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) { 56a88a341aSTejun Heo if (sbi->sb->s_bdi->wb.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 { 73a88a341aSTejun Heo if (sbi->sb->s_bdi->wb.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 1982dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 1992dcf51abSJaegeuk Kim { 2002dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2012dcf51abSJaegeuk Kim struct nat_entry *e; 2022dcf51abSJaegeuk Kim bool need = false; 2032dcf51abSJaegeuk Kim 2042dcf51abSJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2052dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2062dcf51abSJaegeuk Kim if (e) { 2072dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2082dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2092dcf51abSJaegeuk Kim need = true; 2102dcf51abSJaegeuk Kim } 2112dcf51abSJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2122dcf51abSJaegeuk Kim return need; 2132dcf51abSJaegeuk Kim } 2142dcf51abSJaegeuk Kim 21588bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 216e05df3b1SJaegeuk Kim { 217e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 218e05df3b1SJaegeuk Kim struct nat_entry *e; 21988bd02c9SJaegeuk Kim bool is_cp = true; 220e05df3b1SJaegeuk Kim 2218b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 222e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2237ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22488bd02c9SJaegeuk Kim is_cp = false; 2258b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 226e05df3b1SJaegeuk Kim return is_cp; 227e05df3b1SJaegeuk Kim } 228e05df3b1SJaegeuk Kim 22988bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 230b6fe5873SJaegeuk Kim { 231b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 232b6fe5873SJaegeuk Kim struct nat_entry *e; 23388bd02c9SJaegeuk Kim bool need_update = true; 234b6fe5873SJaegeuk Kim 2358b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23688bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 23788bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23888bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 23988bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24088bd02c9SJaegeuk Kim need_update = false; 2418b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24288bd02c9SJaegeuk Kim return need_update; 243b6fe5873SJaegeuk Kim } 244b6fe5873SJaegeuk Kim 245e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 246e05df3b1SJaegeuk Kim { 247e05df3b1SJaegeuk Kim struct nat_entry *new; 248e05df3b1SJaegeuk Kim 2499be32d72SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_ATOMIC); 2509be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 251e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 252e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25388bd02c9SJaegeuk Kim nat_reset_flag(new); 254e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 255e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 256e05df3b1SJaegeuk Kim return new; 257e05df3b1SJaegeuk Kim } 258e05df3b1SJaegeuk Kim 259e05df3b1SJaegeuk Kim static void cache_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 260e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 261e05df3b1SJaegeuk Kim { 262e05df3b1SJaegeuk Kim struct nat_entry *e; 2639be32d72SJaegeuk Kim 2648b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 265e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 266e05df3b1SJaegeuk Kim if (!e) { 267e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 26894dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 269e05df3b1SJaegeuk Kim } 2708b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 271e05df3b1SJaegeuk Kim } 272e05df3b1SJaegeuk Kim 273e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 274479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 275e05df3b1SJaegeuk Kim { 276e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 277e05df3b1SJaegeuk Kim struct nat_entry *e; 2789be32d72SJaegeuk Kim 2798b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 280e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 281e05df3b1SJaegeuk Kim if (!e) { 282e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2835c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2849850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 285e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 286e05df3b1SJaegeuk Kim /* 287e05df3b1SJaegeuk Kim * when nid is reallocated, 288e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 289e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 290e05df3b1SJaegeuk Kim */ 2915c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2929850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 293e05df3b1SJaegeuk Kim } 294e05df3b1SJaegeuk Kim 295e05df3b1SJaegeuk Kim /* sanity check */ 2969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 2979850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 298e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 2999850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 300e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3019850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 302e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 303e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 304e05df3b1SJaegeuk Kim 305e1c42045Sarter97 /* increment version no as node is removed */ 306e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 307e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 308e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 309e05df3b1SJaegeuk Kim } 310e05df3b1SJaegeuk Kim 311e05df3b1SJaegeuk Kim /* change address */ 312e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 31388bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 31488bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 315e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 316479f40c4SJaegeuk Kim 317479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 318d5b692b7SChao Yu if (ni->nid != ni->ino) 319479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 32088bd02c9SJaegeuk Kim if (e) { 32188bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 32288bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 32388bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 32488bd02c9SJaegeuk Kim } 3258b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 326e05df3b1SJaegeuk Kim } 327e05df3b1SJaegeuk Kim 3284660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 329e05df3b1SJaegeuk Kim { 330e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3311b38dc8eSJaegeuk Kim int nr = nr_shrink; 332e05df3b1SJaegeuk Kim 3331b38dc8eSJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 334e05df3b1SJaegeuk Kim return 0; 335e05df3b1SJaegeuk Kim 336e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 337e05df3b1SJaegeuk Kim struct nat_entry *ne; 338e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 339e05df3b1SJaegeuk Kim struct nat_entry, list); 340e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 341e05df3b1SJaegeuk Kim nr_shrink--; 342e05df3b1SJaegeuk Kim } 3438b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3441b38dc8eSJaegeuk Kim return nr - nr_shrink; 345e05df3b1SJaegeuk Kim } 346e05df3b1SJaegeuk Kim 3470a8165d7SJaegeuk Kim /* 348e1c42045Sarter97 * This function always returns success 349e05df3b1SJaegeuk Kim */ 350e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 351e05df3b1SJaegeuk Kim { 352e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 353e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 354e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 355e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 356e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 357e05df3b1SJaegeuk Kim struct page *page = NULL; 358e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 359e05df3b1SJaegeuk Kim struct nat_entry *e; 360e05df3b1SJaegeuk Kim int i; 361e05df3b1SJaegeuk Kim 362e05df3b1SJaegeuk Kim ni->nid = nid; 363e05df3b1SJaegeuk Kim 364e05df3b1SJaegeuk Kim /* Check nat cache */ 3658b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 366e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 367e05df3b1SJaegeuk Kim if (e) { 368e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 369e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 370e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 371e05df3b1SJaegeuk Kim } 3728b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 373e05df3b1SJaegeuk Kim if (e) 374e05df3b1SJaegeuk Kim return; 375e05df3b1SJaegeuk Kim 3763547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3773547ea96SJaegeuk Kim 378e05df3b1SJaegeuk Kim /* Check current segment summary */ 379e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 380e05df3b1SJaegeuk Kim i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0); 381e05df3b1SJaegeuk Kim if (i >= 0) { 382e05df3b1SJaegeuk Kim ne = nat_in_journal(sum, i); 383e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 384e05df3b1SJaegeuk Kim } 385e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 386e05df3b1SJaegeuk Kim if (i >= 0) 387e05df3b1SJaegeuk Kim goto cache; 388e05df3b1SJaegeuk Kim 389e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 390e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 391e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 392e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 393e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 394e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 395e05df3b1SJaegeuk Kim cache: 396e05df3b1SJaegeuk Kim /* cache nat entry */ 397e05df3b1SJaegeuk Kim cache_nat_entry(NM_I(sbi), nid, &ne); 398e05df3b1SJaegeuk Kim } 399e05df3b1SJaegeuk Kim 4000a8165d7SJaegeuk Kim /* 401e05df3b1SJaegeuk Kim * The maximum depth is four. 402e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 403e05df3b1SJaegeuk Kim */ 404de93653fSJaegeuk Kim static int get_node_path(struct f2fs_inode_info *fi, long block, 405de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 406e05df3b1SJaegeuk Kim { 407de93653fSJaegeuk Kim const long direct_index = ADDRS_PER_INODE(fi); 408e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 409e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 410e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 411e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 412e05df3b1SJaegeuk Kim int n = 0; 413e05df3b1SJaegeuk Kim int level = 0; 414e05df3b1SJaegeuk Kim 415e05df3b1SJaegeuk Kim noffset[0] = 0; 416e05df3b1SJaegeuk Kim 417e05df3b1SJaegeuk Kim if (block < direct_index) { 41825c0a6e5SNamjae Jeon offset[n] = block; 419e05df3b1SJaegeuk Kim goto got; 420e05df3b1SJaegeuk Kim } 421e05df3b1SJaegeuk Kim block -= direct_index; 422e05df3b1SJaegeuk Kim if (block < direct_blks) { 423e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 424e05df3b1SJaegeuk Kim noffset[n] = 1; 42525c0a6e5SNamjae Jeon offset[n] = block; 426e05df3b1SJaegeuk Kim level = 1; 427e05df3b1SJaegeuk Kim goto got; 428e05df3b1SJaegeuk Kim } 429e05df3b1SJaegeuk Kim block -= direct_blks; 430e05df3b1SJaegeuk Kim if (block < direct_blks) { 431e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 432e05df3b1SJaegeuk Kim noffset[n] = 2; 43325c0a6e5SNamjae Jeon offset[n] = block; 434e05df3b1SJaegeuk Kim level = 1; 435e05df3b1SJaegeuk Kim goto got; 436e05df3b1SJaegeuk Kim } 437e05df3b1SJaegeuk Kim block -= direct_blks; 438e05df3b1SJaegeuk Kim if (block < indirect_blks) { 439e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 440e05df3b1SJaegeuk Kim noffset[n] = 3; 441e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 442e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 44325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 444e05df3b1SJaegeuk Kim level = 2; 445e05df3b1SJaegeuk Kim goto got; 446e05df3b1SJaegeuk Kim } 447e05df3b1SJaegeuk Kim block -= indirect_blks; 448e05df3b1SJaegeuk Kim if (block < indirect_blks) { 449e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 450e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 451e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 452e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 45325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 454e05df3b1SJaegeuk Kim level = 2; 455e05df3b1SJaegeuk Kim goto got; 456e05df3b1SJaegeuk Kim } 457e05df3b1SJaegeuk Kim block -= indirect_blks; 458e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 459e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 460e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 461e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 462e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 463e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 464e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 465e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 466e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 467e05df3b1SJaegeuk Kim offset[n - 1]; 46825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 469e05df3b1SJaegeuk Kim level = 3; 470e05df3b1SJaegeuk Kim goto got; 471e05df3b1SJaegeuk Kim } else { 472e05df3b1SJaegeuk Kim BUG(); 473e05df3b1SJaegeuk Kim } 474e05df3b1SJaegeuk Kim got: 475e05df3b1SJaegeuk Kim return level; 476e05df3b1SJaegeuk Kim } 477e05df3b1SJaegeuk Kim 478e05df3b1SJaegeuk Kim /* 479e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 4804f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 4814f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 48239936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 483e05df3b1SJaegeuk Kim */ 484266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 485e05df3b1SJaegeuk Kim { 4864081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 487e05df3b1SJaegeuk Kim struct page *npage[4]; 488f1a3b98eSJaegeuk Kim struct page *parent = NULL; 489e05df3b1SJaegeuk Kim int offset[4]; 490e05df3b1SJaegeuk Kim unsigned int noffset[4]; 491e05df3b1SJaegeuk Kim nid_t nids[4]; 492e05df3b1SJaegeuk Kim int level, i; 493e05df3b1SJaegeuk Kim int err = 0; 494e05df3b1SJaegeuk Kim 495de93653fSJaegeuk Kim level = get_node_path(F2FS_I(dn->inode), index, offset, noffset); 496e05df3b1SJaegeuk Kim 497e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 4981646cfacSJaegeuk Kim npage[0] = dn->inode_page; 4991646cfacSJaegeuk Kim 5001646cfacSJaegeuk Kim if (!npage[0]) { 501e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 502e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 503e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5041646cfacSJaegeuk Kim } 505f1a3b98eSJaegeuk Kim 506f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 507f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 50876629165SJaegeuk Kim err = -ENOENT; 509f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 510f1a3b98eSJaegeuk Kim goto release_out; 511f1a3b98eSJaegeuk Kim } 512f1a3b98eSJaegeuk Kim 513e05df3b1SJaegeuk Kim parent = npage[0]; 51452c2db3fSChangman Lee if (level != 0) 515e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 516e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 517e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 518e05df3b1SJaegeuk Kim 519e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 520e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 521e05df3b1SJaegeuk Kim bool done = false; 522e05df3b1SJaegeuk Kim 523266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 524e05df3b1SJaegeuk Kim /* alloc new node */ 525e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 526e05df3b1SJaegeuk Kim err = -ENOSPC; 527e05df3b1SJaegeuk Kim goto release_pages; 528e05df3b1SJaegeuk Kim } 529e05df3b1SJaegeuk Kim 530e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5318ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 532e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 533e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 534e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 535e05df3b1SJaegeuk Kim goto release_pages; 536e05df3b1SJaegeuk Kim } 537e05df3b1SJaegeuk Kim 538e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 539e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 540e05df3b1SJaegeuk Kim done = true; 541266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 542e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 543e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 544e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 545e05df3b1SJaegeuk Kim goto release_pages; 546e05df3b1SJaegeuk Kim } 547e05df3b1SJaegeuk Kim done = true; 548e05df3b1SJaegeuk Kim } 549e05df3b1SJaegeuk Kim if (i == 1) { 550e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 551e05df3b1SJaegeuk Kim unlock_page(parent); 552e05df3b1SJaegeuk Kim } else { 553e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 554e05df3b1SJaegeuk Kim } 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim if (!done) { 557e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 558e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 559e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 560e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 561e05df3b1SJaegeuk Kim goto release_out; 562e05df3b1SJaegeuk Kim } 563e05df3b1SJaegeuk Kim } 564e05df3b1SJaegeuk Kim if (i < level) { 565e05df3b1SJaegeuk Kim parent = npage[i]; 566e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 567e05df3b1SJaegeuk Kim } 568e05df3b1SJaegeuk Kim } 569e05df3b1SJaegeuk Kim dn->nid = nids[level]; 570e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 571e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 572e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 573e05df3b1SJaegeuk Kim return 0; 574e05df3b1SJaegeuk Kim 575e05df3b1SJaegeuk Kim release_pages: 576e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 577e05df3b1SJaegeuk Kim if (i > 1) 578e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 579e05df3b1SJaegeuk Kim release_out: 580e05df3b1SJaegeuk Kim dn->inode_page = NULL; 581e05df3b1SJaegeuk Kim dn->node_page = NULL; 582e05df3b1SJaegeuk Kim return err; 583e05df3b1SJaegeuk Kim } 584e05df3b1SJaegeuk Kim 585e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 586e05df3b1SJaegeuk Kim { 5874081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 588e05df3b1SJaegeuk Kim struct node_info ni; 589e05df3b1SJaegeuk Kim 590e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 59171e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 5929850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 59371e9fec5SJaegeuk Kim goto invalidate; 59471e9fec5SJaegeuk Kim } 5959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 596e05df3b1SJaegeuk Kim 597e05df3b1SJaegeuk Kim /* Deallocate node address */ 59871e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 599ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 600479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 601e05df3b1SJaegeuk Kim 602e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 603e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 604e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 605e05df3b1SJaegeuk Kim } else { 606e05df3b1SJaegeuk Kim sync_inode_page(dn); 607e05df3b1SJaegeuk Kim } 60871e9fec5SJaegeuk Kim invalidate: 609e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 610caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 611e05df3b1SJaegeuk Kim 612e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 613bf39c00aSJaegeuk Kim 614bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 615bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 616bf39c00aSJaegeuk Kim 617e05df3b1SJaegeuk Kim dn->node_page = NULL; 61851dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 619e05df3b1SJaegeuk Kim } 620e05df3b1SJaegeuk Kim 621e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 622e05df3b1SJaegeuk Kim { 623e05df3b1SJaegeuk Kim struct page *page; 624e05df3b1SJaegeuk Kim 625e05df3b1SJaegeuk Kim if (dn->nid == 0) 626e05df3b1SJaegeuk Kim return 1; 627e05df3b1SJaegeuk Kim 628e05df3b1SJaegeuk Kim /* get direct node */ 6294081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 630e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 631e05df3b1SJaegeuk Kim return 1; 632e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 633e05df3b1SJaegeuk Kim return PTR_ERR(page); 634e05df3b1SJaegeuk Kim 635e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 636e05df3b1SJaegeuk Kim dn->node_page = page; 637e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 638e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 639e05df3b1SJaegeuk Kim truncate_node(dn); 640e05df3b1SJaegeuk Kim return 1; 641e05df3b1SJaegeuk Kim } 642e05df3b1SJaegeuk Kim 643e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 644e05df3b1SJaegeuk Kim int ofs, int depth) 645e05df3b1SJaegeuk Kim { 646e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 647e05df3b1SJaegeuk Kim struct page *page; 648e05df3b1SJaegeuk Kim struct f2fs_node *rn; 649e05df3b1SJaegeuk Kim nid_t child_nid; 650e05df3b1SJaegeuk Kim unsigned int child_nofs; 651e05df3b1SJaegeuk Kim int freed = 0; 652e05df3b1SJaegeuk Kim int i, ret; 653e05df3b1SJaegeuk Kim 654e05df3b1SJaegeuk Kim if (dn->nid == 0) 655e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 656e05df3b1SJaegeuk Kim 65751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 65851dd6249SNamjae Jeon 6594081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 66051dd6249SNamjae Jeon if (IS_ERR(page)) { 66151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 662e05df3b1SJaegeuk Kim return PTR_ERR(page); 66351dd6249SNamjae Jeon } 664e05df3b1SJaegeuk Kim 66545590710SGu Zheng rn = F2FS_NODE(page); 666e05df3b1SJaegeuk Kim if (depth < 3) { 667e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 668e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 669e05df3b1SJaegeuk Kim if (child_nid == 0) 670e05df3b1SJaegeuk Kim continue; 671e05df3b1SJaegeuk Kim rdn.nid = child_nid; 672e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 673e05df3b1SJaegeuk Kim if (ret < 0) 674e05df3b1SJaegeuk Kim goto out_err; 675e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 676e05df3b1SJaegeuk Kim } 677e05df3b1SJaegeuk Kim } else { 678e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 679e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 680e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 681e05df3b1SJaegeuk Kim if (child_nid == 0) { 682e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 683e05df3b1SJaegeuk Kim continue; 684e05df3b1SJaegeuk Kim } 685e05df3b1SJaegeuk Kim rdn.nid = child_nid; 686e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 687e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 688e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 689e05df3b1SJaegeuk Kim child_nofs += ret; 690e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 691e05df3b1SJaegeuk Kim goto out_err; 692e05df3b1SJaegeuk Kim } 693e05df3b1SJaegeuk Kim } 694e05df3b1SJaegeuk Kim freed = child_nofs; 695e05df3b1SJaegeuk Kim } 696e05df3b1SJaegeuk Kim 697e05df3b1SJaegeuk Kim if (!ofs) { 698e05df3b1SJaegeuk Kim /* remove current indirect node */ 699e05df3b1SJaegeuk Kim dn->node_page = page; 700e05df3b1SJaegeuk Kim truncate_node(dn); 701e05df3b1SJaegeuk Kim freed++; 702e05df3b1SJaegeuk Kim } else { 703e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 704e05df3b1SJaegeuk Kim } 70551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 706e05df3b1SJaegeuk Kim return freed; 707e05df3b1SJaegeuk Kim 708e05df3b1SJaegeuk Kim out_err: 709e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 71051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 711e05df3b1SJaegeuk Kim return ret; 712e05df3b1SJaegeuk Kim } 713e05df3b1SJaegeuk Kim 714e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 715e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 716e05df3b1SJaegeuk Kim { 717e05df3b1SJaegeuk Kim struct page *pages[2]; 718e05df3b1SJaegeuk Kim nid_t nid[3]; 719e05df3b1SJaegeuk Kim nid_t child_nid; 720e05df3b1SJaegeuk Kim int err = 0; 721e05df3b1SJaegeuk Kim int i; 722e05df3b1SJaegeuk Kim int idx = depth - 2; 723e05df3b1SJaegeuk Kim 724e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 725e05df3b1SJaegeuk Kim if (!nid[0]) 726e05df3b1SJaegeuk Kim return 0; 727e05df3b1SJaegeuk Kim 728e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 729a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 730e1c42045Sarter97 /* reference count'll be increased */ 7314081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 732e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 733e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 734a225dca3Sshifei10.ge idx = i - 1; 735e05df3b1SJaegeuk Kim goto fail; 736e05df3b1SJaegeuk Kim } 737e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 738e05df3b1SJaegeuk Kim } 739e05df3b1SJaegeuk Kim 740e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 741a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 742e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 743e05df3b1SJaegeuk Kim if (!child_nid) 744e05df3b1SJaegeuk Kim continue; 745e05df3b1SJaegeuk Kim dn->nid = child_nid; 746e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 747e05df3b1SJaegeuk Kim if (err < 0) 748e05df3b1SJaegeuk Kim goto fail; 749e05df3b1SJaegeuk Kim set_nid(pages[idx], i, 0, false); 750e05df3b1SJaegeuk Kim } 751e05df3b1SJaegeuk Kim 752a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 753e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 754e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 755e05df3b1SJaegeuk Kim truncate_node(dn); 756e05df3b1SJaegeuk Kim } else { 757e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 758e05df3b1SJaegeuk Kim } 759e05df3b1SJaegeuk Kim offset[idx]++; 760a225dca3Sshifei10.ge offset[idx + 1] = 0; 761a225dca3Sshifei10.ge idx--; 762e05df3b1SJaegeuk Kim fail: 763a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 764e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 76551dd6249SNamjae Jeon 76651dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 76751dd6249SNamjae Jeon 768e05df3b1SJaegeuk Kim return err; 769e05df3b1SJaegeuk Kim } 770e05df3b1SJaegeuk Kim 7710a8165d7SJaegeuk Kim /* 772e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 773e05df3b1SJaegeuk Kim */ 774e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 775e05df3b1SJaegeuk Kim { 7764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 777e05df3b1SJaegeuk Kim int err = 0, cont = 1; 778e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 7797dd690c8SJaegeuk Kim unsigned int nofs = 0; 78058bfaf44SJaegeuk Kim struct f2fs_inode *ri; 781e05df3b1SJaegeuk Kim struct dnode_of_data dn; 782e05df3b1SJaegeuk Kim struct page *page; 783e05df3b1SJaegeuk Kim 78451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 78551dd6249SNamjae Jeon 786de93653fSJaegeuk Kim level = get_node_path(F2FS_I(inode), from, offset, noffset); 787afcb7ca0SJaegeuk Kim restart: 788e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 78951dd6249SNamjae Jeon if (IS_ERR(page)) { 79051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 791e05df3b1SJaegeuk Kim return PTR_ERR(page); 79251dd6249SNamjae Jeon } 793e05df3b1SJaegeuk Kim 794e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 795e05df3b1SJaegeuk Kim unlock_page(page); 796e05df3b1SJaegeuk Kim 79758bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 798e05df3b1SJaegeuk Kim switch (level) { 799e05df3b1SJaegeuk Kim case 0: 800e05df3b1SJaegeuk Kim case 1: 801e05df3b1SJaegeuk Kim nofs = noffset[1]; 802e05df3b1SJaegeuk Kim break; 803e05df3b1SJaegeuk Kim case 2: 804e05df3b1SJaegeuk Kim nofs = noffset[1]; 805e05df3b1SJaegeuk Kim if (!offset[level - 1]) 806e05df3b1SJaegeuk Kim goto skip_partial; 80758bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 808e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 809e05df3b1SJaegeuk Kim goto fail; 810e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 811e05df3b1SJaegeuk Kim break; 812e05df3b1SJaegeuk Kim case 3: 813e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 814e05df3b1SJaegeuk Kim if (!offset[level - 1]) 815e05df3b1SJaegeuk Kim goto skip_partial; 81658bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 817e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 818e05df3b1SJaegeuk Kim goto fail; 819e05df3b1SJaegeuk Kim break; 820e05df3b1SJaegeuk Kim default: 821e05df3b1SJaegeuk Kim BUG(); 822e05df3b1SJaegeuk Kim } 823e05df3b1SJaegeuk Kim 824e05df3b1SJaegeuk Kim skip_partial: 825e05df3b1SJaegeuk Kim while (cont) { 82658bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 827e05df3b1SJaegeuk Kim switch (offset[0]) { 828e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 829e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 830e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 831e05df3b1SJaegeuk Kim break; 832e05df3b1SJaegeuk Kim 833e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 834e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 835e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 836e05df3b1SJaegeuk Kim break; 837e05df3b1SJaegeuk Kim 838e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 839e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 840e05df3b1SJaegeuk Kim cont = 0; 841e05df3b1SJaegeuk Kim break; 842e05df3b1SJaegeuk Kim 843e05df3b1SJaegeuk Kim default: 844e05df3b1SJaegeuk Kim BUG(); 845e05df3b1SJaegeuk Kim } 846e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 847e05df3b1SJaegeuk Kim goto fail; 848e05df3b1SJaegeuk Kim if (offset[1] == 0 && 84958bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 850e05df3b1SJaegeuk Kim lock_page(page); 8514ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 852afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 853afcb7ca0SJaegeuk Kim goto restart; 854afcb7ca0SJaegeuk Kim } 8553cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 85658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 857e05df3b1SJaegeuk Kim set_page_dirty(page); 858e05df3b1SJaegeuk Kim unlock_page(page); 859e05df3b1SJaegeuk Kim } 860e05df3b1SJaegeuk Kim offset[1] = 0; 861e05df3b1SJaegeuk Kim offset[0]++; 862e05df3b1SJaegeuk Kim nofs += err; 863e05df3b1SJaegeuk Kim } 864e05df3b1SJaegeuk Kim fail: 865e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 86651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 867e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 868e05df3b1SJaegeuk Kim } 869e05df3b1SJaegeuk Kim 8704f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 8714f16fb0fSJaegeuk Kim { 8724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 8734f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 8744f16fb0fSJaegeuk Kim struct dnode_of_data dn; 8754f16fb0fSJaegeuk Kim struct page *npage; 8764f16fb0fSJaegeuk Kim 8774f16fb0fSJaegeuk Kim if (!nid) 8784f16fb0fSJaegeuk Kim return 0; 8794f16fb0fSJaegeuk Kim 8804f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 8814f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 8824f16fb0fSJaegeuk Kim return PTR_ERR(npage); 8834f16fb0fSJaegeuk Kim 8844f16fb0fSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = 0; 88565985d93SJaegeuk Kim 88665985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 88765985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 88865985d93SJaegeuk Kim 8894f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 8904f16fb0fSJaegeuk Kim 8914f16fb0fSJaegeuk Kim if (page) 89201d2d1aaSChao Yu dn.inode_page_locked = true; 8934f16fb0fSJaegeuk Kim truncate_node(&dn); 8944f16fb0fSJaegeuk Kim return 0; 8954f16fb0fSJaegeuk Kim } 8964f16fb0fSJaegeuk Kim 89739936837SJaegeuk Kim /* 8984f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 8994f4124d0SChao Yu * f2fs_unlock_op(). 90039936837SJaegeuk Kim */ 90158e674d6SGu Zheng void remove_inode_page(struct inode *inode) 902e05df3b1SJaegeuk Kim { 903e05df3b1SJaegeuk Kim struct dnode_of_data dn; 904e05df3b1SJaegeuk Kim 905c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 906c2e69583SJaegeuk Kim if (get_dnode_of_data(&dn, 0, LOOKUP_NODE)) 90758e674d6SGu Zheng return; 908e05df3b1SJaegeuk Kim 909c2e69583SJaegeuk Kim if (truncate_xattr_node(inode, dn.inode_page)) { 910c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 91158e674d6SGu Zheng return; 912e05df3b1SJaegeuk Kim } 913c2e69583SJaegeuk Kim 914c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 915c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 916c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 917c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 918c2e69583SJaegeuk Kim 919e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9209850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9219850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 922c2e69583SJaegeuk Kim 923c2e69583SJaegeuk Kim /* will put inode & node pages */ 924e05df3b1SJaegeuk Kim truncate_node(&dn); 925e05df3b1SJaegeuk Kim } 926e05df3b1SJaegeuk Kim 927a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 928e05df3b1SJaegeuk Kim { 929e05df3b1SJaegeuk Kim struct dnode_of_data dn; 930e05df3b1SJaegeuk Kim 931e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 932e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 93344a83ff6SJaegeuk Kim 93444a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 9358ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 936e05df3b1SJaegeuk Kim } 937e05df3b1SJaegeuk Kim 9388ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 9398ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 940e05df3b1SJaegeuk Kim { 9414081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 942e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 943e05df3b1SJaegeuk Kim struct page *page; 944e05df3b1SJaegeuk Kim int err; 945e05df3b1SJaegeuk Kim 9466bacf52fSJaegeuk Kim if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) 947e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 948e05df3b1SJaegeuk Kim 94954b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), dn->nid); 950e05df3b1SJaegeuk Kim if (!page) 951e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 952e05df3b1SJaegeuk Kim 9536bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 9549c02740cSJaegeuk Kim err = -ENOSPC; 9559c02740cSJaegeuk Kim goto fail; 9569c02740cSJaegeuk Kim } 957e05df3b1SJaegeuk Kim 9589c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 959e05df3b1SJaegeuk Kim 960e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 9619850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 962e05df3b1SJaegeuk Kim new_ni = old_ni; 963e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 964479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 9659c02740cSJaegeuk Kim 96654b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 9679c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 968398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 9699c02740cSJaegeuk Kim SetPageUptodate(page); 9709c02740cSJaegeuk Kim set_page_dirty(page); 971e05df3b1SJaegeuk Kim 9724bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 973479bd73aSJaegeuk Kim F2FS_I(dn->inode)->i_xattr_nid = dn->nid; 974479bd73aSJaegeuk Kim 975e05df3b1SJaegeuk Kim dn->node_page = page; 9768ae8f162SJaegeuk Kim if (ipage) 9778ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 9788ae8f162SJaegeuk Kim else 979e05df3b1SJaegeuk Kim sync_inode_page(dn); 980e05df3b1SJaegeuk Kim if (ofs == 0) 981e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 982e05df3b1SJaegeuk Kim 983e05df3b1SJaegeuk Kim return page; 984e05df3b1SJaegeuk Kim 985e05df3b1SJaegeuk Kim fail: 98671e9fec5SJaegeuk Kim clear_node_page_dirty(page); 987e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 988e05df3b1SJaegeuk Kim return ERR_PTR(err); 989e05df3b1SJaegeuk Kim } 990e05df3b1SJaegeuk Kim 99156ae674cSJaegeuk Kim /* 99256ae674cSJaegeuk Kim * Caller should do after getting the following values. 99356ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 99486531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 99556ae674cSJaegeuk Kim */ 99693dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 997e05df3b1SJaegeuk Kim { 9984081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 999e05df3b1SJaegeuk Kim struct node_info ni; 1000cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 100105ca3632SJaegeuk Kim .sbi = sbi, 1002cf04e8ebSJaegeuk Kim .type = NODE, 1003cf04e8ebSJaegeuk Kim .rw = rw, 100405ca3632SJaegeuk Kim .page = page, 10054375a336SJaegeuk Kim .encrypted_page = NULL, 1006cf04e8ebSJaegeuk Kim }; 1007e05df3b1SJaegeuk Kim 1008e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1009e05df3b1SJaegeuk Kim 10106bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10112bca1e23SJaegeuk Kim ClearPageUptodate(page); 1012e05df3b1SJaegeuk Kim return -ENOENT; 1013393ff91fSJaegeuk Kim } 1014393ff91fSJaegeuk Kim 101556ae674cSJaegeuk Kim if (PageUptodate(page)) 101656ae674cSJaegeuk Kim return LOCKED_PAGE; 1017393ff91fSJaegeuk Kim 1018cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 101905ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1020e05df3b1SJaegeuk Kim } 1021e05df3b1SJaegeuk Kim 10220a8165d7SJaegeuk Kim /* 1023e05df3b1SJaegeuk Kim * Readahead a node page 1024e05df3b1SJaegeuk Kim */ 1025e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1026e05df3b1SJaegeuk Kim { 1027e05df3b1SJaegeuk Kim struct page *apage; 102856ae674cSJaegeuk Kim int err; 1029e05df3b1SJaegeuk Kim 10304ef51a8fSJaegeuk Kim apage = find_get_page(NODE_MAPPING(sbi), nid); 1031393ff91fSJaegeuk Kim if (apage && PageUptodate(apage)) { 1032393ff91fSJaegeuk Kim f2fs_put_page(apage, 0); 1033393ff91fSJaegeuk Kim return; 1034393ff91fSJaegeuk Kim } 1035e05df3b1SJaegeuk Kim f2fs_put_page(apage, 0); 1036e05df3b1SJaegeuk Kim 10374ef51a8fSJaegeuk Kim apage = grab_cache_page(NODE_MAPPING(sbi), nid); 1038e05df3b1SJaegeuk Kim if (!apage) 1039e05df3b1SJaegeuk Kim return; 1040e05df3b1SJaegeuk Kim 104156ae674cSJaegeuk Kim err = read_node_page(apage, READA); 104286531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1043e05df3b1SJaegeuk Kim } 1044e05df3b1SJaegeuk Kim 1045e05df3b1SJaegeuk Kim struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 1046e05df3b1SJaegeuk Kim { 104756ae674cSJaegeuk Kim struct page *page; 104856ae674cSJaegeuk Kim int err; 1049afcb7ca0SJaegeuk Kim repeat: 105054b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1051e05df3b1SJaegeuk Kim if (!page) 1052e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1053e05df3b1SJaegeuk Kim 1054e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 105586531d6bSJaegeuk Kim if (err < 0) { 105686531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1057e05df3b1SJaegeuk Kim return ERR_PTR(err); 105886531d6bSJaegeuk Kim } else if (err != LOCKED_PAGE) { 1059393ff91fSJaegeuk Kim lock_page(page); 106086531d6bSJaegeuk Kim } 1061aaf96075SJaegeuk Kim 10623bb5e2c8SJaegeuk Kim if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) { 1063aaf96075SJaegeuk Kim ClearPageUptodate(page); 1064393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1065393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1066393ff91fSJaegeuk Kim } 10674ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1068afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1069afcb7ca0SJaegeuk Kim goto repeat; 1070afcb7ca0SJaegeuk Kim } 1071e05df3b1SJaegeuk Kim return page; 1072e05df3b1SJaegeuk Kim } 1073e05df3b1SJaegeuk Kim 10740a8165d7SJaegeuk Kim /* 1075e05df3b1SJaegeuk Kim * Return a locked page for the desired node page. 1076e05df3b1SJaegeuk Kim * And, readahead MAX_RA_NODE number of node pages. 1077e05df3b1SJaegeuk Kim */ 1078e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1079e05df3b1SJaegeuk Kim { 10804081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 1081c718379bSJaegeuk Kim struct blk_plug plug; 1082e05df3b1SJaegeuk Kim struct page *page; 108356ae674cSJaegeuk Kim int err, i, end; 108456ae674cSJaegeuk Kim nid_t nid; 1085e05df3b1SJaegeuk Kim 1086e05df3b1SJaegeuk Kim /* First, try getting the desired direct node. */ 1087e05df3b1SJaegeuk Kim nid = get_nid(parent, start, false); 1088e05df3b1SJaegeuk Kim if (!nid) 1089e05df3b1SJaegeuk Kim return ERR_PTR(-ENOENT); 1090afcb7ca0SJaegeuk Kim repeat: 10914ef51a8fSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1092e05df3b1SJaegeuk Kim if (!page) 1093e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1094e05df3b1SJaegeuk Kim 109566d36a29SJaegeuk Kim err = read_node_page(page, READ_SYNC); 109686531d6bSJaegeuk Kim if (err < 0) { 109786531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1098e05df3b1SJaegeuk Kim return ERR_PTR(err); 109986531d6bSJaegeuk Kim } else if (err == LOCKED_PAGE) { 110056ae674cSJaegeuk Kim goto page_hit; 110186531d6bSJaegeuk Kim } 1102e05df3b1SJaegeuk Kim 1103c718379bSJaegeuk Kim blk_start_plug(&plug); 1104c718379bSJaegeuk Kim 1105e05df3b1SJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 1106e05df3b1SJaegeuk Kim end = start + MAX_RA_NODE; 1107e05df3b1SJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 1108e05df3b1SJaegeuk Kim for (i = start + 1; i < end; i++) { 1109e05df3b1SJaegeuk Kim nid = get_nid(parent, i, false); 1110e05df3b1SJaegeuk Kim if (!nid) 1111e05df3b1SJaegeuk Kim continue; 1112e05df3b1SJaegeuk Kim ra_node_page(sbi, nid); 1113e05df3b1SJaegeuk Kim } 1114e05df3b1SJaegeuk Kim 1115c718379bSJaegeuk Kim blk_finish_plug(&plug); 1116c718379bSJaegeuk Kim 1117e05df3b1SJaegeuk Kim lock_page(page); 11184ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1119afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1120afcb7ca0SJaegeuk Kim goto repeat; 1121afcb7ca0SJaegeuk Kim } 1122e0f56cb4SNamjae Jeon page_hit: 11236bacf52fSJaegeuk Kim if (unlikely(!PageUptodate(page))) { 1124e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1125e05df3b1SJaegeuk Kim return ERR_PTR(-EIO); 1126e05df3b1SJaegeuk Kim } 1127e05df3b1SJaegeuk Kim return page; 1128e05df3b1SJaegeuk Kim } 1129e05df3b1SJaegeuk Kim 1130e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1131e05df3b1SJaegeuk Kim { 1132e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 1133e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->node_page); 1134e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1135e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1136e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 1137e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->inode_page); 1138e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1139e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1140e05df3b1SJaegeuk Kim } else { 114139936837SJaegeuk Kim update_inode_page(dn->inode); 1142e05df3b1SJaegeuk Kim } 1143e05df3b1SJaegeuk Kim } 1144e05df3b1SJaegeuk Kim 1145e05df3b1SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1146e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1147e05df3b1SJaegeuk Kim { 1148e05df3b1SJaegeuk Kim pgoff_t index, end; 1149e05df3b1SJaegeuk Kim struct pagevec pvec; 1150e05df3b1SJaegeuk Kim int step = ino ? 2 : 0; 1151e05df3b1SJaegeuk Kim int nwritten = 0, wrote = 0; 1152e05df3b1SJaegeuk Kim 1153e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1154e05df3b1SJaegeuk Kim 1155e05df3b1SJaegeuk Kim next_step: 1156e05df3b1SJaegeuk Kim index = 0; 1157e05df3b1SJaegeuk Kim end = LONG_MAX; 1158e05df3b1SJaegeuk Kim 1159e05df3b1SJaegeuk Kim while (index <= end) { 1160e05df3b1SJaegeuk Kim int i, nr_pages; 11614ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1162e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1163e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1164e05df3b1SJaegeuk Kim if (nr_pages == 0) 1165e05df3b1SJaegeuk Kim break; 1166e05df3b1SJaegeuk Kim 1167e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1168e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1169e05df3b1SJaegeuk Kim 1170e05df3b1SJaegeuk Kim /* 1171e05df3b1SJaegeuk Kim * flushing sequence with step: 1172e05df3b1SJaegeuk Kim * 0. indirect nodes 1173e05df3b1SJaegeuk Kim * 1. dentry dnodes 1174e05df3b1SJaegeuk Kim * 2. file dnodes 1175e05df3b1SJaegeuk Kim */ 1176e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1177e05df3b1SJaegeuk Kim continue; 1178e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1179e05df3b1SJaegeuk Kim is_cold_node(page))) 1180e05df3b1SJaegeuk Kim continue; 1181e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1182e05df3b1SJaegeuk Kim !is_cold_node(page))) 1183e05df3b1SJaegeuk Kim continue; 1184e05df3b1SJaegeuk Kim 1185e05df3b1SJaegeuk Kim /* 1186e05df3b1SJaegeuk Kim * If an fsync mode, 1187e05df3b1SJaegeuk Kim * we should not skip writing node pages. 1188e05df3b1SJaegeuk Kim */ 1189e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) == ino) 1190e05df3b1SJaegeuk Kim lock_page(page); 1191e05df3b1SJaegeuk Kim else if (!trylock_page(page)) 1192e05df3b1SJaegeuk Kim continue; 1193e05df3b1SJaegeuk Kim 11944ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1195e05df3b1SJaegeuk Kim continue_unlock: 1196e05df3b1SJaegeuk Kim unlock_page(page); 1197e05df3b1SJaegeuk Kim continue; 1198e05df3b1SJaegeuk Kim } 1199e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) != ino) 1200e05df3b1SJaegeuk Kim goto continue_unlock; 1201e05df3b1SJaegeuk Kim 1202e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1203e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1204e05df3b1SJaegeuk Kim goto continue_unlock; 1205e05df3b1SJaegeuk Kim } 1206e05df3b1SJaegeuk Kim 1207e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1208e05df3b1SJaegeuk Kim goto continue_unlock; 1209e05df3b1SJaegeuk Kim 1210e05df3b1SJaegeuk Kim /* called by fsync() */ 1211e05df3b1SJaegeuk Kim if (ino && IS_DNODE(page)) { 1212e05df3b1SJaegeuk Kim set_fsync_mark(page, 1); 12132dcf51abSJaegeuk Kim if (IS_INODE(page)) 12142dcf51abSJaegeuk Kim set_dentry_mark(page, 12152dcf51abSJaegeuk Kim need_dentry_mark(sbi, ino)); 1216e05df3b1SJaegeuk Kim nwritten++; 1217e05df3b1SJaegeuk Kim } else { 1218e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1219e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 1220e05df3b1SJaegeuk Kim } 122152746519SJaegeuk Kim 122252746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 122352746519SJaegeuk Kim unlock_page(page); 122452746519SJaegeuk Kim else 1225e05df3b1SJaegeuk Kim wrote++; 1226e05df3b1SJaegeuk Kim 1227e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1228e05df3b1SJaegeuk Kim break; 1229e05df3b1SJaegeuk Kim } 1230e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1231e05df3b1SJaegeuk Kim cond_resched(); 1232e05df3b1SJaegeuk Kim 1233e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1234e05df3b1SJaegeuk Kim step = 2; 1235e05df3b1SJaegeuk Kim break; 1236e05df3b1SJaegeuk Kim } 1237e05df3b1SJaegeuk Kim } 1238e05df3b1SJaegeuk Kim 1239e05df3b1SJaegeuk Kim if (step < 2) { 1240e05df3b1SJaegeuk Kim step++; 1241e05df3b1SJaegeuk Kim goto next_step; 1242e05df3b1SJaegeuk Kim } 1243e05df3b1SJaegeuk Kim 1244e05df3b1SJaegeuk Kim if (wrote) 1245458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 1246e05df3b1SJaegeuk Kim return nwritten; 1247e05df3b1SJaegeuk Kim } 1248e05df3b1SJaegeuk Kim 1249cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1250cfe58f9dSJaegeuk Kim { 1251cfe58f9dSJaegeuk Kim pgoff_t index = 0, end = LONG_MAX; 1252cfe58f9dSJaegeuk Kim struct pagevec pvec; 1253cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1254cfe58f9dSJaegeuk Kim 1255cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 12564ef51a8fSJaegeuk Kim 12574ef51a8fSJaegeuk Kim while (index <= end) { 12584ef51a8fSJaegeuk Kim int i, nr_pages; 12594ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1260cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 12614ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 12624ef51a8fSJaegeuk Kim if (nr_pages == 0) 12634ef51a8fSJaegeuk Kim break; 1264cfe58f9dSJaegeuk Kim 1265cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1266cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1267cfe58f9dSJaegeuk Kim 1268cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1269cfb271d4SChao Yu if (unlikely(page->index > end)) 1270cfe58f9dSJaegeuk Kim continue; 1271cfe58f9dSJaegeuk Kim 12724bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 12733cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1274cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1275cfe58f9dSJaegeuk Kim ret = -EIO; 1276cfe58f9dSJaegeuk Kim } 12774bf08ff6SChao Yu } 1278cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1279cfe58f9dSJaegeuk Kim cond_resched(); 1280cfe58f9dSJaegeuk Kim } 1281cfe58f9dSJaegeuk Kim 12824ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1283cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 12844ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1285cfe58f9dSJaegeuk Kim ret2 = -EIO; 1286cfe58f9dSJaegeuk Kim if (!ret) 1287cfe58f9dSJaegeuk Kim ret = ret2; 1288cfe58f9dSJaegeuk Kim return ret; 1289cfe58f9dSJaegeuk Kim } 1290cfe58f9dSJaegeuk Kim 1291e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1292e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1293e05df3b1SJaegeuk Kim { 12944081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1295e05df3b1SJaegeuk Kim nid_t nid; 1296e05df3b1SJaegeuk Kim struct node_info ni; 1297fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 129805ca3632SJaegeuk Kim .sbi = sbi, 1299fb5566daSJaegeuk Kim .type = NODE, 1300fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 130105ca3632SJaegeuk Kim .page = page, 13024375a336SJaegeuk Kim .encrypted_page = NULL, 1303fb5566daSJaegeuk Kim }; 1304e05df3b1SJaegeuk Kim 1305ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1306ecda0de3SChao Yu 1307caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 130887a9bd26SJaegeuk Kim goto redirty_out; 1309cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1310cf779cabSJaegeuk Kim goto redirty_out; 131187a9bd26SJaegeuk Kim 13123cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1313e05df3b1SJaegeuk Kim 1314e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1315e05df3b1SJaegeuk Kim nid = nid_of_node(page); 13169850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1317e05df3b1SJaegeuk Kim 1318e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1319e05df3b1SJaegeuk Kim 1320e05df3b1SJaegeuk Kim /* This page is already truncated */ 13216bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 13222bca1e23SJaegeuk Kim ClearPageUptodate(page); 132339936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 132439936837SJaegeuk Kim unlock_page(page); 132539936837SJaegeuk Kim return 0; 132639936837SJaegeuk Kim } 1327e05df3b1SJaegeuk Kim 13282f97c326SJaegeuk Kim if (wbc->for_reclaim) { 13292f97c326SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 133087a9bd26SJaegeuk Kim goto redirty_out; 13312f97c326SJaegeuk Kim } else { 1332b3582c68SChao Yu down_read(&sbi->node_write); 13332f97c326SJaegeuk Kim } 1334cf04e8ebSJaegeuk Kim 1335e05df3b1SJaegeuk Kim set_page_writeback(page); 1336cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 133705ca3632SJaegeuk Kim write_node_page(nid, &fio); 1338cf04e8ebSJaegeuk Kim set_node_addr(sbi, &ni, fio.blk_addr, is_fsync_dnode(page)); 1339e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1340b3582c68SChao Yu up_read(&sbi->node_write); 1341e05df3b1SJaegeuk Kim unlock_page(page); 134227c6bd60SJaegeuk Kim 134327c6bd60SJaegeuk Kim if (wbc->for_reclaim) 134427c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 134527c6bd60SJaegeuk Kim 1346e05df3b1SJaegeuk Kim return 0; 134787a9bd26SJaegeuk Kim 134887a9bd26SJaegeuk Kim redirty_out: 134976f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 135087a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1351e05df3b1SJaegeuk Kim } 1352e05df3b1SJaegeuk Kim 1353e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1354e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1355e05df3b1SJaegeuk Kim { 13564081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 135750c8cdb3SJaegeuk Kim long diff; 1358e05df3b1SJaegeuk Kim 1359e5748434SChao Yu trace_f2fs_writepages(mapping->host, wbc, NODE); 1360e5748434SChao Yu 13614660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 13624660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1363e05df3b1SJaegeuk Kim 1364a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 136587d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1366d3baf95dSJaegeuk Kim goto skip_write; 1367a7fdffbdSJaegeuk Kim 136850c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1369fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 1370e05df3b1SJaegeuk Kim sync_node_pages(sbi, 0, wbc); 137150c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1372e05df3b1SJaegeuk Kim return 0; 1373d3baf95dSJaegeuk Kim 1374d3baf95dSJaegeuk Kim skip_write: 1375d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1376d3baf95dSJaegeuk Kim return 0; 1377e05df3b1SJaegeuk Kim } 1378e05df3b1SJaegeuk Kim 1379e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1380e05df3b1SJaegeuk Kim { 138126c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 138226c6b887SJaegeuk Kim 1383e05df3b1SJaegeuk Kim SetPageUptodate(page); 1384e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1385e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 13864081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1387e05df3b1SJaegeuk Kim SetPagePrivate(page); 13889e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1389e05df3b1SJaegeuk Kim return 1; 1390e05df3b1SJaegeuk Kim } 1391e05df3b1SJaegeuk Kim return 0; 1392e05df3b1SJaegeuk Kim } 1393e05df3b1SJaegeuk Kim 13940a8165d7SJaegeuk Kim /* 1395e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1396e05df3b1SJaegeuk Kim */ 1397e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1398e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1399e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1400e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1401487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1402487261f3SChao Yu .releasepage = f2fs_release_page, 1403e05df3b1SJaegeuk Kim }; 1404e05df3b1SJaegeuk Kim 14058a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 14068a7ed66aSJaegeuk Kim nid_t n) 1407e05df3b1SJaegeuk Kim { 14088a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 14093aa770a9SNamjae Jeon } 1410e05df3b1SJaegeuk Kim 14118a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 14128a7ed66aSJaegeuk Kim struct free_nid *i) 1413e05df3b1SJaegeuk Kim { 1414e05df3b1SJaegeuk Kim list_del(&i->list); 14158a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1416e05df3b1SJaegeuk Kim } 1417e05df3b1SJaegeuk Kim 14186fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1419e05df3b1SJaegeuk Kim { 14206fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1421e05df3b1SJaegeuk Kim struct free_nid *i; 142259bbd474SJaegeuk Kim struct nat_entry *ne; 142359bbd474SJaegeuk Kim bool allocated = false; 1424e05df3b1SJaegeuk Kim 14256fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 142623d38844SHaicheng Li return -1; 14279198acebSJaegeuk Kim 14289198acebSJaegeuk Kim /* 0 nid should not be used */ 1429cfb271d4SChao Yu if (unlikely(nid == 0)) 14309198acebSJaegeuk Kim return 0; 143159bbd474SJaegeuk Kim 14327bd59381SGu Zheng if (build) { 143359bbd474SJaegeuk Kim /* do not add allocated nids */ 14348b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 143559bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 14368a7ed66aSJaegeuk Kim if (ne && 14377ef35e3bSJaegeuk Kim (!get_nat_flag(ne, IS_CHECKPOINTED) || 14387ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 143959bbd474SJaegeuk Kim allocated = true; 14408b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 144159bbd474SJaegeuk Kim if (allocated) 144259bbd474SJaegeuk Kim return 0; 1443e05df3b1SJaegeuk Kim } 14447bd59381SGu Zheng 14457bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1446e05df3b1SJaegeuk Kim i->nid = nid; 1447e05df3b1SJaegeuk Kim i->state = NID_NEW; 1448e05df3b1SJaegeuk Kim 1449769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1450769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1451769ec6e5SJaegeuk Kim return 0; 1452769ec6e5SJaegeuk Kim } 1453769ec6e5SJaegeuk Kim 1454e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14558a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1456e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1457769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1458e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1459e05df3b1SJaegeuk Kim return 0; 1460e05df3b1SJaegeuk Kim } 1461e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1462e05df3b1SJaegeuk Kim nm_i->fcnt++; 1463e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1464769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1465e05df3b1SJaegeuk Kim return 1; 1466e05df3b1SJaegeuk Kim } 1467e05df3b1SJaegeuk Kim 1468e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1469e05df3b1SJaegeuk Kim { 1470e05df3b1SJaegeuk Kim struct free_nid *i; 1471cf0ee0f0SChao Yu bool need_free = false; 1472cf0ee0f0SChao Yu 1473e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14748a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1475e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 14768a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1477e05df3b1SJaegeuk Kim nm_i->fcnt--; 1478cf0ee0f0SChao Yu need_free = true; 1479e05df3b1SJaegeuk Kim } 1480e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1481cf0ee0f0SChao Yu 1482cf0ee0f0SChao Yu if (need_free) 1483cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1484e05df3b1SJaegeuk Kim } 1485e05df3b1SJaegeuk Kim 14866fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1487e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1488e05df3b1SJaegeuk Kim { 14896fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1490e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1491e05df3b1SJaegeuk Kim block_t blk_addr; 1492e05df3b1SJaegeuk Kim int i; 1493e05df3b1SJaegeuk Kim 1494e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1495e05df3b1SJaegeuk Kim 1496e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 149723d38844SHaicheng Li 1498cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 149904431c44SJaegeuk Kim break; 150023d38844SHaicheng Li 1501e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 15029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 150323d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 15046fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 150523d38844SHaicheng Li break; 150623d38844SHaicheng Li } 1507e05df3b1SJaegeuk Kim } 1508e05df3b1SJaegeuk Kim } 1509e05df3b1SJaegeuk Kim 1510e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1511e05df3b1SJaegeuk Kim { 1512e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1513e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1514e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 15158760952dSHaicheng Li int i = 0; 151655008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1517e05df3b1SJaegeuk Kim 151855008d84SJaegeuk Kim /* Enough entries */ 151955008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 152055008d84SJaegeuk Kim return; 1521e05df3b1SJaegeuk Kim 152255008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 1523662befdaSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT); 1524e05df3b1SJaegeuk Kim 1525e05df3b1SJaegeuk Kim while (1) { 1526e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1527e05df3b1SJaegeuk Kim 15286fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1529e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1530e05df3b1SJaegeuk Kim 1531e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1532cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1533e05df3b1SJaegeuk Kim nid = 0; 153455008d84SJaegeuk Kim 1535a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1536e05df3b1SJaegeuk Kim break; 1537e05df3b1SJaegeuk Kim } 1538e05df3b1SJaegeuk Kim 153955008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 154055008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1541e05df3b1SJaegeuk Kim 1542e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1543e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1544e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1545e05df3b1SJaegeuk Kim block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr); 1546e05df3b1SJaegeuk Kim nid = le32_to_cpu(nid_in_journal(sum, i)); 1547e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 15486fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1549e05df3b1SJaegeuk Kim else 1550e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1551e05df3b1SJaegeuk Kim } 1552e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1553e05df3b1SJaegeuk Kim } 1554e05df3b1SJaegeuk Kim 1555e05df3b1SJaegeuk Kim /* 1556e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1557e05df3b1SJaegeuk Kim * from second parameter of this function. 1558e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1559e05df3b1SJaegeuk Kim */ 1560e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1561e05df3b1SJaegeuk Kim { 1562e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1563e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1564e05df3b1SJaegeuk Kim retry: 15657ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1566e05df3b1SJaegeuk Kim return false; 1567e05df3b1SJaegeuk Kim 1568e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1569e05df3b1SJaegeuk Kim 157055008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1571f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 15729850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 15732d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1574e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1575e05df3b1SJaegeuk Kim break; 1576e05df3b1SJaegeuk Kim 15779850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1578e05df3b1SJaegeuk Kim *nid = i->nid; 1579e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1580e05df3b1SJaegeuk Kim nm_i->fcnt--; 1581e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1582e05df3b1SJaegeuk Kim return true; 1583e05df3b1SJaegeuk Kim } 158455008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 158555008d84SJaegeuk Kim 158655008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 158755008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 158855008d84SJaegeuk Kim build_free_nids(sbi); 158955008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 159055008d84SJaegeuk Kim goto retry; 159155008d84SJaegeuk Kim } 1592e05df3b1SJaegeuk Kim 15930a8165d7SJaegeuk Kim /* 1594e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1595e05df3b1SJaegeuk Kim */ 1596e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1597e05df3b1SJaegeuk Kim { 1598e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1599e05df3b1SJaegeuk Kim struct free_nid *i; 1600e05df3b1SJaegeuk Kim 1601e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16028a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16039850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16048a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1605e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1606cf0ee0f0SChao Yu 1607cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1608e05df3b1SJaegeuk Kim } 1609e05df3b1SJaegeuk Kim 16100a8165d7SJaegeuk Kim /* 1611e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1612e05df3b1SJaegeuk Kim */ 1613e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1614e05df3b1SJaegeuk Kim { 161549952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 161649952fa1SJaegeuk Kim struct free_nid *i; 1617cf0ee0f0SChao Yu bool need_free = false; 161849952fa1SJaegeuk Kim 161965985d93SJaegeuk Kim if (!nid) 162065985d93SJaegeuk Kim return; 162165985d93SJaegeuk Kim 162249952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16238a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16249850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16256fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 16268a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1627cf0ee0f0SChao Yu need_free = true; 162895630cbaSHaicheng Li } else { 162949952fa1SJaegeuk Kim i->state = NID_NEW; 163049952fa1SJaegeuk Kim nm_i->fcnt++; 163195630cbaSHaicheng Li } 163249952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1633cf0ee0f0SChao Yu 1634cf0ee0f0SChao Yu if (need_free) 1635cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1636e05df3b1SJaegeuk Kim } 1637e05df3b1SJaegeuk Kim 163831696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 163931696580SChao Yu { 164031696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 164131696580SChao Yu struct free_nid *i, *next; 164231696580SChao Yu int nr = nr_shrink; 164331696580SChao Yu 164431696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 164531696580SChao Yu return 0; 164631696580SChao Yu 164731696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 164831696580SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 164931696580SChao Yu if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK) 165031696580SChao Yu break; 165131696580SChao Yu if (i->state == NID_ALLOC) 165231696580SChao Yu continue; 165331696580SChao Yu __del_from_free_nid_list(nm_i, i); 165431696580SChao Yu nm_i->fcnt--; 165531696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 165631696580SChao Yu kmem_cache_free(free_nid_slab, i); 165731696580SChao Yu nr_shrink--; 165831696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 165931696580SChao Yu } 166031696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 166131696580SChao Yu mutex_unlock(&nm_i->build_lock); 166231696580SChao Yu 166331696580SChao Yu return nr - nr_shrink; 166431696580SChao Yu } 166531696580SChao Yu 166670cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 166728cdce04SChao Yu { 166828cdce04SChao Yu void *src_addr, *dst_addr; 166928cdce04SChao Yu size_t inline_size; 167028cdce04SChao Yu struct page *ipage; 167128cdce04SChao Yu struct f2fs_inode *ri; 167228cdce04SChao Yu 16734081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 16749850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 167528cdce04SChao Yu 1676e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1677e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 1678e3b4d43fSJaegeuk Kim clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); 1679e3b4d43fSJaegeuk Kim goto update_inode; 1680e3b4d43fSJaegeuk Kim } 1681e3b4d43fSJaegeuk Kim 168228cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 168328cdce04SChao Yu src_addr = inline_xattr_addr(page); 168428cdce04SChao Yu inline_size = inline_xattr_size(inode); 168528cdce04SChao Yu 168654b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE); 168728cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1688e3b4d43fSJaegeuk Kim update_inode: 168928cdce04SChao Yu update_inode(inode, ipage); 169028cdce04SChao Yu f2fs_put_page(ipage, 1); 169128cdce04SChao Yu } 169228cdce04SChao Yu 16931c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1694abb2366cSJaegeuk Kim { 16954081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1696abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1697abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1698abb2366cSJaegeuk Kim struct node_info ni; 1699abb2366cSJaegeuk Kim 1700abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1701abb2366cSJaegeuk Kim if (!prev_xnid) 1702abb2366cSJaegeuk Kim goto recover_xnid; 1703abb2366cSJaegeuk Kim 1704abb2366cSJaegeuk Kim /* Deallocate node address */ 1705abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 17069850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1707abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1708abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1709479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1710abb2366cSJaegeuk Kim 1711abb2366cSJaegeuk Kim recover_xnid: 1712abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1713abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 17149850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1715abb2366cSJaegeuk Kim 1716abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1717abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1718abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1719479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1720abb2366cSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = new_xnid; 1721abb2366cSJaegeuk Kim 1722abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1723abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1724479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1725abb2366cSJaegeuk Kim 1726abb2366cSJaegeuk Kim update_inode_page(inode); 1727abb2366cSJaegeuk Kim } 1728abb2366cSJaegeuk Kim 1729e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 1730e05df3b1SJaegeuk Kim { 173158bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 1732e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 1733e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1734e05df3b1SJaegeuk Kim struct page *ipage; 1735e05df3b1SJaegeuk Kim 1736e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 1737e8271fa3SJaegeuk Kim 1738e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 1739e8271fa3SJaegeuk Kim return -EINVAL; 1740e8271fa3SJaegeuk Kim 17414ef51a8fSJaegeuk Kim ipage = grab_cache_page(NODE_MAPPING(sbi), ino); 1742e05df3b1SJaegeuk Kim if (!ipage) 1743e05df3b1SJaegeuk Kim return -ENOMEM; 1744e05df3b1SJaegeuk Kim 1745e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 1746e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 1747e05df3b1SJaegeuk Kim 1748e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 1749e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 1750e05df3b1SJaegeuk Kim 175158bfaf44SJaegeuk Kim src = F2FS_INODE(page); 175258bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 1753e05df3b1SJaegeuk Kim 175458bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 175558bfaf44SJaegeuk Kim dst->i_size = 0; 175658bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 175758bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 175858bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 1759617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 1760e05df3b1SJaegeuk Kim 1761e05df3b1SJaegeuk Kim new_ni = old_ni; 1762e05df3b1SJaegeuk Kim new_ni.ino = ino; 1763e05df3b1SJaegeuk Kim 1764cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 176565e5cd0aSJaegeuk Kim WARN_ON(1); 1766479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 1767e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1768617deb8cSJaegeuk Kim set_page_dirty(ipage); 1769e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 1770e05df3b1SJaegeuk Kim return 0; 1771e05df3b1SJaegeuk Kim } 1772e05df3b1SJaegeuk Kim 1773e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 1774e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 1775e05df3b1SJaegeuk Kim { 1776e05df3b1SJaegeuk Kim struct f2fs_node *rn; 1777e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 1778e05df3b1SJaegeuk Kim block_t addr; 177990a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 17809ecf4b80SChao Yu int i, idx, last_offset, nrpages; 1781e05df3b1SJaegeuk Kim 1782e05df3b1SJaegeuk Kim /* scan the node segment */ 1783e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 1784e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 1785e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 1786e05df3b1SJaegeuk Kim 17879ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 17889af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 1789393ff91fSJaegeuk Kim 17909af0ff1cSChao Yu /* readahead node pages */ 17919ecf4b80SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR); 17929af0ff1cSChao Yu 17939ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 17949ecf4b80SChao Yu struct page *page = get_meta_page(sbi, idx); 1795393ff91fSJaegeuk Kim 17969ecf4b80SChao Yu rn = F2FS_NODE(page); 1797393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 1798393ff91fSJaegeuk Kim sum_entry->version = 0; 1799393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 18009af0ff1cSChao Yu sum_entry++; 18019ecf4b80SChao Yu f2fs_put_page(page, 1); 18029af0ff1cSChao Yu } 1803bac4eef6SChao Yu 18049ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 1805bac4eef6SChao Yu addr + nrpages); 18069af0ff1cSChao Yu } 18079ecf4b80SChao Yu return 0; 1808e05df3b1SJaegeuk Kim } 1809e05df3b1SJaegeuk Kim 1810aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 1811e05df3b1SJaegeuk Kim { 1812e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1813e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1814e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1815e05df3b1SJaegeuk Kim int i; 1816e05df3b1SJaegeuk Kim 1817e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1818e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1819e05df3b1SJaegeuk Kim struct nat_entry *ne; 1820e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 1821e05df3b1SJaegeuk Kim nid_t nid = le32_to_cpu(nid_in_journal(sum, i)); 1822e05df3b1SJaegeuk Kim 1823e05df3b1SJaegeuk Kim raw_ne = nat_in_journal(sum, i); 18249be32d72SJaegeuk Kim 18258b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 1826e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1827e05df3b1SJaegeuk Kim if (!ne) { 18289be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 182994dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 18309be32d72SJaegeuk Kim } 1831e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 18328b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 1833e05df3b1SJaegeuk Kim } 1834e05df3b1SJaegeuk Kim update_nats_in_cursum(sum, -i); 1835e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1836e05df3b1SJaegeuk Kim } 1837e05df3b1SJaegeuk Kim 1838309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 1839309cc2b6SJaegeuk Kim struct list_head *head, int max) 1840e05df3b1SJaegeuk Kim { 1841309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 1842e05df3b1SJaegeuk Kim 1843309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 1844309cc2b6SJaegeuk Kim goto add_out; 1845e05df3b1SJaegeuk Kim 1846309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 1847309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 1848309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 1849309cc2b6SJaegeuk Kim return; 1850309cc2b6SJaegeuk Kim } 1851309cc2b6SJaegeuk Kim } 1852309cc2b6SJaegeuk Kim add_out: 1853309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 1854aec71382SChao Yu } 1855aec71382SChao Yu 1856309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 1857309cc2b6SJaegeuk Kim struct nat_entry_set *set) 1858309cc2b6SJaegeuk Kim { 1859309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1860309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1861309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 1862309cc2b6SJaegeuk Kim bool to_journal = true; 1863309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 1864309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 1865309cc2b6SJaegeuk Kim struct page *page = NULL; 186657ed1e95SWanpeng Li struct f2fs_nm_info *nm_i = NM_I(sbi); 1867aec71382SChao Yu 1868aec71382SChao Yu /* 1869aec71382SChao Yu * there are two steps to flush nat entries: 1870aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 1871aec71382SChao Yu * #2, flush nat entries to nat page. 1872aec71382SChao Yu */ 1873309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) 1874aec71382SChao Yu to_journal = false; 1875aec71382SChao Yu 1876aec71382SChao Yu if (to_journal) { 1877aec71382SChao Yu mutex_lock(&curseg->curseg_mutex); 1878aec71382SChao Yu } else { 1879e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 1880e05df3b1SJaegeuk Kim nat_blk = page_address(page); 18819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 1882e05df3b1SJaegeuk Kim } 1883e05df3b1SJaegeuk Kim 1884aec71382SChao Yu /* flush dirty nats in nat entry set */ 1885309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 1886aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 1887aec71382SChao Yu nid_t nid = nat_get_nid(ne); 1888aec71382SChao Yu int offset; 1889aec71382SChao Yu 1890309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 1891309cc2b6SJaegeuk Kim continue; 1892309cc2b6SJaegeuk Kim 1893aec71382SChao Yu if (to_journal) { 1894aec71382SChao Yu offset = lookup_journal_in_cursum(sum, 1895aec71382SChao Yu NAT_JOURNAL, nid, 1); 18969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 1897aec71382SChao Yu raw_ne = &nat_in_journal(sum, offset); 1898aec71382SChao Yu nid_in_journal(sum, offset) = cpu_to_le32(nid); 1899aec71382SChao Yu } else { 1900aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 1901aec71382SChao Yu } 1902aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 1903aec71382SChao Yu 19048b26ef98SJaegeuk Kim down_write(&NM_I(sbi)->nat_tree_lock); 190588bd02c9SJaegeuk Kim nat_reset_flag(ne); 1906309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 19078b26ef98SJaegeuk Kim up_write(&NM_I(sbi)->nat_tree_lock); 1908309cc2b6SJaegeuk Kim 1909309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 1910309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 1911e05df3b1SJaegeuk Kim } 1912aec71382SChao Yu 1913aec71382SChao Yu if (to_journal) 1914e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1915aec71382SChao Yu else 1916e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1917aec71382SChao Yu 191880ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 191980ec2e91SChangman Lee 192057ed1e95SWanpeng Li down_write(&nm_i->nat_tree_lock); 1921309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 192257ed1e95SWanpeng Li up_write(&nm_i->nat_tree_lock); 1923309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 1924309cc2b6SJaegeuk Kim } 1925aec71382SChao Yu 1926309cc2b6SJaegeuk Kim /* 1927309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 1928309cc2b6SJaegeuk Kim */ 1929309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 1930309cc2b6SJaegeuk Kim { 1931309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1932309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1933309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 19347aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 1935309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 1936309cc2b6SJaegeuk Kim unsigned int found; 1937309cc2b6SJaegeuk Kim nid_t set_idx = 0; 1938309cc2b6SJaegeuk Kim LIST_HEAD(sets); 1939309cc2b6SJaegeuk Kim 194020d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 194120d047c8SChangman Lee return; 1942309cc2b6SJaegeuk Kim /* 1943309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 1944309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 1945309cc2b6SJaegeuk Kim * into nat entry set. 1946309cc2b6SJaegeuk Kim */ 1947309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 1948309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 1949309cc2b6SJaegeuk Kim 195057ed1e95SWanpeng Li down_write(&nm_i->nat_tree_lock); 1951309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 19527aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 1953309cc2b6SJaegeuk Kim unsigned idx; 1954309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 1955309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 1956309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 1957309cc2b6SJaegeuk Kim MAX_NAT_JENTRIES(sum)); 1958309cc2b6SJaegeuk Kim } 195957ed1e95SWanpeng Li up_write(&nm_i->nat_tree_lock); 1960309cc2b6SJaegeuk Kim 1961309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 1962309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 1963309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 1964309cc2b6SJaegeuk Kim 19659850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 1966e05df3b1SJaegeuk Kim } 1967e05df3b1SJaegeuk Kim 1968e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 1969e05df3b1SJaegeuk Kim { 1970e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 1971e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1972e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 1973e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 1974e05df3b1SJaegeuk Kim 1975e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 1976e05df3b1SJaegeuk Kim 1977e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 1978e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 1979e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 1980b63da15eSJaegeuk Kim 19817ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 19827ee0eeabSJaegeuk Kim 1983b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 1984c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 1985e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 1986e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 1987cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 1988e05df3b1SJaegeuk Kim 19898a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 1990e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 1991769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 1992769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 1993e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 1994e05df3b1SJaegeuk Kim 1995e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 1996e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 19978b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 1998e05df3b1SJaegeuk Kim 1999e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 200079b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2001e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2002e05df3b1SJaegeuk Kim if (!version_bitmap) 2003e05df3b1SJaegeuk Kim return -EFAULT; 2004e05df3b1SJaegeuk Kim 200579b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 200679b5793bSAlexandru Gheorghiu GFP_KERNEL); 200779b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 200879b5793bSAlexandru Gheorghiu return -ENOMEM; 2009e05df3b1SJaegeuk Kim return 0; 2010e05df3b1SJaegeuk Kim } 2011e05df3b1SJaegeuk Kim 2012e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2013e05df3b1SJaegeuk Kim { 2014e05df3b1SJaegeuk Kim int err; 2015e05df3b1SJaegeuk Kim 2016e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2017e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2018e05df3b1SJaegeuk Kim return -ENOMEM; 2019e05df3b1SJaegeuk Kim 2020e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2021e05df3b1SJaegeuk Kim if (err) 2022e05df3b1SJaegeuk Kim return err; 2023e05df3b1SJaegeuk Kim 2024e05df3b1SJaegeuk Kim build_free_nids(sbi); 2025e05df3b1SJaegeuk Kim return 0; 2026e05df3b1SJaegeuk Kim } 2027e05df3b1SJaegeuk Kim 2028e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2029e05df3b1SJaegeuk Kim { 2030e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2031e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2032e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 20337aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2034e05df3b1SJaegeuk Kim nid_t nid = 0; 2035e05df3b1SJaegeuk Kim unsigned int found; 2036e05df3b1SJaegeuk Kim 2037e05df3b1SJaegeuk Kim if (!nm_i) 2038e05df3b1SJaegeuk Kim return; 2039e05df3b1SJaegeuk Kim 2040e05df3b1SJaegeuk Kim /* destroy free nid list */ 2041e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2042e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 20439850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 20448a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2045e05df3b1SJaegeuk Kim nm_i->fcnt--; 2046cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2047cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2048cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2049e05df3b1SJaegeuk Kim } 20509850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2051e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2052e05df3b1SJaegeuk Kim 2053e05df3b1SJaegeuk Kim /* destroy nat cache */ 20548b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2055e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2056e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2057e05df3b1SJaegeuk Kim unsigned idx; 20587aed0d45SJaegeuk Kim 2059b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2060b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2061b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2062e05df3b1SJaegeuk Kim } 20639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 20647aed0d45SJaegeuk Kim 20657aed0d45SJaegeuk Kim /* destroy nat set cache */ 20667aed0d45SJaegeuk Kim nid = 0; 20677aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 20687aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 20697aed0d45SJaegeuk Kim unsigned idx; 20707aed0d45SJaegeuk Kim 20717aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 20727aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 20737aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 20747aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 20757aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 20767aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 20777aed0d45SJaegeuk Kim } 20787aed0d45SJaegeuk Kim } 20798b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2080e05df3b1SJaegeuk Kim 2081e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2082e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2083e05df3b1SJaegeuk Kim kfree(nm_i); 2084e05df3b1SJaegeuk Kim } 2085e05df3b1SJaegeuk Kim 20866e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2087e05df3b1SJaegeuk Kim { 2088e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2089e8512d2eSGu Zheng sizeof(struct nat_entry)); 2090e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2091aec71382SChao Yu goto fail; 2092e05df3b1SJaegeuk Kim 2093e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2094e8512d2eSGu Zheng sizeof(struct free_nid)); 2095aec71382SChao Yu if (!free_nid_slab) 2096ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2097aec71382SChao Yu 2098aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2099aec71382SChao Yu sizeof(struct nat_entry_set)); 2100aec71382SChao Yu if (!nat_entry_set_slab) 2101ce3e6d25SMarkus Elfring goto destroy_free_nid; 2102e05df3b1SJaegeuk Kim return 0; 2103aec71382SChao Yu 2104ce3e6d25SMarkus Elfring destroy_free_nid: 2105aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2106ce3e6d25SMarkus Elfring destroy_nat_entry: 2107aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2108aec71382SChao Yu fail: 2109aec71382SChao Yu return -ENOMEM; 2110e05df3b1SJaegeuk Kim } 2111e05df3b1SJaegeuk Kim 2112e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2113e05df3b1SJaegeuk Kim { 2114aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2115e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2116e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2117e05df3b1SJaegeuk Kim } 2118