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" 229e4ded3fSJaegeuk Kim #include "trace.h" 2351dd6249SNamjae Jeon #include <trace/events/f2fs.h> 24e05df3b1SJaegeuk Kim 25f978f5a0SGu Zheng #define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) 26f978f5a0SGu Zheng 27e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 28e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 29aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 30e05df3b1SJaegeuk Kim 316fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 32cdfc41c1SJaegeuk Kim { 336fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 34cdfc41c1SJaegeuk Kim struct sysinfo val; 35e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 36cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 376fb03f3aSJaegeuk Kim bool res = false; 38cdfc41c1SJaegeuk Kim 39cdfc41c1SJaegeuk Kim si_meminfo(&val); 40e5e7ea3cSJaegeuk Kim 41e5e7ea3cSJaegeuk Kim /* only uses low memory */ 42e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 43e5e7ea3cSJaegeuk Kim 44429511cdSChao Yu /* 45429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 46429511cdSChao Yu */ 476fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 48e5e7ea3cSJaegeuk Kim mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 49e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 50e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 516fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 52e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 53e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 54e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 55a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 56a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 57a1257023SJaegeuk Kim return false; 58a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 59a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 60e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 61e5e7ea3cSJaegeuk Kim int i; 62e5e7ea3cSJaegeuk Kim 63e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6467298804SChao Yu mem_size += (sbi->im[i].ino_num * 6567298804SChao Yu sizeof(struct ino_entry)) >> PAGE_CACHE_SHIFT; 66e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 67429511cdSChao Yu } else if (type == EXTENT_CACHE) { 687441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 697441ccefSJaegeuk Kim sizeof(struct extent_tree) + 70429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 71429511cdSChao Yu sizeof(struct extent_node)) >> PAGE_CACHE_SHIFT; 72429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 731e84371fSJaegeuk Kim } else { 741663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 751663cae4SJaegeuk Kim return true; 766fb03f3aSJaegeuk Kim } 776fb03f3aSJaegeuk Kim return res; 78cdfc41c1SJaegeuk Kim } 79cdfc41c1SJaegeuk Kim 80e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 81e05df3b1SJaegeuk Kim { 82e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 83e05df3b1SJaegeuk Kim unsigned int long flags; 84e05df3b1SJaegeuk Kim 85e05df3b1SJaegeuk Kim if (PageDirty(page)) { 86e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 87e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 88e05df3b1SJaegeuk Kim page_index(page), 89e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 90e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 91e05df3b1SJaegeuk Kim 92e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 934081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 94e05df3b1SJaegeuk Kim } 95e05df3b1SJaegeuk Kim ClearPageUptodate(page); 96e05df3b1SJaegeuk Kim } 97e05df3b1SJaegeuk Kim 98e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 99e05df3b1SJaegeuk Kim { 100e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 101e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 102e05df3b1SJaegeuk Kim } 103e05df3b1SJaegeuk Kim 104e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 105e05df3b1SJaegeuk Kim { 106e05df3b1SJaegeuk Kim struct page *src_page; 107e05df3b1SJaegeuk Kim struct page *dst_page; 108e05df3b1SJaegeuk Kim pgoff_t src_off; 109e05df3b1SJaegeuk Kim pgoff_t dst_off; 110e05df3b1SJaegeuk Kim void *src_addr; 111e05df3b1SJaegeuk Kim void *dst_addr; 112e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 113e05df3b1SJaegeuk Kim 114e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 115e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 116e05df3b1SJaegeuk Kim 117e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 118e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 119e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 121e05df3b1SJaegeuk Kim 122e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 123e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 124e05df3b1SJaegeuk Kim memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); 125e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 126e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 127e05df3b1SJaegeuk Kim 128e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim return dst_page; 131e05df3b1SJaegeuk Kim } 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 134e05df3b1SJaegeuk Kim { 135e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 136e05df3b1SJaegeuk Kim } 137e05df3b1SJaegeuk Kim 138e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 139e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 140e05df3b1SJaegeuk Kim { 141e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 142e05df3b1SJaegeuk Kim } 143e05df3b1SJaegeuk Kim 144e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 145e05df3b1SJaegeuk Kim { 146e05df3b1SJaegeuk Kim list_del(&e->list); 147e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 148e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 149e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 150e05df3b1SJaegeuk Kim } 151e05df3b1SJaegeuk Kim 152309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 153309cc2b6SJaegeuk Kim struct nat_entry *ne) 154309cc2b6SJaegeuk Kim { 155309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 156309cc2b6SJaegeuk Kim struct nat_entry_set *head; 157309cc2b6SJaegeuk Kim 158309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 159309cc2b6SJaegeuk Kim return; 1609be32d72SJaegeuk Kim 161309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 162309cc2b6SJaegeuk Kim if (!head) { 16380c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 164309cc2b6SJaegeuk Kim 165309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 166309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 167309cc2b6SJaegeuk Kim head->set = set; 168309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1699be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 170309cc2b6SJaegeuk Kim } 171309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 172309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 173309cc2b6SJaegeuk Kim head->entry_cnt++; 174309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 175309cc2b6SJaegeuk Kim } 176309cc2b6SJaegeuk Kim 177309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 178309cc2b6SJaegeuk Kim struct nat_entry *ne) 179309cc2b6SJaegeuk Kim { 18020d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 181309cc2b6SJaegeuk Kim struct nat_entry_set *head; 182309cc2b6SJaegeuk Kim 183309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 184309cc2b6SJaegeuk Kim if (head) { 185309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 186309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 187309cc2b6SJaegeuk Kim head->entry_cnt--; 188309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 189309cc2b6SJaegeuk Kim } 190309cc2b6SJaegeuk Kim } 191309cc2b6SJaegeuk Kim 192309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 193309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 194309cc2b6SJaegeuk Kim { 195309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 196309cc2b6SJaegeuk Kim start, nr); 197309cc2b6SJaegeuk Kim } 198309cc2b6SJaegeuk Kim 1992dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2002dcf51abSJaegeuk Kim { 2012dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2022dcf51abSJaegeuk Kim struct nat_entry *e; 2032dcf51abSJaegeuk Kim bool need = false; 2042dcf51abSJaegeuk Kim 2052dcf51abSJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2062dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2072dcf51abSJaegeuk Kim if (e) { 2082dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2092dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2102dcf51abSJaegeuk Kim need = true; 2112dcf51abSJaegeuk Kim } 2122dcf51abSJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2132dcf51abSJaegeuk Kim return need; 2142dcf51abSJaegeuk Kim } 2152dcf51abSJaegeuk Kim 21688bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 217e05df3b1SJaegeuk Kim { 218e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 219e05df3b1SJaegeuk Kim struct nat_entry *e; 22088bd02c9SJaegeuk Kim bool is_cp = true; 221e05df3b1SJaegeuk Kim 2228b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 223e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2247ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22588bd02c9SJaegeuk Kim is_cp = false; 2268b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 227e05df3b1SJaegeuk Kim return is_cp; 228e05df3b1SJaegeuk Kim } 229e05df3b1SJaegeuk Kim 23088bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 231b6fe5873SJaegeuk Kim { 232b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 233b6fe5873SJaegeuk Kim struct nat_entry *e; 23488bd02c9SJaegeuk Kim bool need_update = true; 235b6fe5873SJaegeuk Kim 2368b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23788bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 23888bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23988bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24088bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24188bd02c9SJaegeuk Kim need_update = false; 2428b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24388bd02c9SJaegeuk Kim return need_update; 244b6fe5873SJaegeuk Kim } 245b6fe5873SJaegeuk Kim 246e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 247e05df3b1SJaegeuk Kim { 248e05df3b1SJaegeuk Kim struct nat_entry *new; 249e05df3b1SJaegeuk Kim 25080c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2519be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 252e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 253e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25488bd02c9SJaegeuk Kim nat_reset_flag(new); 255e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 256e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 257e05df3b1SJaegeuk Kim return new; 258e05df3b1SJaegeuk Kim } 259e05df3b1SJaegeuk Kim 260e05df3b1SJaegeuk Kim static void cache_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 261e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 262e05df3b1SJaegeuk Kim { 263e05df3b1SJaegeuk Kim struct nat_entry *e; 2649be32d72SJaegeuk Kim 265e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 266e05df3b1SJaegeuk Kim if (!e) { 267e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 26894dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 269e05df3b1SJaegeuk Kim } 270e05df3b1SJaegeuk Kim } 271e05df3b1SJaegeuk Kim 272e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 273479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 274e05df3b1SJaegeuk Kim { 275e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 276e05df3b1SJaegeuk Kim struct nat_entry *e; 2779be32d72SJaegeuk Kim 2788b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 279e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 280e05df3b1SJaegeuk Kim if (!e) { 281e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2825c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2839850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 284e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 285e05df3b1SJaegeuk Kim /* 286e05df3b1SJaegeuk Kim * when nid is reallocated, 287e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 288e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 289e05df3b1SJaegeuk Kim */ 2905c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2919850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 292e05df3b1SJaegeuk Kim } 293e05df3b1SJaegeuk Kim 294e05df3b1SJaegeuk Kim /* sanity check */ 2959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 2969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 297e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 2989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 299e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3009850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 301e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 302e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 303e05df3b1SJaegeuk Kim 304e1c42045Sarter97 /* increment version no as node is removed */ 305e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 306e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 307e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 30826834466SJaegeuk Kim 30926834466SJaegeuk Kim /* in order to reuse the nid */ 31026834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 31126834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 312e05df3b1SJaegeuk Kim } 313e05df3b1SJaegeuk Kim 314e05df3b1SJaegeuk Kim /* change address */ 315e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 31688bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 31788bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 318e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 319479f40c4SJaegeuk Kim 320479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 321d5b692b7SChao Yu if (ni->nid != ni->ino) 322479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 32388bd02c9SJaegeuk Kim if (e) { 32488bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 32588bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 32688bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 32788bd02c9SJaegeuk Kim } 3288b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 329e05df3b1SJaegeuk Kim } 330e05df3b1SJaegeuk Kim 3314660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 332e05df3b1SJaegeuk Kim { 333e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3341b38dc8eSJaegeuk Kim int nr = nr_shrink; 335e05df3b1SJaegeuk Kim 3361b38dc8eSJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 337e05df3b1SJaegeuk Kim return 0; 338e05df3b1SJaegeuk Kim 339e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 340e05df3b1SJaegeuk Kim struct nat_entry *ne; 341e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 342e05df3b1SJaegeuk Kim struct nat_entry, list); 343e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 344e05df3b1SJaegeuk Kim nr_shrink--; 345e05df3b1SJaegeuk Kim } 3468b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3471b38dc8eSJaegeuk Kim return nr - nr_shrink; 348e05df3b1SJaegeuk Kim } 349e05df3b1SJaegeuk Kim 3500a8165d7SJaegeuk Kim /* 351e1c42045Sarter97 * This function always returns success 352e05df3b1SJaegeuk Kim */ 353e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 354e05df3b1SJaegeuk Kim { 355e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 356e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 357e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 358e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 359e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 360e05df3b1SJaegeuk Kim struct page *page = NULL; 361e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 362e05df3b1SJaegeuk Kim struct nat_entry *e; 363e05df3b1SJaegeuk Kim int i; 364e05df3b1SJaegeuk Kim 365e05df3b1SJaegeuk Kim ni->nid = nid; 366e05df3b1SJaegeuk Kim 367e05df3b1SJaegeuk Kim /* Check nat cache */ 3688b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 369e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 370e05df3b1SJaegeuk Kim if (e) { 371e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 372e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 373e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 374e05df3b1SJaegeuk Kim } 3758b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 376e05df3b1SJaegeuk Kim if (e) 377e05df3b1SJaegeuk Kim return; 378e05df3b1SJaegeuk Kim 3793547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3803547ea96SJaegeuk Kim 381a5131193SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 382a5131193SJaegeuk Kim 383e05df3b1SJaegeuk Kim /* Check current segment summary */ 384e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 385e05df3b1SJaegeuk Kim i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0); 386e05df3b1SJaegeuk Kim if (i >= 0) { 387e05df3b1SJaegeuk Kim ne = nat_in_journal(sum, i); 388e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 389e05df3b1SJaegeuk Kim } 390e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 391e05df3b1SJaegeuk Kim if (i >= 0) 392e05df3b1SJaegeuk Kim goto cache; 393e05df3b1SJaegeuk Kim 394e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 395e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 396e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 397e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 398e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 399e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 400e05df3b1SJaegeuk Kim cache: 401e05df3b1SJaegeuk Kim /* cache nat entry */ 402e05df3b1SJaegeuk Kim cache_nat_entry(NM_I(sbi), nid, &ne); 403a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 404e05df3b1SJaegeuk Kim } 405e05df3b1SJaegeuk Kim 4060a8165d7SJaegeuk Kim /* 407e05df3b1SJaegeuk Kim * The maximum depth is four. 408e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 409e05df3b1SJaegeuk Kim */ 410de93653fSJaegeuk Kim static int get_node_path(struct f2fs_inode_info *fi, long block, 411de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 412e05df3b1SJaegeuk Kim { 413de93653fSJaegeuk Kim const long direct_index = ADDRS_PER_INODE(fi); 414e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 415e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 416e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 417e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 418e05df3b1SJaegeuk Kim int n = 0; 419e05df3b1SJaegeuk Kim int level = 0; 420e05df3b1SJaegeuk Kim 421e05df3b1SJaegeuk Kim noffset[0] = 0; 422e05df3b1SJaegeuk Kim 423e05df3b1SJaegeuk Kim if (block < direct_index) { 42425c0a6e5SNamjae Jeon offset[n] = block; 425e05df3b1SJaegeuk Kim goto got; 426e05df3b1SJaegeuk Kim } 427e05df3b1SJaegeuk Kim block -= direct_index; 428e05df3b1SJaegeuk Kim if (block < direct_blks) { 429e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 430e05df3b1SJaegeuk Kim noffset[n] = 1; 43125c0a6e5SNamjae Jeon offset[n] = block; 432e05df3b1SJaegeuk Kim level = 1; 433e05df3b1SJaegeuk Kim goto got; 434e05df3b1SJaegeuk Kim } 435e05df3b1SJaegeuk Kim block -= direct_blks; 436e05df3b1SJaegeuk Kim if (block < direct_blks) { 437e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 438e05df3b1SJaegeuk Kim noffset[n] = 2; 43925c0a6e5SNamjae Jeon offset[n] = block; 440e05df3b1SJaegeuk Kim level = 1; 441e05df3b1SJaegeuk Kim goto got; 442e05df3b1SJaegeuk Kim } 443e05df3b1SJaegeuk Kim block -= direct_blks; 444e05df3b1SJaegeuk Kim if (block < indirect_blks) { 445e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 446e05df3b1SJaegeuk Kim noffset[n] = 3; 447e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 448e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 44925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 450e05df3b1SJaegeuk Kim level = 2; 451e05df3b1SJaegeuk Kim goto got; 452e05df3b1SJaegeuk Kim } 453e05df3b1SJaegeuk Kim block -= indirect_blks; 454e05df3b1SJaegeuk Kim if (block < indirect_blks) { 455e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 456e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 457e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 458e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 45925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 460e05df3b1SJaegeuk Kim level = 2; 461e05df3b1SJaegeuk Kim goto got; 462e05df3b1SJaegeuk Kim } 463e05df3b1SJaegeuk Kim block -= indirect_blks; 464e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 465e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 466e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 467e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 468e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 469e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 470e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 471e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 472e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 473e05df3b1SJaegeuk Kim offset[n - 1]; 47425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 475e05df3b1SJaegeuk Kim level = 3; 476e05df3b1SJaegeuk Kim goto got; 477e05df3b1SJaegeuk Kim } else { 478e05df3b1SJaegeuk Kim BUG(); 479e05df3b1SJaegeuk Kim } 480e05df3b1SJaegeuk Kim got: 481e05df3b1SJaegeuk Kim return level; 482e05df3b1SJaegeuk Kim } 483e05df3b1SJaegeuk Kim 484e05df3b1SJaegeuk Kim /* 485e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 4864f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 4874f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 48839936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 489e05df3b1SJaegeuk Kim */ 490266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 491e05df3b1SJaegeuk Kim { 4924081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 493e05df3b1SJaegeuk Kim struct page *npage[4]; 494f1a3b98eSJaegeuk Kim struct page *parent = NULL; 495e05df3b1SJaegeuk Kim int offset[4]; 496e05df3b1SJaegeuk Kim unsigned int noffset[4]; 497e05df3b1SJaegeuk Kim nid_t nids[4]; 498e05df3b1SJaegeuk Kim int level, i; 499e05df3b1SJaegeuk Kim int err = 0; 500e05df3b1SJaegeuk Kim 501de93653fSJaegeuk Kim level = get_node_path(F2FS_I(dn->inode), index, offset, noffset); 502e05df3b1SJaegeuk Kim 503e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5041646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5051646cfacSJaegeuk Kim 5061646cfacSJaegeuk Kim if (!npage[0]) { 507e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 508e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 509e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5101646cfacSJaegeuk Kim } 511f1a3b98eSJaegeuk Kim 512f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 513f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 51476629165SJaegeuk Kim err = -ENOENT; 515f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 516f1a3b98eSJaegeuk Kim goto release_out; 517f1a3b98eSJaegeuk Kim } 518f1a3b98eSJaegeuk Kim 519e05df3b1SJaegeuk Kim parent = npage[0]; 52052c2db3fSChangman Lee if (level != 0) 521e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 522e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 523e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 524e05df3b1SJaegeuk Kim 525e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 526e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 527e05df3b1SJaegeuk Kim bool done = false; 528e05df3b1SJaegeuk Kim 529266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 530e05df3b1SJaegeuk Kim /* alloc new node */ 531e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 532e05df3b1SJaegeuk Kim err = -ENOSPC; 533e05df3b1SJaegeuk Kim goto release_pages; 534e05df3b1SJaegeuk Kim } 535e05df3b1SJaegeuk Kim 536e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5378ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 538e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 539e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 540e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 541e05df3b1SJaegeuk Kim goto release_pages; 542e05df3b1SJaegeuk Kim } 543e05df3b1SJaegeuk Kim 544e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 545e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 546e05df3b1SJaegeuk Kim done = true; 547266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 548e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 549e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 550e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 551e05df3b1SJaegeuk Kim goto release_pages; 552e05df3b1SJaegeuk Kim } 553e05df3b1SJaegeuk Kim done = true; 554e05df3b1SJaegeuk Kim } 555e05df3b1SJaegeuk Kim if (i == 1) { 556e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 557e05df3b1SJaegeuk Kim unlock_page(parent); 558e05df3b1SJaegeuk Kim } else { 559e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 560e05df3b1SJaegeuk Kim } 561e05df3b1SJaegeuk Kim 562e05df3b1SJaegeuk Kim if (!done) { 563e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 564e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 565e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 566e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 567e05df3b1SJaegeuk Kim goto release_out; 568e05df3b1SJaegeuk Kim } 569e05df3b1SJaegeuk Kim } 570e05df3b1SJaegeuk Kim if (i < level) { 571e05df3b1SJaegeuk Kim parent = npage[i]; 572e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 573e05df3b1SJaegeuk Kim } 574e05df3b1SJaegeuk Kim } 575e05df3b1SJaegeuk Kim dn->nid = nids[level]; 576e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 577e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 578e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 579e05df3b1SJaegeuk Kim return 0; 580e05df3b1SJaegeuk Kim 581e05df3b1SJaegeuk Kim release_pages: 582e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 583e05df3b1SJaegeuk Kim if (i > 1) 584e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 585e05df3b1SJaegeuk Kim release_out: 586e05df3b1SJaegeuk Kim dn->inode_page = NULL; 587e05df3b1SJaegeuk Kim dn->node_page = NULL; 588e05df3b1SJaegeuk Kim return err; 589e05df3b1SJaegeuk Kim } 590e05df3b1SJaegeuk Kim 591e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 592e05df3b1SJaegeuk Kim { 5934081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 594e05df3b1SJaegeuk Kim struct node_info ni; 595e05df3b1SJaegeuk Kim 596e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 59771e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 5989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 59971e9fec5SJaegeuk Kim goto invalidate; 60071e9fec5SJaegeuk Kim } 6019850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 602e05df3b1SJaegeuk Kim 603e05df3b1SJaegeuk Kim /* Deallocate node address */ 60471e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 605ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 606479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 607e05df3b1SJaegeuk Kim 608e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 609e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 610e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 611e05df3b1SJaegeuk Kim } else { 612e05df3b1SJaegeuk Kim sync_inode_page(dn); 613e05df3b1SJaegeuk Kim } 61471e9fec5SJaegeuk Kim invalidate: 615e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 616caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 617e05df3b1SJaegeuk Kim 618e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 619bf39c00aSJaegeuk Kim 620bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 621bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 622bf39c00aSJaegeuk Kim 623e05df3b1SJaegeuk Kim dn->node_page = NULL; 62451dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 625e05df3b1SJaegeuk Kim } 626e05df3b1SJaegeuk Kim 627e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 628e05df3b1SJaegeuk Kim { 629e05df3b1SJaegeuk Kim struct page *page; 630e05df3b1SJaegeuk Kim 631e05df3b1SJaegeuk Kim if (dn->nid == 0) 632e05df3b1SJaegeuk Kim return 1; 633e05df3b1SJaegeuk Kim 634e05df3b1SJaegeuk Kim /* get direct node */ 6354081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 636e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 637e05df3b1SJaegeuk Kim return 1; 638e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 639e05df3b1SJaegeuk Kim return PTR_ERR(page); 640e05df3b1SJaegeuk Kim 641e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 642e05df3b1SJaegeuk Kim dn->node_page = page; 643e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 644e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 645e05df3b1SJaegeuk Kim truncate_node(dn); 646e05df3b1SJaegeuk Kim return 1; 647e05df3b1SJaegeuk Kim } 648e05df3b1SJaegeuk Kim 649e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 650e05df3b1SJaegeuk Kim int ofs, int depth) 651e05df3b1SJaegeuk Kim { 652e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 653e05df3b1SJaegeuk Kim struct page *page; 654e05df3b1SJaegeuk Kim struct f2fs_node *rn; 655e05df3b1SJaegeuk Kim nid_t child_nid; 656e05df3b1SJaegeuk Kim unsigned int child_nofs; 657e05df3b1SJaegeuk Kim int freed = 0; 658e05df3b1SJaegeuk Kim int i, ret; 659e05df3b1SJaegeuk Kim 660e05df3b1SJaegeuk Kim if (dn->nid == 0) 661e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 662e05df3b1SJaegeuk Kim 66351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 66451dd6249SNamjae Jeon 6654081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 66651dd6249SNamjae Jeon if (IS_ERR(page)) { 66751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 668e05df3b1SJaegeuk Kim return PTR_ERR(page); 66951dd6249SNamjae Jeon } 670e05df3b1SJaegeuk Kim 67145590710SGu Zheng rn = F2FS_NODE(page); 672e05df3b1SJaegeuk Kim if (depth < 3) { 673e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 674e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 675e05df3b1SJaegeuk Kim if (child_nid == 0) 676e05df3b1SJaegeuk Kim continue; 677e05df3b1SJaegeuk Kim rdn.nid = child_nid; 678e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 679e05df3b1SJaegeuk Kim if (ret < 0) 680e05df3b1SJaegeuk Kim goto out_err; 68112719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 68293bae099SJaegeuk Kim dn->node_changed = true; 683e05df3b1SJaegeuk Kim } 684e05df3b1SJaegeuk Kim } else { 685e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 686e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 687e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 688e05df3b1SJaegeuk Kim if (child_nid == 0) { 689e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 690e05df3b1SJaegeuk Kim continue; 691e05df3b1SJaegeuk Kim } 692e05df3b1SJaegeuk Kim rdn.nid = child_nid; 693e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 694e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 69512719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 69693bae099SJaegeuk Kim dn->node_changed = true; 697e05df3b1SJaegeuk Kim child_nofs += ret; 698e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 699e05df3b1SJaegeuk Kim goto out_err; 700e05df3b1SJaegeuk Kim } 701e05df3b1SJaegeuk Kim } 702e05df3b1SJaegeuk Kim freed = child_nofs; 703e05df3b1SJaegeuk Kim } 704e05df3b1SJaegeuk Kim 705e05df3b1SJaegeuk Kim if (!ofs) { 706e05df3b1SJaegeuk Kim /* remove current indirect node */ 707e05df3b1SJaegeuk Kim dn->node_page = page; 708e05df3b1SJaegeuk Kim truncate_node(dn); 709e05df3b1SJaegeuk Kim freed++; 710e05df3b1SJaegeuk Kim } else { 711e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 712e05df3b1SJaegeuk Kim } 71351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 714e05df3b1SJaegeuk Kim return freed; 715e05df3b1SJaegeuk Kim 716e05df3b1SJaegeuk Kim out_err: 717e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 71851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 719e05df3b1SJaegeuk Kim return ret; 720e05df3b1SJaegeuk Kim } 721e05df3b1SJaegeuk Kim 722e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 723e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 724e05df3b1SJaegeuk Kim { 725e05df3b1SJaegeuk Kim struct page *pages[2]; 726e05df3b1SJaegeuk Kim nid_t nid[3]; 727e05df3b1SJaegeuk Kim nid_t child_nid; 728e05df3b1SJaegeuk Kim int err = 0; 729e05df3b1SJaegeuk Kim int i; 730e05df3b1SJaegeuk Kim int idx = depth - 2; 731e05df3b1SJaegeuk Kim 732e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 733e05df3b1SJaegeuk Kim if (!nid[0]) 734e05df3b1SJaegeuk Kim return 0; 735e05df3b1SJaegeuk Kim 736e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 737a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 738e1c42045Sarter97 /* reference count'll be increased */ 7394081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 740e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 741e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 742a225dca3Sshifei10.ge idx = i - 1; 743e05df3b1SJaegeuk Kim goto fail; 744e05df3b1SJaegeuk Kim } 745e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 746e05df3b1SJaegeuk Kim } 747e05df3b1SJaegeuk Kim 748e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 749a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 750e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 751e05df3b1SJaegeuk Kim if (!child_nid) 752e05df3b1SJaegeuk Kim continue; 753e05df3b1SJaegeuk Kim dn->nid = child_nid; 754e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 755e05df3b1SJaegeuk Kim if (err < 0) 756e05df3b1SJaegeuk Kim goto fail; 75712719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 75893bae099SJaegeuk Kim dn->node_changed = true; 759e05df3b1SJaegeuk Kim } 760e05df3b1SJaegeuk Kim 761a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 762e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 763e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 764e05df3b1SJaegeuk Kim truncate_node(dn); 765e05df3b1SJaegeuk Kim } else { 766e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 767e05df3b1SJaegeuk Kim } 768e05df3b1SJaegeuk Kim offset[idx]++; 769a225dca3Sshifei10.ge offset[idx + 1] = 0; 770a225dca3Sshifei10.ge idx--; 771e05df3b1SJaegeuk Kim fail: 772a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 773e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 77451dd6249SNamjae Jeon 77551dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 77651dd6249SNamjae Jeon 777e05df3b1SJaegeuk Kim return err; 778e05df3b1SJaegeuk Kim } 779e05df3b1SJaegeuk Kim 7800a8165d7SJaegeuk Kim /* 781e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 782e05df3b1SJaegeuk Kim */ 783e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 784e05df3b1SJaegeuk Kim { 7854081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 786e05df3b1SJaegeuk Kim int err = 0, cont = 1; 787e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 7887dd690c8SJaegeuk Kim unsigned int nofs = 0; 78958bfaf44SJaegeuk Kim struct f2fs_inode *ri; 790e05df3b1SJaegeuk Kim struct dnode_of_data dn; 791e05df3b1SJaegeuk Kim struct page *page; 792e05df3b1SJaegeuk Kim 79351dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 79451dd6249SNamjae Jeon 795de93653fSJaegeuk Kim level = get_node_path(F2FS_I(inode), from, offset, noffset); 796afcb7ca0SJaegeuk Kim restart: 797e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 79851dd6249SNamjae Jeon if (IS_ERR(page)) { 79951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 800e05df3b1SJaegeuk Kim return PTR_ERR(page); 80151dd6249SNamjae Jeon } 802e05df3b1SJaegeuk Kim 803e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 804e05df3b1SJaegeuk Kim unlock_page(page); 805e05df3b1SJaegeuk Kim 80658bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 807e05df3b1SJaegeuk Kim switch (level) { 808e05df3b1SJaegeuk Kim case 0: 809e05df3b1SJaegeuk Kim case 1: 810e05df3b1SJaegeuk Kim nofs = noffset[1]; 811e05df3b1SJaegeuk Kim break; 812e05df3b1SJaegeuk Kim case 2: 813e05df3b1SJaegeuk Kim nofs = noffset[1]; 814e05df3b1SJaegeuk Kim if (!offset[level - 1]) 815e05df3b1SJaegeuk Kim goto skip_partial; 81658bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 817e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 818e05df3b1SJaegeuk Kim goto fail; 819e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 820e05df3b1SJaegeuk Kim break; 821e05df3b1SJaegeuk Kim case 3: 822e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 823e05df3b1SJaegeuk Kim if (!offset[level - 1]) 824e05df3b1SJaegeuk Kim goto skip_partial; 82558bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 826e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 827e05df3b1SJaegeuk Kim goto fail; 828e05df3b1SJaegeuk Kim break; 829e05df3b1SJaegeuk Kim default: 830e05df3b1SJaegeuk Kim BUG(); 831e05df3b1SJaegeuk Kim } 832e05df3b1SJaegeuk Kim 833e05df3b1SJaegeuk Kim skip_partial: 834e05df3b1SJaegeuk Kim while (cont) { 83558bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 836e05df3b1SJaegeuk Kim switch (offset[0]) { 837e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 838e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 839e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 840e05df3b1SJaegeuk Kim break; 841e05df3b1SJaegeuk Kim 842e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 843e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 844e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 845e05df3b1SJaegeuk Kim break; 846e05df3b1SJaegeuk Kim 847e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 848e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 849e05df3b1SJaegeuk Kim cont = 0; 850e05df3b1SJaegeuk Kim break; 851e05df3b1SJaegeuk Kim 852e05df3b1SJaegeuk Kim default: 853e05df3b1SJaegeuk Kim BUG(); 854e05df3b1SJaegeuk Kim } 855e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 856e05df3b1SJaegeuk Kim goto fail; 857e05df3b1SJaegeuk Kim if (offset[1] == 0 && 85858bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 859e05df3b1SJaegeuk Kim lock_page(page); 8604ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 861afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 862afcb7ca0SJaegeuk Kim goto restart; 863afcb7ca0SJaegeuk Kim } 8643cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 86558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 866e05df3b1SJaegeuk Kim set_page_dirty(page); 867e05df3b1SJaegeuk Kim unlock_page(page); 868e05df3b1SJaegeuk Kim } 869e05df3b1SJaegeuk Kim offset[1] = 0; 870e05df3b1SJaegeuk Kim offset[0]++; 871e05df3b1SJaegeuk Kim nofs += err; 872e05df3b1SJaegeuk Kim } 873e05df3b1SJaegeuk Kim fail: 874e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 87551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 876e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 877e05df3b1SJaegeuk Kim } 878e05df3b1SJaegeuk Kim 8794f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 8804f16fb0fSJaegeuk Kim { 8814081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 8824f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 8834f16fb0fSJaegeuk Kim struct dnode_of_data dn; 8844f16fb0fSJaegeuk Kim struct page *npage; 8854f16fb0fSJaegeuk Kim 8864f16fb0fSJaegeuk Kim if (!nid) 8874f16fb0fSJaegeuk Kim return 0; 8884f16fb0fSJaegeuk Kim 8894f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 8904f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 8914f16fb0fSJaegeuk Kim return PTR_ERR(npage); 8924f16fb0fSJaegeuk Kim 8934f16fb0fSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = 0; 89465985d93SJaegeuk Kim 89565985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 89665985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 89765985d93SJaegeuk Kim 8984f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 8994f16fb0fSJaegeuk Kim 9004f16fb0fSJaegeuk Kim if (page) 90101d2d1aaSChao Yu dn.inode_page_locked = true; 9024f16fb0fSJaegeuk Kim truncate_node(&dn); 9034f16fb0fSJaegeuk Kim return 0; 9044f16fb0fSJaegeuk Kim } 9054f16fb0fSJaegeuk Kim 90639936837SJaegeuk Kim /* 9074f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9084f4124d0SChao Yu * f2fs_unlock_op(). 90939936837SJaegeuk Kim */ 91013ec7297SChao Yu int remove_inode_page(struct inode *inode) 911e05df3b1SJaegeuk Kim { 912e05df3b1SJaegeuk Kim struct dnode_of_data dn; 91313ec7297SChao Yu int err; 914e05df3b1SJaegeuk Kim 915c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 91613ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 91713ec7297SChao Yu if (err) 91813ec7297SChao Yu return err; 919e05df3b1SJaegeuk Kim 92013ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 92113ec7297SChao Yu if (err) { 922c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 92313ec7297SChao Yu return err; 924e05df3b1SJaegeuk Kim } 925c2e69583SJaegeuk Kim 926c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 927c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 928c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 929c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 930c2e69583SJaegeuk Kim 931e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9329850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9339850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 934c2e69583SJaegeuk Kim 935c2e69583SJaegeuk Kim /* will put inode & node pages */ 936e05df3b1SJaegeuk Kim truncate_node(&dn); 93713ec7297SChao Yu return 0; 938e05df3b1SJaegeuk Kim } 939e05df3b1SJaegeuk Kim 940a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 941e05df3b1SJaegeuk Kim { 942e05df3b1SJaegeuk Kim struct dnode_of_data dn; 943e05df3b1SJaegeuk Kim 944e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 945e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 94644a83ff6SJaegeuk Kim 94744a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 9488ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 949e05df3b1SJaegeuk Kim } 950e05df3b1SJaegeuk Kim 9518ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 9528ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 953e05df3b1SJaegeuk Kim { 9544081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 955e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 956e05df3b1SJaegeuk Kim struct page *page; 957e05df3b1SJaegeuk Kim int err; 958e05df3b1SJaegeuk Kim 9596bacf52fSJaegeuk Kim if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) 960e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 961e05df3b1SJaegeuk Kim 96254b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), dn->nid); 963e05df3b1SJaegeuk Kim if (!page) 964e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 965e05df3b1SJaegeuk Kim 9666bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 9679c02740cSJaegeuk Kim err = -ENOSPC; 9689c02740cSJaegeuk Kim goto fail; 9699c02740cSJaegeuk Kim } 970e05df3b1SJaegeuk Kim 9719c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 972e05df3b1SJaegeuk Kim 973e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 9749850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 975e05df3b1SJaegeuk Kim new_ni = old_ni; 976e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 977479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 9789c02740cSJaegeuk Kim 97954b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 9809c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 981398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 9829c02740cSJaegeuk Kim SetPageUptodate(page); 98312719ae1SJaegeuk Kim if (set_page_dirty(page)) 98412719ae1SJaegeuk Kim dn->node_changed = true; 985e05df3b1SJaegeuk Kim 9864bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 987479bd73aSJaegeuk Kim F2FS_I(dn->inode)->i_xattr_nid = dn->nid; 988479bd73aSJaegeuk Kim 989e05df3b1SJaegeuk Kim dn->node_page = page; 9908ae8f162SJaegeuk Kim if (ipage) 9918ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 9928ae8f162SJaegeuk Kim else 993e05df3b1SJaegeuk Kim sync_inode_page(dn); 994e05df3b1SJaegeuk Kim if (ofs == 0) 995e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 996e05df3b1SJaegeuk Kim 997e05df3b1SJaegeuk Kim return page; 998e05df3b1SJaegeuk Kim 999e05df3b1SJaegeuk Kim fail: 100071e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1001e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1002e05df3b1SJaegeuk Kim return ERR_PTR(err); 1003e05df3b1SJaegeuk Kim } 1004e05df3b1SJaegeuk Kim 100556ae674cSJaegeuk Kim /* 100656ae674cSJaegeuk Kim * Caller should do after getting the following values. 100756ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 100886531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 100956ae674cSJaegeuk Kim */ 101093dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 1011e05df3b1SJaegeuk Kim { 10124081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1013e05df3b1SJaegeuk Kim struct node_info ni; 1014cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 101505ca3632SJaegeuk Kim .sbi = sbi, 1016cf04e8ebSJaegeuk Kim .type = NODE, 1017cf04e8ebSJaegeuk Kim .rw = rw, 101805ca3632SJaegeuk Kim .page = page, 10194375a336SJaegeuk Kim .encrypted_page = NULL, 1020cf04e8ebSJaegeuk Kim }; 1021e05df3b1SJaegeuk Kim 1022e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1023e05df3b1SJaegeuk Kim 10246bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10252bca1e23SJaegeuk Kim ClearPageUptodate(page); 1026e05df3b1SJaegeuk Kim return -ENOENT; 1027393ff91fSJaegeuk Kim } 1028393ff91fSJaegeuk Kim 102956ae674cSJaegeuk Kim if (PageUptodate(page)) 103056ae674cSJaegeuk Kim return LOCKED_PAGE; 1031393ff91fSJaegeuk Kim 1032cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 103305ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1034e05df3b1SJaegeuk Kim } 1035e05df3b1SJaegeuk Kim 10360a8165d7SJaegeuk Kim /* 1037e05df3b1SJaegeuk Kim * Readahead a node page 1038e05df3b1SJaegeuk Kim */ 1039e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1040e05df3b1SJaegeuk Kim { 1041e05df3b1SJaegeuk Kim struct page *apage; 104256ae674cSJaegeuk Kim int err; 1043e05df3b1SJaegeuk Kim 1044e8458725SChao Yu if (!nid) 1045e8458725SChao Yu return; 1046e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1047e8458725SChao Yu 10484ef51a8fSJaegeuk Kim apage = find_get_page(NODE_MAPPING(sbi), nid); 1049393ff91fSJaegeuk Kim if (apage && PageUptodate(apage)) { 1050393ff91fSJaegeuk Kim f2fs_put_page(apage, 0); 1051393ff91fSJaegeuk Kim return; 1052393ff91fSJaegeuk Kim } 1053e05df3b1SJaegeuk Kim f2fs_put_page(apage, 0); 1054e05df3b1SJaegeuk Kim 10554ef51a8fSJaegeuk Kim apage = grab_cache_page(NODE_MAPPING(sbi), nid); 1056e05df3b1SJaegeuk Kim if (!apage) 1057e05df3b1SJaegeuk Kim return; 1058e05df3b1SJaegeuk Kim 105956ae674cSJaegeuk Kim err = read_node_page(apage, READA); 106086531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1061e05df3b1SJaegeuk Kim } 1062e05df3b1SJaegeuk Kim 10630e022ea8SChao Yu /* 10640e022ea8SChao Yu * readahead MAX_RA_NODE number of node pages. 10650e022ea8SChao Yu */ 10660e022ea8SChao Yu void ra_node_pages(struct page *parent, int start) 10670e022ea8SChao Yu { 10680e022ea8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 10690e022ea8SChao Yu struct blk_plug plug; 10700e022ea8SChao Yu int i, end; 10710e022ea8SChao Yu nid_t nid; 10720e022ea8SChao Yu 10730e022ea8SChao Yu blk_start_plug(&plug); 10740e022ea8SChao Yu 10750e022ea8SChao Yu /* Then, try readahead for siblings of the desired node */ 10760e022ea8SChao Yu end = start + MAX_RA_NODE; 10770e022ea8SChao Yu end = min(end, NIDS_PER_BLOCK); 10780e022ea8SChao Yu for (i = start; i < end; i++) { 10790e022ea8SChao Yu nid = get_nid(parent, i, false); 10800e022ea8SChao Yu ra_node_page(sbi, nid); 10810e022ea8SChao Yu } 10820e022ea8SChao Yu 10830e022ea8SChao Yu blk_finish_plug(&plug); 10840e022ea8SChao Yu } 10850e022ea8SChao Yu 10860e022ea8SChao Yu struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 10870e022ea8SChao Yu struct page *parent, int start) 1088e05df3b1SJaegeuk Kim { 108956ae674cSJaegeuk Kim struct page *page; 109056ae674cSJaegeuk Kim int err; 10914aa69d56SJaegeuk Kim 10924aa69d56SJaegeuk Kim if (!nid) 10934aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 10944aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1095afcb7ca0SJaegeuk Kim repeat: 109654b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1097e05df3b1SJaegeuk Kim if (!page) 1098e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1099e05df3b1SJaegeuk Kim 1100e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 110186531d6bSJaegeuk Kim if (err < 0) { 110286531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1103e05df3b1SJaegeuk Kim return ERR_PTR(err); 1104e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 1105e1c51b9fSChao Yu goto page_hit; 110686531d6bSJaegeuk Kim } 1107aaf96075SJaegeuk Kim 11080e022ea8SChao Yu if (parent) 11090e022ea8SChao Yu ra_node_pages(parent, start + 1); 11100e022ea8SChao Yu 1111e1c51b9fSChao Yu lock_page(page); 1112e1c51b9fSChao Yu 1113e1c51b9fSChao Yu if (unlikely(!PageUptodate(page))) { 1114393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1115393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1116393ff91fSJaegeuk Kim } 11174ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1118afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1119afcb7ca0SJaegeuk Kim goto repeat; 1120afcb7ca0SJaegeuk Kim } 1121e1c51b9fSChao Yu page_hit: 1122e1c51b9fSChao Yu f2fs_bug_on(sbi, nid != nid_of_node(page)); 1123e05df3b1SJaegeuk Kim return page; 1124e05df3b1SJaegeuk Kim } 1125e05df3b1SJaegeuk Kim 11260e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11270e022ea8SChao Yu { 11280e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11290e022ea8SChao Yu } 11300e022ea8SChao Yu 1131e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1132e05df3b1SJaegeuk Kim { 11334081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11340e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1135e05df3b1SJaegeuk Kim 11360e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1137e05df3b1SJaegeuk Kim } 1138e05df3b1SJaegeuk Kim 1139e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1140e05df3b1SJaegeuk Kim { 114112719ae1SJaegeuk Kim int ret = 0; 114212719ae1SJaegeuk Kim 1143e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 114412719ae1SJaegeuk Kim ret = update_inode(dn->inode, dn->node_page); 1145e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1146e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1147e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 114812719ae1SJaegeuk Kim ret = update_inode(dn->inode, dn->inode_page); 1149e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1150e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1151e05df3b1SJaegeuk Kim } else { 115212719ae1SJaegeuk Kim ret = update_inode_page(dn->inode); 1153e05df3b1SJaegeuk Kim } 115412719ae1SJaegeuk Kim dn->node_changed = ret ? true: false; 1155e05df3b1SJaegeuk Kim } 1156e05df3b1SJaegeuk Kim 1157e05df3b1SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1158e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1159e05df3b1SJaegeuk Kim { 1160e05df3b1SJaegeuk Kim pgoff_t index, end; 1161e05df3b1SJaegeuk Kim struct pagevec pvec; 1162e05df3b1SJaegeuk Kim int step = ino ? 2 : 0; 1163e05df3b1SJaegeuk Kim int nwritten = 0, wrote = 0; 1164e05df3b1SJaegeuk Kim 1165e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1166e05df3b1SJaegeuk Kim 1167e05df3b1SJaegeuk Kim next_step: 1168e05df3b1SJaegeuk Kim index = 0; 1169e05df3b1SJaegeuk Kim end = LONG_MAX; 1170e05df3b1SJaegeuk Kim 1171e05df3b1SJaegeuk Kim while (index <= end) { 1172e05df3b1SJaegeuk Kim int i, nr_pages; 11734ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1174e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1175e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1176e05df3b1SJaegeuk Kim if (nr_pages == 0) 1177e05df3b1SJaegeuk Kim break; 1178e05df3b1SJaegeuk Kim 1179e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1180e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1181e05df3b1SJaegeuk Kim 11826d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 11836d5a1495SChao Yu pagevec_release(&pvec); 11846d5a1495SChao Yu return -EIO; 11856d5a1495SChao Yu } 11866d5a1495SChao Yu 1187e05df3b1SJaegeuk Kim /* 1188e05df3b1SJaegeuk Kim * flushing sequence with step: 1189e05df3b1SJaegeuk Kim * 0. indirect nodes 1190e05df3b1SJaegeuk Kim * 1. dentry dnodes 1191e05df3b1SJaegeuk Kim * 2. file dnodes 1192e05df3b1SJaegeuk Kim */ 1193e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1194e05df3b1SJaegeuk Kim continue; 1195e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1196e05df3b1SJaegeuk Kim is_cold_node(page))) 1197e05df3b1SJaegeuk Kim continue; 1198e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1199e05df3b1SJaegeuk Kim !is_cold_node(page))) 1200e05df3b1SJaegeuk Kim continue; 1201e05df3b1SJaegeuk Kim 1202e05df3b1SJaegeuk Kim /* 1203e05df3b1SJaegeuk Kim * If an fsync mode, 1204e05df3b1SJaegeuk Kim * we should not skip writing node pages. 1205e05df3b1SJaegeuk Kim */ 1206e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) == ino) 1207e05df3b1SJaegeuk Kim lock_page(page); 1208e05df3b1SJaegeuk Kim else if (!trylock_page(page)) 1209e05df3b1SJaegeuk Kim continue; 1210e05df3b1SJaegeuk Kim 12114ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1212e05df3b1SJaegeuk Kim continue_unlock: 1213e05df3b1SJaegeuk Kim unlock_page(page); 1214e05df3b1SJaegeuk Kim continue; 1215e05df3b1SJaegeuk Kim } 1216e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) != ino) 1217e05df3b1SJaegeuk Kim goto continue_unlock; 1218e05df3b1SJaegeuk Kim 1219e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1220e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1221e05df3b1SJaegeuk Kim goto continue_unlock; 1222e05df3b1SJaegeuk Kim } 1223e05df3b1SJaegeuk Kim 1224e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1225e05df3b1SJaegeuk Kim goto continue_unlock; 1226e05df3b1SJaegeuk Kim 1227e05df3b1SJaegeuk Kim /* called by fsync() */ 1228e05df3b1SJaegeuk Kim if (ino && IS_DNODE(page)) { 1229e05df3b1SJaegeuk Kim set_fsync_mark(page, 1); 12302dcf51abSJaegeuk Kim if (IS_INODE(page)) 12312dcf51abSJaegeuk Kim set_dentry_mark(page, 12322dcf51abSJaegeuk Kim need_dentry_mark(sbi, ino)); 1233e05df3b1SJaegeuk Kim nwritten++; 1234e05df3b1SJaegeuk Kim } else { 1235e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1236e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 1237e05df3b1SJaegeuk Kim } 123852746519SJaegeuk Kim 123952746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 124052746519SJaegeuk Kim unlock_page(page); 124152746519SJaegeuk Kim else 1242e05df3b1SJaegeuk Kim wrote++; 1243e05df3b1SJaegeuk Kim 1244e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1245e05df3b1SJaegeuk Kim break; 1246e05df3b1SJaegeuk Kim } 1247e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1248e05df3b1SJaegeuk Kim cond_resched(); 1249e05df3b1SJaegeuk Kim 1250e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1251e05df3b1SJaegeuk Kim step = 2; 1252e05df3b1SJaegeuk Kim break; 1253e05df3b1SJaegeuk Kim } 1254e05df3b1SJaegeuk Kim } 1255e05df3b1SJaegeuk Kim 1256e05df3b1SJaegeuk Kim if (step < 2) { 1257e05df3b1SJaegeuk Kim step++; 1258e05df3b1SJaegeuk Kim goto next_step; 1259e05df3b1SJaegeuk Kim } 1260e05df3b1SJaegeuk Kim 1261e05df3b1SJaegeuk Kim if (wrote) 1262458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 1263e05df3b1SJaegeuk Kim return nwritten; 1264e05df3b1SJaegeuk Kim } 1265e05df3b1SJaegeuk Kim 1266cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1267cfe58f9dSJaegeuk Kim { 1268cfe58f9dSJaegeuk Kim pgoff_t index = 0, end = LONG_MAX; 1269cfe58f9dSJaegeuk Kim struct pagevec pvec; 1270cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1271cfe58f9dSJaegeuk Kim 1272cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 12734ef51a8fSJaegeuk Kim 12744ef51a8fSJaegeuk Kim while (index <= end) { 12754ef51a8fSJaegeuk Kim int i, nr_pages; 12764ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1277cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 12784ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 12794ef51a8fSJaegeuk Kim if (nr_pages == 0) 12804ef51a8fSJaegeuk Kim break; 1281cfe58f9dSJaegeuk Kim 1282cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1283cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1284cfe58f9dSJaegeuk Kim 1285cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1286cfb271d4SChao Yu if (unlikely(page->index > end)) 1287cfe58f9dSJaegeuk Kim continue; 1288cfe58f9dSJaegeuk Kim 12894bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 12903cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1291cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1292cfe58f9dSJaegeuk Kim ret = -EIO; 1293cfe58f9dSJaegeuk Kim } 12944bf08ff6SChao Yu } 1295cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1296cfe58f9dSJaegeuk Kim cond_resched(); 1297cfe58f9dSJaegeuk Kim } 1298cfe58f9dSJaegeuk Kim 12994ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1300cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 13014ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1302cfe58f9dSJaegeuk Kim ret2 = -EIO; 1303cfe58f9dSJaegeuk Kim if (!ret) 1304cfe58f9dSJaegeuk Kim ret = ret2; 1305cfe58f9dSJaegeuk Kim return ret; 1306cfe58f9dSJaegeuk Kim } 1307cfe58f9dSJaegeuk Kim 1308e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1309e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1310e05df3b1SJaegeuk Kim { 13114081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1312e05df3b1SJaegeuk Kim nid_t nid; 1313e05df3b1SJaegeuk Kim struct node_info ni; 1314fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 131505ca3632SJaegeuk Kim .sbi = sbi, 1316fb5566daSJaegeuk Kim .type = NODE, 1317fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 131805ca3632SJaegeuk Kim .page = page, 13194375a336SJaegeuk Kim .encrypted_page = NULL, 1320fb5566daSJaegeuk Kim }; 1321e05df3b1SJaegeuk Kim 1322ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1323ecda0de3SChao Yu 1324caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 132587a9bd26SJaegeuk Kim goto redirty_out; 1326cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1327cf779cabSJaegeuk Kim goto redirty_out; 132887a9bd26SJaegeuk Kim 13293cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1330e05df3b1SJaegeuk Kim 1331e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1332e05df3b1SJaegeuk Kim nid = nid_of_node(page); 13339850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1334e05df3b1SJaegeuk Kim 133525b93346SJaegeuk Kim if (wbc->for_reclaim) { 133625b93346SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 133725b93346SJaegeuk Kim goto redirty_out; 133825b93346SJaegeuk Kim } else { 133925b93346SJaegeuk Kim down_read(&sbi->node_write); 134025b93346SJaegeuk Kim } 134125b93346SJaegeuk Kim 1342e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1343e05df3b1SJaegeuk Kim 1344e05df3b1SJaegeuk Kim /* This page is already truncated */ 13456bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 13462bca1e23SJaegeuk Kim ClearPageUptodate(page); 134739936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 134825b93346SJaegeuk Kim up_read(&sbi->node_write); 134939936837SJaegeuk Kim unlock_page(page); 135039936837SJaegeuk Kim return 0; 135139936837SJaegeuk Kim } 1352e05df3b1SJaegeuk Kim 1353e05df3b1SJaegeuk Kim set_page_writeback(page); 1354cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 135505ca3632SJaegeuk Kim write_node_page(nid, &fio); 1356cf04e8ebSJaegeuk Kim set_node_addr(sbi, &ni, fio.blk_addr, is_fsync_dnode(page)); 1357e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1358b3582c68SChao Yu up_read(&sbi->node_write); 1359e05df3b1SJaegeuk Kim unlock_page(page); 136027c6bd60SJaegeuk Kim 13618d4ea29bSJaegeuk Kim if (wbc->for_reclaim || unlikely(f2fs_cp_error(sbi))) 136227c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 136327c6bd60SJaegeuk Kim 1364e05df3b1SJaegeuk Kim return 0; 136587a9bd26SJaegeuk Kim 136687a9bd26SJaegeuk Kim redirty_out: 136776f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 136887a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1369e05df3b1SJaegeuk Kim } 1370e05df3b1SJaegeuk Kim 1371e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1372e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1373e05df3b1SJaegeuk Kim { 13744081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 137550c8cdb3SJaegeuk Kim long diff; 1376e05df3b1SJaegeuk Kim 1377e5748434SChao Yu trace_f2fs_writepages(mapping->host, wbc, NODE); 1378e5748434SChao Yu 13794660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 13804660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1381e05df3b1SJaegeuk Kim 1382a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 138387d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1384d3baf95dSJaegeuk Kim goto skip_write; 1385a7fdffbdSJaegeuk Kim 138650c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1387fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 1388e05df3b1SJaegeuk Kim sync_node_pages(sbi, 0, wbc); 138950c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1390e05df3b1SJaegeuk Kim return 0; 1391d3baf95dSJaegeuk Kim 1392d3baf95dSJaegeuk Kim skip_write: 1393d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1394d3baf95dSJaegeuk Kim return 0; 1395e05df3b1SJaegeuk Kim } 1396e05df3b1SJaegeuk Kim 1397e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1398e05df3b1SJaegeuk Kim { 139926c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 140026c6b887SJaegeuk Kim 1401e05df3b1SJaegeuk Kim SetPageUptodate(page); 1402e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1403e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 14044081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1405e05df3b1SJaegeuk Kim SetPagePrivate(page); 14069e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1407e05df3b1SJaegeuk Kim return 1; 1408e05df3b1SJaegeuk Kim } 1409e05df3b1SJaegeuk Kim return 0; 1410e05df3b1SJaegeuk Kim } 1411e05df3b1SJaegeuk Kim 14120a8165d7SJaegeuk Kim /* 1413e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1414e05df3b1SJaegeuk Kim */ 1415e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1416e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1417e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1418e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1419487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1420487261f3SChao Yu .releasepage = f2fs_release_page, 1421e05df3b1SJaegeuk Kim }; 1422e05df3b1SJaegeuk Kim 14238a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 14248a7ed66aSJaegeuk Kim nid_t n) 1425e05df3b1SJaegeuk Kim { 14268a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 14273aa770a9SNamjae Jeon } 1428e05df3b1SJaegeuk Kim 14298a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 14308a7ed66aSJaegeuk Kim struct free_nid *i) 1431e05df3b1SJaegeuk Kim { 1432e05df3b1SJaegeuk Kim list_del(&i->list); 14338a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1434e05df3b1SJaegeuk Kim } 1435e05df3b1SJaegeuk Kim 14366fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1437e05df3b1SJaegeuk Kim { 14386fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1439e05df3b1SJaegeuk Kim struct free_nid *i; 144059bbd474SJaegeuk Kim struct nat_entry *ne; 144159bbd474SJaegeuk Kim bool allocated = false; 1442e05df3b1SJaegeuk Kim 14436fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 144423d38844SHaicheng Li return -1; 14459198acebSJaegeuk Kim 14469198acebSJaegeuk Kim /* 0 nid should not be used */ 1447cfb271d4SChao Yu if (unlikely(nid == 0)) 14489198acebSJaegeuk Kim return 0; 144959bbd474SJaegeuk Kim 14507bd59381SGu Zheng if (build) { 145159bbd474SJaegeuk Kim /* do not add allocated nids */ 145259bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1453a5131193SJaegeuk Kim if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 14547ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 145559bbd474SJaegeuk Kim allocated = true; 145659bbd474SJaegeuk Kim if (allocated) 145759bbd474SJaegeuk Kim return 0; 1458e05df3b1SJaegeuk Kim } 14597bd59381SGu Zheng 14607bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1461e05df3b1SJaegeuk Kim i->nid = nid; 1462e05df3b1SJaegeuk Kim i->state = NID_NEW; 1463e05df3b1SJaegeuk Kim 1464769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1465769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1466769ec6e5SJaegeuk Kim return 0; 1467769ec6e5SJaegeuk Kim } 1468769ec6e5SJaegeuk Kim 1469e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14708a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1471e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1472769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1473e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1474e05df3b1SJaegeuk Kim return 0; 1475e05df3b1SJaegeuk Kim } 1476e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1477e05df3b1SJaegeuk Kim nm_i->fcnt++; 1478e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1479769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1480e05df3b1SJaegeuk Kim return 1; 1481e05df3b1SJaegeuk Kim } 1482e05df3b1SJaegeuk Kim 1483e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1484e05df3b1SJaegeuk Kim { 1485e05df3b1SJaegeuk Kim struct free_nid *i; 1486cf0ee0f0SChao Yu bool need_free = false; 1487cf0ee0f0SChao Yu 1488e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14898a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1490e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 14918a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1492e05df3b1SJaegeuk Kim nm_i->fcnt--; 1493cf0ee0f0SChao Yu need_free = true; 1494e05df3b1SJaegeuk Kim } 1495e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1496cf0ee0f0SChao Yu 1497cf0ee0f0SChao Yu if (need_free) 1498cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1499e05df3b1SJaegeuk Kim } 1500e05df3b1SJaegeuk Kim 15016fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1502e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1503e05df3b1SJaegeuk Kim { 15046fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1505e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1506e05df3b1SJaegeuk Kim block_t blk_addr; 1507e05df3b1SJaegeuk Kim int i; 1508e05df3b1SJaegeuk Kim 1509e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1510e05df3b1SJaegeuk Kim 1511e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 151223d38844SHaicheng Li 1513cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 151404431c44SJaegeuk Kim break; 151523d38844SHaicheng Li 1516e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 15179850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 151823d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 15196fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 152023d38844SHaicheng Li break; 152123d38844SHaicheng Li } 1522e05df3b1SJaegeuk Kim } 1523e05df3b1SJaegeuk Kim } 1524e05df3b1SJaegeuk Kim 1525e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1526e05df3b1SJaegeuk Kim { 1527e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1528e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1529e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 15308760952dSHaicheng Li int i = 0; 153155008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1532e05df3b1SJaegeuk Kim 153355008d84SJaegeuk Kim /* Enough entries */ 153455008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 153555008d84SJaegeuk Kim return; 1536e05df3b1SJaegeuk Kim 153755008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 153826879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 153926879fb1SChao Yu META_NAT, true); 1540e05df3b1SJaegeuk Kim 1541a5131193SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 1542a5131193SJaegeuk Kim 1543e05df3b1SJaegeuk Kim while (1) { 1544e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1545e05df3b1SJaegeuk Kim 15466fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1547e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1548e05df3b1SJaegeuk Kim 1549e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1550cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1551e05df3b1SJaegeuk Kim nid = 0; 155255008d84SJaegeuk Kim 1553a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1554e05df3b1SJaegeuk Kim break; 1555e05df3b1SJaegeuk Kim } 1556e05df3b1SJaegeuk Kim 155755008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 155855008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1559e05df3b1SJaegeuk Kim 1560e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1561e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1562e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1563e05df3b1SJaegeuk Kim block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr); 1564e05df3b1SJaegeuk Kim nid = le32_to_cpu(nid_in_journal(sum, i)); 1565e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 15666fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1567e05df3b1SJaegeuk Kim else 1568e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1569e05df3b1SJaegeuk Kim } 1570e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1571a5131193SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 15722db2388fSChao Yu 15732db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 1574ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 1575e05df3b1SJaegeuk Kim } 1576e05df3b1SJaegeuk Kim 1577e05df3b1SJaegeuk Kim /* 1578e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1579e05df3b1SJaegeuk Kim * from second parameter of this function. 1580e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1581e05df3b1SJaegeuk Kim */ 1582e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1583e05df3b1SJaegeuk Kim { 1584e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1585e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1586e05df3b1SJaegeuk Kim retry: 15877ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1588e05df3b1SJaegeuk Kim return false; 1589e05df3b1SJaegeuk Kim 1590e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1591e05df3b1SJaegeuk Kim 159255008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1593f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 15949850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 15952d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1596e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1597e05df3b1SJaegeuk Kim break; 1598e05df3b1SJaegeuk Kim 15999850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1600e05df3b1SJaegeuk Kim *nid = i->nid; 1601e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1602e05df3b1SJaegeuk Kim nm_i->fcnt--; 1603e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1604e05df3b1SJaegeuk Kim return true; 1605e05df3b1SJaegeuk Kim } 160655008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 160755008d84SJaegeuk Kim 160855008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 160955008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 161055008d84SJaegeuk Kim build_free_nids(sbi); 161155008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 161255008d84SJaegeuk Kim goto retry; 161355008d84SJaegeuk Kim } 1614e05df3b1SJaegeuk Kim 16150a8165d7SJaegeuk Kim /* 1616e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1617e05df3b1SJaegeuk Kim */ 1618e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1619e05df3b1SJaegeuk Kim { 1620e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1621e05df3b1SJaegeuk Kim struct free_nid *i; 1622e05df3b1SJaegeuk Kim 1623e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16248a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16259850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16268a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1627e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1628cf0ee0f0SChao Yu 1629cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1630e05df3b1SJaegeuk Kim } 1631e05df3b1SJaegeuk Kim 16320a8165d7SJaegeuk Kim /* 1633e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1634e05df3b1SJaegeuk Kim */ 1635e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1636e05df3b1SJaegeuk Kim { 163749952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 163849952fa1SJaegeuk Kim struct free_nid *i; 1639cf0ee0f0SChao Yu bool need_free = false; 164049952fa1SJaegeuk Kim 164165985d93SJaegeuk Kim if (!nid) 164265985d93SJaegeuk Kim return; 164365985d93SJaegeuk Kim 164449952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16458a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16469850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16476fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 16488a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1649cf0ee0f0SChao Yu need_free = true; 165095630cbaSHaicheng Li } else { 165149952fa1SJaegeuk Kim i->state = NID_NEW; 165249952fa1SJaegeuk Kim nm_i->fcnt++; 165395630cbaSHaicheng Li } 165449952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1655cf0ee0f0SChao Yu 1656cf0ee0f0SChao Yu if (need_free) 1657cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1658e05df3b1SJaegeuk Kim } 1659e05df3b1SJaegeuk Kim 166031696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 166131696580SChao Yu { 166231696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 166331696580SChao Yu struct free_nid *i, *next; 166431696580SChao Yu int nr = nr_shrink; 166531696580SChao Yu 166631696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 166731696580SChao Yu return 0; 166831696580SChao Yu 166931696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 167031696580SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 167131696580SChao Yu if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK) 167231696580SChao Yu break; 167331696580SChao Yu if (i->state == NID_ALLOC) 167431696580SChao Yu continue; 167531696580SChao Yu __del_from_free_nid_list(nm_i, i); 167631696580SChao Yu kmem_cache_free(free_nid_slab, i); 1677f7409d0fSJaegeuk Kim nm_i->fcnt--; 167831696580SChao Yu nr_shrink--; 167931696580SChao Yu } 168031696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 168131696580SChao Yu mutex_unlock(&nm_i->build_lock); 168231696580SChao Yu 168331696580SChao Yu return nr - nr_shrink; 168431696580SChao Yu } 168531696580SChao Yu 168670cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 168728cdce04SChao Yu { 168828cdce04SChao Yu void *src_addr, *dst_addr; 168928cdce04SChao Yu size_t inline_size; 169028cdce04SChao Yu struct page *ipage; 169128cdce04SChao Yu struct f2fs_inode *ri; 169228cdce04SChao Yu 16934081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 16949850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 169528cdce04SChao Yu 1696e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1697e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 1698e3b4d43fSJaegeuk Kim clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); 1699e3b4d43fSJaegeuk Kim goto update_inode; 1700e3b4d43fSJaegeuk Kim } 1701e3b4d43fSJaegeuk Kim 170228cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 170328cdce04SChao Yu src_addr = inline_xattr_addr(page); 170428cdce04SChao Yu inline_size = inline_xattr_size(inode); 170528cdce04SChao Yu 170654b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE); 170728cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1708e3b4d43fSJaegeuk Kim update_inode: 170928cdce04SChao Yu update_inode(inode, ipage); 171028cdce04SChao Yu f2fs_put_page(ipage, 1); 171128cdce04SChao Yu } 171228cdce04SChao Yu 17131c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1714abb2366cSJaegeuk Kim { 17154081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1716abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1717abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1718abb2366cSJaegeuk Kim struct node_info ni; 1719abb2366cSJaegeuk Kim 1720abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1721abb2366cSJaegeuk Kim if (!prev_xnid) 1722abb2366cSJaegeuk Kim goto recover_xnid; 1723abb2366cSJaegeuk Kim 1724abb2366cSJaegeuk Kim /* Deallocate node address */ 1725abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 17269850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1727abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1728abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1729479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1730abb2366cSJaegeuk Kim 1731abb2366cSJaegeuk Kim recover_xnid: 1732abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1733abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 17349850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1735abb2366cSJaegeuk Kim 1736abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1737abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1738abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1739479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1740abb2366cSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = new_xnid; 1741abb2366cSJaegeuk Kim 1742abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1743abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1744479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1745abb2366cSJaegeuk Kim 1746abb2366cSJaegeuk Kim update_inode_page(inode); 1747abb2366cSJaegeuk Kim } 1748abb2366cSJaegeuk Kim 1749e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 1750e05df3b1SJaegeuk Kim { 175158bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 1752e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 1753e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1754e05df3b1SJaegeuk Kim struct page *ipage; 1755e05df3b1SJaegeuk Kim 1756e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 1757e8271fa3SJaegeuk Kim 1758e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 1759e8271fa3SJaegeuk Kim return -EINVAL; 1760e8271fa3SJaegeuk Kim 17614ef51a8fSJaegeuk Kim ipage = grab_cache_page(NODE_MAPPING(sbi), ino); 1762e05df3b1SJaegeuk Kim if (!ipage) 1763e05df3b1SJaegeuk Kim return -ENOMEM; 1764e05df3b1SJaegeuk Kim 1765e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 1766e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 1767e05df3b1SJaegeuk Kim 1768e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 1769e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 1770e05df3b1SJaegeuk Kim 177158bfaf44SJaegeuk Kim src = F2FS_INODE(page); 177258bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 1773e05df3b1SJaegeuk Kim 177458bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 177558bfaf44SJaegeuk Kim dst->i_size = 0; 177658bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 177758bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 177858bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 1779617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 1780e05df3b1SJaegeuk Kim 1781e05df3b1SJaegeuk Kim new_ni = old_ni; 1782e05df3b1SJaegeuk Kim new_ni.ino = ino; 1783e05df3b1SJaegeuk Kim 1784cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 178565e5cd0aSJaegeuk Kim WARN_ON(1); 1786479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 1787e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1788617deb8cSJaegeuk Kim set_page_dirty(ipage); 1789e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 1790e05df3b1SJaegeuk Kim return 0; 1791e05df3b1SJaegeuk Kim } 1792e05df3b1SJaegeuk Kim 1793e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 1794e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 1795e05df3b1SJaegeuk Kim { 1796e05df3b1SJaegeuk Kim struct f2fs_node *rn; 1797e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 1798e05df3b1SJaegeuk Kim block_t addr; 179990a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 18009ecf4b80SChao Yu int i, idx, last_offset, nrpages; 1801e05df3b1SJaegeuk Kim 1802e05df3b1SJaegeuk Kim /* scan the node segment */ 1803e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 1804e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 1805e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 1806e05df3b1SJaegeuk Kim 18079ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 18089af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 1809393ff91fSJaegeuk Kim 18109af0ff1cSChao Yu /* readahead node pages */ 181126879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 18129af0ff1cSChao Yu 18139ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 18142b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 1815393ff91fSJaegeuk Kim 18169ecf4b80SChao Yu rn = F2FS_NODE(page); 1817393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 1818393ff91fSJaegeuk Kim sum_entry->version = 0; 1819393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 18209af0ff1cSChao Yu sum_entry++; 18219ecf4b80SChao Yu f2fs_put_page(page, 1); 18229af0ff1cSChao Yu } 1823bac4eef6SChao Yu 18249ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 1825bac4eef6SChao Yu addr + nrpages); 18269af0ff1cSChao Yu } 18279ecf4b80SChao Yu return 0; 1828e05df3b1SJaegeuk Kim } 1829e05df3b1SJaegeuk Kim 1830aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 1831e05df3b1SJaegeuk Kim { 1832e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1833e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1834e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1835e05df3b1SJaegeuk Kim int i; 1836e05df3b1SJaegeuk Kim 1837e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1838e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1839e05df3b1SJaegeuk Kim struct nat_entry *ne; 1840e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 1841e05df3b1SJaegeuk Kim nid_t nid = le32_to_cpu(nid_in_journal(sum, i)); 1842e05df3b1SJaegeuk Kim 1843e05df3b1SJaegeuk Kim raw_ne = nat_in_journal(sum, i); 18449be32d72SJaegeuk Kim 1845e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1846e05df3b1SJaegeuk Kim if (!ne) { 18479be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 184894dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 18499be32d72SJaegeuk Kim } 1850e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 1851e05df3b1SJaegeuk Kim } 1852e05df3b1SJaegeuk Kim update_nats_in_cursum(sum, -i); 1853e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1854e05df3b1SJaegeuk Kim } 1855e05df3b1SJaegeuk Kim 1856309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 1857309cc2b6SJaegeuk Kim struct list_head *head, int max) 1858e05df3b1SJaegeuk Kim { 1859309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 1860e05df3b1SJaegeuk Kim 1861309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 1862309cc2b6SJaegeuk Kim goto add_out; 1863e05df3b1SJaegeuk Kim 1864309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 1865309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 1866309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 1867309cc2b6SJaegeuk Kim return; 1868309cc2b6SJaegeuk Kim } 1869309cc2b6SJaegeuk Kim } 1870309cc2b6SJaegeuk Kim add_out: 1871309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 1872aec71382SChao Yu } 1873aec71382SChao Yu 1874309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 1875309cc2b6SJaegeuk Kim struct nat_entry_set *set) 1876309cc2b6SJaegeuk Kim { 1877309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1878309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1879309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 1880309cc2b6SJaegeuk Kim bool to_journal = true; 1881309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 1882309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 1883309cc2b6SJaegeuk Kim struct page *page = NULL; 1884aec71382SChao Yu 1885aec71382SChao Yu /* 1886aec71382SChao Yu * there are two steps to flush nat entries: 1887aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 1888aec71382SChao Yu * #2, flush nat entries to nat page. 1889aec71382SChao Yu */ 1890309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) 1891aec71382SChao Yu to_journal = false; 1892aec71382SChao Yu 1893aec71382SChao Yu if (to_journal) { 1894aec71382SChao Yu mutex_lock(&curseg->curseg_mutex); 1895aec71382SChao Yu } else { 1896e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 1897e05df3b1SJaegeuk Kim nat_blk = page_address(page); 18989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 1899e05df3b1SJaegeuk Kim } 1900e05df3b1SJaegeuk Kim 1901aec71382SChao Yu /* flush dirty nats in nat entry set */ 1902309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 1903aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 1904aec71382SChao Yu nid_t nid = nat_get_nid(ne); 1905aec71382SChao Yu int offset; 1906aec71382SChao Yu 1907309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 1908309cc2b6SJaegeuk Kim continue; 1909309cc2b6SJaegeuk Kim 1910aec71382SChao Yu if (to_journal) { 1911aec71382SChao Yu offset = lookup_journal_in_cursum(sum, 1912aec71382SChao Yu NAT_JOURNAL, nid, 1); 19139850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 1914aec71382SChao Yu raw_ne = &nat_in_journal(sum, offset); 1915aec71382SChao Yu nid_in_journal(sum, offset) = cpu_to_le32(nid); 1916aec71382SChao Yu } else { 1917aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 1918aec71382SChao Yu } 1919aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 192088bd02c9SJaegeuk Kim nat_reset_flag(ne); 1921309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 1922309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 1923309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 1924e05df3b1SJaegeuk Kim } 1925aec71382SChao Yu 1926aec71382SChao Yu if (to_journal) 1927e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1928aec71382SChao Yu else 1929e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1930aec71382SChao Yu 193180ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 193280ec2e91SChangman Lee 1933309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 1934309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 1935309cc2b6SJaegeuk Kim } 1936aec71382SChao Yu 1937309cc2b6SJaegeuk Kim /* 1938309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 1939309cc2b6SJaegeuk Kim */ 1940309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 1941309cc2b6SJaegeuk Kim { 1942309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1943309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1944309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 19457aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 1946309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 1947309cc2b6SJaegeuk Kim unsigned int found; 1948309cc2b6SJaegeuk Kim nid_t set_idx = 0; 1949309cc2b6SJaegeuk Kim LIST_HEAD(sets); 1950309cc2b6SJaegeuk Kim 195120d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 195220d047c8SChangman Lee return; 1953a5131193SJaegeuk Kim 1954a5131193SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 1955a5131193SJaegeuk Kim 1956309cc2b6SJaegeuk Kim /* 1957309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 1958309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 1959309cc2b6SJaegeuk Kim * into nat entry set. 1960309cc2b6SJaegeuk Kim */ 1961309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 1962309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 1963309cc2b6SJaegeuk Kim 1964309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 19657aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 1966309cc2b6SJaegeuk Kim unsigned idx; 1967309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 1968309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 1969309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 1970309cc2b6SJaegeuk Kim MAX_NAT_JENTRIES(sum)); 1971309cc2b6SJaegeuk Kim } 1972309cc2b6SJaegeuk Kim 1973309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 1974309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 1975309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 1976309cc2b6SJaegeuk Kim 1977a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 1978a5131193SJaegeuk Kim 19799850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 1980e05df3b1SJaegeuk Kim } 1981e05df3b1SJaegeuk Kim 1982e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 1983e05df3b1SJaegeuk Kim { 1984e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 1985e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1986e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 1987e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 1988e05df3b1SJaegeuk Kim 1989e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 1990e05df3b1SJaegeuk Kim 1991e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 1992e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 1993e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 1994b63da15eSJaegeuk Kim 19957ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 19967ee0eeabSJaegeuk Kim 1997b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 1998c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 1999e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 2000e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2001cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2002ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 20032304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2004e05df3b1SJaegeuk Kim 20058a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2006e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 2007769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2008769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2009e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2010e05df3b1SJaegeuk Kim 2011e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2012e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 20138b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2014e05df3b1SJaegeuk Kim 2015e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 201679b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2017e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2018e05df3b1SJaegeuk Kim if (!version_bitmap) 2019e05df3b1SJaegeuk Kim return -EFAULT; 2020e05df3b1SJaegeuk Kim 202179b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 202279b5793bSAlexandru Gheorghiu GFP_KERNEL); 202379b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 202479b5793bSAlexandru Gheorghiu return -ENOMEM; 2025e05df3b1SJaegeuk Kim return 0; 2026e05df3b1SJaegeuk Kim } 2027e05df3b1SJaegeuk Kim 2028e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2029e05df3b1SJaegeuk Kim { 2030e05df3b1SJaegeuk Kim int err; 2031e05df3b1SJaegeuk Kim 2032e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2033e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2034e05df3b1SJaegeuk Kim return -ENOMEM; 2035e05df3b1SJaegeuk Kim 2036e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2037e05df3b1SJaegeuk Kim if (err) 2038e05df3b1SJaegeuk Kim return err; 2039e05df3b1SJaegeuk Kim 2040e05df3b1SJaegeuk Kim build_free_nids(sbi); 2041e05df3b1SJaegeuk Kim return 0; 2042e05df3b1SJaegeuk Kim } 2043e05df3b1SJaegeuk Kim 2044e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2045e05df3b1SJaegeuk Kim { 2046e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2047e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2048e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 20497aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2050e05df3b1SJaegeuk Kim nid_t nid = 0; 2051e05df3b1SJaegeuk Kim unsigned int found; 2052e05df3b1SJaegeuk Kim 2053e05df3b1SJaegeuk Kim if (!nm_i) 2054e05df3b1SJaegeuk Kim return; 2055e05df3b1SJaegeuk Kim 2056e05df3b1SJaegeuk Kim /* destroy free nid list */ 2057e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2058e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 20599850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 20608a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2061e05df3b1SJaegeuk Kim nm_i->fcnt--; 2062cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2063cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2064cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2065e05df3b1SJaegeuk Kim } 20669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2067e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2068e05df3b1SJaegeuk Kim 2069e05df3b1SJaegeuk Kim /* destroy nat cache */ 20708b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2071e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2072e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2073e05df3b1SJaegeuk Kim unsigned idx; 20747aed0d45SJaegeuk Kim 2075b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2076b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2077b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2078e05df3b1SJaegeuk Kim } 20799850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 20807aed0d45SJaegeuk Kim 20817aed0d45SJaegeuk Kim /* destroy nat set cache */ 20827aed0d45SJaegeuk Kim nid = 0; 20837aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 20847aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 20857aed0d45SJaegeuk Kim unsigned idx; 20867aed0d45SJaegeuk Kim 20877aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 20887aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 20897aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 20907aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 20917aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 20927aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 20937aed0d45SJaegeuk Kim } 20947aed0d45SJaegeuk Kim } 20958b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2096e05df3b1SJaegeuk Kim 2097e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2098e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2099e05df3b1SJaegeuk Kim kfree(nm_i); 2100e05df3b1SJaegeuk Kim } 2101e05df3b1SJaegeuk Kim 21026e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2103e05df3b1SJaegeuk Kim { 2104e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2105e8512d2eSGu Zheng sizeof(struct nat_entry)); 2106e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2107aec71382SChao Yu goto fail; 2108e05df3b1SJaegeuk Kim 2109e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2110e8512d2eSGu Zheng sizeof(struct free_nid)); 2111aec71382SChao Yu if (!free_nid_slab) 2112ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2113aec71382SChao Yu 2114aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2115aec71382SChao Yu sizeof(struct nat_entry_set)); 2116aec71382SChao Yu if (!nat_entry_set_slab) 2117ce3e6d25SMarkus Elfring goto destroy_free_nid; 2118e05df3b1SJaegeuk Kim return 0; 2119aec71382SChao Yu 2120ce3e6d25SMarkus Elfring destroy_free_nid: 2121aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2122ce3e6d25SMarkus Elfring destroy_nat_entry: 2123aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2124aec71382SChao Yu fail: 2125aec71382SChao Yu return -ENOMEM; 2126e05df3b1SJaegeuk Kim } 2127e05df3b1SJaegeuk Kim 2128e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2129e05df3b1SJaegeuk Kim { 2130aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2131e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2132e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2133e05df3b1SJaegeuk Kim } 2134