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); 556fb03f3aSJaegeuk Kim } else if (type == DIRTY_DENTS) { 562743f865SJaegeuk Kim if (sbi->sb->s_bdi->dirty_exceeded) 572743f865SJaegeuk Kim return false; 586fb03f3aSJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 59e5e7ea3cSJaegeuk 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) { 68429511cdSChao Yu mem_size = (sbi->total_ext_tree * sizeof(struct extent_tree) + 69429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 70429511cdSChao Yu sizeof(struct extent_node)) >> PAGE_CACHE_SHIFT; 71429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 721e84371fSJaegeuk Kim } else { 731e84371fSJaegeuk Kim if (sbi->sb->s_bdi->dirty_exceeded) 741e84371fSJaegeuk Kim return false; 756fb03f3aSJaegeuk Kim } 766fb03f3aSJaegeuk Kim return res; 77cdfc41c1SJaegeuk Kim } 78cdfc41c1SJaegeuk Kim 79e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 80e05df3b1SJaegeuk Kim { 81e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 82e05df3b1SJaegeuk Kim unsigned int long flags; 83e05df3b1SJaegeuk Kim 84e05df3b1SJaegeuk Kim if (PageDirty(page)) { 85e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 86e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 87e05df3b1SJaegeuk Kim page_index(page), 88e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 89e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 90e05df3b1SJaegeuk Kim 91e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 924081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 93e05df3b1SJaegeuk Kim } 94e05df3b1SJaegeuk Kim ClearPageUptodate(page); 95e05df3b1SJaegeuk Kim } 96e05df3b1SJaegeuk Kim 97e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 98e05df3b1SJaegeuk Kim { 99e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 100e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 101e05df3b1SJaegeuk Kim } 102e05df3b1SJaegeuk Kim 103e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 104e05df3b1SJaegeuk Kim { 105e05df3b1SJaegeuk Kim struct page *src_page; 106e05df3b1SJaegeuk Kim struct page *dst_page; 107e05df3b1SJaegeuk Kim pgoff_t src_off; 108e05df3b1SJaegeuk Kim pgoff_t dst_off; 109e05df3b1SJaegeuk Kim void *src_addr; 110e05df3b1SJaegeuk Kim void *dst_addr; 111e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 112e05df3b1SJaegeuk Kim 113e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 114e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 115e05df3b1SJaegeuk Kim 116e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 117e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 118e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1199850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 120e05df3b1SJaegeuk Kim 121e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 122e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 123e05df3b1SJaegeuk Kim memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); 124e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 125e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 126e05df3b1SJaegeuk Kim 127e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 128e05df3b1SJaegeuk Kim 129e05df3b1SJaegeuk Kim return dst_page; 130e05df3b1SJaegeuk Kim } 131e05df3b1SJaegeuk Kim 132e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 133e05df3b1SJaegeuk Kim { 134e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 135e05df3b1SJaegeuk Kim } 136e05df3b1SJaegeuk Kim 137e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 138e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 139e05df3b1SJaegeuk Kim { 140e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 141e05df3b1SJaegeuk Kim } 142e05df3b1SJaegeuk Kim 143e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 144e05df3b1SJaegeuk Kim { 145e05df3b1SJaegeuk Kim list_del(&e->list); 146e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 147e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 148e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 149e05df3b1SJaegeuk Kim } 150e05df3b1SJaegeuk Kim 151309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 152309cc2b6SJaegeuk Kim struct nat_entry *ne) 153309cc2b6SJaegeuk Kim { 154309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 155309cc2b6SJaegeuk Kim struct nat_entry_set *head; 156309cc2b6SJaegeuk Kim 157309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 158309cc2b6SJaegeuk Kim return; 1599be32d72SJaegeuk Kim 160309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 161309cc2b6SJaegeuk Kim if (!head) { 162309cc2b6SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_ATOMIC); 163309cc2b6SJaegeuk Kim 164309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 165309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 166309cc2b6SJaegeuk Kim head->set = set; 167309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1689be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 169309cc2b6SJaegeuk Kim } 170309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 171309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 172309cc2b6SJaegeuk Kim head->entry_cnt++; 173309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 174309cc2b6SJaegeuk Kim } 175309cc2b6SJaegeuk Kim 176309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 177309cc2b6SJaegeuk Kim struct nat_entry *ne) 178309cc2b6SJaegeuk Kim { 17920d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 180309cc2b6SJaegeuk Kim struct nat_entry_set *head; 181309cc2b6SJaegeuk Kim 182309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 183309cc2b6SJaegeuk Kim if (head) { 184309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 185309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 186309cc2b6SJaegeuk Kim head->entry_cnt--; 187309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 188309cc2b6SJaegeuk Kim } 189309cc2b6SJaegeuk Kim } 190309cc2b6SJaegeuk Kim 191309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 192309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 193309cc2b6SJaegeuk Kim { 194309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 195309cc2b6SJaegeuk Kim start, nr); 196309cc2b6SJaegeuk Kim } 197309cc2b6SJaegeuk Kim 19888bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 199e05df3b1SJaegeuk Kim { 200e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 201e05df3b1SJaegeuk Kim struct nat_entry *e; 20288bd02c9SJaegeuk Kim bool is_cp = true; 203e05df3b1SJaegeuk Kim 2048b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 205e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2067ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 20788bd02c9SJaegeuk Kim is_cp = false; 2088b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 209e05df3b1SJaegeuk Kim return is_cp; 210e05df3b1SJaegeuk Kim } 211e05df3b1SJaegeuk Kim 21288bd02c9SJaegeuk Kim bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino) 213479f40c4SJaegeuk Kim { 214479f40c4SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 215479f40c4SJaegeuk Kim struct nat_entry *e; 21688bd02c9SJaegeuk Kim bool fsynced = false; 217479f40c4SJaegeuk Kim 2188b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 21988bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 22088bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_FSYNCED_INODE)) 22188bd02c9SJaegeuk Kim fsynced = true; 2228b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 22388bd02c9SJaegeuk Kim return fsynced; 224479f40c4SJaegeuk Kim } 225479f40c4SJaegeuk Kim 22688bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 227b6fe5873SJaegeuk Kim { 228b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 229b6fe5873SJaegeuk Kim struct nat_entry *e; 23088bd02c9SJaegeuk Kim bool need_update = true; 231b6fe5873SJaegeuk Kim 2328b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23388bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 23488bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23588bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 23688bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 23788bd02c9SJaegeuk Kim need_update = false; 2388b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23988bd02c9SJaegeuk Kim return need_update; 240b6fe5873SJaegeuk Kim } 241b6fe5873SJaegeuk Kim 242e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 243e05df3b1SJaegeuk Kim { 244e05df3b1SJaegeuk Kim struct nat_entry *new; 245e05df3b1SJaegeuk Kim 2469be32d72SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_ATOMIC); 2479be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 248e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 249e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25088bd02c9SJaegeuk Kim nat_reset_flag(new); 251e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 252e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 253e05df3b1SJaegeuk Kim return new; 254e05df3b1SJaegeuk Kim } 255e05df3b1SJaegeuk Kim 256e05df3b1SJaegeuk Kim static void cache_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 257e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 258e05df3b1SJaegeuk Kim { 259e05df3b1SJaegeuk Kim struct nat_entry *e; 2609be32d72SJaegeuk Kim 2618b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 262e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 263e05df3b1SJaegeuk Kim if (!e) { 264e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 26594dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 266e05df3b1SJaegeuk Kim } 2678b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 268e05df3b1SJaegeuk Kim } 269e05df3b1SJaegeuk Kim 270e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 271479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 272e05df3b1SJaegeuk Kim { 273e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 274e05df3b1SJaegeuk Kim struct nat_entry *e; 2759be32d72SJaegeuk Kim 2768b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 277e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 278e05df3b1SJaegeuk Kim if (!e) { 279e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2805c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 282e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 283e05df3b1SJaegeuk Kim /* 284e05df3b1SJaegeuk Kim * when nid is reallocated, 285e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 286e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 287e05df3b1SJaegeuk Kim */ 2885c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2899850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 290e05df3b1SJaegeuk Kim } 291e05df3b1SJaegeuk Kim 292e05df3b1SJaegeuk Kim /* sanity check */ 2939850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 2949850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 295e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 2969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 297e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 2989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 299e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 300e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 301e05df3b1SJaegeuk Kim 302e1c42045Sarter97 /* increment version no as node is removed */ 303e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 304e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 305e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 306e05df3b1SJaegeuk Kim } 307e05df3b1SJaegeuk Kim 308e05df3b1SJaegeuk Kim /* change address */ 309e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 31088bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 31188bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 312e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 313479f40c4SJaegeuk Kim 314479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 315479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 31688bd02c9SJaegeuk Kim if (e) { 31788bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 31888bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 31988bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 32088bd02c9SJaegeuk Kim } 3218b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 322e05df3b1SJaegeuk Kim } 323e05df3b1SJaegeuk Kim 3244660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 325e05df3b1SJaegeuk Kim { 326e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 327e05df3b1SJaegeuk Kim 3286fb03f3aSJaegeuk Kim if (available_free_memory(sbi, NAT_ENTRIES)) 329e05df3b1SJaegeuk Kim return 0; 330e05df3b1SJaegeuk Kim 3318b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 332e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 333e05df3b1SJaegeuk Kim struct nat_entry *ne; 334e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 335e05df3b1SJaegeuk Kim struct nat_entry, list); 336e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 337e05df3b1SJaegeuk Kim nr_shrink--; 338e05df3b1SJaegeuk Kim } 3398b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 340e05df3b1SJaegeuk Kim return nr_shrink; 341e05df3b1SJaegeuk Kim } 342e05df3b1SJaegeuk Kim 3430a8165d7SJaegeuk Kim /* 344e1c42045Sarter97 * This function always returns success 345e05df3b1SJaegeuk Kim */ 346e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 347e05df3b1SJaegeuk Kim { 348e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 349e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 350e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 351e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 352e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 353e05df3b1SJaegeuk Kim struct page *page = NULL; 354e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 355e05df3b1SJaegeuk Kim struct nat_entry *e; 356e05df3b1SJaegeuk Kim int i; 357e05df3b1SJaegeuk Kim 358e05df3b1SJaegeuk Kim ni->nid = nid; 359e05df3b1SJaegeuk Kim 360e05df3b1SJaegeuk Kim /* Check nat cache */ 3618b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 362e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 363e05df3b1SJaegeuk Kim if (e) { 364e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 365e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 366e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 367e05df3b1SJaegeuk Kim } 3688b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 369e05df3b1SJaegeuk Kim if (e) 370e05df3b1SJaegeuk Kim return; 371e05df3b1SJaegeuk Kim 3723547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3733547ea96SJaegeuk Kim 374e05df3b1SJaegeuk Kim /* Check current segment summary */ 375e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 376e05df3b1SJaegeuk Kim i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0); 377e05df3b1SJaegeuk Kim if (i >= 0) { 378e05df3b1SJaegeuk Kim ne = nat_in_journal(sum, i); 379e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 380e05df3b1SJaegeuk Kim } 381e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 382e05df3b1SJaegeuk Kim if (i >= 0) 383e05df3b1SJaegeuk Kim goto cache; 384e05df3b1SJaegeuk Kim 385e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 386e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 387e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 388e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 389e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 390e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 391e05df3b1SJaegeuk Kim cache: 392e05df3b1SJaegeuk Kim /* cache nat entry */ 393e05df3b1SJaegeuk Kim cache_nat_entry(NM_I(sbi), nid, &ne); 394e05df3b1SJaegeuk Kim } 395e05df3b1SJaegeuk Kim 3960a8165d7SJaegeuk Kim /* 397e05df3b1SJaegeuk Kim * The maximum depth is four. 398e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 399e05df3b1SJaegeuk Kim */ 400de93653fSJaegeuk Kim static int get_node_path(struct f2fs_inode_info *fi, long block, 401de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 402e05df3b1SJaegeuk Kim { 403de93653fSJaegeuk Kim const long direct_index = ADDRS_PER_INODE(fi); 404e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 405e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 406e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 407e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 408e05df3b1SJaegeuk Kim int n = 0; 409e05df3b1SJaegeuk Kim int level = 0; 410e05df3b1SJaegeuk Kim 411e05df3b1SJaegeuk Kim noffset[0] = 0; 412e05df3b1SJaegeuk Kim 413e05df3b1SJaegeuk Kim if (block < direct_index) { 41425c0a6e5SNamjae Jeon offset[n] = block; 415e05df3b1SJaegeuk Kim goto got; 416e05df3b1SJaegeuk Kim } 417e05df3b1SJaegeuk Kim block -= direct_index; 418e05df3b1SJaegeuk Kim if (block < direct_blks) { 419e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 420e05df3b1SJaegeuk Kim noffset[n] = 1; 42125c0a6e5SNamjae Jeon offset[n] = block; 422e05df3b1SJaegeuk Kim level = 1; 423e05df3b1SJaegeuk Kim goto got; 424e05df3b1SJaegeuk Kim } 425e05df3b1SJaegeuk Kim block -= direct_blks; 426e05df3b1SJaegeuk Kim if (block < direct_blks) { 427e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 428e05df3b1SJaegeuk Kim noffset[n] = 2; 42925c0a6e5SNamjae Jeon offset[n] = block; 430e05df3b1SJaegeuk Kim level = 1; 431e05df3b1SJaegeuk Kim goto got; 432e05df3b1SJaegeuk Kim } 433e05df3b1SJaegeuk Kim block -= direct_blks; 434e05df3b1SJaegeuk Kim if (block < indirect_blks) { 435e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 436e05df3b1SJaegeuk Kim noffset[n] = 3; 437e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 438e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 43925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 440e05df3b1SJaegeuk Kim level = 2; 441e05df3b1SJaegeuk Kim goto got; 442e05df3b1SJaegeuk Kim } 443e05df3b1SJaegeuk Kim block -= indirect_blks; 444e05df3b1SJaegeuk Kim if (block < indirect_blks) { 445e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 446e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 447e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 448e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + 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 < dindirect_blks) { 455e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 456e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 457e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 458e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 459e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 460e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 461e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 462e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 463e05df3b1SJaegeuk Kim offset[n - 1]; 46425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 465e05df3b1SJaegeuk Kim level = 3; 466e05df3b1SJaegeuk Kim goto got; 467e05df3b1SJaegeuk Kim } else { 468e05df3b1SJaegeuk Kim BUG(); 469e05df3b1SJaegeuk Kim } 470e05df3b1SJaegeuk Kim got: 471e05df3b1SJaegeuk Kim return level; 472e05df3b1SJaegeuk Kim } 473e05df3b1SJaegeuk Kim 474e05df3b1SJaegeuk Kim /* 475e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 4764f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 4774f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 47839936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 479e05df3b1SJaegeuk Kim */ 480266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 481e05df3b1SJaegeuk Kim { 4824081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 483e05df3b1SJaegeuk Kim struct page *npage[4]; 484f1a3b98eSJaegeuk Kim struct page *parent = NULL; 485e05df3b1SJaegeuk Kim int offset[4]; 486e05df3b1SJaegeuk Kim unsigned int noffset[4]; 487e05df3b1SJaegeuk Kim nid_t nids[4]; 488e05df3b1SJaegeuk Kim int level, i; 489e05df3b1SJaegeuk Kim int err = 0; 490e05df3b1SJaegeuk Kim 491de93653fSJaegeuk Kim level = get_node_path(F2FS_I(dn->inode), index, offset, noffset); 492e05df3b1SJaegeuk Kim 493e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 4941646cfacSJaegeuk Kim npage[0] = dn->inode_page; 4951646cfacSJaegeuk Kim 4961646cfacSJaegeuk Kim if (!npage[0]) { 497e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 498e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 499e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5001646cfacSJaegeuk Kim } 501f1a3b98eSJaegeuk Kim 502f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 503f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 50476629165SJaegeuk Kim err = -ENOENT; 505f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 506f1a3b98eSJaegeuk Kim goto release_out; 507f1a3b98eSJaegeuk Kim } 508f1a3b98eSJaegeuk Kim 509e05df3b1SJaegeuk Kim parent = npage[0]; 51052c2db3fSChangman Lee if (level != 0) 511e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 512e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 513e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 514e05df3b1SJaegeuk Kim 515e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 516e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 517e05df3b1SJaegeuk Kim bool done = false; 518e05df3b1SJaegeuk Kim 519266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 520e05df3b1SJaegeuk Kim /* alloc new node */ 521e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 522e05df3b1SJaegeuk Kim err = -ENOSPC; 523e05df3b1SJaegeuk Kim goto release_pages; 524e05df3b1SJaegeuk Kim } 525e05df3b1SJaegeuk Kim 526e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5278ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 528e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 529e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 530e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 531e05df3b1SJaegeuk Kim goto release_pages; 532e05df3b1SJaegeuk Kim } 533e05df3b1SJaegeuk Kim 534e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 535e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 536e05df3b1SJaegeuk Kim done = true; 537266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 538e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 539e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 540e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 541e05df3b1SJaegeuk Kim goto release_pages; 542e05df3b1SJaegeuk Kim } 543e05df3b1SJaegeuk Kim done = true; 544e05df3b1SJaegeuk Kim } 545e05df3b1SJaegeuk Kim if (i == 1) { 546e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 547e05df3b1SJaegeuk Kim unlock_page(parent); 548e05df3b1SJaegeuk Kim } else { 549e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 550e05df3b1SJaegeuk Kim } 551e05df3b1SJaegeuk Kim 552e05df3b1SJaegeuk Kim if (!done) { 553e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 554e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 555e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 556e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 557e05df3b1SJaegeuk Kim goto release_out; 558e05df3b1SJaegeuk Kim } 559e05df3b1SJaegeuk Kim } 560e05df3b1SJaegeuk Kim if (i < level) { 561e05df3b1SJaegeuk Kim parent = npage[i]; 562e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 563e05df3b1SJaegeuk Kim } 564e05df3b1SJaegeuk Kim } 565e05df3b1SJaegeuk Kim dn->nid = nids[level]; 566e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 567e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 568e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 569e05df3b1SJaegeuk Kim return 0; 570e05df3b1SJaegeuk Kim 571e05df3b1SJaegeuk Kim release_pages: 572e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 573e05df3b1SJaegeuk Kim if (i > 1) 574e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 575e05df3b1SJaegeuk Kim release_out: 576e05df3b1SJaegeuk Kim dn->inode_page = NULL; 577e05df3b1SJaegeuk Kim dn->node_page = NULL; 578e05df3b1SJaegeuk Kim return err; 579e05df3b1SJaegeuk Kim } 580e05df3b1SJaegeuk Kim 581e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 582e05df3b1SJaegeuk Kim { 5834081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 584e05df3b1SJaegeuk Kim struct node_info ni; 585e05df3b1SJaegeuk Kim 586e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 58771e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 5889850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 58971e9fec5SJaegeuk Kim goto invalidate; 59071e9fec5SJaegeuk Kim } 5919850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 592e05df3b1SJaegeuk Kim 593e05df3b1SJaegeuk Kim /* Deallocate node address */ 59471e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 595ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 596479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 597e05df3b1SJaegeuk Kim 598e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 599e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 600e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 601e05df3b1SJaegeuk Kim } else { 602e05df3b1SJaegeuk Kim sync_inode_page(dn); 603e05df3b1SJaegeuk Kim } 60471e9fec5SJaegeuk Kim invalidate: 605e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 606caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 607e05df3b1SJaegeuk Kim 608e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 609bf39c00aSJaegeuk Kim 610bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 611bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 612bf39c00aSJaegeuk Kim 613e05df3b1SJaegeuk Kim dn->node_page = NULL; 61451dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 615e05df3b1SJaegeuk Kim } 616e05df3b1SJaegeuk Kim 617e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 618e05df3b1SJaegeuk Kim { 619e05df3b1SJaegeuk Kim struct page *page; 620e05df3b1SJaegeuk Kim 621e05df3b1SJaegeuk Kim if (dn->nid == 0) 622e05df3b1SJaegeuk Kim return 1; 623e05df3b1SJaegeuk Kim 624e05df3b1SJaegeuk Kim /* get direct node */ 6254081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 626e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 627e05df3b1SJaegeuk Kim return 1; 628e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 629e05df3b1SJaegeuk Kim return PTR_ERR(page); 630e05df3b1SJaegeuk Kim 631e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 632e05df3b1SJaegeuk Kim dn->node_page = page; 633e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 634e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 635e05df3b1SJaegeuk Kim truncate_node(dn); 636e05df3b1SJaegeuk Kim return 1; 637e05df3b1SJaegeuk Kim } 638e05df3b1SJaegeuk Kim 639e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 640e05df3b1SJaegeuk Kim int ofs, int depth) 641e05df3b1SJaegeuk Kim { 642e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 643e05df3b1SJaegeuk Kim struct page *page; 644e05df3b1SJaegeuk Kim struct f2fs_node *rn; 645e05df3b1SJaegeuk Kim nid_t child_nid; 646e05df3b1SJaegeuk Kim unsigned int child_nofs; 647e05df3b1SJaegeuk Kim int freed = 0; 648e05df3b1SJaegeuk Kim int i, ret; 649e05df3b1SJaegeuk Kim 650e05df3b1SJaegeuk Kim if (dn->nid == 0) 651e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 652e05df3b1SJaegeuk Kim 65351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 65451dd6249SNamjae Jeon 6554081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 65651dd6249SNamjae Jeon if (IS_ERR(page)) { 65751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 658e05df3b1SJaegeuk Kim return PTR_ERR(page); 65951dd6249SNamjae Jeon } 660e05df3b1SJaegeuk Kim 66145590710SGu Zheng rn = F2FS_NODE(page); 662e05df3b1SJaegeuk Kim if (depth < 3) { 663e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 664e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 665e05df3b1SJaegeuk Kim if (child_nid == 0) 666e05df3b1SJaegeuk Kim continue; 667e05df3b1SJaegeuk Kim rdn.nid = child_nid; 668e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 669e05df3b1SJaegeuk Kim if (ret < 0) 670e05df3b1SJaegeuk Kim goto out_err; 671e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 672e05df3b1SJaegeuk Kim } 673e05df3b1SJaegeuk Kim } else { 674e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 675e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 676e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 677e05df3b1SJaegeuk Kim if (child_nid == 0) { 678e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 679e05df3b1SJaegeuk Kim continue; 680e05df3b1SJaegeuk Kim } 681e05df3b1SJaegeuk Kim rdn.nid = child_nid; 682e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 683e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 684e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 685e05df3b1SJaegeuk Kim child_nofs += ret; 686e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 687e05df3b1SJaegeuk Kim goto out_err; 688e05df3b1SJaegeuk Kim } 689e05df3b1SJaegeuk Kim } 690e05df3b1SJaegeuk Kim freed = child_nofs; 691e05df3b1SJaegeuk Kim } 692e05df3b1SJaegeuk Kim 693e05df3b1SJaegeuk Kim if (!ofs) { 694e05df3b1SJaegeuk Kim /* remove current indirect node */ 695e05df3b1SJaegeuk Kim dn->node_page = page; 696e05df3b1SJaegeuk Kim truncate_node(dn); 697e05df3b1SJaegeuk Kim freed++; 698e05df3b1SJaegeuk Kim } else { 699e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 700e05df3b1SJaegeuk Kim } 70151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 702e05df3b1SJaegeuk Kim return freed; 703e05df3b1SJaegeuk Kim 704e05df3b1SJaegeuk Kim out_err: 705e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 70651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 707e05df3b1SJaegeuk Kim return ret; 708e05df3b1SJaegeuk Kim } 709e05df3b1SJaegeuk Kim 710e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 711e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 712e05df3b1SJaegeuk Kim { 713e05df3b1SJaegeuk Kim struct page *pages[2]; 714e05df3b1SJaegeuk Kim nid_t nid[3]; 715e05df3b1SJaegeuk Kim nid_t child_nid; 716e05df3b1SJaegeuk Kim int err = 0; 717e05df3b1SJaegeuk Kim int i; 718e05df3b1SJaegeuk Kim int idx = depth - 2; 719e05df3b1SJaegeuk Kim 720e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 721e05df3b1SJaegeuk Kim if (!nid[0]) 722e05df3b1SJaegeuk Kim return 0; 723e05df3b1SJaegeuk Kim 724e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 725a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 726e1c42045Sarter97 /* reference count'll be increased */ 7274081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 728e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 729e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 730a225dca3Sshifei10.ge idx = i - 1; 731e05df3b1SJaegeuk Kim goto fail; 732e05df3b1SJaegeuk Kim } 733e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 734e05df3b1SJaegeuk Kim } 735e05df3b1SJaegeuk Kim 736e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 737a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 738e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 739e05df3b1SJaegeuk Kim if (!child_nid) 740e05df3b1SJaegeuk Kim continue; 741e05df3b1SJaegeuk Kim dn->nid = child_nid; 742e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 743e05df3b1SJaegeuk Kim if (err < 0) 744e05df3b1SJaegeuk Kim goto fail; 745e05df3b1SJaegeuk Kim set_nid(pages[idx], i, 0, false); 746e05df3b1SJaegeuk Kim } 747e05df3b1SJaegeuk Kim 748a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 749e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 750e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 751e05df3b1SJaegeuk Kim truncate_node(dn); 752e05df3b1SJaegeuk Kim } else { 753e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 754e05df3b1SJaegeuk Kim } 755e05df3b1SJaegeuk Kim offset[idx]++; 756a225dca3Sshifei10.ge offset[idx + 1] = 0; 757a225dca3Sshifei10.ge idx--; 758e05df3b1SJaegeuk Kim fail: 759a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 760e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 76151dd6249SNamjae Jeon 76251dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 76351dd6249SNamjae Jeon 764e05df3b1SJaegeuk Kim return err; 765e05df3b1SJaegeuk Kim } 766e05df3b1SJaegeuk Kim 7670a8165d7SJaegeuk Kim /* 768e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 769e05df3b1SJaegeuk Kim */ 770e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 771e05df3b1SJaegeuk Kim { 7724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 773e05df3b1SJaegeuk Kim int err = 0, cont = 1; 774e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 7757dd690c8SJaegeuk Kim unsigned int nofs = 0; 77658bfaf44SJaegeuk Kim struct f2fs_inode *ri; 777e05df3b1SJaegeuk Kim struct dnode_of_data dn; 778e05df3b1SJaegeuk Kim struct page *page; 779e05df3b1SJaegeuk Kim 78051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 78151dd6249SNamjae Jeon 782de93653fSJaegeuk Kim level = get_node_path(F2FS_I(inode), from, offset, noffset); 783afcb7ca0SJaegeuk Kim restart: 784e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 78551dd6249SNamjae Jeon if (IS_ERR(page)) { 78651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 787e05df3b1SJaegeuk Kim return PTR_ERR(page); 78851dd6249SNamjae Jeon } 789e05df3b1SJaegeuk Kim 790e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 791e05df3b1SJaegeuk Kim unlock_page(page); 792e05df3b1SJaegeuk Kim 79358bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 794e05df3b1SJaegeuk Kim switch (level) { 795e05df3b1SJaegeuk Kim case 0: 796e05df3b1SJaegeuk Kim case 1: 797e05df3b1SJaegeuk Kim nofs = noffset[1]; 798e05df3b1SJaegeuk Kim break; 799e05df3b1SJaegeuk Kim case 2: 800e05df3b1SJaegeuk Kim nofs = noffset[1]; 801e05df3b1SJaegeuk Kim if (!offset[level - 1]) 802e05df3b1SJaegeuk Kim goto skip_partial; 80358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 804e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 805e05df3b1SJaegeuk Kim goto fail; 806e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 807e05df3b1SJaegeuk Kim break; 808e05df3b1SJaegeuk Kim case 3: 809e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 810e05df3b1SJaegeuk Kim if (!offset[level - 1]) 811e05df3b1SJaegeuk Kim goto skip_partial; 81258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 813e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 814e05df3b1SJaegeuk Kim goto fail; 815e05df3b1SJaegeuk Kim break; 816e05df3b1SJaegeuk Kim default: 817e05df3b1SJaegeuk Kim BUG(); 818e05df3b1SJaegeuk Kim } 819e05df3b1SJaegeuk Kim 820e05df3b1SJaegeuk Kim skip_partial: 821e05df3b1SJaegeuk Kim while (cont) { 82258bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 823e05df3b1SJaegeuk Kim switch (offset[0]) { 824e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 825e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 826e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 827e05df3b1SJaegeuk Kim break; 828e05df3b1SJaegeuk Kim 829e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 830e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 831e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 832e05df3b1SJaegeuk Kim break; 833e05df3b1SJaegeuk Kim 834e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 835e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 836e05df3b1SJaegeuk Kim cont = 0; 837e05df3b1SJaegeuk Kim break; 838e05df3b1SJaegeuk Kim 839e05df3b1SJaegeuk Kim default: 840e05df3b1SJaegeuk Kim BUG(); 841e05df3b1SJaegeuk Kim } 842e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 843e05df3b1SJaegeuk Kim goto fail; 844e05df3b1SJaegeuk Kim if (offset[1] == 0 && 84558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 846e05df3b1SJaegeuk Kim lock_page(page); 8474ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 848afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 849afcb7ca0SJaegeuk Kim goto restart; 850afcb7ca0SJaegeuk Kim } 8513cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 85258bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 853e05df3b1SJaegeuk Kim set_page_dirty(page); 854e05df3b1SJaegeuk Kim unlock_page(page); 855e05df3b1SJaegeuk Kim } 856e05df3b1SJaegeuk Kim offset[1] = 0; 857e05df3b1SJaegeuk Kim offset[0]++; 858e05df3b1SJaegeuk Kim nofs += err; 859e05df3b1SJaegeuk Kim } 860e05df3b1SJaegeuk Kim fail: 861e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 86251dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 863e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 864e05df3b1SJaegeuk Kim } 865e05df3b1SJaegeuk Kim 8664f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 8674f16fb0fSJaegeuk Kim { 8684081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 8694f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 8704f16fb0fSJaegeuk Kim struct dnode_of_data dn; 8714f16fb0fSJaegeuk Kim struct page *npage; 8724f16fb0fSJaegeuk Kim 8734f16fb0fSJaegeuk Kim if (!nid) 8744f16fb0fSJaegeuk Kim return 0; 8754f16fb0fSJaegeuk Kim 8764f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 8774f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 8784f16fb0fSJaegeuk Kim return PTR_ERR(npage); 8794f16fb0fSJaegeuk Kim 8804f16fb0fSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = 0; 88165985d93SJaegeuk Kim 88265985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 88365985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 88465985d93SJaegeuk Kim 8854f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 8864f16fb0fSJaegeuk Kim 8874f16fb0fSJaegeuk Kim if (page) 88801d2d1aaSChao Yu dn.inode_page_locked = true; 8894f16fb0fSJaegeuk Kim truncate_node(&dn); 8904f16fb0fSJaegeuk Kim return 0; 8914f16fb0fSJaegeuk Kim } 8924f16fb0fSJaegeuk Kim 89339936837SJaegeuk Kim /* 8944f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 8954f4124d0SChao Yu * f2fs_unlock_op(). 89639936837SJaegeuk Kim */ 89758e674d6SGu Zheng void remove_inode_page(struct inode *inode) 898e05df3b1SJaegeuk Kim { 899e05df3b1SJaegeuk Kim struct dnode_of_data dn; 900e05df3b1SJaegeuk Kim 901c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 902c2e69583SJaegeuk Kim if (get_dnode_of_data(&dn, 0, LOOKUP_NODE)) 90358e674d6SGu Zheng return; 904e05df3b1SJaegeuk Kim 905c2e69583SJaegeuk Kim if (truncate_xattr_node(inode, dn.inode_page)) { 906c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 90758e674d6SGu Zheng return; 908e05df3b1SJaegeuk Kim } 909c2e69583SJaegeuk Kim 910c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 911c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 912c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 913c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 914c2e69583SJaegeuk Kim 915e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9169850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9179850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 918c2e69583SJaegeuk Kim 919c2e69583SJaegeuk Kim /* will put inode & node pages */ 920e05df3b1SJaegeuk Kim truncate_node(&dn); 921e05df3b1SJaegeuk Kim } 922e05df3b1SJaegeuk Kim 923a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 924e05df3b1SJaegeuk Kim { 925e05df3b1SJaegeuk Kim struct dnode_of_data dn; 926e05df3b1SJaegeuk Kim 927e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 928e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 92944a83ff6SJaegeuk Kim 93044a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 9318ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 932e05df3b1SJaegeuk Kim } 933e05df3b1SJaegeuk Kim 9348ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 9358ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 936e05df3b1SJaegeuk Kim { 9374081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 938e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 939e05df3b1SJaegeuk Kim struct page *page; 940e05df3b1SJaegeuk Kim int err; 941e05df3b1SJaegeuk Kim 9426bacf52fSJaegeuk Kim if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) 943e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 944e05df3b1SJaegeuk Kim 94554b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), dn->nid); 946e05df3b1SJaegeuk Kim if (!page) 947e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 948e05df3b1SJaegeuk Kim 9496bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 9509c02740cSJaegeuk Kim err = -ENOSPC; 9519c02740cSJaegeuk Kim goto fail; 9529c02740cSJaegeuk Kim } 953e05df3b1SJaegeuk Kim 9549c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 955e05df3b1SJaegeuk Kim 956e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 9579850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 958e05df3b1SJaegeuk Kim new_ni = old_ni; 959e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 960479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 9619c02740cSJaegeuk Kim 96254b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 9639c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 964398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 9659c02740cSJaegeuk Kim SetPageUptodate(page); 9669c02740cSJaegeuk Kim set_page_dirty(page); 967e05df3b1SJaegeuk Kim 9684bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 969479bd73aSJaegeuk Kim F2FS_I(dn->inode)->i_xattr_nid = dn->nid; 970479bd73aSJaegeuk Kim 971e05df3b1SJaegeuk Kim dn->node_page = page; 9728ae8f162SJaegeuk Kim if (ipage) 9738ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 9748ae8f162SJaegeuk Kim else 975e05df3b1SJaegeuk Kim sync_inode_page(dn); 976e05df3b1SJaegeuk Kim if (ofs == 0) 977e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 978e05df3b1SJaegeuk Kim 979e05df3b1SJaegeuk Kim return page; 980e05df3b1SJaegeuk Kim 981e05df3b1SJaegeuk Kim fail: 98271e9fec5SJaegeuk Kim clear_node_page_dirty(page); 983e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 984e05df3b1SJaegeuk Kim return ERR_PTR(err); 985e05df3b1SJaegeuk Kim } 986e05df3b1SJaegeuk Kim 98756ae674cSJaegeuk Kim /* 98856ae674cSJaegeuk Kim * Caller should do after getting the following values. 98956ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 99056ae674cSJaegeuk Kim * LOCKED_PAGE: f2fs_put_page(page, 1) 99156ae674cSJaegeuk Kim * error: nothing 99256ae674cSJaegeuk Kim */ 99393dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 994e05df3b1SJaegeuk Kim { 9954081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 996e05df3b1SJaegeuk Kim struct node_info ni; 997cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 998cf04e8ebSJaegeuk Kim .type = NODE, 999cf04e8ebSJaegeuk Kim .rw = rw, 1000cf04e8ebSJaegeuk Kim }; 1001e05df3b1SJaegeuk Kim 1002e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1003e05df3b1SJaegeuk Kim 10046bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10052bca1e23SJaegeuk Kim ClearPageUptodate(page); 1006393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1007e05df3b1SJaegeuk Kim return -ENOENT; 1008393ff91fSJaegeuk Kim } 1009393ff91fSJaegeuk Kim 101056ae674cSJaegeuk Kim if (PageUptodate(page)) 101156ae674cSJaegeuk Kim return LOCKED_PAGE; 1012393ff91fSJaegeuk Kim 1013cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 1014cf04e8ebSJaegeuk Kim return f2fs_submit_page_bio(sbi, page, &fio); 1015e05df3b1SJaegeuk Kim } 1016e05df3b1SJaegeuk Kim 10170a8165d7SJaegeuk Kim /* 1018e05df3b1SJaegeuk Kim * Readahead a node page 1019e05df3b1SJaegeuk Kim */ 1020e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1021e05df3b1SJaegeuk Kim { 1022e05df3b1SJaegeuk Kim struct page *apage; 102356ae674cSJaegeuk Kim int err; 1024e05df3b1SJaegeuk Kim 10254ef51a8fSJaegeuk Kim apage = find_get_page(NODE_MAPPING(sbi), nid); 1026393ff91fSJaegeuk Kim if (apage && PageUptodate(apage)) { 1027393ff91fSJaegeuk Kim f2fs_put_page(apage, 0); 1028393ff91fSJaegeuk Kim return; 1029393ff91fSJaegeuk Kim } 1030e05df3b1SJaegeuk Kim f2fs_put_page(apage, 0); 1031e05df3b1SJaegeuk Kim 10324ef51a8fSJaegeuk Kim apage = grab_cache_page(NODE_MAPPING(sbi), nid); 1033e05df3b1SJaegeuk Kim if (!apage) 1034e05df3b1SJaegeuk Kim return; 1035e05df3b1SJaegeuk Kim 103656ae674cSJaegeuk Kim err = read_node_page(apage, READA); 103756ae674cSJaegeuk Kim if (err == 0) 1038369a708cSJaegeuk Kim f2fs_put_page(apage, 0); 103956ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 104056ae674cSJaegeuk Kim f2fs_put_page(apage, 1); 1041e05df3b1SJaegeuk Kim } 1042e05df3b1SJaegeuk Kim 1043e05df3b1SJaegeuk Kim struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 1044e05df3b1SJaegeuk Kim { 104556ae674cSJaegeuk Kim struct page *page; 104656ae674cSJaegeuk Kim int err; 1047afcb7ca0SJaegeuk Kim repeat: 104854b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1049e05df3b1SJaegeuk Kim if (!page) 1050e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1051e05df3b1SJaegeuk Kim 1052e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 105356ae674cSJaegeuk Kim if (err < 0) 1054e05df3b1SJaegeuk Kim return ERR_PTR(err); 1055aaf96075SJaegeuk Kim else if (err != LOCKED_PAGE) 1056393ff91fSJaegeuk Kim lock_page(page); 1057aaf96075SJaegeuk Kim 10583bb5e2c8SJaegeuk Kim if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) { 1059aaf96075SJaegeuk Kim ClearPageUptodate(page); 1060393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1061393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1062393ff91fSJaegeuk Kim } 10634ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1064afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1065afcb7ca0SJaegeuk Kim goto repeat; 1066afcb7ca0SJaegeuk Kim } 1067e05df3b1SJaegeuk Kim return page; 1068e05df3b1SJaegeuk Kim } 1069e05df3b1SJaegeuk Kim 10700a8165d7SJaegeuk Kim /* 1071e05df3b1SJaegeuk Kim * Return a locked page for the desired node page. 1072e05df3b1SJaegeuk Kim * And, readahead MAX_RA_NODE number of node pages. 1073e05df3b1SJaegeuk Kim */ 1074e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1075e05df3b1SJaegeuk Kim { 10764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 1077c718379bSJaegeuk Kim struct blk_plug plug; 1078e05df3b1SJaegeuk Kim struct page *page; 107956ae674cSJaegeuk Kim int err, i, end; 108056ae674cSJaegeuk Kim nid_t nid; 1081e05df3b1SJaegeuk Kim 1082e05df3b1SJaegeuk Kim /* First, try getting the desired direct node. */ 1083e05df3b1SJaegeuk Kim nid = get_nid(parent, start, false); 1084e05df3b1SJaegeuk Kim if (!nid) 1085e05df3b1SJaegeuk Kim return ERR_PTR(-ENOENT); 1086afcb7ca0SJaegeuk Kim repeat: 10874ef51a8fSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1088e05df3b1SJaegeuk Kim if (!page) 1089e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1090e05df3b1SJaegeuk Kim 109166d36a29SJaegeuk Kim err = read_node_page(page, READ_SYNC); 109256ae674cSJaegeuk Kim if (err < 0) 1093e05df3b1SJaegeuk Kim return ERR_PTR(err); 109456ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 109556ae674cSJaegeuk Kim goto page_hit; 1096e05df3b1SJaegeuk Kim 1097c718379bSJaegeuk Kim blk_start_plug(&plug); 1098c718379bSJaegeuk Kim 1099e05df3b1SJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 1100e05df3b1SJaegeuk Kim end = start + MAX_RA_NODE; 1101e05df3b1SJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 1102e05df3b1SJaegeuk Kim for (i = start + 1; i < end; i++) { 1103e05df3b1SJaegeuk Kim nid = get_nid(parent, i, false); 1104e05df3b1SJaegeuk Kim if (!nid) 1105e05df3b1SJaegeuk Kim continue; 1106e05df3b1SJaegeuk Kim ra_node_page(sbi, nid); 1107e05df3b1SJaegeuk Kim } 1108e05df3b1SJaegeuk Kim 1109c718379bSJaegeuk Kim blk_finish_plug(&plug); 1110c718379bSJaegeuk Kim 1111e05df3b1SJaegeuk Kim lock_page(page); 11124ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1113afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1114afcb7ca0SJaegeuk Kim goto repeat; 1115afcb7ca0SJaegeuk Kim } 1116e0f56cb4SNamjae Jeon page_hit: 11176bacf52fSJaegeuk Kim if (unlikely(!PageUptodate(page))) { 1118e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1119e05df3b1SJaegeuk Kim return ERR_PTR(-EIO); 1120e05df3b1SJaegeuk Kim } 1121e05df3b1SJaegeuk Kim return page; 1122e05df3b1SJaegeuk Kim } 1123e05df3b1SJaegeuk Kim 1124e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1125e05df3b1SJaegeuk Kim { 1126e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 1127e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->node_page); 1128e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1129e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1130e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 1131e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->inode_page); 1132e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1133e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1134e05df3b1SJaegeuk Kim } else { 113539936837SJaegeuk Kim update_inode_page(dn->inode); 1136e05df3b1SJaegeuk Kim } 1137e05df3b1SJaegeuk Kim } 1138e05df3b1SJaegeuk Kim 1139e05df3b1SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1140e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1141e05df3b1SJaegeuk Kim { 1142e05df3b1SJaegeuk Kim pgoff_t index, end; 1143e05df3b1SJaegeuk Kim struct pagevec pvec; 1144e05df3b1SJaegeuk Kim int step = ino ? 2 : 0; 1145e05df3b1SJaegeuk Kim int nwritten = 0, wrote = 0; 1146e05df3b1SJaegeuk Kim 1147e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1148e05df3b1SJaegeuk Kim 1149e05df3b1SJaegeuk Kim next_step: 1150e05df3b1SJaegeuk Kim index = 0; 1151e05df3b1SJaegeuk Kim end = LONG_MAX; 1152e05df3b1SJaegeuk Kim 1153e05df3b1SJaegeuk Kim while (index <= end) { 1154e05df3b1SJaegeuk Kim int i, nr_pages; 11554ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1156e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1157e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1158e05df3b1SJaegeuk Kim if (nr_pages == 0) 1159e05df3b1SJaegeuk Kim break; 1160e05df3b1SJaegeuk Kim 1161e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1162e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1163e05df3b1SJaegeuk Kim 1164e05df3b1SJaegeuk Kim /* 1165e05df3b1SJaegeuk Kim * flushing sequence with step: 1166e05df3b1SJaegeuk Kim * 0. indirect nodes 1167e05df3b1SJaegeuk Kim * 1. dentry dnodes 1168e05df3b1SJaegeuk Kim * 2. file dnodes 1169e05df3b1SJaegeuk Kim */ 1170e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1171e05df3b1SJaegeuk Kim continue; 1172e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1173e05df3b1SJaegeuk Kim is_cold_node(page))) 1174e05df3b1SJaegeuk Kim continue; 1175e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1176e05df3b1SJaegeuk Kim !is_cold_node(page))) 1177e05df3b1SJaegeuk Kim continue; 1178e05df3b1SJaegeuk Kim 1179e05df3b1SJaegeuk Kim /* 1180e05df3b1SJaegeuk Kim * If an fsync mode, 1181e05df3b1SJaegeuk Kim * we should not skip writing node pages. 1182e05df3b1SJaegeuk Kim */ 1183e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) == ino) 1184e05df3b1SJaegeuk Kim lock_page(page); 1185e05df3b1SJaegeuk Kim else if (!trylock_page(page)) 1186e05df3b1SJaegeuk Kim continue; 1187e05df3b1SJaegeuk Kim 11884ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1189e05df3b1SJaegeuk Kim continue_unlock: 1190e05df3b1SJaegeuk Kim unlock_page(page); 1191e05df3b1SJaegeuk Kim continue; 1192e05df3b1SJaegeuk Kim } 1193e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) != ino) 1194e05df3b1SJaegeuk Kim goto continue_unlock; 1195e05df3b1SJaegeuk Kim 1196e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1197e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1198e05df3b1SJaegeuk Kim goto continue_unlock; 1199e05df3b1SJaegeuk Kim } 1200e05df3b1SJaegeuk Kim 1201e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1202e05df3b1SJaegeuk Kim goto continue_unlock; 1203e05df3b1SJaegeuk Kim 1204e05df3b1SJaegeuk Kim /* called by fsync() */ 1205e05df3b1SJaegeuk Kim if (ino && IS_DNODE(page)) { 1206e05df3b1SJaegeuk Kim set_fsync_mark(page, 1); 120788bd02c9SJaegeuk Kim if (IS_INODE(page)) { 120888bd02c9SJaegeuk Kim if (!is_checkpointed_node(sbi, ino) && 120988bd02c9SJaegeuk Kim !has_fsynced_inode(sbi, ino)) 121088bd02c9SJaegeuk Kim set_dentry_mark(page, 1); 121188bd02c9SJaegeuk Kim else 121288bd02c9SJaegeuk Kim set_dentry_mark(page, 0); 121388bd02c9SJaegeuk Kim } 1214e05df3b1SJaegeuk Kim nwritten++; 1215e05df3b1SJaegeuk Kim } else { 1216e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1217e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 1218e05df3b1SJaegeuk Kim } 121952746519SJaegeuk Kim 122052746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 122152746519SJaegeuk Kim unlock_page(page); 122252746519SJaegeuk Kim else 1223e05df3b1SJaegeuk Kim wrote++; 1224e05df3b1SJaegeuk Kim 1225e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1226e05df3b1SJaegeuk Kim break; 1227e05df3b1SJaegeuk Kim } 1228e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1229e05df3b1SJaegeuk Kim cond_resched(); 1230e05df3b1SJaegeuk Kim 1231e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1232e05df3b1SJaegeuk Kim step = 2; 1233e05df3b1SJaegeuk Kim break; 1234e05df3b1SJaegeuk Kim } 1235e05df3b1SJaegeuk Kim } 1236e05df3b1SJaegeuk Kim 1237e05df3b1SJaegeuk Kim if (step < 2) { 1238e05df3b1SJaegeuk Kim step++; 1239e05df3b1SJaegeuk Kim goto next_step; 1240e05df3b1SJaegeuk Kim } 1241e05df3b1SJaegeuk Kim 1242e05df3b1SJaegeuk Kim if (wrote) 1243458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 1244e05df3b1SJaegeuk Kim return nwritten; 1245e05df3b1SJaegeuk Kim } 1246e05df3b1SJaegeuk Kim 1247cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1248cfe58f9dSJaegeuk Kim { 1249cfe58f9dSJaegeuk Kim pgoff_t index = 0, end = LONG_MAX; 1250cfe58f9dSJaegeuk Kim struct pagevec pvec; 1251cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1252cfe58f9dSJaegeuk Kim 1253cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 12544ef51a8fSJaegeuk Kim 12554ef51a8fSJaegeuk Kim while (index <= end) { 12564ef51a8fSJaegeuk Kim int i, nr_pages; 12574ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1258cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 12594ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 12604ef51a8fSJaegeuk Kim if (nr_pages == 0) 12614ef51a8fSJaegeuk Kim break; 1262cfe58f9dSJaegeuk Kim 1263cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1264cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1265cfe58f9dSJaegeuk Kim 1266cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1267cfb271d4SChao Yu if (unlikely(page->index > end)) 1268cfe58f9dSJaegeuk Kim continue; 1269cfe58f9dSJaegeuk Kim 12704bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 12713cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1272cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1273cfe58f9dSJaegeuk Kim ret = -EIO; 1274cfe58f9dSJaegeuk Kim } 12754bf08ff6SChao Yu } 1276cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1277cfe58f9dSJaegeuk Kim cond_resched(); 1278cfe58f9dSJaegeuk Kim } 1279cfe58f9dSJaegeuk Kim 12804ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1281cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 12824ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1283cfe58f9dSJaegeuk Kim ret2 = -EIO; 1284cfe58f9dSJaegeuk Kim if (!ret) 1285cfe58f9dSJaegeuk Kim ret = ret2; 1286cfe58f9dSJaegeuk Kim return ret; 1287cfe58f9dSJaegeuk Kim } 1288cfe58f9dSJaegeuk Kim 1289e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1290e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1291e05df3b1SJaegeuk Kim { 12924081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1293e05df3b1SJaegeuk Kim nid_t nid; 1294e05df3b1SJaegeuk Kim struct node_info ni; 1295fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 1296fb5566daSJaegeuk Kim .type = NODE, 1297fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 1298fb5566daSJaegeuk Kim }; 1299e05df3b1SJaegeuk Kim 1300ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1301ecda0de3SChao Yu 1302caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 130387a9bd26SJaegeuk Kim goto redirty_out; 1304cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1305cf779cabSJaegeuk Kim goto redirty_out; 130687a9bd26SJaegeuk Kim 13073cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1308e05df3b1SJaegeuk Kim 1309e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1310e05df3b1SJaegeuk Kim nid = nid_of_node(page); 13119850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1312e05df3b1SJaegeuk Kim 1313e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1314e05df3b1SJaegeuk Kim 1315e05df3b1SJaegeuk Kim /* This page is already truncated */ 13166bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 13172bca1e23SJaegeuk Kim ClearPageUptodate(page); 131839936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 131939936837SJaegeuk Kim unlock_page(page); 132039936837SJaegeuk Kim return 0; 132139936837SJaegeuk Kim } 1322e05df3b1SJaegeuk Kim 13232f97c326SJaegeuk Kim if (wbc->for_reclaim) { 13242f97c326SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 132587a9bd26SJaegeuk Kim goto redirty_out; 13262f97c326SJaegeuk Kim } else { 1327b3582c68SChao Yu down_read(&sbi->node_write); 13282f97c326SJaegeuk Kim } 1329cf04e8ebSJaegeuk Kim 1330e05df3b1SJaegeuk Kim set_page_writeback(page); 1331cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 1332cf04e8ebSJaegeuk Kim write_node_page(sbi, page, nid, &fio); 1333cf04e8ebSJaegeuk Kim set_node_addr(sbi, &ni, fio.blk_addr, is_fsync_dnode(page)); 1334e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1335b3582c68SChao Yu up_read(&sbi->node_write); 1336e05df3b1SJaegeuk Kim unlock_page(page); 133727c6bd60SJaegeuk Kim 133827c6bd60SJaegeuk Kim if (wbc->for_reclaim) 133927c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 134027c6bd60SJaegeuk Kim 1341e05df3b1SJaegeuk Kim return 0; 134287a9bd26SJaegeuk Kim 134387a9bd26SJaegeuk Kim redirty_out: 134476f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 134587a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1346e05df3b1SJaegeuk Kim } 1347e05df3b1SJaegeuk Kim 1348e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1349e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1350e05df3b1SJaegeuk Kim { 13514081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 135250c8cdb3SJaegeuk Kim long diff; 1353e05df3b1SJaegeuk Kim 1354e5748434SChao Yu trace_f2fs_writepages(mapping->host, wbc, NODE); 1355e5748434SChao Yu 13564660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 13574660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1358e05df3b1SJaegeuk Kim 1359a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 136087d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1361d3baf95dSJaegeuk Kim goto skip_write; 1362a7fdffbdSJaegeuk Kim 136350c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1364fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 1365e05df3b1SJaegeuk Kim sync_node_pages(sbi, 0, wbc); 136650c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1367e05df3b1SJaegeuk Kim return 0; 1368d3baf95dSJaegeuk Kim 1369d3baf95dSJaegeuk Kim skip_write: 1370d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1371d3baf95dSJaegeuk Kim return 0; 1372e05df3b1SJaegeuk Kim } 1373e05df3b1SJaegeuk Kim 1374e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1375e05df3b1SJaegeuk Kim { 137626c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 137726c6b887SJaegeuk Kim 1378e05df3b1SJaegeuk Kim SetPageUptodate(page); 1379e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1380e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 13814081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1382e05df3b1SJaegeuk Kim SetPagePrivate(page); 13839e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1384e05df3b1SJaegeuk Kim return 1; 1385e05df3b1SJaegeuk Kim } 1386e05df3b1SJaegeuk Kim return 0; 1387e05df3b1SJaegeuk Kim } 1388e05df3b1SJaegeuk Kim 13890a8165d7SJaegeuk Kim /* 1390e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1391e05df3b1SJaegeuk Kim */ 1392e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1393e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1394e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1395e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1396487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1397487261f3SChao Yu .releasepage = f2fs_release_page, 1398e05df3b1SJaegeuk Kim }; 1399e05df3b1SJaegeuk Kim 14008a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 14018a7ed66aSJaegeuk Kim nid_t n) 1402e05df3b1SJaegeuk Kim { 14038a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 14043aa770a9SNamjae Jeon } 1405e05df3b1SJaegeuk Kim 14068a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 14078a7ed66aSJaegeuk Kim struct free_nid *i) 1408e05df3b1SJaegeuk Kim { 1409e05df3b1SJaegeuk Kim list_del(&i->list); 14108a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1411e05df3b1SJaegeuk Kim } 1412e05df3b1SJaegeuk Kim 14136fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1414e05df3b1SJaegeuk Kim { 14156fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1416e05df3b1SJaegeuk Kim struct free_nid *i; 141759bbd474SJaegeuk Kim struct nat_entry *ne; 141859bbd474SJaegeuk Kim bool allocated = false; 1419e05df3b1SJaegeuk Kim 14206fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 142123d38844SHaicheng Li return -1; 14229198acebSJaegeuk Kim 14239198acebSJaegeuk Kim /* 0 nid should not be used */ 1424cfb271d4SChao Yu if (unlikely(nid == 0)) 14259198acebSJaegeuk Kim return 0; 142659bbd474SJaegeuk Kim 14277bd59381SGu Zheng if (build) { 142859bbd474SJaegeuk Kim /* do not add allocated nids */ 14298b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 143059bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 14318a7ed66aSJaegeuk Kim if (ne && 14327ef35e3bSJaegeuk Kim (!get_nat_flag(ne, IS_CHECKPOINTED) || 14337ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 143459bbd474SJaegeuk Kim allocated = true; 14358b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 143659bbd474SJaegeuk Kim if (allocated) 143759bbd474SJaegeuk Kim return 0; 1438e05df3b1SJaegeuk Kim } 14397bd59381SGu Zheng 14407bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1441e05df3b1SJaegeuk Kim i->nid = nid; 1442e05df3b1SJaegeuk Kim i->state = NID_NEW; 1443e05df3b1SJaegeuk Kim 1444769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1445769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1446769ec6e5SJaegeuk Kim return 0; 1447769ec6e5SJaegeuk Kim } 1448769ec6e5SJaegeuk Kim 1449e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14508a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1451e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1452769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1453e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1454e05df3b1SJaegeuk Kim return 0; 1455e05df3b1SJaegeuk Kim } 1456e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1457e05df3b1SJaegeuk Kim nm_i->fcnt++; 1458e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1459769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1460e05df3b1SJaegeuk Kim return 1; 1461e05df3b1SJaegeuk Kim } 1462e05df3b1SJaegeuk Kim 1463e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1464e05df3b1SJaegeuk Kim { 1465e05df3b1SJaegeuk Kim struct free_nid *i; 1466cf0ee0f0SChao Yu bool need_free = false; 1467cf0ee0f0SChao Yu 1468e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14698a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1470e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 14718a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1472e05df3b1SJaegeuk Kim nm_i->fcnt--; 1473cf0ee0f0SChao Yu need_free = true; 1474e05df3b1SJaegeuk Kim } 1475e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1476cf0ee0f0SChao Yu 1477cf0ee0f0SChao Yu if (need_free) 1478cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1479e05df3b1SJaegeuk Kim } 1480e05df3b1SJaegeuk Kim 14816fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1482e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1483e05df3b1SJaegeuk Kim { 14846fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1485e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1486e05df3b1SJaegeuk Kim block_t blk_addr; 1487e05df3b1SJaegeuk Kim int i; 1488e05df3b1SJaegeuk Kim 1489e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1490e05df3b1SJaegeuk Kim 1491e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 149223d38844SHaicheng Li 1493cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 149404431c44SJaegeuk Kim break; 149523d38844SHaicheng Li 1496e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 14979850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 149823d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 14996fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 150023d38844SHaicheng Li break; 150123d38844SHaicheng Li } 1502e05df3b1SJaegeuk Kim } 1503e05df3b1SJaegeuk Kim } 1504e05df3b1SJaegeuk Kim 1505e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1506e05df3b1SJaegeuk Kim { 1507e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1508e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1509e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 15108760952dSHaicheng Li int i = 0; 151155008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1512e05df3b1SJaegeuk Kim 151355008d84SJaegeuk Kim /* Enough entries */ 151455008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 151555008d84SJaegeuk Kim return; 1516e05df3b1SJaegeuk Kim 151755008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 1518662befdaSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT); 1519e05df3b1SJaegeuk Kim 1520e05df3b1SJaegeuk Kim while (1) { 1521e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1522e05df3b1SJaegeuk Kim 15236fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1524e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1525e05df3b1SJaegeuk Kim 1526e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1527cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1528e05df3b1SJaegeuk Kim nid = 0; 152955008d84SJaegeuk Kim 153055008d84SJaegeuk Kim if (i++ == FREE_NID_PAGES) 1531e05df3b1SJaegeuk Kim break; 1532e05df3b1SJaegeuk Kim } 1533e05df3b1SJaegeuk Kim 153455008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 153555008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1536e05df3b1SJaegeuk Kim 1537e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1538e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1539e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1540e05df3b1SJaegeuk Kim block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr); 1541e05df3b1SJaegeuk Kim nid = le32_to_cpu(nid_in_journal(sum, i)); 1542e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 15436fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1544e05df3b1SJaegeuk Kim else 1545e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1546e05df3b1SJaegeuk Kim } 1547e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1548e05df3b1SJaegeuk Kim } 1549e05df3b1SJaegeuk Kim 1550e05df3b1SJaegeuk Kim /* 1551e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1552e05df3b1SJaegeuk Kim * from second parameter of this function. 1553e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1554e05df3b1SJaegeuk Kim */ 1555e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1556e05df3b1SJaegeuk Kim { 1557e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1558e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1559e05df3b1SJaegeuk Kim retry: 15607ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1561e05df3b1SJaegeuk Kim return false; 1562e05df3b1SJaegeuk Kim 1563e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1564e05df3b1SJaegeuk Kim 156555008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1566f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 15679850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 15682d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1569e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1570e05df3b1SJaegeuk Kim break; 1571e05df3b1SJaegeuk Kim 15729850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1573e05df3b1SJaegeuk Kim *nid = i->nid; 1574e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1575e05df3b1SJaegeuk Kim nm_i->fcnt--; 1576e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1577e05df3b1SJaegeuk Kim return true; 1578e05df3b1SJaegeuk Kim } 157955008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 158055008d84SJaegeuk Kim 158155008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 158255008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 158355008d84SJaegeuk Kim build_free_nids(sbi); 158455008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 158555008d84SJaegeuk Kim goto retry; 158655008d84SJaegeuk Kim } 1587e05df3b1SJaegeuk Kim 15880a8165d7SJaegeuk Kim /* 1589e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1590e05df3b1SJaegeuk Kim */ 1591e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1592e05df3b1SJaegeuk Kim { 1593e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1594e05df3b1SJaegeuk Kim struct free_nid *i; 1595e05df3b1SJaegeuk Kim 1596e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 15978a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 15989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 15998a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1600e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1601cf0ee0f0SChao Yu 1602cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1603e05df3b1SJaegeuk Kim } 1604e05df3b1SJaegeuk Kim 16050a8165d7SJaegeuk Kim /* 1606e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1607e05df3b1SJaegeuk Kim */ 1608e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1609e05df3b1SJaegeuk Kim { 161049952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 161149952fa1SJaegeuk Kim struct free_nid *i; 1612cf0ee0f0SChao Yu bool need_free = false; 161349952fa1SJaegeuk Kim 161465985d93SJaegeuk Kim if (!nid) 161565985d93SJaegeuk Kim return; 161665985d93SJaegeuk Kim 161749952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16188a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16199850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16206fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 16218a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1622cf0ee0f0SChao Yu need_free = true; 162395630cbaSHaicheng Li } else { 162449952fa1SJaegeuk Kim i->state = NID_NEW; 162549952fa1SJaegeuk Kim nm_i->fcnt++; 162695630cbaSHaicheng Li } 162749952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1628cf0ee0f0SChao Yu 1629cf0ee0f0SChao Yu if (need_free) 1630cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1631e05df3b1SJaegeuk Kim } 1632e05df3b1SJaegeuk Kim 163370cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 163428cdce04SChao Yu { 163528cdce04SChao Yu void *src_addr, *dst_addr; 163628cdce04SChao Yu size_t inline_size; 163728cdce04SChao Yu struct page *ipage; 163828cdce04SChao Yu struct f2fs_inode *ri; 163928cdce04SChao Yu 16404081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 16419850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 164228cdce04SChao Yu 1643e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1644e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 1645e3b4d43fSJaegeuk Kim clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); 1646e3b4d43fSJaegeuk Kim goto update_inode; 1647e3b4d43fSJaegeuk Kim } 1648e3b4d43fSJaegeuk Kim 164928cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 165028cdce04SChao Yu src_addr = inline_xattr_addr(page); 165128cdce04SChao Yu inline_size = inline_xattr_size(inode); 165228cdce04SChao Yu 165354b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE); 165428cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1655e3b4d43fSJaegeuk Kim update_inode: 165628cdce04SChao Yu update_inode(inode, ipage); 165728cdce04SChao Yu f2fs_put_page(ipage, 1); 165828cdce04SChao Yu } 165928cdce04SChao Yu 16601c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1661abb2366cSJaegeuk Kim { 16624081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1663abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1664abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1665abb2366cSJaegeuk Kim struct node_info ni; 1666abb2366cSJaegeuk Kim 1667abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1668abb2366cSJaegeuk Kim if (!prev_xnid) 1669abb2366cSJaegeuk Kim goto recover_xnid; 1670abb2366cSJaegeuk Kim 1671abb2366cSJaegeuk Kim /* Deallocate node address */ 1672abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 16739850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1674abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1675abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1676479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1677abb2366cSJaegeuk Kim 1678abb2366cSJaegeuk Kim recover_xnid: 1679abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1680abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 16819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1682abb2366cSJaegeuk Kim 1683abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1684abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1685abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1686479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1687abb2366cSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = new_xnid; 1688abb2366cSJaegeuk Kim 1689abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1690abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1691479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1692abb2366cSJaegeuk Kim 1693abb2366cSJaegeuk Kim update_inode_page(inode); 1694abb2366cSJaegeuk Kim } 1695abb2366cSJaegeuk Kim 1696e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 1697e05df3b1SJaegeuk Kim { 169858bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 1699e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 1700e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1701e05df3b1SJaegeuk Kim struct page *ipage; 1702e05df3b1SJaegeuk Kim 1703e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 1704e8271fa3SJaegeuk Kim 1705e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 1706e8271fa3SJaegeuk Kim return -EINVAL; 1707e8271fa3SJaegeuk Kim 17084ef51a8fSJaegeuk Kim ipage = grab_cache_page(NODE_MAPPING(sbi), ino); 1709e05df3b1SJaegeuk Kim if (!ipage) 1710e05df3b1SJaegeuk Kim return -ENOMEM; 1711e05df3b1SJaegeuk Kim 1712e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 1713e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 1714e05df3b1SJaegeuk Kim 1715e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 1716e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 1717e05df3b1SJaegeuk Kim 171858bfaf44SJaegeuk Kim src = F2FS_INODE(page); 171958bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 1720e05df3b1SJaegeuk Kim 172158bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 172258bfaf44SJaegeuk Kim dst->i_size = 0; 172358bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 172458bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 172558bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 1726617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 1727e05df3b1SJaegeuk Kim 1728e05df3b1SJaegeuk Kim new_ni = old_ni; 1729e05df3b1SJaegeuk Kim new_ni.ino = ino; 1730e05df3b1SJaegeuk Kim 1731cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 173265e5cd0aSJaegeuk Kim WARN_ON(1); 1733479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 1734e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1735617deb8cSJaegeuk Kim set_page_dirty(ipage); 1736e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 1737e05df3b1SJaegeuk Kim return 0; 1738e05df3b1SJaegeuk Kim } 1739e05df3b1SJaegeuk Kim 1740e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 1741e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 1742e05df3b1SJaegeuk Kim { 1743e05df3b1SJaegeuk Kim struct f2fs_node *rn; 1744e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 1745e05df3b1SJaegeuk Kim block_t addr; 174690a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 17479ecf4b80SChao Yu int i, idx, last_offset, nrpages; 1748e05df3b1SJaegeuk Kim 1749e05df3b1SJaegeuk Kim /* scan the node segment */ 1750e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 1751e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 1752e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 1753e05df3b1SJaegeuk Kim 17549ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 17559af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 1756393ff91fSJaegeuk Kim 17579af0ff1cSChao Yu /* readahead node pages */ 17589ecf4b80SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR); 17599af0ff1cSChao Yu 17609ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 17619ecf4b80SChao Yu struct page *page = get_meta_page(sbi, idx); 1762393ff91fSJaegeuk Kim 17639ecf4b80SChao Yu rn = F2FS_NODE(page); 1764393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 1765393ff91fSJaegeuk Kim sum_entry->version = 0; 1766393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 17679af0ff1cSChao Yu sum_entry++; 17689ecf4b80SChao Yu f2fs_put_page(page, 1); 17699af0ff1cSChao Yu } 1770bac4eef6SChao Yu 17719ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 1772bac4eef6SChao Yu addr + nrpages); 17739af0ff1cSChao Yu } 17749ecf4b80SChao Yu return 0; 1775e05df3b1SJaegeuk Kim } 1776e05df3b1SJaegeuk Kim 1777aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 1778e05df3b1SJaegeuk Kim { 1779e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1780e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1781e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1782e05df3b1SJaegeuk Kim int i; 1783e05df3b1SJaegeuk Kim 1784e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1785e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1786e05df3b1SJaegeuk Kim struct nat_entry *ne; 1787e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 1788e05df3b1SJaegeuk Kim nid_t nid = le32_to_cpu(nid_in_journal(sum, i)); 1789e05df3b1SJaegeuk Kim 1790e05df3b1SJaegeuk Kim raw_ne = nat_in_journal(sum, i); 17919be32d72SJaegeuk Kim 17928b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 1793e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1794e05df3b1SJaegeuk Kim if (!ne) { 17959be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 179694dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 17979be32d72SJaegeuk Kim } 1798e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 17998b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 1800e05df3b1SJaegeuk Kim } 1801e05df3b1SJaegeuk Kim update_nats_in_cursum(sum, -i); 1802e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1803e05df3b1SJaegeuk Kim } 1804e05df3b1SJaegeuk Kim 1805309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 1806309cc2b6SJaegeuk Kim struct list_head *head, int max) 1807e05df3b1SJaegeuk Kim { 1808309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 1809e05df3b1SJaegeuk Kim 1810309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 1811309cc2b6SJaegeuk Kim goto add_out; 1812e05df3b1SJaegeuk Kim 1813309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 1814309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 1815309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 1816309cc2b6SJaegeuk Kim return; 1817309cc2b6SJaegeuk Kim } 1818309cc2b6SJaegeuk Kim } 1819309cc2b6SJaegeuk Kim add_out: 1820309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 1821aec71382SChao Yu } 1822aec71382SChao Yu 1823309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 1824309cc2b6SJaegeuk Kim struct nat_entry_set *set) 1825309cc2b6SJaegeuk Kim { 1826309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1827309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1828309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 1829309cc2b6SJaegeuk Kim bool to_journal = true; 1830309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 1831309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 1832309cc2b6SJaegeuk Kim struct page *page = NULL; 1833aec71382SChao Yu 1834aec71382SChao Yu /* 1835aec71382SChao Yu * there are two steps to flush nat entries: 1836aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 1837aec71382SChao Yu * #2, flush nat entries to nat page. 1838aec71382SChao Yu */ 1839309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) 1840aec71382SChao Yu to_journal = false; 1841aec71382SChao Yu 1842aec71382SChao Yu if (to_journal) { 1843aec71382SChao Yu mutex_lock(&curseg->curseg_mutex); 1844aec71382SChao Yu } else { 1845e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 1846e05df3b1SJaegeuk Kim nat_blk = page_address(page); 18479850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 1848e05df3b1SJaegeuk Kim } 1849e05df3b1SJaegeuk Kim 1850aec71382SChao Yu /* flush dirty nats in nat entry set */ 1851309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 1852aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 1853aec71382SChao Yu nid_t nid = nat_get_nid(ne); 1854aec71382SChao Yu int offset; 1855aec71382SChao Yu 1856309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 1857309cc2b6SJaegeuk Kim continue; 1858309cc2b6SJaegeuk Kim 1859aec71382SChao Yu if (to_journal) { 1860aec71382SChao Yu offset = lookup_journal_in_cursum(sum, 1861aec71382SChao Yu NAT_JOURNAL, nid, 1); 18629850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 1863aec71382SChao Yu raw_ne = &nat_in_journal(sum, offset); 1864aec71382SChao Yu nid_in_journal(sum, offset) = cpu_to_le32(nid); 1865aec71382SChao Yu } else { 1866aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 1867aec71382SChao Yu } 1868aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 1869aec71382SChao Yu 18708b26ef98SJaegeuk Kim down_write(&NM_I(sbi)->nat_tree_lock); 187188bd02c9SJaegeuk Kim nat_reset_flag(ne); 1872309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 18738b26ef98SJaegeuk Kim up_write(&NM_I(sbi)->nat_tree_lock); 1874309cc2b6SJaegeuk Kim 1875309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 1876309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 1877e05df3b1SJaegeuk Kim } 1878aec71382SChao Yu 1879aec71382SChao Yu if (to_journal) 1880e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1881aec71382SChao Yu else 1882e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1883aec71382SChao Yu 188480ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 188580ec2e91SChangman Lee 1886309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 1887309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 1888309cc2b6SJaegeuk Kim } 1889aec71382SChao Yu 1890309cc2b6SJaegeuk Kim /* 1891309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 1892309cc2b6SJaegeuk Kim */ 1893309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 1894309cc2b6SJaegeuk Kim { 1895309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1896309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1897309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 18987aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 1899309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 1900309cc2b6SJaegeuk Kim unsigned int found; 1901309cc2b6SJaegeuk Kim nid_t set_idx = 0; 1902309cc2b6SJaegeuk Kim LIST_HEAD(sets); 1903309cc2b6SJaegeuk Kim 190420d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 190520d047c8SChangman Lee return; 1906309cc2b6SJaegeuk Kim /* 1907309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 1908309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 1909309cc2b6SJaegeuk Kim * into nat entry set. 1910309cc2b6SJaegeuk Kim */ 1911309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 1912309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 1913309cc2b6SJaegeuk Kim 1914309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 19157aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 1916309cc2b6SJaegeuk Kim unsigned idx; 1917309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 1918309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 1919309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 1920309cc2b6SJaegeuk Kim MAX_NAT_JENTRIES(sum)); 1921309cc2b6SJaegeuk Kim } 1922309cc2b6SJaegeuk Kim 1923309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 1924309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 1925309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 1926309cc2b6SJaegeuk Kim 19279850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 1928e05df3b1SJaegeuk Kim } 1929e05df3b1SJaegeuk Kim 1930e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 1931e05df3b1SJaegeuk Kim { 1932e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 1933e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1934e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 1935e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 1936e05df3b1SJaegeuk Kim 1937e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 1938e05df3b1SJaegeuk Kim 1939e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 1940e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 1941e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 1942b63da15eSJaegeuk Kim 19437ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 19447ee0eeabSJaegeuk Kim 1945b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 1946c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 1947e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 1948e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 1949cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 1950e05df3b1SJaegeuk Kim 19518a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 1952e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 1953769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 1954769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 1955e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 1956e05df3b1SJaegeuk Kim 1957e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 1958e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 19598b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 1960e05df3b1SJaegeuk Kim 1961e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 196279b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 1963e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 1964e05df3b1SJaegeuk Kim if (!version_bitmap) 1965e05df3b1SJaegeuk Kim return -EFAULT; 1966e05df3b1SJaegeuk Kim 196779b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 196879b5793bSAlexandru Gheorghiu GFP_KERNEL); 196979b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 197079b5793bSAlexandru Gheorghiu return -ENOMEM; 1971e05df3b1SJaegeuk Kim return 0; 1972e05df3b1SJaegeuk Kim } 1973e05df3b1SJaegeuk Kim 1974e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 1975e05df3b1SJaegeuk Kim { 1976e05df3b1SJaegeuk Kim int err; 1977e05df3b1SJaegeuk Kim 1978e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 1979e05df3b1SJaegeuk Kim if (!sbi->nm_info) 1980e05df3b1SJaegeuk Kim return -ENOMEM; 1981e05df3b1SJaegeuk Kim 1982e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 1983e05df3b1SJaegeuk Kim if (err) 1984e05df3b1SJaegeuk Kim return err; 1985e05df3b1SJaegeuk Kim 1986e05df3b1SJaegeuk Kim build_free_nids(sbi); 1987e05df3b1SJaegeuk Kim return 0; 1988e05df3b1SJaegeuk Kim } 1989e05df3b1SJaegeuk Kim 1990e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 1991e05df3b1SJaegeuk Kim { 1992e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1993e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 1994e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 19957aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 1996e05df3b1SJaegeuk Kim nid_t nid = 0; 1997e05df3b1SJaegeuk Kim unsigned int found; 1998e05df3b1SJaegeuk Kim 1999e05df3b1SJaegeuk Kim if (!nm_i) 2000e05df3b1SJaegeuk Kim return; 2001e05df3b1SJaegeuk Kim 2002e05df3b1SJaegeuk Kim /* destroy free nid list */ 2003e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2004e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 20059850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 20068a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2007e05df3b1SJaegeuk Kim nm_i->fcnt--; 2008cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2009cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2010cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2011e05df3b1SJaegeuk Kim } 20129850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2013e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2014e05df3b1SJaegeuk Kim 2015e05df3b1SJaegeuk Kim /* destroy nat cache */ 20168b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2017e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2018e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2019e05df3b1SJaegeuk Kim unsigned idx; 20207aed0d45SJaegeuk Kim 2021b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2022b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2023b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2024e05df3b1SJaegeuk Kim } 20259850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 20267aed0d45SJaegeuk Kim 20277aed0d45SJaegeuk Kim /* destroy nat set cache */ 20287aed0d45SJaegeuk Kim nid = 0; 20297aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 20307aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 20317aed0d45SJaegeuk Kim unsigned idx; 20327aed0d45SJaegeuk Kim 20337aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 20347aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 20357aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 20367aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 20377aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 20387aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 20397aed0d45SJaegeuk Kim } 20407aed0d45SJaegeuk Kim } 20418b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2042e05df3b1SJaegeuk Kim 2043e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2044e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2045e05df3b1SJaegeuk Kim kfree(nm_i); 2046e05df3b1SJaegeuk Kim } 2047e05df3b1SJaegeuk Kim 20486e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2049e05df3b1SJaegeuk Kim { 2050e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2051e8512d2eSGu Zheng sizeof(struct nat_entry)); 2052e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2053aec71382SChao Yu goto fail; 2054e05df3b1SJaegeuk Kim 2055e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2056e8512d2eSGu Zheng sizeof(struct free_nid)); 2057aec71382SChao Yu if (!free_nid_slab) 2058ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2059aec71382SChao Yu 2060aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2061aec71382SChao Yu sizeof(struct nat_entry_set)); 2062aec71382SChao Yu if (!nat_entry_set_slab) 2063ce3e6d25SMarkus Elfring goto destroy_free_nid; 2064e05df3b1SJaegeuk Kim return 0; 2065aec71382SChao Yu 2066ce3e6d25SMarkus Elfring destroy_free_nid: 2067aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2068ce3e6d25SMarkus Elfring destroy_nat_entry: 2069aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2070aec71382SChao Yu fail: 2071aec71382SChao Yu return -ENOMEM; 2072e05df3b1SJaegeuk Kim } 2073e05df3b1SJaegeuk Kim 2074e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2075e05df3b1SJaegeuk Kim { 2076aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2077e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2078e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2079e05df3b1SJaegeuk Kim } 2080