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 44e5e7ea3cSJaegeuk Kim /* give 25%, 25%, 50%, 50% memory for each components respectively */ 456fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 46e5e7ea3cSJaegeuk Kim mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 47e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 48e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 496fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 50e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 51e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 52e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 536fb03f3aSJaegeuk Kim } else if (type == DIRTY_DENTS) { 542743f865SJaegeuk Kim if (sbi->sb->s_bdi->dirty_exceeded) 552743f865SJaegeuk Kim return false; 566fb03f3aSJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 57e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 58e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 59e5e7ea3cSJaegeuk Kim int i; 60e5e7ea3cSJaegeuk Kim 61e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6267298804SChao Yu mem_size += (sbi->im[i].ino_num * 6367298804SChao Yu sizeof(struct ino_entry)) >> PAGE_CACHE_SHIFT; 64e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 651e84371fSJaegeuk Kim } else { 661e84371fSJaegeuk Kim if (sbi->sb->s_bdi->dirty_exceeded) 671e84371fSJaegeuk Kim return false; 686fb03f3aSJaegeuk Kim } 696fb03f3aSJaegeuk Kim return res; 70cdfc41c1SJaegeuk Kim } 71cdfc41c1SJaegeuk Kim 72e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 73e05df3b1SJaegeuk Kim { 74e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 75e05df3b1SJaegeuk Kim unsigned int long flags; 76e05df3b1SJaegeuk Kim 77e05df3b1SJaegeuk Kim if (PageDirty(page)) { 78e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 79e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 80e05df3b1SJaegeuk Kim page_index(page), 81e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 82e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 83e05df3b1SJaegeuk Kim 84e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 854081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 86e05df3b1SJaegeuk Kim } 87e05df3b1SJaegeuk Kim ClearPageUptodate(page); 88e05df3b1SJaegeuk Kim } 89e05df3b1SJaegeuk Kim 90e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 91e05df3b1SJaegeuk Kim { 92e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 93e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 94e05df3b1SJaegeuk Kim } 95e05df3b1SJaegeuk Kim 96e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 97e05df3b1SJaegeuk Kim { 98e05df3b1SJaegeuk Kim struct page *src_page; 99e05df3b1SJaegeuk Kim struct page *dst_page; 100e05df3b1SJaegeuk Kim pgoff_t src_off; 101e05df3b1SJaegeuk Kim pgoff_t dst_off; 102e05df3b1SJaegeuk Kim void *src_addr; 103e05df3b1SJaegeuk Kim void *dst_addr; 104e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 105e05df3b1SJaegeuk Kim 106e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 107e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 108e05df3b1SJaegeuk Kim 109e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 110e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 111e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1129850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 113e05df3b1SJaegeuk Kim 114e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 115e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 116e05df3b1SJaegeuk Kim memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); 117e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 118e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 119e05df3b1SJaegeuk Kim 120e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 121e05df3b1SJaegeuk Kim 122e05df3b1SJaegeuk Kim return dst_page; 123e05df3b1SJaegeuk Kim } 124e05df3b1SJaegeuk Kim 125e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 126e05df3b1SJaegeuk Kim { 127e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 128e05df3b1SJaegeuk Kim } 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 131e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 132e05df3b1SJaegeuk Kim { 133e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 134e05df3b1SJaegeuk Kim } 135e05df3b1SJaegeuk Kim 136e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 137e05df3b1SJaegeuk Kim { 138e05df3b1SJaegeuk Kim list_del(&e->list); 139e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 140e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 141e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 142e05df3b1SJaegeuk Kim } 143e05df3b1SJaegeuk Kim 144309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 145309cc2b6SJaegeuk Kim struct nat_entry *ne) 146309cc2b6SJaegeuk Kim { 147309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 148309cc2b6SJaegeuk Kim struct nat_entry_set *head; 149309cc2b6SJaegeuk Kim 150309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 151309cc2b6SJaegeuk Kim return; 1529be32d72SJaegeuk Kim 153309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 154309cc2b6SJaegeuk Kim if (!head) { 155309cc2b6SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_ATOMIC); 156309cc2b6SJaegeuk Kim 157309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 158309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 159309cc2b6SJaegeuk Kim head->set = set; 160309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1619be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 162309cc2b6SJaegeuk Kim } 163309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 164309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 165309cc2b6SJaegeuk Kim head->entry_cnt++; 166309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 167309cc2b6SJaegeuk Kim } 168309cc2b6SJaegeuk Kim 169309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 170309cc2b6SJaegeuk Kim struct nat_entry *ne) 171309cc2b6SJaegeuk Kim { 17220d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 173309cc2b6SJaegeuk Kim struct nat_entry_set *head; 174309cc2b6SJaegeuk Kim 175309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 176309cc2b6SJaegeuk Kim if (head) { 177309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 178309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 179309cc2b6SJaegeuk Kim head->entry_cnt--; 180309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 181309cc2b6SJaegeuk Kim } 182309cc2b6SJaegeuk Kim } 183309cc2b6SJaegeuk Kim 184309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 185309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 186309cc2b6SJaegeuk Kim { 187309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 188309cc2b6SJaegeuk Kim start, nr); 189309cc2b6SJaegeuk Kim } 190309cc2b6SJaegeuk Kim 19188bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 192e05df3b1SJaegeuk Kim { 193e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 194e05df3b1SJaegeuk Kim struct nat_entry *e; 19588bd02c9SJaegeuk Kim bool is_cp = true; 196e05df3b1SJaegeuk Kim 1978b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 198e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 1997ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 20088bd02c9SJaegeuk Kim is_cp = false; 2018b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 202e05df3b1SJaegeuk Kim return is_cp; 203e05df3b1SJaegeuk Kim } 204e05df3b1SJaegeuk Kim 20588bd02c9SJaegeuk Kim bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino) 206479f40c4SJaegeuk Kim { 207479f40c4SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 208479f40c4SJaegeuk Kim struct nat_entry *e; 20988bd02c9SJaegeuk Kim bool fsynced = false; 210479f40c4SJaegeuk Kim 2118b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 21288bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 21388bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_FSYNCED_INODE)) 21488bd02c9SJaegeuk Kim fsynced = true; 2158b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 21688bd02c9SJaegeuk Kim return fsynced; 217479f40c4SJaegeuk Kim } 218479f40c4SJaegeuk Kim 21988bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 220b6fe5873SJaegeuk Kim { 221b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 222b6fe5873SJaegeuk Kim struct nat_entry *e; 22388bd02c9SJaegeuk Kim bool need_update = true; 224b6fe5873SJaegeuk Kim 2258b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 22688bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 22788bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 22888bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 22988bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 23088bd02c9SJaegeuk Kim need_update = false; 2318b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23288bd02c9SJaegeuk Kim return need_update; 233b6fe5873SJaegeuk Kim } 234b6fe5873SJaegeuk Kim 235e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 236e05df3b1SJaegeuk Kim { 237e05df3b1SJaegeuk Kim struct nat_entry *new; 238e05df3b1SJaegeuk Kim 2399be32d72SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_ATOMIC); 2409be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 241e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 242e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 24388bd02c9SJaegeuk Kim nat_reset_flag(new); 244e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 245e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 246e05df3b1SJaegeuk Kim return new; 247e05df3b1SJaegeuk Kim } 248e05df3b1SJaegeuk Kim 249e05df3b1SJaegeuk Kim static void cache_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 250e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 251e05df3b1SJaegeuk Kim { 252e05df3b1SJaegeuk Kim struct nat_entry *e; 2539be32d72SJaegeuk Kim 2548b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 255e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 256e05df3b1SJaegeuk Kim if (!e) { 257e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 25894dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 259e05df3b1SJaegeuk Kim } 2608b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 261e05df3b1SJaegeuk Kim } 262e05df3b1SJaegeuk Kim 263e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 264479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 265e05df3b1SJaegeuk Kim { 266e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 267e05df3b1SJaegeuk Kim struct nat_entry *e; 2689be32d72SJaegeuk Kim 2698b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 270e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 271e05df3b1SJaegeuk Kim if (!e) { 272e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2735c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2749850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 275e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 276e05df3b1SJaegeuk Kim /* 277e05df3b1SJaegeuk Kim * when nid is reallocated, 278e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 279e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 280e05df3b1SJaegeuk Kim */ 2815c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2829850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 283e05df3b1SJaegeuk Kim } 284e05df3b1SJaegeuk Kim 285e05df3b1SJaegeuk Kim /* sanity check */ 2869850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 2879850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 288e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 2899850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 290e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 2919850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 292e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 293e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 294e05df3b1SJaegeuk Kim 295e1c42045Sarter97 /* increment version no as node is removed */ 296e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 297e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 298e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 299e05df3b1SJaegeuk Kim } 300e05df3b1SJaegeuk Kim 301e05df3b1SJaegeuk Kim /* change address */ 302e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 30388bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 30488bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 305e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 306479f40c4SJaegeuk Kim 307479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 308479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 30988bd02c9SJaegeuk Kim if (e) { 31088bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 31188bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 31288bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 31388bd02c9SJaegeuk Kim } 3148b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 315e05df3b1SJaegeuk Kim } 316e05df3b1SJaegeuk Kim 3174660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 318e05df3b1SJaegeuk Kim { 319e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 320e05df3b1SJaegeuk Kim 3216fb03f3aSJaegeuk Kim if (available_free_memory(sbi, NAT_ENTRIES)) 322e05df3b1SJaegeuk Kim return 0; 323e05df3b1SJaegeuk Kim 3248b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 325e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 326e05df3b1SJaegeuk Kim struct nat_entry *ne; 327e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 328e05df3b1SJaegeuk Kim struct nat_entry, list); 329e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 330e05df3b1SJaegeuk Kim nr_shrink--; 331e05df3b1SJaegeuk Kim } 3328b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 333e05df3b1SJaegeuk Kim return nr_shrink; 334e05df3b1SJaegeuk Kim } 335e05df3b1SJaegeuk Kim 3360a8165d7SJaegeuk Kim /* 337e1c42045Sarter97 * This function always returns success 338e05df3b1SJaegeuk Kim */ 339e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 340e05df3b1SJaegeuk Kim { 341e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 342e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 343e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 344e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 345e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 346e05df3b1SJaegeuk Kim struct page *page = NULL; 347e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 348e05df3b1SJaegeuk Kim struct nat_entry *e; 349e05df3b1SJaegeuk Kim int i; 350e05df3b1SJaegeuk Kim 351e05df3b1SJaegeuk Kim ni->nid = nid; 352e05df3b1SJaegeuk Kim 353e05df3b1SJaegeuk Kim /* Check nat cache */ 3548b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 355e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 356e05df3b1SJaegeuk Kim if (e) { 357e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 358e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 359e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 360e05df3b1SJaegeuk Kim } 3618b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 362e05df3b1SJaegeuk Kim if (e) 363e05df3b1SJaegeuk Kim return; 364e05df3b1SJaegeuk Kim 3653547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3663547ea96SJaegeuk Kim 367e05df3b1SJaegeuk Kim /* Check current segment summary */ 368e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 369e05df3b1SJaegeuk Kim i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0); 370e05df3b1SJaegeuk Kim if (i >= 0) { 371e05df3b1SJaegeuk Kim ne = nat_in_journal(sum, i); 372e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 373e05df3b1SJaegeuk Kim } 374e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 375e05df3b1SJaegeuk Kim if (i >= 0) 376e05df3b1SJaegeuk Kim goto cache; 377e05df3b1SJaegeuk Kim 378e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 379e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 380e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 381e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 382e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 383e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 384e05df3b1SJaegeuk Kim cache: 385e05df3b1SJaegeuk Kim /* cache nat entry */ 386e05df3b1SJaegeuk Kim cache_nat_entry(NM_I(sbi), nid, &ne); 387e05df3b1SJaegeuk Kim } 388e05df3b1SJaegeuk Kim 3890a8165d7SJaegeuk Kim /* 390e05df3b1SJaegeuk Kim * The maximum depth is four. 391e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 392e05df3b1SJaegeuk Kim */ 393de93653fSJaegeuk Kim static int get_node_path(struct f2fs_inode_info *fi, long block, 394de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 395e05df3b1SJaegeuk Kim { 396de93653fSJaegeuk Kim const long direct_index = ADDRS_PER_INODE(fi); 397e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 398e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 399e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 400e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 401e05df3b1SJaegeuk Kim int n = 0; 402e05df3b1SJaegeuk Kim int level = 0; 403e05df3b1SJaegeuk Kim 404e05df3b1SJaegeuk Kim noffset[0] = 0; 405e05df3b1SJaegeuk Kim 406e05df3b1SJaegeuk Kim if (block < direct_index) { 40725c0a6e5SNamjae Jeon offset[n] = block; 408e05df3b1SJaegeuk Kim goto got; 409e05df3b1SJaegeuk Kim } 410e05df3b1SJaegeuk Kim block -= direct_index; 411e05df3b1SJaegeuk Kim if (block < direct_blks) { 412e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 413e05df3b1SJaegeuk Kim noffset[n] = 1; 41425c0a6e5SNamjae Jeon offset[n] = block; 415e05df3b1SJaegeuk Kim level = 1; 416e05df3b1SJaegeuk Kim goto got; 417e05df3b1SJaegeuk Kim } 418e05df3b1SJaegeuk Kim block -= direct_blks; 419e05df3b1SJaegeuk Kim if (block < direct_blks) { 420e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 421e05df3b1SJaegeuk Kim noffset[n] = 2; 42225c0a6e5SNamjae Jeon offset[n] = block; 423e05df3b1SJaegeuk Kim level = 1; 424e05df3b1SJaegeuk Kim goto got; 425e05df3b1SJaegeuk Kim } 426e05df3b1SJaegeuk Kim block -= direct_blks; 427e05df3b1SJaegeuk Kim if (block < indirect_blks) { 428e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 429e05df3b1SJaegeuk Kim noffset[n] = 3; 430e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 431e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 43225c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 433e05df3b1SJaegeuk Kim level = 2; 434e05df3b1SJaegeuk Kim goto got; 435e05df3b1SJaegeuk Kim } 436e05df3b1SJaegeuk Kim block -= indirect_blks; 437e05df3b1SJaegeuk Kim if (block < indirect_blks) { 438e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 439e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 440e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 441e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 44225c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 443e05df3b1SJaegeuk Kim level = 2; 444e05df3b1SJaegeuk Kim goto got; 445e05df3b1SJaegeuk Kim } 446e05df3b1SJaegeuk Kim block -= indirect_blks; 447e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 448e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 449e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 450e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 451e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 452e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 453e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 454e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 455e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 456e05df3b1SJaegeuk Kim offset[n - 1]; 45725c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 458e05df3b1SJaegeuk Kim level = 3; 459e05df3b1SJaegeuk Kim goto got; 460e05df3b1SJaegeuk Kim } else { 461e05df3b1SJaegeuk Kim BUG(); 462e05df3b1SJaegeuk Kim } 463e05df3b1SJaegeuk Kim got: 464e05df3b1SJaegeuk Kim return level; 465e05df3b1SJaegeuk Kim } 466e05df3b1SJaegeuk Kim 467e05df3b1SJaegeuk Kim /* 468e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 4694f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 4704f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 47139936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 472e05df3b1SJaegeuk Kim */ 473266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 474e05df3b1SJaegeuk Kim { 4754081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 476e05df3b1SJaegeuk Kim struct page *npage[4]; 477e05df3b1SJaegeuk Kim struct page *parent; 478e05df3b1SJaegeuk Kim int offset[4]; 479e05df3b1SJaegeuk Kim unsigned int noffset[4]; 480e05df3b1SJaegeuk Kim nid_t nids[4]; 481e05df3b1SJaegeuk Kim int level, i; 482e05df3b1SJaegeuk Kim int err = 0; 483e05df3b1SJaegeuk Kim 484de93653fSJaegeuk Kim level = get_node_path(F2FS_I(dn->inode), index, offset, noffset); 485e05df3b1SJaegeuk Kim 486e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 4871646cfacSJaegeuk Kim npage[0] = dn->inode_page; 4881646cfacSJaegeuk Kim 4891646cfacSJaegeuk Kim if (!npage[0]) { 490e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 491e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 492e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 4931646cfacSJaegeuk Kim } 494e05df3b1SJaegeuk Kim parent = npage[0]; 49552c2db3fSChangman Lee if (level != 0) 496e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 497e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 498e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 499e05df3b1SJaegeuk Kim 500e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 501e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 502e05df3b1SJaegeuk Kim bool done = false; 503e05df3b1SJaegeuk Kim 504266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 505e05df3b1SJaegeuk Kim /* alloc new node */ 506e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 507e05df3b1SJaegeuk Kim err = -ENOSPC; 508e05df3b1SJaegeuk Kim goto release_pages; 509e05df3b1SJaegeuk Kim } 510e05df3b1SJaegeuk Kim 511e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5128ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 513e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 514e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 515e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 516e05df3b1SJaegeuk Kim goto release_pages; 517e05df3b1SJaegeuk Kim } 518e05df3b1SJaegeuk Kim 519e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 520e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 521e05df3b1SJaegeuk Kim done = true; 522266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 523e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 524e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 525e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 526e05df3b1SJaegeuk Kim goto release_pages; 527e05df3b1SJaegeuk Kim } 528e05df3b1SJaegeuk Kim done = true; 529e05df3b1SJaegeuk Kim } 530e05df3b1SJaegeuk Kim if (i == 1) { 531e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 532e05df3b1SJaegeuk Kim unlock_page(parent); 533e05df3b1SJaegeuk Kim } else { 534e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 535e05df3b1SJaegeuk Kim } 536e05df3b1SJaegeuk Kim 537e05df3b1SJaegeuk Kim if (!done) { 538e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 539e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 540e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 541e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 542e05df3b1SJaegeuk Kim goto release_out; 543e05df3b1SJaegeuk Kim } 544e05df3b1SJaegeuk Kim } 545e05df3b1SJaegeuk Kim if (i < level) { 546e05df3b1SJaegeuk Kim parent = npage[i]; 547e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 548e05df3b1SJaegeuk Kim } 549e05df3b1SJaegeuk Kim } 550e05df3b1SJaegeuk Kim dn->nid = nids[level]; 551e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 552e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 553e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 554e05df3b1SJaegeuk Kim return 0; 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim release_pages: 557e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 558e05df3b1SJaegeuk Kim if (i > 1) 559e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 560e05df3b1SJaegeuk Kim release_out: 561e05df3b1SJaegeuk Kim dn->inode_page = NULL; 562e05df3b1SJaegeuk Kim dn->node_page = NULL; 563e05df3b1SJaegeuk Kim return err; 564e05df3b1SJaegeuk Kim } 565e05df3b1SJaegeuk Kim 566e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 567e05df3b1SJaegeuk Kim { 5684081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 569e05df3b1SJaegeuk Kim struct node_info ni; 570e05df3b1SJaegeuk Kim 571e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 57271e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 5739850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 57471e9fec5SJaegeuk Kim goto invalidate; 57571e9fec5SJaegeuk Kim } 5769850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 577e05df3b1SJaegeuk Kim 578e05df3b1SJaegeuk Kim /* Deallocate node address */ 57971e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 580ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 581479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 582e05df3b1SJaegeuk Kim 583e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 584e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 585e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 586e05df3b1SJaegeuk Kim } else { 587e05df3b1SJaegeuk Kim sync_inode_page(dn); 588e05df3b1SJaegeuk Kim } 58971e9fec5SJaegeuk Kim invalidate: 590e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 591caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 592e05df3b1SJaegeuk Kim 593e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 594bf39c00aSJaegeuk Kim 595bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 596bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 597bf39c00aSJaegeuk Kim 598e05df3b1SJaegeuk Kim dn->node_page = NULL; 59951dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 600e05df3b1SJaegeuk Kim } 601e05df3b1SJaegeuk Kim 602e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 603e05df3b1SJaegeuk Kim { 604e05df3b1SJaegeuk Kim struct page *page; 605e05df3b1SJaegeuk Kim 606e05df3b1SJaegeuk Kim if (dn->nid == 0) 607e05df3b1SJaegeuk Kim return 1; 608e05df3b1SJaegeuk Kim 609e05df3b1SJaegeuk Kim /* get direct node */ 6104081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 611e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 612e05df3b1SJaegeuk Kim return 1; 613e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 614e05df3b1SJaegeuk Kim return PTR_ERR(page); 615e05df3b1SJaegeuk Kim 616e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 617e05df3b1SJaegeuk Kim dn->node_page = page; 618e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 619e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 620e05df3b1SJaegeuk Kim truncate_node(dn); 621e05df3b1SJaegeuk Kim return 1; 622e05df3b1SJaegeuk Kim } 623e05df3b1SJaegeuk Kim 624e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 625e05df3b1SJaegeuk Kim int ofs, int depth) 626e05df3b1SJaegeuk Kim { 627e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 628e05df3b1SJaegeuk Kim struct page *page; 629e05df3b1SJaegeuk Kim struct f2fs_node *rn; 630e05df3b1SJaegeuk Kim nid_t child_nid; 631e05df3b1SJaegeuk Kim unsigned int child_nofs; 632e05df3b1SJaegeuk Kim int freed = 0; 633e05df3b1SJaegeuk Kim int i, ret; 634e05df3b1SJaegeuk Kim 635e05df3b1SJaegeuk Kim if (dn->nid == 0) 636e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 637e05df3b1SJaegeuk Kim 63851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 63951dd6249SNamjae Jeon 6404081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 64151dd6249SNamjae Jeon if (IS_ERR(page)) { 64251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 643e05df3b1SJaegeuk Kim return PTR_ERR(page); 64451dd6249SNamjae Jeon } 645e05df3b1SJaegeuk Kim 64645590710SGu Zheng rn = F2FS_NODE(page); 647e05df3b1SJaegeuk Kim if (depth < 3) { 648e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 649e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 650e05df3b1SJaegeuk Kim if (child_nid == 0) 651e05df3b1SJaegeuk Kim continue; 652e05df3b1SJaegeuk Kim rdn.nid = child_nid; 653e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 654e05df3b1SJaegeuk Kim if (ret < 0) 655e05df3b1SJaegeuk Kim goto out_err; 656e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 657e05df3b1SJaegeuk Kim } 658e05df3b1SJaegeuk Kim } else { 659e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 660e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 661e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 662e05df3b1SJaegeuk Kim if (child_nid == 0) { 663e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 664e05df3b1SJaegeuk Kim continue; 665e05df3b1SJaegeuk Kim } 666e05df3b1SJaegeuk Kim rdn.nid = child_nid; 667e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 668e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 669e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 670e05df3b1SJaegeuk Kim child_nofs += ret; 671e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 672e05df3b1SJaegeuk Kim goto out_err; 673e05df3b1SJaegeuk Kim } 674e05df3b1SJaegeuk Kim } 675e05df3b1SJaegeuk Kim freed = child_nofs; 676e05df3b1SJaegeuk Kim } 677e05df3b1SJaegeuk Kim 678e05df3b1SJaegeuk Kim if (!ofs) { 679e05df3b1SJaegeuk Kim /* remove current indirect node */ 680e05df3b1SJaegeuk Kim dn->node_page = page; 681e05df3b1SJaegeuk Kim truncate_node(dn); 682e05df3b1SJaegeuk Kim freed++; 683e05df3b1SJaegeuk Kim } else { 684e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 685e05df3b1SJaegeuk Kim } 68651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 687e05df3b1SJaegeuk Kim return freed; 688e05df3b1SJaegeuk Kim 689e05df3b1SJaegeuk Kim out_err: 690e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 69151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 692e05df3b1SJaegeuk Kim return ret; 693e05df3b1SJaegeuk Kim } 694e05df3b1SJaegeuk Kim 695e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 696e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 697e05df3b1SJaegeuk Kim { 698e05df3b1SJaegeuk Kim struct page *pages[2]; 699e05df3b1SJaegeuk Kim nid_t nid[3]; 700e05df3b1SJaegeuk Kim nid_t child_nid; 701e05df3b1SJaegeuk Kim int err = 0; 702e05df3b1SJaegeuk Kim int i; 703e05df3b1SJaegeuk Kim int idx = depth - 2; 704e05df3b1SJaegeuk Kim 705e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 706e05df3b1SJaegeuk Kim if (!nid[0]) 707e05df3b1SJaegeuk Kim return 0; 708e05df3b1SJaegeuk Kim 709e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 710a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 711e1c42045Sarter97 /* reference count'll be increased */ 7124081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 713e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 714e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 715a225dca3Sshifei10.ge idx = i - 1; 716e05df3b1SJaegeuk Kim goto fail; 717e05df3b1SJaegeuk Kim } 718e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 719e05df3b1SJaegeuk Kim } 720e05df3b1SJaegeuk Kim 721e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 722a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 723e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 724e05df3b1SJaegeuk Kim if (!child_nid) 725e05df3b1SJaegeuk Kim continue; 726e05df3b1SJaegeuk Kim dn->nid = child_nid; 727e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 728e05df3b1SJaegeuk Kim if (err < 0) 729e05df3b1SJaegeuk Kim goto fail; 730e05df3b1SJaegeuk Kim set_nid(pages[idx], i, 0, false); 731e05df3b1SJaegeuk Kim } 732e05df3b1SJaegeuk Kim 733a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 734e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 735e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 736e05df3b1SJaegeuk Kim truncate_node(dn); 737e05df3b1SJaegeuk Kim } else { 738e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 739e05df3b1SJaegeuk Kim } 740e05df3b1SJaegeuk Kim offset[idx]++; 741a225dca3Sshifei10.ge offset[idx + 1] = 0; 742a225dca3Sshifei10.ge idx--; 743e05df3b1SJaegeuk Kim fail: 744a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 745e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 74651dd6249SNamjae Jeon 74751dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 74851dd6249SNamjae Jeon 749e05df3b1SJaegeuk Kim return err; 750e05df3b1SJaegeuk Kim } 751e05df3b1SJaegeuk Kim 7520a8165d7SJaegeuk Kim /* 753e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 754e05df3b1SJaegeuk Kim */ 755e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 756e05df3b1SJaegeuk Kim { 7574081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 758e05df3b1SJaegeuk Kim int err = 0, cont = 1; 759e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 7607dd690c8SJaegeuk Kim unsigned int nofs = 0; 76158bfaf44SJaegeuk Kim struct f2fs_inode *ri; 762e05df3b1SJaegeuk Kim struct dnode_of_data dn; 763e05df3b1SJaegeuk Kim struct page *page; 764e05df3b1SJaegeuk Kim 76551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 76651dd6249SNamjae Jeon 767de93653fSJaegeuk Kim level = get_node_path(F2FS_I(inode), from, offset, noffset); 768afcb7ca0SJaegeuk Kim restart: 769e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 77051dd6249SNamjae Jeon if (IS_ERR(page)) { 77151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 772e05df3b1SJaegeuk Kim return PTR_ERR(page); 77351dd6249SNamjae Jeon } 774e05df3b1SJaegeuk Kim 775e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 776e05df3b1SJaegeuk Kim unlock_page(page); 777e05df3b1SJaegeuk Kim 77858bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 779e05df3b1SJaegeuk Kim switch (level) { 780e05df3b1SJaegeuk Kim case 0: 781e05df3b1SJaegeuk Kim case 1: 782e05df3b1SJaegeuk Kim nofs = noffset[1]; 783e05df3b1SJaegeuk Kim break; 784e05df3b1SJaegeuk Kim case 2: 785e05df3b1SJaegeuk Kim nofs = noffset[1]; 786e05df3b1SJaegeuk Kim if (!offset[level - 1]) 787e05df3b1SJaegeuk Kim goto skip_partial; 78858bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 789e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 790e05df3b1SJaegeuk Kim goto fail; 791e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 792e05df3b1SJaegeuk Kim break; 793e05df3b1SJaegeuk Kim case 3: 794e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 795e05df3b1SJaegeuk Kim if (!offset[level - 1]) 796e05df3b1SJaegeuk Kim goto skip_partial; 79758bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 798e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 799e05df3b1SJaegeuk Kim goto fail; 800e05df3b1SJaegeuk Kim break; 801e05df3b1SJaegeuk Kim default: 802e05df3b1SJaegeuk Kim BUG(); 803e05df3b1SJaegeuk Kim } 804e05df3b1SJaegeuk Kim 805e05df3b1SJaegeuk Kim skip_partial: 806e05df3b1SJaegeuk Kim while (cont) { 80758bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 808e05df3b1SJaegeuk Kim switch (offset[0]) { 809e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 810e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 811e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 812e05df3b1SJaegeuk Kim break; 813e05df3b1SJaegeuk Kim 814e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 815e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 816e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 817e05df3b1SJaegeuk Kim break; 818e05df3b1SJaegeuk Kim 819e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 820e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 821e05df3b1SJaegeuk Kim cont = 0; 822e05df3b1SJaegeuk Kim break; 823e05df3b1SJaegeuk Kim 824e05df3b1SJaegeuk Kim default: 825e05df3b1SJaegeuk Kim BUG(); 826e05df3b1SJaegeuk Kim } 827e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 828e05df3b1SJaegeuk Kim goto fail; 829e05df3b1SJaegeuk Kim if (offset[1] == 0 && 83058bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 831e05df3b1SJaegeuk Kim lock_page(page); 8324ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 833afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 834afcb7ca0SJaegeuk Kim goto restart; 835afcb7ca0SJaegeuk Kim } 8363cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 83758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 838e05df3b1SJaegeuk Kim set_page_dirty(page); 839e05df3b1SJaegeuk Kim unlock_page(page); 840e05df3b1SJaegeuk Kim } 841e05df3b1SJaegeuk Kim offset[1] = 0; 842e05df3b1SJaegeuk Kim offset[0]++; 843e05df3b1SJaegeuk Kim nofs += err; 844e05df3b1SJaegeuk Kim } 845e05df3b1SJaegeuk Kim fail: 846e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 84751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 848e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 849e05df3b1SJaegeuk Kim } 850e05df3b1SJaegeuk Kim 8514f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 8524f16fb0fSJaegeuk Kim { 8534081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 8544f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 8554f16fb0fSJaegeuk Kim struct dnode_of_data dn; 8564f16fb0fSJaegeuk Kim struct page *npage; 8574f16fb0fSJaegeuk Kim 8584f16fb0fSJaegeuk Kim if (!nid) 8594f16fb0fSJaegeuk Kim return 0; 8604f16fb0fSJaegeuk Kim 8614f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 8624f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 8634f16fb0fSJaegeuk Kim return PTR_ERR(npage); 8644f16fb0fSJaegeuk Kim 8654f16fb0fSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = 0; 86665985d93SJaegeuk Kim 86765985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 86865985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 86965985d93SJaegeuk Kim 8704f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 8714f16fb0fSJaegeuk Kim 8724f16fb0fSJaegeuk Kim if (page) 87301d2d1aaSChao Yu dn.inode_page_locked = true; 8744f16fb0fSJaegeuk Kim truncate_node(&dn); 8754f16fb0fSJaegeuk Kim return 0; 8764f16fb0fSJaegeuk Kim } 8774f16fb0fSJaegeuk Kim 87839936837SJaegeuk Kim /* 8794f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 8804f4124d0SChao Yu * f2fs_unlock_op(). 88139936837SJaegeuk Kim */ 88258e674d6SGu Zheng void remove_inode_page(struct inode *inode) 883e05df3b1SJaegeuk Kim { 884e05df3b1SJaegeuk Kim struct dnode_of_data dn; 885e05df3b1SJaegeuk Kim 886c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 887c2e69583SJaegeuk Kim if (get_dnode_of_data(&dn, 0, LOOKUP_NODE)) 88858e674d6SGu Zheng return; 889e05df3b1SJaegeuk Kim 890c2e69583SJaegeuk Kim if (truncate_xattr_node(inode, dn.inode_page)) { 891c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 89258e674d6SGu Zheng return; 893e05df3b1SJaegeuk Kim } 894c2e69583SJaegeuk Kim 895c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 896c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 897c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 898c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 899c2e69583SJaegeuk Kim 900e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9019850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9029850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 903c2e69583SJaegeuk Kim 904c2e69583SJaegeuk Kim /* will put inode & node pages */ 905e05df3b1SJaegeuk Kim truncate_node(&dn); 906e05df3b1SJaegeuk Kim } 907e05df3b1SJaegeuk Kim 908a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 909e05df3b1SJaegeuk Kim { 910e05df3b1SJaegeuk Kim struct dnode_of_data dn; 911e05df3b1SJaegeuk Kim 912e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 913e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 91444a83ff6SJaegeuk Kim 91544a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 9168ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 917e05df3b1SJaegeuk Kim } 918e05df3b1SJaegeuk Kim 9198ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 9208ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 921e05df3b1SJaegeuk Kim { 9224081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 923e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 924e05df3b1SJaegeuk Kim struct page *page; 925e05df3b1SJaegeuk Kim int err; 926e05df3b1SJaegeuk Kim 9276bacf52fSJaegeuk Kim if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) 928e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 929e05df3b1SJaegeuk Kim 93054b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), dn->nid); 931e05df3b1SJaegeuk Kim if (!page) 932e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 933e05df3b1SJaegeuk Kim 9346bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 9359c02740cSJaegeuk Kim err = -ENOSPC; 9369c02740cSJaegeuk Kim goto fail; 9379c02740cSJaegeuk Kim } 938e05df3b1SJaegeuk Kim 9399c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 940e05df3b1SJaegeuk Kim 941e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 9429850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 943e05df3b1SJaegeuk Kim new_ni = old_ni; 944e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 945479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 9469c02740cSJaegeuk Kim 94754b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 9489c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 949398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 9509c02740cSJaegeuk Kim SetPageUptodate(page); 9519c02740cSJaegeuk Kim set_page_dirty(page); 952e05df3b1SJaegeuk Kim 9534bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 954479bd73aSJaegeuk Kim F2FS_I(dn->inode)->i_xattr_nid = dn->nid; 955479bd73aSJaegeuk Kim 956e05df3b1SJaegeuk Kim dn->node_page = page; 9578ae8f162SJaegeuk Kim if (ipage) 9588ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 9598ae8f162SJaegeuk Kim else 960e05df3b1SJaegeuk Kim sync_inode_page(dn); 961e05df3b1SJaegeuk Kim if (ofs == 0) 962e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 963e05df3b1SJaegeuk Kim 964e05df3b1SJaegeuk Kim return page; 965e05df3b1SJaegeuk Kim 966e05df3b1SJaegeuk Kim fail: 96771e9fec5SJaegeuk Kim clear_node_page_dirty(page); 968e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 969e05df3b1SJaegeuk Kim return ERR_PTR(err); 970e05df3b1SJaegeuk Kim } 971e05df3b1SJaegeuk Kim 97256ae674cSJaegeuk Kim /* 97356ae674cSJaegeuk Kim * Caller should do after getting the following values. 97456ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 97556ae674cSJaegeuk Kim * LOCKED_PAGE: f2fs_put_page(page, 1) 97656ae674cSJaegeuk Kim * error: nothing 97756ae674cSJaegeuk Kim */ 97893dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 979e05df3b1SJaegeuk Kim { 9804081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 981e05df3b1SJaegeuk Kim struct node_info ni; 982cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 983cf04e8ebSJaegeuk Kim .type = NODE, 984cf04e8ebSJaegeuk Kim .rw = rw, 985cf04e8ebSJaegeuk Kim }; 986e05df3b1SJaegeuk Kim 987e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 988e05df3b1SJaegeuk Kim 9896bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 990393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 991e05df3b1SJaegeuk Kim return -ENOENT; 992393ff91fSJaegeuk Kim } 993393ff91fSJaegeuk Kim 99456ae674cSJaegeuk Kim if (PageUptodate(page)) 99556ae674cSJaegeuk Kim return LOCKED_PAGE; 996393ff91fSJaegeuk Kim 997cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 998cf04e8ebSJaegeuk Kim return f2fs_submit_page_bio(sbi, page, &fio); 999e05df3b1SJaegeuk Kim } 1000e05df3b1SJaegeuk Kim 10010a8165d7SJaegeuk Kim /* 1002e05df3b1SJaegeuk Kim * Readahead a node page 1003e05df3b1SJaegeuk Kim */ 1004e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1005e05df3b1SJaegeuk Kim { 1006e05df3b1SJaegeuk Kim struct page *apage; 100756ae674cSJaegeuk Kim int err; 1008e05df3b1SJaegeuk Kim 10094ef51a8fSJaegeuk Kim apage = find_get_page(NODE_MAPPING(sbi), nid); 1010393ff91fSJaegeuk Kim if (apage && PageUptodate(apage)) { 1011393ff91fSJaegeuk Kim f2fs_put_page(apage, 0); 1012393ff91fSJaegeuk Kim return; 1013393ff91fSJaegeuk Kim } 1014e05df3b1SJaegeuk Kim f2fs_put_page(apage, 0); 1015e05df3b1SJaegeuk Kim 10164ef51a8fSJaegeuk Kim apage = grab_cache_page(NODE_MAPPING(sbi), nid); 1017e05df3b1SJaegeuk Kim if (!apage) 1018e05df3b1SJaegeuk Kim return; 1019e05df3b1SJaegeuk Kim 102056ae674cSJaegeuk Kim err = read_node_page(apage, READA); 102156ae674cSJaegeuk Kim if (err == 0) 1022369a708cSJaegeuk Kim f2fs_put_page(apage, 0); 102356ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 102456ae674cSJaegeuk Kim f2fs_put_page(apage, 1); 1025e05df3b1SJaegeuk Kim } 1026e05df3b1SJaegeuk Kim 1027e05df3b1SJaegeuk Kim struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 1028e05df3b1SJaegeuk Kim { 102956ae674cSJaegeuk Kim struct page *page; 103056ae674cSJaegeuk Kim int err; 1031afcb7ca0SJaegeuk Kim repeat: 103254b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1033e05df3b1SJaegeuk Kim if (!page) 1034e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1035e05df3b1SJaegeuk Kim 1036e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 103756ae674cSJaegeuk Kim if (err < 0) 1038e05df3b1SJaegeuk Kim return ERR_PTR(err); 1039aaf96075SJaegeuk Kim else if (err != LOCKED_PAGE) 1040393ff91fSJaegeuk Kim lock_page(page); 1041aaf96075SJaegeuk Kim 10423bb5e2c8SJaegeuk Kim if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) { 1043aaf96075SJaegeuk Kim ClearPageUptodate(page); 1044393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1045393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1046393ff91fSJaegeuk Kim } 10474ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1048afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1049afcb7ca0SJaegeuk Kim goto repeat; 1050afcb7ca0SJaegeuk Kim } 1051e05df3b1SJaegeuk Kim return page; 1052e05df3b1SJaegeuk Kim } 1053e05df3b1SJaegeuk Kim 10540a8165d7SJaegeuk Kim /* 1055e05df3b1SJaegeuk Kim * Return a locked page for the desired node page. 1056e05df3b1SJaegeuk Kim * And, readahead MAX_RA_NODE number of node pages. 1057e05df3b1SJaegeuk Kim */ 1058e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1059e05df3b1SJaegeuk Kim { 10604081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 1061c718379bSJaegeuk Kim struct blk_plug plug; 1062e05df3b1SJaegeuk Kim struct page *page; 106356ae674cSJaegeuk Kim int err, i, end; 106456ae674cSJaegeuk Kim nid_t nid; 1065e05df3b1SJaegeuk Kim 1066e05df3b1SJaegeuk Kim /* First, try getting the desired direct node. */ 1067e05df3b1SJaegeuk Kim nid = get_nid(parent, start, false); 1068e05df3b1SJaegeuk Kim if (!nid) 1069e05df3b1SJaegeuk Kim return ERR_PTR(-ENOENT); 1070afcb7ca0SJaegeuk Kim repeat: 10714ef51a8fSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1072e05df3b1SJaegeuk Kim if (!page) 1073e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1074e05df3b1SJaegeuk Kim 107566d36a29SJaegeuk Kim err = read_node_page(page, READ_SYNC); 107656ae674cSJaegeuk Kim if (err < 0) 1077e05df3b1SJaegeuk Kim return ERR_PTR(err); 107856ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 107956ae674cSJaegeuk Kim goto page_hit; 1080e05df3b1SJaegeuk Kim 1081c718379bSJaegeuk Kim blk_start_plug(&plug); 1082c718379bSJaegeuk Kim 1083e05df3b1SJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 1084e05df3b1SJaegeuk Kim end = start + MAX_RA_NODE; 1085e05df3b1SJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 1086e05df3b1SJaegeuk Kim for (i = start + 1; i < end; i++) { 1087e05df3b1SJaegeuk Kim nid = get_nid(parent, i, false); 1088e05df3b1SJaegeuk Kim if (!nid) 1089e05df3b1SJaegeuk Kim continue; 1090e05df3b1SJaegeuk Kim ra_node_page(sbi, nid); 1091e05df3b1SJaegeuk Kim } 1092e05df3b1SJaegeuk Kim 1093c718379bSJaegeuk Kim blk_finish_plug(&plug); 1094c718379bSJaegeuk Kim 1095e05df3b1SJaegeuk Kim lock_page(page); 10964ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1097afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1098afcb7ca0SJaegeuk Kim goto repeat; 1099afcb7ca0SJaegeuk Kim } 1100e0f56cb4SNamjae Jeon page_hit: 11016bacf52fSJaegeuk Kim if (unlikely(!PageUptodate(page))) { 1102e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1103e05df3b1SJaegeuk Kim return ERR_PTR(-EIO); 1104e05df3b1SJaegeuk Kim } 1105e05df3b1SJaegeuk Kim return page; 1106e05df3b1SJaegeuk Kim } 1107e05df3b1SJaegeuk Kim 1108e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1109e05df3b1SJaegeuk Kim { 1110e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 1111e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->node_page); 1112e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1113e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1114e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 1115e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->inode_page); 1116e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1117e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1118e05df3b1SJaegeuk Kim } else { 111939936837SJaegeuk Kim update_inode_page(dn->inode); 1120e05df3b1SJaegeuk Kim } 1121e05df3b1SJaegeuk Kim } 1122e05df3b1SJaegeuk Kim 1123e05df3b1SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1124e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1125e05df3b1SJaegeuk Kim { 1126e05df3b1SJaegeuk Kim pgoff_t index, end; 1127e05df3b1SJaegeuk Kim struct pagevec pvec; 1128e05df3b1SJaegeuk Kim int step = ino ? 2 : 0; 1129e05df3b1SJaegeuk Kim int nwritten = 0, wrote = 0; 1130e05df3b1SJaegeuk Kim 1131e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1132e05df3b1SJaegeuk Kim 1133e05df3b1SJaegeuk Kim next_step: 1134e05df3b1SJaegeuk Kim index = 0; 1135e05df3b1SJaegeuk Kim end = LONG_MAX; 1136e05df3b1SJaegeuk Kim 1137e05df3b1SJaegeuk Kim while (index <= end) { 1138e05df3b1SJaegeuk Kim int i, nr_pages; 11394ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1140e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1141e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1142e05df3b1SJaegeuk Kim if (nr_pages == 0) 1143e05df3b1SJaegeuk Kim break; 1144e05df3b1SJaegeuk Kim 1145e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1146e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1147e05df3b1SJaegeuk Kim 1148e05df3b1SJaegeuk Kim /* 1149e05df3b1SJaegeuk Kim * flushing sequence with step: 1150e05df3b1SJaegeuk Kim * 0. indirect nodes 1151e05df3b1SJaegeuk Kim * 1. dentry dnodes 1152e05df3b1SJaegeuk Kim * 2. file dnodes 1153e05df3b1SJaegeuk Kim */ 1154e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1155e05df3b1SJaegeuk Kim continue; 1156e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1157e05df3b1SJaegeuk Kim is_cold_node(page))) 1158e05df3b1SJaegeuk Kim continue; 1159e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1160e05df3b1SJaegeuk Kim !is_cold_node(page))) 1161e05df3b1SJaegeuk Kim continue; 1162e05df3b1SJaegeuk Kim 1163e05df3b1SJaegeuk Kim /* 1164e05df3b1SJaegeuk Kim * If an fsync mode, 1165e05df3b1SJaegeuk Kim * we should not skip writing node pages. 1166e05df3b1SJaegeuk Kim */ 1167e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) == ino) 1168e05df3b1SJaegeuk Kim lock_page(page); 1169e05df3b1SJaegeuk Kim else if (!trylock_page(page)) 1170e05df3b1SJaegeuk Kim continue; 1171e05df3b1SJaegeuk Kim 11724ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1173e05df3b1SJaegeuk Kim continue_unlock: 1174e05df3b1SJaegeuk Kim unlock_page(page); 1175e05df3b1SJaegeuk Kim continue; 1176e05df3b1SJaegeuk Kim } 1177e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) != ino) 1178e05df3b1SJaegeuk Kim goto continue_unlock; 1179e05df3b1SJaegeuk Kim 1180e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1181e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1182e05df3b1SJaegeuk Kim goto continue_unlock; 1183e05df3b1SJaegeuk Kim } 1184e05df3b1SJaegeuk Kim 1185e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1186e05df3b1SJaegeuk Kim goto continue_unlock; 1187e05df3b1SJaegeuk Kim 1188e05df3b1SJaegeuk Kim /* called by fsync() */ 1189e05df3b1SJaegeuk Kim if (ino && IS_DNODE(page)) { 1190e05df3b1SJaegeuk Kim set_fsync_mark(page, 1); 119188bd02c9SJaegeuk Kim if (IS_INODE(page)) { 119288bd02c9SJaegeuk Kim if (!is_checkpointed_node(sbi, ino) && 119388bd02c9SJaegeuk Kim !has_fsynced_inode(sbi, ino)) 119488bd02c9SJaegeuk Kim set_dentry_mark(page, 1); 119588bd02c9SJaegeuk Kim else 119688bd02c9SJaegeuk Kim set_dentry_mark(page, 0); 119788bd02c9SJaegeuk Kim } 1198e05df3b1SJaegeuk Kim nwritten++; 1199e05df3b1SJaegeuk Kim } else { 1200e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1201e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 1202e05df3b1SJaegeuk Kim } 120352746519SJaegeuk Kim 120452746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 120552746519SJaegeuk Kim unlock_page(page); 120652746519SJaegeuk Kim else 1207e05df3b1SJaegeuk Kim wrote++; 1208e05df3b1SJaegeuk Kim 1209e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1210e05df3b1SJaegeuk Kim break; 1211e05df3b1SJaegeuk Kim } 1212e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1213e05df3b1SJaegeuk Kim cond_resched(); 1214e05df3b1SJaegeuk Kim 1215e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1216e05df3b1SJaegeuk Kim step = 2; 1217e05df3b1SJaegeuk Kim break; 1218e05df3b1SJaegeuk Kim } 1219e05df3b1SJaegeuk Kim } 1220e05df3b1SJaegeuk Kim 1221e05df3b1SJaegeuk Kim if (step < 2) { 1222e05df3b1SJaegeuk Kim step++; 1223e05df3b1SJaegeuk Kim goto next_step; 1224e05df3b1SJaegeuk Kim } 1225e05df3b1SJaegeuk Kim 1226e05df3b1SJaegeuk Kim if (wrote) 1227458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 1228e05df3b1SJaegeuk Kim return nwritten; 1229e05df3b1SJaegeuk Kim } 1230e05df3b1SJaegeuk Kim 1231cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1232cfe58f9dSJaegeuk Kim { 1233cfe58f9dSJaegeuk Kim pgoff_t index = 0, end = LONG_MAX; 1234cfe58f9dSJaegeuk Kim struct pagevec pvec; 1235cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1236cfe58f9dSJaegeuk Kim 1237cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 12384ef51a8fSJaegeuk Kim 12394ef51a8fSJaegeuk Kim while (index <= end) { 12404ef51a8fSJaegeuk Kim int i, nr_pages; 12414ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1242cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 12434ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 12444ef51a8fSJaegeuk Kim if (nr_pages == 0) 12454ef51a8fSJaegeuk Kim break; 1246cfe58f9dSJaegeuk Kim 1247cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1248cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1249cfe58f9dSJaegeuk Kim 1250cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1251cfb271d4SChao Yu if (unlikely(page->index > end)) 1252cfe58f9dSJaegeuk Kim continue; 1253cfe58f9dSJaegeuk Kim 12544bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 12553cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1256cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1257cfe58f9dSJaegeuk Kim ret = -EIO; 1258cfe58f9dSJaegeuk Kim } 12594bf08ff6SChao Yu } 1260cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1261cfe58f9dSJaegeuk Kim cond_resched(); 1262cfe58f9dSJaegeuk Kim } 1263cfe58f9dSJaegeuk Kim 12644ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1265cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 12664ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1267cfe58f9dSJaegeuk Kim ret2 = -EIO; 1268cfe58f9dSJaegeuk Kim if (!ret) 1269cfe58f9dSJaegeuk Kim ret = ret2; 1270cfe58f9dSJaegeuk Kim return ret; 1271cfe58f9dSJaegeuk Kim } 1272cfe58f9dSJaegeuk Kim 1273e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1274e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1275e05df3b1SJaegeuk Kim { 12764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1277e05df3b1SJaegeuk Kim nid_t nid; 1278e05df3b1SJaegeuk Kim struct node_info ni; 1279fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 1280fb5566daSJaegeuk Kim .type = NODE, 1281fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 1282fb5566daSJaegeuk Kim }; 1283e05df3b1SJaegeuk Kim 1284ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1285ecda0de3SChao Yu 1286caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 128787a9bd26SJaegeuk Kim goto redirty_out; 1288cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1289cf779cabSJaegeuk Kim goto redirty_out; 129087a9bd26SJaegeuk Kim 12913cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1292e05df3b1SJaegeuk Kim 1293e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1294e05df3b1SJaegeuk Kim nid = nid_of_node(page); 12959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1296e05df3b1SJaegeuk Kim 1297e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1298e05df3b1SJaegeuk Kim 1299e05df3b1SJaegeuk Kim /* This page is already truncated */ 13006bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 130139936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 130239936837SJaegeuk Kim unlock_page(page); 130339936837SJaegeuk Kim return 0; 130439936837SJaegeuk Kim } 1305e05df3b1SJaegeuk Kim 13062f97c326SJaegeuk Kim if (wbc->for_reclaim) { 13072f97c326SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 130887a9bd26SJaegeuk Kim goto redirty_out; 13092f97c326SJaegeuk Kim } else { 1310b3582c68SChao Yu down_read(&sbi->node_write); 13112f97c326SJaegeuk Kim } 1312cf04e8ebSJaegeuk Kim 1313e05df3b1SJaegeuk Kim set_page_writeback(page); 1314cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 1315cf04e8ebSJaegeuk Kim write_node_page(sbi, page, nid, &fio); 1316cf04e8ebSJaegeuk Kim set_node_addr(sbi, &ni, fio.blk_addr, is_fsync_dnode(page)); 1317e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1318b3582c68SChao Yu up_read(&sbi->node_write); 1319e05df3b1SJaegeuk Kim unlock_page(page); 132027c6bd60SJaegeuk Kim 132127c6bd60SJaegeuk Kim if (wbc->for_reclaim) 132227c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 132327c6bd60SJaegeuk Kim 1324e05df3b1SJaegeuk Kim return 0; 132587a9bd26SJaegeuk Kim 132687a9bd26SJaegeuk Kim redirty_out: 132776f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 132887a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1329e05df3b1SJaegeuk Kim } 1330e05df3b1SJaegeuk Kim 1331e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1332e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1333e05df3b1SJaegeuk Kim { 13344081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 133550c8cdb3SJaegeuk Kim long diff; 1336e05df3b1SJaegeuk Kim 1337e5748434SChao Yu trace_f2fs_writepages(mapping->host, wbc, NODE); 1338e5748434SChao Yu 13394660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 13404660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1341e05df3b1SJaegeuk Kim 1342a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 134387d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1344d3baf95dSJaegeuk Kim goto skip_write; 1345a7fdffbdSJaegeuk Kim 134650c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1347fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 1348e05df3b1SJaegeuk Kim sync_node_pages(sbi, 0, wbc); 134950c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1350e05df3b1SJaegeuk Kim return 0; 1351d3baf95dSJaegeuk Kim 1352d3baf95dSJaegeuk Kim skip_write: 1353d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1354d3baf95dSJaegeuk Kim return 0; 1355e05df3b1SJaegeuk Kim } 1356e05df3b1SJaegeuk Kim 1357e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1358e05df3b1SJaegeuk Kim { 135926c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 136026c6b887SJaegeuk Kim 1361e05df3b1SJaegeuk Kim SetPageUptodate(page); 1362e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1363e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 13644081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1365e05df3b1SJaegeuk Kim SetPagePrivate(page); 13669e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1367e05df3b1SJaegeuk Kim return 1; 1368e05df3b1SJaegeuk Kim } 1369e05df3b1SJaegeuk Kim return 0; 1370e05df3b1SJaegeuk Kim } 1371e05df3b1SJaegeuk Kim 13720a8165d7SJaegeuk Kim /* 1373e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1374e05df3b1SJaegeuk Kim */ 1375e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1376e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1377e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1378e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1379487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1380487261f3SChao Yu .releasepage = f2fs_release_page, 1381e05df3b1SJaegeuk Kim }; 1382e05df3b1SJaegeuk Kim 13838a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 13848a7ed66aSJaegeuk Kim nid_t n) 1385e05df3b1SJaegeuk Kim { 13868a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 13873aa770a9SNamjae Jeon } 1388e05df3b1SJaegeuk Kim 13898a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 13908a7ed66aSJaegeuk Kim struct free_nid *i) 1391e05df3b1SJaegeuk Kim { 1392e05df3b1SJaegeuk Kim list_del(&i->list); 13938a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1394e05df3b1SJaegeuk Kim } 1395e05df3b1SJaegeuk Kim 13966fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1397e05df3b1SJaegeuk Kim { 13986fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1399e05df3b1SJaegeuk Kim struct free_nid *i; 140059bbd474SJaegeuk Kim struct nat_entry *ne; 140159bbd474SJaegeuk Kim bool allocated = false; 1402e05df3b1SJaegeuk Kim 14036fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 140423d38844SHaicheng Li return -1; 14059198acebSJaegeuk Kim 14069198acebSJaegeuk Kim /* 0 nid should not be used */ 1407cfb271d4SChao Yu if (unlikely(nid == 0)) 14089198acebSJaegeuk Kim return 0; 140959bbd474SJaegeuk Kim 14107bd59381SGu Zheng if (build) { 141159bbd474SJaegeuk Kim /* do not add allocated nids */ 14128b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 141359bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 14148a7ed66aSJaegeuk Kim if (ne && 14157ef35e3bSJaegeuk Kim (!get_nat_flag(ne, IS_CHECKPOINTED) || 14167ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 141759bbd474SJaegeuk Kim allocated = true; 14188b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 141959bbd474SJaegeuk Kim if (allocated) 142059bbd474SJaegeuk Kim return 0; 1421e05df3b1SJaegeuk Kim } 14227bd59381SGu Zheng 14237bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1424e05df3b1SJaegeuk Kim i->nid = nid; 1425e05df3b1SJaegeuk Kim i->state = NID_NEW; 1426e05df3b1SJaegeuk Kim 1427769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1428769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1429769ec6e5SJaegeuk Kim return 0; 1430769ec6e5SJaegeuk Kim } 1431769ec6e5SJaegeuk Kim 1432e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14338a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1434e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1435769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1436e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1437e05df3b1SJaegeuk Kim return 0; 1438e05df3b1SJaegeuk Kim } 1439e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1440e05df3b1SJaegeuk Kim nm_i->fcnt++; 1441e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1442769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1443e05df3b1SJaegeuk Kim return 1; 1444e05df3b1SJaegeuk Kim } 1445e05df3b1SJaegeuk Kim 1446e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1447e05df3b1SJaegeuk Kim { 1448e05df3b1SJaegeuk Kim struct free_nid *i; 1449cf0ee0f0SChao Yu bool need_free = false; 1450cf0ee0f0SChao Yu 1451e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14528a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1453e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 14548a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1455e05df3b1SJaegeuk Kim nm_i->fcnt--; 1456cf0ee0f0SChao Yu need_free = true; 1457e05df3b1SJaegeuk Kim } 1458e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1459cf0ee0f0SChao Yu 1460cf0ee0f0SChao Yu if (need_free) 1461cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1462e05df3b1SJaegeuk Kim } 1463e05df3b1SJaegeuk Kim 14646fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1465e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1466e05df3b1SJaegeuk Kim { 14676fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1468e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1469e05df3b1SJaegeuk Kim block_t blk_addr; 1470e05df3b1SJaegeuk Kim int i; 1471e05df3b1SJaegeuk Kim 1472e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1473e05df3b1SJaegeuk Kim 1474e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 147523d38844SHaicheng Li 1476cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 147704431c44SJaegeuk Kim break; 147823d38844SHaicheng Li 1479e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 14809850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 148123d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 14826fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 148323d38844SHaicheng Li break; 148423d38844SHaicheng Li } 1485e05df3b1SJaegeuk Kim } 1486e05df3b1SJaegeuk Kim } 1487e05df3b1SJaegeuk Kim 1488e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1489e05df3b1SJaegeuk Kim { 1490e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1491e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1492e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 14938760952dSHaicheng Li int i = 0; 149455008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1495e05df3b1SJaegeuk Kim 149655008d84SJaegeuk Kim /* Enough entries */ 149755008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 149855008d84SJaegeuk Kim return; 1499e05df3b1SJaegeuk Kim 150055008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 1501662befdaSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT); 1502e05df3b1SJaegeuk Kim 1503e05df3b1SJaegeuk Kim while (1) { 1504e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1505e05df3b1SJaegeuk Kim 15066fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1507e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1508e05df3b1SJaegeuk Kim 1509e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1510cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1511e05df3b1SJaegeuk Kim nid = 0; 151255008d84SJaegeuk Kim 151355008d84SJaegeuk Kim if (i++ == FREE_NID_PAGES) 1514e05df3b1SJaegeuk Kim break; 1515e05df3b1SJaegeuk Kim } 1516e05df3b1SJaegeuk Kim 151755008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 151855008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1519e05df3b1SJaegeuk Kim 1520e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1521e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1522e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1523e05df3b1SJaegeuk Kim block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr); 1524e05df3b1SJaegeuk Kim nid = le32_to_cpu(nid_in_journal(sum, i)); 1525e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 15266fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1527e05df3b1SJaegeuk Kim else 1528e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1529e05df3b1SJaegeuk Kim } 1530e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1531e05df3b1SJaegeuk Kim } 1532e05df3b1SJaegeuk Kim 1533e05df3b1SJaegeuk Kim /* 1534e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1535e05df3b1SJaegeuk Kim * from second parameter of this function. 1536e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1537e05df3b1SJaegeuk Kim */ 1538e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1539e05df3b1SJaegeuk Kim { 1540e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1541e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1542e05df3b1SJaegeuk Kim retry: 15437ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1544e05df3b1SJaegeuk Kim return false; 1545e05df3b1SJaegeuk Kim 1546e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1547e05df3b1SJaegeuk Kim 154855008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1549f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 15509850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 15512d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1552e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1553e05df3b1SJaegeuk Kim break; 1554e05df3b1SJaegeuk Kim 15559850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1556e05df3b1SJaegeuk Kim *nid = i->nid; 1557e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1558e05df3b1SJaegeuk Kim nm_i->fcnt--; 1559e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1560e05df3b1SJaegeuk Kim return true; 1561e05df3b1SJaegeuk Kim } 156255008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 156355008d84SJaegeuk Kim 156455008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 156555008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 156655008d84SJaegeuk Kim build_free_nids(sbi); 156755008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 156855008d84SJaegeuk Kim goto retry; 156955008d84SJaegeuk Kim } 1570e05df3b1SJaegeuk Kim 15710a8165d7SJaegeuk Kim /* 1572e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1573e05df3b1SJaegeuk Kim */ 1574e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1575e05df3b1SJaegeuk Kim { 1576e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1577e05df3b1SJaegeuk Kim struct free_nid *i; 1578e05df3b1SJaegeuk Kim 1579e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 15808a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 15819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 15828a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1583e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1584cf0ee0f0SChao Yu 1585cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1586e05df3b1SJaegeuk Kim } 1587e05df3b1SJaegeuk Kim 15880a8165d7SJaegeuk Kim /* 1589e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1590e05df3b1SJaegeuk Kim */ 1591e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1592e05df3b1SJaegeuk Kim { 159349952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 159449952fa1SJaegeuk Kim struct free_nid *i; 1595cf0ee0f0SChao Yu bool need_free = false; 159649952fa1SJaegeuk Kim 159765985d93SJaegeuk Kim if (!nid) 159865985d93SJaegeuk Kim return; 159965985d93SJaegeuk Kim 160049952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16018a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16036fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 16048a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1605cf0ee0f0SChao Yu need_free = true; 160695630cbaSHaicheng Li } else { 160749952fa1SJaegeuk Kim i->state = NID_NEW; 160849952fa1SJaegeuk Kim nm_i->fcnt++; 160995630cbaSHaicheng Li } 161049952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1611cf0ee0f0SChao Yu 1612cf0ee0f0SChao Yu if (need_free) 1613cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1614e05df3b1SJaegeuk Kim } 1615e05df3b1SJaegeuk Kim 161670cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 161728cdce04SChao Yu { 161828cdce04SChao Yu void *src_addr, *dst_addr; 161928cdce04SChao Yu size_t inline_size; 162028cdce04SChao Yu struct page *ipage; 162128cdce04SChao Yu struct f2fs_inode *ri; 162228cdce04SChao Yu 16234081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 16249850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 162528cdce04SChao Yu 1626e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1627e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 1628e3b4d43fSJaegeuk Kim clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); 1629e3b4d43fSJaegeuk Kim goto update_inode; 1630e3b4d43fSJaegeuk Kim } 1631e3b4d43fSJaegeuk Kim 163228cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 163328cdce04SChao Yu src_addr = inline_xattr_addr(page); 163428cdce04SChao Yu inline_size = inline_xattr_size(inode); 163528cdce04SChao Yu 163654b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE); 163728cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1638e3b4d43fSJaegeuk Kim update_inode: 163928cdce04SChao Yu update_inode(inode, ipage); 164028cdce04SChao Yu f2fs_put_page(ipage, 1); 164128cdce04SChao Yu } 164228cdce04SChao Yu 16431c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1644abb2366cSJaegeuk Kim { 16454081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1646abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1647abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1648abb2366cSJaegeuk Kim struct node_info ni; 1649abb2366cSJaegeuk Kim 1650abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1651abb2366cSJaegeuk Kim if (!prev_xnid) 1652abb2366cSJaegeuk Kim goto recover_xnid; 1653abb2366cSJaegeuk Kim 1654abb2366cSJaegeuk Kim /* Deallocate node address */ 1655abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 16569850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1657abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1658abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1659479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1660abb2366cSJaegeuk Kim 1661abb2366cSJaegeuk Kim recover_xnid: 1662abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1663abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 16649850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1665abb2366cSJaegeuk Kim 1666abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1667abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1668abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1669479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1670abb2366cSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = new_xnid; 1671abb2366cSJaegeuk Kim 1672abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1673abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1674479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1675abb2366cSJaegeuk Kim 1676abb2366cSJaegeuk Kim update_inode_page(inode); 1677abb2366cSJaegeuk Kim } 1678abb2366cSJaegeuk Kim 1679e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 1680e05df3b1SJaegeuk Kim { 168158bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 1682e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 1683e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1684e05df3b1SJaegeuk Kim struct page *ipage; 1685e05df3b1SJaegeuk Kim 1686e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 1687e8271fa3SJaegeuk Kim 1688e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 1689e8271fa3SJaegeuk Kim return -EINVAL; 1690e8271fa3SJaegeuk Kim 16914ef51a8fSJaegeuk Kim ipage = grab_cache_page(NODE_MAPPING(sbi), ino); 1692e05df3b1SJaegeuk Kim if (!ipage) 1693e05df3b1SJaegeuk Kim return -ENOMEM; 1694e05df3b1SJaegeuk Kim 1695e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 1696e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 1697e05df3b1SJaegeuk Kim 1698e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 1699e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 1700e05df3b1SJaegeuk Kim 170158bfaf44SJaegeuk Kim src = F2FS_INODE(page); 170258bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 1703e05df3b1SJaegeuk Kim 170458bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 170558bfaf44SJaegeuk Kim dst->i_size = 0; 170658bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 170758bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 170858bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 1709617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 1710e05df3b1SJaegeuk Kim 1711e05df3b1SJaegeuk Kim new_ni = old_ni; 1712e05df3b1SJaegeuk Kim new_ni.ino = ino; 1713e05df3b1SJaegeuk Kim 1714cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 171565e5cd0aSJaegeuk Kim WARN_ON(1); 1716479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 1717e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1718617deb8cSJaegeuk Kim set_page_dirty(ipage); 1719e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 1720e05df3b1SJaegeuk Kim return 0; 1721e05df3b1SJaegeuk Kim } 1722e05df3b1SJaegeuk Kim 1723e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 1724e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 1725e05df3b1SJaegeuk Kim { 1726e05df3b1SJaegeuk Kim struct f2fs_node *rn; 1727e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 1728e05df3b1SJaegeuk Kim block_t addr; 172990a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 17309ecf4b80SChao Yu int i, idx, last_offset, nrpages; 1731e05df3b1SJaegeuk Kim 1732e05df3b1SJaegeuk Kim /* scan the node segment */ 1733e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 1734e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 1735e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 1736e05df3b1SJaegeuk Kim 17379ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 17389af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 1739393ff91fSJaegeuk Kim 17409af0ff1cSChao Yu /* readahead node pages */ 17419ecf4b80SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR); 17429af0ff1cSChao Yu 17439ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 17449ecf4b80SChao Yu struct page *page = get_meta_page(sbi, idx); 1745393ff91fSJaegeuk Kim 17469ecf4b80SChao Yu rn = F2FS_NODE(page); 1747393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 1748393ff91fSJaegeuk Kim sum_entry->version = 0; 1749393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 17509af0ff1cSChao Yu sum_entry++; 17519ecf4b80SChao Yu f2fs_put_page(page, 1); 17529af0ff1cSChao Yu } 1753bac4eef6SChao Yu 17549ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 1755bac4eef6SChao Yu addr + nrpages); 17569af0ff1cSChao Yu } 17579ecf4b80SChao Yu return 0; 1758e05df3b1SJaegeuk Kim } 1759e05df3b1SJaegeuk Kim 1760aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 1761e05df3b1SJaegeuk Kim { 1762e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1763e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1764e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1765e05df3b1SJaegeuk Kim int i; 1766e05df3b1SJaegeuk Kim 1767e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1768e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1769e05df3b1SJaegeuk Kim struct nat_entry *ne; 1770e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 1771e05df3b1SJaegeuk Kim nid_t nid = le32_to_cpu(nid_in_journal(sum, i)); 1772e05df3b1SJaegeuk Kim 1773e05df3b1SJaegeuk Kim raw_ne = nat_in_journal(sum, i); 17749be32d72SJaegeuk Kim 17758b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 1776e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1777e05df3b1SJaegeuk Kim if (!ne) { 17789be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 177994dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 17809be32d72SJaegeuk Kim } 1781e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 17828b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 1783e05df3b1SJaegeuk Kim } 1784e05df3b1SJaegeuk Kim update_nats_in_cursum(sum, -i); 1785e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1786e05df3b1SJaegeuk Kim } 1787e05df3b1SJaegeuk Kim 1788309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 1789309cc2b6SJaegeuk Kim struct list_head *head, int max) 1790e05df3b1SJaegeuk Kim { 1791309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 1792e05df3b1SJaegeuk Kim 1793309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 1794309cc2b6SJaegeuk Kim goto add_out; 1795e05df3b1SJaegeuk Kim 1796309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 1797309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 1798309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 1799309cc2b6SJaegeuk Kim return; 1800309cc2b6SJaegeuk Kim } 1801309cc2b6SJaegeuk Kim } 1802309cc2b6SJaegeuk Kim add_out: 1803309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 1804aec71382SChao Yu } 1805aec71382SChao Yu 1806309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 1807309cc2b6SJaegeuk Kim struct nat_entry_set *set) 1808309cc2b6SJaegeuk Kim { 1809309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1810309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1811309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 1812309cc2b6SJaegeuk Kim bool to_journal = true; 1813309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 1814309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 1815309cc2b6SJaegeuk Kim struct page *page = NULL; 1816aec71382SChao Yu 1817aec71382SChao Yu /* 1818aec71382SChao Yu * there are two steps to flush nat entries: 1819aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 1820aec71382SChao Yu * #2, flush nat entries to nat page. 1821aec71382SChao Yu */ 1822309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) 1823aec71382SChao Yu to_journal = false; 1824aec71382SChao Yu 1825aec71382SChao Yu if (to_journal) { 1826aec71382SChao Yu mutex_lock(&curseg->curseg_mutex); 1827aec71382SChao Yu } else { 1828e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 1829e05df3b1SJaegeuk Kim nat_blk = page_address(page); 18309850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 1831e05df3b1SJaegeuk Kim } 1832e05df3b1SJaegeuk Kim 1833aec71382SChao Yu /* flush dirty nats in nat entry set */ 1834309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 1835aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 1836aec71382SChao Yu nid_t nid = nat_get_nid(ne); 1837aec71382SChao Yu int offset; 1838aec71382SChao Yu 1839309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 1840309cc2b6SJaegeuk Kim continue; 1841309cc2b6SJaegeuk Kim 1842aec71382SChao Yu if (to_journal) { 1843aec71382SChao Yu offset = lookup_journal_in_cursum(sum, 1844aec71382SChao Yu NAT_JOURNAL, nid, 1); 18459850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 1846aec71382SChao Yu raw_ne = &nat_in_journal(sum, offset); 1847aec71382SChao Yu nid_in_journal(sum, offset) = cpu_to_le32(nid); 1848aec71382SChao Yu } else { 1849aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 1850aec71382SChao Yu } 1851aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 1852aec71382SChao Yu 18538b26ef98SJaegeuk Kim down_write(&NM_I(sbi)->nat_tree_lock); 185488bd02c9SJaegeuk Kim nat_reset_flag(ne); 1855309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 18568b26ef98SJaegeuk Kim up_write(&NM_I(sbi)->nat_tree_lock); 1857309cc2b6SJaegeuk Kim 1858309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 1859309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 1860e05df3b1SJaegeuk Kim } 1861aec71382SChao Yu 1862aec71382SChao Yu if (to_journal) 1863e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1864aec71382SChao Yu else 1865e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1866aec71382SChao Yu 186780ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 186880ec2e91SChangman Lee 1869309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 1870309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 1871309cc2b6SJaegeuk Kim } 1872aec71382SChao Yu 1873309cc2b6SJaegeuk Kim /* 1874309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 1875309cc2b6SJaegeuk Kim */ 1876309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 1877309cc2b6SJaegeuk Kim { 1878309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1879309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1880309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 18817aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 1882309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 1883309cc2b6SJaegeuk Kim unsigned int found; 1884309cc2b6SJaegeuk Kim nid_t set_idx = 0; 1885309cc2b6SJaegeuk Kim LIST_HEAD(sets); 1886309cc2b6SJaegeuk Kim 188720d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 188820d047c8SChangman Lee return; 1889309cc2b6SJaegeuk Kim /* 1890309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 1891309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 1892309cc2b6SJaegeuk Kim * into nat entry set. 1893309cc2b6SJaegeuk Kim */ 1894309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 1895309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 1896309cc2b6SJaegeuk Kim 1897309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 18987aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 1899309cc2b6SJaegeuk Kim unsigned idx; 1900309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 1901309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 1902309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 1903309cc2b6SJaegeuk Kim MAX_NAT_JENTRIES(sum)); 1904309cc2b6SJaegeuk Kim } 1905309cc2b6SJaegeuk Kim 1906309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 1907309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 1908309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 1909309cc2b6SJaegeuk Kim 19109850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 1911e05df3b1SJaegeuk Kim } 1912e05df3b1SJaegeuk Kim 1913e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 1914e05df3b1SJaegeuk Kim { 1915e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 1916e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1917e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 1918e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 1919e05df3b1SJaegeuk Kim 1920e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 1921e05df3b1SJaegeuk Kim 1922e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 1923e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 1924e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 1925b63da15eSJaegeuk Kim 19267ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 19277ee0eeabSJaegeuk Kim 1928b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 1929c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 1930e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 1931e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 1932cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 1933e05df3b1SJaegeuk Kim 19348a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 1935e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 1936769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 1937769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 1938e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 1939e05df3b1SJaegeuk Kim 1940e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 1941e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 19428b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 1943e05df3b1SJaegeuk Kim 1944e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 194579b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 1946e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 1947e05df3b1SJaegeuk Kim if (!version_bitmap) 1948e05df3b1SJaegeuk Kim return -EFAULT; 1949e05df3b1SJaegeuk Kim 195079b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 195179b5793bSAlexandru Gheorghiu GFP_KERNEL); 195279b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 195379b5793bSAlexandru Gheorghiu return -ENOMEM; 1954e05df3b1SJaegeuk Kim return 0; 1955e05df3b1SJaegeuk Kim } 1956e05df3b1SJaegeuk Kim 1957e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 1958e05df3b1SJaegeuk Kim { 1959e05df3b1SJaegeuk Kim int err; 1960e05df3b1SJaegeuk Kim 1961e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 1962e05df3b1SJaegeuk Kim if (!sbi->nm_info) 1963e05df3b1SJaegeuk Kim return -ENOMEM; 1964e05df3b1SJaegeuk Kim 1965e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 1966e05df3b1SJaegeuk Kim if (err) 1967e05df3b1SJaegeuk Kim return err; 1968e05df3b1SJaegeuk Kim 1969e05df3b1SJaegeuk Kim build_free_nids(sbi); 1970e05df3b1SJaegeuk Kim return 0; 1971e05df3b1SJaegeuk Kim } 1972e05df3b1SJaegeuk Kim 1973e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 1974e05df3b1SJaegeuk Kim { 1975e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1976e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 1977e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 19787aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 1979e05df3b1SJaegeuk Kim nid_t nid = 0; 1980e05df3b1SJaegeuk Kim unsigned int found; 1981e05df3b1SJaegeuk Kim 1982e05df3b1SJaegeuk Kim if (!nm_i) 1983e05df3b1SJaegeuk Kim return; 1984e05df3b1SJaegeuk Kim 1985e05df3b1SJaegeuk Kim /* destroy free nid list */ 1986e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1987e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 19889850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 19898a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1990e05df3b1SJaegeuk Kim nm_i->fcnt--; 1991cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 1992cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1993cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 1994e05df3b1SJaegeuk Kim } 19959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 1996e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1997e05df3b1SJaegeuk Kim 1998e05df3b1SJaegeuk Kim /* destroy nat cache */ 19998b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2000e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2001e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2002e05df3b1SJaegeuk Kim unsigned idx; 20037aed0d45SJaegeuk Kim 2004b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2005b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2006b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2007e05df3b1SJaegeuk Kim } 20089850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 20097aed0d45SJaegeuk Kim 20107aed0d45SJaegeuk Kim /* destroy nat set cache */ 20117aed0d45SJaegeuk Kim nid = 0; 20127aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 20137aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 20147aed0d45SJaegeuk Kim unsigned idx; 20157aed0d45SJaegeuk Kim 20167aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 20177aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 20187aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 20197aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 20207aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 20217aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 20227aed0d45SJaegeuk Kim } 20237aed0d45SJaegeuk Kim } 20248b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2025e05df3b1SJaegeuk Kim 2026e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2027e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2028e05df3b1SJaegeuk Kim kfree(nm_i); 2029e05df3b1SJaegeuk Kim } 2030e05df3b1SJaegeuk Kim 20316e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2032e05df3b1SJaegeuk Kim { 2033e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2034e8512d2eSGu Zheng sizeof(struct nat_entry)); 2035e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2036aec71382SChao Yu goto fail; 2037e05df3b1SJaegeuk Kim 2038e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2039e8512d2eSGu Zheng sizeof(struct free_nid)); 2040aec71382SChao Yu if (!free_nid_slab) 2041ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2042aec71382SChao Yu 2043aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2044aec71382SChao Yu sizeof(struct nat_entry_set)); 2045aec71382SChao Yu if (!nat_entry_set_slab) 2046ce3e6d25SMarkus Elfring goto destroy_free_nid; 2047e05df3b1SJaegeuk Kim return 0; 2048aec71382SChao Yu 2049ce3e6d25SMarkus Elfring destroy_free_nid: 2050aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2051ce3e6d25SMarkus Elfring destroy_nat_entry: 2052aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2053aec71382SChao Yu fail: 2054aec71382SChao Yu return -ENOMEM; 2055e05df3b1SJaegeuk Kim } 2056e05df3b1SJaegeuk Kim 2057e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2058e05df3b1SJaegeuk Kim { 2059aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2060e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2061e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2062e05df3b1SJaegeuk Kim } 2063