10a8165d7SJaegeuk Kim /* 2e05df3b1SJaegeuk Kim * fs/f2fs/node.c 3e05df3b1SJaegeuk Kim * 4e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5e05df3b1SJaegeuk Kim * http://www.samsung.com/ 6e05df3b1SJaegeuk Kim * 7e05df3b1SJaegeuk Kim * This program is free software; you can redistribute it and/or modify 8e05df3b1SJaegeuk Kim * it under the terms of the GNU General Public License version 2 as 9e05df3b1SJaegeuk Kim * published by the Free Software Foundation. 10e05df3b1SJaegeuk Kim */ 11e05df3b1SJaegeuk Kim #include <linux/fs.h> 12e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 13e05df3b1SJaegeuk Kim #include <linux/mpage.h> 14e05df3b1SJaegeuk Kim #include <linux/backing-dev.h> 15e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 16e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 17e05df3b1SJaegeuk Kim #include <linux/swap.h> 18e05df3b1SJaegeuk Kim 19e05df3b1SJaegeuk Kim #include "f2fs.h" 20e05df3b1SJaegeuk Kim #include "node.h" 21e05df3b1SJaegeuk Kim #include "segment.h" 2287905682SYunlei He #include "xattr.h" 239e4ded3fSJaegeuk Kim #include "trace.h" 2451dd6249SNamjae Jeon #include <trace/events/f2fs.h> 25e05df3b1SJaegeuk Kim 264d57b86dSChao Yu #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) 27f978f5a0SGu Zheng 28e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 29e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 30aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 31e05df3b1SJaegeuk Kim 32a4f843bdSJaegeuk Kim /* 33a4f843bdSJaegeuk Kim * Check whether the given nid is within node id range. 34a4f843bdSJaegeuk Kim */ 354d57b86dSChao Yu int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 36a4f843bdSJaegeuk Kim { 37a4f843bdSJaegeuk Kim if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) { 38a4f843bdSJaegeuk Kim set_sbi_flag(sbi, SBI_NEED_FSCK); 39a4f843bdSJaegeuk Kim f2fs_msg(sbi->sb, KERN_WARNING, 40a4f843bdSJaegeuk Kim "%s: out-of-range nid=%x, run fsck to fix.", 41a4f843bdSJaegeuk Kim __func__, nid); 42a4f843bdSJaegeuk Kim return -EINVAL; 43a4f843bdSJaegeuk Kim } 44a4f843bdSJaegeuk Kim return 0; 45a4f843bdSJaegeuk Kim } 46a4f843bdSJaegeuk Kim 474d57b86dSChao Yu bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) 48cdfc41c1SJaegeuk Kim { 496fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 50cdfc41c1SJaegeuk Kim struct sysinfo val; 51e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 52cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 536fb03f3aSJaegeuk Kim bool res = false; 54cdfc41c1SJaegeuk Kim 55cdfc41c1SJaegeuk Kim si_meminfo(&val); 56e5e7ea3cSJaegeuk Kim 57e5e7ea3cSJaegeuk Kim /* only uses low memory */ 58e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 59e5e7ea3cSJaegeuk Kim 60429511cdSChao Yu /* 61429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 62429511cdSChao Yu */ 636fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 649a4ffdf5SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID] * 65b8559dc2SChao Yu sizeof(struct free_nid)) >> PAGE_SHIFT; 66e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 676fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 68e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 6909cbfeafSKirill A. Shutemov PAGE_SHIFT; 70e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 71e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 72e589c2c4SJaegeuk Kim res = false; 73a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 74a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 75a1257023SJaegeuk Kim return false; 76a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 77a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 78e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 79e5e7ea3cSJaegeuk Kim int i; 80e5e7ea3cSJaegeuk Kim 8139d787beSChao Yu for (i = 0; i < MAX_INO_ENTRY; i++) 828f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 838f73cbb7SKinglong Mee sizeof(struct ino_entry); 848f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 85e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 86429511cdSChao Yu } else if (type == EXTENT_CACHE) { 877441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 887441ccefSJaegeuk Kim sizeof(struct extent_tree) + 89429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 9009cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 91429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 9257864ae5SJaegeuk Kim } else if (type == INMEM_PAGES) { 9357864ae5SJaegeuk Kim /* it allows 20% / total_ram for inmemory pages */ 9457864ae5SJaegeuk Kim mem_size = get_pages(sbi, F2FS_INMEM_PAGES); 9557864ae5SJaegeuk Kim res = mem_size < (val.totalram / 5); 961e84371fSJaegeuk Kim } else { 971663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 981663cae4SJaegeuk Kim return true; 996fb03f3aSJaegeuk Kim } 1006fb03f3aSJaegeuk Kim return res; 101cdfc41c1SJaegeuk Kim } 102cdfc41c1SJaegeuk Kim 103e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 104e05df3b1SJaegeuk Kim { 105e05df3b1SJaegeuk Kim if (PageDirty(page)) { 1064d57b86dSChao Yu f2fs_clear_radix_tree_dirty_tag(page); 107e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 108aec2f729SChao Yu dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 109e05df3b1SJaegeuk Kim } 110e05df3b1SJaegeuk Kim ClearPageUptodate(page); 111e05df3b1SJaegeuk Kim } 112e05df3b1SJaegeuk Kim 113e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 114e05df3b1SJaegeuk Kim { 11580551d17SChao Yu return f2fs_get_meta_page_nofail(sbi, current_nat_addr(sbi, nid)); 116e05df3b1SJaegeuk Kim } 117e05df3b1SJaegeuk Kim 118e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 119e05df3b1SJaegeuk Kim { 120e05df3b1SJaegeuk Kim struct page *src_page; 121e05df3b1SJaegeuk Kim struct page *dst_page; 122e05df3b1SJaegeuk Kim pgoff_t dst_off; 123e05df3b1SJaegeuk Kim void *src_addr; 124e05df3b1SJaegeuk Kim void *dst_addr; 125e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 126e05df3b1SJaegeuk Kim 12780551d17SChao Yu dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); 128e05df3b1SJaegeuk Kim 129e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 13080551d17SChao Yu src_page = get_current_nat_page(sbi, nid); 1314d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1329850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 133e05df3b1SJaegeuk Kim 134e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 135e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13609cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 137e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 138e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 139e05df3b1SJaegeuk Kim 140e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 141e05df3b1SJaegeuk Kim 142e05df3b1SJaegeuk Kim return dst_page; 143e05df3b1SJaegeuk Kim } 144e05df3b1SJaegeuk Kim 14512f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 14612f9ef37SYunlei He { 14712f9ef37SYunlei He struct nat_entry *new; 14812f9ef37SYunlei He 14912f9ef37SYunlei He if (no_fail) 1502882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15112f9ef37SYunlei He else 1522882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15312f9ef37SYunlei He if (new) { 15412f9ef37SYunlei He nat_set_nid(new, nid); 15512f9ef37SYunlei He nat_reset_flag(new); 15612f9ef37SYunlei He } 15712f9ef37SYunlei He return new; 15812f9ef37SYunlei He } 15912f9ef37SYunlei He 16012f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 16112f9ef37SYunlei He { 16212f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 16312f9ef37SYunlei He } 16412f9ef37SYunlei He 16512f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16612f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 16712f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 16812f9ef37SYunlei He { 16912f9ef37SYunlei He if (no_fail) 17012f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 17112f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 17212f9ef37SYunlei He return NULL; 17312f9ef37SYunlei He 17412f9ef37SYunlei He if (raw_ne) 17512f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17612f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 17712f9ef37SYunlei He nm_i->nat_cnt++; 17812f9ef37SYunlei He return ne; 17912f9ef37SYunlei He } 18012f9ef37SYunlei He 181e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 182e05df3b1SJaegeuk Kim { 183e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 184e05df3b1SJaegeuk Kim } 185e05df3b1SJaegeuk Kim 186e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 187e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 188e05df3b1SJaegeuk Kim { 189e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 190e05df3b1SJaegeuk Kim } 191e05df3b1SJaegeuk Kim 192e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 193e05df3b1SJaegeuk Kim { 194e05df3b1SJaegeuk Kim list_del(&e->list); 195e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 196e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 19712f9ef37SYunlei He __free_nat_entry(e); 198e05df3b1SJaegeuk Kim } 199e05df3b1SJaegeuk Kim 200780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 201309cc2b6SJaegeuk Kim struct nat_entry *ne) 202309cc2b6SJaegeuk Kim { 203309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 204309cc2b6SJaegeuk Kim struct nat_entry_set *head; 205309cc2b6SJaegeuk Kim 206309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 207309cc2b6SJaegeuk Kim if (!head) { 20880c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 209309cc2b6SJaegeuk Kim 210309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 211309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 212309cc2b6SJaegeuk Kim head->set = set; 213309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2149be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 215309cc2b6SJaegeuk Kim } 216780de47cSChao Yu return head; 217780de47cSChao Yu } 218780de47cSChao Yu 219780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 220780de47cSChao Yu struct nat_entry *ne) 221780de47cSChao Yu { 222780de47cSChao Yu struct nat_entry_set *head; 223780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 224780de47cSChao Yu 225780de47cSChao Yu if (!new_ne) 226780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 227780de47cSChao Yu 228780de47cSChao Yu /* 229780de47cSChao Yu * update entry_cnt in below condition: 230780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 231780de47cSChao Yu * 2. update old block address to new one; 232780de47cSChao Yu */ 233780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 234780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 235780de47cSChao Yu head->entry_cnt++; 236780de47cSChao Yu 237780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 238febeca6dSChao Yu 239febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 240febeca6dSChao Yu goto refresh_list; 241febeca6dSChao Yu 242309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 243309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 244febeca6dSChao Yu refresh_list: 245780de47cSChao Yu if (new_ne) 246febeca6dSChao Yu list_del_init(&ne->list); 247febeca6dSChao Yu else 248febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 249309cc2b6SJaegeuk Kim } 250309cc2b6SJaegeuk Kim 251309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2520b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 253309cc2b6SJaegeuk Kim { 254309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 255309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2560b28b71eSKinglong Mee set->entry_cnt--; 257309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 258309cc2b6SJaegeuk Kim } 259309cc2b6SJaegeuk Kim 260309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 261309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 262309cc2b6SJaegeuk Kim { 263309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 264309cc2b6SJaegeuk Kim start, nr); 265309cc2b6SJaegeuk Kim } 266309cc2b6SJaegeuk Kim 2674d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2682dcf51abSJaegeuk Kim { 2692dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2702dcf51abSJaegeuk Kim struct nat_entry *e; 2712dcf51abSJaegeuk Kim bool need = false; 2722dcf51abSJaegeuk Kim 273b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2742dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2752dcf51abSJaegeuk Kim if (e) { 2762dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2772dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2782dcf51abSJaegeuk Kim need = true; 2792dcf51abSJaegeuk Kim } 280b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2812dcf51abSJaegeuk Kim return need; 2822dcf51abSJaegeuk Kim } 2832dcf51abSJaegeuk Kim 2844d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 285e05df3b1SJaegeuk Kim { 286e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 287e05df3b1SJaegeuk Kim struct nat_entry *e; 28888bd02c9SJaegeuk Kim bool is_cp = true; 289e05df3b1SJaegeuk Kim 290b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 291e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2927ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 29388bd02c9SJaegeuk Kim is_cp = false; 294b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 295e05df3b1SJaegeuk Kim return is_cp; 296e05df3b1SJaegeuk Kim } 297e05df3b1SJaegeuk Kim 2984d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 299b6fe5873SJaegeuk Kim { 300b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 301b6fe5873SJaegeuk Kim struct nat_entry *e; 30288bd02c9SJaegeuk Kim bool need_update = true; 303b6fe5873SJaegeuk Kim 304b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 30588bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 30688bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 30788bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 30888bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 30988bd02c9SJaegeuk Kim need_update = false; 310b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 31188bd02c9SJaegeuk Kim return need_update; 312b6fe5873SJaegeuk Kim } 313b6fe5873SJaegeuk Kim 31412f9ef37SYunlei He /* must be locked by nat_tree_lock */ 3151515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 316e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 317e05df3b1SJaegeuk Kim { 3181515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 31912f9ef37SYunlei He struct nat_entry *new, *e; 3209be32d72SJaegeuk Kim 32112f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 32212f9ef37SYunlei He if (!new) 32312f9ef37SYunlei He return; 32412f9ef37SYunlei He 32512f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 326e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 32712f9ef37SYunlei He if (!e) 32812f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 32912f9ef37SYunlei He else 3300c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 3310c0b471eSEric Biggers nat_get_blkaddr(e) != 3320c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 3331515aef0SChao Yu nat_get_version(e) != ne->version); 33412f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 33512f9ef37SYunlei He if (e != new) 33612f9ef37SYunlei He __free_nat_entry(new); 337e05df3b1SJaegeuk Kim } 338e05df3b1SJaegeuk Kim 339e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 340479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 341e05df3b1SJaegeuk Kim { 342e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 343e05df3b1SJaegeuk Kim struct nat_entry *e; 34412f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 3459be32d72SJaegeuk Kim 346b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 347e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 348e05df3b1SJaegeuk Kim if (!e) { 34912f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 3505c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3519850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 352e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 353e05df3b1SJaegeuk Kim /* 354e05df3b1SJaegeuk Kim * when nid is reallocated, 355e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 356e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 357e05df3b1SJaegeuk Kim */ 3585c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3599850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 360e05df3b1SJaegeuk Kim } 36112f9ef37SYunlei He /* let's free early to reduce memory consumption */ 36212f9ef37SYunlei He if (e != new) 36312f9ef37SYunlei He __free_nat_entry(new); 364e05df3b1SJaegeuk Kim 365e05df3b1SJaegeuk Kim /* sanity check */ 3669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3679850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 368e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3699850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 370e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 371e1da7872SChao Yu f2fs_bug_on(sbi, is_valid_data_blkaddr(sbi, nat_get_blkaddr(e)) && 372e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 373e05df3b1SJaegeuk Kim 374e1c42045Sarter97 /* increment version no as node is removed */ 375e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 376e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 377e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 378e05df3b1SJaegeuk Kim } 379e05df3b1SJaegeuk Kim 380e05df3b1SJaegeuk Kim /* change address */ 381e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 382e1da7872SChao Yu if (!is_valid_data_blkaddr(sbi, new_blkaddr)) 38388bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 384e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 385479f40c4SJaegeuk Kim 386479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 387d5b692b7SChao Yu if (ni->nid != ni->ino) 388479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 38988bd02c9SJaegeuk Kim if (e) { 39088bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 39188bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 39288bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 39388bd02c9SJaegeuk Kim } 394b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 395e05df3b1SJaegeuk Kim } 396e05df3b1SJaegeuk Kim 3974d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 398e05df3b1SJaegeuk Kim { 399e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 4001b38dc8eSJaegeuk Kim int nr = nr_shrink; 401e05df3b1SJaegeuk Kim 402b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 403b873b798SJaegeuk Kim return 0; 404e05df3b1SJaegeuk Kim 405e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 406e05df3b1SJaegeuk Kim struct nat_entry *ne; 407e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 408e05df3b1SJaegeuk Kim struct nat_entry, list); 409e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 410e05df3b1SJaegeuk Kim nr_shrink--; 411e05df3b1SJaegeuk Kim } 412b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 4131b38dc8eSJaegeuk Kim return nr - nr_shrink; 414e05df3b1SJaegeuk Kim } 415e05df3b1SJaegeuk Kim 4160a8165d7SJaegeuk Kim /* 417e1c42045Sarter97 * This function always returns success 418e05df3b1SJaegeuk Kim */ 4197735730dSChao Yu int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 4204d57b86dSChao Yu struct node_info *ni) 421e05df3b1SJaegeuk Kim { 422e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 423e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 424b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 425e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 426e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 427e05df3b1SJaegeuk Kim struct page *page = NULL; 428e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 429e05df3b1SJaegeuk Kim struct nat_entry *e; 43066a82d1fSYunlei He pgoff_t index; 431e05df3b1SJaegeuk Kim int i; 432e05df3b1SJaegeuk Kim 433e05df3b1SJaegeuk Kim ni->nid = nid; 434e05df3b1SJaegeuk Kim 435e05df3b1SJaegeuk Kim /* Check nat cache */ 436b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 437e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 438e05df3b1SJaegeuk Kim if (e) { 439e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 440e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 441e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 442b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 4437735730dSChao Yu return 0; 4441515aef0SChao Yu } 445e05df3b1SJaegeuk Kim 4463547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 4473547ea96SJaegeuk Kim 448e05df3b1SJaegeuk Kim /* Check current segment summary */ 449b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 4504d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 451e05df3b1SJaegeuk Kim if (i >= 0) { 452dfc08a12SChao Yu ne = nat_in_journal(journal, i); 453e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 454e05df3b1SJaegeuk Kim } 455b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 45666a82d1fSYunlei He if (i >= 0) { 45766a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 458e05df3b1SJaegeuk Kim goto cache; 45966a82d1fSYunlei He } 460e05df3b1SJaegeuk Kim 461e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 46266a82d1fSYunlei He index = current_nat_addr(sbi, nid); 46366a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 46466a82d1fSYunlei He 4654d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 4667735730dSChao Yu if (IS_ERR(page)) 4677735730dSChao Yu return PTR_ERR(page); 4687735730dSChao Yu 469e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 470e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 471e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 472e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 473e05df3b1SJaegeuk Kim cache: 474e05df3b1SJaegeuk Kim /* cache nat entry */ 4751515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 4767735730dSChao Yu return 0; 477e05df3b1SJaegeuk Kim } 478e05df3b1SJaegeuk Kim 47979344efbSJaegeuk Kim /* 48079344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 48179344efbSJaegeuk Kim */ 4824d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 48379344efbSJaegeuk Kim { 48479344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 48579344efbSJaegeuk Kim struct blk_plug plug; 48679344efbSJaegeuk Kim int i, end; 48779344efbSJaegeuk Kim nid_t nid; 48879344efbSJaegeuk Kim 48979344efbSJaegeuk Kim blk_start_plug(&plug); 49079344efbSJaegeuk Kim 49179344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 49279344efbSJaegeuk Kim end = start + n; 49379344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 49479344efbSJaegeuk Kim for (i = start; i < end; i++) { 49579344efbSJaegeuk Kim nid = get_nid(parent, i, false); 4964d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 49779344efbSJaegeuk Kim } 49879344efbSJaegeuk Kim 49979344efbSJaegeuk Kim blk_finish_plug(&plug); 50079344efbSJaegeuk Kim } 50179344efbSJaegeuk Kim 5024d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 5033cf45747SChao Yu { 5043cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 5053cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 5063cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 5073cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 5083cf45747SChao Yu int cur_level = dn->cur_level; 5093cf45747SChao Yu int max_level = dn->max_level; 5103cf45747SChao Yu pgoff_t base = 0; 5113cf45747SChao Yu 5123cf45747SChao Yu if (!dn->max_level) 5133cf45747SChao Yu return pgofs + 1; 5143cf45747SChao Yu 5153cf45747SChao Yu while (max_level-- > cur_level) 5163cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 5173cf45747SChao Yu 5183cf45747SChao Yu switch (dn->max_level) { 5193cf45747SChao Yu case 3: 5203cf45747SChao Yu base += 2 * indirect_blks; 5213cf45747SChao Yu case 2: 5223cf45747SChao Yu base += 2 * direct_blks; 5233cf45747SChao Yu case 1: 5243cf45747SChao Yu base += direct_index; 5253cf45747SChao Yu break; 5263cf45747SChao Yu default: 5273cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 5283cf45747SChao Yu } 5293cf45747SChao Yu 5303cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 5313cf45747SChao Yu } 5323cf45747SChao Yu 5330a8165d7SJaegeuk Kim /* 534e05df3b1SJaegeuk Kim * The maximum depth is four. 535e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 536e05df3b1SJaegeuk Kim */ 53781ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 538de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 539e05df3b1SJaegeuk Kim { 54081ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 541e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 542e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 543e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 544e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 545e05df3b1SJaegeuk Kim int n = 0; 546e05df3b1SJaegeuk Kim int level = 0; 547e05df3b1SJaegeuk Kim 548e05df3b1SJaegeuk Kim noffset[0] = 0; 549e05df3b1SJaegeuk Kim 550e05df3b1SJaegeuk Kim if (block < direct_index) { 55125c0a6e5SNamjae Jeon offset[n] = block; 552e05df3b1SJaegeuk Kim goto got; 553e05df3b1SJaegeuk Kim } 554e05df3b1SJaegeuk Kim block -= direct_index; 555e05df3b1SJaegeuk Kim if (block < direct_blks) { 556e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 557e05df3b1SJaegeuk Kim noffset[n] = 1; 55825c0a6e5SNamjae Jeon offset[n] = block; 559e05df3b1SJaegeuk Kim level = 1; 560e05df3b1SJaegeuk Kim goto got; 561e05df3b1SJaegeuk Kim } 562e05df3b1SJaegeuk Kim block -= direct_blks; 563e05df3b1SJaegeuk Kim if (block < direct_blks) { 564e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 565e05df3b1SJaegeuk Kim noffset[n] = 2; 56625c0a6e5SNamjae Jeon offset[n] = block; 567e05df3b1SJaegeuk Kim level = 1; 568e05df3b1SJaegeuk Kim goto got; 569e05df3b1SJaegeuk Kim } 570e05df3b1SJaegeuk Kim block -= direct_blks; 571e05df3b1SJaegeuk Kim if (block < indirect_blks) { 572e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 573e05df3b1SJaegeuk Kim noffset[n] = 3; 574e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 575e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 57625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 577e05df3b1SJaegeuk Kim level = 2; 578e05df3b1SJaegeuk Kim goto got; 579e05df3b1SJaegeuk Kim } 580e05df3b1SJaegeuk Kim block -= indirect_blks; 581e05df3b1SJaegeuk Kim if (block < indirect_blks) { 582e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 583e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 584e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 585e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 58625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 587e05df3b1SJaegeuk Kim level = 2; 588e05df3b1SJaegeuk Kim goto got; 589e05df3b1SJaegeuk Kim } 590e05df3b1SJaegeuk Kim block -= indirect_blks; 591e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 592e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 593e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 594e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 595e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 596e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 597e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 598e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 599e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 600e05df3b1SJaegeuk Kim offset[n - 1]; 60125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 602e05df3b1SJaegeuk Kim level = 3; 603e05df3b1SJaegeuk Kim goto got; 604e05df3b1SJaegeuk Kim } else { 605adb6dc19SJaegeuk Kim return -E2BIG; 606e05df3b1SJaegeuk Kim } 607e05df3b1SJaegeuk Kim got: 608e05df3b1SJaegeuk Kim return level; 609e05df3b1SJaegeuk Kim } 610e05df3b1SJaegeuk Kim 611e05df3b1SJaegeuk Kim /* 612e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 6134f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 6144f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 61539936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 616e05df3b1SJaegeuk Kim */ 6174d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 618e05df3b1SJaegeuk Kim { 6194081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 620e05df3b1SJaegeuk Kim struct page *npage[4]; 621f1a3b98eSJaegeuk Kim struct page *parent = NULL; 622e05df3b1SJaegeuk Kim int offset[4]; 623e05df3b1SJaegeuk Kim unsigned int noffset[4]; 624e05df3b1SJaegeuk Kim nid_t nids[4]; 6253cf45747SChao Yu int level, i = 0; 626e05df3b1SJaegeuk Kim int err = 0; 627e05df3b1SJaegeuk Kim 62881ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 629adb6dc19SJaegeuk Kim if (level < 0) 630adb6dc19SJaegeuk Kim return level; 631e05df3b1SJaegeuk Kim 632e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 6331646cfacSJaegeuk Kim npage[0] = dn->inode_page; 6341646cfacSJaegeuk Kim 6351646cfacSJaegeuk Kim if (!npage[0]) { 6364d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 637e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 638e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 6391646cfacSJaegeuk Kim } 640f1a3b98eSJaegeuk Kim 641f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 642f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 64376629165SJaegeuk Kim err = -ENOENT; 644f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 645f1a3b98eSJaegeuk Kim goto release_out; 646f1a3b98eSJaegeuk Kim } 647f1a3b98eSJaegeuk Kim 648e05df3b1SJaegeuk Kim parent = npage[0]; 64952c2db3fSChangman Lee if (level != 0) 650e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 651e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 652e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 653e05df3b1SJaegeuk Kim 654e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 655e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 656e05df3b1SJaegeuk Kim bool done = false; 657e05df3b1SJaegeuk Kim 658266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 659e05df3b1SJaegeuk Kim /* alloc new node */ 6604d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 661e05df3b1SJaegeuk Kim err = -ENOSPC; 662e05df3b1SJaegeuk Kim goto release_pages; 663e05df3b1SJaegeuk Kim } 664e05df3b1SJaegeuk Kim 665e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6664d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 667e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 6684d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 669e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 670e05df3b1SJaegeuk Kim goto release_pages; 671e05df3b1SJaegeuk Kim } 672e05df3b1SJaegeuk Kim 673e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 6744d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 675e05df3b1SJaegeuk Kim done = true; 676266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 6774d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 678e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 679e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 680e05df3b1SJaegeuk Kim goto release_pages; 681e05df3b1SJaegeuk Kim } 682e05df3b1SJaegeuk Kim done = true; 683e05df3b1SJaegeuk Kim } 684e05df3b1SJaegeuk Kim if (i == 1) { 685e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 686e05df3b1SJaegeuk Kim unlock_page(parent); 687e05df3b1SJaegeuk Kim } else { 688e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 689e05df3b1SJaegeuk Kim } 690e05df3b1SJaegeuk Kim 691e05df3b1SJaegeuk Kim if (!done) { 6924d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 693e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 694e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 695e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 696e05df3b1SJaegeuk Kim goto release_out; 697e05df3b1SJaegeuk Kim } 698e05df3b1SJaegeuk Kim } 699e05df3b1SJaegeuk Kim if (i < level) { 700e05df3b1SJaegeuk Kim parent = npage[i]; 701e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 702e05df3b1SJaegeuk Kim } 703e05df3b1SJaegeuk Kim } 704e05df3b1SJaegeuk Kim dn->nid = nids[level]; 705e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 706e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 7077a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 7087a2af766SChao Yu dn->node_page, dn->ofs_in_node); 709e05df3b1SJaegeuk Kim return 0; 710e05df3b1SJaegeuk Kim 711e05df3b1SJaegeuk Kim release_pages: 712e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 713e05df3b1SJaegeuk Kim if (i > 1) 714e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 715e05df3b1SJaegeuk Kim release_out: 716e05df3b1SJaegeuk Kim dn->inode_page = NULL; 717e05df3b1SJaegeuk Kim dn->node_page = NULL; 7183cf45747SChao Yu if (err == -ENOENT) { 7193cf45747SChao Yu dn->cur_level = i; 7203cf45747SChao Yu dn->max_level = level; 7210a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 7223cf45747SChao Yu } 723e05df3b1SJaegeuk Kim return err; 724e05df3b1SJaegeuk Kim } 725e05df3b1SJaegeuk Kim 7267735730dSChao Yu static int truncate_node(struct dnode_of_data *dn) 727e05df3b1SJaegeuk Kim { 7284081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 729e05df3b1SJaegeuk Kim struct node_info ni; 7307735730dSChao Yu int err; 731e05df3b1SJaegeuk Kim 7327735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &ni); 7337735730dSChao Yu if (err) 7347735730dSChao Yu return err; 735e05df3b1SJaegeuk Kim 736e05df3b1SJaegeuk Kim /* Deallocate node address */ 7374d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 738000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 739479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 740e05df3b1SJaegeuk Kim 741e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 7424d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 743e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 7440f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 745e05df3b1SJaegeuk Kim } 746000519f2SChao Yu 747e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 748caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 749e05df3b1SJaegeuk Kim 750e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 751bf39c00aSJaegeuk Kim 752bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 753bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 754bf39c00aSJaegeuk Kim 755e05df3b1SJaegeuk Kim dn->node_page = NULL; 75651dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 7577735730dSChao Yu 7587735730dSChao Yu return 0; 759e05df3b1SJaegeuk Kim } 760e05df3b1SJaegeuk Kim 761e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 762e05df3b1SJaegeuk Kim { 763e05df3b1SJaegeuk Kim struct page *page; 7647735730dSChao Yu int err; 765e05df3b1SJaegeuk Kim 766e05df3b1SJaegeuk Kim if (dn->nid == 0) 767e05df3b1SJaegeuk Kim return 1; 768e05df3b1SJaegeuk Kim 769e05df3b1SJaegeuk Kim /* get direct node */ 7704d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 771e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 772e05df3b1SJaegeuk Kim return 1; 773e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 774e05df3b1SJaegeuk Kim return PTR_ERR(page); 775e05df3b1SJaegeuk Kim 776e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 777e05df3b1SJaegeuk Kim dn->node_page = page; 778e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 7794d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 7807735730dSChao Yu err = truncate_node(dn); 7817735730dSChao Yu if (err) 7827735730dSChao Yu return err; 7837735730dSChao Yu 784e05df3b1SJaegeuk Kim return 1; 785e05df3b1SJaegeuk Kim } 786e05df3b1SJaegeuk Kim 787e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 788e05df3b1SJaegeuk Kim int ofs, int depth) 789e05df3b1SJaegeuk Kim { 790e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 791e05df3b1SJaegeuk Kim struct page *page; 792e05df3b1SJaegeuk Kim struct f2fs_node *rn; 793e05df3b1SJaegeuk Kim nid_t child_nid; 794e05df3b1SJaegeuk Kim unsigned int child_nofs; 795e05df3b1SJaegeuk Kim int freed = 0; 796e05df3b1SJaegeuk Kim int i, ret; 797e05df3b1SJaegeuk Kim 798e05df3b1SJaegeuk Kim if (dn->nid == 0) 799e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 800e05df3b1SJaegeuk Kim 80151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 80251dd6249SNamjae Jeon 8034d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 80451dd6249SNamjae Jeon if (IS_ERR(page)) { 80551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 806e05df3b1SJaegeuk Kim return PTR_ERR(page); 80751dd6249SNamjae Jeon } 808e05df3b1SJaegeuk Kim 8094d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 81079344efbSJaegeuk Kim 81145590710SGu Zheng rn = F2FS_NODE(page); 812e05df3b1SJaegeuk Kim if (depth < 3) { 813e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 814e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 815e05df3b1SJaegeuk Kim if (child_nid == 0) 816e05df3b1SJaegeuk Kim continue; 817e05df3b1SJaegeuk Kim rdn.nid = child_nid; 818e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 819e05df3b1SJaegeuk Kim if (ret < 0) 820e05df3b1SJaegeuk Kim goto out_err; 82112719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 82293bae099SJaegeuk Kim dn->node_changed = true; 823e05df3b1SJaegeuk Kim } 824e05df3b1SJaegeuk Kim } else { 825e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 826e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 827e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 828e05df3b1SJaegeuk Kim if (child_nid == 0) { 829e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 830e05df3b1SJaegeuk Kim continue; 831e05df3b1SJaegeuk Kim } 832e05df3b1SJaegeuk Kim rdn.nid = child_nid; 833e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 834e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 83512719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 83693bae099SJaegeuk Kim dn->node_changed = true; 837e05df3b1SJaegeuk Kim child_nofs += ret; 838e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 839e05df3b1SJaegeuk Kim goto out_err; 840e05df3b1SJaegeuk Kim } 841e05df3b1SJaegeuk Kim } 842e05df3b1SJaegeuk Kim freed = child_nofs; 843e05df3b1SJaegeuk Kim } 844e05df3b1SJaegeuk Kim 845e05df3b1SJaegeuk Kim if (!ofs) { 846e05df3b1SJaegeuk Kim /* remove current indirect node */ 847e05df3b1SJaegeuk Kim dn->node_page = page; 8487735730dSChao Yu ret = truncate_node(dn); 8497735730dSChao Yu if (ret) 8507735730dSChao Yu goto out_err; 851e05df3b1SJaegeuk Kim freed++; 852e05df3b1SJaegeuk Kim } else { 853e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 854e05df3b1SJaegeuk Kim } 85551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 856e05df3b1SJaegeuk Kim return freed; 857e05df3b1SJaegeuk Kim 858e05df3b1SJaegeuk Kim out_err: 859e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 86051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 861e05df3b1SJaegeuk Kim return ret; 862e05df3b1SJaegeuk Kim } 863e05df3b1SJaegeuk Kim 864e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 865e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 866e05df3b1SJaegeuk Kim { 867e05df3b1SJaegeuk Kim struct page *pages[2]; 868e05df3b1SJaegeuk Kim nid_t nid[3]; 869e05df3b1SJaegeuk Kim nid_t child_nid; 870e05df3b1SJaegeuk Kim int err = 0; 871e05df3b1SJaegeuk Kim int i; 872e05df3b1SJaegeuk Kim int idx = depth - 2; 873e05df3b1SJaegeuk Kim 874e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 875e05df3b1SJaegeuk Kim if (!nid[0]) 876e05df3b1SJaegeuk Kim return 0; 877e05df3b1SJaegeuk Kim 878e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 879a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 880e1c42045Sarter97 /* reference count'll be increased */ 8814d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 882e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 883e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 884a225dca3Sshifei10.ge idx = i - 1; 885e05df3b1SJaegeuk Kim goto fail; 886e05df3b1SJaegeuk Kim } 887e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 888e05df3b1SJaegeuk Kim } 889e05df3b1SJaegeuk Kim 8904d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 89179344efbSJaegeuk Kim 892e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 893a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 894e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 895e05df3b1SJaegeuk Kim if (!child_nid) 896e05df3b1SJaegeuk Kim continue; 897e05df3b1SJaegeuk Kim dn->nid = child_nid; 898e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 899e05df3b1SJaegeuk Kim if (err < 0) 900e05df3b1SJaegeuk Kim goto fail; 90112719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 90293bae099SJaegeuk Kim dn->node_changed = true; 903e05df3b1SJaegeuk Kim } 904e05df3b1SJaegeuk Kim 905a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 906e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 907e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 9087735730dSChao Yu err = truncate_node(dn); 9097735730dSChao Yu if (err) 9107735730dSChao Yu goto fail; 911e05df3b1SJaegeuk Kim } else { 912e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 913e05df3b1SJaegeuk Kim } 914e05df3b1SJaegeuk Kim offset[idx]++; 915a225dca3Sshifei10.ge offset[idx + 1] = 0; 916a225dca3Sshifei10.ge idx--; 917e05df3b1SJaegeuk Kim fail: 918a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 919e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 92051dd6249SNamjae Jeon 92151dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 92251dd6249SNamjae Jeon 923e05df3b1SJaegeuk Kim return err; 924e05df3b1SJaegeuk Kim } 925e05df3b1SJaegeuk Kim 9260a8165d7SJaegeuk Kim /* 927e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 928e05df3b1SJaegeuk Kim */ 9294d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 930e05df3b1SJaegeuk Kim { 9314081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 932e05df3b1SJaegeuk Kim int err = 0, cont = 1; 933e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 9347dd690c8SJaegeuk Kim unsigned int nofs = 0; 93558bfaf44SJaegeuk Kim struct f2fs_inode *ri; 936e05df3b1SJaegeuk Kim struct dnode_of_data dn; 937e05df3b1SJaegeuk Kim struct page *page; 938e05df3b1SJaegeuk Kim 93951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 94051dd6249SNamjae Jeon 94181ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 942adb6dc19SJaegeuk Kim if (level < 0) 943adb6dc19SJaegeuk Kim return level; 944ff373558SJaegeuk Kim 9454d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 94651dd6249SNamjae Jeon if (IS_ERR(page)) { 94751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 948e05df3b1SJaegeuk Kim return PTR_ERR(page); 94951dd6249SNamjae Jeon } 950e05df3b1SJaegeuk Kim 951e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 952e05df3b1SJaegeuk Kim unlock_page(page); 953e05df3b1SJaegeuk Kim 95458bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 955e05df3b1SJaegeuk Kim switch (level) { 956e05df3b1SJaegeuk Kim case 0: 957e05df3b1SJaegeuk Kim case 1: 958e05df3b1SJaegeuk Kim nofs = noffset[1]; 959e05df3b1SJaegeuk Kim break; 960e05df3b1SJaegeuk Kim case 2: 961e05df3b1SJaegeuk Kim nofs = noffset[1]; 962e05df3b1SJaegeuk Kim if (!offset[level - 1]) 963e05df3b1SJaegeuk Kim goto skip_partial; 96458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 965e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 966e05df3b1SJaegeuk Kim goto fail; 967e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 968e05df3b1SJaegeuk Kim break; 969e05df3b1SJaegeuk Kim case 3: 970e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 971e05df3b1SJaegeuk Kim if (!offset[level - 1]) 972e05df3b1SJaegeuk Kim goto skip_partial; 97358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 974e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 975e05df3b1SJaegeuk Kim goto fail; 976e05df3b1SJaegeuk Kim break; 977e05df3b1SJaegeuk Kim default: 978e05df3b1SJaegeuk Kim BUG(); 979e05df3b1SJaegeuk Kim } 980e05df3b1SJaegeuk Kim 981e05df3b1SJaegeuk Kim skip_partial: 982e05df3b1SJaegeuk Kim while (cont) { 98358bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 984e05df3b1SJaegeuk Kim switch (offset[0]) { 985e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 986e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 987e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 988e05df3b1SJaegeuk Kim break; 989e05df3b1SJaegeuk Kim 990e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 991e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 992e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 993e05df3b1SJaegeuk Kim break; 994e05df3b1SJaegeuk Kim 995e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 996e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 997e05df3b1SJaegeuk Kim cont = 0; 998e05df3b1SJaegeuk Kim break; 999e05df3b1SJaegeuk Kim 1000e05df3b1SJaegeuk Kim default: 1001e05df3b1SJaegeuk Kim BUG(); 1002e05df3b1SJaegeuk Kim } 1003e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 1004e05df3b1SJaegeuk Kim goto fail; 1005e05df3b1SJaegeuk Kim if (offset[1] == 0 && 100658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 1007e05df3b1SJaegeuk Kim lock_page(page); 1008ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 1009fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 101058bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 1011e05df3b1SJaegeuk Kim set_page_dirty(page); 1012e05df3b1SJaegeuk Kim unlock_page(page); 1013e05df3b1SJaegeuk Kim } 1014e05df3b1SJaegeuk Kim offset[1] = 0; 1015e05df3b1SJaegeuk Kim offset[0]++; 1016e05df3b1SJaegeuk Kim nofs += err; 1017e05df3b1SJaegeuk Kim } 1018e05df3b1SJaegeuk Kim fail: 1019e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 102051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1021e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1022e05df3b1SJaegeuk Kim } 1023e05df3b1SJaegeuk Kim 10249c77f754SJaegeuk Kim /* caller must lock inode page */ 10254d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 10264f16fb0fSJaegeuk Kim { 10274081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 10284f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 10294f16fb0fSJaegeuk Kim struct dnode_of_data dn; 10304f16fb0fSJaegeuk Kim struct page *npage; 10317735730dSChao Yu int err; 10324f16fb0fSJaegeuk Kim 10334f16fb0fSJaegeuk Kim if (!nid) 10344f16fb0fSJaegeuk Kim return 0; 10354f16fb0fSJaegeuk Kim 10364d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 10374f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 10384f16fb0fSJaegeuk Kim return PTR_ERR(npage); 10394f16fb0fSJaegeuk Kim 10407735730dSChao Yu set_new_dnode(&dn, inode, NULL, npage, nid); 10417735730dSChao Yu err = truncate_node(&dn); 10427735730dSChao Yu if (err) { 10437735730dSChao Yu f2fs_put_page(npage, 1); 10447735730dSChao Yu return err; 10457735730dSChao Yu } 10467735730dSChao Yu 1047205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 104865985d93SJaegeuk Kim 10494f16fb0fSJaegeuk Kim return 0; 10504f16fb0fSJaegeuk Kim } 10514f16fb0fSJaegeuk Kim 105239936837SJaegeuk Kim /* 10534f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 10544f4124d0SChao Yu * f2fs_unlock_op(). 105539936837SJaegeuk Kim */ 10564d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1057e05df3b1SJaegeuk Kim { 1058e05df3b1SJaegeuk Kim struct dnode_of_data dn; 105913ec7297SChao Yu int err; 1060e05df3b1SJaegeuk Kim 1061c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 10624d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 106313ec7297SChao Yu if (err) 106413ec7297SChao Yu return err; 1065e05df3b1SJaegeuk Kim 10664d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 106713ec7297SChao Yu if (err) { 1068c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 106913ec7297SChao Yu return err; 1070e05df3b1SJaegeuk Kim } 1071c2e69583SJaegeuk Kim 1072c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1073c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1074c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 10754d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1076c2e69583SJaegeuk Kim 1077e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10789850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10790eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1080c2e69583SJaegeuk Kim 1081c2e69583SJaegeuk Kim /* will put inode & node pages */ 10827735730dSChao Yu err = truncate_node(&dn); 10837735730dSChao Yu if (err) { 10847735730dSChao Yu f2fs_put_dnode(&dn); 10857735730dSChao Yu return err; 10867735730dSChao Yu } 108713ec7297SChao Yu return 0; 1088e05df3b1SJaegeuk Kim } 1089e05df3b1SJaegeuk Kim 10904d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1091e05df3b1SJaegeuk Kim { 1092e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1093e05df3b1SJaegeuk Kim 1094e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1095e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 109644a83ff6SJaegeuk Kim 109744a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10984d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1099e05df3b1SJaegeuk Kim } 1100e05df3b1SJaegeuk Kim 11014d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1102e05df3b1SJaegeuk Kim { 11034081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 110425cc5d3bSJaegeuk Kim struct node_info new_ni; 1105e05df3b1SJaegeuk Kim struct page *page; 1106e05df3b1SJaegeuk Kim int err; 1107e05df3b1SJaegeuk Kim 110891942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1109e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1110e05df3b1SJaegeuk Kim 1111300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1112e05df3b1SJaegeuk Kim if (!page) 1113e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1114e05df3b1SJaegeuk Kim 11150abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 11169c02740cSJaegeuk Kim goto fail; 11170abd675eSChao Yu 111825cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 11197735730dSChao Yu err = f2fs_get_node_info(sbi, dn->nid, &new_ni); 11207735730dSChao Yu if (err) { 11217735730dSChao Yu dec_valid_node_count(sbi, dn->inode, !ofs); 11227735730dSChao Yu goto fail; 11237735730dSChao Yu } 112425cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 112525cc5d3bSJaegeuk Kim #endif 112625cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1127e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 112825cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 112925cc5d3bSJaegeuk Kim new_ni.flag = 0; 113025cc5d3bSJaegeuk Kim new_ni.version = 0; 1131479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 11329c02740cSJaegeuk Kim 1133fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 11349c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1135c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1136237c0790SJaegeuk Kim if (!PageUptodate(page)) 11379c02740cSJaegeuk Kim SetPageUptodate(page); 113812719ae1SJaegeuk Kim if (set_page_dirty(page)) 113912719ae1SJaegeuk Kim dn->node_changed = true; 1140e05df3b1SJaegeuk Kim 11414bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1142205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1143479bd73aSJaegeuk Kim 1144e05df3b1SJaegeuk Kim if (ofs == 0) 1145e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1146e05df3b1SJaegeuk Kim return page; 1147e05df3b1SJaegeuk Kim 1148e05df3b1SJaegeuk Kim fail: 114971e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1150e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1151e05df3b1SJaegeuk Kim return ERR_PTR(err); 1152e05df3b1SJaegeuk Kim } 1153e05df3b1SJaegeuk Kim 115456ae674cSJaegeuk Kim /* 115556ae674cSJaegeuk Kim * Caller should do after getting the following values. 115656ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 115786531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 115856ae674cSJaegeuk Kim */ 115904d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1160e05df3b1SJaegeuk Kim { 11614081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1162e05df3b1SJaegeuk Kim struct node_info ni; 1163cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 116405ca3632SJaegeuk Kim .sbi = sbi, 1165cf04e8ebSJaegeuk Kim .type = NODE, 116604d328deSMike Christie .op = REQ_OP_READ, 116704d328deSMike Christie .op_flags = op_flags, 116805ca3632SJaegeuk Kim .page = page, 11694375a336SJaegeuk Kim .encrypted_page = NULL, 1170cf04e8ebSJaegeuk Kim }; 11717735730dSChao Yu int err; 1172e05df3b1SJaegeuk Kim 117354c55c4eSWeichao Guo if (PageUptodate(page)) { 117454c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 117554c55c4eSWeichao Guo f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page)); 117654c55c4eSWeichao Guo #endif 11773bdad3c7SJaegeuk Kim return LOCKED_PAGE; 117854c55c4eSWeichao Guo } 11793bdad3c7SJaegeuk Kim 11807735730dSChao Yu err = f2fs_get_node_info(sbi, page->index, &ni); 11817735730dSChao Yu if (err) 11827735730dSChao Yu return err; 1183e05df3b1SJaegeuk Kim 118483a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 118583a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 11862bca1e23SJaegeuk Kim ClearPageUptodate(page); 1187e05df3b1SJaegeuk Kim return -ENOENT; 1188393ff91fSJaegeuk Kim } 1189393ff91fSJaegeuk Kim 11907a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 119105ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1192e05df3b1SJaegeuk Kim } 1193e05df3b1SJaegeuk Kim 11940a8165d7SJaegeuk Kim /* 1195e05df3b1SJaegeuk Kim * Readahead a node page 1196e05df3b1SJaegeuk Kim */ 11974d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1198e05df3b1SJaegeuk Kim { 1199e05df3b1SJaegeuk Kim struct page *apage; 120056ae674cSJaegeuk Kim int err; 1201e05df3b1SJaegeuk Kim 1202e8458725SChao Yu if (!nid) 1203e8458725SChao Yu return; 12044d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1205a4f843bdSJaegeuk Kim return; 1206e8458725SChao Yu 1207999270deSFan Li rcu_read_lock(); 1208b93b0163SMatthew Wilcox apage = radix_tree_lookup(&NODE_MAPPING(sbi)->i_pages, nid); 1209999270deSFan Li rcu_read_unlock(); 1210999270deSFan Li if (apage) 1211393ff91fSJaegeuk Kim return; 1212e05df3b1SJaegeuk Kim 1213300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1214e05df3b1SJaegeuk Kim if (!apage) 1215e05df3b1SJaegeuk Kim return; 1216e05df3b1SJaegeuk Kim 121770246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 121886531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1219e05df3b1SJaegeuk Kim } 1220e05df3b1SJaegeuk Kim 122117a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 12220e022ea8SChao Yu struct page *parent, int start) 1223e05df3b1SJaegeuk Kim { 122456ae674cSJaegeuk Kim struct page *page; 122556ae674cSJaegeuk Kim int err; 12264aa69d56SJaegeuk Kim 12274aa69d56SJaegeuk Kim if (!nid) 12284aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 12294d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1230a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1231afcb7ca0SJaegeuk Kim repeat: 1232300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1233e05df3b1SJaegeuk Kim if (!page) 1234e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1235e05df3b1SJaegeuk Kim 123670fd7614SChristoph Hellwig err = read_node_page(page, 0); 123786531d6bSJaegeuk Kim if (err < 0) { 123886531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1239e05df3b1SJaegeuk Kim return ERR_PTR(err); 1240e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 12411f258ec1SChao Yu err = 0; 1242e1c51b9fSChao Yu goto page_hit; 124386531d6bSJaegeuk Kim } 1244aaf96075SJaegeuk Kim 12450e022ea8SChao Yu if (parent) 12464d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 12470e022ea8SChao Yu 1248e1c51b9fSChao Yu lock_page(page); 1249e1c51b9fSChao Yu 12504ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1251afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1252afcb7ca0SJaegeuk Kim goto repeat; 1253afcb7ca0SJaegeuk Kim } 12541563ac75SChao Yu 12551f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 12561f258ec1SChao Yu err = -EIO; 12571563ac75SChao Yu goto out_err; 12581f258ec1SChao Yu } 1259704956ecSChao Yu 1260704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1261704956ecSChao Yu err = -EBADMSG; 1262704956ecSChao Yu goto out_err; 1263704956ecSChao Yu } 1264e1c51b9fSChao Yu page_hit: 12650c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 12661f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 12671f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 12681f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 12691f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 12701f258ec1SChao Yu next_blkaddr_of_node(page)); 12711f258ec1SChao Yu err = -EINVAL; 12720c9df7fbSYunlong Song out_err: 1273ee605234SJaegeuk Kim ClearPageUptodate(page); 12740c9df7fbSYunlong Song f2fs_put_page(page, 1); 12751f258ec1SChao Yu return ERR_PTR(err); 12760c9df7fbSYunlong Song } 1277e05df3b1SJaegeuk Kim return page; 1278e05df3b1SJaegeuk Kim } 1279e05df3b1SJaegeuk Kim 12804d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 12810e022ea8SChao Yu { 12820e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 12830e022ea8SChao Yu } 12840e022ea8SChao Yu 12854d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1286e05df3b1SJaegeuk Kim { 12874081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 12880e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1289e05df3b1SJaegeuk Kim 12900e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1291e05df3b1SJaegeuk Kim } 1292e05df3b1SJaegeuk Kim 12932049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 12942049d4fcSJaegeuk Kim { 12952049d4fcSJaegeuk Kim struct inode *inode; 12962049d4fcSJaegeuk Kim struct page *page; 12970f3311a8SChao Yu int ret; 12982049d4fcSJaegeuk Kim 12992049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 13002049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 13012049d4fcSJaegeuk Kim if (!inode) 13022049d4fcSJaegeuk Kim return; 13032049d4fcSJaegeuk Kim 130401eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 130501eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 13062049d4fcSJaegeuk Kim if (!page) 13072049d4fcSJaegeuk Kim goto iput_out; 13082049d4fcSJaegeuk Kim 13092049d4fcSJaegeuk Kim if (!PageUptodate(page)) 13102049d4fcSJaegeuk Kim goto page_out; 13112049d4fcSJaegeuk Kim 13122049d4fcSJaegeuk Kim if (!PageDirty(page)) 13132049d4fcSJaegeuk Kim goto page_out; 13142049d4fcSJaegeuk Kim 13152049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 13162049d4fcSJaegeuk Kim goto page_out; 13172049d4fcSJaegeuk Kim 13180f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 13192049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 13204d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 13210f3311a8SChao Yu if (ret) 13222049d4fcSJaegeuk Kim set_page_dirty(page); 13232049d4fcSJaegeuk Kim page_out: 13244a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 13252049d4fcSJaegeuk Kim iput_out: 13262049d4fcSJaegeuk Kim iput(inode); 13272049d4fcSJaegeuk Kim } 13282049d4fcSJaegeuk Kim 1329608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1330e05df3b1SJaegeuk Kim { 1331028a63a6SJan Kara pgoff_t index; 1332e05df3b1SJaegeuk Kim struct pagevec pvec; 1333608514deSJaegeuk Kim struct page *last_page = NULL; 1334028a63a6SJan Kara int nr_pages; 133552681375SJaegeuk Kim 133686679820SMel Gorman pagevec_init(&pvec); 133752681375SJaegeuk Kim index = 0; 133852681375SJaegeuk Kim 1339028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 134067fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1341028a63a6SJan Kara int i; 134252681375SJaegeuk Kim 134352681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 134452681375SJaegeuk Kim struct page *page = pvec.pages[i]; 134552681375SJaegeuk Kim 134652681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1347608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 134852681375SJaegeuk Kim pagevec_release(&pvec); 1349608514deSJaegeuk Kim return ERR_PTR(-EIO); 135052681375SJaegeuk Kim } 135152681375SJaegeuk Kim 135252681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 135352681375SJaegeuk Kim continue; 135452681375SJaegeuk Kim if (ino_of_node(page) != ino) 135552681375SJaegeuk Kim continue; 135652681375SJaegeuk Kim 135752681375SJaegeuk Kim lock_page(page); 135852681375SJaegeuk Kim 135952681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 136052681375SJaegeuk Kim continue_unlock: 136152681375SJaegeuk Kim unlock_page(page); 136252681375SJaegeuk Kim continue; 136352681375SJaegeuk Kim } 136452681375SJaegeuk Kim if (ino_of_node(page) != ino) 136552681375SJaegeuk Kim goto continue_unlock; 136652681375SJaegeuk Kim 136752681375SJaegeuk Kim if (!PageDirty(page)) { 136852681375SJaegeuk Kim /* someone wrote it for us */ 136952681375SJaegeuk Kim goto continue_unlock; 137052681375SJaegeuk Kim } 137152681375SJaegeuk Kim 1372608514deSJaegeuk Kim if (last_page) 1373608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1374608514deSJaegeuk Kim 1375608514deSJaegeuk Kim get_page(page); 1376608514deSJaegeuk Kim last_page = page; 1377608514deSJaegeuk Kim unlock_page(page); 1378608514deSJaegeuk Kim } 1379608514deSJaegeuk Kim pagevec_release(&pvec); 1380608514deSJaegeuk Kim cond_resched(); 1381608514deSJaegeuk Kim } 1382608514deSJaegeuk Kim return last_page; 1383608514deSJaegeuk Kim } 1384608514deSJaegeuk Kim 1385d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1386b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 1387b0af6d49SChao Yu enum iostat_type io_type) 1388faa24895SJaegeuk Kim { 1389faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1390faa24895SJaegeuk Kim nid_t nid; 1391faa24895SJaegeuk Kim struct node_info ni; 1392faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1393faa24895SJaegeuk Kim .sbi = sbi, 139439d787beSChao Yu .ino = ino_of_node(page), 1395faa24895SJaegeuk Kim .type = NODE, 1396faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1397faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1398faa24895SJaegeuk Kim .page = page, 1399faa24895SJaegeuk Kim .encrypted_page = NULL, 1400d68f735bSJaegeuk Kim .submitted = false, 1401b0af6d49SChao Yu .io_type = io_type, 1402578c6478SYufen Yu .io_wbc = wbc, 1403faa24895SJaegeuk Kim }; 1404faa24895SJaegeuk Kim 1405faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1406faa24895SJaegeuk Kim 1407868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1408868de613SJaegeuk Kim goto redirty_out; 1409db198ae0SChao Yu 1410faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1411faa24895SJaegeuk Kim goto redirty_out; 1412faa24895SJaegeuk Kim 1413faa24895SJaegeuk Kim /* get old block addr of this node page */ 1414faa24895SJaegeuk Kim nid = nid_of_node(page); 1415faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1416faa24895SJaegeuk Kim 14177735730dSChao Yu if (f2fs_get_node_info(sbi, nid, &ni)) 14187735730dSChao Yu goto redirty_out; 14197735730dSChao Yu 1420faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1421faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1422faa24895SJaegeuk Kim goto redirty_out; 1423faa24895SJaegeuk Kim } else { 1424faa24895SJaegeuk Kim down_read(&sbi->node_write); 1425faa24895SJaegeuk Kim } 1426faa24895SJaegeuk Kim 1427faa24895SJaegeuk Kim /* This page is already truncated */ 1428faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1429faa24895SJaegeuk Kim ClearPageUptodate(page); 1430faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1431faa24895SJaegeuk Kim up_read(&sbi->node_write); 1432faa24895SJaegeuk Kim unlock_page(page); 1433faa24895SJaegeuk Kim return 0; 1434faa24895SJaegeuk Kim } 1435faa24895SJaegeuk Kim 1436c9b60788SChao Yu if (__is_valid_data_blkaddr(ni.blk_addr) && 1437c9b60788SChao Yu !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC)) 1438c9b60788SChao Yu goto redirty_out; 1439c9b60788SChao Yu 1440e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1441e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1442e7c75ab0SJaegeuk Kim 1443faa24895SJaegeuk Kim set_page_writeback(page); 144417c50035SJaegeuk Kim ClearPageError(page); 1445faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 14464d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1447faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1448faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1449faa24895SJaegeuk Kim up_read(&sbi->node_write); 1450faa24895SJaegeuk Kim 1451d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1452b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1453b9109b0eSJaegeuk Kim page->index, NODE); 1454d68f735bSJaegeuk Kim submitted = NULL; 1455d68f735bSJaegeuk Kim } 1456faa24895SJaegeuk Kim 1457faa24895SJaegeuk Kim unlock_page(page); 1458faa24895SJaegeuk Kim 1459d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1460b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1461d68f735bSJaegeuk Kim submitted = NULL; 1462d68f735bSJaegeuk Kim } 1463d68f735bSJaegeuk Kim if (submitted) 1464d68f735bSJaegeuk Kim *submitted = fio.submitted; 1465faa24895SJaegeuk Kim 1466401db79fSYunlong Song if (do_balance) 1467401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1468faa24895SJaegeuk Kim return 0; 1469faa24895SJaegeuk Kim 1470faa24895SJaegeuk Kim redirty_out: 1471faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1472faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1473faa24895SJaegeuk Kim } 1474faa24895SJaegeuk Kim 14754d57b86dSChao Yu void f2fs_move_node_page(struct page *node_page, int gc_type) 1476f15194fcSYunlei He { 1477f15194fcSYunlei He if (gc_type == FG_GC) { 1478f15194fcSYunlei He struct writeback_control wbc = { 1479f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1480f15194fcSYunlei He .nr_to_write = 1, 1481f15194fcSYunlei He .for_reclaim = 0, 1482f15194fcSYunlei He }; 1483f15194fcSYunlei He 1484f15194fcSYunlei He set_page_dirty(node_page); 1485f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1486f15194fcSYunlei He 1487f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1488f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1489f15194fcSYunlei He goto out_page; 1490f15194fcSYunlei He 1491f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 1492f15194fcSYunlei He &wbc, false, FS_GC_NODE_IO)) 1493f15194fcSYunlei He unlock_page(node_page); 1494f15194fcSYunlei He goto release_page; 1495f15194fcSYunlei He } else { 1496f15194fcSYunlei He /* set page dirty and write it */ 1497f15194fcSYunlei He if (!PageWriteback(node_page)) 1498f15194fcSYunlei He set_page_dirty(node_page); 1499f15194fcSYunlei He } 1500f15194fcSYunlei He out_page: 1501f15194fcSYunlei He unlock_page(node_page); 1502f15194fcSYunlei He release_page: 1503f15194fcSYunlei He f2fs_put_page(node_page, 0); 1504f15194fcSYunlei He } 1505f15194fcSYunlei He 1506faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1507faa24895SJaegeuk Kim struct writeback_control *wbc) 1508faa24895SJaegeuk Kim { 1509b0af6d49SChao Yu return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); 1510faa24895SJaegeuk Kim } 1511faa24895SJaegeuk Kim 15124d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1513608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1514608514deSJaegeuk Kim { 1515028a63a6SJan Kara pgoff_t index; 1516942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1517608514deSJaegeuk Kim struct pagevec pvec; 1518608514deSJaegeuk Kim int ret = 0; 1519608514deSJaegeuk Kim struct page *last_page = NULL; 1520608514deSJaegeuk Kim bool marked = false; 152126de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1522028a63a6SJan Kara int nr_pages; 1523608514deSJaegeuk Kim 1524608514deSJaegeuk Kim if (atomic) { 1525608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1526608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1527608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1528608514deSJaegeuk Kim } 1529608514deSJaegeuk Kim retry: 153086679820SMel Gorman pagevec_init(&pvec); 1531608514deSJaegeuk Kim index = 0; 1532608514deSJaegeuk Kim 1533028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 153467fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1535028a63a6SJan Kara int i; 1536608514deSJaegeuk Kim 1537608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1538608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1539d68f735bSJaegeuk Kim bool submitted = false; 1540608514deSJaegeuk Kim 1541608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1542608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1543608514deSJaegeuk Kim pagevec_release(&pvec); 15449de69279SChao Yu ret = -EIO; 15459de69279SChao Yu goto out; 1546608514deSJaegeuk Kim } 1547608514deSJaegeuk Kim 1548608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1549608514deSJaegeuk Kim continue; 1550608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1551608514deSJaegeuk Kim continue; 1552608514deSJaegeuk Kim 1553608514deSJaegeuk Kim lock_page(page); 1554608514deSJaegeuk Kim 1555608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1556608514deSJaegeuk Kim continue_unlock: 1557608514deSJaegeuk Kim unlock_page(page); 1558608514deSJaegeuk Kim continue; 1559608514deSJaegeuk Kim } 1560608514deSJaegeuk Kim if (ino_of_node(page) != ino) 156152681375SJaegeuk Kim goto continue_unlock; 156252681375SJaegeuk Kim 1563608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1564608514deSJaegeuk Kim /* someone wrote it for us */ 1565608514deSJaegeuk Kim goto continue_unlock; 1566608514deSJaegeuk Kim } 1567608514deSJaegeuk Kim 1568608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1569608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1570608514deSJaegeuk Kim 1571d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1572d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1573d29fd172SJaegeuk Kim 1574608514deSJaegeuk Kim if (!atomic || page == last_page) { 157552681375SJaegeuk Kim set_fsync_mark(page, 1); 157626de9b11SJaegeuk Kim if (IS_INODE(page)) { 157726de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 157826de9b11SJaegeuk Kim FI_DIRTY_INODE)) 15794d57b86dSChao Yu f2fs_update_inode(inode, page); 158052681375SJaegeuk Kim set_dentry_mark(page, 15814d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 158226de9b11SJaegeuk Kim } 1583608514deSJaegeuk Kim /* may be written by other thread */ 1584608514deSJaegeuk Kim if (!PageDirty(page)) 1585608514deSJaegeuk Kim set_page_dirty(page); 1586608514deSJaegeuk Kim } 1587608514deSJaegeuk Kim 1588608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1589608514deSJaegeuk Kim goto continue_unlock; 159052681375SJaegeuk Kim 1591e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1592d68f735bSJaegeuk Kim page == last_page, 1593b0af6d49SChao Yu &submitted, wbc, true, 1594b0af6d49SChao Yu FS_NODE_IO); 1595c267ec15SJaegeuk Kim if (ret) { 159652681375SJaegeuk Kim unlock_page(page); 1597608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1598608514deSJaegeuk Kim break; 1599d68f735bSJaegeuk Kim } else if (submitted) { 1600942fd319SJaegeuk Kim last_idx = page->index; 1601608514deSJaegeuk Kim } 16023f5f4959SChao Yu 1603608514deSJaegeuk Kim if (page == last_page) { 1604608514deSJaegeuk Kim f2fs_put_page(page, 0); 1605608514deSJaegeuk Kim marked = true; 160652681375SJaegeuk Kim break; 160752681375SJaegeuk Kim } 1608c267ec15SJaegeuk Kim } 160952681375SJaegeuk Kim pagevec_release(&pvec); 161052681375SJaegeuk Kim cond_resched(); 161152681375SJaegeuk Kim 1612608514deSJaegeuk Kim if (ret || marked) 161352681375SJaegeuk Kim break; 161452681375SJaegeuk Kim } 1615608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1616608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1617608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1618608514deSJaegeuk Kim ino, last_page->index); 1619608514deSJaegeuk Kim lock_page(last_page); 1620d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1621608514deSJaegeuk Kim set_page_dirty(last_page); 1622608514deSJaegeuk Kim unlock_page(last_page); 1623608514deSJaegeuk Kim goto retry; 1624608514deSJaegeuk Kim } 16259de69279SChao Yu out: 1626942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1627b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1628c267ec15SJaegeuk Kim return ret ? -EIO: 0; 162952681375SJaegeuk Kim } 163052681375SJaegeuk Kim 16314d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 16324d57b86dSChao Yu struct writeback_control *wbc, 1633b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 163452681375SJaegeuk Kim { 1635028a63a6SJan Kara pgoff_t index; 163652681375SJaegeuk Kim struct pagevec pvec; 163752681375SJaegeuk Kim int step = 0; 163812bb0a8fSJaegeuk Kim int nwritten = 0; 16393f5f4959SChao Yu int ret = 0; 1640c29fd0c0SChao Yu int nr_pages, done = 0; 1641e05df3b1SJaegeuk Kim 164286679820SMel Gorman pagevec_init(&pvec); 1643e05df3b1SJaegeuk Kim 1644e05df3b1SJaegeuk Kim next_step: 1645e05df3b1SJaegeuk Kim index = 0; 1646e05df3b1SJaegeuk Kim 1647c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1648c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1649028a63a6SJan Kara int i; 1650e05df3b1SJaegeuk Kim 1651e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1652e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1653d68f735bSJaegeuk Kim bool submitted = false; 1654e05df3b1SJaegeuk Kim 1655c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1656c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1657c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1658c29fd0c0SChao Yu done = 1; 1659c29fd0c0SChao Yu break; 1660c29fd0c0SChao Yu } 1661c29fd0c0SChao Yu 1662e05df3b1SJaegeuk Kim /* 1663e05df3b1SJaegeuk Kim * flushing sequence with step: 1664e05df3b1SJaegeuk Kim * 0. indirect nodes 1665e05df3b1SJaegeuk Kim * 1. dentry dnodes 1666e05df3b1SJaegeuk Kim * 2. file dnodes 1667e05df3b1SJaegeuk Kim */ 1668e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1669e05df3b1SJaegeuk Kim continue; 1670e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1671e05df3b1SJaegeuk Kim is_cold_node(page))) 1672e05df3b1SJaegeuk Kim continue; 1673e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1674e05df3b1SJaegeuk Kim !is_cold_node(page))) 1675e05df3b1SJaegeuk Kim continue; 16769a4cbc9eSChao Yu lock_node: 16774b270a8cSChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 16784b270a8cSChao Yu lock_page(page); 16794b270a8cSChao Yu else if (!trylock_page(page)) 1680e05df3b1SJaegeuk Kim continue; 1681e05df3b1SJaegeuk Kim 16824ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1683e05df3b1SJaegeuk Kim continue_unlock: 1684e05df3b1SJaegeuk Kim unlock_page(page); 1685e05df3b1SJaegeuk Kim continue; 1686e05df3b1SJaegeuk Kim } 1687e05df3b1SJaegeuk Kim 1688e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1689e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1690e05df3b1SJaegeuk Kim goto continue_unlock; 1691e05df3b1SJaegeuk Kim } 1692e05df3b1SJaegeuk Kim 16932049d4fcSJaegeuk Kim /* flush inline_data */ 169452681375SJaegeuk Kim if (is_inline_node(page)) { 16952049d4fcSJaegeuk Kim clear_inline_node(page); 16962049d4fcSJaegeuk Kim unlock_page(page); 16972049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 16989a4cbc9eSChao Yu goto lock_node; 16992049d4fcSJaegeuk Kim } 17002049d4fcSJaegeuk Kim 1701fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1702fa3d2bdfSJaegeuk Kim 1703fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1704e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1705e05df3b1SJaegeuk Kim goto continue_unlock; 1706e05df3b1SJaegeuk Kim 1707e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1708e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 170952746519SJaegeuk Kim 1710401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 1711b0af6d49SChao Yu wbc, do_balance, io_type); 1712d68f735bSJaegeuk Kim if (ret) 171352746519SJaegeuk Kim unlock_page(page); 1714d68f735bSJaegeuk Kim else if (submitted) 17153f5f4959SChao Yu nwritten++; 1716e05df3b1SJaegeuk Kim 1717e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1718e05df3b1SJaegeuk Kim break; 1719e05df3b1SJaegeuk Kim } 1720e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1721e05df3b1SJaegeuk Kim cond_resched(); 1722e05df3b1SJaegeuk Kim 1723e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1724e05df3b1SJaegeuk Kim step = 2; 1725e05df3b1SJaegeuk Kim break; 1726e05df3b1SJaegeuk Kim } 1727e05df3b1SJaegeuk Kim } 1728e05df3b1SJaegeuk Kim 1729e05df3b1SJaegeuk Kim if (step < 2) { 1730e05df3b1SJaegeuk Kim step++; 1731e05df3b1SJaegeuk Kim goto next_step; 1732e05df3b1SJaegeuk Kim } 1733db198ae0SChao Yu 17343f5f4959SChao Yu if (nwritten) 1735b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1736db198ae0SChao Yu 1737db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1738db198ae0SChao Yu return -EIO; 17393f5f4959SChao Yu return ret; 1740e05df3b1SJaegeuk Kim } 1741e05df3b1SJaegeuk Kim 17424d57b86dSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1743cfe58f9dSJaegeuk Kim { 1744028a63a6SJan Kara pgoff_t index = 0; 1745cfe58f9dSJaegeuk Kim struct pagevec pvec; 1746280db3c8SMiklos Szeredi int ret2, ret = 0; 1747028a63a6SJan Kara int nr_pages; 1748cfe58f9dSJaegeuk Kim 174986679820SMel Gorman pagevec_init(&pvec); 17504ef51a8fSJaegeuk Kim 1751028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 175267fd707fSJan Kara PAGECACHE_TAG_WRITEBACK))) { 1753028a63a6SJan Kara int i; 1754cfe58f9dSJaegeuk Kim 1755cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1756cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1757cfe58f9dSJaegeuk Kim 17584bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1759fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1760cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1761cfe58f9dSJaegeuk Kim ret = -EIO; 1762cfe58f9dSJaegeuk Kim } 17634bf08ff6SChao Yu } 1764cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1765cfe58f9dSJaegeuk Kim cond_resched(); 1766cfe58f9dSJaegeuk Kim } 1767cfe58f9dSJaegeuk Kim 1768280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1769cfe58f9dSJaegeuk Kim if (!ret) 1770cfe58f9dSJaegeuk Kim ret = ret2; 1771cfe58f9dSJaegeuk Kim return ret; 1772cfe58f9dSJaegeuk Kim } 1773cfe58f9dSJaegeuk Kim 1774e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1775e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1776e05df3b1SJaegeuk Kim { 17774081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 17789dfa1bafSJaegeuk Kim struct blk_plug plug; 177950c8cdb3SJaegeuk Kim long diff; 1780e05df3b1SJaegeuk Kim 17810771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 17820771fcc7SChao Yu goto skip_write; 17830771fcc7SChao Yu 17844660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 17854660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1786e05df3b1SJaegeuk Kim 1787a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 178887d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1789d3baf95dSJaegeuk Kim goto skip_write; 1790a7fdffbdSJaegeuk Kim 1791c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1792c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1793c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1794c29fd0c0SChao Yu goto skip_write; 1795c29fd0c0SChao Yu 1796d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1797d31c7c3fSYunlei He 179850c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 17999dfa1bafSJaegeuk Kim blk_start_plug(&plug); 18004d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 18019dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 180250c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1803c29fd0c0SChao Yu 1804c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1805c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 1806e05df3b1SJaegeuk Kim return 0; 1807d3baf95dSJaegeuk Kim 1808d3baf95dSJaegeuk Kim skip_write: 1809d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1810d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1811d3baf95dSJaegeuk Kim return 0; 1812e05df3b1SJaegeuk Kim } 1813e05df3b1SJaegeuk Kim 1814e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1815e05df3b1SJaegeuk Kim { 181626c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 181726c6b887SJaegeuk Kim 1818237c0790SJaegeuk Kim if (!PageUptodate(page)) 1819e05df3b1SJaegeuk Kim SetPageUptodate(page); 182054c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 182154c55c4eSWeichao Guo if (IS_INODE(page)) 182254c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 182354c55c4eSWeichao Guo #endif 1824e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1825b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 18264081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1827e05df3b1SJaegeuk Kim SetPagePrivate(page); 18289e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1829e05df3b1SJaegeuk Kim return 1; 1830e05df3b1SJaegeuk Kim } 1831e05df3b1SJaegeuk Kim return 0; 1832e05df3b1SJaegeuk Kim } 1833e05df3b1SJaegeuk Kim 18340a8165d7SJaegeuk Kim /* 1835e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1836e05df3b1SJaegeuk Kim */ 1837e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1838e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1839e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1840e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1841487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1842487261f3SChao Yu .releasepage = f2fs_release_page, 18435b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 18445b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 18455b7a487cSWeichao Guo #endif 1846e05df3b1SJaegeuk Kim }; 1847e05df3b1SJaegeuk Kim 18488a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 18498a7ed66aSJaegeuk Kim nid_t n) 1850e05df3b1SJaegeuk Kim { 18518a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 18523aa770a9SNamjae Jeon } 1853e05df3b1SJaegeuk Kim 18549a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1855a0761f63SFan Li struct free_nid *i, enum nid_state state) 1856e05df3b1SJaegeuk Kim { 1857b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1858b8559dc2SChao Yu 1859eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1860eb0aa4b8SJaegeuk Kim if (err) 1861eb0aa4b8SJaegeuk Kim return err; 1862eb0aa4b8SJaegeuk Kim 18639a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 18649a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 18659a4ffdf5SChao Yu if (state == FREE_NID) 18669a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1867eb0aa4b8SJaegeuk Kim return 0; 1868b8559dc2SChao Yu } 1869b8559dc2SChao Yu 18709a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 1871a0761f63SFan Li struct free_nid *i, enum nid_state state) 1872b8559dc2SChao Yu { 1873b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1874b8559dc2SChao Yu 18759a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 18769a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 18779a4ffdf5SChao Yu if (state == FREE_NID) 1878e05df3b1SJaegeuk Kim list_del(&i->list); 18798a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1880e05df3b1SJaegeuk Kim } 1881e05df3b1SJaegeuk Kim 1882a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 1883a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 1884a0761f63SFan Li { 1885a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1886a0761f63SFan Li 1887a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 1888a0761f63SFan Li i->state = dst_state; 1889a0761f63SFan Li nm_i->nid_cnt[org_state]--; 1890a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 1891a0761f63SFan Li 1892a0761f63SFan Li switch (dst_state) { 1893a0761f63SFan Li case PREALLOC_NID: 1894a0761f63SFan Li list_del(&i->list); 1895a0761f63SFan Li break; 1896a0761f63SFan Li case FREE_NID: 1897a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 1898a0761f63SFan Li break; 1899a0761f63SFan Li default: 1900a0761f63SFan Li BUG_ON(1); 1901a0761f63SFan Li } 1902a0761f63SFan Li } 1903a0761f63SFan Li 19045921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 19055921aaa1SLiFan bool set, bool build) 19065921aaa1SLiFan { 19075921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 19085921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 19095921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 19105921aaa1SLiFan 19115921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 19125921aaa1SLiFan return; 19135921aaa1SLiFan 19145921aaa1SLiFan if (set) { 19155921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 19165921aaa1SLiFan return; 19175921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 19185921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 19195921aaa1SLiFan } else { 19205921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 19215921aaa1SLiFan return; 19225921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 19235921aaa1SLiFan if (!build) 19245921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 19255921aaa1SLiFan } 19265921aaa1SLiFan } 19275921aaa1SLiFan 19284ac91242SChao Yu /* return if the nid is recognized as free */ 19295921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 19305921aaa1SLiFan nid_t nid, bool build, bool update) 1931e05df3b1SJaegeuk Kim { 19326fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 193330a61ddfSChao Yu struct free_nid *i, *e; 193459bbd474SJaegeuk Kim struct nat_entry *ne; 193530a61ddfSChao Yu int err = -EINVAL; 193630a61ddfSChao Yu bool ret = false; 19379198acebSJaegeuk Kim 19389198acebSJaegeuk Kim /* 0 nid should not be used */ 1939cfb271d4SChao Yu if (unlikely(nid == 0)) 19404ac91242SChao Yu return false; 194159bbd474SJaegeuk Kim 19427bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1943e05df3b1SJaegeuk Kim i->nid = nid; 19449a4ffdf5SChao Yu i->state = FREE_NID; 1945e05df3b1SJaegeuk Kim 19465921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 1947769ec6e5SJaegeuk Kim 1948b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 194930a61ddfSChao Yu 195030a61ddfSChao Yu if (build) { 195130a61ddfSChao Yu /* 195230a61ddfSChao Yu * Thread A Thread B 195330a61ddfSChao Yu * - f2fs_create 195430a61ddfSChao Yu * - f2fs_new_inode 19554d57b86dSChao Yu * - f2fs_alloc_nid 19569a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 195730a61ddfSChao Yu * - f2fs_balance_fs_bg 19584d57b86dSChao Yu * - f2fs_build_free_nids 19594d57b86dSChao Yu * - __f2fs_build_free_nids 196030a61ddfSChao Yu * - scan_nat_page 196130a61ddfSChao Yu * - add_free_nid 196230a61ddfSChao Yu * - __lookup_nat_cache 196330a61ddfSChao Yu * - f2fs_add_link 19644d57b86dSChao Yu * - f2fs_init_inode_metadata 19654d57b86dSChao Yu * - f2fs_new_inode_page 19664d57b86dSChao Yu * - f2fs_new_node_page 196730a61ddfSChao Yu * - set_node_addr 19684d57b86dSChao Yu * - f2fs_alloc_nid_done 19699a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 19709a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 197130a61ddfSChao Yu */ 197230a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 197330a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 197430a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 197530a61ddfSChao Yu goto err_out; 197630a61ddfSChao Yu 197730a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 197830a61ddfSChao Yu if (e) { 19799a4ffdf5SChao Yu if (e->state == FREE_NID) 198030a61ddfSChao Yu ret = true; 198130a61ddfSChao Yu goto err_out; 198230a61ddfSChao Yu } 198330a61ddfSChao Yu } 198430a61ddfSChao Yu ret = true; 1985a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 198630a61ddfSChao Yu err_out: 19875921aaa1SLiFan if (update) { 19885921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 19895921aaa1SLiFan if (!build) 19905921aaa1SLiFan nm_i->available_nids++; 19915921aaa1SLiFan } 1992b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1993769ec6e5SJaegeuk Kim radix_tree_preload_end(); 19945921aaa1SLiFan 199530a61ddfSChao Yu if (err) 1996e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 199730a61ddfSChao Yu return ret; 1998e05df3b1SJaegeuk Kim } 1999e05df3b1SJaegeuk Kim 2000b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 2001e05df3b1SJaegeuk Kim { 2002b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2003e05df3b1SJaegeuk Kim struct free_nid *i; 2004cf0ee0f0SChao Yu bool need_free = false; 2005cf0ee0f0SChao Yu 2006b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 20078a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 20089a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 2009a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2010cf0ee0f0SChao Yu need_free = true; 2011e05df3b1SJaegeuk Kim } 2012b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2013cf0ee0f0SChao Yu 2014cf0ee0f0SChao Yu if (need_free) 2015cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2016e05df3b1SJaegeuk Kim } 2017e05df3b1SJaegeuk Kim 2018e2374015SChao Yu static int scan_nat_page(struct f2fs_sb_info *sbi, 2019e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 2020e05df3b1SJaegeuk Kim { 20216fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2022e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 2023e05df3b1SJaegeuk Kim block_t blk_addr; 20244ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 2025e05df3b1SJaegeuk Kim int i; 2026e05df3b1SJaegeuk Kim 202723380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 20284ac91242SChao Yu 2029e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 2030e05df3b1SJaegeuk Kim 2031e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 2032cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 203304431c44SJaegeuk Kim break; 203423d38844SHaicheng Li 2035e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 2036e2374015SChao Yu 2037e2374015SChao Yu if (blk_addr == NEW_ADDR) 2038e2374015SChao Yu return -EINVAL; 2039e2374015SChao Yu 20405921aaa1SLiFan if (blk_addr == NULL_ADDR) { 20415921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 20425921aaa1SLiFan } else { 2043346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 20445921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2045346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2046e05df3b1SJaegeuk Kim } 2047e05df3b1SJaegeuk Kim } 2048e2374015SChao Yu 2049e2374015SChao Yu return 0; 20505921aaa1SLiFan } 2051e05df3b1SJaegeuk Kim 20522fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 20534ac91242SChao Yu { 20544ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 20554ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 20562fbaa25fSChao Yu int i; 20574ac91242SChao Yu 20584ac91242SChao Yu down_read(&curseg->journal_rwsem); 20594ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 20604ac91242SChao Yu block_t addr; 20614ac91242SChao Yu nid_t nid; 20624ac91242SChao Yu 20634ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 20644ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 20654ac91242SChao Yu if (addr == NULL_ADDR) 20665921aaa1SLiFan add_free_nid(sbi, nid, true, false); 20674ac91242SChao Yu else 20684ac91242SChao Yu remove_free_nid(sbi, nid); 20694ac91242SChao Yu } 20704ac91242SChao Yu up_read(&curseg->journal_rwsem); 20712fbaa25fSChao Yu } 20722fbaa25fSChao Yu 2073e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 20744ac91242SChao Yu { 20754ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 20764ac91242SChao Yu unsigned int i, idx; 207797456574SFan Li nid_t nid; 20784ac91242SChao Yu 20794ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 20804ac91242SChao Yu 20814ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 20824ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 20834ac91242SChao Yu continue; 20844ac91242SChao Yu if (!nm_i->free_nid_count[i]) 20854ac91242SChao Yu continue; 20864ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 208797456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 208897456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 208997456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 209097456574SFan Li break; 20914ac91242SChao Yu 20924ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 20935921aaa1SLiFan add_free_nid(sbi, nid, true, false); 20944ac91242SChao Yu 20959a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 20964ac91242SChao Yu goto out; 20974ac91242SChao Yu } 20984ac91242SChao Yu } 20994ac91242SChao Yu out: 21002fbaa25fSChao Yu scan_curseg_cache(sbi); 21014ac91242SChao Yu 21024ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 21034ac91242SChao Yu } 21044ac91242SChao Yu 2105e2374015SChao Yu static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 21064d57b86dSChao Yu bool sync, bool mount) 2107e05df3b1SJaegeuk Kim { 2108e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2109e2374015SChao Yu int i = 0, ret; 211055008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2111e05df3b1SJaegeuk Kim 2112e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2113e9cdd307SYunlei He nid = 0; 2114e9cdd307SYunlei He 211555008d84SJaegeuk Kim /* Enough entries */ 21169a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2117e2374015SChao Yu return 0; 2118e05df3b1SJaegeuk Kim 21194d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2120e2374015SChao Yu return 0; 2121e05df3b1SJaegeuk Kim 21224ac91242SChao Yu if (!mount) { 21234ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 21244ac91242SChao Yu scan_free_nid_bits(sbi); 21254ac91242SChao Yu 212674986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 2127e2374015SChao Yu return 0; 212822ad0b6aSJaegeuk Kim } 212922ad0b6aSJaegeuk Kim 213055008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 21314d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 213226879fb1SChao Yu META_NAT, true); 2133e05df3b1SJaegeuk Kim 2134b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2135a5131193SJaegeuk Kim 2136e05df3b1SJaegeuk Kim while (1) { 213766e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 213866e83361SYunlei He nm_i->nat_block_bitmap)) { 2139e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2140e05df3b1SJaegeuk Kim 2141e2374015SChao Yu ret = scan_nat_page(sbi, page, nid); 2142e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2143e2374015SChao Yu 2144e2374015SChao Yu if (ret) { 2145e2374015SChao Yu up_read(&nm_i->nat_tree_lock); 2146e2374015SChao Yu f2fs_bug_on(sbi, !mount); 2147e2374015SChao Yu f2fs_msg(sbi->sb, KERN_ERR, 2148e2374015SChao Yu "NAT is corrupt, run fsck to fix it"); 2149e2374015SChao Yu return -EINVAL; 2150e2374015SChao Yu } 215166e83361SYunlei He } 2152e05df3b1SJaegeuk Kim 2153e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2154cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2155e05df3b1SJaegeuk Kim nid = 0; 215655008d84SJaegeuk Kim 2157a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2158e05df3b1SJaegeuk Kim break; 2159e05df3b1SJaegeuk Kim } 2160e05df3b1SJaegeuk Kim 216155008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 216255008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2163e05df3b1SJaegeuk Kim 2164e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 21652fbaa25fSChao Yu scan_curseg_cache(sbi); 2166dfc08a12SChao Yu 2167b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 21682db2388fSChao Yu 21694d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2170ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2171e2374015SChao Yu 2172e2374015SChao Yu return 0; 2173e05df3b1SJaegeuk Kim } 2174e05df3b1SJaegeuk Kim 2175e2374015SChao Yu int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 21762411cf5bSChao Yu { 2177e2374015SChao Yu int ret; 2178e2374015SChao Yu 21792411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 2180e2374015SChao Yu ret = __f2fs_build_free_nids(sbi, sync, mount); 21812411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 2182e2374015SChao Yu 2183e2374015SChao Yu return ret; 21842411cf5bSChao Yu } 21852411cf5bSChao Yu 2186e05df3b1SJaegeuk Kim /* 2187e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2188e05df3b1SJaegeuk Kim * from second parameter of this function. 2189e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2190e05df3b1SJaegeuk Kim */ 21914d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2192e05df3b1SJaegeuk Kim { 2193e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2194e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2195e05df3b1SJaegeuk Kim retry: 2196cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 219755523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 219855523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2199cb78942bSJaegeuk Kim return false; 220055523519SChao Yu } 2201cb78942bSJaegeuk Kim #endif 2202b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2203e05df3b1SJaegeuk Kim 220404d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 220504d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 220604d47e67SChao Yu return false; 220704d47e67SChao Yu } 2208e05df3b1SJaegeuk Kim 22094d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 22104d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 22119a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 22129a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2213b8559dc2SChao Yu struct free_nid, list); 2214e05df3b1SJaegeuk Kim *nid = i->nid; 2215b8559dc2SChao Yu 2216a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 221704d47e67SChao Yu nm_i->available_nids--; 22184ac91242SChao Yu 2219346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 22204ac91242SChao Yu 2221b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2222e05df3b1SJaegeuk Kim return true; 2223e05df3b1SJaegeuk Kim } 2224b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 222555008d84SJaegeuk Kim 222655008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 22274d57b86dSChao Yu f2fs_build_free_nids(sbi, true, false); 222855008d84SJaegeuk Kim goto retry; 222955008d84SJaegeuk Kim } 2230e05df3b1SJaegeuk Kim 22310a8165d7SJaegeuk Kim /* 22324d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2233e05df3b1SJaegeuk Kim */ 22344d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2235e05df3b1SJaegeuk Kim { 2236e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2237e05df3b1SJaegeuk Kim struct free_nid *i; 2238e05df3b1SJaegeuk Kim 2239b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22408a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2241b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2242a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2243b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2244cf0ee0f0SChao Yu 2245cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2246e05df3b1SJaegeuk Kim } 2247e05df3b1SJaegeuk Kim 22480a8165d7SJaegeuk Kim /* 22494d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2250e05df3b1SJaegeuk Kim */ 22514d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2252e05df3b1SJaegeuk Kim { 225349952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 225449952fa1SJaegeuk Kim struct free_nid *i; 2255cf0ee0f0SChao Yu bool need_free = false; 225649952fa1SJaegeuk Kim 225765985d93SJaegeuk Kim if (!nid) 225865985d93SJaegeuk Kim return; 225965985d93SJaegeuk Kim 2260b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22618a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2262b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2263b8559dc2SChao Yu 22644d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2265a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2266cf0ee0f0SChao Yu need_free = true; 226795630cbaSHaicheng Li } else { 2268a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 226995630cbaSHaicheng Li } 227004d47e67SChao Yu 227104d47e67SChao Yu nm_i->available_nids++; 227204d47e67SChao Yu 2273346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 22744ac91242SChao Yu 2275b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2276cf0ee0f0SChao Yu 2277cf0ee0f0SChao Yu if (need_free) 2278cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2279e05df3b1SJaegeuk Kim } 2280e05df3b1SJaegeuk Kim 22814d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 228231696580SChao Yu { 228331696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 228431696580SChao Yu struct free_nid *i, *next; 228531696580SChao Yu int nr = nr_shrink; 228631696580SChao Yu 22879a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2288ad4edb83SJaegeuk Kim return 0; 2289ad4edb83SJaegeuk Kim 229031696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 229131696580SChao Yu return 0; 229231696580SChao Yu 2293b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22949a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2295b8559dc2SChao Yu if (nr_shrink <= 0 || 22969a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 229731696580SChao Yu break; 2298b8559dc2SChao Yu 2299a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 230031696580SChao Yu kmem_cache_free(free_nid_slab, i); 230131696580SChao Yu nr_shrink--; 230231696580SChao Yu } 2303b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 230431696580SChao Yu mutex_unlock(&nm_i->build_lock); 230531696580SChao Yu 230631696580SChao Yu return nr - nr_shrink; 230731696580SChao Yu } 230831696580SChao Yu 23094d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 231028cdce04SChao Yu { 231128cdce04SChao Yu void *src_addr, *dst_addr; 231228cdce04SChao Yu size_t inline_size; 231328cdce04SChao Yu struct page *ipage; 231428cdce04SChao Yu struct f2fs_inode *ri; 231528cdce04SChao Yu 23164d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 23179850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 231828cdce04SChao Yu 2319e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 23201eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 23211eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 23221eca05aaSYunlei He } else { 232391942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2324e3b4d43fSJaegeuk Kim goto update_inode; 2325e3b4d43fSJaegeuk Kim } 2326e3b4d43fSJaegeuk Kim 23276afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 23286afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 232928cdce04SChao Yu inline_size = inline_xattr_size(inode); 233028cdce04SChao Yu 2331fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 233228cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2333e3b4d43fSJaegeuk Kim update_inode: 23344d57b86dSChao Yu f2fs_update_inode(inode, ipage); 233528cdce04SChao Yu f2fs_put_page(ipage, 1); 233628cdce04SChao Yu } 233728cdce04SChao Yu 23384d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2339abb2366cSJaegeuk Kim { 23404081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2341abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 234287905682SYunlei He nid_t new_xnid; 234387905682SYunlei He struct dnode_of_data dn; 2344abb2366cSJaegeuk Kim struct node_info ni; 2345d260081cSChao Yu struct page *xpage; 23467735730dSChao Yu int err; 2347abb2366cSJaegeuk Kim 2348abb2366cSJaegeuk Kim if (!prev_xnid) 2349abb2366cSJaegeuk Kim goto recover_xnid; 2350abb2366cSJaegeuk Kim 2351d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 23527735730dSChao Yu err = f2fs_get_node_info(sbi, prev_xnid, &ni); 23537735730dSChao Yu if (err) 23547735730dSChao Yu return err; 23557735730dSChao Yu 23564d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2357000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2358479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2359abb2366cSJaegeuk Kim 2360abb2366cSJaegeuk Kim recover_xnid: 2361d260081cSChao Yu /* 2: update xattr nid in inode */ 23624d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 236387905682SYunlei He return -ENOSPC; 236487905682SYunlei He 236587905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 23664d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 236787905682SYunlei He if (IS_ERR(xpage)) { 23684d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 236987905682SYunlei He return PTR_ERR(xpage); 237087905682SYunlei He } 237187905682SYunlei He 23724d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 23734d57b86dSChao Yu f2fs_update_inode_page(inode); 2374abb2366cSJaegeuk Kim 2375d260081cSChao Yu /* 3: update and set xattr node page dirty */ 237687905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2377d260081cSChao Yu 2378d260081cSChao Yu set_page_dirty(xpage); 2379d260081cSChao Yu f2fs_put_page(xpage, 1); 2380abb2366cSJaegeuk Kim 2381d260081cSChao Yu return 0; 2382abb2366cSJaegeuk Kim } 2383abb2366cSJaegeuk Kim 23844d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2385e05df3b1SJaegeuk Kim { 238658bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2387e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2388e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2389e05df3b1SJaegeuk Kim struct page *ipage; 23907735730dSChao Yu int err; 2391e05df3b1SJaegeuk Kim 23927735730dSChao Yu err = f2fs_get_node_info(sbi, ino, &old_ni); 23937735730dSChao Yu if (err) 23947735730dSChao Yu return err; 2395e8271fa3SJaegeuk Kim 2396e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2397e8271fa3SJaegeuk Kim return -EINVAL; 2398e8ea9b3dSJaegeuk Kim retry: 2399300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2400e8ea9b3dSJaegeuk Kim if (!ipage) { 2401e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2402e8ea9b3dSJaegeuk Kim goto retry; 2403e8ea9b3dSJaegeuk Kim } 2404e05df3b1SJaegeuk Kim 2405e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2406b8559dc2SChao Yu remove_free_nid(sbi, ino); 2407e05df3b1SJaegeuk Kim 2408237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2409e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2410e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2411c5667575SChao Yu set_cold_node(page, false); 2412e05df3b1SJaegeuk Kim 241358bfaf44SJaegeuk Kim src = F2FS_INODE(page); 241458bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2415e05df3b1SJaegeuk Kim 241658bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 241758bfaf44SJaegeuk Kim dst->i_size = 0; 241858bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 241958bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 242058bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 24217a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 24225c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 24237a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 24246afc662eSChao Yu 24256afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 24266afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 24276afc662eSChao Yu i_inline_xattr_size)) 24286afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 24296afc662eSChao Yu 24305c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 24315c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 24325c57132eSChao Yu i_projid)) 24335c57132eSChao Yu dst->i_projid = src->i_projid; 24345c57132eSChao Yu } 2435e05df3b1SJaegeuk Kim 2436e05df3b1SJaegeuk Kim new_ni = old_ni; 2437e05df3b1SJaegeuk Kim new_ni.ino = ino; 2438e05df3b1SJaegeuk Kim 24390abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 244065e5cd0aSJaegeuk Kim WARN_ON(1); 2441479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2442e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2443617deb8cSJaegeuk Kim set_page_dirty(ipage); 2444e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2445e05df3b1SJaegeuk Kim return 0; 2446e05df3b1SJaegeuk Kim } 2447e05df3b1SJaegeuk Kim 24487735730dSChao Yu int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2449e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2450e05df3b1SJaegeuk Kim { 2451e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2452e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2453e05df3b1SJaegeuk Kim block_t addr; 24549ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2455e05df3b1SJaegeuk Kim 2456e05df3b1SJaegeuk Kim /* scan the node segment */ 2457e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2458e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2459e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2460e05df3b1SJaegeuk Kim 24619ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2462664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2463393ff91fSJaegeuk Kim 24649af0ff1cSChao Yu /* readahead node pages */ 24654d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 24669af0ff1cSChao Yu 24679ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 24684d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2469393ff91fSJaegeuk Kim 24707735730dSChao Yu if (IS_ERR(page)) 24717735730dSChao Yu return PTR_ERR(page); 24727735730dSChao Yu 24739ecf4b80SChao Yu rn = F2FS_NODE(page); 2474393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2475393ff91fSJaegeuk Kim sum_entry->version = 0; 2476393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 24779af0ff1cSChao Yu sum_entry++; 24789ecf4b80SChao Yu f2fs_put_page(page, 1); 24799af0ff1cSChao Yu } 2480bac4eef6SChao Yu 24819ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2482bac4eef6SChao Yu addr + nrpages); 24839af0ff1cSChao Yu } 24847735730dSChao Yu return 0; 2485e05df3b1SJaegeuk Kim } 2486e05df3b1SJaegeuk Kim 2487aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2488e05df3b1SJaegeuk Kim { 2489e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2490e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2491b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2492e05df3b1SJaegeuk Kim int i; 2493e05df3b1SJaegeuk Kim 2494b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2495dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2496e05df3b1SJaegeuk Kim struct nat_entry *ne; 2497e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2498dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2499e05df3b1SJaegeuk Kim 2500dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 25019be32d72SJaegeuk Kim 2502e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2503e05df3b1SJaegeuk Kim if (!ne) { 250412f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 250512f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 25069be32d72SJaegeuk Kim } 250704d47e67SChao Yu 250804d47e67SChao Yu /* 250904d47e67SChao Yu * if a free nat in journal has not been used after last 251004d47e67SChao Yu * checkpoint, we should remove it from available nids, 251104d47e67SChao Yu * since later we will add it again. 251204d47e67SChao Yu */ 251304d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 251404d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 251504d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 251604d47e67SChao Yu nm_i->available_nids--; 251704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 251804d47e67SChao Yu } 251904d47e67SChao Yu 2520e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2521e05df3b1SJaegeuk Kim } 2522dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2523b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2524e05df3b1SJaegeuk Kim } 2525e05df3b1SJaegeuk Kim 2526309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2527309cc2b6SJaegeuk Kim struct list_head *head, int max) 2528e05df3b1SJaegeuk Kim { 2529309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2530e05df3b1SJaegeuk Kim 2531309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2532309cc2b6SJaegeuk Kim goto add_out; 2533e05df3b1SJaegeuk Kim 2534309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2535309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2536309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2537309cc2b6SJaegeuk Kim return; 2538309cc2b6SJaegeuk Kim } 2539309cc2b6SJaegeuk Kim } 2540309cc2b6SJaegeuk Kim add_out: 2541309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2542aec71382SChao Yu } 2543aec71382SChao Yu 25449f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 254522ad0b6aSJaegeuk Kim struct page *page) 254622ad0b6aSJaegeuk Kim { 254722ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 254822ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 254922ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 255022ad0b6aSJaegeuk Kim int valid = 0; 255137a0ab2aSFan Li int i = 0; 255222ad0b6aSJaegeuk Kim 255322ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 255422ad0b6aSJaegeuk Kim return; 255522ad0b6aSJaegeuk Kim 255637a0ab2aSFan Li if (nat_index == 0) { 255737a0ab2aSFan Li valid = 1; 255837a0ab2aSFan Li i = 1; 255937a0ab2aSFan Li } 256037a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 256137a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 256222ad0b6aSJaegeuk Kim valid++; 256322ad0b6aSJaegeuk Kim } 256422ad0b6aSJaegeuk Kim if (valid == 0) { 256523380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 256623380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 256722ad0b6aSJaegeuk Kim return; 256822ad0b6aSJaegeuk Kim } 256922ad0b6aSJaegeuk Kim 257023380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 257122ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 257223380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 257322ad0b6aSJaegeuk Kim else 257423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 257522ad0b6aSJaegeuk Kim } 257622ad0b6aSJaegeuk Kim 2577309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 257822ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2579309cc2b6SJaegeuk Kim { 2580309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2581b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2582309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2583309cc2b6SJaegeuk Kim bool to_journal = true; 2584309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2585309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2586309cc2b6SJaegeuk Kim struct page *page = NULL; 2587aec71382SChao Yu 2588aec71382SChao Yu /* 2589aec71382SChao Yu * there are two steps to flush nat entries: 2590aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2591aec71382SChao Yu * #2, flush nat entries to nat page. 2592aec71382SChao Yu */ 259322ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 259422ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2595aec71382SChao Yu to_journal = false; 2596aec71382SChao Yu 2597aec71382SChao Yu if (to_journal) { 2598b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2599aec71382SChao Yu } else { 2600e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2601e05df3b1SJaegeuk Kim nat_blk = page_address(page); 26029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2603e05df3b1SJaegeuk Kim } 2604e05df3b1SJaegeuk Kim 2605aec71382SChao Yu /* flush dirty nats in nat entry set */ 2606309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2607aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2608aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2609aec71382SChao Yu int offset; 2610aec71382SChao Yu 2611febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2612309cc2b6SJaegeuk Kim 2613aec71382SChao Yu if (to_journal) { 26144d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2615aec71382SChao Yu NAT_JOURNAL, nid, 1); 26169850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2617dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2618dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2619aec71382SChao Yu } else { 2620aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2621aec71382SChao Yu } 2622aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 262388bd02c9SJaegeuk Kim nat_reset_flag(ne); 26240b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 262504d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 26265921aaa1SLiFan add_free_nid(sbi, nid, false, true); 26274ac91242SChao Yu } else { 26284ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2629346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 263004d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 263104d47e67SChao Yu } 2632e05df3b1SJaegeuk Kim } 2633aec71382SChao Yu 263422ad0b6aSJaegeuk Kim if (to_journal) { 2635b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 263622ad0b6aSJaegeuk Kim } else { 263722ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2638e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 263922ad0b6aSJaegeuk Kim } 2640aec71382SChao Yu 264159c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 264259c9081bSYunlei He if (!set->entry_cnt) { 2643309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2644309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2645309cc2b6SJaegeuk Kim } 264659c9081bSYunlei He } 2647aec71382SChao Yu 2648309cc2b6SJaegeuk Kim /* 2649309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2650309cc2b6SJaegeuk Kim */ 26514d57b86dSChao Yu void f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2652309cc2b6SJaegeuk Kim { 2653309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2654309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2655b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 26567aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2657309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2658309cc2b6SJaegeuk Kim unsigned int found; 2659309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2660309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2661309cc2b6SJaegeuk Kim 26627f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 26637f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 26647f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 26657f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 26667f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 26677f2ecdd8SJaegeuk Kim } 26687f2ecdd8SJaegeuk Kim 266920d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 267020d047c8SChangman Lee return; 2671a5131193SJaegeuk Kim 2672b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2673a5131193SJaegeuk Kim 2674309cc2b6SJaegeuk Kim /* 2675309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2676309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2677309cc2b6SJaegeuk Kim * into nat entry set. 2678309cc2b6SJaegeuk Kim */ 2679900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 268022ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2681309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2682309cc2b6SJaegeuk Kim 2683309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 26847aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2685309cc2b6SJaegeuk Kim unsigned idx; 2686309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2687309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2688309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2689dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2690309cc2b6SJaegeuk Kim } 2691309cc2b6SJaegeuk Kim 2692309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2693309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 269422ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2695309cc2b6SJaegeuk Kim 2696b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 269759c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2698e05df3b1SJaegeuk Kim } 2699e05df3b1SJaegeuk Kim 270022ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 270122ad0b6aSJaegeuk Kim { 270222ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 270322ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 270422ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 270522ad0b6aSJaegeuk Kim unsigned int i; 270622ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 270722ad0b6aSJaegeuk Kim block_t nat_bits_addr; 270822ad0b6aSJaegeuk Kim 270922ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 271022ad0b6aSJaegeuk Kim return 0; 271122ad0b6aSJaegeuk Kim 2712df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2713acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2714acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 271522ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 271622ad0b6aSJaegeuk Kim return -ENOMEM; 271722ad0b6aSJaegeuk Kim 271822ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 271922ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 272022ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 27217735730dSChao Yu struct page *page; 27227735730dSChao Yu 27237735730dSChao Yu page = f2fs_get_meta_page(sbi, nat_bits_addr++); 27247735730dSChao Yu if (IS_ERR(page)) { 27257735730dSChao Yu disable_nat_bits(sbi, true); 27267735730dSChao Yu return PTR_ERR(page); 27277735730dSChao Yu } 272822ad0b6aSJaegeuk Kim 272922ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 273022ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 273122ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 273222ad0b6aSJaegeuk Kim } 273322ad0b6aSJaegeuk Kim 2734ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 273522ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 273622ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 273722ad0b6aSJaegeuk Kim return 0; 273822ad0b6aSJaegeuk Kim } 273922ad0b6aSJaegeuk Kim 274022ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 274122ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 274222ad0b6aSJaegeuk Kim 274322ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 274422ad0b6aSJaegeuk Kim return 0; 274522ad0b6aSJaegeuk Kim } 274622ad0b6aSJaegeuk Kim 2747bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 27487041d5d2SChao Yu { 27497041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 27507041d5d2SChao Yu unsigned int i = 0; 27517041d5d2SChao Yu nid_t nid, last_nid; 27527041d5d2SChao Yu 27537041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 27547041d5d2SChao Yu return; 27557041d5d2SChao Yu 27567041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 27577041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 27587041d5d2SChao Yu if (i >= nm_i->nat_blocks) 27597041d5d2SChao Yu break; 27607041d5d2SChao Yu 27617041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 27627041d5d2SChao Yu 27637041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2764f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 27657041d5d2SChao Yu 2766346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 27677041d5d2SChao Yu for (; nid < last_nid; nid++) 2768346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2769346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 27707041d5d2SChao Yu } 27717041d5d2SChao Yu 27727041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 27737041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 27747041d5d2SChao Yu if (i >= nm_i->nat_blocks) 27757041d5d2SChao Yu break; 27767041d5d2SChao Yu 27777041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 27787041d5d2SChao Yu } 27797041d5d2SChao Yu } 27807041d5d2SChao Yu 2781e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2782e05df3b1SJaegeuk Kim { 2783e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2784e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2785e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 278622ad0b6aSJaegeuk Kim unsigned int nat_segs; 278722ad0b6aSJaegeuk Kim int err; 2788e05df3b1SJaegeuk Kim 2789e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2790e05df3b1SJaegeuk Kim 2791e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2792e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 279322ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 279422ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 27957ee0eeabSJaegeuk Kim 2796b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 279704d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2798292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 27999a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 28009a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2801e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2802cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2803ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 28042304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2805e05df3b1SJaegeuk Kim 28068a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 28079a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2808769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2809769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2810e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2811e05df3b1SJaegeuk Kim 2812e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2813b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2814b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2815e05df3b1SJaegeuk Kim 2816e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 281779b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2818e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2819e05df3b1SJaegeuk Kim if (!version_bitmap) 2820e05df3b1SJaegeuk Kim return -EFAULT; 2821e05df3b1SJaegeuk Kim 282279b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 282379b5793bSAlexandru Gheorghiu GFP_KERNEL); 282479b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 282579b5793bSAlexandru Gheorghiu return -ENOMEM; 2826599a09b2SChao Yu 282722ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 282822ad0b6aSJaegeuk Kim if (err) 282922ad0b6aSJaegeuk Kim return err; 283022ad0b6aSJaegeuk Kim 2831599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2832599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2833599a09b2SChao Yu GFP_KERNEL); 2834599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2835599a09b2SChao Yu return -ENOMEM; 2836599a09b2SChao Yu #endif 2837599a09b2SChao Yu 2838e05df3b1SJaegeuk Kim return 0; 2839e05df3b1SJaegeuk Kim } 2840e05df3b1SJaegeuk Kim 28419f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 28424ac91242SChao Yu { 28434ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2844bb1105e4SJaegeuk Kim int i; 28454ac91242SChao Yu 2846026f0507SKees Cook nm_i->free_nid_bitmap = 2847026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 2848026f0507SKees Cook nm_i->nat_blocks), 2849026f0507SKees Cook GFP_KERNEL); 28504ac91242SChao Yu if (!nm_i->free_nid_bitmap) 28514ac91242SChao Yu return -ENOMEM; 28524ac91242SChao Yu 2853bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 2854bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 2855e15d54d5SYunlei He f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); 285668c43a23SYunlei He if (!nm_i->free_nid_bitmap[i]) 2857bb1105e4SJaegeuk Kim return -ENOMEM; 2858bb1105e4SJaegeuk Kim } 2859bb1105e4SJaegeuk Kim 2860628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 28614ac91242SChao Yu GFP_KERNEL); 28624ac91242SChao Yu if (!nm_i->nat_block_bitmap) 28634ac91242SChao Yu return -ENOMEM; 2864586d1492SChao Yu 28659d2a789cSKees Cook nm_i->free_nid_count = 28669d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 28679d2a789cSKees Cook nm_i->nat_blocks), 28689d2a789cSKees Cook GFP_KERNEL); 2869586d1492SChao Yu if (!nm_i->free_nid_count) 2870586d1492SChao Yu return -ENOMEM; 28714ac91242SChao Yu return 0; 28724ac91242SChao Yu } 28734ac91242SChao Yu 28744d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 2875e05df3b1SJaegeuk Kim { 2876e05df3b1SJaegeuk Kim int err; 2877e05df3b1SJaegeuk Kim 2878acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 2879acbf054dSChao Yu GFP_KERNEL); 2880e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2881e05df3b1SJaegeuk Kim return -ENOMEM; 2882e05df3b1SJaegeuk Kim 2883e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2884e05df3b1SJaegeuk Kim if (err) 2885e05df3b1SJaegeuk Kim return err; 2886e05df3b1SJaegeuk Kim 28874ac91242SChao Yu err = init_free_nid_cache(sbi); 28884ac91242SChao Yu if (err) 28894ac91242SChao Yu return err; 28904ac91242SChao Yu 28917041d5d2SChao Yu /* load free nid status from nat_bits table */ 28927041d5d2SChao Yu load_free_nid_bitmap(sbi); 28937041d5d2SChao Yu 2894e2374015SChao Yu return f2fs_build_free_nids(sbi, true, true); 2895e05df3b1SJaegeuk Kim } 2896e05df3b1SJaegeuk Kim 28974d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 2898e05df3b1SJaegeuk Kim { 2899e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2900e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2901e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 29027aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2903e05df3b1SJaegeuk Kim nid_t nid = 0; 2904e05df3b1SJaegeuk Kim unsigned int found; 2905e05df3b1SJaegeuk Kim 2906e05df3b1SJaegeuk Kim if (!nm_i) 2907e05df3b1SJaegeuk Kim return; 2908e05df3b1SJaegeuk Kim 2909e05df3b1SJaegeuk Kim /* destroy free nid list */ 2910b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 29119a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 2912a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2913b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2914cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2915b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2916e05df3b1SJaegeuk Kim } 29179a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 29189a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 29199a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 2920b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2921e05df3b1SJaegeuk Kim 2922e05df3b1SJaegeuk Kim /* destroy nat cache */ 2923b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2924e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2925e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2926e05df3b1SJaegeuk Kim unsigned idx; 29277aed0d45SJaegeuk Kim 2928b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2929b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2930b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2931e05df3b1SJaegeuk Kim } 29329850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 29337aed0d45SJaegeuk Kim 29347aed0d45SJaegeuk Kim /* destroy nat set cache */ 29357aed0d45SJaegeuk Kim nid = 0; 29367aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 29377aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 29387aed0d45SJaegeuk Kim unsigned idx; 29397aed0d45SJaegeuk Kim 29407aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 29417aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 29427aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 29437aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 29447aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 29457aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 29467aed0d45SJaegeuk Kim } 29477aed0d45SJaegeuk Kim } 2948b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2949e05df3b1SJaegeuk Kim 29504ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 2951bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 2952bb1105e4SJaegeuk Kim int i; 2953bb1105e4SJaegeuk Kim 2954bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 2955bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 2956bb1105e4SJaegeuk Kim kfree(nm_i->free_nid_bitmap); 2957bb1105e4SJaegeuk Kim } 2958586d1492SChao Yu kvfree(nm_i->free_nid_count); 29594ac91242SChao Yu 2960e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 296122ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2962599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2963599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2964599a09b2SChao Yu #endif 2965e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2966e05df3b1SJaegeuk Kim kfree(nm_i); 2967e05df3b1SJaegeuk Kim } 2968e05df3b1SJaegeuk Kim 29694d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 2970e05df3b1SJaegeuk Kim { 2971e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2972e8512d2eSGu Zheng sizeof(struct nat_entry)); 2973e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2974aec71382SChao Yu goto fail; 2975e05df3b1SJaegeuk Kim 2976e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2977e8512d2eSGu Zheng sizeof(struct free_nid)); 2978aec71382SChao Yu if (!free_nid_slab) 2979ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2980aec71382SChao Yu 2981aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2982aec71382SChao Yu sizeof(struct nat_entry_set)); 2983aec71382SChao Yu if (!nat_entry_set_slab) 2984ce3e6d25SMarkus Elfring goto destroy_free_nid; 2985e05df3b1SJaegeuk Kim return 0; 2986aec71382SChao Yu 2987ce3e6d25SMarkus Elfring destroy_free_nid: 2988aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2989ce3e6d25SMarkus Elfring destroy_nat_entry: 2990aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2991aec71382SChao Yu fail: 2992aec71382SChao Yu return -ENOMEM; 2993e05df3b1SJaegeuk Kim } 2994e05df3b1SJaegeuk Kim 29954d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 2996e05df3b1SJaegeuk Kim { 2997aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2998e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2999e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 3000e05df3b1SJaegeuk Kim } 3001