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 { 115e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 1164d57b86dSChao Yu return f2fs_get_meta_page(sbi, index); 117e05df3b1SJaegeuk Kim } 118e05df3b1SJaegeuk Kim 119e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 120e05df3b1SJaegeuk Kim { 121e05df3b1SJaegeuk Kim struct page *src_page; 122e05df3b1SJaegeuk Kim struct page *dst_page; 123e05df3b1SJaegeuk Kim pgoff_t src_off; 124e05df3b1SJaegeuk Kim pgoff_t dst_off; 125e05df3b1SJaegeuk Kim void *src_addr; 126e05df3b1SJaegeuk Kim void *dst_addr; 127e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 128e05df3b1SJaegeuk Kim 129e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 130e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 131e05df3b1SJaegeuk Kim 132e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 1334d57b86dSChao Yu src_page = f2fs_get_meta_page(sbi, src_off); 1344d57b86dSChao Yu dst_page = f2fs_grab_meta_page(sbi, dst_off); 1359850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 136e05df3b1SJaegeuk Kim 137e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 138e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 13909cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 140e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 141e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 142e05df3b1SJaegeuk Kim 143e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 144e05df3b1SJaegeuk Kim 145e05df3b1SJaegeuk Kim return dst_page; 146e05df3b1SJaegeuk Kim } 147e05df3b1SJaegeuk Kim 14812f9ef37SYunlei He static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) 14912f9ef37SYunlei He { 15012f9ef37SYunlei He struct nat_entry *new; 15112f9ef37SYunlei He 15212f9ef37SYunlei He if (no_fail) 1532882d343SChao Yu new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15412f9ef37SYunlei He else 1552882d343SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); 15612f9ef37SYunlei He if (new) { 15712f9ef37SYunlei He nat_set_nid(new, nid); 15812f9ef37SYunlei He nat_reset_flag(new); 15912f9ef37SYunlei He } 16012f9ef37SYunlei He return new; 16112f9ef37SYunlei He } 16212f9ef37SYunlei He 16312f9ef37SYunlei He static void __free_nat_entry(struct nat_entry *e) 16412f9ef37SYunlei He { 16512f9ef37SYunlei He kmem_cache_free(nat_entry_slab, e); 16612f9ef37SYunlei He } 16712f9ef37SYunlei He 16812f9ef37SYunlei He /* must be locked by nat_tree_lock */ 16912f9ef37SYunlei He static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, 17012f9ef37SYunlei He struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) 17112f9ef37SYunlei He { 17212f9ef37SYunlei He if (no_fail) 17312f9ef37SYunlei He f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); 17412f9ef37SYunlei He else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) 17512f9ef37SYunlei He return NULL; 17612f9ef37SYunlei He 17712f9ef37SYunlei He if (raw_ne) 17812f9ef37SYunlei He node_info_from_raw_nat(&ne->ni, raw_ne); 17912f9ef37SYunlei He list_add_tail(&ne->list, &nm_i->nat_entries); 18012f9ef37SYunlei He nm_i->nat_cnt++; 18112f9ef37SYunlei He return ne; 18212f9ef37SYunlei He } 18312f9ef37SYunlei He 184e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 185e05df3b1SJaegeuk Kim { 186e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 187e05df3b1SJaegeuk Kim } 188e05df3b1SJaegeuk Kim 189e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 190e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 191e05df3b1SJaegeuk Kim { 192e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 193e05df3b1SJaegeuk Kim } 194e05df3b1SJaegeuk Kim 195e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 196e05df3b1SJaegeuk Kim { 197e05df3b1SJaegeuk Kim list_del(&e->list); 198e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 199e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 20012f9ef37SYunlei He __free_nat_entry(e); 201e05df3b1SJaegeuk Kim } 202e05df3b1SJaegeuk Kim 203780de47cSChao Yu static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, 204309cc2b6SJaegeuk Kim struct nat_entry *ne) 205309cc2b6SJaegeuk Kim { 206309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 207309cc2b6SJaegeuk Kim struct nat_entry_set *head; 208309cc2b6SJaegeuk Kim 209309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 210309cc2b6SJaegeuk Kim if (!head) { 21180c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 212309cc2b6SJaegeuk Kim 213309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 214309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 215309cc2b6SJaegeuk Kim head->set = set; 216309cc2b6SJaegeuk Kim head->entry_cnt = 0; 2179be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 218309cc2b6SJaegeuk Kim } 219780de47cSChao Yu return head; 220780de47cSChao Yu } 221780de47cSChao Yu 222780de47cSChao Yu static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 223780de47cSChao Yu struct nat_entry *ne) 224780de47cSChao Yu { 225780de47cSChao Yu struct nat_entry_set *head; 226780de47cSChao Yu bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; 227780de47cSChao Yu 228780de47cSChao Yu if (!new_ne) 229780de47cSChao Yu head = __grab_nat_entry_set(nm_i, ne); 230780de47cSChao Yu 231780de47cSChao Yu /* 232780de47cSChao Yu * update entry_cnt in below condition: 233780de47cSChao Yu * 1. update NEW_ADDR to valid block address; 234780de47cSChao Yu * 2. update old block address to new one; 235780de47cSChao Yu */ 236780de47cSChao Yu if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || 237780de47cSChao Yu !get_nat_flag(ne, IS_DIRTY))) 238780de47cSChao Yu head->entry_cnt++; 239780de47cSChao Yu 240780de47cSChao Yu set_nat_flag(ne, IS_PREALLOC, new_ne); 241febeca6dSChao Yu 242febeca6dSChao Yu if (get_nat_flag(ne, IS_DIRTY)) 243febeca6dSChao Yu goto refresh_list; 244febeca6dSChao Yu 245309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 246309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 247febeca6dSChao Yu refresh_list: 248780de47cSChao Yu if (new_ne) 249febeca6dSChao Yu list_del_init(&ne->list); 250febeca6dSChao Yu else 251febeca6dSChao Yu list_move_tail(&ne->list, &head->entry_list); 252309cc2b6SJaegeuk Kim } 253309cc2b6SJaegeuk Kim 254309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 2550b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 256309cc2b6SJaegeuk Kim { 257309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 258309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 2590b28b71eSKinglong Mee set->entry_cnt--; 260309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 261309cc2b6SJaegeuk Kim } 262309cc2b6SJaegeuk Kim 263309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 264309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 265309cc2b6SJaegeuk Kim { 266309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 267309cc2b6SJaegeuk Kim start, nr); 268309cc2b6SJaegeuk Kim } 269309cc2b6SJaegeuk Kim 2704d57b86dSChao Yu int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2712dcf51abSJaegeuk Kim { 2722dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2732dcf51abSJaegeuk Kim struct nat_entry *e; 2742dcf51abSJaegeuk Kim bool need = false; 2752dcf51abSJaegeuk Kim 276b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2772dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2782dcf51abSJaegeuk Kim if (e) { 2792dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2802dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2812dcf51abSJaegeuk Kim need = true; 2822dcf51abSJaegeuk Kim } 283b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2842dcf51abSJaegeuk Kim return need; 2852dcf51abSJaegeuk Kim } 2862dcf51abSJaegeuk Kim 2874d57b86dSChao Yu bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 288e05df3b1SJaegeuk Kim { 289e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 290e05df3b1SJaegeuk Kim struct nat_entry *e; 29188bd02c9SJaegeuk Kim bool is_cp = true; 292e05df3b1SJaegeuk Kim 293b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 294e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2957ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 29688bd02c9SJaegeuk Kim is_cp = false; 297b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 298e05df3b1SJaegeuk Kim return is_cp; 299e05df3b1SJaegeuk Kim } 300e05df3b1SJaegeuk Kim 3014d57b86dSChao Yu bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 302b6fe5873SJaegeuk Kim { 303b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 304b6fe5873SJaegeuk Kim struct nat_entry *e; 30588bd02c9SJaegeuk Kim bool need_update = true; 306b6fe5873SJaegeuk Kim 307b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 30888bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 30988bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 31088bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 31188bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 31288bd02c9SJaegeuk Kim need_update = false; 313b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 31488bd02c9SJaegeuk Kim return need_update; 315b6fe5873SJaegeuk Kim } 316b6fe5873SJaegeuk Kim 31712f9ef37SYunlei He /* must be locked by nat_tree_lock */ 3181515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 319e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 320e05df3b1SJaegeuk Kim { 3211515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 32212f9ef37SYunlei He struct nat_entry *new, *e; 3239be32d72SJaegeuk Kim 32412f9ef37SYunlei He new = __alloc_nat_entry(nid, false); 32512f9ef37SYunlei He if (!new) 32612f9ef37SYunlei He return; 32712f9ef37SYunlei He 32812f9ef37SYunlei He down_write(&nm_i->nat_tree_lock); 329e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 33012f9ef37SYunlei He if (!e) 33112f9ef37SYunlei He e = __init_nat_entry(nm_i, new, ne, false); 33212f9ef37SYunlei He else 3330c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 3340c0b471eSEric Biggers nat_get_blkaddr(e) != 3350c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 3361515aef0SChao Yu nat_get_version(e) != ne->version); 33712f9ef37SYunlei He up_write(&nm_i->nat_tree_lock); 33812f9ef37SYunlei He if (e != new) 33912f9ef37SYunlei He __free_nat_entry(new); 340e05df3b1SJaegeuk Kim } 341e05df3b1SJaegeuk Kim 342e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 343479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 344e05df3b1SJaegeuk Kim { 345e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 346e05df3b1SJaegeuk Kim struct nat_entry *e; 34712f9ef37SYunlei He struct nat_entry *new = __alloc_nat_entry(ni->nid, true); 3489be32d72SJaegeuk Kim 349b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 350e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 351e05df3b1SJaegeuk Kim if (!e) { 35212f9ef37SYunlei He e = __init_nat_entry(nm_i, new, NULL, true); 3535c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3549850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 355e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 356e05df3b1SJaegeuk Kim /* 357e05df3b1SJaegeuk Kim * when nid is reallocated, 358e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 359e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 360e05df3b1SJaegeuk Kim */ 3615c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3629850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 363e05df3b1SJaegeuk Kim } 36412f9ef37SYunlei He /* let's free early to reduce memory consumption */ 36512f9ef37SYunlei He if (e != new) 36612f9ef37SYunlei He __free_nat_entry(new); 367e05df3b1SJaegeuk Kim 368e05df3b1SJaegeuk Kim /* sanity check */ 3699850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3709850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 371e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3729850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 373e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3747b525dd0SChao Yu f2fs_bug_on(sbi, is_valid_blkaddr(nat_get_blkaddr(e)) && 375e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 376e05df3b1SJaegeuk Kim 377e1c42045Sarter97 /* increment version no as node is removed */ 378e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 379e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 380e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 381e05df3b1SJaegeuk Kim } 382e05df3b1SJaegeuk Kim 383e05df3b1SJaegeuk Kim /* change address */ 384e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 3857b525dd0SChao Yu if (!is_valid_blkaddr(new_blkaddr)) 38688bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 387e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 388479f40c4SJaegeuk Kim 389479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 390d5b692b7SChao Yu if (ni->nid != ni->ino) 391479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 39288bd02c9SJaegeuk Kim if (e) { 39388bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 39488bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 39588bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 39688bd02c9SJaegeuk Kim } 397b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 398e05df3b1SJaegeuk Kim } 399e05df3b1SJaegeuk Kim 4004d57b86dSChao Yu int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 401e05df3b1SJaegeuk Kim { 402e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 4031b38dc8eSJaegeuk Kim int nr = nr_shrink; 404e05df3b1SJaegeuk Kim 405b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 406b873b798SJaegeuk Kim return 0; 407e05df3b1SJaegeuk Kim 408e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 409e05df3b1SJaegeuk Kim struct nat_entry *ne; 410e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 411e05df3b1SJaegeuk Kim struct nat_entry, list); 412e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 413e05df3b1SJaegeuk Kim nr_shrink--; 414e05df3b1SJaegeuk Kim } 415b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 4161b38dc8eSJaegeuk Kim return nr - nr_shrink; 417e05df3b1SJaegeuk Kim } 418e05df3b1SJaegeuk Kim 4190a8165d7SJaegeuk Kim /* 420e1c42045Sarter97 * This function always returns success 421e05df3b1SJaegeuk Kim */ 4224d57b86dSChao Yu void f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 4234d57b86dSChao Yu struct node_info *ni) 424e05df3b1SJaegeuk Kim { 425e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 426e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 427b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 428e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 429e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 430e05df3b1SJaegeuk Kim struct page *page = NULL; 431e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 432e05df3b1SJaegeuk Kim struct nat_entry *e; 43366a82d1fSYunlei He pgoff_t index; 434e05df3b1SJaegeuk Kim int i; 435e05df3b1SJaegeuk Kim 436e05df3b1SJaegeuk Kim ni->nid = nid; 437e05df3b1SJaegeuk Kim 438e05df3b1SJaegeuk Kim /* Check nat cache */ 439b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 440e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 441e05df3b1SJaegeuk Kim if (e) { 442e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 443e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 444e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 445b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 446e05df3b1SJaegeuk Kim return; 4471515aef0SChao Yu } 448e05df3b1SJaegeuk Kim 4493547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 4503547ea96SJaegeuk Kim 451e05df3b1SJaegeuk Kim /* Check current segment summary */ 452b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 4534d57b86dSChao Yu i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 454e05df3b1SJaegeuk Kim if (i >= 0) { 455dfc08a12SChao Yu ne = nat_in_journal(journal, i); 456e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 457e05df3b1SJaegeuk Kim } 458b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 45966a82d1fSYunlei He if (i >= 0) { 46066a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 461e05df3b1SJaegeuk Kim goto cache; 46266a82d1fSYunlei He } 463e05df3b1SJaegeuk Kim 464e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 46566a82d1fSYunlei He index = current_nat_addr(sbi, nid); 46666a82d1fSYunlei He up_read(&nm_i->nat_tree_lock); 46766a82d1fSYunlei He 4684d57b86dSChao Yu page = f2fs_get_meta_page(sbi, index); 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); 476e05df3b1SJaegeuk Kim } 477e05df3b1SJaegeuk Kim 47879344efbSJaegeuk Kim /* 47979344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 48079344efbSJaegeuk Kim */ 4814d57b86dSChao Yu static void f2fs_ra_node_pages(struct page *parent, int start, int n) 48279344efbSJaegeuk Kim { 48379344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 48479344efbSJaegeuk Kim struct blk_plug plug; 48579344efbSJaegeuk Kim int i, end; 48679344efbSJaegeuk Kim nid_t nid; 48779344efbSJaegeuk Kim 48879344efbSJaegeuk Kim blk_start_plug(&plug); 48979344efbSJaegeuk Kim 49079344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 49179344efbSJaegeuk Kim end = start + n; 49279344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 49379344efbSJaegeuk Kim for (i = start; i < end; i++) { 49479344efbSJaegeuk Kim nid = get_nid(parent, i, false); 4954d57b86dSChao Yu f2fs_ra_node_page(sbi, nid); 49679344efbSJaegeuk Kim } 49779344efbSJaegeuk Kim 49879344efbSJaegeuk Kim blk_finish_plug(&plug); 49979344efbSJaegeuk Kim } 50079344efbSJaegeuk Kim 5014d57b86dSChao Yu pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 5023cf45747SChao Yu { 5033cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 5043cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 5053cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 5063cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 5073cf45747SChao Yu int cur_level = dn->cur_level; 5083cf45747SChao Yu int max_level = dn->max_level; 5093cf45747SChao Yu pgoff_t base = 0; 5103cf45747SChao Yu 5113cf45747SChao Yu if (!dn->max_level) 5123cf45747SChao Yu return pgofs + 1; 5133cf45747SChao Yu 5143cf45747SChao Yu while (max_level-- > cur_level) 5153cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 5163cf45747SChao Yu 5173cf45747SChao Yu switch (dn->max_level) { 5183cf45747SChao Yu case 3: 5193cf45747SChao Yu base += 2 * indirect_blks; 5203cf45747SChao Yu case 2: 5213cf45747SChao Yu base += 2 * direct_blks; 5223cf45747SChao Yu case 1: 5233cf45747SChao Yu base += direct_index; 5243cf45747SChao Yu break; 5253cf45747SChao Yu default: 5263cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 5273cf45747SChao Yu } 5283cf45747SChao Yu 5293cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 5303cf45747SChao Yu } 5313cf45747SChao Yu 5320a8165d7SJaegeuk Kim /* 533e05df3b1SJaegeuk Kim * The maximum depth is four. 534e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 535e05df3b1SJaegeuk Kim */ 53681ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 537de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 538e05df3b1SJaegeuk Kim { 53981ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 540e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 541e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 542e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 543e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 544e05df3b1SJaegeuk Kim int n = 0; 545e05df3b1SJaegeuk Kim int level = 0; 546e05df3b1SJaegeuk Kim 547e05df3b1SJaegeuk Kim noffset[0] = 0; 548e05df3b1SJaegeuk Kim 549e05df3b1SJaegeuk Kim if (block < direct_index) { 55025c0a6e5SNamjae Jeon offset[n] = block; 551e05df3b1SJaegeuk Kim goto got; 552e05df3b1SJaegeuk Kim } 553e05df3b1SJaegeuk Kim block -= direct_index; 554e05df3b1SJaegeuk Kim if (block < direct_blks) { 555e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 556e05df3b1SJaegeuk Kim noffset[n] = 1; 55725c0a6e5SNamjae Jeon offset[n] = block; 558e05df3b1SJaegeuk Kim level = 1; 559e05df3b1SJaegeuk Kim goto got; 560e05df3b1SJaegeuk Kim } 561e05df3b1SJaegeuk Kim block -= direct_blks; 562e05df3b1SJaegeuk Kim if (block < direct_blks) { 563e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 564e05df3b1SJaegeuk Kim noffset[n] = 2; 56525c0a6e5SNamjae Jeon offset[n] = block; 566e05df3b1SJaegeuk Kim level = 1; 567e05df3b1SJaegeuk Kim goto got; 568e05df3b1SJaegeuk Kim } 569e05df3b1SJaegeuk Kim block -= direct_blks; 570e05df3b1SJaegeuk Kim if (block < indirect_blks) { 571e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 572e05df3b1SJaegeuk Kim noffset[n] = 3; 573e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 574e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 57525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 576e05df3b1SJaegeuk Kim level = 2; 577e05df3b1SJaegeuk Kim goto got; 578e05df3b1SJaegeuk Kim } 579e05df3b1SJaegeuk Kim block -= indirect_blks; 580e05df3b1SJaegeuk Kim if (block < indirect_blks) { 581e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 582e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 583e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 584e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 58525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 586e05df3b1SJaegeuk Kim level = 2; 587e05df3b1SJaegeuk Kim goto got; 588e05df3b1SJaegeuk Kim } 589e05df3b1SJaegeuk Kim block -= indirect_blks; 590e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 591e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 592e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 593e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 594e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 595e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 596e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 597e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 598e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 599e05df3b1SJaegeuk Kim offset[n - 1]; 60025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 601e05df3b1SJaegeuk Kim level = 3; 602e05df3b1SJaegeuk Kim goto got; 603e05df3b1SJaegeuk Kim } else { 604adb6dc19SJaegeuk Kim return -E2BIG; 605e05df3b1SJaegeuk Kim } 606e05df3b1SJaegeuk Kim got: 607e05df3b1SJaegeuk Kim return level; 608e05df3b1SJaegeuk Kim } 609e05df3b1SJaegeuk Kim 610e05df3b1SJaegeuk Kim /* 611e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 6124f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 6134f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 61439936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 615e05df3b1SJaegeuk Kim */ 6164d57b86dSChao Yu int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 617e05df3b1SJaegeuk Kim { 6184081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 619e05df3b1SJaegeuk Kim struct page *npage[4]; 620f1a3b98eSJaegeuk Kim struct page *parent = NULL; 621e05df3b1SJaegeuk Kim int offset[4]; 622e05df3b1SJaegeuk Kim unsigned int noffset[4]; 623e05df3b1SJaegeuk Kim nid_t nids[4]; 6243cf45747SChao Yu int level, i = 0; 625e05df3b1SJaegeuk Kim int err = 0; 626e05df3b1SJaegeuk Kim 62781ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 628adb6dc19SJaegeuk Kim if (level < 0) 629adb6dc19SJaegeuk Kim return level; 630e05df3b1SJaegeuk Kim 631e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 6321646cfacSJaegeuk Kim npage[0] = dn->inode_page; 6331646cfacSJaegeuk Kim 6341646cfacSJaegeuk Kim if (!npage[0]) { 6354d57b86dSChao Yu npage[0] = f2fs_get_node_page(sbi, nids[0]); 636e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 637e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 6381646cfacSJaegeuk Kim } 639f1a3b98eSJaegeuk Kim 640f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 641f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 64276629165SJaegeuk Kim err = -ENOENT; 643f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 644f1a3b98eSJaegeuk Kim goto release_out; 645f1a3b98eSJaegeuk Kim } 646f1a3b98eSJaegeuk Kim 647e05df3b1SJaegeuk Kim parent = npage[0]; 64852c2db3fSChangman Lee if (level != 0) 649e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 650e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 651e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 652e05df3b1SJaegeuk Kim 653e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 654e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 655e05df3b1SJaegeuk Kim bool done = false; 656e05df3b1SJaegeuk Kim 657266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 658e05df3b1SJaegeuk Kim /* alloc new node */ 6594d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &(nids[i]))) { 660e05df3b1SJaegeuk Kim err = -ENOSPC; 661e05df3b1SJaegeuk Kim goto release_pages; 662e05df3b1SJaegeuk Kim } 663e05df3b1SJaegeuk Kim 664e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6654d57b86dSChao Yu npage[i] = f2fs_new_node_page(dn, noffset[i]); 666e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 6674d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, nids[i]); 668e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 669e05df3b1SJaegeuk Kim goto release_pages; 670e05df3b1SJaegeuk Kim } 671e05df3b1SJaegeuk Kim 672e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 6734d57b86dSChao Yu f2fs_alloc_nid_done(sbi, nids[i]); 674e05df3b1SJaegeuk Kim done = true; 675266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 6764d57b86dSChao Yu npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); 677e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 678e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 679e05df3b1SJaegeuk Kim goto release_pages; 680e05df3b1SJaegeuk Kim } 681e05df3b1SJaegeuk Kim done = true; 682e05df3b1SJaegeuk Kim } 683e05df3b1SJaegeuk Kim if (i == 1) { 684e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 685e05df3b1SJaegeuk Kim unlock_page(parent); 686e05df3b1SJaegeuk Kim } else { 687e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 688e05df3b1SJaegeuk Kim } 689e05df3b1SJaegeuk Kim 690e05df3b1SJaegeuk Kim if (!done) { 6914d57b86dSChao Yu npage[i] = f2fs_get_node_page(sbi, nids[i]); 692e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 693e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 694e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 695e05df3b1SJaegeuk Kim goto release_out; 696e05df3b1SJaegeuk Kim } 697e05df3b1SJaegeuk Kim } 698e05df3b1SJaegeuk Kim if (i < level) { 699e05df3b1SJaegeuk Kim parent = npage[i]; 700e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 701e05df3b1SJaegeuk Kim } 702e05df3b1SJaegeuk Kim } 703e05df3b1SJaegeuk Kim dn->nid = nids[level]; 704e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 705e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 7067a2af766SChao Yu dn->data_blkaddr = datablock_addr(dn->inode, 7077a2af766SChao Yu dn->node_page, dn->ofs_in_node); 708e05df3b1SJaegeuk Kim return 0; 709e05df3b1SJaegeuk Kim 710e05df3b1SJaegeuk Kim release_pages: 711e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 712e05df3b1SJaegeuk Kim if (i > 1) 713e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 714e05df3b1SJaegeuk Kim release_out: 715e05df3b1SJaegeuk Kim dn->inode_page = NULL; 716e05df3b1SJaegeuk Kim dn->node_page = NULL; 7173cf45747SChao Yu if (err == -ENOENT) { 7183cf45747SChao Yu dn->cur_level = i; 7193cf45747SChao Yu dn->max_level = level; 7200a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 7213cf45747SChao Yu } 722e05df3b1SJaegeuk Kim return err; 723e05df3b1SJaegeuk Kim } 724e05df3b1SJaegeuk Kim 725e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 726e05df3b1SJaegeuk Kim { 7274081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 728e05df3b1SJaegeuk Kim struct node_info ni; 729e05df3b1SJaegeuk Kim 7304d57b86dSChao Yu f2fs_get_node_info(sbi, dn->nid, &ni); 731e05df3b1SJaegeuk Kim 732e05df3b1SJaegeuk Kim /* Deallocate node address */ 7334d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 734000519f2SChao Yu dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); 735479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 736e05df3b1SJaegeuk Kim 737e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 7384d57b86dSChao Yu f2fs_remove_orphan_inode(sbi, dn->nid); 739e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 7400f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 741e05df3b1SJaegeuk Kim } 742000519f2SChao Yu 743e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 744caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 745e05df3b1SJaegeuk Kim 746e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 747bf39c00aSJaegeuk Kim 748bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 749bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 750bf39c00aSJaegeuk Kim 751e05df3b1SJaegeuk Kim dn->node_page = NULL; 75251dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 753e05df3b1SJaegeuk Kim } 754e05df3b1SJaegeuk Kim 755e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 756e05df3b1SJaegeuk Kim { 757e05df3b1SJaegeuk Kim struct page *page; 758e05df3b1SJaegeuk Kim 759e05df3b1SJaegeuk Kim if (dn->nid == 0) 760e05df3b1SJaegeuk Kim return 1; 761e05df3b1SJaegeuk Kim 762e05df3b1SJaegeuk Kim /* get direct node */ 7634d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 764e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 765e05df3b1SJaegeuk Kim return 1; 766e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 767e05df3b1SJaegeuk Kim return PTR_ERR(page); 768e05df3b1SJaegeuk Kim 769e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 770e05df3b1SJaegeuk Kim dn->node_page = page; 771e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 7724d57b86dSChao Yu f2fs_truncate_data_blocks(dn); 773e05df3b1SJaegeuk Kim truncate_node(dn); 774e05df3b1SJaegeuk Kim return 1; 775e05df3b1SJaegeuk Kim } 776e05df3b1SJaegeuk Kim 777e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 778e05df3b1SJaegeuk Kim int ofs, int depth) 779e05df3b1SJaegeuk Kim { 780e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 781e05df3b1SJaegeuk Kim struct page *page; 782e05df3b1SJaegeuk Kim struct f2fs_node *rn; 783e05df3b1SJaegeuk Kim nid_t child_nid; 784e05df3b1SJaegeuk Kim unsigned int child_nofs; 785e05df3b1SJaegeuk Kim int freed = 0; 786e05df3b1SJaegeuk Kim int i, ret; 787e05df3b1SJaegeuk Kim 788e05df3b1SJaegeuk Kim if (dn->nid == 0) 789e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 790e05df3b1SJaegeuk Kim 79151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 79251dd6249SNamjae Jeon 7934d57b86dSChao Yu page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); 79451dd6249SNamjae Jeon if (IS_ERR(page)) { 79551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 796e05df3b1SJaegeuk Kim return PTR_ERR(page); 79751dd6249SNamjae Jeon } 798e05df3b1SJaegeuk Kim 7994d57b86dSChao Yu f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); 80079344efbSJaegeuk Kim 80145590710SGu Zheng rn = F2FS_NODE(page); 802e05df3b1SJaegeuk Kim if (depth < 3) { 803e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 804e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 805e05df3b1SJaegeuk Kim if (child_nid == 0) 806e05df3b1SJaegeuk Kim continue; 807e05df3b1SJaegeuk Kim rdn.nid = child_nid; 808e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 809e05df3b1SJaegeuk Kim if (ret < 0) 810e05df3b1SJaegeuk Kim goto out_err; 81112719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 81293bae099SJaegeuk Kim dn->node_changed = true; 813e05df3b1SJaegeuk Kim } 814e05df3b1SJaegeuk Kim } else { 815e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 816e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 817e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 818e05df3b1SJaegeuk Kim if (child_nid == 0) { 819e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 820e05df3b1SJaegeuk Kim continue; 821e05df3b1SJaegeuk Kim } 822e05df3b1SJaegeuk Kim rdn.nid = child_nid; 823e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 824e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 82512719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 82693bae099SJaegeuk Kim dn->node_changed = true; 827e05df3b1SJaegeuk Kim child_nofs += ret; 828e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 829e05df3b1SJaegeuk Kim goto out_err; 830e05df3b1SJaegeuk Kim } 831e05df3b1SJaegeuk Kim } 832e05df3b1SJaegeuk Kim freed = child_nofs; 833e05df3b1SJaegeuk Kim } 834e05df3b1SJaegeuk Kim 835e05df3b1SJaegeuk Kim if (!ofs) { 836e05df3b1SJaegeuk Kim /* remove current indirect node */ 837e05df3b1SJaegeuk Kim dn->node_page = page; 838e05df3b1SJaegeuk Kim truncate_node(dn); 839e05df3b1SJaegeuk Kim freed++; 840e05df3b1SJaegeuk Kim } else { 841e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 842e05df3b1SJaegeuk Kim } 84351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 844e05df3b1SJaegeuk Kim return freed; 845e05df3b1SJaegeuk Kim 846e05df3b1SJaegeuk Kim out_err: 847e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 84851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 849e05df3b1SJaegeuk Kim return ret; 850e05df3b1SJaegeuk Kim } 851e05df3b1SJaegeuk Kim 852e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 853e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 854e05df3b1SJaegeuk Kim { 855e05df3b1SJaegeuk Kim struct page *pages[2]; 856e05df3b1SJaegeuk Kim nid_t nid[3]; 857e05df3b1SJaegeuk Kim nid_t child_nid; 858e05df3b1SJaegeuk Kim int err = 0; 859e05df3b1SJaegeuk Kim int i; 860e05df3b1SJaegeuk Kim int idx = depth - 2; 861e05df3b1SJaegeuk Kim 862e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 863e05df3b1SJaegeuk Kim if (!nid[0]) 864e05df3b1SJaegeuk Kim return 0; 865e05df3b1SJaegeuk Kim 866e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 867a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 868e1c42045Sarter97 /* reference count'll be increased */ 8694d57b86dSChao Yu pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); 870e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 871e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 872a225dca3Sshifei10.ge idx = i - 1; 873e05df3b1SJaegeuk Kim goto fail; 874e05df3b1SJaegeuk Kim } 875e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 876e05df3b1SJaegeuk Kim } 877e05df3b1SJaegeuk Kim 8784d57b86dSChao Yu f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 87979344efbSJaegeuk Kim 880e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 881a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 882e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 883e05df3b1SJaegeuk Kim if (!child_nid) 884e05df3b1SJaegeuk Kim continue; 885e05df3b1SJaegeuk Kim dn->nid = child_nid; 886e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 887e05df3b1SJaegeuk Kim if (err < 0) 888e05df3b1SJaegeuk Kim goto fail; 88912719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 89093bae099SJaegeuk Kim dn->node_changed = true; 891e05df3b1SJaegeuk Kim } 892e05df3b1SJaegeuk Kim 893a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 894e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 895e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 896e05df3b1SJaegeuk Kim truncate_node(dn); 897e05df3b1SJaegeuk Kim } else { 898e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 899e05df3b1SJaegeuk Kim } 900e05df3b1SJaegeuk Kim offset[idx]++; 901a225dca3Sshifei10.ge offset[idx + 1] = 0; 902a225dca3Sshifei10.ge idx--; 903e05df3b1SJaegeuk Kim fail: 904a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 905e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 90651dd6249SNamjae Jeon 90751dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 90851dd6249SNamjae Jeon 909e05df3b1SJaegeuk Kim return err; 910e05df3b1SJaegeuk Kim } 911e05df3b1SJaegeuk Kim 9120a8165d7SJaegeuk Kim /* 913e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 914e05df3b1SJaegeuk Kim */ 9154d57b86dSChao Yu int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) 916e05df3b1SJaegeuk Kim { 9174081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 918e05df3b1SJaegeuk Kim int err = 0, cont = 1; 919e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 9207dd690c8SJaegeuk Kim unsigned int nofs = 0; 92158bfaf44SJaegeuk Kim struct f2fs_inode *ri; 922e05df3b1SJaegeuk Kim struct dnode_of_data dn; 923e05df3b1SJaegeuk Kim struct page *page; 924e05df3b1SJaegeuk Kim 92551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 92651dd6249SNamjae Jeon 92781ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 928adb6dc19SJaegeuk Kim if (level < 0) 929adb6dc19SJaegeuk Kim return level; 930ff373558SJaegeuk Kim 9314d57b86dSChao Yu page = f2fs_get_node_page(sbi, inode->i_ino); 93251dd6249SNamjae Jeon if (IS_ERR(page)) { 93351dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 934e05df3b1SJaegeuk Kim return PTR_ERR(page); 93551dd6249SNamjae Jeon } 936e05df3b1SJaegeuk Kim 937e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 938e05df3b1SJaegeuk Kim unlock_page(page); 939e05df3b1SJaegeuk Kim 94058bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 941e05df3b1SJaegeuk Kim switch (level) { 942e05df3b1SJaegeuk Kim case 0: 943e05df3b1SJaegeuk Kim case 1: 944e05df3b1SJaegeuk Kim nofs = noffset[1]; 945e05df3b1SJaegeuk Kim break; 946e05df3b1SJaegeuk Kim case 2: 947e05df3b1SJaegeuk Kim nofs = noffset[1]; 948e05df3b1SJaegeuk Kim if (!offset[level - 1]) 949e05df3b1SJaegeuk Kim goto skip_partial; 95058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 951e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 952e05df3b1SJaegeuk Kim goto fail; 953e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 954e05df3b1SJaegeuk Kim break; 955e05df3b1SJaegeuk Kim case 3: 956e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 957e05df3b1SJaegeuk Kim if (!offset[level - 1]) 958e05df3b1SJaegeuk Kim goto skip_partial; 95958bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 960e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 961e05df3b1SJaegeuk Kim goto fail; 962e05df3b1SJaegeuk Kim break; 963e05df3b1SJaegeuk Kim default: 964e05df3b1SJaegeuk Kim BUG(); 965e05df3b1SJaegeuk Kim } 966e05df3b1SJaegeuk Kim 967e05df3b1SJaegeuk Kim skip_partial: 968e05df3b1SJaegeuk Kim while (cont) { 96958bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 970e05df3b1SJaegeuk Kim switch (offset[0]) { 971e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 972e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 973e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 974e05df3b1SJaegeuk Kim break; 975e05df3b1SJaegeuk Kim 976e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 977e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 978e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 979e05df3b1SJaegeuk Kim break; 980e05df3b1SJaegeuk Kim 981e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 982e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 983e05df3b1SJaegeuk Kim cont = 0; 984e05df3b1SJaegeuk Kim break; 985e05df3b1SJaegeuk Kim 986e05df3b1SJaegeuk Kim default: 987e05df3b1SJaegeuk Kim BUG(); 988e05df3b1SJaegeuk Kim } 989e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 990e05df3b1SJaegeuk Kim goto fail; 991e05df3b1SJaegeuk Kim if (offset[1] == 0 && 99258bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 993e05df3b1SJaegeuk Kim lock_page(page); 994ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 995fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 99658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 997e05df3b1SJaegeuk Kim set_page_dirty(page); 998e05df3b1SJaegeuk Kim unlock_page(page); 999e05df3b1SJaegeuk Kim } 1000e05df3b1SJaegeuk Kim offset[1] = 0; 1001e05df3b1SJaegeuk Kim offset[0]++; 1002e05df3b1SJaegeuk Kim nofs += err; 1003e05df3b1SJaegeuk Kim } 1004e05df3b1SJaegeuk Kim fail: 1005e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 100651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 1007e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 1008e05df3b1SJaegeuk Kim } 1009e05df3b1SJaegeuk Kim 10109c77f754SJaegeuk Kim /* caller must lock inode page */ 10114d57b86dSChao Yu int f2fs_truncate_xattr_node(struct inode *inode) 10124f16fb0fSJaegeuk Kim { 10134081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 10144f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 10154f16fb0fSJaegeuk Kim struct dnode_of_data dn; 10164f16fb0fSJaegeuk Kim struct page *npage; 10174f16fb0fSJaegeuk Kim 10184f16fb0fSJaegeuk Kim if (!nid) 10194f16fb0fSJaegeuk Kim return 0; 10204f16fb0fSJaegeuk Kim 10214d57b86dSChao Yu npage = f2fs_get_node_page(sbi, nid); 10224f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 10234f16fb0fSJaegeuk Kim return PTR_ERR(npage); 10244f16fb0fSJaegeuk Kim 1025205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 102665985d93SJaegeuk Kim 10279c77f754SJaegeuk Kim set_new_dnode(&dn, inode, NULL, npage, nid); 10284f16fb0fSJaegeuk Kim truncate_node(&dn); 10294f16fb0fSJaegeuk Kim return 0; 10304f16fb0fSJaegeuk Kim } 10314f16fb0fSJaegeuk Kim 103239936837SJaegeuk Kim /* 10334f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 10344f4124d0SChao Yu * f2fs_unlock_op(). 103539936837SJaegeuk Kim */ 10364d57b86dSChao Yu int f2fs_remove_inode_page(struct inode *inode) 1037e05df3b1SJaegeuk Kim { 1038e05df3b1SJaegeuk Kim struct dnode_of_data dn; 103913ec7297SChao Yu int err; 1040e05df3b1SJaegeuk Kim 1041c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 10424d57b86dSChao Yu err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 104313ec7297SChao Yu if (err) 104413ec7297SChao Yu return err; 1045e05df3b1SJaegeuk Kim 10464d57b86dSChao Yu err = f2fs_truncate_xattr_node(inode); 104713ec7297SChao Yu if (err) { 1048c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 104913ec7297SChao Yu return err; 1050e05df3b1SJaegeuk Kim } 1051c2e69583SJaegeuk Kim 1052c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 1053c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1054c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 10554d57b86dSChao Yu f2fs_truncate_data_blocks_range(&dn, 1); 1056c2e69583SJaegeuk Kim 1057e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10589850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10590eb0adadSChao Yu inode->i_blocks != 0 && inode->i_blocks != 8); 1060c2e69583SJaegeuk Kim 1061c2e69583SJaegeuk Kim /* will put inode & node pages */ 1062e05df3b1SJaegeuk Kim truncate_node(&dn); 106313ec7297SChao Yu return 0; 1064e05df3b1SJaegeuk Kim } 1065e05df3b1SJaegeuk Kim 10664d57b86dSChao Yu struct page *f2fs_new_inode_page(struct inode *inode) 1067e05df3b1SJaegeuk Kim { 1068e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1069e05df3b1SJaegeuk Kim 1070e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1071e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 107244a83ff6SJaegeuk Kim 107344a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10744d57b86dSChao Yu return f2fs_new_node_page(&dn, 0); 1075e05df3b1SJaegeuk Kim } 1076e05df3b1SJaegeuk Kim 10774d57b86dSChao Yu struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) 1078e05df3b1SJaegeuk Kim { 10794081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 108025cc5d3bSJaegeuk Kim struct node_info new_ni; 1081e05df3b1SJaegeuk Kim struct page *page; 1082e05df3b1SJaegeuk Kim int err; 1083e05df3b1SJaegeuk Kim 108491942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1085e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1086e05df3b1SJaegeuk Kim 1087300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1088e05df3b1SJaegeuk Kim if (!page) 1089e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1090e05df3b1SJaegeuk Kim 10910abd675eSChao Yu if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) 10929c02740cSJaegeuk Kim goto fail; 10930abd675eSChao Yu 109425cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 10954d57b86dSChao Yu f2fs_get_node_info(sbi, dn->nid, &new_ni); 109625cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 109725cc5d3bSJaegeuk Kim #endif 109825cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1099e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 110025cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 110125cc5d3bSJaegeuk Kim new_ni.flag = 0; 110225cc5d3bSJaegeuk Kim new_ni.version = 0; 1103479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 11049c02740cSJaegeuk Kim 1105fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 11069c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1107c5667575SChao Yu set_cold_node(page, S_ISDIR(dn->inode->i_mode)); 1108237c0790SJaegeuk Kim if (!PageUptodate(page)) 11099c02740cSJaegeuk Kim SetPageUptodate(page); 111012719ae1SJaegeuk Kim if (set_page_dirty(page)) 111112719ae1SJaegeuk Kim dn->node_changed = true; 1112e05df3b1SJaegeuk Kim 11134bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1114205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1115479bd73aSJaegeuk Kim 1116e05df3b1SJaegeuk Kim if (ofs == 0) 1117e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1118e05df3b1SJaegeuk Kim return page; 1119e05df3b1SJaegeuk Kim 1120e05df3b1SJaegeuk Kim fail: 112171e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1122e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1123e05df3b1SJaegeuk Kim return ERR_PTR(err); 1124e05df3b1SJaegeuk Kim } 1125e05df3b1SJaegeuk Kim 112656ae674cSJaegeuk Kim /* 112756ae674cSJaegeuk Kim * Caller should do after getting the following values. 112856ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 112986531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 113056ae674cSJaegeuk Kim */ 113104d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1132e05df3b1SJaegeuk Kim { 11334081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1134e05df3b1SJaegeuk Kim struct node_info ni; 1135cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 113605ca3632SJaegeuk Kim .sbi = sbi, 1137cf04e8ebSJaegeuk Kim .type = NODE, 113804d328deSMike Christie .op = REQ_OP_READ, 113904d328deSMike Christie .op_flags = op_flags, 114005ca3632SJaegeuk Kim .page = page, 11414375a336SJaegeuk Kim .encrypted_page = NULL, 1142cf04e8ebSJaegeuk Kim }; 1143e05df3b1SJaegeuk Kim 114454c55c4eSWeichao Guo if (PageUptodate(page)) { 114554c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 114654c55c4eSWeichao Guo f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page)); 114754c55c4eSWeichao Guo #endif 11483bdad3c7SJaegeuk Kim return LOCKED_PAGE; 114954c55c4eSWeichao Guo } 11503bdad3c7SJaegeuk Kim 11514d57b86dSChao Yu f2fs_get_node_info(sbi, page->index, &ni); 1152e05df3b1SJaegeuk Kim 115383a3bfdbSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR) || 115483a3bfdbSJaegeuk Kim is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { 11552bca1e23SJaegeuk Kim ClearPageUptodate(page); 1156e05df3b1SJaegeuk Kim return -ENOENT; 1157393ff91fSJaegeuk Kim } 1158393ff91fSJaegeuk Kim 11597a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 116005ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1161e05df3b1SJaegeuk Kim } 1162e05df3b1SJaegeuk Kim 11630a8165d7SJaegeuk Kim /* 1164e05df3b1SJaegeuk Kim * Readahead a node page 1165e05df3b1SJaegeuk Kim */ 11664d57b86dSChao Yu void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1167e05df3b1SJaegeuk Kim { 1168e05df3b1SJaegeuk Kim struct page *apage; 116956ae674cSJaegeuk Kim int err; 1170e05df3b1SJaegeuk Kim 1171e8458725SChao Yu if (!nid) 1172e8458725SChao Yu return; 11734d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1174a4f843bdSJaegeuk Kim return; 1175e8458725SChao Yu 1176999270deSFan Li rcu_read_lock(); 1177b93b0163SMatthew Wilcox apage = radix_tree_lookup(&NODE_MAPPING(sbi)->i_pages, nid); 1178999270deSFan Li rcu_read_unlock(); 1179999270deSFan Li if (apage) 1180393ff91fSJaegeuk Kim return; 1181e05df3b1SJaegeuk Kim 1182300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1183e05df3b1SJaegeuk Kim if (!apage) 1184e05df3b1SJaegeuk Kim return; 1185e05df3b1SJaegeuk Kim 118670246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 118786531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1188e05df3b1SJaegeuk Kim } 1189e05df3b1SJaegeuk Kim 119017a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11910e022ea8SChao Yu struct page *parent, int start) 1192e05df3b1SJaegeuk Kim { 119356ae674cSJaegeuk Kim struct page *page; 119456ae674cSJaegeuk Kim int err; 11954aa69d56SJaegeuk Kim 11964aa69d56SJaegeuk Kim if (!nid) 11974aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11984d57b86dSChao Yu if (f2fs_check_nid_range(sbi, nid)) 1199a4f843bdSJaegeuk Kim return ERR_PTR(-EINVAL); 1200afcb7ca0SJaegeuk Kim repeat: 1201300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1202e05df3b1SJaegeuk Kim if (!page) 1203e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1204e05df3b1SJaegeuk Kim 120570fd7614SChristoph Hellwig err = read_node_page(page, 0); 120686531d6bSJaegeuk Kim if (err < 0) { 120786531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1208e05df3b1SJaegeuk Kim return ERR_PTR(err); 1209e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 12101f258ec1SChao Yu err = 0; 1211e1c51b9fSChao Yu goto page_hit; 121286531d6bSJaegeuk Kim } 1213aaf96075SJaegeuk Kim 12140e022ea8SChao Yu if (parent) 12154d57b86dSChao Yu f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); 12160e022ea8SChao Yu 1217e1c51b9fSChao Yu lock_page(page); 1218e1c51b9fSChao Yu 12194ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1220afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1221afcb7ca0SJaegeuk Kim goto repeat; 1222afcb7ca0SJaegeuk Kim } 12231563ac75SChao Yu 12241f258ec1SChao Yu if (unlikely(!PageUptodate(page))) { 12251f258ec1SChao Yu err = -EIO; 12261563ac75SChao Yu goto out_err; 12271f258ec1SChao Yu } 1228704956ecSChao Yu 1229704956ecSChao Yu if (!f2fs_inode_chksum_verify(sbi, page)) { 1230704956ecSChao Yu err = -EBADMSG; 1231704956ecSChao Yu goto out_err; 1232704956ecSChao Yu } 1233e1c51b9fSChao Yu page_hit: 12340c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 12351f258ec1SChao Yu f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " 12361f258ec1SChao Yu "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", 12371f258ec1SChao Yu nid, nid_of_node(page), ino_of_node(page), 12381f258ec1SChao Yu ofs_of_node(page), cpver_of_node(page), 12391f258ec1SChao Yu next_blkaddr_of_node(page)); 12401f258ec1SChao Yu err = -EINVAL; 12410c9df7fbSYunlong Song out_err: 1242ee605234SJaegeuk Kim ClearPageUptodate(page); 12430c9df7fbSYunlong Song f2fs_put_page(page, 1); 12441f258ec1SChao Yu return ERR_PTR(err); 12450c9df7fbSYunlong Song } 1246e05df3b1SJaegeuk Kim return page; 1247e05df3b1SJaegeuk Kim } 1248e05df3b1SJaegeuk Kim 12494d57b86dSChao Yu struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 12500e022ea8SChao Yu { 12510e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 12520e022ea8SChao Yu } 12530e022ea8SChao Yu 12544d57b86dSChao Yu struct page *f2fs_get_node_page_ra(struct page *parent, int start) 1255e05df3b1SJaegeuk Kim { 12564081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 12570e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1258e05df3b1SJaegeuk Kim 12590e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1260e05df3b1SJaegeuk Kim } 1261e05df3b1SJaegeuk Kim 12622049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 12632049d4fcSJaegeuk Kim { 12642049d4fcSJaegeuk Kim struct inode *inode; 12652049d4fcSJaegeuk Kim struct page *page; 12660f3311a8SChao Yu int ret; 12672049d4fcSJaegeuk Kim 12682049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 12692049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 12702049d4fcSJaegeuk Kim if (!inode) 12712049d4fcSJaegeuk Kim return; 12722049d4fcSJaegeuk Kim 127301eccef7SChao Yu page = f2fs_pagecache_get_page(inode->i_mapping, 0, 127401eccef7SChao Yu FGP_LOCK|FGP_NOWAIT, 0); 12752049d4fcSJaegeuk Kim if (!page) 12762049d4fcSJaegeuk Kim goto iput_out; 12772049d4fcSJaegeuk Kim 12782049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12792049d4fcSJaegeuk Kim goto page_out; 12802049d4fcSJaegeuk Kim 12812049d4fcSJaegeuk Kim if (!PageDirty(page)) 12822049d4fcSJaegeuk Kim goto page_out; 12832049d4fcSJaegeuk Kim 12842049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12852049d4fcSJaegeuk Kim goto page_out; 12862049d4fcSJaegeuk Kim 12870f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12882049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 12894d57b86dSChao Yu f2fs_remove_dirty_inode(inode); 12900f3311a8SChao Yu if (ret) 12912049d4fcSJaegeuk Kim set_page_dirty(page); 12922049d4fcSJaegeuk Kim page_out: 12934a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12942049d4fcSJaegeuk Kim iput_out: 12952049d4fcSJaegeuk Kim iput(inode); 12962049d4fcSJaegeuk Kim } 12972049d4fcSJaegeuk Kim 1298608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1299e05df3b1SJaegeuk Kim { 1300028a63a6SJan Kara pgoff_t index; 1301e05df3b1SJaegeuk Kim struct pagevec pvec; 1302608514deSJaegeuk Kim struct page *last_page = NULL; 1303028a63a6SJan Kara int nr_pages; 130452681375SJaegeuk Kim 130586679820SMel Gorman pagevec_init(&pvec); 130652681375SJaegeuk Kim index = 0; 130752681375SJaegeuk Kim 1308028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 130967fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1310028a63a6SJan Kara int i; 131152681375SJaegeuk Kim 131252681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 131352681375SJaegeuk Kim struct page *page = pvec.pages[i]; 131452681375SJaegeuk Kim 131552681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1316608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 131752681375SJaegeuk Kim pagevec_release(&pvec); 1318608514deSJaegeuk Kim return ERR_PTR(-EIO); 131952681375SJaegeuk Kim } 132052681375SJaegeuk Kim 132152681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 132252681375SJaegeuk Kim continue; 132352681375SJaegeuk Kim if (ino_of_node(page) != ino) 132452681375SJaegeuk Kim continue; 132552681375SJaegeuk Kim 132652681375SJaegeuk Kim lock_page(page); 132752681375SJaegeuk Kim 132852681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 132952681375SJaegeuk Kim continue_unlock: 133052681375SJaegeuk Kim unlock_page(page); 133152681375SJaegeuk Kim continue; 133252681375SJaegeuk Kim } 133352681375SJaegeuk Kim if (ino_of_node(page) != ino) 133452681375SJaegeuk Kim goto continue_unlock; 133552681375SJaegeuk Kim 133652681375SJaegeuk Kim if (!PageDirty(page)) { 133752681375SJaegeuk Kim /* someone wrote it for us */ 133852681375SJaegeuk Kim goto continue_unlock; 133952681375SJaegeuk Kim } 134052681375SJaegeuk Kim 1341608514deSJaegeuk Kim if (last_page) 1342608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1343608514deSJaegeuk Kim 1344608514deSJaegeuk Kim get_page(page); 1345608514deSJaegeuk Kim last_page = page; 1346608514deSJaegeuk Kim unlock_page(page); 1347608514deSJaegeuk Kim } 1348608514deSJaegeuk Kim pagevec_release(&pvec); 1349608514deSJaegeuk Kim cond_resched(); 1350608514deSJaegeuk Kim } 1351608514deSJaegeuk Kim return last_page; 1352608514deSJaegeuk Kim } 1353608514deSJaegeuk Kim 1354d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1355b0af6d49SChao Yu struct writeback_control *wbc, bool do_balance, 1356b0af6d49SChao Yu enum iostat_type io_type) 1357faa24895SJaegeuk Kim { 1358faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1359faa24895SJaegeuk Kim nid_t nid; 1360faa24895SJaegeuk Kim struct node_info ni; 1361faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1362faa24895SJaegeuk Kim .sbi = sbi, 136339d787beSChao Yu .ino = ino_of_node(page), 1364faa24895SJaegeuk Kim .type = NODE, 1365faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1366faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1367faa24895SJaegeuk Kim .page = page, 1368faa24895SJaegeuk Kim .encrypted_page = NULL, 1369d68f735bSJaegeuk Kim .submitted = false, 1370b0af6d49SChao Yu .io_type = io_type, 1371578c6478SYufen Yu .io_wbc = wbc, 1372faa24895SJaegeuk Kim }; 1373faa24895SJaegeuk Kim 1374faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1375faa24895SJaegeuk Kim 1376868de613SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1377868de613SJaegeuk Kim goto redirty_out; 1378db198ae0SChao Yu 1379faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1380faa24895SJaegeuk Kim goto redirty_out; 1381faa24895SJaegeuk Kim 1382faa24895SJaegeuk Kim /* get old block addr of this node page */ 1383faa24895SJaegeuk Kim nid = nid_of_node(page); 1384faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1385faa24895SJaegeuk Kim 1386faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1387faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1388faa24895SJaegeuk Kim goto redirty_out; 1389faa24895SJaegeuk Kim } else { 1390faa24895SJaegeuk Kim down_read(&sbi->node_write); 1391faa24895SJaegeuk Kim } 1392faa24895SJaegeuk Kim 13934d57b86dSChao Yu f2fs_get_node_info(sbi, nid, &ni); 1394faa24895SJaegeuk Kim 1395faa24895SJaegeuk Kim /* This page is already truncated */ 1396faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1397faa24895SJaegeuk Kim ClearPageUptodate(page); 1398faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1399faa24895SJaegeuk Kim up_read(&sbi->node_write); 1400faa24895SJaegeuk Kim unlock_page(page); 1401faa24895SJaegeuk Kim return 0; 1402faa24895SJaegeuk Kim } 1403faa24895SJaegeuk Kim 1404e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1405e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1406e7c75ab0SJaegeuk Kim 1407faa24895SJaegeuk Kim set_page_writeback(page); 140817c50035SJaegeuk Kim ClearPageError(page); 1409faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 14104d57b86dSChao Yu f2fs_do_write_node_page(nid, &fio); 1411faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1412faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1413faa24895SJaegeuk Kim up_read(&sbi->node_write); 1414faa24895SJaegeuk Kim 1415d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1416b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, 1417b9109b0eSJaegeuk Kim page->index, NODE); 1418d68f735bSJaegeuk Kim submitted = NULL; 1419d68f735bSJaegeuk Kim } 1420faa24895SJaegeuk Kim 1421faa24895SJaegeuk Kim unlock_page(page); 1422faa24895SJaegeuk Kim 1423d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1424b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1425d68f735bSJaegeuk Kim submitted = NULL; 1426d68f735bSJaegeuk Kim } 1427d68f735bSJaegeuk Kim if (submitted) 1428d68f735bSJaegeuk Kim *submitted = fio.submitted; 1429faa24895SJaegeuk Kim 1430401db79fSYunlong Song if (do_balance) 1431401db79fSYunlong Song f2fs_balance_fs(sbi, false); 1432faa24895SJaegeuk Kim return 0; 1433faa24895SJaegeuk Kim 1434faa24895SJaegeuk Kim redirty_out: 1435faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1436faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1437faa24895SJaegeuk Kim } 1438faa24895SJaegeuk Kim 14394d57b86dSChao Yu void f2fs_move_node_page(struct page *node_page, int gc_type) 1440f15194fcSYunlei He { 1441f15194fcSYunlei He if (gc_type == FG_GC) { 1442f15194fcSYunlei He struct writeback_control wbc = { 1443f15194fcSYunlei He .sync_mode = WB_SYNC_ALL, 1444f15194fcSYunlei He .nr_to_write = 1, 1445f15194fcSYunlei He .for_reclaim = 0, 1446f15194fcSYunlei He }; 1447f15194fcSYunlei He 1448f15194fcSYunlei He set_page_dirty(node_page); 1449f15194fcSYunlei He f2fs_wait_on_page_writeback(node_page, NODE, true); 1450f15194fcSYunlei He 1451f15194fcSYunlei He f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); 1452f15194fcSYunlei He if (!clear_page_dirty_for_io(node_page)) 1453f15194fcSYunlei He goto out_page; 1454f15194fcSYunlei He 1455f15194fcSYunlei He if (__write_node_page(node_page, false, NULL, 1456f15194fcSYunlei He &wbc, false, FS_GC_NODE_IO)) 1457f15194fcSYunlei He unlock_page(node_page); 1458f15194fcSYunlei He goto release_page; 1459f15194fcSYunlei He } else { 1460f15194fcSYunlei He /* set page dirty and write it */ 1461f15194fcSYunlei He if (!PageWriteback(node_page)) 1462f15194fcSYunlei He set_page_dirty(node_page); 1463f15194fcSYunlei He } 1464f15194fcSYunlei He out_page: 1465f15194fcSYunlei He unlock_page(node_page); 1466f15194fcSYunlei He release_page: 1467f15194fcSYunlei He f2fs_put_page(node_page, 0); 1468f15194fcSYunlei He } 1469f15194fcSYunlei He 1470faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1471faa24895SJaegeuk Kim struct writeback_control *wbc) 1472faa24895SJaegeuk Kim { 1473b0af6d49SChao Yu return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); 1474faa24895SJaegeuk Kim } 1475faa24895SJaegeuk Kim 14764d57b86dSChao Yu int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1477608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1478608514deSJaegeuk Kim { 1479028a63a6SJan Kara pgoff_t index; 1480942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1481608514deSJaegeuk Kim struct pagevec pvec; 1482608514deSJaegeuk Kim int ret = 0; 1483608514deSJaegeuk Kim struct page *last_page = NULL; 1484608514deSJaegeuk Kim bool marked = false; 148526de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1486028a63a6SJan Kara int nr_pages; 1487608514deSJaegeuk Kim 1488608514deSJaegeuk Kim if (atomic) { 1489608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1490608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1491608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1492608514deSJaegeuk Kim } 1493608514deSJaegeuk Kim retry: 149486679820SMel Gorman pagevec_init(&pvec); 1495608514deSJaegeuk Kim index = 0; 1496608514deSJaegeuk Kim 1497028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 149867fd707fSJan Kara PAGECACHE_TAG_DIRTY))) { 1499028a63a6SJan Kara int i; 1500608514deSJaegeuk Kim 1501608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1502608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1503d68f735bSJaegeuk Kim bool submitted = false; 1504608514deSJaegeuk Kim 1505608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1506608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1507608514deSJaegeuk Kim pagevec_release(&pvec); 15089de69279SChao Yu ret = -EIO; 15099de69279SChao Yu goto out; 1510608514deSJaegeuk Kim } 1511608514deSJaegeuk Kim 1512608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1513608514deSJaegeuk Kim continue; 1514608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1515608514deSJaegeuk Kim continue; 1516608514deSJaegeuk Kim 1517608514deSJaegeuk Kim lock_page(page); 1518608514deSJaegeuk Kim 1519608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1520608514deSJaegeuk Kim continue_unlock: 1521608514deSJaegeuk Kim unlock_page(page); 1522608514deSJaegeuk Kim continue; 1523608514deSJaegeuk Kim } 1524608514deSJaegeuk Kim if (ino_of_node(page) != ino) 152552681375SJaegeuk Kim goto continue_unlock; 152652681375SJaegeuk Kim 1527608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1528608514deSJaegeuk Kim /* someone wrote it for us */ 1529608514deSJaegeuk Kim goto continue_unlock; 1530608514deSJaegeuk Kim } 1531608514deSJaegeuk Kim 1532608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1533608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1534608514deSJaegeuk Kim 1535d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1536d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1537d29fd172SJaegeuk Kim 1538608514deSJaegeuk Kim if (!atomic || page == last_page) { 153952681375SJaegeuk Kim set_fsync_mark(page, 1); 154026de9b11SJaegeuk Kim if (IS_INODE(page)) { 154126de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 154226de9b11SJaegeuk Kim FI_DIRTY_INODE)) 15434d57b86dSChao Yu f2fs_update_inode(inode, page); 154452681375SJaegeuk Kim set_dentry_mark(page, 15454d57b86dSChao Yu f2fs_need_dentry_mark(sbi, ino)); 154626de9b11SJaegeuk Kim } 1547608514deSJaegeuk Kim /* may be written by other thread */ 1548608514deSJaegeuk Kim if (!PageDirty(page)) 1549608514deSJaegeuk Kim set_page_dirty(page); 1550608514deSJaegeuk Kim } 1551608514deSJaegeuk Kim 1552608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1553608514deSJaegeuk Kim goto continue_unlock; 155452681375SJaegeuk Kim 1555e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1556d68f735bSJaegeuk Kim page == last_page, 1557b0af6d49SChao Yu &submitted, wbc, true, 1558b0af6d49SChao Yu FS_NODE_IO); 1559c267ec15SJaegeuk Kim if (ret) { 156052681375SJaegeuk Kim unlock_page(page); 1561608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1562608514deSJaegeuk Kim break; 1563d68f735bSJaegeuk Kim } else if (submitted) { 1564942fd319SJaegeuk Kim last_idx = page->index; 1565608514deSJaegeuk Kim } 15663f5f4959SChao Yu 1567608514deSJaegeuk Kim if (page == last_page) { 1568608514deSJaegeuk Kim f2fs_put_page(page, 0); 1569608514deSJaegeuk Kim marked = true; 157052681375SJaegeuk Kim break; 157152681375SJaegeuk Kim } 1572c267ec15SJaegeuk Kim } 157352681375SJaegeuk Kim pagevec_release(&pvec); 157452681375SJaegeuk Kim cond_resched(); 157552681375SJaegeuk Kim 1576608514deSJaegeuk Kim if (ret || marked) 157752681375SJaegeuk Kim break; 157852681375SJaegeuk Kim } 1579608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1580608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1581608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1582608514deSJaegeuk Kim ino, last_page->index); 1583608514deSJaegeuk Kim lock_page(last_page); 1584d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1585608514deSJaegeuk Kim set_page_dirty(last_page); 1586608514deSJaegeuk Kim unlock_page(last_page); 1587608514deSJaegeuk Kim goto retry; 1588608514deSJaegeuk Kim } 15899de69279SChao Yu out: 1590942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1591b9109b0eSJaegeuk Kim f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); 1592c267ec15SJaegeuk Kim return ret ? -EIO: 0; 159352681375SJaegeuk Kim } 159452681375SJaegeuk Kim 15954d57b86dSChao Yu int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 15964d57b86dSChao Yu struct writeback_control *wbc, 1597b0af6d49SChao Yu bool do_balance, enum iostat_type io_type) 159852681375SJaegeuk Kim { 1599028a63a6SJan Kara pgoff_t index; 160052681375SJaegeuk Kim struct pagevec pvec; 160152681375SJaegeuk Kim int step = 0; 160212bb0a8fSJaegeuk Kim int nwritten = 0; 16033f5f4959SChao Yu int ret = 0; 1604c29fd0c0SChao Yu int nr_pages, done = 0; 1605e05df3b1SJaegeuk Kim 160686679820SMel Gorman pagevec_init(&pvec); 1607e05df3b1SJaegeuk Kim 1608e05df3b1SJaegeuk Kim next_step: 1609e05df3b1SJaegeuk Kim index = 0; 1610e05df3b1SJaegeuk Kim 1611c29fd0c0SChao Yu while (!done && (nr_pages = pagevec_lookup_tag(&pvec, 1612c29fd0c0SChao Yu NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { 1613028a63a6SJan Kara int i; 1614e05df3b1SJaegeuk Kim 1615e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1616e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1617d68f735bSJaegeuk Kim bool submitted = false; 1618e05df3b1SJaegeuk Kim 1619c29fd0c0SChao Yu /* give a priority to WB_SYNC threads */ 1620c29fd0c0SChao Yu if (atomic_read(&sbi->wb_sync_req[NODE]) && 1621c29fd0c0SChao Yu wbc->sync_mode == WB_SYNC_NONE) { 1622c29fd0c0SChao Yu done = 1; 1623c29fd0c0SChao Yu break; 1624c29fd0c0SChao Yu } 1625c29fd0c0SChao Yu 1626e05df3b1SJaegeuk Kim /* 1627e05df3b1SJaegeuk Kim * flushing sequence with step: 1628e05df3b1SJaegeuk Kim * 0. indirect nodes 1629e05df3b1SJaegeuk Kim * 1. dentry dnodes 1630e05df3b1SJaegeuk Kim * 2. file dnodes 1631e05df3b1SJaegeuk Kim */ 1632e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1633e05df3b1SJaegeuk Kim continue; 1634e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1635e05df3b1SJaegeuk Kim is_cold_node(page))) 1636e05df3b1SJaegeuk Kim continue; 1637e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1638e05df3b1SJaegeuk Kim !is_cold_node(page))) 1639e05df3b1SJaegeuk Kim continue; 16409a4cbc9eSChao Yu lock_node: 164152681375SJaegeuk Kim if (!trylock_page(page)) 1642e05df3b1SJaegeuk Kim continue; 1643e05df3b1SJaegeuk Kim 16444ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1645e05df3b1SJaegeuk Kim continue_unlock: 1646e05df3b1SJaegeuk Kim unlock_page(page); 1647e05df3b1SJaegeuk Kim continue; 1648e05df3b1SJaegeuk Kim } 1649e05df3b1SJaegeuk Kim 1650e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1651e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1652e05df3b1SJaegeuk Kim goto continue_unlock; 1653e05df3b1SJaegeuk Kim } 1654e05df3b1SJaegeuk Kim 16552049d4fcSJaegeuk Kim /* flush inline_data */ 165652681375SJaegeuk Kim if (is_inline_node(page)) { 16572049d4fcSJaegeuk Kim clear_inline_node(page); 16582049d4fcSJaegeuk Kim unlock_page(page); 16592049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 16609a4cbc9eSChao Yu goto lock_node; 16612049d4fcSJaegeuk Kim } 16622049d4fcSJaegeuk Kim 1663fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1664fa3d2bdfSJaegeuk Kim 1665fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1666e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1667e05df3b1SJaegeuk Kim goto continue_unlock; 1668e05df3b1SJaegeuk Kim 1669e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1670e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 167152746519SJaegeuk Kim 1672401db79fSYunlong Song ret = __write_node_page(page, false, &submitted, 1673b0af6d49SChao Yu wbc, do_balance, io_type); 1674d68f735bSJaegeuk Kim if (ret) 167552746519SJaegeuk Kim unlock_page(page); 1676d68f735bSJaegeuk Kim else if (submitted) 16773f5f4959SChao Yu nwritten++; 1678e05df3b1SJaegeuk Kim 1679e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1680e05df3b1SJaegeuk Kim break; 1681e05df3b1SJaegeuk Kim } 1682e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1683e05df3b1SJaegeuk Kim cond_resched(); 1684e05df3b1SJaegeuk Kim 1685e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1686e05df3b1SJaegeuk Kim step = 2; 1687e05df3b1SJaegeuk Kim break; 1688e05df3b1SJaegeuk Kim } 1689e05df3b1SJaegeuk Kim } 1690e05df3b1SJaegeuk Kim 1691e05df3b1SJaegeuk Kim if (step < 2) { 1692e05df3b1SJaegeuk Kim step++; 1693e05df3b1SJaegeuk Kim goto next_step; 1694e05df3b1SJaegeuk Kim } 1695db198ae0SChao Yu 16963f5f4959SChao Yu if (nwritten) 1697b9109b0eSJaegeuk Kim f2fs_submit_merged_write(sbi, NODE); 1698db198ae0SChao Yu 1699db198ae0SChao Yu if (unlikely(f2fs_cp_error(sbi))) 1700db198ae0SChao Yu return -EIO; 17013f5f4959SChao Yu return ret; 1702e05df3b1SJaegeuk Kim } 1703e05df3b1SJaegeuk Kim 17044d57b86dSChao Yu int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1705cfe58f9dSJaegeuk Kim { 1706028a63a6SJan Kara pgoff_t index = 0; 1707cfe58f9dSJaegeuk Kim struct pagevec pvec; 1708280db3c8SMiklos Szeredi int ret2, ret = 0; 1709028a63a6SJan Kara int nr_pages; 1710cfe58f9dSJaegeuk Kim 171186679820SMel Gorman pagevec_init(&pvec); 17124ef51a8fSJaegeuk Kim 1713028a63a6SJan Kara while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 171467fd707fSJan Kara PAGECACHE_TAG_WRITEBACK))) { 1715028a63a6SJan Kara int i; 1716cfe58f9dSJaegeuk Kim 1717cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1718cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1719cfe58f9dSJaegeuk Kim 17204bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1721fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1722cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1723cfe58f9dSJaegeuk Kim ret = -EIO; 1724cfe58f9dSJaegeuk Kim } 17254bf08ff6SChao Yu } 1726cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1727cfe58f9dSJaegeuk Kim cond_resched(); 1728cfe58f9dSJaegeuk Kim } 1729cfe58f9dSJaegeuk Kim 1730280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1731cfe58f9dSJaegeuk Kim if (!ret) 1732cfe58f9dSJaegeuk Kim ret = ret2; 1733cfe58f9dSJaegeuk Kim return ret; 1734cfe58f9dSJaegeuk Kim } 1735cfe58f9dSJaegeuk Kim 1736e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1737e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1738e05df3b1SJaegeuk Kim { 17394081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 17409dfa1bafSJaegeuk Kim struct blk_plug plug; 174150c8cdb3SJaegeuk Kim long diff; 1742e05df3b1SJaegeuk Kim 17430771fcc7SChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 17440771fcc7SChao Yu goto skip_write; 17450771fcc7SChao Yu 17464660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 17474660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1748e05df3b1SJaegeuk Kim 1749a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 175087d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1751d3baf95dSJaegeuk Kim goto skip_write; 1752a7fdffbdSJaegeuk Kim 1753c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1754c29fd0c0SChao Yu atomic_inc(&sbi->wb_sync_req[NODE]); 1755c29fd0c0SChao Yu else if (atomic_read(&sbi->wb_sync_req[NODE])) 1756c29fd0c0SChao Yu goto skip_write; 1757c29fd0c0SChao Yu 1758d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1759d31c7c3fSYunlei He 176050c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 17619dfa1bafSJaegeuk Kim blk_start_plug(&plug); 17624d57b86dSChao Yu f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); 17639dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 176450c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1765c29fd0c0SChao Yu 1766c29fd0c0SChao Yu if (wbc->sync_mode == WB_SYNC_ALL) 1767c29fd0c0SChao Yu atomic_dec(&sbi->wb_sync_req[NODE]); 1768e05df3b1SJaegeuk Kim return 0; 1769d3baf95dSJaegeuk Kim 1770d3baf95dSJaegeuk Kim skip_write: 1771d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1772d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1773d3baf95dSJaegeuk Kim return 0; 1774e05df3b1SJaegeuk Kim } 1775e05df3b1SJaegeuk Kim 1776e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1777e05df3b1SJaegeuk Kim { 177826c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 177926c6b887SJaegeuk Kim 1780237c0790SJaegeuk Kim if (!PageUptodate(page)) 1781e05df3b1SJaegeuk Kim SetPageUptodate(page); 178254c55c4eSWeichao Guo #ifdef CONFIG_F2FS_CHECK_FS 178354c55c4eSWeichao Guo if (IS_INODE(page)) 178454c55c4eSWeichao Guo f2fs_inode_chksum_set(F2FS_P_SB(page), page); 178554c55c4eSWeichao Guo #endif 1786e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1787b87078adSJaegeuk Kim __set_page_dirty_nobuffers(page); 17884081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1789e05df3b1SJaegeuk Kim SetPagePrivate(page); 17909e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1791e05df3b1SJaegeuk Kim return 1; 1792e05df3b1SJaegeuk Kim } 1793e05df3b1SJaegeuk Kim return 0; 1794e05df3b1SJaegeuk Kim } 1795e05df3b1SJaegeuk Kim 17960a8165d7SJaegeuk Kim /* 1797e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1798e05df3b1SJaegeuk Kim */ 1799e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1800e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1801e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1802e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1803487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1804487261f3SChao Yu .releasepage = f2fs_release_page, 18055b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 18065b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 18075b7a487cSWeichao Guo #endif 1808e05df3b1SJaegeuk Kim }; 1809e05df3b1SJaegeuk Kim 18108a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 18118a7ed66aSJaegeuk Kim nid_t n) 1812e05df3b1SJaegeuk Kim { 18138a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 18143aa770a9SNamjae Jeon } 1815e05df3b1SJaegeuk Kim 18169a4ffdf5SChao Yu static int __insert_free_nid(struct f2fs_sb_info *sbi, 1817a0761f63SFan Li struct free_nid *i, enum nid_state state) 1818e05df3b1SJaegeuk Kim { 1819b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1820b8559dc2SChao Yu 1821eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1822eb0aa4b8SJaegeuk Kim if (err) 1823eb0aa4b8SJaegeuk Kim return err; 1824eb0aa4b8SJaegeuk Kim 18259a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 18269a4ffdf5SChao Yu nm_i->nid_cnt[state]++; 18279a4ffdf5SChao Yu if (state == FREE_NID) 18289a4ffdf5SChao Yu list_add_tail(&i->list, &nm_i->free_nid_list); 1829eb0aa4b8SJaegeuk Kim return 0; 1830b8559dc2SChao Yu } 1831b8559dc2SChao Yu 18329a4ffdf5SChao Yu static void __remove_free_nid(struct f2fs_sb_info *sbi, 1833a0761f63SFan Li struct free_nid *i, enum nid_state state) 1834b8559dc2SChao Yu { 1835b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1836b8559dc2SChao Yu 18379a4ffdf5SChao Yu f2fs_bug_on(sbi, state != i->state); 18389a4ffdf5SChao Yu nm_i->nid_cnt[state]--; 18399a4ffdf5SChao Yu if (state == FREE_NID) 1840e05df3b1SJaegeuk Kim list_del(&i->list); 18418a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1842e05df3b1SJaegeuk Kim } 1843e05df3b1SJaegeuk Kim 1844a0761f63SFan Li static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, 1845a0761f63SFan Li enum nid_state org_state, enum nid_state dst_state) 1846a0761f63SFan Li { 1847a0761f63SFan Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1848a0761f63SFan Li 1849a0761f63SFan Li f2fs_bug_on(sbi, org_state != i->state); 1850a0761f63SFan Li i->state = dst_state; 1851a0761f63SFan Li nm_i->nid_cnt[org_state]--; 1852a0761f63SFan Li nm_i->nid_cnt[dst_state]++; 1853a0761f63SFan Li 1854a0761f63SFan Li switch (dst_state) { 1855a0761f63SFan Li case PREALLOC_NID: 1856a0761f63SFan Li list_del(&i->list); 1857a0761f63SFan Li break; 1858a0761f63SFan Li case FREE_NID: 1859a0761f63SFan Li list_add_tail(&i->list, &nm_i->free_nid_list); 1860a0761f63SFan Li break; 1861a0761f63SFan Li default: 1862a0761f63SFan Li BUG_ON(1); 1863a0761f63SFan Li } 1864a0761f63SFan Li } 1865a0761f63SFan Li 18665921aaa1SLiFan static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 18675921aaa1SLiFan bool set, bool build) 18685921aaa1SLiFan { 18695921aaa1SLiFan struct f2fs_nm_info *nm_i = NM_I(sbi); 18705921aaa1SLiFan unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 18715921aaa1SLiFan unsigned int nid_ofs = nid - START_NID(nid); 18725921aaa1SLiFan 18735921aaa1SLiFan if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 18745921aaa1SLiFan return; 18755921aaa1SLiFan 18765921aaa1SLiFan if (set) { 18775921aaa1SLiFan if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 18785921aaa1SLiFan return; 18795921aaa1SLiFan __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18805921aaa1SLiFan nm_i->free_nid_count[nat_ofs]++; 18815921aaa1SLiFan } else { 18825921aaa1SLiFan if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) 18835921aaa1SLiFan return; 18845921aaa1SLiFan __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18855921aaa1SLiFan if (!build) 18865921aaa1SLiFan nm_i->free_nid_count[nat_ofs]--; 18875921aaa1SLiFan } 18885921aaa1SLiFan } 18895921aaa1SLiFan 18904ac91242SChao Yu /* return if the nid is recognized as free */ 18915921aaa1SLiFan static bool add_free_nid(struct f2fs_sb_info *sbi, 18925921aaa1SLiFan nid_t nid, bool build, bool update) 1893e05df3b1SJaegeuk Kim { 18946fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 189530a61ddfSChao Yu struct free_nid *i, *e; 189659bbd474SJaegeuk Kim struct nat_entry *ne; 189730a61ddfSChao Yu int err = -EINVAL; 189830a61ddfSChao Yu bool ret = false; 18999198acebSJaegeuk Kim 19009198acebSJaegeuk Kim /* 0 nid should not be used */ 1901cfb271d4SChao Yu if (unlikely(nid == 0)) 19024ac91242SChao Yu return false; 190359bbd474SJaegeuk Kim 19047bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1905e05df3b1SJaegeuk Kim i->nid = nid; 19069a4ffdf5SChao Yu i->state = FREE_NID; 1907e05df3b1SJaegeuk Kim 19085921aaa1SLiFan radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 1909769ec6e5SJaegeuk Kim 1910b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 191130a61ddfSChao Yu 191230a61ddfSChao Yu if (build) { 191330a61ddfSChao Yu /* 191430a61ddfSChao Yu * Thread A Thread B 191530a61ddfSChao Yu * - f2fs_create 191630a61ddfSChao Yu * - f2fs_new_inode 19174d57b86dSChao Yu * - f2fs_alloc_nid 19189a4ffdf5SChao Yu * - __insert_nid_to_list(PREALLOC_NID) 191930a61ddfSChao Yu * - f2fs_balance_fs_bg 19204d57b86dSChao Yu * - f2fs_build_free_nids 19214d57b86dSChao Yu * - __f2fs_build_free_nids 192230a61ddfSChao Yu * - scan_nat_page 192330a61ddfSChao Yu * - add_free_nid 192430a61ddfSChao Yu * - __lookup_nat_cache 192530a61ddfSChao Yu * - f2fs_add_link 19264d57b86dSChao Yu * - f2fs_init_inode_metadata 19274d57b86dSChao Yu * - f2fs_new_inode_page 19284d57b86dSChao Yu * - f2fs_new_node_page 192930a61ddfSChao Yu * - set_node_addr 19304d57b86dSChao Yu * - f2fs_alloc_nid_done 19319a4ffdf5SChao Yu * - __remove_nid_from_list(PREALLOC_NID) 19329a4ffdf5SChao Yu * - __insert_nid_to_list(FREE_NID) 193330a61ddfSChao Yu */ 193430a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 193530a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 193630a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 193730a61ddfSChao Yu goto err_out; 193830a61ddfSChao Yu 193930a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 194030a61ddfSChao Yu if (e) { 19419a4ffdf5SChao Yu if (e->state == FREE_NID) 194230a61ddfSChao Yu ret = true; 194330a61ddfSChao Yu goto err_out; 194430a61ddfSChao Yu } 194530a61ddfSChao Yu } 194630a61ddfSChao Yu ret = true; 1947a0761f63SFan Li err = __insert_free_nid(sbi, i, FREE_NID); 194830a61ddfSChao Yu err_out: 19495921aaa1SLiFan if (update) { 19505921aaa1SLiFan update_free_nid_bitmap(sbi, nid, ret, build); 19515921aaa1SLiFan if (!build) 19525921aaa1SLiFan nm_i->available_nids++; 19535921aaa1SLiFan } 1954b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1955769ec6e5SJaegeuk Kim radix_tree_preload_end(); 19565921aaa1SLiFan 195730a61ddfSChao Yu if (err) 1958e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 195930a61ddfSChao Yu return ret; 1960e05df3b1SJaegeuk Kim } 1961e05df3b1SJaegeuk Kim 1962b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 1963e05df3b1SJaegeuk Kim { 1964b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1965e05df3b1SJaegeuk Kim struct free_nid *i; 1966cf0ee0f0SChao Yu bool need_free = false; 1967cf0ee0f0SChao Yu 1968b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 19698a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 19709a4ffdf5SChao Yu if (i && i->state == FREE_NID) { 1971a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 1972cf0ee0f0SChao Yu need_free = true; 1973e05df3b1SJaegeuk Kim } 1974b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1975cf0ee0f0SChao Yu 1976cf0ee0f0SChao Yu if (need_free) 1977cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1978e05df3b1SJaegeuk Kim } 1979e05df3b1SJaegeuk Kim 19806fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1981e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1982e05df3b1SJaegeuk Kim { 19836fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1984e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1985e05df3b1SJaegeuk Kim block_t blk_addr; 19864ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 1987e05df3b1SJaegeuk Kim int i; 1988e05df3b1SJaegeuk Kim 198923380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 19904ac91242SChao Yu 1991e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1992e05df3b1SJaegeuk Kim 1993e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 1994cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 199504431c44SJaegeuk Kim break; 199623d38844SHaicheng Li 1997e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 19989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 19995921aaa1SLiFan if (blk_addr == NULL_ADDR) { 20005921aaa1SLiFan add_free_nid(sbi, start_nid, true, true); 20015921aaa1SLiFan } else { 2002346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 20035921aaa1SLiFan update_free_nid_bitmap(sbi, start_nid, false, true); 2004346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 2005e05df3b1SJaegeuk Kim } 2006e05df3b1SJaegeuk Kim } 20075921aaa1SLiFan } 2008e05df3b1SJaegeuk Kim 20092fbaa25fSChao Yu static void scan_curseg_cache(struct f2fs_sb_info *sbi) 20104ac91242SChao Yu { 20114ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 20124ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 20132fbaa25fSChao Yu int i; 20144ac91242SChao Yu 20154ac91242SChao Yu down_read(&curseg->journal_rwsem); 20164ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 20174ac91242SChao Yu block_t addr; 20184ac91242SChao Yu nid_t nid; 20194ac91242SChao Yu 20204ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 20214ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 20224ac91242SChao Yu if (addr == NULL_ADDR) 20235921aaa1SLiFan add_free_nid(sbi, nid, true, false); 20244ac91242SChao Yu else 20254ac91242SChao Yu remove_free_nid(sbi, nid); 20264ac91242SChao Yu } 20274ac91242SChao Yu up_read(&curseg->journal_rwsem); 20282fbaa25fSChao Yu } 20292fbaa25fSChao Yu 2030e05df3b1SJaegeuk Kim static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 20314ac91242SChao Yu { 20324ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 20334ac91242SChao Yu unsigned int i, idx; 203497456574SFan Li nid_t nid; 20354ac91242SChao Yu 20364ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 20374ac91242SChao Yu 20384ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 20394ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 20404ac91242SChao Yu continue; 20414ac91242SChao Yu if (!nm_i->free_nid_count[i]) 20424ac91242SChao Yu continue; 20434ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 204497456574SFan Li idx = find_next_bit_le(nm_i->free_nid_bitmap[i], 204597456574SFan Li NAT_ENTRY_PER_BLOCK, idx); 204697456574SFan Li if (idx >= NAT_ENTRY_PER_BLOCK) 204797456574SFan Li break; 20484ac91242SChao Yu 20494ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 20505921aaa1SLiFan add_free_nid(sbi, nid, true, false); 20514ac91242SChao Yu 20529a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) 20534ac91242SChao Yu goto out; 20544ac91242SChao Yu } 20554ac91242SChao Yu } 20564ac91242SChao Yu out: 20572fbaa25fSChao Yu scan_curseg_cache(sbi); 20584ac91242SChao Yu 20594ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 20604ac91242SChao Yu } 20614ac91242SChao Yu 20624d57b86dSChao Yu static void __f2fs_build_free_nids(struct f2fs_sb_info *sbi, 20634d57b86dSChao Yu bool sync, bool mount) 2064e05df3b1SJaegeuk Kim { 2065e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 20668760952dSHaicheng Li int i = 0; 206755008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 2068e05df3b1SJaegeuk Kim 2069e9cdd307SYunlei He if (unlikely(nid >= nm_i->max_nid)) 2070e9cdd307SYunlei He nid = 0; 2071e9cdd307SYunlei He 207255008d84SJaegeuk Kim /* Enough entries */ 20739a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 207455008d84SJaegeuk Kim return; 2075e05df3b1SJaegeuk Kim 20764d57b86dSChao Yu if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) 2077e05df3b1SJaegeuk Kim return; 2078e05df3b1SJaegeuk Kim 20794ac91242SChao Yu if (!mount) { 20804ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 20814ac91242SChao Yu scan_free_nid_bits(sbi); 20824ac91242SChao Yu 208374986213SFan Li if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) 208422ad0b6aSJaegeuk Kim return; 208522ad0b6aSJaegeuk Kim } 208622ad0b6aSJaegeuk Kim 208755008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 20884d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 208926879fb1SChao Yu META_NAT, true); 2090e05df3b1SJaegeuk Kim 2091b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2092a5131193SJaegeuk Kim 2093e05df3b1SJaegeuk Kim while (1) { 209466e83361SYunlei He if (!test_bit_le(NAT_BLOCK_OFFSET(nid), 209566e83361SYunlei He nm_i->nat_block_bitmap)) { 2096e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 2097e05df3b1SJaegeuk Kim 20986fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 2099e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 210066e83361SYunlei He } 2101e05df3b1SJaegeuk Kim 2102e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 2103cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 2104e05df3b1SJaegeuk Kim nid = 0; 210555008d84SJaegeuk Kim 2106a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 2107e05df3b1SJaegeuk Kim break; 2108e05df3b1SJaegeuk Kim } 2109e05df3b1SJaegeuk Kim 211055008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 211155008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 2112e05df3b1SJaegeuk Kim 2113e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 21142fbaa25fSChao Yu scan_curseg_cache(sbi); 2115dfc08a12SChao Yu 2116b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 21172db2388fSChao Yu 21184d57b86dSChao Yu f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2119ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2120e05df3b1SJaegeuk Kim } 2121e05df3b1SJaegeuk Kim 21224d57b86dSChao Yu void f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 21232411cf5bSChao Yu { 21242411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 21254d57b86dSChao Yu __f2fs_build_free_nids(sbi, sync, mount); 21262411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 21272411cf5bSChao Yu } 21282411cf5bSChao Yu 2129e05df3b1SJaegeuk Kim /* 2130e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2131e05df3b1SJaegeuk Kim * from second parameter of this function. 2132e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2133e05df3b1SJaegeuk Kim */ 21344d57b86dSChao Yu bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2135e05df3b1SJaegeuk Kim { 2136e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2137e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2138e05df3b1SJaegeuk Kim retry: 2139cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 214055523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 214155523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2142cb78942bSJaegeuk Kim return false; 214355523519SChao Yu } 2144cb78942bSJaegeuk Kim #endif 2145b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2146e05df3b1SJaegeuk Kim 214704d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 214804d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 214904d47e67SChao Yu return false; 215004d47e67SChao Yu } 2151e05df3b1SJaegeuk Kim 21524d57b86dSChao Yu /* We should not use stale free nids created by f2fs_build_free_nids */ 21534d57b86dSChao Yu if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { 21549a4ffdf5SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 21559a4ffdf5SChao Yu i = list_first_entry(&nm_i->free_nid_list, 2156b8559dc2SChao Yu struct free_nid, list); 2157e05df3b1SJaegeuk Kim *nid = i->nid; 2158b8559dc2SChao Yu 2159a0761f63SFan Li __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); 216004d47e67SChao Yu nm_i->available_nids--; 21614ac91242SChao Yu 2162346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 21634ac91242SChao Yu 2164b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2165e05df3b1SJaegeuk Kim return true; 2166e05df3b1SJaegeuk Kim } 2167b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 216855008d84SJaegeuk Kim 216955008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 21704d57b86dSChao Yu f2fs_build_free_nids(sbi, true, false); 217155008d84SJaegeuk Kim goto retry; 217255008d84SJaegeuk Kim } 2173e05df3b1SJaegeuk Kim 21740a8165d7SJaegeuk Kim /* 21754d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2176e05df3b1SJaegeuk Kim */ 21774d57b86dSChao Yu void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2178e05df3b1SJaegeuk Kim { 2179e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2180e05df3b1SJaegeuk Kim struct free_nid *i; 2181e05df3b1SJaegeuk Kim 2182b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 21838a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2184b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2185a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2186b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2187cf0ee0f0SChao Yu 2188cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2189e05df3b1SJaegeuk Kim } 2190e05df3b1SJaegeuk Kim 21910a8165d7SJaegeuk Kim /* 21924d57b86dSChao Yu * f2fs_alloc_nid() should be called prior to this function. 2193e05df3b1SJaegeuk Kim */ 21944d57b86dSChao Yu void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2195e05df3b1SJaegeuk Kim { 219649952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 219749952fa1SJaegeuk Kim struct free_nid *i; 2198cf0ee0f0SChao Yu bool need_free = false; 219949952fa1SJaegeuk Kim 220065985d93SJaegeuk Kim if (!nid) 220165985d93SJaegeuk Kim return; 220265985d93SJaegeuk Kim 2203b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22048a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2205b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2206b8559dc2SChao Yu 22074d57b86dSChao Yu if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { 2208a0761f63SFan Li __remove_free_nid(sbi, i, PREALLOC_NID); 2209cf0ee0f0SChao Yu need_free = true; 221095630cbaSHaicheng Li } else { 2211a0761f63SFan Li __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); 221295630cbaSHaicheng Li } 221304d47e67SChao Yu 221404d47e67SChao Yu nm_i->available_nids++; 221504d47e67SChao Yu 2216346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 22174ac91242SChao Yu 2218b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2219cf0ee0f0SChao Yu 2220cf0ee0f0SChao Yu if (need_free) 2221cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2222e05df3b1SJaegeuk Kim } 2223e05df3b1SJaegeuk Kim 22244d57b86dSChao Yu int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 222531696580SChao Yu { 222631696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 222731696580SChao Yu struct free_nid *i, *next; 222831696580SChao Yu int nr = nr_shrink; 222931696580SChao Yu 22309a4ffdf5SChao Yu if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 2231ad4edb83SJaegeuk Kim return 0; 2232ad4edb83SJaegeuk Kim 223331696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 223431696580SChao Yu return 0; 223531696580SChao Yu 2236b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 22379a4ffdf5SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 2238b8559dc2SChao Yu if (nr_shrink <= 0 || 22399a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) 224031696580SChao Yu break; 2241b8559dc2SChao Yu 2242a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 224331696580SChao Yu kmem_cache_free(free_nid_slab, i); 224431696580SChao Yu nr_shrink--; 224531696580SChao Yu } 2246b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 224731696580SChao Yu mutex_unlock(&nm_i->build_lock); 224831696580SChao Yu 224931696580SChao Yu return nr - nr_shrink; 225031696580SChao Yu } 225131696580SChao Yu 22524d57b86dSChao Yu void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) 225328cdce04SChao Yu { 225428cdce04SChao Yu void *src_addr, *dst_addr; 225528cdce04SChao Yu size_t inline_size; 225628cdce04SChao Yu struct page *ipage; 225728cdce04SChao Yu struct f2fs_inode *ri; 225828cdce04SChao Yu 22594d57b86dSChao Yu ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 22609850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 226128cdce04SChao Yu 2262e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 22631eca05aaSYunlei He if (ri->i_inline & F2FS_INLINE_XATTR) { 22641eca05aaSYunlei He set_inode_flag(inode, FI_INLINE_XATTR); 22651eca05aaSYunlei He } else { 226691942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2267e3b4d43fSJaegeuk Kim goto update_inode; 2268e3b4d43fSJaegeuk Kim } 2269e3b4d43fSJaegeuk Kim 22706afc662eSChao Yu dst_addr = inline_xattr_addr(inode, ipage); 22716afc662eSChao Yu src_addr = inline_xattr_addr(inode, page); 227228cdce04SChao Yu inline_size = inline_xattr_size(inode); 227328cdce04SChao Yu 2274fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 227528cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2276e3b4d43fSJaegeuk Kim update_inode: 22774d57b86dSChao Yu f2fs_update_inode(inode, ipage); 227828cdce04SChao Yu f2fs_put_page(ipage, 1); 227928cdce04SChao Yu } 228028cdce04SChao Yu 22814d57b86dSChao Yu int f2fs_recover_xattr_data(struct inode *inode, struct page *page) 2282abb2366cSJaegeuk Kim { 22834081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2284abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 228587905682SYunlei He nid_t new_xnid; 228687905682SYunlei He struct dnode_of_data dn; 2287abb2366cSJaegeuk Kim struct node_info ni; 2288d260081cSChao Yu struct page *xpage; 2289abb2366cSJaegeuk Kim 2290abb2366cSJaegeuk Kim if (!prev_xnid) 2291abb2366cSJaegeuk Kim goto recover_xnid; 2292abb2366cSJaegeuk Kim 2293d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 22944d57b86dSChao Yu f2fs_get_node_info(sbi, prev_xnid, &ni); 22954d57b86dSChao Yu f2fs_invalidate_blocks(sbi, ni.blk_addr); 2296000519f2SChao Yu dec_valid_node_count(sbi, inode, false); 2297479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2298abb2366cSJaegeuk Kim 2299abb2366cSJaegeuk Kim recover_xnid: 2300d260081cSChao Yu /* 2: update xattr nid in inode */ 23014d57b86dSChao Yu if (!f2fs_alloc_nid(sbi, &new_xnid)) 230287905682SYunlei He return -ENOSPC; 230387905682SYunlei He 230487905682SYunlei He set_new_dnode(&dn, inode, NULL, NULL, new_xnid); 23054d57b86dSChao Yu xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); 230687905682SYunlei He if (IS_ERR(xpage)) { 23074d57b86dSChao Yu f2fs_alloc_nid_failed(sbi, new_xnid); 230887905682SYunlei He return PTR_ERR(xpage); 230987905682SYunlei He } 231087905682SYunlei He 23114d57b86dSChao Yu f2fs_alloc_nid_done(sbi, new_xnid); 23124d57b86dSChao Yu f2fs_update_inode_page(inode); 2313abb2366cSJaegeuk Kim 2314d260081cSChao Yu /* 3: update and set xattr node page dirty */ 231587905682SYunlei He memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); 2316d260081cSChao Yu 2317d260081cSChao Yu set_page_dirty(xpage); 2318d260081cSChao Yu f2fs_put_page(xpage, 1); 2319abb2366cSJaegeuk Kim 2320d260081cSChao Yu return 0; 2321abb2366cSJaegeuk Kim } 2322abb2366cSJaegeuk Kim 23234d57b86dSChao Yu int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2324e05df3b1SJaegeuk Kim { 232558bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2326e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2327e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2328e05df3b1SJaegeuk Kim struct page *ipage; 2329e05df3b1SJaegeuk Kim 23304d57b86dSChao Yu f2fs_get_node_info(sbi, ino, &old_ni); 2331e8271fa3SJaegeuk Kim 2332e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2333e8271fa3SJaegeuk Kim return -EINVAL; 2334e8ea9b3dSJaegeuk Kim retry: 2335300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2336e8ea9b3dSJaegeuk Kim if (!ipage) { 2337e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2338e8ea9b3dSJaegeuk Kim goto retry; 2339e8ea9b3dSJaegeuk Kim } 2340e05df3b1SJaegeuk Kim 2341e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2342b8559dc2SChao Yu remove_free_nid(sbi, ino); 2343e05df3b1SJaegeuk Kim 2344237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2345e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2346e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2347c5667575SChao Yu set_cold_node(page, false); 2348e05df3b1SJaegeuk Kim 234958bfaf44SJaegeuk Kim src = F2FS_INODE(page); 235058bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2351e05df3b1SJaegeuk Kim 235258bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 235358bfaf44SJaegeuk Kim dst->i_size = 0; 235458bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 235558bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 235658bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 23577a2af766SChao Yu dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); 23585c57132eSChao Yu if (dst->i_inline & F2FS_EXTRA_ATTR) { 23597a2af766SChao Yu dst->i_extra_isize = src->i_extra_isize; 23606afc662eSChao Yu 23616afc662eSChao Yu if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && 23626afc662eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23636afc662eSChao Yu i_inline_xattr_size)) 23646afc662eSChao Yu dst->i_inline_xattr_size = src->i_inline_xattr_size; 23656afc662eSChao Yu 23665c57132eSChao Yu if (f2fs_sb_has_project_quota(sbi->sb) && 23675c57132eSChao Yu F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), 23685c57132eSChao Yu i_projid)) 23695c57132eSChao Yu dst->i_projid = src->i_projid; 23705c57132eSChao Yu } 2371e05df3b1SJaegeuk Kim 2372e05df3b1SJaegeuk Kim new_ni = old_ni; 2373e05df3b1SJaegeuk Kim new_ni.ino = ino; 2374e05df3b1SJaegeuk Kim 23750abd675eSChao Yu if (unlikely(inc_valid_node_count(sbi, NULL, true))) 237665e5cd0aSJaegeuk Kim WARN_ON(1); 2377479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2378e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2379617deb8cSJaegeuk Kim set_page_dirty(ipage); 2380e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2381e05df3b1SJaegeuk Kim return 0; 2382e05df3b1SJaegeuk Kim } 2383e05df3b1SJaegeuk Kim 23844d57b86dSChao Yu void f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 2385e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2386e05df3b1SJaegeuk Kim { 2387e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2388e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2389e05df3b1SJaegeuk Kim block_t addr; 23909ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2391e05df3b1SJaegeuk Kim 2392e05df3b1SJaegeuk Kim /* scan the node segment */ 2393e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2394e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2395e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2396e05df3b1SJaegeuk Kim 23979ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2398664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2399393ff91fSJaegeuk Kim 24009af0ff1cSChao Yu /* readahead node pages */ 24014d57b86dSChao Yu f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); 24029af0ff1cSChao Yu 24039ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 24044d57b86dSChao Yu struct page *page = f2fs_get_tmp_page(sbi, idx); 2405393ff91fSJaegeuk Kim 24069ecf4b80SChao Yu rn = F2FS_NODE(page); 2407393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2408393ff91fSJaegeuk Kim sum_entry->version = 0; 2409393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 24109af0ff1cSChao Yu sum_entry++; 24119ecf4b80SChao Yu f2fs_put_page(page, 1); 24129af0ff1cSChao Yu } 2413bac4eef6SChao Yu 24149ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2415bac4eef6SChao Yu addr + nrpages); 24169af0ff1cSChao Yu } 2417e05df3b1SJaegeuk Kim } 2418e05df3b1SJaegeuk Kim 2419aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2420e05df3b1SJaegeuk Kim { 2421e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2422e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2423b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2424e05df3b1SJaegeuk Kim int i; 2425e05df3b1SJaegeuk Kim 2426b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2427dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2428e05df3b1SJaegeuk Kim struct nat_entry *ne; 2429e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2430dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2431e05df3b1SJaegeuk Kim 2432dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 24339be32d72SJaegeuk Kim 2434e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2435e05df3b1SJaegeuk Kim if (!ne) { 243612f9ef37SYunlei He ne = __alloc_nat_entry(nid, true); 243712f9ef37SYunlei He __init_nat_entry(nm_i, ne, &raw_ne, true); 24389be32d72SJaegeuk Kim } 243904d47e67SChao Yu 244004d47e67SChao Yu /* 244104d47e67SChao Yu * if a free nat in journal has not been used after last 244204d47e67SChao Yu * checkpoint, we should remove it from available nids, 244304d47e67SChao Yu * since later we will add it again. 244404d47e67SChao Yu */ 244504d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 244604d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 244704d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 244804d47e67SChao Yu nm_i->available_nids--; 244904d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 245004d47e67SChao Yu } 245104d47e67SChao Yu 2452e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2453e05df3b1SJaegeuk Kim } 2454dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2455b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2456e05df3b1SJaegeuk Kim } 2457e05df3b1SJaegeuk Kim 2458309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2459309cc2b6SJaegeuk Kim struct list_head *head, int max) 2460e05df3b1SJaegeuk Kim { 2461309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2462e05df3b1SJaegeuk Kim 2463309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2464309cc2b6SJaegeuk Kim goto add_out; 2465e05df3b1SJaegeuk Kim 2466309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2467309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2468309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2469309cc2b6SJaegeuk Kim return; 2470309cc2b6SJaegeuk Kim } 2471309cc2b6SJaegeuk Kim } 2472309cc2b6SJaegeuk Kim add_out: 2473309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2474aec71382SChao Yu } 2475aec71382SChao Yu 24769f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 247722ad0b6aSJaegeuk Kim struct page *page) 247822ad0b6aSJaegeuk Kim { 247922ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 248022ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 248122ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 248222ad0b6aSJaegeuk Kim int valid = 0; 248337a0ab2aSFan Li int i = 0; 248422ad0b6aSJaegeuk Kim 248522ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 248622ad0b6aSJaegeuk Kim return; 248722ad0b6aSJaegeuk Kim 248837a0ab2aSFan Li if (nat_index == 0) { 248937a0ab2aSFan Li valid = 1; 249037a0ab2aSFan Li i = 1; 249137a0ab2aSFan Li } 249237a0ab2aSFan Li for (; i < NAT_ENTRY_PER_BLOCK; i++) { 249337a0ab2aSFan Li if (nat_blk->entries[i].block_addr != NULL_ADDR) 249422ad0b6aSJaegeuk Kim valid++; 249522ad0b6aSJaegeuk Kim } 249622ad0b6aSJaegeuk Kim if (valid == 0) { 249723380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 249823380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 249922ad0b6aSJaegeuk Kim return; 250022ad0b6aSJaegeuk Kim } 250122ad0b6aSJaegeuk Kim 250223380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 250322ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 250423380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 250522ad0b6aSJaegeuk Kim else 250623380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 250722ad0b6aSJaegeuk Kim } 250822ad0b6aSJaegeuk Kim 2509309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 251022ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2511309cc2b6SJaegeuk Kim { 2512309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2513b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2514309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2515309cc2b6SJaegeuk Kim bool to_journal = true; 2516309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2517309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2518309cc2b6SJaegeuk Kim struct page *page = NULL; 2519aec71382SChao Yu 2520aec71382SChao Yu /* 2521aec71382SChao Yu * there are two steps to flush nat entries: 2522aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2523aec71382SChao Yu * #2, flush nat entries to nat page. 2524aec71382SChao Yu */ 252522ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 252622ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2527aec71382SChao Yu to_journal = false; 2528aec71382SChao Yu 2529aec71382SChao Yu if (to_journal) { 2530b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2531aec71382SChao Yu } else { 2532e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2533e05df3b1SJaegeuk Kim nat_blk = page_address(page); 25349850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2535e05df3b1SJaegeuk Kim } 2536e05df3b1SJaegeuk Kim 2537aec71382SChao Yu /* flush dirty nats in nat entry set */ 2538309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2539aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2540aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2541aec71382SChao Yu int offset; 2542aec71382SChao Yu 2543febeca6dSChao Yu f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); 2544309cc2b6SJaegeuk Kim 2545aec71382SChao Yu if (to_journal) { 25464d57b86dSChao Yu offset = f2fs_lookup_journal_in_cursum(journal, 2547aec71382SChao Yu NAT_JOURNAL, nid, 1); 25489850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2549dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2550dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2551aec71382SChao Yu } else { 2552aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2553aec71382SChao Yu } 2554aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 255588bd02c9SJaegeuk Kim nat_reset_flag(ne); 25560b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 255704d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 25585921aaa1SLiFan add_free_nid(sbi, nid, false, true); 25594ac91242SChao Yu } else { 25604ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2561346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 256204d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 256304d47e67SChao Yu } 2564e05df3b1SJaegeuk Kim } 2565aec71382SChao Yu 256622ad0b6aSJaegeuk Kim if (to_journal) { 2567b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 256822ad0b6aSJaegeuk Kim } else { 256922ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2570e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 257122ad0b6aSJaegeuk Kim } 2572aec71382SChao Yu 257359c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 257459c9081bSYunlei He if (!set->entry_cnt) { 2575309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2576309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2577309cc2b6SJaegeuk Kim } 257859c9081bSYunlei He } 2579aec71382SChao Yu 2580309cc2b6SJaegeuk Kim /* 2581309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2582309cc2b6SJaegeuk Kim */ 25834d57b86dSChao Yu void f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2584309cc2b6SJaegeuk Kim { 2585309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2586309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2587b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 25887aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2589309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2590309cc2b6SJaegeuk Kim unsigned int found; 2591309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2592309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2593309cc2b6SJaegeuk Kim 25947f2ecdd8SJaegeuk Kim /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ 25957f2ecdd8SJaegeuk Kim if (enabled_nat_bits(sbi, cpc)) { 25967f2ecdd8SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 25977f2ecdd8SJaegeuk Kim remove_nats_in_journal(sbi); 25987f2ecdd8SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 25997f2ecdd8SJaegeuk Kim } 26007f2ecdd8SJaegeuk Kim 260120d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 260220d047c8SChangman Lee return; 2603a5131193SJaegeuk Kim 2604b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2605a5131193SJaegeuk Kim 2606309cc2b6SJaegeuk Kim /* 2607309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2608309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2609309cc2b6SJaegeuk Kim * into nat entry set. 2610309cc2b6SJaegeuk Kim */ 2611900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 261222ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2613309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2614309cc2b6SJaegeuk Kim 2615309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 26167aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2617309cc2b6SJaegeuk Kim unsigned idx; 2618309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2619309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2620309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2621dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2622309cc2b6SJaegeuk Kim } 2623309cc2b6SJaegeuk Kim 2624309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2625309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 262622ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2627309cc2b6SJaegeuk Kim 2628b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 262959c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2630e05df3b1SJaegeuk Kim } 2631e05df3b1SJaegeuk Kim 263222ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 263322ad0b6aSJaegeuk Kim { 263422ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 263522ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 263622ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 263722ad0b6aSJaegeuk Kim unsigned int i; 263822ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 263922ad0b6aSJaegeuk Kim block_t nat_bits_addr; 264022ad0b6aSJaegeuk Kim 264122ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 264222ad0b6aSJaegeuk Kim return 0; 264322ad0b6aSJaegeuk Kim 2644df033cafSChao Yu nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 2645acbf054dSChao Yu nm_i->nat_bits = f2fs_kzalloc(sbi, 2646acbf054dSChao Yu nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); 264722ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 264822ad0b6aSJaegeuk Kim return -ENOMEM; 264922ad0b6aSJaegeuk Kim 265022ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 265122ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 265222ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 26534d57b86dSChao Yu struct page *page = f2fs_get_meta_page(sbi, nat_bits_addr++); 265422ad0b6aSJaegeuk Kim 265522ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 265622ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 265722ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 265822ad0b6aSJaegeuk Kim } 265922ad0b6aSJaegeuk Kim 2660ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 266122ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 266222ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 266322ad0b6aSJaegeuk Kim return 0; 266422ad0b6aSJaegeuk Kim } 266522ad0b6aSJaegeuk Kim 266622ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 266722ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 266822ad0b6aSJaegeuk Kim 266922ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 267022ad0b6aSJaegeuk Kim return 0; 267122ad0b6aSJaegeuk Kim } 267222ad0b6aSJaegeuk Kim 2673bd80a4b9SHou Pengyang static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 26747041d5d2SChao Yu { 26757041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 26767041d5d2SChao Yu unsigned int i = 0; 26777041d5d2SChao Yu nid_t nid, last_nid; 26787041d5d2SChao Yu 26797041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 26807041d5d2SChao Yu return; 26817041d5d2SChao Yu 26827041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26837041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 26847041d5d2SChao Yu if (i >= nm_i->nat_blocks) 26857041d5d2SChao Yu break; 26867041d5d2SChao Yu 26877041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 26887041d5d2SChao Yu 26897041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 2690f6986edeSFan Li last_nid = nid + NAT_ENTRY_PER_BLOCK; 26917041d5d2SChao Yu 2692346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 26937041d5d2SChao Yu for (; nid < last_nid; nid++) 2694346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2695346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 26967041d5d2SChao Yu } 26977041d5d2SChao Yu 26987041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 26997041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 27007041d5d2SChao Yu if (i >= nm_i->nat_blocks) 27017041d5d2SChao Yu break; 27027041d5d2SChao Yu 27037041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 27047041d5d2SChao Yu } 27057041d5d2SChao Yu } 27067041d5d2SChao Yu 2707e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2708e05df3b1SJaegeuk Kim { 2709e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2710e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2711e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 271222ad0b6aSJaegeuk Kim unsigned int nat_segs; 271322ad0b6aSJaegeuk Kim int err; 2714e05df3b1SJaegeuk Kim 2715e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2716e05df3b1SJaegeuk Kim 2717e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2718e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 271922ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 272022ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 27217ee0eeabSJaegeuk Kim 2722b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 272304d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 2724292c196aSChao Yu sbi->nquota_files - F2FS_RESERVED_NODE_NUM; 27259a4ffdf5SChao Yu nm_i->nid_cnt[FREE_NID] = 0; 27269a4ffdf5SChao Yu nm_i->nid_cnt[PREALLOC_NID] = 0; 2727e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2728cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2729ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 27302304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2731e05df3b1SJaegeuk Kim 27328a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 27339a4ffdf5SChao Yu INIT_LIST_HEAD(&nm_i->free_nid_list); 2734769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2735769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2736e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2737e05df3b1SJaegeuk Kim 2738e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2739b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2740b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2741e05df3b1SJaegeuk Kim 2742e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 274379b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2744e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2745e05df3b1SJaegeuk Kim if (!version_bitmap) 2746e05df3b1SJaegeuk Kim return -EFAULT; 2747e05df3b1SJaegeuk Kim 274879b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 274979b5793bSAlexandru Gheorghiu GFP_KERNEL); 275079b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 275179b5793bSAlexandru Gheorghiu return -ENOMEM; 2752599a09b2SChao Yu 275322ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 275422ad0b6aSJaegeuk Kim if (err) 275522ad0b6aSJaegeuk Kim return err; 275622ad0b6aSJaegeuk Kim 2757599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2758599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2759599a09b2SChao Yu GFP_KERNEL); 2760599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2761599a09b2SChao Yu return -ENOMEM; 2762599a09b2SChao Yu #endif 2763599a09b2SChao Yu 2764e05df3b1SJaegeuk Kim return 0; 2765e05df3b1SJaegeuk Kim } 2766e05df3b1SJaegeuk Kim 27679f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 27684ac91242SChao Yu { 27694ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 2770bb1105e4SJaegeuk Kim int i; 27714ac91242SChao Yu 2772026f0507SKees Cook nm_i->free_nid_bitmap = 2773026f0507SKees Cook f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), 2774026f0507SKees Cook nm_i->nat_blocks), 2775026f0507SKees Cook GFP_KERNEL); 27764ac91242SChao Yu if (!nm_i->free_nid_bitmap) 27774ac91242SChao Yu return -ENOMEM; 27784ac91242SChao Yu 2779bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) { 2780bb1105e4SJaegeuk Kim nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, 2781bb1105e4SJaegeuk Kim NAT_ENTRY_BITMAP_SIZE_ALIGNED, GFP_KERNEL); 2782bb1105e4SJaegeuk Kim if (!nm_i->free_nid_bitmap) 2783bb1105e4SJaegeuk Kim return -ENOMEM; 2784bb1105e4SJaegeuk Kim } 2785bb1105e4SJaegeuk Kim 2786628b3d14SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, 27874ac91242SChao Yu GFP_KERNEL); 27884ac91242SChao Yu if (!nm_i->nat_block_bitmap) 27894ac91242SChao Yu return -ENOMEM; 2790586d1492SChao Yu 27919d2a789cSKees Cook nm_i->free_nid_count = 27929d2a789cSKees Cook f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), 27939d2a789cSKees Cook nm_i->nat_blocks), 27949d2a789cSKees Cook GFP_KERNEL); 2795586d1492SChao Yu if (!nm_i->free_nid_count) 2796586d1492SChao Yu return -ENOMEM; 27974ac91242SChao Yu return 0; 27984ac91242SChao Yu } 27994ac91242SChao Yu 28004d57b86dSChao Yu int f2fs_build_node_manager(struct f2fs_sb_info *sbi) 2801e05df3b1SJaegeuk Kim { 2802e05df3b1SJaegeuk Kim int err; 2803e05df3b1SJaegeuk Kim 2804acbf054dSChao Yu sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), 2805acbf054dSChao Yu GFP_KERNEL); 2806e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2807e05df3b1SJaegeuk Kim return -ENOMEM; 2808e05df3b1SJaegeuk Kim 2809e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2810e05df3b1SJaegeuk Kim if (err) 2811e05df3b1SJaegeuk Kim return err; 2812e05df3b1SJaegeuk Kim 28134ac91242SChao Yu err = init_free_nid_cache(sbi); 28144ac91242SChao Yu if (err) 28154ac91242SChao Yu return err; 28164ac91242SChao Yu 28177041d5d2SChao Yu /* load free nid status from nat_bits table */ 28187041d5d2SChao Yu load_free_nid_bitmap(sbi); 28197041d5d2SChao Yu 28204d57b86dSChao Yu f2fs_build_free_nids(sbi, true, true); 2821e05df3b1SJaegeuk Kim return 0; 2822e05df3b1SJaegeuk Kim } 2823e05df3b1SJaegeuk Kim 28244d57b86dSChao Yu void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) 2825e05df3b1SJaegeuk Kim { 2826e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2827e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2828e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 28297aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2830e05df3b1SJaegeuk Kim nid_t nid = 0; 2831e05df3b1SJaegeuk Kim unsigned int found; 2832e05df3b1SJaegeuk Kim 2833e05df3b1SJaegeuk Kim if (!nm_i) 2834e05df3b1SJaegeuk Kim return; 2835e05df3b1SJaegeuk Kim 2836e05df3b1SJaegeuk Kim /* destroy free nid list */ 2837b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 28389a4ffdf5SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 2839a0761f63SFan Li __remove_free_nid(sbi, i, FREE_NID); 2840b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2841cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2842b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2843e05df3b1SJaegeuk Kim } 28449a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); 28459a4ffdf5SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); 28469a4ffdf5SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); 2847b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2848e05df3b1SJaegeuk Kim 2849e05df3b1SJaegeuk Kim /* destroy nat cache */ 2850b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2851e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2852e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2853e05df3b1SJaegeuk Kim unsigned idx; 28547aed0d45SJaegeuk Kim 2855b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2856b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2857b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2858e05df3b1SJaegeuk Kim } 28599850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 28607aed0d45SJaegeuk Kim 28617aed0d45SJaegeuk Kim /* destroy nat set cache */ 28627aed0d45SJaegeuk Kim nid = 0; 28637aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 28647aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 28657aed0d45SJaegeuk Kim unsigned idx; 28667aed0d45SJaegeuk Kim 28677aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 28687aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 28697aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 28707aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 28717aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 28727aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 28737aed0d45SJaegeuk Kim } 28747aed0d45SJaegeuk Kim } 2875b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2876e05df3b1SJaegeuk Kim 28774ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 2878bb1105e4SJaegeuk Kim if (nm_i->free_nid_bitmap) { 2879bb1105e4SJaegeuk Kim int i; 2880bb1105e4SJaegeuk Kim 2881bb1105e4SJaegeuk Kim for (i = 0; i < nm_i->nat_blocks; i++) 2882bb1105e4SJaegeuk Kim kvfree(nm_i->free_nid_bitmap[i]); 2883bb1105e4SJaegeuk Kim kfree(nm_i->free_nid_bitmap); 2884bb1105e4SJaegeuk Kim } 2885586d1492SChao Yu kvfree(nm_i->free_nid_count); 28864ac91242SChao Yu 2887e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 288822ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2889599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2890599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2891599a09b2SChao Yu #endif 2892e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2893e05df3b1SJaegeuk Kim kfree(nm_i); 2894e05df3b1SJaegeuk Kim } 2895e05df3b1SJaegeuk Kim 28964d57b86dSChao Yu int __init f2fs_create_node_manager_caches(void) 2897e05df3b1SJaegeuk Kim { 2898e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2899e8512d2eSGu Zheng sizeof(struct nat_entry)); 2900e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2901aec71382SChao Yu goto fail; 2902e05df3b1SJaegeuk Kim 2903e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2904e8512d2eSGu Zheng sizeof(struct free_nid)); 2905aec71382SChao Yu if (!free_nid_slab) 2906ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2907aec71382SChao Yu 2908aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2909aec71382SChao Yu sizeof(struct nat_entry_set)); 2910aec71382SChao Yu if (!nat_entry_set_slab) 2911ce3e6d25SMarkus Elfring goto destroy_free_nid; 2912e05df3b1SJaegeuk Kim return 0; 2913aec71382SChao Yu 2914ce3e6d25SMarkus Elfring destroy_free_nid: 2915aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2916ce3e6d25SMarkus Elfring destroy_nat_entry: 2917aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2918aec71382SChao Yu fail: 2919aec71382SChao Yu return -ENOMEM; 2920e05df3b1SJaegeuk Kim } 2921e05df3b1SJaegeuk Kim 29224d57b86dSChao Yu void f2fs_destroy_node_manager_caches(void) 2923e05df3b1SJaegeuk Kim { 2924aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2925e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2926e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2927e05df3b1SJaegeuk Kim } 2928