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) 1462882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 14712f9ef37SYunlei He else 1482882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 14912f9ef37SYunlei He if (new) { 15012f9ef37SYunlei He nat_set_nid(new, nid); 15112f9ef37SYunlei He nat_reset_flag(new); 15212f9ef37SYunlei He } 15312f9ef37SYunlei He return new; 15412f9ef37SYunlei He } 15512f9ef37SYunlei He 15612f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 15712f9ef37SYunlei He { 15812f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 15912f9ef37SYunlei He } 16012f9ef37SYunlei He 16112f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16212f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 16312f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 16412f9ef37SYunlei He { 16512f9ef37SYunlei He if (no_fail) 16612f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 16712f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 16812f9ef37SYunlei He return NULL; 16912f9ef37SYunlei He 17012f9ef37SYunlei He if (raw_ne) 17112f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17212f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 17312f9ef37SYunlei He nm_i->nat_cnt++; 17412f9ef37SYunlei He return ne; 17512f9ef37SYunlei He } 17612f9ef37SYunlei He 177e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 178e05df3b1SJaegeuk Kim { 179e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 180e05df3b1SJaegeuk Kim } 181e05df3b1SJaegeuk Kim 182e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 183e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 184e05df3b1SJaegeuk Kim { 185e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 186e05df3b1SJaegeuk Kim } 187e05df3b1SJaegeuk Kim 188e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 189e05df3b1SJaegeuk Kim { 190e05df3b1SJaegeuk Kim list_del(&e->list); 191e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 192e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 19312f9ef37SYunlei He __free_nat_entry(e); 194e05df3b1SJaegeuk Kim } 195e05df3b1SJaegeuk Kim 196780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 197309cc2b6SJaegeuk Kim struct nat_entry *ne) 198309cc2b6SJaegeuk Kim { 199309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 200309cc2b6SJaegeuk Kim struct nat_entry_set *head; 201309cc2b6SJaegeuk Kim 202309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 203309cc2b6SJaegeuk Kim if (!head) { 20480c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 205309cc2b6SJaegeuk Kim 206309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 207309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 208309cc2b6SJaegeuk Kim head->set = set; 209309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2109be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 211309cc2b6SJaegeuk Kim } 212780de47cSChao Yu return head; 213780de47cSChao Yu } 214780de47cSChao Yu 215780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 216780de47cSChao Yu struct nat_entry *ne) 217780de47cSChao Yu { 218780de47cSChao Yu struct nat_entry_set *head; 219780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 220780de47cSChao Yu 221780de47cSChao Yu if (!new_ne) 222780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 223780de47cSChao Yu 224780de47cSChao Yu /* 225780de47cSChao Yu * update entry_cnt in below condition: 226780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 227780de47cSChao Yu * 2. update old block address to new one; 228780de47cSChao Yu */ 229780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 230780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 231780de47cSChao Yu head->entry_cnt++; 232780de47cSChao Yu 233780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 234febeca6dSChao Yu 235febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 236febeca6dSChao Yu goto refresh_list; 237febeca6dSChao Yu 238309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 239309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 240febeca6dSChao Yu refresh_list: 241780de47cSChao Yu if (new_ne) 242febeca6dSChao Yu list_del_init(&ne->list); 243febeca6dSChao Yu else 244febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 245309cc2b6SJaegeuk Kim } 246309cc2b6SJaegeuk Kim 247309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2480b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 249309cc2b6SJaegeuk Kim { 250309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 251309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2520b28b71eSKinglong Mee set->entry_cnt--; 253309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 254309cc2b6SJaegeuk Kim } 255309cc2b6SJaegeuk Kim 256309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 257309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 258309cc2b6SJaegeuk Kim { 259309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 260309cc2b6SJaegeuk Kim start, nr); 261309cc2b6SJaegeuk Kim } 262309cc2b6SJaegeuk Kim 2632dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2642dcf51abSJaegeuk Kim { 2652dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2662dcf51abSJaegeuk Kim struct nat_entry *e; 2672dcf51abSJaegeuk Kim bool need = false; 2682dcf51abSJaegeuk Kim 269b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2702dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2712dcf51abSJaegeuk Kim if (e) { 2722dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2732dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2742dcf51abSJaegeuk Kim need = true; 2752dcf51abSJaegeuk Kim } 276b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2772dcf51abSJaegeuk Kim return need; 2782dcf51abSJaegeuk Kim } 2792dcf51abSJaegeuk Kim 28088bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 281e05df3b1SJaegeuk Kim { 282e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 283e05df3b1SJaegeuk Kim struct nat_entry *e; 28488bd02c9SJaegeuk Kim bool is_cp = true; 285e05df3b1SJaegeuk Kim 286b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 287e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2887ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 28988bd02c9SJaegeuk Kim is_cp = false; 290b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 291e05df3b1SJaegeuk Kim return is_cp; 292e05df3b1SJaegeuk Kim } 293e05df3b1SJaegeuk Kim 29488bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 295b6fe5873SJaegeuk Kim { 296b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 297b6fe5873SJaegeuk Kim struct nat_entry *e; 29888bd02c9SJaegeuk Kim bool need_update = true; 299b6fe5873SJaegeuk Kim 300b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 30188bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 30288bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 30388bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 30488bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 30588bd02c9SJaegeuk Kim need_update = false; 306b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 30788bd02c9SJaegeuk Kim return need_update; 308b6fe5873SJaegeuk Kim } 309b6fe5873SJaegeuk Kim 31012f9ef37SYunlei He /* must be locked by nat_tree_lock */ 3111515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 312e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 313e05df3b1SJaegeuk Kim { 3141515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31512f9ef37SYunlei He struct nat_entry *new, *e; 3169be32d72SJaegeuk Kim 31712f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 31812f9ef37SYunlei He if (!new) 31912f9ef37SYunlei He return; 32012f9ef37SYunlei He 32112f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 322e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 32312f9ef37SYunlei He if (!e) 32412f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 32512f9ef37SYunlei He else 3260c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 3270c0b471eSEric Biggers nat_get_blkaddr(e) != 3280c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 3291515aef0SChao Yu nat_get_version(e) != ne->version); 33012f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 33112f9ef37SYunlei He if (e != new) 33212f9ef37SYunlei He __free_nat_entry(new); 333e05df3b1SJaegeuk Kim } 334e05df3b1SJaegeuk Kim 335e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 336479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 337e05df3b1SJaegeuk Kim { 338e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 339e05df3b1SJaegeuk Kim struct nat_entry *e; 34012f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 3419be32d72SJaegeuk Kim 342b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 343e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 344e05df3b1SJaegeuk Kim if (!e) { 34512f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 3465c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3479850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 348e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 349e05df3b1SJaegeuk Kim /* 350e05df3b1SJaegeuk Kim * when nid is reallocated, 351e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 352e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 353e05df3b1SJaegeuk Kim */ 3545c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3559850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 356e05df3b1SJaegeuk Kim } 35712f9ef37SYunlei He /* let's free early to reduce memory consumption */ 35812f9ef37SYunlei He if (e != new) 35912f9ef37SYunlei He __free_nat_entry(new); 360e05df3b1SJaegeuk Kim 361e05df3b1SJaegeuk Kim /* sanity check */ 3629850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 364e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3659850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 366e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3679850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 368e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 369e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 370e05df3b1SJaegeuk Kim 371e1c42045Sarter97 /* increment version no as node is removed */ 372e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 373e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 374e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 375e05df3b1SJaegeuk Kim } 376e05df3b1SJaegeuk Kim 377e05df3b1SJaegeuk Kim /* change address */ 378e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 37988bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 38088bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 381e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 382479f40c4SJaegeuk Kim 383479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 384d5b692b7SChao Yu if (ni->nid != ni->ino) 385479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 38688bd02c9SJaegeuk Kim if (e) { 38788bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 38888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 38988bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 39088bd02c9SJaegeuk Kim } 391b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 392e05df3b1SJaegeuk Kim } 393e05df3b1SJaegeuk Kim 3944660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 395e05df3b1SJaegeuk Kim { 396e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3971b38dc8eSJaegeuk Kim int nr = nr_shrink; 398e05df3b1SJaegeuk Kim 399b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 400b873b798SJaegeuk Kim return 0; 401e05df3b1SJaegeuk Kim 402e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 403e05df3b1SJaegeuk Kim struct nat_entry *ne; 404e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 405e05df3b1SJaegeuk Kim struct nat_entry, list); 406e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 407e05df3b1SJaegeuk Kim nr_shrink--; 408e05df3b1SJaegeuk Kim } 409b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 4101b38dc8eSJaegeuk Kim return nr - nr_shrink; 411e05df3b1SJaegeuk Kim } 412e05df3b1SJaegeuk Kim 4130a8165d7SJaegeuk Kim /* 414e1c42045Sarter97 * This function always returns success 415e05df3b1SJaegeuk Kim */ 416e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 417e05df3b1SJaegeuk Kim { 418e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 419e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 420b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 421e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 422e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 423e05df3b1SJaegeuk Kim struct page *page = NULL; 424e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 425e05df3b1SJaegeuk Kim struct nat_entry *e; 42666a82d1fSYunlei He pgoff_t index; 427e05df3b1SJaegeuk Kim int i; 428e05df3b1SJaegeuk Kim 429e05df3b1SJaegeuk Kim ni->nid = nid; 430e05df3b1SJaegeuk Kim 431e05df3b1SJaegeuk Kim /* Check nat cache */ 432b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 433e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 434e05df3b1SJaegeuk Kim if (e) { 435e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 436e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 437e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 438b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 439e05df3b1SJaegeuk Kim return; 4401515aef0SChao Yu } 441e05df3b1SJaegeuk Kim 4423547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 4433547ea96SJaegeuk Kim 444e05df3b1SJaegeuk Kim /* Check current segment summary */ 445b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 446dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 447e05df3b1SJaegeuk Kim if (i >= 0) { 448dfc08a12SChao Yu ne = nat_in_journal(journal, i); 449e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 450e05df3b1SJaegeuk Kim } 451b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 45266a82d1fSYunlei He if (i >= 0) { 45366a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 454e05df3b1SJaegeuk Kim goto cache; 45566a82d1fSYunlei He } 456e05df3b1SJaegeuk Kim 457e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 45866a82d1fSYunlei He index = current_nat_addr(sbi, nid); 45966a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 46066a82d1fSYunlei He 46166a82d1fSYunlei He page = get_meta_page(sbi, index); 462e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 463e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 464e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 465e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 466e05df3b1SJaegeuk Kim cache: 467e05df3b1SJaegeuk Kim /* cache nat entry */ 4681515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 469e05df3b1SJaegeuk Kim } 470e05df3b1SJaegeuk Kim 47179344efbSJaegeuk Kim /* 47279344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 47379344efbSJaegeuk Kim */ 47479344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 47579344efbSJaegeuk Kim { 47679344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 47779344efbSJaegeuk Kim struct blk_plug plug; 47879344efbSJaegeuk Kim int i, end; 47979344efbSJaegeuk Kim nid_t nid; 48079344efbSJaegeuk Kim 48179344efbSJaegeuk Kim blk_start_plug(&plug); 48279344efbSJaegeuk Kim 48379344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 48479344efbSJaegeuk Kim end = start + n; 48579344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 48679344efbSJaegeuk Kim for (i = start; i < end; i++) { 48779344efbSJaegeuk Kim nid = get_nid(parent, i, false); 48879344efbSJaegeuk Kim ra_node_page(sbi, nid); 48979344efbSJaegeuk Kim } 49079344efbSJaegeuk Kim 49179344efbSJaegeuk Kim blk_finish_plug(&plug); 49279344efbSJaegeuk Kim } 49379344efbSJaegeuk Kim 4943cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4953cf45747SChao Yu { 4963cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4973cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4983cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4993cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 5003cf45747SChao Yu int cur_level = dn->cur_level; 5013cf45747SChao Yu int max_level = dn->max_level; 5023cf45747SChao Yu pgoff_t base = 0; 5033cf45747SChao Yu 5043cf45747SChao Yu if (!dn->max_level) 5053cf45747SChao Yu return pgofs + 1; 5063cf45747SChao Yu 5073cf45747SChao Yu while (max_level-- > cur_level) 5083cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 5093cf45747SChao Yu 5103cf45747SChao Yu switch (dn->max_level) { 5113cf45747SChao Yu case 3: 5123cf45747SChao Yu base += 2 * indirect_blks; 5133cf45747SChao Yu case 2: 5143cf45747SChao Yu base += 2 * direct_blks; 5153cf45747SChao Yu case 1: 5163cf45747SChao Yu base += direct_index; 5173cf45747SChao Yu break; 5183cf45747SChao Yu default: 5193cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 5203cf45747SChao Yu } 5213cf45747SChao Yu 5223cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 5233cf45747SChao Yu } 5243cf45747SChao Yu 5250a8165d7SJaegeuk Kim /* 526e05df3b1SJaegeuk Kim * The maximum depth is four. 527e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 528e05df3b1SJaegeuk Kim */ 52981ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 530de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 531e05df3b1SJaegeuk Kim { 53281ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 533e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 534e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 535e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 536e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 537e05df3b1SJaegeuk Kim int n = 0; 538e05df3b1SJaegeuk Kim int level = 0; 539e05df3b1SJaegeuk Kim 540e05df3b1SJaegeuk Kim noffset[0] = 0; 541e05df3b1SJaegeuk Kim 542e05df3b1SJaegeuk Kim if (block < direct_index) { 54325c0a6e5SNamjae Jeon offset[n] = block; 544e05df3b1SJaegeuk Kim goto got; 545e05df3b1SJaegeuk Kim } 546e05df3b1SJaegeuk Kim block -= direct_index; 547e05df3b1SJaegeuk Kim if (block < direct_blks) { 548e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 549e05df3b1SJaegeuk Kim noffset[n] = 1; 55025c0a6e5SNamjae Jeon offset[n] = block; 551e05df3b1SJaegeuk Kim level = 1; 552e05df3b1SJaegeuk Kim goto got; 553e05df3b1SJaegeuk Kim } 554e05df3b1SJaegeuk Kim block -= direct_blks; 555e05df3b1SJaegeuk Kim if (block < direct_blks) { 556e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 557e05df3b1SJaegeuk Kim noffset[n] = 2; 55825c0a6e5SNamjae Jeon offset[n] = block; 559e05df3b1SJaegeuk Kim level = 1; 560e05df3b1SJaegeuk Kim goto got; 561e05df3b1SJaegeuk Kim } 562e05df3b1SJaegeuk Kim block -= direct_blks; 563e05df3b1SJaegeuk Kim if (block < indirect_blks) { 564e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 565e05df3b1SJaegeuk Kim noffset[n] = 3; 566e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 567e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 56825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 569e05df3b1SJaegeuk Kim level = 2; 570e05df3b1SJaegeuk Kim goto got; 571e05df3b1SJaegeuk Kim } 572e05df3b1SJaegeuk Kim block -= indirect_blks; 573e05df3b1SJaegeuk Kim if (block < indirect_blks) { 574e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 575e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 576e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 577e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 57825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 579e05df3b1SJaegeuk Kim level = 2; 580e05df3b1SJaegeuk Kim goto got; 581e05df3b1SJaegeuk Kim } 582e05df3b1SJaegeuk Kim block -= indirect_blks; 583e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 584e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 585e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 586e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 587e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 588e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 589e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 590e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 591e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 592e05df3b1SJaegeuk Kim offset[n - 1]; 59325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 594e05df3b1SJaegeuk Kim level = 3; 595e05df3b1SJaegeuk Kim goto got; 596e05df3b1SJaegeuk Kim } else { 597adb6dc19SJaegeuk Kim return -E2BIG; 598e05df3b1SJaegeuk Kim } 599e05df3b1SJaegeuk Kim got: 600e05df3b1SJaegeuk Kim return level; 601e05df3b1SJaegeuk Kim } 602e05df3b1SJaegeuk Kim 603e05df3b1SJaegeuk Kim /* 604e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 6054f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 6064f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 60739936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 608e05df3b1SJaegeuk Kim */ 609266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 610e05df3b1SJaegeuk Kim { 6114081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 612e05df3b1SJaegeuk Kim struct page *npage[4]; 613f1a3b98eSJaegeuk Kim struct page *parent = NULL; 614e05df3b1SJaegeuk Kim int offset[4]; 615e05df3b1SJaegeuk Kim unsigned int noffset[4]; 616e05df3b1SJaegeuk Kim nid_t nids[4]; 6173cf45747SChao Yu int level, i = 0; 618e05df3b1SJaegeuk Kim int err = 0; 619e05df3b1SJaegeuk Kim 62081ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 621adb6dc19SJaegeuk Kim if (level < 0) 622adb6dc19SJaegeuk Kim return level; 623e05df3b1SJaegeuk Kim 624e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 6251646cfacSJaegeuk Kim npage[0] = dn->inode_page; 6261646cfacSJaegeuk Kim 6271646cfacSJaegeuk Kim if (!npage[0]) { 628e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 629e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 630e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 6311646cfacSJaegeuk Kim } 632f1a3b98eSJaegeuk Kim 633f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 634f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 63576629165SJaegeuk Kim err = -ENOENT; 636f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 637f1a3b98eSJaegeuk Kim goto release_out; 638f1a3b98eSJaegeuk Kim } 639f1a3b98eSJaegeuk Kim 640e05df3b1SJaegeuk Kim parent = npage[0]; 64152c2db3fSChangman Lee if (level != 0) 642e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 643e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 644e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 645e05df3b1SJaegeuk Kim 646e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 647e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 648e05df3b1SJaegeuk Kim bool done = false; 649e05df3b1SJaegeuk Kim 650266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 651e05df3b1SJaegeuk Kim /* alloc new node */ 652e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 653e05df3b1SJaegeuk Kim err = -ENOSPC; 654e05df3b1SJaegeuk Kim goto release_pages; 655e05df3b1SJaegeuk Kim } 656e05df3b1SJaegeuk Kim 657e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6585f4ce6abSYunlei He npage[i] = new_node_page(dn, noffset[i]); 659e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 660e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 661e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 662e05df3b1SJaegeuk Kim goto release_pages; 663e05df3b1SJaegeuk Kim } 664e05df3b1SJaegeuk Kim 665e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 666e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 667e05df3b1SJaegeuk Kim done = true; 668266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 669e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 670e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 671e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 672e05df3b1SJaegeuk Kim goto release_pages; 673e05df3b1SJaegeuk Kim } 674e05df3b1SJaegeuk Kim done = true; 675e05df3b1SJaegeuk Kim } 676e05df3b1SJaegeuk Kim if (i == 1) { 677e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 678e05df3b1SJaegeuk Kim unlock_page(parent); 679e05df3b1SJaegeuk Kim } else { 680e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 681e05df3b1SJaegeuk Kim } 682e05df3b1SJaegeuk Kim 683e05df3b1SJaegeuk Kim if (!done) { 684e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 685e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 686e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 687e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 688e05df3b1SJaegeuk Kim goto release_out; 689e05df3b1SJaegeuk Kim } 690e05df3b1SJaegeuk Kim } 691e05df3b1SJaegeuk Kim if (i < level) { 692e05df3b1SJaegeuk Kim parent = npage[i]; 693e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 694e05df3b1SJaegeuk Kim } 695e05df3b1SJaegeuk Kim } 696e05df3b1SJaegeuk Kim dn->nid = nids[level]; 697e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 698e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 6997a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 7007a2af766SChao Yu dn->node_page, dn->ofs_in_node); 701e05df3b1SJaegeuk Kim return 0; 702e05df3b1SJaegeuk Kim 703e05df3b1SJaegeuk Kim release_pages: 704e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 705e05df3b1SJaegeuk Kim if (i > 1) 706e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 707e05df3b1SJaegeuk Kim release_out: 708e05df3b1SJaegeuk Kim dn->inode_page = NULL; 709e05df3b1SJaegeuk Kim dn->node_page = NULL; 7103cf45747SChao Yu if (err == -ENOENT) { 7113cf45747SChao Yu dn->cur_level = i; 7123cf45747SChao Yu dn->max_level = level; 7130a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 7143cf45747SChao Yu } 715e05df3b1SJaegeuk Kim return err; 716e05df3b1SJaegeuk Kim } 717e05df3b1SJaegeuk Kim 718e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 719e05df3b1SJaegeuk Kim { 7204081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 721e05df3b1SJaegeuk Kim struct node_info ni; 722e05df3b1SJaegeuk Kim 723e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 724e05df3b1SJaegeuk Kim 725e05df3b1SJaegeuk Kim /* Deallocate node address */ 72671e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 727000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 728479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 729e05df3b1SJaegeuk Kim 730e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 731e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 732e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 7330f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 734e05df3b1SJaegeuk Kim } 735000519f2SChao Yu 736e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 737caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 738e05df3b1SJaegeuk Kim 739e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 740bf39c00aSJaegeuk Kim 741bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 742bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 743bf39c00aSJaegeuk Kim 744e05df3b1SJaegeuk Kim dn->node_page = NULL; 74551dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 746e05df3b1SJaegeuk Kim } 747e05df3b1SJaegeuk Kim 748e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 749e05df3b1SJaegeuk Kim { 750e05df3b1SJaegeuk Kim struct page *page; 751e05df3b1SJaegeuk Kim 752e05df3b1SJaegeuk Kim if (dn->nid == 0) 753e05df3b1SJaegeuk Kim return 1; 754e05df3b1SJaegeuk Kim 755e05df3b1SJaegeuk Kim /* get direct node */ 7564081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 757e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 758e05df3b1SJaegeuk Kim return 1; 759e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 760e05df3b1SJaegeuk Kim return PTR_ERR(page); 761e05df3b1SJaegeuk Kim 762e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 763e05df3b1SJaegeuk Kim dn->node_page = page; 764e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 765e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 766e05df3b1SJaegeuk Kim truncate_node(dn); 767e05df3b1SJaegeuk Kim return 1; 768e05df3b1SJaegeuk Kim } 769e05df3b1SJaegeuk Kim 770e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 771e05df3b1SJaegeuk Kim int ofs, int depth) 772e05df3b1SJaegeuk Kim { 773e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 774e05df3b1SJaegeuk Kim struct page *page; 775e05df3b1SJaegeuk Kim struct f2fs_node *rn; 776e05df3b1SJaegeuk Kim nid_t child_nid; 777e05df3b1SJaegeuk Kim unsigned int child_nofs; 778e05df3b1SJaegeuk Kim int freed = 0; 779e05df3b1SJaegeuk Kim int i, ret; 780e05df3b1SJaegeuk Kim 781e05df3b1SJaegeuk Kim if (dn->nid == 0) 782e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 783e05df3b1SJaegeuk Kim 78451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 78551dd6249SNamjae Jeon 7864081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 78751dd6249SNamjae Jeon if (IS_ERR(page)) { 78851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 789e05df3b1SJaegeuk Kim return PTR_ERR(page); 79051dd6249SNamjae Jeon } 791e05df3b1SJaegeuk Kim 79279344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 79379344efbSJaegeuk Kim 79445590710SGu Zheng rn = F2FS_NODE(page); 795e05df3b1SJaegeuk Kim if (depth < 3) { 796e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 797e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 798e05df3b1SJaegeuk Kim if (child_nid == 0) 799e05df3b1SJaegeuk Kim continue; 800e05df3b1SJaegeuk Kim rdn.nid = child_nid; 801e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 802e05df3b1SJaegeuk Kim if (ret < 0) 803e05df3b1SJaegeuk Kim goto out_err; 80412719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 80593bae099SJaegeuk Kim dn->node_changed = true; 806e05df3b1SJaegeuk Kim } 807e05df3b1SJaegeuk Kim } else { 808e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 809e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 810e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 811e05df3b1SJaegeuk Kim if (child_nid == 0) { 812e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 813e05df3b1SJaegeuk Kim continue; 814e05df3b1SJaegeuk Kim } 815e05df3b1SJaegeuk Kim rdn.nid = child_nid; 816e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 817e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 81812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 81993bae099SJaegeuk Kim dn->node_changed = true; 820e05df3b1SJaegeuk Kim child_nofs += ret; 821e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 822e05df3b1SJaegeuk Kim goto out_err; 823e05df3b1SJaegeuk Kim } 824e05df3b1SJaegeuk Kim } 825e05df3b1SJaegeuk Kim freed = child_nofs; 826e05df3b1SJaegeuk Kim } 827e05df3b1SJaegeuk Kim 828e05df3b1SJaegeuk Kim if (!ofs) { 829e05df3b1SJaegeuk Kim /* remove current indirect node */ 830e05df3b1SJaegeuk Kim dn->node_page = page; 831e05df3b1SJaegeuk Kim truncate_node(dn); 832e05df3b1SJaegeuk Kim freed++; 833e05df3b1SJaegeuk Kim } else { 834e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 835e05df3b1SJaegeuk Kim } 83651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 837e05df3b1SJaegeuk Kim return freed; 838e05df3b1SJaegeuk Kim 839e05df3b1SJaegeuk Kim out_err: 840e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 84151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 842e05df3b1SJaegeuk Kim return ret; 843e05df3b1SJaegeuk Kim } 844e05df3b1SJaegeuk Kim 845e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 846e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 847e05df3b1SJaegeuk Kim { 848e05df3b1SJaegeuk Kim struct page *pages[2]; 849e05df3b1SJaegeuk Kim nid_t nid[3]; 850e05df3b1SJaegeuk Kim nid_t child_nid; 851e05df3b1SJaegeuk Kim int err = 0; 852e05df3b1SJaegeuk Kim int i; 853e05df3b1SJaegeuk Kim int idx = depth - 2; 854e05df3b1SJaegeuk Kim 855e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 856e05df3b1SJaegeuk Kim if (!nid[0]) 857e05df3b1SJaegeuk Kim return 0; 858e05df3b1SJaegeuk Kim 859e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 860a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 861e1c42045Sarter97 /* reference count'll be increased */ 8624081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 863e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 864e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 865a225dca3Sshifei10.ge idx = i - 1; 866e05df3b1SJaegeuk Kim goto fail; 867e05df3b1SJaegeuk Kim } 868e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 869e05df3b1SJaegeuk Kim } 870e05df3b1SJaegeuk Kim 87179344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 87279344efbSJaegeuk Kim 873e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 874a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 875e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 876e05df3b1SJaegeuk Kim if (!child_nid) 877e05df3b1SJaegeuk Kim continue; 878e05df3b1SJaegeuk Kim dn->nid = child_nid; 879e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 880e05df3b1SJaegeuk Kim if (err < 0) 881e05df3b1SJaegeuk Kim goto fail; 88212719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 88393bae099SJaegeuk Kim dn->node_changed = true; 884e05df3b1SJaegeuk Kim } 885e05df3b1SJaegeuk Kim 886a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 887e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 888e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 889e05df3b1SJaegeuk Kim truncate_node(dn); 890e05df3b1SJaegeuk Kim } else { 891e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 892e05df3b1SJaegeuk Kim } 893e05df3b1SJaegeuk Kim offset[idx]++; 894a225dca3Sshifei10.ge offset[idx + 1] = 0; 895a225dca3Sshifei10.ge idx--; 896e05df3b1SJaegeuk Kim fail: 897a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 898e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 89951dd6249SNamjae Jeon 90051dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 90151dd6249SNamjae Jeon 902e05df3b1SJaegeuk Kim return err; 903e05df3b1SJaegeuk Kim } 904e05df3b1SJaegeuk Kim 9050a8165d7SJaegeuk Kim /* 906e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 907e05df3b1SJaegeuk Kim */ 908e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 909e05df3b1SJaegeuk Kim { 9104081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 911e05df3b1SJaegeuk Kim int err = 0, cont = 1; 912e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 9137dd690c8SJaegeuk Kim unsigned int nofs = 0; 91458bfaf44SJaegeuk Kim struct f2fs_inode *ri; 915e05df3b1SJaegeuk Kim struct dnode_of_data dn; 916e05df3b1SJaegeuk Kim struct page *page; 917e05df3b1SJaegeuk Kim 91851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 91951dd6249SNamjae Jeon 92081ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 921adb6dc19SJaegeuk Kim if (level < 0) 922adb6dc19SJaegeuk Kim return level; 923ff373558SJaegeuk Kim 924e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 92551dd6249SNamjae Jeon if (IS_ERR(page)) { 92651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 927e05df3b1SJaegeuk Kim return PTR_ERR(page); 92851dd6249SNamjae Jeon } 929e05df3b1SJaegeuk Kim 930e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 931e05df3b1SJaegeuk Kim unlock_page(page); 932e05df3b1SJaegeuk Kim 93358bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 934e05df3b1SJaegeuk Kim switch (level) { 935e05df3b1SJaegeuk Kim case 0: 936e05df3b1SJaegeuk Kim case 1: 937e05df3b1SJaegeuk Kim nofs = noffset[1]; 938e05df3b1SJaegeuk Kim break; 939e05df3b1SJaegeuk Kim case 2: 940e05df3b1SJaegeuk Kim nofs = noffset[1]; 941e05df3b1SJaegeuk Kim if (!offset[level - 1]) 942e05df3b1SJaegeuk Kim goto skip_partial; 94358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 944e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 945e05df3b1SJaegeuk Kim goto fail; 946e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 947e05df3b1SJaegeuk Kim break; 948e05df3b1SJaegeuk Kim case 3: 949e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 950e05df3b1SJaegeuk Kim if (!offset[level - 1]) 951e05df3b1SJaegeuk Kim goto skip_partial; 95258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 953e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 954e05df3b1SJaegeuk Kim goto fail; 955e05df3b1SJaegeuk Kim break; 956e05df3b1SJaegeuk Kim default: 957e05df3b1SJaegeuk Kim BUG(); 958e05df3b1SJaegeuk Kim } 959e05df3b1SJaegeuk Kim 960e05df3b1SJaegeuk Kim skip_partial: 961e05df3b1SJaegeuk Kim while (cont) { 96258bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 963e05df3b1SJaegeuk Kim switch (offset[0]) { 964e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 965e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 966e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 967e05df3b1SJaegeuk Kim break; 968e05df3b1SJaegeuk Kim 969e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 970e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 971e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 972e05df3b1SJaegeuk Kim break; 973e05df3b1SJaegeuk Kim 974e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 975e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 976e05df3b1SJaegeuk Kim cont = 0; 977e05df3b1SJaegeuk Kim break; 978e05df3b1SJaegeuk Kim 979e05df3b1SJaegeuk Kim default: 980e05df3b1SJaegeuk Kim BUG(); 981e05df3b1SJaegeuk Kim } 982e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 983e05df3b1SJaegeuk Kim goto fail; 984e05df3b1SJaegeuk Kim if (offset[1] == 0 && 98558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 986e05df3b1SJaegeuk Kim lock_page(page); 987ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 988fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 98958bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 990e05df3b1SJaegeuk Kim set_page_dirty(page); 991e05df3b1SJaegeuk Kim unlock_page(page); 992e05df3b1SJaegeuk Kim } 993e05df3b1SJaegeuk Kim offset[1] = 0; 994e05df3b1SJaegeuk Kim offset[0]++; 995e05df3b1SJaegeuk Kim nofs += err; 996e05df3b1SJaegeuk Kim } 997e05df3b1SJaegeuk Kim fail: 998e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 99951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1000e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1001e05df3b1SJaegeuk Kim } 1002e05df3b1SJaegeuk Kim 10039c77f754SJaegeuk Kim /* caller must lock inode page */ 10049c77f754SJaegeuk Kim int truncate_xattr_node(struct inode *inode) 10054f16fb0fSJaegeuk Kim { 10064081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 10074f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 10084f16fb0fSJaegeuk Kim struct dnode_of_data dn; 10094f16fb0fSJaegeuk Kim struct page *npage; 10104f16fb0fSJaegeuk Kim 10114f16fb0fSJaegeuk Kim if (!nid) 10124f16fb0fSJaegeuk Kim return 0; 10134f16fb0fSJaegeuk Kim 10144f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 10154f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 10164f16fb0fSJaegeuk Kim return PTR_ERR(npage); 10174f16fb0fSJaegeuk Kim 1018205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 101965985d93SJaegeuk Kim 10209c77f754SJaegeuk Kim set_new_dnode(&dn, inode, NULL, npage, nid); 10214f16fb0fSJaegeuk Kim truncate_node(&dn); 10224f16fb0fSJaegeuk Kim return 0; 10234f16fb0fSJaegeuk Kim } 10244f16fb0fSJaegeuk Kim 102539936837SJaegeuk Kim /* 10264f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 10274f4124d0SChao Yu * f2fs_unlock_op(). 102839936837SJaegeuk Kim */ 102913ec7297SChao Yu int remove_inode_page(struct inode *inode) 1030e05df3b1SJaegeuk Kim { 1031e05df3b1SJaegeuk Kim struct dnode_of_data dn; 103213ec7297SChao Yu int err; 1033e05df3b1SJaegeuk Kim 1034c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 103513ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 103613ec7297SChao Yu if (err) 103713ec7297SChao Yu return err; 1038e05df3b1SJaegeuk Kim 10399c77f754SJaegeuk Kim err = truncate_xattr_node(inode); 104013ec7297SChao Yu if (err) { 1041c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 104213ec7297SChao Yu return err; 1043e05df3b1SJaegeuk Kim } 1044c2e69583SJaegeuk Kim 1045c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1046c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1047c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 1048c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 1049c2e69583SJaegeuk Kim 1050e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10519850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10520eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1053c2e69583SJaegeuk Kim 1054c2e69583SJaegeuk Kim /* will put inode & node pages */ 1055e05df3b1SJaegeuk Kim truncate_node(&dn); 105613ec7297SChao Yu return 0; 1057e05df3b1SJaegeuk Kim } 1058e05df3b1SJaegeuk Kim 1059a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1060e05df3b1SJaegeuk Kim { 1061e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1062e05df3b1SJaegeuk Kim 1063e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1064e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 106544a83ff6SJaegeuk Kim 106644a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10675f4ce6abSYunlei He return new_node_page(&dn, 0); 1068e05df3b1SJaegeuk Kim } 1069e05df3b1SJaegeuk Kim 10705f4ce6abSYunlei He struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1071e05df3b1SJaegeuk Kim { 10724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 107325cc5d3bSJaegeuk Kim struct node_info new_ni; 1074e05df3b1SJaegeuk Kim struct page *page; 1075e05df3b1SJaegeuk Kim int err; 1076e05df3b1SJaegeuk Kim 107791942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1078e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1079e05df3b1SJaegeuk Kim 1080300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1081e05df3b1SJaegeuk Kim if (!page) 1082e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1083e05df3b1SJaegeuk Kim 10840abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 10859c02740cSJaegeuk Kim goto fail; 10860abd675eSChao Yu 108725cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 108825cc5d3bSJaegeuk Kim get_node_info(sbi, dn->nid, &new_ni); 108925cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 109025cc5d3bSJaegeuk Kim #endif 109125cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1092e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 109325cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 109425cc5d3bSJaegeuk Kim new_ni.flag = 0; 109525cc5d3bSJaegeuk Kim new_ni.version = 0; 1096479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10979c02740cSJaegeuk Kim 1098fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10999c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1100c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1101237c0790SJaegeuk Kim if (!PageUptodate(page)) 11029c02740cSJaegeuk Kim SetPageUptodate(page); 110312719ae1SJaegeuk Kim if (set_page_dirty(page)) 110412719ae1SJaegeuk Kim dn->node_changed = true; 1105e05df3b1SJaegeuk Kim 11064bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1107205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1108479bd73aSJaegeuk Kim 1109e05df3b1SJaegeuk Kim if (ofs == 0) 1110e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1111e05df3b1SJaegeuk Kim return page; 1112e05df3b1SJaegeuk Kim 1113e05df3b1SJaegeuk Kim fail: 111471e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1115e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1116e05df3b1SJaegeuk Kim return ERR_PTR(err); 1117e05df3b1SJaegeuk Kim } 1118e05df3b1SJaegeuk Kim 111956ae674cSJaegeuk Kim /* 112056ae674cSJaegeuk Kim * Caller should do after getting the following values. 112156ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 112286531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 112356ae674cSJaegeuk Kim */ 112404d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1125e05df3b1SJaegeuk Kim { 11264081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1127e05df3b1SJaegeuk Kim struct node_info ni; 1128cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 112905ca3632SJaegeuk Kim .sbi = sbi, 1130cf04e8ebSJaegeuk Kim .type = NODE, 113104d328deSMike Christie .op = REQ_OP_READ, 113204d328deSMike Christie .op_flags = op_flags, 113305ca3632SJaegeuk Kim .page = page, 11344375a336SJaegeuk Kim .encrypted_page = NULL, 1135cf04e8ebSJaegeuk Kim }; 1136e05df3b1SJaegeuk Kim 11373bdad3c7SJaegeuk Kim if (PageUptodate(page)) 11383bdad3c7SJaegeuk Kim return LOCKED_PAGE; 11393bdad3c7SJaegeuk Kim 1140e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1141e05df3b1SJaegeuk Kim 11426bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 11432bca1e23SJaegeuk Kim ClearPageUptodate(page); 1144e05df3b1SJaegeuk Kim return -ENOENT; 1145393ff91fSJaegeuk Kim } 1146393ff91fSJaegeuk Kim 11477a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 114805ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1149e05df3b1SJaegeuk Kim } 1150e05df3b1SJaegeuk Kim 11510a8165d7SJaegeuk Kim /* 1152e05df3b1SJaegeuk Kim * Readahead a node page 1153e05df3b1SJaegeuk Kim */ 1154e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1155e05df3b1SJaegeuk Kim { 1156e05df3b1SJaegeuk Kim struct page *apage; 115756ae674cSJaegeuk Kim int err; 1158e05df3b1SJaegeuk Kim 1159e8458725SChao Yu if (!nid) 1160e8458725SChao Yu return; 1161e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1162e8458725SChao Yu 1163999270deSFan Li rcu_read_lock(); 1164999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1165999270deSFan Li rcu_read_unlock(); 1166999270deSFan Li if (apage) 1167393ff91fSJaegeuk Kim return; 1168e05df3b1SJaegeuk Kim 1169300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1170e05df3b1SJaegeuk Kim if (!apage) 1171e05df3b1SJaegeuk Kim return; 1172e05df3b1SJaegeuk Kim 117370246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 117486531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1175e05df3b1SJaegeuk Kim } 1176e05df3b1SJaegeuk Kim 117717a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11780e022ea8SChao Yu struct page *parent, int start) 1179e05df3b1SJaegeuk Kim { 118056ae674cSJaegeuk Kim struct page *page; 118156ae674cSJaegeuk Kim int err; 11824aa69d56SJaegeuk Kim 11834aa69d56SJaegeuk Kim if (!nid) 11844aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11854aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1186afcb7ca0SJaegeuk Kim repeat: 1187300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1188e05df3b1SJaegeuk Kim if (!page) 1189e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1190e05df3b1SJaegeuk Kim 119170fd7614SChristoph Hellwig err = read_node_page(page, 0); 119286531d6bSJaegeuk Kim if (err < 0) { 119386531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1194e05df3b1SJaegeuk Kim return ERR_PTR(err); 1195e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 11961f258ec1SChao Yu err = 0; 1197e1c51b9fSChao Yu goto page_hit; 119886531d6bSJaegeuk Kim } 1199aaf96075SJaegeuk Kim 12000e022ea8SChao Yu if (parent) 120179344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 12020e022ea8SChao Yu 1203e1c51b9fSChao Yu lock_page(page); 1204e1c51b9fSChao Yu 12054ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1206afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1207afcb7ca0SJaegeuk Kim goto repeat; 1208afcb7ca0SJaegeuk Kim } 12091563ac75SChao Yu 12101f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 12111f258ec1SChao Yu err = -EIO; 12121563ac75SChao Yu goto out_err; 12131f258ec1SChao Yu } 1214704956ecSChao Yu 1215704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1216704956ecSChao Yu err = -EBADMSG; 1217704956ecSChao Yu goto out_err; 1218704956ecSChao Yu } 1219e1c51b9fSChao Yu page_hit: 12200c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 12211f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 12221f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 12231f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 12241f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 12251f258ec1SChao Yu next_blkaddr_of_node(page)); 12261f258ec1SChao Yu err = -EINVAL; 12270c9df7fbSYunlong Song out_err: 1228ee605234SJaegeuk Kim ClearPageUptodate(page); 12290c9df7fbSYunlong Song f2fs_put_page(page, 1); 12301f258ec1SChao Yu return ERR_PTR(err); 12310c9df7fbSYunlong Song } 1232e05df3b1SJaegeuk Kim return page; 1233e05df3b1SJaegeuk Kim } 1234e05df3b1SJaegeuk Kim 12350e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 12360e022ea8SChao Yu { 12370e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 12380e022ea8SChao Yu } 12390e022ea8SChao Yu 1240e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1241e05df3b1SJaegeuk Kim { 12424081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 12430e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1244e05df3b1SJaegeuk Kim 12450e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1246e05df3b1SJaegeuk Kim } 1247e05df3b1SJaegeuk Kim 12482049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 12492049d4fcSJaegeuk Kim { 12502049d4fcSJaegeuk Kim struct inode *inode; 12512049d4fcSJaegeuk Kim struct page *page; 12520f3311a8SChao Yu int ret; 12532049d4fcSJaegeuk Kim 12542049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 12552049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 12562049d4fcSJaegeuk Kim if (!inode) 12572049d4fcSJaegeuk Kim return; 12582049d4fcSJaegeuk Kim 125901eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 126001eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 12612049d4fcSJaegeuk Kim if (!page) 12622049d4fcSJaegeuk Kim goto iput_out; 12632049d4fcSJaegeuk Kim 12642049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12652049d4fcSJaegeuk Kim goto page_out; 12662049d4fcSJaegeuk Kim 12672049d4fcSJaegeuk Kim if (!PageDirty(page)) 12682049d4fcSJaegeuk Kim goto page_out; 12692049d4fcSJaegeuk Kim 12702049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12712049d4fcSJaegeuk Kim goto page_out; 12722049d4fcSJaegeuk Kim 12730f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12742049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 1275933439c8SChao Yu remove_dirty_inode(inode); 12760f3311a8SChao Yu if (ret) 12772049d4fcSJaegeuk Kim set_page_dirty(page); 12782049d4fcSJaegeuk Kim page_out: 12794a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12802049d4fcSJaegeuk Kim iput_out: 12812049d4fcSJaegeuk Kim iput(inode); 12822049d4fcSJaegeuk Kim } 12832049d4fcSJaegeuk Kim 1284608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1285e05df3b1SJaegeuk Kim { 1286028a63a6SJan Kara pgoff_t index; 1287e05df3b1SJaegeuk Kim struct pagevec pvec; 1288608514deSJaegeuk Kim struct page *last_page = NULL; 1289028a63a6SJan Kara int nr_pages; 129052681375SJaegeuk Kim 129186679820SMel Gorman pagevec_init(&pvec); 129252681375SJaegeuk Kim index = 0; 129352681375SJaegeuk Kim 1294028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 129567fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1296028a63a6SJan Kara int i; 129752681375SJaegeuk Kim 129852681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 129952681375SJaegeuk Kim struct page *page = pvec.pages[i]; 130052681375SJaegeuk Kim 130152681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1302608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 130352681375SJaegeuk Kim pagevec_release(&pvec); 1304608514deSJaegeuk Kim return ERR_PTR(-EIO); 130552681375SJaegeuk Kim } 130652681375SJaegeuk Kim 130752681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 130852681375SJaegeuk Kim continue; 130952681375SJaegeuk Kim if (ino_of_node(page) != ino) 131052681375SJaegeuk Kim continue; 131152681375SJaegeuk Kim 131252681375SJaegeuk Kim lock_page(page); 131352681375SJaegeuk Kim 131452681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 131552681375SJaegeuk Kim continue_unlock: 131652681375SJaegeuk Kim unlock_page(page); 131752681375SJaegeuk Kim continue; 131852681375SJaegeuk Kim } 131952681375SJaegeuk Kim if (ino_of_node(page) != ino) 132052681375SJaegeuk Kim goto continue_unlock; 132152681375SJaegeuk Kim 132252681375SJaegeuk Kim if (!PageDirty(page)) { 132352681375SJaegeuk Kim /* someone wrote it for us */ 132452681375SJaegeuk Kim goto continue_unlock; 132552681375SJaegeuk Kim } 132652681375SJaegeuk Kim 1327608514deSJaegeuk Kim if (last_page) 1328608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1329608514deSJaegeuk Kim 1330608514deSJaegeuk Kim get_page(page); 1331608514deSJaegeuk Kim last_page = page; 1332608514deSJaegeuk Kim unlock_page(page); 1333608514deSJaegeuk Kim } 1334608514deSJaegeuk Kim pagevec_release(&pvec); 1335608514deSJaegeuk Kim cond_resched(); 1336608514deSJaegeuk Kim } 1337608514deSJaegeuk Kim return last_page; 1338608514deSJaegeuk Kim } 1339608514deSJaegeuk Kim 1340d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1341b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 1342b0af6d49SChao Yu enum iostat_type io_type) 1343faa24895SJaegeuk Kim { 1344faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1345faa24895SJaegeuk Kim nid_t nid; 1346faa24895SJaegeuk Kim struct node_info ni; 1347faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1348faa24895SJaegeuk Kim .sbi = sbi, 134939d787beSChao Yu .ino = ino_of_node(page), 1350faa24895SJaegeuk Kim .type = NODE, 1351faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1352faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1353faa24895SJaegeuk Kim .page = page, 1354faa24895SJaegeuk Kim .encrypted_page = NULL, 1355d68f735bSJaegeuk Kim .submitted = false, 1356b0af6d49SChao Yu .io_type = io_type, 1357578c6478SYufen Yu .io_wbc = wbc, 1358faa24895SJaegeuk Kim }; 1359faa24895SJaegeuk Kim 1360faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1361faa24895SJaegeuk Kim 1362db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 1363db198ae0SChao Yu dec_page_count(sbi, F2FS_DIRTY_NODES); 1364db198ae0SChao Yu unlock_page(page); 1365db198ae0SChao Yu return 0; 1366db198ae0SChao Yu } 1367db198ae0SChao Yu 1368faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1369faa24895SJaegeuk Kim goto redirty_out; 1370faa24895SJaegeuk Kim 1371faa24895SJaegeuk Kim /* get old block addr of this node page */ 1372faa24895SJaegeuk Kim nid = nid_of_node(page); 1373faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1374faa24895SJaegeuk Kim 1375faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1376faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1377faa24895SJaegeuk Kim goto redirty_out; 1378faa24895SJaegeuk Kim } else { 1379faa24895SJaegeuk Kim down_read(&sbi->node_write); 1380faa24895SJaegeuk Kim } 1381faa24895SJaegeuk Kim 1382faa24895SJaegeuk Kim get_node_info(sbi, nid, &ni); 1383faa24895SJaegeuk Kim 1384faa24895SJaegeuk Kim /* This page is already truncated */ 1385faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1386faa24895SJaegeuk Kim ClearPageUptodate(page); 1387faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1388faa24895SJaegeuk Kim up_read(&sbi->node_write); 1389faa24895SJaegeuk Kim unlock_page(page); 1390faa24895SJaegeuk Kim return 0; 1391faa24895SJaegeuk Kim } 1392faa24895SJaegeuk Kim 1393e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1394e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1395e7c75ab0SJaegeuk Kim 1396faa24895SJaegeuk Kim set_page_writeback(page); 1397faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 1398faa24895SJaegeuk Kim write_node_page(nid, &fio); 1399faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1400faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1401faa24895SJaegeuk Kim up_read(&sbi->node_write); 1402faa24895SJaegeuk Kim 1403d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1404b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1405b9109b0eSJaegeuk Kim page->index, NODE); 1406d68f735bSJaegeuk Kim submitted = NULL; 1407d68f735bSJaegeuk Kim } 1408faa24895SJaegeuk Kim 1409faa24895SJaegeuk Kim unlock_page(page); 1410faa24895SJaegeuk Kim 1411d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1412b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1413d68f735bSJaegeuk Kim submitted = NULL; 1414d68f735bSJaegeuk Kim } 1415d68f735bSJaegeuk Kim if (submitted) 1416d68f735bSJaegeuk Kim *submitted = fio.submitted; 1417faa24895SJaegeuk Kim 1418401db79fSYunlong Song if (do_balance) 1419401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1420faa24895SJaegeuk Kim return 0; 1421faa24895SJaegeuk Kim 1422faa24895SJaegeuk Kim redirty_out: 1423faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1424faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1425faa24895SJaegeuk Kim } 1426faa24895SJaegeuk Kim 1427f15194fcSYunlei He void move_node_page(struct page *node_page, int gc_type) 1428f15194fcSYunlei He { 1429f15194fcSYunlei He if (gc_type == FG_GC) { 1430f15194fcSYunlei He struct writeback_control wbc = { 1431f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1432f15194fcSYunlei He .nr_to_write = 1, 1433f15194fcSYunlei He .for_reclaim = 0, 1434f15194fcSYunlei He }; 1435f15194fcSYunlei He 1436f15194fcSYunlei He set_page_dirty(node_page); 1437f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1438f15194fcSYunlei He 1439f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1440f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1441f15194fcSYunlei He goto out_page; 1442f15194fcSYunlei He 1443f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 1444f15194fcSYunlei He &wbc, false, FS_GC_NODE_IO)) 1445f15194fcSYunlei He unlock_page(node_page); 1446f15194fcSYunlei He goto release_page; 1447f15194fcSYunlei He } else { 1448f15194fcSYunlei He /* set page dirty and write it */ 1449f15194fcSYunlei He if (!PageWriteback(node_page)) 1450f15194fcSYunlei He set_page_dirty(node_page); 1451f15194fcSYunlei He } 1452f15194fcSYunlei He out_page: 1453f15194fcSYunlei He unlock_page(node_page); 1454f15194fcSYunlei He release_page: 1455f15194fcSYunlei He f2fs_put_page(node_page, 0); 1456f15194fcSYunlei He } 1457f15194fcSYunlei He 1458faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1459faa24895SJaegeuk Kim struct writeback_control *wbc) 1460faa24895SJaegeuk Kim { 1461b0af6d49SChao Yu return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); 1462faa24895SJaegeuk Kim } 1463faa24895SJaegeuk Kim 146426de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1465608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1466608514deSJaegeuk Kim { 1467028a63a6SJan Kara pgoff_t index; 1468942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1469608514deSJaegeuk Kim struct pagevec pvec; 1470608514deSJaegeuk Kim int ret = 0; 1471608514deSJaegeuk Kim struct page *last_page = NULL; 1472608514deSJaegeuk Kim bool marked = false; 147326de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1474028a63a6SJan Kara int nr_pages; 1475608514deSJaegeuk Kim 1476608514deSJaegeuk Kim if (atomic) { 1477608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1478608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1479608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1480608514deSJaegeuk Kim } 1481608514deSJaegeuk Kim retry: 148286679820SMel Gorman pagevec_init(&pvec); 1483608514deSJaegeuk Kim index = 0; 1484608514deSJaegeuk Kim 1485028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 148667fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1487028a63a6SJan Kara int i; 1488608514deSJaegeuk Kim 1489608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1490608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1491d68f735bSJaegeuk Kim bool submitted = false; 1492608514deSJaegeuk Kim 1493608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1494608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1495608514deSJaegeuk Kim pagevec_release(&pvec); 14969de69279SChao Yu ret = -EIO; 14979de69279SChao Yu goto out; 1498608514deSJaegeuk Kim } 1499608514deSJaegeuk Kim 1500608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1501608514deSJaegeuk Kim continue; 1502608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1503608514deSJaegeuk Kim continue; 1504608514deSJaegeuk Kim 1505608514deSJaegeuk Kim lock_page(page); 1506608514deSJaegeuk Kim 1507608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1508608514deSJaegeuk Kim continue_unlock: 1509608514deSJaegeuk Kim unlock_page(page); 1510608514deSJaegeuk Kim continue; 1511608514deSJaegeuk Kim } 1512608514deSJaegeuk Kim if (ino_of_node(page) != ino) 151352681375SJaegeuk Kim goto continue_unlock; 151452681375SJaegeuk Kim 1515608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1516608514deSJaegeuk Kim /* someone wrote it for us */ 1517608514deSJaegeuk Kim goto continue_unlock; 1518608514deSJaegeuk Kim } 1519608514deSJaegeuk Kim 1520608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1521608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1522608514deSJaegeuk Kim 1523d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1524d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1525d29fd172SJaegeuk Kim 1526608514deSJaegeuk Kim if (!atomic || page == last_page) { 152752681375SJaegeuk Kim set_fsync_mark(page, 1); 152826de9b11SJaegeuk Kim if (IS_INODE(page)) { 152926de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 153026de9b11SJaegeuk Kim FI_DIRTY_INODE)) 153126de9b11SJaegeuk Kim update_inode(inode, page); 153252681375SJaegeuk Kim set_dentry_mark(page, 153352681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 153426de9b11SJaegeuk Kim } 1535608514deSJaegeuk Kim /* may be written by other thread */ 1536608514deSJaegeuk Kim if (!PageDirty(page)) 1537608514deSJaegeuk Kim set_page_dirty(page); 1538608514deSJaegeuk Kim } 1539608514deSJaegeuk Kim 1540608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1541608514deSJaegeuk Kim goto continue_unlock; 154252681375SJaegeuk Kim 1543e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1544d68f735bSJaegeuk Kim page == last_page, 1545b0af6d49SChao Yu &submitted, wbc, true, 1546b0af6d49SChao Yu FS_NODE_IO); 1547c267ec15SJaegeuk Kim if (ret) { 154852681375SJaegeuk Kim unlock_page(page); 1549608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1550608514deSJaegeuk Kim break; 1551d68f735bSJaegeuk Kim } else if (submitted) { 1552942fd319SJaegeuk Kim last_idx = page->index; 1553608514deSJaegeuk Kim } 15543f5f4959SChao Yu 1555608514deSJaegeuk Kim if (page == last_page) { 1556608514deSJaegeuk Kim f2fs_put_page(page, 0); 1557608514deSJaegeuk Kim marked = true; 155852681375SJaegeuk Kim break; 155952681375SJaegeuk Kim } 1560c267ec15SJaegeuk Kim } 156152681375SJaegeuk Kim pagevec_release(&pvec); 156252681375SJaegeuk Kim cond_resched(); 156352681375SJaegeuk Kim 1564608514deSJaegeuk Kim if (ret || marked) 156552681375SJaegeuk Kim break; 156652681375SJaegeuk Kim } 1567608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1568608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1569608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1570608514deSJaegeuk Kim ino, last_page->index); 1571608514deSJaegeuk Kim lock_page(last_page); 1572d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1573608514deSJaegeuk Kim set_page_dirty(last_page); 1574608514deSJaegeuk Kim unlock_page(last_page); 1575608514deSJaegeuk Kim goto retry; 1576608514deSJaegeuk Kim } 15779de69279SChao Yu out: 1578942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1579b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1580c267ec15SJaegeuk Kim return ret ? -EIO: 0; 158152681375SJaegeuk Kim } 158252681375SJaegeuk Kim 1583401db79fSYunlong Song int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, 1584b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 158552681375SJaegeuk Kim { 1586028a63a6SJan Kara pgoff_t index; 158752681375SJaegeuk Kim struct pagevec pvec; 158852681375SJaegeuk Kim int step = 0; 158912bb0a8fSJaegeuk Kim int nwritten = 0; 15903f5f4959SChao Yu int ret = 0; 1591028a63a6SJan Kara int nr_pages; 1592e05df3b1SJaegeuk Kim 159386679820SMel Gorman pagevec_init(&pvec); 1594e05df3b1SJaegeuk Kim 1595e05df3b1SJaegeuk Kim next_step: 1596e05df3b1SJaegeuk Kim index = 0; 1597e05df3b1SJaegeuk Kim 1598028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 159967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1600028a63a6SJan Kara int i; 1601e05df3b1SJaegeuk Kim 1602e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1603e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1604d68f735bSJaegeuk Kim bool submitted = false; 1605e05df3b1SJaegeuk Kim 1606e05df3b1SJaegeuk Kim /* 1607e05df3b1SJaegeuk Kim * flushing sequence with step: 1608e05df3b1SJaegeuk Kim * 0. indirect nodes 1609e05df3b1SJaegeuk Kim * 1. dentry dnodes 1610e05df3b1SJaegeuk Kim * 2. file dnodes 1611e05df3b1SJaegeuk Kim */ 1612e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1613e05df3b1SJaegeuk Kim continue; 1614e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1615e05df3b1SJaegeuk Kim is_cold_node(page))) 1616e05df3b1SJaegeuk Kim continue; 1617e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1618e05df3b1SJaegeuk Kim !is_cold_node(page))) 1619e05df3b1SJaegeuk Kim continue; 16209a4cbc9eSChao Yu lock_node: 162152681375SJaegeuk Kim if (!trylock_page(page)) 1622e05df3b1SJaegeuk Kim continue; 1623e05df3b1SJaegeuk Kim 16244ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1625e05df3b1SJaegeuk Kim continue_unlock: 1626e05df3b1SJaegeuk Kim unlock_page(page); 1627e05df3b1SJaegeuk Kim continue; 1628e05df3b1SJaegeuk Kim } 1629e05df3b1SJaegeuk Kim 1630e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1631e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1632e05df3b1SJaegeuk Kim goto continue_unlock; 1633e05df3b1SJaegeuk Kim } 1634e05df3b1SJaegeuk Kim 16352049d4fcSJaegeuk Kim /* flush inline_data */ 163652681375SJaegeuk Kim if (is_inline_node(page)) { 16372049d4fcSJaegeuk Kim clear_inline_node(page); 16382049d4fcSJaegeuk Kim unlock_page(page); 16392049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 16409a4cbc9eSChao Yu goto lock_node; 16412049d4fcSJaegeuk Kim } 16422049d4fcSJaegeuk Kim 1643fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1644fa3d2bdfSJaegeuk Kim 1645fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1646e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1647e05df3b1SJaegeuk Kim goto continue_unlock; 1648e05df3b1SJaegeuk Kim 1649e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1650e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 165152746519SJaegeuk Kim 1652401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 1653b0af6d49SChao Yu wbc, do_balance, io_type); 1654d68f735bSJaegeuk Kim if (ret) 165552746519SJaegeuk Kim unlock_page(page); 1656d68f735bSJaegeuk Kim else if (submitted) 16573f5f4959SChao Yu nwritten++; 1658e05df3b1SJaegeuk Kim 1659e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1660e05df3b1SJaegeuk Kim break; 1661e05df3b1SJaegeuk Kim } 1662e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1663e05df3b1SJaegeuk Kim cond_resched(); 1664e05df3b1SJaegeuk Kim 1665e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1666e05df3b1SJaegeuk Kim step = 2; 1667e05df3b1SJaegeuk Kim break; 1668e05df3b1SJaegeuk Kim } 1669e05df3b1SJaegeuk Kim } 1670e05df3b1SJaegeuk Kim 1671e05df3b1SJaegeuk Kim if (step < 2) { 1672e05df3b1SJaegeuk Kim step++; 1673e05df3b1SJaegeuk Kim goto next_step; 1674e05df3b1SJaegeuk Kim } 1675db198ae0SChao Yu 16763f5f4959SChao Yu if (nwritten) 1677b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1678db198ae0SChao Yu 1679db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1680db198ae0SChao Yu return -EIO; 16813f5f4959SChao Yu return ret; 1682e05df3b1SJaegeuk Kim } 1683e05df3b1SJaegeuk Kim 1684cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1685cfe58f9dSJaegeuk Kim { 1686028a63a6SJan Kara pgoff_t index = 0; 1687cfe58f9dSJaegeuk Kim struct pagevec pvec; 1688280db3c8SMiklos Szeredi int ret2, ret = 0; 1689028a63a6SJan Kara int nr_pages; 1690cfe58f9dSJaegeuk Kim 169186679820SMel Gorman pagevec_init(&pvec); 16924ef51a8fSJaegeuk Kim 1693028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 169467fd707fSJan Kara PAGECACHE_TAG_WRITEBACK))) { 1695028a63a6SJan Kara int i; 1696cfe58f9dSJaegeuk Kim 1697cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1698cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1699cfe58f9dSJaegeuk Kim 17004bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1701fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1702cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1703cfe58f9dSJaegeuk Kim ret = -EIO; 1704cfe58f9dSJaegeuk Kim } 17054bf08ff6SChao Yu } 1706cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1707cfe58f9dSJaegeuk Kim cond_resched(); 1708cfe58f9dSJaegeuk Kim } 1709cfe58f9dSJaegeuk Kim 1710280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1711cfe58f9dSJaegeuk Kim if (!ret) 1712cfe58f9dSJaegeuk Kim ret = ret2; 1713cfe58f9dSJaegeuk Kim return ret; 1714cfe58f9dSJaegeuk Kim } 1715cfe58f9dSJaegeuk Kim 1716e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1717e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1718e05df3b1SJaegeuk Kim { 17194081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 17209dfa1bafSJaegeuk Kim struct blk_plug plug; 172150c8cdb3SJaegeuk Kim long diff; 1722e05df3b1SJaegeuk Kim 17230771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 17240771fcc7SChao Yu goto skip_write; 17250771fcc7SChao Yu 17264660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 17274660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1728e05df3b1SJaegeuk Kim 1729a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 173087d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1731d3baf95dSJaegeuk Kim goto skip_write; 1732a7fdffbdSJaegeuk Kim 1733d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1734d31c7c3fSYunlei He 173550c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1736fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 17379dfa1bafSJaegeuk Kim blk_start_plug(&plug); 1738b0af6d49SChao Yu sync_node_pages(sbi, wbc, true, FS_NODE_IO); 17399dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 174050c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1741e05df3b1SJaegeuk Kim return 0; 1742d3baf95dSJaegeuk Kim 1743d3baf95dSJaegeuk Kim skip_write: 1744d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1745d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1746d3baf95dSJaegeuk Kim return 0; 1747e05df3b1SJaegeuk Kim } 1748e05df3b1SJaegeuk Kim 1749e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1750e05df3b1SJaegeuk Kim { 175126c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 175226c6b887SJaegeuk Kim 1753237c0790SJaegeuk Kim if (!PageUptodate(page)) 1754e05df3b1SJaegeuk Kim SetPageUptodate(page); 1755e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1756fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 17574081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1758e05df3b1SJaegeuk Kim SetPagePrivate(page); 17599e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1760e05df3b1SJaegeuk Kim return 1; 1761e05df3b1SJaegeuk Kim } 1762e05df3b1SJaegeuk Kim return 0; 1763e05df3b1SJaegeuk Kim } 1764e05df3b1SJaegeuk Kim 17650a8165d7SJaegeuk Kim /* 1766e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1767e05df3b1SJaegeuk Kim */ 1768e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1769e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1770e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1771e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1772487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1773487261f3SChao Yu .releasepage = f2fs_release_page, 17745b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 17755b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 17765b7a487cSWeichao Guo #endif 1777e05df3b1SJaegeuk Kim }; 1778e05df3b1SJaegeuk Kim 17798a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 17808a7ed66aSJaegeuk Kim nid_t n) 1781e05df3b1SJaegeuk Kim { 17828a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 17833aa770a9SNamjae Jeon } 1784e05df3b1SJaegeuk Kim 17859a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1786a0761f63SFan Li struct free_nid *i, enum nid_state state) 1787e05df3b1SJaegeuk Kim { 1788b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1789b8559dc2SChao Yu 1790eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1791eb0aa4b8SJaegeuk Kim if (err) 1792eb0aa4b8SJaegeuk Kim return err; 1793eb0aa4b8SJaegeuk Kim 17949a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 17959a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 17969a4ffdf5SChao Yu if (state == FREE_NID) 17979a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1798eb0aa4b8SJaegeuk Kim return 0; 1799b8559dc2SChao Yu } 1800b8559dc2SChao Yu 18019a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 1802a0761f63SFan Li struct free_nid *i, enum nid_state state) 1803b8559dc2SChao Yu { 1804b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1805b8559dc2SChao Yu 18069a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 18079a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 18089a4ffdf5SChao Yu if (state == FREE_NID) 1809e05df3b1SJaegeuk Kim list_del(&i->list); 18108a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1811e05df3b1SJaegeuk Kim } 1812e05df3b1SJaegeuk Kim 1813a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 1814a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 1815a0761f63SFan Li { 1816a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1817a0761f63SFan Li 1818a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 1819a0761f63SFan Li i->state = dst_state; 1820a0761f63SFan Li nm_i->nid_cnt[org_state]--; 1821a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 1822a0761f63SFan Li 1823a0761f63SFan Li switch (dst_state) { 1824a0761f63SFan Li case PREALLOC_NID: 1825a0761f63SFan Li list_del(&i->list); 1826a0761f63SFan Li break; 1827a0761f63SFan Li case FREE_NID: 1828a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 1829a0761f63SFan Li break; 1830a0761f63SFan Li default: 1831a0761f63SFan Li BUG_ON(1); 1832a0761f63SFan Li } 1833a0761f63SFan Li } 1834a0761f63SFan Li 18355921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 18365921aaa1SLiFan bool set, bool build) 18375921aaa1SLiFan { 18385921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 18395921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 18405921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 18415921aaa1SLiFan 18425921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 18435921aaa1SLiFan return; 18445921aaa1SLiFan 18455921aaa1SLiFan if (set) { 18465921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 18475921aaa1SLiFan return; 18485921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18495921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 18505921aaa1SLiFan } else { 18515921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 18525921aaa1SLiFan return; 18535921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18545921aaa1SLiFan if (!build) 18555921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 18565921aaa1SLiFan } 18575921aaa1SLiFan } 18585921aaa1SLiFan 18594ac91242SChao Yu /* return if the nid is recognized as free */ 18605921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 18615921aaa1SLiFan nid_t nid, bool build, bool update) 1862e05df3b1SJaegeuk Kim { 18636fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 186430a61ddfSChao Yu struct free_nid *i, *e; 186559bbd474SJaegeuk Kim struct nat_entry *ne; 186630a61ddfSChao Yu int err = -EINVAL; 186730a61ddfSChao Yu bool ret = false; 18689198acebSJaegeuk Kim 18699198acebSJaegeuk Kim /* 0 nid should not be used */ 1870cfb271d4SChao Yu if (unlikely(nid == 0)) 18714ac91242SChao Yu return false; 187259bbd474SJaegeuk Kim 18737bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1874e05df3b1SJaegeuk Kim i->nid = nid; 18759a4ffdf5SChao Yu i->state = FREE_NID; 1876e05df3b1SJaegeuk Kim 18775921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 1878769ec6e5SJaegeuk Kim 1879b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 188030a61ddfSChao Yu 188130a61ddfSChao Yu if (build) { 188230a61ddfSChao Yu /* 188330a61ddfSChao Yu * Thread A Thread B 188430a61ddfSChao Yu * - f2fs_create 188530a61ddfSChao Yu * - f2fs_new_inode 188630a61ddfSChao Yu * - alloc_nid 18879a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 188830a61ddfSChao Yu * - f2fs_balance_fs_bg 188930a61ddfSChao Yu * - build_free_nids 189030a61ddfSChao Yu * - __build_free_nids 189130a61ddfSChao Yu * - scan_nat_page 189230a61ddfSChao Yu * - add_free_nid 189330a61ddfSChao Yu * - __lookup_nat_cache 189430a61ddfSChao Yu * - f2fs_add_link 189530a61ddfSChao Yu * - init_inode_metadata 189630a61ddfSChao Yu * - new_inode_page 189730a61ddfSChao Yu * - new_node_page 189830a61ddfSChao Yu * - set_node_addr 189930a61ddfSChao Yu * - alloc_nid_done 19009a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 19019a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 190230a61ddfSChao Yu */ 190330a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 190430a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 190530a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 190630a61ddfSChao Yu goto err_out; 190730a61ddfSChao Yu 190830a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 190930a61ddfSChao Yu if (e) { 19109a4ffdf5SChao Yu if (e->state == FREE_NID) 191130a61ddfSChao Yu ret = true; 191230a61ddfSChao Yu goto err_out; 191330a61ddfSChao Yu } 191430a61ddfSChao Yu } 191530a61ddfSChao Yu ret = true; 1916a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 191730a61ddfSChao Yu err_out: 19185921aaa1SLiFan if (update) { 19195921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 19205921aaa1SLiFan if (!build) 19215921aaa1SLiFan nm_i->available_nids++; 19225921aaa1SLiFan } 1923b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1924769ec6e5SJaegeuk Kim radix_tree_preload_end(); 19255921aaa1SLiFan 192630a61ddfSChao Yu if (err) 1927e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 192830a61ddfSChao Yu return ret; 1929e05df3b1SJaegeuk Kim } 1930e05df3b1SJaegeuk Kim 1931b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 1932e05df3b1SJaegeuk Kim { 1933b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1934e05df3b1SJaegeuk Kim struct free_nid *i; 1935cf0ee0f0SChao Yu bool need_free = false; 1936cf0ee0f0SChao Yu 1937b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 19388a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 19399a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 1940a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 1941cf0ee0f0SChao Yu need_free = true; 1942e05df3b1SJaegeuk Kim } 1943b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1944cf0ee0f0SChao Yu 1945cf0ee0f0SChao Yu if (need_free) 1946cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1947e05df3b1SJaegeuk Kim } 1948e05df3b1SJaegeuk Kim 19496fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1950e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1951e05df3b1SJaegeuk Kim { 19526fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1953e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1954e05df3b1SJaegeuk Kim block_t blk_addr; 19554ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 1956e05df3b1SJaegeuk Kim int i; 1957e05df3b1SJaegeuk Kim 195823380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 19594ac91242SChao Yu 1960e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1961e05df3b1SJaegeuk Kim 1962e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 1963cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 196404431c44SJaegeuk Kim break; 196523d38844SHaicheng Li 1966e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 19679850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 19685921aaa1SLiFan if (blk_addr == NULL_ADDR) { 19695921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 19705921aaa1SLiFan } else { 1971346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 19725921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 1973346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 1974e05df3b1SJaegeuk Kim } 1975e05df3b1SJaegeuk Kim } 19765921aaa1SLiFan } 1977e05df3b1SJaegeuk Kim 19782fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 19794ac91242SChao Yu { 19804ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 19814ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 19822fbaa25fSChao Yu int i; 19834ac91242SChao Yu 19844ac91242SChao Yu down_read(&curseg->journal_rwsem); 19854ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 19864ac91242SChao Yu block_t addr; 19874ac91242SChao Yu nid_t nid; 19884ac91242SChao Yu 19894ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 19904ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 19914ac91242SChao Yu if (addr == NULL_ADDR) 19925921aaa1SLiFan add_free_nid(sbi, nid, true, false); 19934ac91242SChao Yu else 19944ac91242SChao Yu remove_free_nid(sbi, nid); 19954ac91242SChao Yu } 19964ac91242SChao Yu up_read(&curseg->journal_rwsem); 19972fbaa25fSChao Yu } 19982fbaa25fSChao Yu 1999e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 20004ac91242SChao Yu { 20014ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 20024ac91242SChao Yu unsigned int i, idx; 200397456574SFan Li nid_t nid; 20044ac91242SChao Yu 20054ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 20064ac91242SChao Yu 20074ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 20084ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 20094ac91242SChao Yu continue; 20104ac91242SChao Yu if (!nm_i->free_nid_count[i]) 20114ac91242SChao Yu continue; 20124ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 201397456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 201497456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 201597456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 201697456574SFan Li break; 20174ac91242SChao Yu 20184ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 20195921aaa1SLiFan add_free_nid(sbi, nid, true, false); 20204ac91242SChao Yu 20219a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 20224ac91242SChao Yu goto out; 20234ac91242SChao Yu } 20244ac91242SChao Yu } 20254ac91242SChao Yu out: 20262fbaa25fSChao Yu scan_curseg_cache(sbi); 20274ac91242SChao Yu 20284ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 20294ac91242SChao Yu } 20304ac91242SChao Yu 203122ad0b6aSJaegeuk Kim static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 2032e05df3b1SJaegeuk Kim { 2033e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 20348760952dSHaicheng Li int i = 0; 203555008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2036e05df3b1SJaegeuk Kim 2037e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2038e9cdd307SYunlei He nid = 0; 2039e9cdd307SYunlei He 204055008d84SJaegeuk Kim /* Enough entries */ 20419a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 204255008d84SJaegeuk Kim return; 2043e05df3b1SJaegeuk Kim 20443a2ad567SChao Yu if (!sync && !available_free_memory(sbi, FREE_NIDS)) 2045e05df3b1SJaegeuk Kim return; 2046e05df3b1SJaegeuk Kim 20474ac91242SChao Yu if (!mount) { 20484ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 20494ac91242SChao Yu scan_free_nid_bits(sbi); 20504ac91242SChao Yu 205174986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 205222ad0b6aSJaegeuk Kim return; 205322ad0b6aSJaegeuk Kim } 205422ad0b6aSJaegeuk Kim 205555008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 205626879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 205726879fb1SChao Yu META_NAT, true); 2058e05df3b1SJaegeuk Kim 2059b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2060a5131193SJaegeuk Kim 2061e05df3b1SJaegeuk Kim while (1) { 206266e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 206366e83361SYunlei He nm_i->nat_block_bitmap)) { 2064e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2065e05df3b1SJaegeuk Kim 20666fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 2067e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 206866e83361SYunlei He } 2069e05df3b1SJaegeuk Kim 2070e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2071cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2072e05df3b1SJaegeuk Kim nid = 0; 207355008d84SJaegeuk Kim 2074a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2075e05df3b1SJaegeuk Kim break; 2076e05df3b1SJaegeuk Kim } 2077e05df3b1SJaegeuk Kim 207855008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 207955008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2080e05df3b1SJaegeuk Kim 2081e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 20822fbaa25fSChao Yu scan_curseg_cache(sbi); 2083dfc08a12SChao Yu 2084b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 20852db2388fSChao Yu 20862db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2087ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2088e05df3b1SJaegeuk Kim } 2089e05df3b1SJaegeuk Kim 209022ad0b6aSJaegeuk Kim void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 20912411cf5bSChao Yu { 20922411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 209322ad0b6aSJaegeuk Kim __build_free_nids(sbi, sync, mount); 20942411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 20952411cf5bSChao Yu } 20962411cf5bSChao Yu 2097e05df3b1SJaegeuk Kim /* 2098e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2099e05df3b1SJaegeuk Kim * from second parameter of this function. 2100e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2101e05df3b1SJaegeuk Kim */ 2102e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2103e05df3b1SJaegeuk Kim { 2104e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2105e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2106e05df3b1SJaegeuk Kim retry: 2107cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 210855523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 210955523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2110cb78942bSJaegeuk Kim return false; 211155523519SChao Yu } 2112cb78942bSJaegeuk Kim #endif 2113b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2114e05df3b1SJaegeuk Kim 211504d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 211604d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 211704d47e67SChao Yu return false; 211804d47e67SChao Yu } 2119e05df3b1SJaegeuk Kim 212055008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 21219a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_build_free_nids(nm_i)) { 21229a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 21239a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2124b8559dc2SChao Yu struct free_nid, list); 2125e05df3b1SJaegeuk Kim *nid = i->nid; 2126b8559dc2SChao Yu 2127a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 212804d47e67SChao Yu nm_i->available_nids--; 21294ac91242SChao Yu 2130346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 21314ac91242SChao Yu 2132b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2133e05df3b1SJaegeuk Kim return true; 2134e05df3b1SJaegeuk Kim } 2135b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 213655008d84SJaegeuk Kim 213755008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 213822ad0b6aSJaegeuk Kim build_free_nids(sbi, true, false); 213955008d84SJaegeuk Kim goto retry; 214055008d84SJaegeuk Kim } 2141e05df3b1SJaegeuk Kim 21420a8165d7SJaegeuk Kim /* 2143e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2144e05df3b1SJaegeuk Kim */ 2145e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2146e05df3b1SJaegeuk Kim { 2147e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2148e05df3b1SJaegeuk Kim struct free_nid *i; 2149e05df3b1SJaegeuk Kim 2150b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21518a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2152b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2153a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2154b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2155cf0ee0f0SChao Yu 2156cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2157e05df3b1SJaegeuk Kim } 2158e05df3b1SJaegeuk Kim 21590a8165d7SJaegeuk Kim /* 2160e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2161e05df3b1SJaegeuk Kim */ 2162e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2163e05df3b1SJaegeuk Kim { 216449952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 216549952fa1SJaegeuk Kim struct free_nid *i; 2166cf0ee0f0SChao Yu bool need_free = false; 216749952fa1SJaegeuk Kim 216865985d93SJaegeuk Kim if (!nid) 216965985d93SJaegeuk Kim return; 217065985d93SJaegeuk Kim 2171b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21728a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2173b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2174b8559dc2SChao Yu 21756fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 2176a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2177cf0ee0f0SChao Yu need_free = true; 217895630cbaSHaicheng Li } else { 2179a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 218095630cbaSHaicheng Li } 218104d47e67SChao Yu 218204d47e67SChao Yu nm_i->available_nids++; 218304d47e67SChao Yu 2184346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 21854ac91242SChao Yu 2186b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2187cf0ee0f0SChao Yu 2188cf0ee0f0SChao Yu if (need_free) 2189cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2190e05df3b1SJaegeuk Kim } 2191e05df3b1SJaegeuk Kim 219231696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 219331696580SChao Yu { 219431696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 219531696580SChao Yu struct free_nid *i, *next; 219631696580SChao Yu int nr = nr_shrink; 219731696580SChao Yu 21989a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2199ad4edb83SJaegeuk Kim return 0; 2200ad4edb83SJaegeuk Kim 220131696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 220231696580SChao Yu return 0; 220331696580SChao Yu 2204b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22059a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2206b8559dc2SChao Yu if (nr_shrink <= 0 || 22079a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 220831696580SChao Yu break; 2209b8559dc2SChao Yu 2210a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 221131696580SChao Yu kmem_cache_free(free_nid_slab, i); 221231696580SChao Yu nr_shrink--; 221331696580SChao Yu } 2214b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 221531696580SChao Yu mutex_unlock(&nm_i->build_lock); 221631696580SChao Yu 221731696580SChao Yu return nr - nr_shrink; 221831696580SChao Yu } 221931696580SChao Yu 222070cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 222128cdce04SChao Yu { 222228cdce04SChao Yu void *src_addr, *dst_addr; 222328cdce04SChao Yu size_t inline_size; 222428cdce04SChao Yu struct page *ipage; 222528cdce04SChao Yu struct f2fs_inode *ri; 222628cdce04SChao Yu 22274081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 22289850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 222928cdce04SChao Yu 2230e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 22311eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 22321eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 22331eca05aaSYunlei He } else { 223491942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2235e3b4d43fSJaegeuk Kim goto update_inode; 2236e3b4d43fSJaegeuk Kim } 2237e3b4d43fSJaegeuk Kim 22386afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 22396afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 224028cdce04SChao Yu inline_size = inline_xattr_size(inode); 224128cdce04SChao Yu 2242fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 224328cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2244e3b4d43fSJaegeuk Kim update_inode: 224528cdce04SChao Yu update_inode(inode, ipage); 224628cdce04SChao Yu f2fs_put_page(ipage, 1); 224728cdce04SChao Yu } 224828cdce04SChao Yu 2249e17d488bSSheng Yong int recover_xattr_data(struct inode *inode, struct page *page) 2250abb2366cSJaegeuk Kim { 22514081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2252abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 225387905682SYunlei He nid_t new_xnid; 225487905682SYunlei He struct dnode_of_data dn; 2255abb2366cSJaegeuk Kim struct node_info ni; 2256d260081cSChao Yu struct page *xpage; 2257abb2366cSJaegeuk Kim 2258abb2366cSJaegeuk Kim if (!prev_xnid) 2259abb2366cSJaegeuk Kim goto recover_xnid; 2260abb2366cSJaegeuk Kim 2261d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2262abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 2263abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 2264000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2265479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2266abb2366cSJaegeuk Kim 2267abb2366cSJaegeuk Kim recover_xnid: 2268d260081cSChao Yu /* 2: update xattr nid in inode */ 226987905682SYunlei He if (!alloc_nid(sbi, &new_xnid)) 227087905682SYunlei He return -ENOSPC; 227187905682SYunlei He 227287905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 227387905682SYunlei He xpage = new_node_page(&dn, XATTR_NODE_OFFSET); 227487905682SYunlei He if (IS_ERR(xpage)) { 227587905682SYunlei He alloc_nid_failed(sbi, new_xnid); 227687905682SYunlei He return PTR_ERR(xpage); 227787905682SYunlei He } 227887905682SYunlei He 227987905682SYunlei He alloc_nid_done(sbi, new_xnid); 2280d260081cSChao Yu update_inode_page(inode); 2281abb2366cSJaegeuk Kim 2282d260081cSChao Yu /* 3: update and set xattr node page dirty */ 228387905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2284d260081cSChao Yu 2285d260081cSChao Yu set_page_dirty(xpage); 2286d260081cSChao Yu f2fs_put_page(xpage, 1); 2287abb2366cSJaegeuk Kim 2288d260081cSChao Yu return 0; 2289abb2366cSJaegeuk Kim } 2290abb2366cSJaegeuk Kim 2291e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2292e05df3b1SJaegeuk Kim { 229358bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2294e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2295e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2296e05df3b1SJaegeuk Kim struct page *ipage; 2297e05df3b1SJaegeuk Kim 2298e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2299e8271fa3SJaegeuk Kim 2300e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2301e8271fa3SJaegeuk Kim return -EINVAL; 2302e8ea9b3dSJaegeuk Kim retry: 2303300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2304e8ea9b3dSJaegeuk Kim if (!ipage) { 2305e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2306e8ea9b3dSJaegeuk Kim goto retry; 2307e8ea9b3dSJaegeuk Kim } 2308e05df3b1SJaegeuk Kim 2309e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2310b8559dc2SChao Yu remove_free_nid(sbi, ino); 2311e05df3b1SJaegeuk Kim 2312237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2313e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2314e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2315c5667575SChao Yu set_cold_node(page, false); 2316e05df3b1SJaegeuk Kim 231758bfaf44SJaegeuk Kim src = F2FS_INODE(page); 231858bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2319e05df3b1SJaegeuk Kim 232058bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 232158bfaf44SJaegeuk Kim dst->i_size = 0; 232258bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 232358bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 232458bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 23257a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 23265c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 23277a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 23286afc662eSChao Yu 23296afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 23306afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23316afc662eSChao Yu i_inline_xattr_size)) 23326afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 23336afc662eSChao Yu 23345c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 23355c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23365c57132eSChao Yu i_projid)) 23375c57132eSChao Yu dst->i_projid = src->i_projid; 23385c57132eSChao Yu } 2339e05df3b1SJaegeuk Kim 2340e05df3b1SJaegeuk Kim new_ni = old_ni; 2341e05df3b1SJaegeuk Kim new_ni.ino = ino; 2342e05df3b1SJaegeuk Kim 23430abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 234465e5cd0aSJaegeuk Kim WARN_ON(1); 2345479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2346e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2347617deb8cSJaegeuk Kim set_page_dirty(ipage); 2348e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2349e05df3b1SJaegeuk Kim return 0; 2350e05df3b1SJaegeuk Kim } 2351e05df3b1SJaegeuk Kim 2352c376fc0fSYunlei He void restore_node_summary(struct f2fs_sb_info *sbi, 2353e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2354e05df3b1SJaegeuk Kim { 2355e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2356e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2357e05df3b1SJaegeuk Kim block_t addr; 23589ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2359e05df3b1SJaegeuk Kim 2360e05df3b1SJaegeuk Kim /* scan the node segment */ 2361e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2362e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2363e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2364e05df3b1SJaegeuk Kim 23659ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2366664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2367393ff91fSJaegeuk Kim 23689af0ff1cSChao Yu /* readahead node pages */ 236926879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 23709af0ff1cSChao Yu 23719ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 23722b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2373393ff91fSJaegeuk Kim 23749ecf4b80SChao Yu rn = F2FS_NODE(page); 2375393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2376393ff91fSJaegeuk Kim sum_entry->version = 0; 2377393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 23789af0ff1cSChao Yu sum_entry++; 23799ecf4b80SChao Yu f2fs_put_page(page, 1); 23809af0ff1cSChao Yu } 2381bac4eef6SChao Yu 23829ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2383bac4eef6SChao Yu addr + nrpages); 23849af0ff1cSChao Yu } 2385e05df3b1SJaegeuk Kim } 2386e05df3b1SJaegeuk Kim 2387aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2388e05df3b1SJaegeuk Kim { 2389e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2390e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2391b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2392e05df3b1SJaegeuk Kim int i; 2393e05df3b1SJaegeuk Kim 2394b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2395dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2396e05df3b1SJaegeuk Kim struct nat_entry *ne; 2397e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2398dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2399e05df3b1SJaegeuk Kim 2400dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 24019be32d72SJaegeuk Kim 2402e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2403e05df3b1SJaegeuk Kim if (!ne) { 240412f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 240512f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 24069be32d72SJaegeuk Kim } 240704d47e67SChao Yu 240804d47e67SChao Yu /* 240904d47e67SChao Yu * if a free nat in journal has not been used after last 241004d47e67SChao Yu * checkpoint, we should remove it from available nids, 241104d47e67SChao Yu * since later we will add it again. 241204d47e67SChao Yu */ 241304d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 241404d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 241504d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 241604d47e67SChao Yu nm_i->available_nids--; 241704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 241804d47e67SChao Yu } 241904d47e67SChao Yu 2420e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2421e05df3b1SJaegeuk Kim } 2422dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2423b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2424e05df3b1SJaegeuk Kim } 2425e05df3b1SJaegeuk Kim 2426309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2427309cc2b6SJaegeuk Kim struct list_head *head, int max) 2428e05df3b1SJaegeuk Kim { 2429309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2430e05df3b1SJaegeuk Kim 2431309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2432309cc2b6SJaegeuk Kim goto add_out; 2433e05df3b1SJaegeuk Kim 2434309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2435309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2436309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2437309cc2b6SJaegeuk Kim return; 2438309cc2b6SJaegeuk Kim } 2439309cc2b6SJaegeuk Kim } 2440309cc2b6SJaegeuk Kim add_out: 2441309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2442aec71382SChao Yu } 2443aec71382SChao Yu 24449f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 244522ad0b6aSJaegeuk Kim struct page *page) 244622ad0b6aSJaegeuk Kim { 244722ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 244822ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 244922ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 245022ad0b6aSJaegeuk Kim int valid = 0; 245137a0ab2aSFan Li int i = 0; 245222ad0b6aSJaegeuk Kim 245322ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 245422ad0b6aSJaegeuk Kim return; 245522ad0b6aSJaegeuk Kim 245637a0ab2aSFan Li if (nat_index == 0) { 245737a0ab2aSFan Li valid = 1; 245837a0ab2aSFan Li i = 1; 245937a0ab2aSFan Li } 246037a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 246137a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 246222ad0b6aSJaegeuk Kim valid++; 246322ad0b6aSJaegeuk Kim } 246422ad0b6aSJaegeuk Kim if (valid == 0) { 246523380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 246623380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 246722ad0b6aSJaegeuk Kim return; 246822ad0b6aSJaegeuk Kim } 246922ad0b6aSJaegeuk Kim 247023380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 247122ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 247223380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 247322ad0b6aSJaegeuk Kim else 247423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 247522ad0b6aSJaegeuk Kim } 247622ad0b6aSJaegeuk Kim 2477309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 247822ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2479309cc2b6SJaegeuk Kim { 2480309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2481b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2482309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2483309cc2b6SJaegeuk Kim bool to_journal = true; 2484309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2485309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2486309cc2b6SJaegeuk Kim struct page *page = NULL; 2487aec71382SChao Yu 2488aec71382SChao Yu /* 2489aec71382SChao Yu * there are two steps to flush nat entries: 2490aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2491aec71382SChao Yu * #2, flush nat entries to nat page. 2492aec71382SChao Yu */ 249322ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 249422ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2495aec71382SChao Yu to_journal = false; 2496aec71382SChao Yu 2497aec71382SChao Yu if (to_journal) { 2498b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2499aec71382SChao Yu } else { 2500e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2501e05df3b1SJaegeuk Kim nat_blk = page_address(page); 25029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2503e05df3b1SJaegeuk Kim } 2504e05df3b1SJaegeuk Kim 2505aec71382SChao Yu /* flush dirty nats in nat entry set */ 2506309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2507aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2508aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2509aec71382SChao Yu int offset; 2510aec71382SChao Yu 2511febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2512309cc2b6SJaegeuk Kim 2513aec71382SChao Yu if (to_journal) { 2514dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2515aec71382SChao Yu NAT_JOURNAL, nid, 1); 25169850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2517dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2518dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2519aec71382SChao Yu } else { 2520aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2521aec71382SChao Yu } 2522aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 252388bd02c9SJaegeuk Kim nat_reset_flag(ne); 25240b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 252504d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 25265921aaa1SLiFan add_free_nid(sbi, nid, false, true); 25274ac91242SChao Yu } else { 25284ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2529346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 253004d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 253104d47e67SChao Yu } 2532e05df3b1SJaegeuk Kim } 2533aec71382SChao Yu 253422ad0b6aSJaegeuk Kim if (to_journal) { 2535b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 253622ad0b6aSJaegeuk Kim } else { 253722ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2538e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 253922ad0b6aSJaegeuk Kim } 2540aec71382SChao Yu 254159c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 254259c9081bSYunlei He if (!set->entry_cnt) { 2543309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2544309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2545309cc2b6SJaegeuk Kim } 254659c9081bSYunlei He } 2547aec71382SChao Yu 2548309cc2b6SJaegeuk Kim /* 2549309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2550309cc2b6SJaegeuk Kim */ 255122ad0b6aSJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2552309cc2b6SJaegeuk Kim { 2553309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2554309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2555b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 25567aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2557309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2558309cc2b6SJaegeuk Kim unsigned int found; 2559309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2560309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2561309cc2b6SJaegeuk Kim 256220d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 256320d047c8SChangman Lee return; 2564a5131193SJaegeuk Kim 2565b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2566a5131193SJaegeuk Kim 2567309cc2b6SJaegeuk Kim /* 2568309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2569309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2570309cc2b6SJaegeuk Kim * into nat entry set. 2571309cc2b6SJaegeuk Kim */ 2572900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 257322ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2574309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2575309cc2b6SJaegeuk Kim 2576309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 25777aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2578309cc2b6SJaegeuk Kim unsigned idx; 2579309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2580309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2581309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2582dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2583309cc2b6SJaegeuk Kim } 2584309cc2b6SJaegeuk Kim 2585309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2586309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 258722ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2588309cc2b6SJaegeuk Kim 2589b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 259059c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2591e05df3b1SJaegeuk Kim } 2592e05df3b1SJaegeuk Kim 259322ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 259422ad0b6aSJaegeuk Kim { 259522ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 259622ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 259722ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 259822ad0b6aSJaegeuk Kim unsigned int i; 259922ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 260022ad0b6aSJaegeuk Kim block_t nat_bits_addr; 260122ad0b6aSJaegeuk Kim 260222ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 260322ad0b6aSJaegeuk Kim return 0; 260422ad0b6aSJaegeuk Kim 2605df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2606acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2607acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 260822ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 260922ad0b6aSJaegeuk Kim return -ENOMEM; 261022ad0b6aSJaegeuk Kim 261122ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 261222ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 261322ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 261422ad0b6aSJaegeuk Kim struct page *page = get_meta_page(sbi, nat_bits_addr++); 261522ad0b6aSJaegeuk Kim 261622ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 261722ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 261822ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 261922ad0b6aSJaegeuk Kim } 262022ad0b6aSJaegeuk Kim 2621ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 262222ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 262322ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 262422ad0b6aSJaegeuk Kim return 0; 262522ad0b6aSJaegeuk Kim } 262622ad0b6aSJaegeuk Kim 262722ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 262822ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 262922ad0b6aSJaegeuk Kim 263022ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 263122ad0b6aSJaegeuk Kim return 0; 263222ad0b6aSJaegeuk Kim } 263322ad0b6aSJaegeuk Kim 2634bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 26357041d5d2SChao Yu { 26367041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 26377041d5d2SChao Yu unsigned int i = 0; 26387041d5d2SChao Yu nid_t nid, last_nid; 26397041d5d2SChao Yu 26407041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 26417041d5d2SChao Yu return; 26427041d5d2SChao Yu 26437041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26447041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 26457041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26467041d5d2SChao Yu break; 26477041d5d2SChao Yu 26487041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26497041d5d2SChao Yu 26507041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2651f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 26527041d5d2SChao Yu 2653346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 26547041d5d2SChao Yu for (; nid < last_nid; nid++) 2655346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2656346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 26577041d5d2SChao Yu } 26587041d5d2SChao Yu 26597041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26607041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 26617041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26627041d5d2SChao Yu break; 26637041d5d2SChao Yu 26647041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26657041d5d2SChao Yu } 26667041d5d2SChao Yu } 26677041d5d2SChao Yu 2668e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2669e05df3b1SJaegeuk Kim { 2670e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2671e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2672e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 267322ad0b6aSJaegeuk Kim unsigned int nat_segs; 267422ad0b6aSJaegeuk Kim int err; 2675e05df3b1SJaegeuk Kim 2676e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2677e05df3b1SJaegeuk Kim 2678e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2679e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 268022ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 268122ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 26827ee0eeabSJaegeuk Kim 2683b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 268404d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2685292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 26869a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 26879a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2688e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2689cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2690ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 26912304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2692e05df3b1SJaegeuk Kim 26938a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 26949a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2695769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2696769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2697e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2698e05df3b1SJaegeuk Kim 2699e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2700b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2701b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2702e05df3b1SJaegeuk Kim 2703e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 270479b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2705e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2706e05df3b1SJaegeuk Kim if (!version_bitmap) 2707e05df3b1SJaegeuk Kim return -EFAULT; 2708e05df3b1SJaegeuk Kim 270979b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 271079b5793bSAlexandru Gheorghiu GFP_KERNEL); 271179b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 271279b5793bSAlexandru Gheorghiu return -ENOMEM; 2713599a09b2SChao Yu 271422ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 271522ad0b6aSJaegeuk Kim if (err) 271622ad0b6aSJaegeuk Kim return err; 271722ad0b6aSJaegeuk Kim 2718599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2719599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2720599a09b2SChao Yu GFP_KERNEL); 2721599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2722599a09b2SChao Yu return -ENOMEM; 2723599a09b2SChao Yu #endif 2724599a09b2SChao Yu 2725e05df3b1SJaegeuk Kim return 0; 2726e05df3b1SJaegeuk Kim } 2727e05df3b1SJaegeuk Kim 27289f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 27294ac91242SChao Yu { 27304ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2731bb1105e4SJaegeuk Kim int i; 27324ac91242SChao Yu 2733bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap = f2fs_kzalloc(sbi, nm_i->nat_blocks * 2734bb1105e4SJaegeuk Kim sizeof(unsigned char *), GFP_KERNEL); 27354ac91242SChao Yu if (!nm_i->free_nid_bitmap) 27364ac91242SChao Yu return -ENOMEM; 27374ac91242SChao Yu 2738bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 2739bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 2740bb1105e4SJaegeuk Kim NAT_ENTRY_BITMAP_SIZE_ALIGNED, GFP_KERNEL); 2741bb1105e4SJaegeuk Kim if (!nm_i->free_nid_bitmap) 2742bb1105e4SJaegeuk Kim return -ENOMEM; 2743bb1105e4SJaegeuk Kim } 2744bb1105e4SJaegeuk Kim 2745628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 27464ac91242SChao Yu GFP_KERNEL); 27474ac91242SChao Yu if (!nm_i->nat_block_bitmap) 27484ac91242SChao Yu return -ENOMEM; 2749586d1492SChao Yu 2750628b3d14SChao Yu nm_i->free_nid_count = f2fs_kvzalloc(sbi, nm_i->nat_blocks * 2751586d1492SChao Yu sizeof(unsigned short), GFP_KERNEL); 2752586d1492SChao Yu if (!nm_i->free_nid_count) 2753586d1492SChao Yu return -ENOMEM; 27544ac91242SChao Yu return 0; 27554ac91242SChao Yu } 27564ac91242SChao Yu 2757e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2758e05df3b1SJaegeuk Kim { 2759e05df3b1SJaegeuk Kim int err; 2760e05df3b1SJaegeuk Kim 2761acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 2762acbf054dSChao Yu GFP_KERNEL); 2763e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2764e05df3b1SJaegeuk Kim return -ENOMEM; 2765e05df3b1SJaegeuk Kim 2766e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2767e05df3b1SJaegeuk Kim if (err) 2768e05df3b1SJaegeuk Kim return err; 2769e05df3b1SJaegeuk Kim 27704ac91242SChao Yu err = init_free_nid_cache(sbi); 27714ac91242SChao Yu if (err) 27724ac91242SChao Yu return err; 27734ac91242SChao Yu 27747041d5d2SChao Yu /* load free nid status from nat_bits table */ 27757041d5d2SChao Yu load_free_nid_bitmap(sbi); 27767041d5d2SChao Yu 277722ad0b6aSJaegeuk Kim build_free_nids(sbi, true, true); 2778e05df3b1SJaegeuk Kim return 0; 2779e05df3b1SJaegeuk Kim } 2780e05df3b1SJaegeuk Kim 2781e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2782e05df3b1SJaegeuk Kim { 2783e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2784e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2785e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 27867aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2787e05df3b1SJaegeuk Kim nid_t nid = 0; 2788e05df3b1SJaegeuk Kim unsigned int found; 2789e05df3b1SJaegeuk Kim 2790e05df3b1SJaegeuk Kim if (!nm_i) 2791e05df3b1SJaegeuk Kim return; 2792e05df3b1SJaegeuk Kim 2793e05df3b1SJaegeuk Kim /* destroy free nid list */ 2794b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 27959a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 2796a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2797b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2798cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2799b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2800e05df3b1SJaegeuk Kim } 28019a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 28029a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 28039a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 2804b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2805e05df3b1SJaegeuk Kim 2806e05df3b1SJaegeuk Kim /* destroy nat cache */ 2807b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2808e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2809e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2810e05df3b1SJaegeuk Kim unsigned idx; 28117aed0d45SJaegeuk Kim 2812b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2813b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2814b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2815e05df3b1SJaegeuk Kim } 28169850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 28177aed0d45SJaegeuk Kim 28187aed0d45SJaegeuk Kim /* destroy nat set cache */ 28197aed0d45SJaegeuk Kim nid = 0; 28207aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 28217aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 28227aed0d45SJaegeuk Kim unsigned idx; 28237aed0d45SJaegeuk Kim 28247aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 28257aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 28267aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 28277aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 28287aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 28297aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 28307aed0d45SJaegeuk Kim } 28317aed0d45SJaegeuk Kim } 2832b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2833e05df3b1SJaegeuk Kim 28344ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 2835bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 2836bb1105e4SJaegeuk Kim int i; 2837bb1105e4SJaegeuk Kim 2838bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 2839bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 2840bb1105e4SJaegeuk Kim kfree(nm_i->free_nid_bitmap); 2841bb1105e4SJaegeuk Kim } 2842586d1492SChao Yu kvfree(nm_i->free_nid_count); 28434ac91242SChao Yu 2844e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 284522ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2846599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2847599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2848599a09b2SChao Yu #endif 2849e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2850e05df3b1SJaegeuk Kim kfree(nm_i); 2851e05df3b1SJaegeuk Kim } 2852e05df3b1SJaegeuk Kim 28536e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2854e05df3b1SJaegeuk Kim { 2855e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2856e8512d2eSGu Zheng sizeof(struct nat_entry)); 2857e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2858aec71382SChao Yu goto fail; 2859e05df3b1SJaegeuk Kim 2860e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2861e8512d2eSGu Zheng sizeof(struct free_nid)); 2862aec71382SChao Yu if (!free_nid_slab) 2863ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2864aec71382SChao Yu 2865aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2866aec71382SChao Yu sizeof(struct nat_entry_set)); 2867aec71382SChao Yu if (!nat_entry_set_slab) 2868ce3e6d25SMarkus Elfring goto destroy_free_nid; 2869e05df3b1SJaegeuk Kim return 0; 2870aec71382SChao Yu 2871ce3e6d25SMarkus Elfring destroy_free_nid: 2872aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2873ce3e6d25SMarkus Elfring destroy_nat_entry: 2874aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2875aec71382SChao Yu fail: 2876aec71382SChao Yu return -ENOMEM; 2877e05df3b1SJaegeuk Kim } 2878e05df3b1SJaegeuk Kim 2879e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2880e05df3b1SJaegeuk Kim { 2881aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2882e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2883e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2884e05df3b1SJaegeuk Kim } 2885