeuk Kim goto redirty_out; 1359faa24895SJaegeuk Kim } else { 1360faa24895SJaegeuk Kim down_read(&sbi->node_write); 1361faa24895SJaegeuk Kim } 1362faa24895SJaegeuk Kim 1363faa24895SJaegeuk Kim get_node_info(sbi, nid, &ni); 1364faa24895SJaegeuk Kim 1365faa24895SJaegeuk Kim /* This page is already truncated */ 1366faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1367faa24895SJaegeuk Kim ClearPageUptodate(page); 1368faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1369faa24895SJaegeuk Kim up_read(&sbi->node_write); 1370faa24895SJaegeuk Kim unlock_page(page); 1371faa24895SJaegeuk Kim return 0; 1372faa24895SJaegeuk Kim } 1373faa24895SJaegeuk Kim 1374e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1375e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1376e7c75ab0SJaegeuk Kim 1377faa24895SJaegeuk Kim set_page_writeback(page); 1378faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 1379faa24895SJaegeuk Kim write_node_page(nid, &fio); 1380faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1381faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1382faa24895SJaegeuk Kim up_read(&sbi->node_write); 1383faa24895SJaegeuk Kim 1384d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1385b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1386b9109b0eSJaegeuk Kim page->index, NODE); 1387d68f735bSJaegeuk Kim submitted = NULL; 1388d68f735bSJaegeuk Kim } 1389faa24895SJaegeuk Kim 1390faa24895SJaegeuk Kim unlock_page(page); 1391faa24895SJaegeuk Kim 1392d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1393b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1394d68f735bSJaegeuk Kim submitted = NULL; 1395d68f735bSJaegeuk Kim } 1396d68f735bSJaegeuk Kim if (submitted) 1397d68f735bSJaegeuk Kim *submitted = fio.submitted; 1398faa24895SJaegeuk Kim 1399401db79fSYunlong Song if (do_balance) 1400401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1401faa24895SJaegeuk Kim return 0; 1402faa24895SJaegeuk Kim 1403faa24895SJaegeuk Kim redirty_out: 1404faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1405faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1406faa24895SJaegeuk Kim } 1407faa24895SJaegeuk Kim 1408f15194fcSYunlei He void move_node_page(struct page *node_page, int gc_type) 1409f15194fcSYunlei He { 1410f15194fcSYunlei He if (gc_type == FG_GC) { 1411f15194fcSYunlei He struct writeback_control wbc = { 1412f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1413f15194fcSYunlei He .nr_to_write = 1, 1414f15194fcSYunlei He .for_reclaim = 0, 1415f15194fcSYunlei He }; 1416f15194fcSYunlei He 1417f15194fcSYunlei He set_page_dirty(node_page); 1418f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1419f15194fcSYunlei He 1420f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1421f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1422f15194fcSYunlei He goto out_page; 1423f15194fcSYunlei He 1424f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 1425f15194fcSYunlei He &wbc, false, FS_GC_NODE_IO)) 1426f15194fcSYunlei He unlock_page(node_page); 1427f15194fcSYunlei He goto release_page; 1428f15194fcSYunlei He } else { 1429f15194fcSYunlei He /* set page dirty and write it */ 1430f15194fcSYunlei He if (!PageWriteback(node_page)) 1431f15194fcSYunlei He set_page_dirty(node_page); 1432f15194fcSYunlei He } 1433f15194fcSYunlei He out_page: 1434f15194fcSYunlei He unlock_page(node_page); 1435f15194fcSYunlei He release_page: 1436f15194fcSYunlei He f2fs_put_page(node_page, 0); 1437f15194fcSYunlei He } 1438f15194fcSYunlei He 1439faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1440faa24895SJaegeuk Kim struct writeback_control *wbc) 1441faa24895SJaegeuk Kim { 1442b0af6d49SChao Yu return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); 1443faa24895SJaegeuk Kim } 1444faa24895SJaegeuk Kim 144526de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1446608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1447608514deSJaegeuk Kim { 1448028a63a6SJan Kara pgoff_t index; 1449942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1450608514deSJaegeuk Kim struct pagevec pvec; 1451608514deSJaegeuk Kim int ret = 0; 1452608514deSJaegeuk Kim struct page *last_page = NULL; 1453608514deSJaegeuk Kim bool marked = false; 145426de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1455028a63a6SJan Kara int nr_pages; 1456608514deSJaegeuk Kim 1457608514deSJaegeuk Kim if (atomic) { 1458608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1459608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1460608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1461608514deSJaegeuk Kim } 1462608514deSJaegeuk Kim retry: 146386679820SMel Gorman pagevec_init(&pvec); 1464608514deSJaegeuk Kim index = 0; 1465608514deSJaegeuk Kim 1466028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 146767fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1468028a63a6SJan Kara int i; 1469608514deSJaegeuk Kim 1470608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1471608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1472d68f735bSJaegeuk Kim bool submitted = false; 1473608514deSJaegeuk Kim 1474608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1475608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1476608514deSJaegeuk Kim pagevec_release(&pvec); 14779de69279SChao Yu ret = -EIO; 14789de69279SChao Yu goto out; 1479608514deSJaegeuk Kim } 1480608514deSJaegeuk Kim 1481608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1482608514deSJaegeuk Kim continue; 1483608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1484608514deSJaegeuk Kim continue; 1485608514deSJaegeuk Kim 1486608514deSJaegeuk Kim lock_page(page); 1487608514deSJaegeuk Kim 1488608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1489608514deSJaegeuk Kim continue_unlock: 1490608514deSJaegeuk Kim unlock_page(page); 1491608514deSJaegeuk Kim continue; 1492608514deSJaegeuk Kim } 1493608514deSJaegeuk Kim if (ino_of_node(page) != ino) 149452681375SJaegeuk Kim goto continue_unlock; 149552681375SJaegeuk Kim 1496608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1497608514deSJaegeuk Kim /* someone wrote it for us */ 1498608514deSJaegeuk Kim goto continue_unlock; 1499608514deSJaegeuk Kim } 1500608514deSJaegeuk Kim 1501608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1502608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1503608514deSJaegeuk Kim 1504d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1505d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1506d29fd172SJaegeuk Kim 1507608514deSJaegeuk Kim if (!atomic || page == last_page) { 150852681375SJaegeuk Kim set_fsync_mark(page, 1); 150926de9b11SJaegeuk Kim if (IS_INODE(page)) { 151026de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 151126de9b11SJaegeuk Kim FI_DIRTY_INODE)) 151226de9b11SJaegeuk Kim update_inode(inode, page); 151352681375SJaegeuk Kim set_dentry_mark(page, 151452681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 151526de9b11SJaegeuk Kim } 1516608514deSJaegeuk Kim /* may be written by other thread */ 1517608514deSJaegeuk Kim if (!PageDirty(page)) 1518608514deSJaegeuk Kim set_page_dirty(page); 1519608514deSJaegeuk Kim } 1520608514deSJaegeuk Kim 1521608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1522608514deSJaegeuk Kim goto continue_unlock; 152352681375SJaegeuk Kim 1524e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1525d68f735bSJaegeuk Kim page == last_page, 1526b0af6d49SChao Yu &submitted, wbc, true, 1527b0af6d49SChao Yu FS_NODE_IO); 1528c267ec15SJaegeuk Kim if (ret) { 152952681375SJaegeuk Kim unlock_page(page); 1530608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1531608514deSJaegeuk Kim break; 1532d68f735bSJaegeuk Kim } else if (submitted) { 1533942fd319SJaegeuk Kim last_idx = page->index; 1534608514deSJaegeuk Kim } 15353f5f4959SChao Yu 1536608514deSJaegeuk Kim if (page == last_page) { 1537608514deSJaegeuk Kim f2fs_put_page(page, 0); 1538608514deSJaegeuk Kim marked = true; 153952681375SJaegeuk Kim break; 154052681375SJaegeuk Kim } 1541c267ec15SJaegeuk Kim } 154252681375SJaegeuk Kim pagevec_release(&pvec); 154352681375SJaegeuk Kim cond_resched(); 154452681375SJaegeuk Kim 1545608514deSJaegeuk Kim if (ret || marked) 154652681375SJaegeuk Kim break; 154752681375SJaegeuk Kim } 1548608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1549608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1550608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1551608514deSJaegeuk Kim ino, last_page->index); 1552608514deSJaegeuk Kim lock_page(last_page); 1553d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1554608514deSJaegeuk Kim set_page_dirty(last_page); 1555608514deSJaegeuk Kim unlock_page(last_page); 1556608514deSJaegeuk Kim goto retry; 1557608514deSJaegeuk Kim } 15589de69279SChao Yu out: 1559942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1560b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1561c267ec15SJaegeuk Kim return ret ? -EIO: 0; 156252681375SJaegeuk Kim } 156352681375SJaegeuk Kim 1564401db79fSYunlong Song int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, 1565b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 156652681375SJaegeuk Kim { 1567028a63a6SJan Kara pgoff_t index; 156852681375SJaegeuk Kim struct pagevec pvec; 156952681375SJaegeuk Kim int step = 0; 157012bb0a8fSJaegeuk Kim int nwritten = 0; 15713f5f4959SChao Yu int ret = 0; 1572028a63a6SJan Kara int nr_pages; 1573e05df3b1SJaegeuk Kim 157486679820SMel Gorman pagevec_init(&pvec); 1575e05df3b1SJaegeuk Kim 1576e05df3b1SJaegeuk Kim next_step: 1577e05df3b1SJaegeuk Kim index = 0; 1578e05df3b1SJaegeuk Kim 1579028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 158067fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1581028a63a6SJan Kara int i; 1582e05df3b1SJaegeuk Kim 1583e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1584e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1585d68f735bSJaegeuk Kim bool submitted = false; 1586e05df3b1SJaegeuk Kim 1587e05df3b1SJaegeuk Kim /* 1588e05df3b1SJaegeuk Kim * flushing sequence with step: 1589e05df3b1SJaegeuk Kim * 0. indirect nodes 1590e05df3b1SJaegeuk Kim * 1. dentry dnodes 1591e05df3b1SJaegeuk Kim * 2. file dnodes 1592e05df3b1SJaegeuk Kim */ 1593e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1594e05df3b1SJaegeuk Kim continue; 1595e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1596e05df3b1SJaegeuk Kim is_cold_node(page))) 1597e05df3b1SJaegeuk Kim continue; 1598e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1599e05df3b1SJaegeuk Kim !is_cold_node(page))) 1600e05df3b1SJaegeuk Kim continue; 16019a4cbc9eSChao Yu lock_node: 160252681375SJaegeuk Kim if (!trylock_page(page)) 1603e05df3b1SJaegeuk Kim continue; 1604e05df3b1SJaegeuk Kim 16054ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1606e05df3b1SJaegeuk Kim continue_unlock: 1607e05df3b1SJaegeuk Kim unlock_page(page); 1608e05df3b1SJaegeuk Kim continue; 1609e05df3b1SJaegeuk Kim } 1610e05df3b1SJaegeuk Kim 1611e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1612e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1613e05df3b1SJaegeuk Kim goto continue_unlock; 1614e05df3b1SJaegeuk Kim } 1615e05df3b1SJaegeuk Kim 16162049d4fcSJaegeuk Kim /* flush inline_data */ 161752681375SJaegeuk Kim if (is_inline_node(page)) { 16182049d4fcSJaegeuk Kim clear_inline_node(page); 16192049d4fcSJaegeuk Kim unlock_page(page); 16202049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 16219a4cbc9eSChao Yu goto lock_node; 16222049d4fcSJaegeuk Kim } 16232049d4fcSJaegeuk Kim 1624fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1625fa3d2bdfSJaegeuk Kim 1626fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1627e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1628e05df3b1SJaegeuk Kim goto continue_unlock; 1629e05df3b1SJaegeuk Kim 1630e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1631e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 163252746519SJaegeuk Kim 1633401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 1634b0af6d49SChao Yu wbc, do_balance, io_type); 1635d68f735bSJaegeuk Kim if (ret) 163652746519SJaegeuk Kim unlock_page(page); 1637d68f735bSJaegeuk Kim else if (submitted) 16383f5f4959SChao Yu nwritten++; 1639e05df3b1SJaegeuk Kim 1640e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1641e05df3b1SJaegeuk Kim break; 1642e05df3b1SJaegeuk Kim } 1643e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1644e05df3b1SJaegeuk Kim cond_resched(); 1645e05df3b1SJaegeuk Kim 1646e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1647e05df3b1SJaegeuk Kim step = 2; 1648e05df3b1SJaegeuk Kim break; 1649e05df3b1SJaegeuk Kim } 1650e05df3b1SJaegeuk Kim } 1651e05df3b1SJaegeuk Kim 1652e05df3b1SJaegeuk Kim if (step < 2) { 1653e05df3b1SJaegeuk Kim step++; 1654e05df3b1SJaegeuk Kim goto next_step; 1655e05df3b1SJaegeuk Kim } 1656db198ae0SChao Yu 16573f5f4959SChao Yu if (nwritten) 1658b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1659db198ae0SChao Yu 1660db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1661db198ae0SChao Yu return -EIO; 16623f5f4959SChao Yu return ret; 1663e05df3b1SJaegeuk Kim } 1664e05df3b1SJaegeuk Kim 1665cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1666cfe58f9dSJaegeuk Kim { 1667028a63a6SJan Kara pgoff_t index = 0; 1668cfe58f9dSJaegeuk Kim struct pagevec pvec; 1669280db3c8SMiklos Szeredi int ret2, ret = 0; 1670028a63a6SJan Kara int nr_pages; 1671cfe58f9dSJaegeuk Kim 167286679820SMel Gorman pagevec_init(&pvec); 16734ef51a8fSJaegeuk Kim 1674028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 167567fd707fSJan Kara PAGECACHE_TAG_WRITEBACK))) { 1676028a63a6SJan Kara int i; 1677cfe58f9dSJaegeuk Kim 1678cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1679cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1680cfe58f9dSJaegeuk Kim 16814bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1682fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1683cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1684cfe58f9dSJaegeuk Kim ret = -EIO; 1685cfe58f9dSJaegeuk Kim } 16864bf08ff6SChao Yu } 1687cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1688cfe58f9dSJaegeuk Kim cond_resched(); 1689cfe58f9dSJaegeuk Kim } 1690cfe58f9dSJaegeuk Kim 1691280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1692cfe58f9dSJaegeuk Kim if (!ret) 1693cfe58f9dSJaegeuk Kim ret = ret2; 1694cfe58f9dSJaegeuk Kim return ret; 1695cfe58f9dSJaegeuk Kim } 1696cfe58f9dSJaegeuk Kim 1697e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1698e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1699e05df3b1SJaegeuk Kim { 17004081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 17019dfa1bafSJaegeuk Kim struct blk_plug plug; 170250c8cdb3SJaegeuk Kim long diff; 1703e05df3b1SJaegeuk Kim 17040771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 17050771fcc7SChao Yu goto skip_write; 17060771fcc7SChao Yu 17074660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 17084660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1709e05df3b1SJaegeuk Kim 1710a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 171187d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1712d3baf95dSJaegeuk Kim goto skip_write; 1713a7fdffbdSJaegeuk Kim 1714d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1715d31c7c3fSYunlei He 171650c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1717fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 17189dfa1bafSJaegeuk Kim blk_start_plug(&plug); 1719b0af6d49SChao Yu sync_node_pages(sbi, wbc, true, FS_NODE_IO); 17209dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 172150c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1722e05df3b1SJaegeuk Kim return 0; 1723d3baf95dSJaegeuk Kim 1724d3baf95dSJaegeuk Kim skip_write: 1725d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1726d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1727d3baf95dSJaegeuk Kim return 0; 1728e05df3b1SJaegeuk Kim } 1729e05df3b1SJaegeuk Kim 1730e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1731e05df3b1SJaegeuk Kim { 173226c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 173326c6b887SJaegeuk Kim 1734237c0790SJaegeuk Kim if (!PageUptodate(page)) 1735e05df3b1SJaegeuk Kim SetPageUptodate(page); 1736e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1737fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 17384081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1739e05df3b1SJaegeuk Kim SetPagePrivate(page); 17409e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1741e05df3b1SJaegeuk Kim return 1; 1742e05df3b1SJaegeuk Kim } 1743e05df3b1SJaegeuk Kim return 0; 1744e05df3b1SJaegeuk Kim } 1745e05df3b1SJaegeuk Kim 17460a8165d7SJaegeuk Kim /* 1747e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1748e05df3b1SJaegeuk Kim */ 1749e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1750e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1751e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1752e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1753487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1754487261f3SChao Yu .releasepage = f2fs_release_page, 17555b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 17565b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 17575b7a487cSWeichao Guo #endif 1758e05df3b1SJaegeuk Kim }; 1759e05df3b1SJaegeuk Kim 17608a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 17618a7ed66aSJaegeuk Kim nid_t n) 1762e05df3b1SJaegeuk Kim { 17638a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 17643aa770a9SNamjae Jeon } 1765e05df3b1SJaegeuk Kim 17669a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1767a0761f63SFan Li struct free_nid *i, enum nid_state state) 1768e05df3b1SJaegeuk Kim { 1769b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1770b8559dc2SChao Yu 1771eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1772eb0aa4b8SJaegeuk Kim if (err) 1773eb0aa4b8SJaegeuk Kim return err; 1774eb0aa4b8SJaegeuk Kim 17759a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 17769a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 17779a4ffdf5SChao Yu if (state == FREE_NID) 17789a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1779eb0aa4b8SJaegeuk Kim return 0; 1780b8559dc2SChao Yu } 1781b8559dc2SChao Yu 17829a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 1783a0761f63SFan Li struct free_nid *i, enum nid_state state) 1784b8559dc2SChao Yu { 1785b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1786b8559dc2SChao Yu 17879a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 17889a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 17899a4ffdf5SChao Yu if (state == FREE_NID) 1790e05df3b1SJaegeuk Kim list_del(&i->list); 17918a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1792e05df3b1SJaegeuk Kim } 1793e05df3b1SJaegeuk Kim 1794a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 1795a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 1796a0761f63SFan Li { 1797a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1798a0761f63SFan Li 1799a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 1800a0761f63SFan Li i->state = dst_state; 1801a0761f63SFan Li nm_i->nid_cnt[org_state]--; 1802a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 1803a0761f63SFan Li 1804a0761f63SFan Li switch (dst_state) { 1805a0761f63SFan Li case PREALLOC_NID: 1806a0761f63SFan Li list_del(&i->list); 1807a0761f63SFan Li break; 1808a0761f63SFan Li case FREE_NID: 1809a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 1810a0761f63SFan Li break; 1811a0761f63SFan Li default: 1812a0761f63SFan Li BUG_ON(1); 1813a0761f63SFan Li } 1814a0761f63SFan Li } 1815a0761f63SFan Li 18165921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 18175921aaa1SLiFan bool set, bool build) 18185921aaa1SLiFan { 18195921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 18205921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 18215921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 18225921aaa1SLiFan 18235921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 18245921aaa1SLiFan return; 18255921aaa1SLiFan 18265921aaa1SLiFan if (set) { 18275921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 18285921aaa1SLiFan return; 18295921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18305921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 18315921aaa1SLiFan } else { 18325921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 18335921aaa1SLiFan return; 18345921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18355921aaa1SLiFan if (!build) 18365921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 18375921aaa1SLiFan } 18385921aaa1SLiFan } 18395921aaa1SLiFan 18404ac91242SChao Yu /* return if the nid is recognized as free */ 18415921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 18425921aaa1SLiFan nid_t nid, bool build, bool update) 1843e05df3b1SJaegeuk Kim { 18446fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 184530a61ddfSChao Yu struct free_nid *i, *e; 184659bbd474SJaegeuk Kim struct nat_entry *ne; 184730a61ddfSChao Yu int err = -EINVAL; 184830a61ddfSChao Yu bool ret = false; 18499198acebSJaegeuk Kim 18509198acebSJaegeuk Kim /* 0 nid should not be used */ 1851cfb271d4SChao Yu if (unlikely(nid == 0)) 18524ac91242SChao Yu return false; 185359bbd474SJaegeuk Kim 18547bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1855e05df3b1SJaegeuk Kim i->nid = nid; 18569a4ffdf5SChao Yu i->state = FREE_NID; 1857e05df3b1SJaegeuk Kim 18585921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 1859769ec6e5SJaegeuk Kim 1860b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 186130a61ddfSChao Yu 186230a61ddfSChao Yu if (build) { 186330a61ddfSChao Yu /* 186430a61ddfSChao Yu * Thread A Thread B 186530a61ddfSChao Yu * - f2fs_create 186630a61ddfSChao Yu * - f2fs_new_inode 186730a61ddfSChao Yu * - alloc_nid 18689a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 186930a61ddfSChao Yu * - f2fs_balance_fs_bg 187030a61ddfSChao Yu * - build_free_nids 187130a61ddfSChao Yu * - __build_free_nids 187230a61ddfSChao Yu * - scan_nat_page 187330a61ddfSChao Yu * - add_free_nid 187430a61ddfSChao Yu * - __lookup_nat_cache 187530a61ddfSChao Yu * - f2fs_add_link 187630a61ddfSChao Yu * - init_inode_metadata 187730a61ddfSChao Yu * - new_inode_page 187830a61ddfSChao Yu * - new_node_page 187930a61ddfSChao Yu * - set_node_addr 188030a61ddfSChao Yu * - alloc_nid_done 18819a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 18829a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 188330a61ddfSChao Yu */ 188430a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 188530a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 188630a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 188730a61ddfSChao Yu goto err_out; 188830a61ddfSChao Yu 188930a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 189030a61ddfSChao Yu if (e) { 18919a4ffdf5SChao Yu if (e->state == FREE_NID) 189230a61ddfSChao Yu ret = true; 189330a61ddfSChao Yu goto err_out; 189430a61ddfSChao Yu } 189530a61ddfSChao Yu } 189630a61ddfSChao Yu ret = true; 1897a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 189830a61ddfSChao Yu err_out: 18995921aaa1SLiFan if (update) { 19005921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 19015921aaa1SLiFan if (!build) 19025921aaa1SLiFan nm_i->available_nids++; 19035921aaa1SLiFan } 1904b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1905769ec6e5SJaegeuk Kim radix_tree_preload_end(); 19065921aaa1SLiFan 190730a61ddfSChao Yu if (err) 1908e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 190930a61ddfSChao Yu return ret; 1910e05df3b1SJaegeuk Kim } 1911e05df3b1SJaegeuk Kim 1912b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 1913e05df3b1SJaegeuk Kim { 1914b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1915e05df3b1SJaegeuk Kim struct free_nid *i; 1916cf0ee0f0SChao Yu bool need_free = false; 1917cf0ee0f0SChao Yu 1918b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 19198a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 19209a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 1921a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 1922cf0ee0f0SChao Yu need_free = true; 1923e05df3b1SJaegeuk Kim } 1924b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1925cf0ee0f0SChao Yu 1926cf0ee0f0SChao Yu if (need_free) 1927cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1928e05df3b1SJaegeuk Kim } 1929e05df3b1SJaegeuk Kim 19306fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1931e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1932e05df3b1SJaegeuk Kim { 19336fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1934e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1935e05df3b1SJaegeuk Kim block_t blk_addr; 19364ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 1937e05df3b1SJaegeuk Kim int i; 1938e05df3b1SJaegeuk Kim 193923380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 19404ac91242SChao Yu 1941e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1942e05df3b1SJaegeuk Kim 1943e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 1944cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 194504431c44SJaegeuk Kim break; 194623d38844SHaicheng Li 1947e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 19489850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 19495921aaa1SLiFan if (blk_addr == NULL_ADDR) { 19505921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 19515921aaa1SLiFan } else { 1952346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 19535921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 1954346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 1955e05df3b1SJaegeuk Kim } 1956e05df3b1SJaegeuk Kim } 19575921aaa1SLiFan } 1958e05df3b1SJaegeuk Kim 19592fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 19604ac91242SChao Yu { 19614ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 19624ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 19632fbaa25fSChao Yu int i; 19644ac91242SChao Yu 19654ac91242SChao Yu down_read(&curseg->journal_rwsem); 19664ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 19674ac91242SChao Yu block_t addr; 19684ac91242SChao Yu nid_t nid; 19694ac91242SChao Yu 19704ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 19714ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 19724ac91242SChao Yu if (addr == NULL_ADDR) 19735921aaa1SLiFan add_free_nid(sbi, nid, true, false); 19744ac91242SChao Yu else 19754ac91242SChao Yu remove_free_nid(sbi, nid); 19764ac91242SChao Yu } 19774ac91242SChao Yu up_read(&curseg->journal_rwsem); 19782fbaa25fSChao Yu } 19792fbaa25fSChao Yu 1980e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 19814ac91242SChao Yu { 19824ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 19834ac91242SChao Yu unsigned int i, idx; 198497456574SFan Li nid_t nid; 19854ac91242SChao Yu 19864ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 19874ac91242SChao Yu 19884ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 19894ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 19904ac91242SChao Yu continue; 19914ac91242SChao Yu if (!nm_i->free_nid_count[i]) 19924ac91242SChao Yu continue; 19934ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 199497456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 199597456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 199697456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 199797456574SFan Li break; 19984ac91242SChao Yu 19994ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 20005921aaa1SLiFan add_free_nid(sbi, nid, true, false); 20014ac91242SChao Yu 20029a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 20034ac91242SChao Yu goto out; 20044ac91242SChao Yu } 20054ac91242SChao Yu } 20064ac91242SChao Yu out: 20072fbaa25fSChao Yu scan_curseg_cache(sbi); 20084ac91242SChao Yu 20094ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 20104ac91242SChao Yu } 20114ac91242SChao Yu 201222ad0b6aSJaegeuk Kim static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 2013e05df3b1SJaegeuk Kim { 2014e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 20158760952dSHaicheng Li int i = 0; 201655008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2017e05df3b1SJaegeuk Kim 2018e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2019e9cdd307SYunlei He nid = 0; 2020e9cdd307SYunlei He 202155008d84SJaegeuk Kim /* Enough entries */ 20229a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 202355008d84SJaegeuk Kim return; 2024e05df3b1SJaegeuk Kim 20253a2ad567SChao Yu if (!sync && !available_free_memory(sbi, FREE_NIDS)) 2026e05df3b1SJaegeuk Kim return; 2027e05df3b1SJaegeuk Kim 20284ac91242SChao Yu if (!mount) { 20294ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 20304ac91242SChao Yu scan_free_nid_bits(sbi); 20314ac91242SChao Yu 203274986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 203322ad0b6aSJaegeuk Kim return; 203422ad0b6aSJaegeuk Kim } 203522ad0b6aSJaegeuk Kim 203655008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 203726879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 203826879fb1SChao Yu META_NAT, true); 2039e05df3b1SJaegeuk Kim 2040b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2041a5131193SJaegeuk Kim 2042e05df3b1SJaegeuk Kim while (1) { 204366e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 204466e83361SYunlei He nm_i->nat_block_bitmap)) { 2045e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2046e05df3b1SJaegeuk Kim 20476fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 2048e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 204966e83361SYunlei He } 2050e05df3b1SJaegeuk Kim 2051e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2052cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2053e05df3b1SJaegeuk Kim nid = 0; 205455008d84SJaegeuk Kim 2055a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2056e05df3b1SJaegeuk Kim break; 2057e05df3b1SJaegeuk Kim } 2058e05df3b1SJaegeuk Kim 205955008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 206055008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2061e05df3b1SJaegeuk Kim 2062e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 20632fbaa25fSChao Yu scan_curseg_cache(sbi); 2064dfc08a12SChao Yu 2065b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 20662db2388fSChao Yu 20672db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2068ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2069e05df3b1SJaegeuk Kim } 2070e05df3b1SJaegeuk Kim 207122ad0b6aSJaegeuk Kim void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 20722411cf5bSChao Yu { 20732411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 207422ad0b6aSJaegeuk Kim __build_free_nids(sbi, sync, mount); 20752411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 20762411cf5bSChao Yu } 20772411cf5bSChao Yu 2078e05df3b1SJaegeuk Kim /* 2079e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2080e05df3b1SJaegeuk Kim * from second parameter of this function. 2081e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2082e05df3b1SJaegeuk Kim */ 2083e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2084e05df3b1SJaegeuk Kim { 2085e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2086e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2087e05df3b1SJaegeuk Kim retry: 2088cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 208955523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 209055523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2091cb78942bSJaegeuk Kim return false; 209255523519SChao Yu } 2093cb78942bSJaegeuk Kim #endif 2094b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2095e05df3b1SJaegeuk Kim 209604d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 209704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 209804d47e67SChao Yu return false; 209904d47e67SChao Yu } 2100e05df3b1SJaegeuk Kim 210155008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 21029a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_build_free_nids(nm_i)) { 21039a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 21049a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2105b8559dc2SChao Yu struct free_nid, list); 2106e05df3b1SJaegeuk Kim *nid = i->nid; 2107b8559dc2SChao Yu 2108a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 210904d47e67SChao Yu nm_i->available_nids--; 21104ac91242SChao Yu 2111346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 21124ac91242SChao Yu 2113b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2114e05df3b1SJaegeuk Kim return true; 2115e05df3b1SJaegeuk Kim } 2116b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 211755008d84SJaegeuk Kim 211855008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 211922ad0b6aSJaegeuk Kim build_free_nids(sbi, true, false); 212055008d84SJaegeuk Kim goto retry; 212155008d84SJaegeuk Kim } 2122e05df3b1SJaegeuk Kim 21230a8165d7SJaegeuk Kim /* 2124e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2125e05df3b1SJaegeuk Kim */ 2126e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2127e05df3b1SJaegeuk Kim { 2128e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2129e05df3b1SJaegeuk Kim struct free_nid *i; 2130e05df3b1SJaegeuk Kim 2131b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21328a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2133b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2134a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2135b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2136cf0ee0f0SChao Yu 2137cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2138e05df3b1SJaegeuk Kim } 2139e05df3b1SJaegeuk Kim 21400a8165d7SJaegeuk Kim /* 2141e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2142e05df3b1SJaegeuk Kim */ 2143e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2144e05df3b1SJaegeuk Kim { 214549952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 214649952fa1SJaegeuk Kim struct free_nid *i; 2147cf0ee0f0SChao Yu bool need_free = false; 214849952fa1SJaegeuk Kim 214965985d93SJaegeuk Kim if (!nid) 215065985d93SJaegeuk Kim return; 215165985d93SJaegeuk Kim 2152b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21538a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2154b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2155b8559dc2SChao Yu 21566fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 2157a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2158cf0ee0f0SChao Yu need_free = true; 215995630cbaSHaicheng Li } else { 2160a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 216195630cbaSHaicheng Li } 216204d47e67SChao Yu 216304d47e67SChao Yu nm_i->available_nids++; 216404d47e67SChao Yu 2165346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 21664ac91242SChao Yu 2167b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2168cf0ee0f0SChao Yu 2169cf0ee0f0SChao Yu if (need_free) 2170cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2171e05df3b1SJaegeuk Kim } 2172e05df3b1SJaegeuk Kim 217331696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 217431696580SChao Yu { 217531696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 217631696580SChao Yu struct free_nid *i, *next; 217731696580SChao Yu int nr = nr_shrink; 217831696580SChao Yu 21799a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2180ad4edb83SJaegeuk Kim return 0; 2181ad4edb83SJaegeuk Kim 218231696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 218331696580SChao Yu return 0; 218431696580SChao Yu 2185b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21869a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2187b8559dc2SChao Yu if (nr_shrink <= 0 || 21889a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 218931696580SChao Yu break; 2190b8559dc2SChao Yu 2191a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 219231696580SChao Yu kmem_cache_free(free_nid_slab, i); 219331696580SChao Yu nr_shrink--; 219431696580SChao Yu } 2195b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 219631696580SChao Yu mutex_unlock(&nm_i->build_lock); 219731696580SChao Yu 219831696580SChao Yu return nr - nr_shrink; 219931696580SChao Yu } 220031696580SChao Yu 220170cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 220228cdce04SChao Yu { 220328cdce04SChao Yu void *src_addr, *dst_addr; 220428cdce04SChao Yu size_t inline_size; 220528cdce04SChao Yu struct page *ipage; 220628cdce04SChao Yu struct f2fs_inode *ri; 220728cdce04SChao Yu 22084081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 22099850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 221028cdce04SChao Yu 2211e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 22121eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 22131eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 22141eca05aaSYunlei He } else { 221591942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2216e3b4d43fSJaegeuk Kim goto update_inode; 2217e3b4d43fSJaegeuk Kim } 2218e3b4d43fSJaegeuk Kim 22196afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 22206afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 222128cdce04SChao Yu inline_size = inline_xattr_size(inode); 222228cdce04SChao Yu 2223fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 222428cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2225e3b4d43fSJaegeuk Kim update_inode: 222628cdce04SChao Yu update_inode(inode, ipage); 222728cdce04SChao Yu f2fs_put_page(ipage, 1); 222828cdce04SChao Yu } 222928cdce04SChao Yu 2230e17d488bSSheng Yong int recover_xattr_data(struct inode *inode, struct page *page) 2231abb2366cSJaegeuk Kim { 22324081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2233abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 223487905682SYunlei He nid_t new_xnid; 223587905682SYunlei He struct dnode_of_data dn; 2236abb2366cSJaegeuk Kim struct node_info ni; 2237d260081cSChao Yu struct page *xpage; 2238abb2366cSJaegeuk Kim 2239abb2366cSJaegeuk Kim if (!prev_xnid) 2240abb2366cSJaegeuk Kim goto recover_xnid; 2241abb2366cSJaegeuk Kim 2242d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2243abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 2244abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 2245000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2246479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2247abb2366cSJaegeuk Kim 2248abb2366cSJaegeuk Kim recover_xnid: 2249d260081cSChao Yu /* 2: update xattr nid in inode */ 225087905682SYunlei He if (!alloc_nid(sbi, &new_xnid)) 225187905682SYunlei He return -ENOSPC; 225287905682SYunlei He 225387905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 225487905682SYunlei He xpage = new_node_page(&dn, XATTR_NODE_OFFSET); 225587905682SYunlei He if (IS_ERR(xpage)) { 225687905682SYunlei He alloc_nid_failed(sbi, new_xnid); 225787905682SYunlei He return PTR_ERR(xpage); 225887905682SYunlei He } 225987905682SYunlei He 226087905682SYunlei He alloc_nid_done(sbi, new_xnid); 2261d260081cSChao Yu update_inode_page(inode); 2262abb2366cSJaegeuk Kim 2263d260081cSChao Yu /* 3: update and set xattr node page dirty */ 226487905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2265d260081cSChao Yu 2266d260081cSChao Yu set_page_dirty(xpage); 2267d260081cSChao Yu f2fs_put_page(xpage, 1); 2268abb2366cSJaegeuk Kim 2269d260081cSChao Yu return 0; 2270abb2366cSJaegeuk Kim } 2271abb2366cSJaegeuk Kim 2272e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2273e05df3b1SJaegeuk Kim { 227458bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2275e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2276e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2277e05df3b1SJaegeuk Kim struct page *ipage; 2278e05df3b1SJaegeuk Kim 2279e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2280e8271fa3SJaegeuk Kim 2281e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2282e8271fa3SJaegeuk Kim return -EINVAL; 2283e8ea9b3dSJaegeuk Kim retry: 2284300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2285e8ea9b3dSJaegeuk Kim if (!ipage) { 2286e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2287e8ea9b3dSJaegeuk Kim goto retry; 2288e8ea9b3dSJaegeuk Kim } 2289e05df3b1SJaegeuk Kim 2290e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2291b8559dc2SChao Yu remove_free_nid(sbi, ino); 2292e05df3b1SJaegeuk Kim 2293237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2294e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2295e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2296e05df3b1SJaegeuk Kim 229758bfaf44SJaegeuk Kim src = F2FS_INODE(page); 229858bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2299e05df3b1SJaegeuk Kim 230058bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 230158bfaf44SJaegeuk Kim dst->i_size = 0; 230258bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 230358bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 230458bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 23057a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 23065c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 23077a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 23086afc662eSChao Yu 23096afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 23106afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23116afc662eSChao Yu i_inline_xattr_size)) 23126afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 23136afc662eSChao Yu 23145c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 23155c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23165c57132eSChao Yu i_projid)) 23175c57132eSChao Yu dst->i_projid = src->i_projid; 23185c57132eSChao Yu } 2319e05df3b1SJaegeuk Kim 2320e05df3b1SJaegeuk Kim new_ni = old_ni; 2321e05df3b1SJaegeuk Kim new_ni.ino = ino; 2322e05df3b1SJaegeuk Kim 23230abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 232465e5cd0aSJaegeuk Kim WARN_ON(1); 2325479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2326e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2327617deb8cSJaegeuk Kim set_page_dirty(ipage); 2328e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2329e05df3b1SJaegeuk Kim return 0; 2330e05df3b1SJaegeuk Kim } 2331e05df3b1SJaegeuk Kim 2332c376fc0fSYunlei He void restore_node_summary(struct f2fs_sb_info *sbi, 2333e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2334e05df3b1SJaegeuk Kim { 2335e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2336e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2337e05df3b1SJaegeuk Kim block_t addr; 23389ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2339e05df3b1SJaegeuk Kim 2340e05df3b1SJaegeuk Kim /* scan the node segment */ 2341e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2342e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2343e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2344e05df3b1SJaegeuk Kim 23459ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2346664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2347393ff91fSJaegeuk Kim 23489af0ff1cSChao Yu /* readahead node pages */ 234926879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 23509af0ff1cSChao Yu 23519ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 23522b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2353393ff91fSJaegeuk Kim 23549ecf4b80SChao Yu rn = F2FS_NODE(page); 2355393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2356393ff91fSJaegeuk Kim sum_entry->version = 0; 2357393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 23589af0ff1cSChao Yu sum_entry++; 23599ecf4b80SChao Yu f2fs_put_page(page, 1); 23609af0ff1cSChao Yu } 2361bac4eef6SChao Yu 23629ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2363bac4eef6SChao Yu addr + nrpages); 23649af0ff1cSChao Yu } 2365e05df3b1SJaegeuk Kim } 2366e05df3b1SJaegeuk Kim 2367aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2368e05df3b1SJaegeuk Kim { 2369e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2370e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2371b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2372e05df3b1SJaegeuk Kim int i; 2373e05df3b1SJaegeuk Kim 2374b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2375dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2376e05df3b1SJaegeuk Kim struct nat_entry *ne; 2377e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2378dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2379e05df3b1SJaegeuk Kim 2380dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 23819be32d72SJaegeuk Kim 2382e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2383e05df3b1SJaegeuk Kim if (!ne) { 238412f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 238512f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 23869be32d72SJaegeuk Kim } 238704d47e67SChao Yu 238804d47e67SChao Yu /* 238904d47e67SChao Yu * if a free nat in journal has not been used after last 239004d47e67SChao Yu * checkpoint, we should remove it from available nids, 239104d47e67SChao Yu * since later we will add it again. 239204d47e67SChao Yu */ 239304d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 239404d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 239504d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 239604d47e67SChao Yu nm_i->available_nids--; 239704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 239804d47e67SChao Yu } 239904d47e67SChao Yu 2400e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2401e05df3b1SJaegeuk Kim } 2402dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2403b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2404e05df3b1SJaegeuk Kim } 2405e05df3b1SJaegeuk Kim 2406309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2407309cc2b6SJaegeuk Kim struct list_head *head, int max) 2408e05df3b1SJaegeuk Kim { 2409309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2410e05df3b1SJaegeuk Kim 2411309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2412309cc2b6SJaegeuk Kim goto add_out; 2413e05df3b1SJaegeuk Kim 2414309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2415309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2416309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2417309cc2b6SJaegeuk Kim return; 2418309cc2b6SJaegeuk Kim } 2419309cc2b6SJaegeuk Kim } 2420309cc2b6SJaegeuk Kim add_out: 2421309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2422aec71382SChao Yu } 2423aec71382SChao Yu 24249f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 242522ad0b6aSJaegeuk Kim struct page *page) 242622ad0b6aSJaegeuk Kim { 242722ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 242822ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 242922ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 243022ad0b6aSJaegeuk Kim int valid = 0; 243137a0ab2aSFan Li int i = 0; 243222ad0b6aSJaegeuk Kim 243322ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 243422ad0b6aSJaegeuk Kim return; 243522ad0b6aSJaegeuk Kim 243637a0ab2aSFan Li if (nat_index == 0) { 243737a0ab2aSFan Li valid = 1; 243837a0ab2aSFan Li i = 1; 243937a0ab2aSFan Li } 244037a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 244137a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 244222ad0b6aSJaegeuk Kim valid++; 244322ad0b6aSJaegeuk Kim } 244422ad0b6aSJaegeuk Kim if (valid == 0) { 244523380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 244623380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 244722ad0b6aSJaegeuk Kim return; 244822ad0b6aSJaegeuk Kim } 244922ad0b6aSJaegeuk Kim 245023380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 245122ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 245223380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 245322ad0b6aSJaegeuk Kim else 245423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 245522ad0b6aSJaegeuk Kim } 245622ad0b6aSJaegeuk Kim 2457309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 245822ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2459309cc2b6SJaegeuk Kim { 2460309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2461b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2462309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2463309cc2b6SJaegeuk Kim bool to_journal = true; 2464309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2465309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2466309cc2b6SJaegeuk Kim struct page *page = NULL; 2467aec71382SChao Yu 2468aec71382SChao Yu /* 2469aec71382SChao Yu * there are two steps to flush nat entries: 2470aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2471aec71382SChao Yu * #2, flush nat entries to nat page. 2472aec71382SChao Yu */ 247322ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 247422ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2475aec71382SChao Yu to_journal = false; 2476aec71382SChao Yu 2477aec71382SChao Yu if (to_journal) { 2478b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2479aec71382SChao Yu } else { 2480e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2481e05df3b1SJaegeuk Kim nat_blk = page_address(page); 24829850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2483e05df3b1SJaegeuk Kim } 2484e05df3b1SJaegeuk Kim 2485aec71382SChao Yu /* flush dirty nats in nat entry set */ 2486309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2487aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2488aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2489aec71382SChao Yu int offset; 2490aec71382SChao Yu 2491febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2492309cc2b6SJaegeuk Kim 2493aec71382SChao Yu if (to_journal) { 2494dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2495aec71382SChao Yu NAT_JOURNAL, nid, 1); 24969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2497dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2498dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2499aec71382SChao Yu } else { 2500aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2501aec71382SChao Yu } 2502aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 250388bd02c9SJaegeuk Kim nat_reset_flag(ne); 25040b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 250504d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 25065921aaa1SLiFan add_free_nid(sbi, nid, false, true); 25074ac91242SChao Yu } else { 25084ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2509346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 251004d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 251104d47e67SChao Yu } 2512e05df3b1SJaegeuk Kim } 2513aec71382SChao Yu 251422ad0b6aSJaegeuk Kim if (to_journal) { 2515b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 251622ad0b6aSJaegeuk Kim } else { 251722ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2518e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 251922ad0b6aSJaegeuk Kim } 2520aec71382SChao Yu 252159c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 252259c9081bSYunlei He if (!set->entry_cnt) { 2523309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2524309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2525309cc2b6SJaegeuk Kim } 252659c9081bSYunlei He } 2527aec71382SChao Yu 2528309cc2b6SJaegeuk Kim /* 2529309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2530309cc2b6SJaegeuk Kim */ 253122ad0b6aSJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2532309cc2b6SJaegeuk Kim { 2533309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2534309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2535b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 25367aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2537309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2538309cc2b6SJaegeuk Kim unsigned int found; 2539309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2540309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2541309cc2b6SJaegeuk Kim 254220d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 254320d047c8SChangman Lee return; 2544a5131193SJaegeuk Kim 2545b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2546a5131193SJaegeuk Kim 2547309cc2b6SJaegeuk Kim /* 2548309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2549309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2550309cc2b6SJaegeuk Kim * into nat entry set. 2551309cc2b6SJaegeuk Kim */ 2552900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 255322ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2554309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2555309cc2b6SJaegeuk Kim 2556309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 25577aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2558309cc2b6SJaegeuk Kim unsigned idx; 2559309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2560309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2561309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2562dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2563309cc2b6SJaegeuk Kim } 2564309cc2b6SJaegeuk Kim 2565309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2566309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 256722ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2568309cc2b6SJaegeuk Kim 2569b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 257059c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2571e05df3b1SJaegeuk Kim } 2572e05df3b1SJaegeuk Kim 257322ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 257422ad0b6aSJaegeuk Kim { 257522ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 257622ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 257722ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 257822ad0b6aSJaegeuk Kim unsigned int i; 257922ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 258022ad0b6aSJaegeuk Kim block_t nat_bits_addr; 258122ad0b6aSJaegeuk Kim 258222ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 258322ad0b6aSJaegeuk Kim return 0; 258422ad0b6aSJaegeuk Kim 258522ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + 258622ad0b6aSJaegeuk Kim F2FS_BLKSIZE - 1); 2587acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2588acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 258922ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 259022ad0b6aSJaegeuk Kim return -ENOMEM; 259122ad0b6aSJaegeuk Kim 259222ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 259322ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 259422ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 259522ad0b6aSJaegeuk Kim struct page *page = get_meta_page(sbi, nat_bits_addr++); 259622ad0b6aSJaegeuk Kim 259722ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 259822ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 259922ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 260022ad0b6aSJaegeuk Kim } 260122ad0b6aSJaegeuk Kim 2602ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 260322ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 260422ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 260522ad0b6aSJaegeuk Kim return 0; 260622ad0b6aSJaegeuk Kim } 260722ad0b6aSJaegeuk Kim 260822ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 260922ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 261022ad0b6aSJaegeuk Kim 261122ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 261222ad0b6aSJaegeuk Kim return 0; 261322ad0b6aSJaegeuk Kim } 261422ad0b6aSJaegeuk Kim 2615bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 26167041d5d2SChao Yu { 26177041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 26187041d5d2SChao Yu unsigned int i = 0; 26197041d5d2SChao Yu nid_t nid, last_nid; 26207041d5d2SChao Yu 26217041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 26227041d5d2SChao Yu return; 26237041d5d2SChao Yu 26247041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26257041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 26267041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26277041d5d2SChao Yu break; 26287041d5d2SChao Yu 26297041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26307041d5d2SChao Yu 26317041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2632f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 26337041d5d2SChao Yu 2634346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 26357041d5d2SChao Yu for (; nid < last_nid; nid++) 2636346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2637346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 26387041d5d2SChao Yu } 26397041d5d2SChao Yu 26407041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26417041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 26427041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26437041d5d2SChao Yu break; 26447041d5d2SChao Yu 26457041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26467041d5d2SChao Yu } 26477041d5d2SChao Yu } 26487041d5d2SChao Yu 2649e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2650e05df3b1SJaegeuk Kim { 2651e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2652e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2653e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 265422ad0b6aSJaegeuk Kim unsigned int nat_segs; 265522ad0b6aSJaegeuk Kim int err; 2656e05df3b1SJaegeuk Kim 2657e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2658e05df3b1SJaegeuk Kim 2659e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2660e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 266122ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 266222ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 26637ee0eeabSJaegeuk Kim 2664b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 266504d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2666292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 26679a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 26689a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2669e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2670cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2671ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 26722304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2673e05df3b1SJaegeuk Kim 26748a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 26759a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2676769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2677769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2678e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2679e05df3b1SJaegeuk Kim 2680e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2681b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2682b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2683e05df3b1SJaegeuk Kim 2684e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 268579b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2686e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2687e05df3b1SJaegeuk Kim if (!version_bitmap) 2688e05df3b1SJaegeuk Kim return -EFAULT; 2689e05df3b1SJaegeuk Kim 269079b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 269179b5793bSAlexandru Gheorghiu GFP_KERNEL); 269279b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 269379b5793bSAlexandru Gheorghiu return -ENOMEM; 2694599a09b2SChao Yu 269522ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 269622ad0b6aSJaegeuk Kim if (err) 269722ad0b6aSJaegeuk Kim return err; 269822ad0b6aSJaegeuk Kim 2699599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2700599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2701599a09b2SChao Yu GFP_KERNEL); 2702599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2703599a09b2SChao Yu return -ENOMEM; 2704599a09b2SChao Yu #endif 2705599a09b2SChao Yu 2706e05df3b1SJaegeuk Kim return 0; 2707e05df3b1SJaegeuk Kim } 2708e05df3b1SJaegeuk Kim 27099f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 27104ac91242SChao Yu { 27114ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 27124ac91242SChao Yu 2713628b3d14SChao Yu nm_i->free_nid_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks * 27144ac91242SChao Yu NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL); 27154ac91242SChao Yu if (!nm_i->free_nid_bitmap) 27164ac91242SChao Yu return -ENOMEM; 27174ac91242SChao Yu 2718628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 27194ac91242SChao Yu GFP_KERNEL); 27204ac91242SChao Yu if (!nm_i->nat_block_bitmap) 27214ac91242SChao Yu return -ENOMEM; 2722586d1492SChao Yu 2723628b3d14SChao Yu nm_i->free_nid_count = f2fs_kvzalloc(sbi, nm_i->nat_blocks * 2724586d1492SChao Yu sizeof(unsigned short), GFP_KERNEL); 2725586d1492SChao Yu if (!nm_i->free_nid_count) 2726586d1492SChao Yu return -ENOMEM; 27274ac91242SChao Yu return 0; 27284ac91242SChao Yu } 27294ac91242SChao Yu 2730e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2731e05df3b1SJaegeuk Kim { 2732e05df3b1SJaegeuk Kim int err; 2733e05df3b1SJaegeuk Kim 2734acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 2735acbf054dSChao Yu GFP_KERNEL); 2736e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2737e05df3b1SJaegeuk Kim return -ENOMEM; 2738e05df3b1SJaegeuk Kim 2739e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2740e05df3b1SJaegeuk Kim if (err) 2741e05df3b1SJaegeuk Kim return err; 2742e05df3b1SJaegeuk Kim 27434ac91242SChao Yu err = init_free_nid_cache(sbi); 27444ac91242SChao Yu if (err) 27454ac91242SChao Yu return err; 27464ac91242SChao Yu 27477041d5d2SChao Yu /* load free nid status from nat_bits table */ 27487041d5d2SChao Yu load_free_nid_bitmap(sbi); 27497041d5d2SChao Yu 275022ad0b6aSJaegeuk Kim build_free_nids(sbi, true, true); 2751e05df3b1SJaegeuk Kim return 0; 2752e05df3b1SJaegeuk Kim } 2753e05df3b1SJaegeuk Kim 2754e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2755e05df3b1SJaegeuk Kim { 2756e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2757e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2758e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 27597aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2760e05df3b1SJaegeuk Kim nid_t nid = 0; 2761e05df3b1SJaegeuk Kim unsigned int found; 2762e05df3b1SJaegeuk Kim 2763e05df3b1SJaegeuk Kim if (!nm_i) 2764e05df3b1SJaegeuk Kim return; 2765e05df3b1SJaegeuk Kim 2766e05df3b1SJaegeuk Kim /* destroy free nid list */ 2767b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 27689a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 2769a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2770b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2771cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2772b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2773e05df3b1SJaegeuk Kim } 27749a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 27759a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 27769a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 2777b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2778e05df3b1SJaegeuk Kim 2779e05df3b1SJaegeuk Kim /* destroy nat cache */ 2780b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2781e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2782e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2783e05df3b1SJaegeuk Kim unsigned idx; 27847aed0d45SJaegeuk Kim 2785b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2786b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2787b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2788e05df3b1SJaegeuk Kim } 27899850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 27907aed0d45SJaegeuk Kim 27917aed0d45SJaegeuk Kim /* destroy nat set cache */ 27927aed0d45SJaegeuk Kim nid = 0; 27937aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 27947aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 27957aed0d45SJaegeuk Kim unsigned idx; 27967aed0d45SJaegeuk Kim 27977aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 27987aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 27997aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 28007aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 28017aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 28027aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 28037aed0d45SJaegeuk Kim } 28047aed0d45SJaegeuk Kim } 2805b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2806e05df3b1SJaegeuk Kim 28074ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 28084ac91242SChao Yu kvfree(nm_i->free_nid_bitmap); 2809586d1492SChao Yu kvfree(nm_i->free_nid_count); 28104ac91242SChao Yu 2811e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 281222ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2813599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2814599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2815599a09b2SChao Yu #endif 2816e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2817e05df3b1SJaegeuk Kim kfree(nm_i); 2818e05df3b1SJaegeuk Kim } 2819e05df3b1SJaegeuk Kim 28206e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2821e05df3b1SJaegeuk Kim { 2822e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2823e8512d2eSGu Zheng sizeof(struct nat_entry)); 2824e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2825aec71382SChao Yu goto fail; 2826e05df3b1SJaegeuk Kim 2827e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2828e8512d2eSGu Zheng sizeof(struct free_nid)); 2829aec71382SChao Yu if (!free_nid_slab) 2830ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2831aec71382SChao Yu 2832aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2833aec71382SChao Yu sizeof(struct nat_entry_set)); 2834aec71382SChao Yu if (!nat_entry_set_slab) 2835ce3e6d25SMarkus Elfring goto destroy_free_nid; 2836e05df3b1SJaegeuk Kim return 0; 2837aec71382SChao Yu 2838ce3e6d25SMarkus Elfring destroy_free_nid: 2839aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2840ce3e6d25SMarkus Elfring destroy_nat_entry: 2841aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2842aec71382SChao Yu fail: 2843aec71382SChao Yu return -ENOMEM; 2844e05df3b1SJaegeuk Kim } 2845e05df3b1SJaegeuk Kim 2846e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2847e05df3b1SJaegeuk Kim { 2848aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2849e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2850e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2851e05df3b1SJaegeuk Kim } 2852