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" 2251dd6249SNamjae Jeon #include <trace/events/f2fs.h> 23e05df3b1SJaegeuk Kim 24f978f5a0SGu Zheng #define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) 25f978f5a0SGu Zheng 26e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 27e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 28aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 29e05df3b1SJaegeuk Kim 306fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 31cdfc41c1SJaegeuk Kim { 326fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 33cdfc41c1SJaegeuk Kim struct sysinfo val; 34e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 35cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 366fb03f3aSJaegeuk Kim bool res = false; 37cdfc41c1SJaegeuk Kim 38cdfc41c1SJaegeuk Kim si_meminfo(&val); 39e5e7ea3cSJaegeuk Kim 40e5e7ea3cSJaegeuk Kim /* only uses low memory */ 41e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 42e5e7ea3cSJaegeuk Kim 43e5e7ea3cSJaegeuk Kim /* give 25%, 25%, 50%, 50% memory for each components respectively */ 446fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 45e5e7ea3cSJaegeuk Kim mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 46e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 47e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 486fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 49e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 50e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 51e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 526fb03f3aSJaegeuk Kim } else if (type == DIRTY_DENTS) { 532743f865SJaegeuk Kim if (sbi->sb->s_bdi->dirty_exceeded) 542743f865SJaegeuk Kim return false; 556fb03f3aSJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 56e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 57e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 58e5e7ea3cSJaegeuk Kim int i; 59e5e7ea3cSJaegeuk Kim 60e5e7ea3cSJaegeuk Kim if (sbi->sb->s_bdi->dirty_exceeded) 61e5e7ea3cSJaegeuk Kim return false; 62e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6367298804SChao Yu mem_size += (sbi->im[i].ino_num * 6467298804SChao Yu sizeof(struct ino_entry)) >> PAGE_CACHE_SHIFT; 65e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 666fb03f3aSJaegeuk Kim } 676fb03f3aSJaegeuk Kim return res; 68cdfc41c1SJaegeuk Kim } 69cdfc41c1SJaegeuk Kim 70e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 71e05df3b1SJaegeuk Kim { 72e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 73e05df3b1SJaegeuk Kim unsigned int long flags; 74e05df3b1SJaegeuk Kim 75e05df3b1SJaegeuk Kim if (PageDirty(page)) { 76e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 77e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 78e05df3b1SJaegeuk Kim page_index(page), 79e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 80e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 81e05df3b1SJaegeuk Kim 82e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 834081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 84e05df3b1SJaegeuk Kim } 85e05df3b1SJaegeuk Kim ClearPageUptodate(page); 86e05df3b1SJaegeuk Kim } 87e05df3b1SJaegeuk Kim 88e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 89e05df3b1SJaegeuk Kim { 90e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 91e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 92e05df3b1SJaegeuk Kim } 93e05df3b1SJaegeuk Kim 94e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 95e05df3b1SJaegeuk Kim { 96e05df3b1SJaegeuk Kim struct page *src_page; 97e05df3b1SJaegeuk Kim struct page *dst_page; 98e05df3b1SJaegeuk Kim pgoff_t src_off; 99e05df3b1SJaegeuk Kim pgoff_t dst_off; 100e05df3b1SJaegeuk Kim void *src_addr; 101e05df3b1SJaegeuk Kim void *dst_addr; 102e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 103e05df3b1SJaegeuk Kim 104e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 105e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 106e05df3b1SJaegeuk Kim 107e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 108e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 109e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1109850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 111e05df3b1SJaegeuk Kim 112e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 113e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 114e05df3b1SJaegeuk Kim memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); 115e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 116e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 117e05df3b1SJaegeuk Kim 118e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 119e05df3b1SJaegeuk Kim 120e05df3b1SJaegeuk Kim return dst_page; 121e05df3b1SJaegeuk Kim } 122e05df3b1SJaegeuk Kim 123e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 124e05df3b1SJaegeuk Kim { 125e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 126e05df3b1SJaegeuk Kim } 127e05df3b1SJaegeuk Kim 128e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 129e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 130e05df3b1SJaegeuk Kim { 131e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 132e05df3b1SJaegeuk Kim } 133e05df3b1SJaegeuk Kim 134e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 135e05df3b1SJaegeuk Kim { 136e05df3b1SJaegeuk Kim list_del(&e->list); 137e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 138e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 139e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 140e05df3b1SJaegeuk Kim } 141e05df3b1SJaegeuk Kim 142309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 143309cc2b6SJaegeuk Kim struct nat_entry *ne) 144309cc2b6SJaegeuk Kim { 145309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 146309cc2b6SJaegeuk Kim struct nat_entry_set *head; 147309cc2b6SJaegeuk Kim 148309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 149309cc2b6SJaegeuk Kim return; 150309cc2b6SJaegeuk Kim retry: 151309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 152309cc2b6SJaegeuk Kim if (!head) { 153309cc2b6SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_ATOMIC); 154309cc2b6SJaegeuk Kim 155309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 156309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 157309cc2b6SJaegeuk Kim head->set = set; 158309cc2b6SJaegeuk Kim head->entry_cnt = 0; 159309cc2b6SJaegeuk Kim 160309cc2b6SJaegeuk Kim if (radix_tree_insert(&nm_i->nat_set_root, set, head)) { 1614634d71eSJaegeuk Kim kmem_cache_free(nat_entry_set_slab, head); 162309cc2b6SJaegeuk Kim goto retry; 163309cc2b6SJaegeuk Kim } 164309cc2b6SJaegeuk Kim } 165309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 166309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 167309cc2b6SJaegeuk Kim head->entry_cnt++; 168309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 169309cc2b6SJaegeuk Kim } 170309cc2b6SJaegeuk Kim 171309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 172309cc2b6SJaegeuk Kim struct nat_entry *ne) 173309cc2b6SJaegeuk Kim { 17420d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 175309cc2b6SJaegeuk Kim struct nat_entry_set *head; 176309cc2b6SJaegeuk Kim 177309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 178309cc2b6SJaegeuk Kim if (head) { 179309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 180309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 181309cc2b6SJaegeuk Kim head->entry_cnt--; 182309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 183309cc2b6SJaegeuk Kim } 184309cc2b6SJaegeuk Kim } 185309cc2b6SJaegeuk Kim 186309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 187309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 188309cc2b6SJaegeuk Kim { 189309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 190309cc2b6SJaegeuk Kim start, nr); 191309cc2b6SJaegeuk Kim } 192309cc2b6SJaegeuk Kim 19388bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 194e05df3b1SJaegeuk Kim { 195e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 196e05df3b1SJaegeuk Kim struct nat_entry *e; 19788bd02c9SJaegeuk Kim bool is_cp = true; 198e05df3b1SJaegeuk Kim 1998b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 200e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2017ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 20288bd02c9SJaegeuk Kim is_cp = false; 2038b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 204e05df3b1SJaegeuk Kim return is_cp; 205e05df3b1SJaegeuk Kim } 206e05df3b1SJaegeuk Kim 20788bd02c9SJaegeuk Kim bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino) 208479f40c4SJaegeuk Kim { 209479f40c4SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 210479f40c4SJaegeuk Kim struct nat_entry *e; 21188bd02c9SJaegeuk Kim bool fsynced = false; 212479f40c4SJaegeuk Kim 2138b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 21488bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 21588bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_FSYNCED_INODE)) 21688bd02c9SJaegeuk Kim fsynced = true; 2178b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 21888bd02c9SJaegeuk Kim return fsynced; 219479f40c4SJaegeuk Kim } 220479f40c4SJaegeuk Kim 22188bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 222b6fe5873SJaegeuk Kim { 223b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 224b6fe5873SJaegeuk Kim struct nat_entry *e; 22588bd02c9SJaegeuk Kim bool need_update = true; 226b6fe5873SJaegeuk Kim 2278b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 22888bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 22988bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23088bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 23188bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 23288bd02c9SJaegeuk Kim need_update = false; 2338b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 23488bd02c9SJaegeuk Kim return need_update; 235b6fe5873SJaegeuk Kim } 236b6fe5873SJaegeuk Kim 237e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 238e05df3b1SJaegeuk Kim { 239e05df3b1SJaegeuk Kim struct nat_entry *new; 240e05df3b1SJaegeuk Kim 241e05df3b1SJaegeuk Kim new = kmem_cache_alloc(nat_entry_slab, GFP_ATOMIC); 242e05df3b1SJaegeuk Kim if (!new) 243e05df3b1SJaegeuk Kim return NULL; 244e05df3b1SJaegeuk Kim if (radix_tree_insert(&nm_i->nat_root, nid, new)) { 245e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, new); 246e05df3b1SJaegeuk Kim return NULL; 247e05df3b1SJaegeuk Kim } 248e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 249e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25088bd02c9SJaegeuk Kim nat_reset_flag(new); 251e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 252e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 253e05df3b1SJaegeuk Kim return new; 254e05df3b1SJaegeuk Kim } 255e05df3b1SJaegeuk Kim 256e05df3b1SJaegeuk Kim static void cache_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 257e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 258e05df3b1SJaegeuk Kim { 259e05df3b1SJaegeuk Kim struct nat_entry *e; 260e05df3b1SJaegeuk Kim retry: 2618b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 262e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 263e05df3b1SJaegeuk Kim if (!e) { 264e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 265e05df3b1SJaegeuk Kim if (!e) { 2668b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 267e05df3b1SJaegeuk Kim goto retry; 268e05df3b1SJaegeuk Kim } 26994dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 270e05df3b1SJaegeuk Kim } 2718b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 272e05df3b1SJaegeuk Kim } 273e05df3b1SJaegeuk Kim 274e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 275479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 276e05df3b1SJaegeuk Kim { 277e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 278e05df3b1SJaegeuk Kim struct nat_entry *e; 279e05df3b1SJaegeuk Kim retry: 2808b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 281e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 282e05df3b1SJaegeuk Kim if (!e) { 283e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 284e05df3b1SJaegeuk Kim if (!e) { 2858b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 286e05df3b1SJaegeuk Kim goto retry; 287e05df3b1SJaegeuk Kim } 288e05df3b1SJaegeuk Kim e->ni = *ni; 2899850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 290e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 291e05df3b1SJaegeuk Kim /* 292e05df3b1SJaegeuk Kim * when nid is reallocated, 293e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 294e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 295e05df3b1SJaegeuk Kim */ 296e05df3b1SJaegeuk Kim e->ni = *ni; 2979850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 298e05df3b1SJaegeuk Kim } 299e05df3b1SJaegeuk Kim 300e05df3b1SJaegeuk Kim /* sanity check */ 3019850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 303e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3049850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 305e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3069850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 307e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 308e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 309e05df3b1SJaegeuk Kim 310e1c42045Sarter97 /* increment version no as node is removed */ 311e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 312e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 313e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 314e05df3b1SJaegeuk Kim } 315e05df3b1SJaegeuk Kim 316e05df3b1SJaegeuk Kim /* change address */ 317e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 31888bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 31988bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 320e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 321479f40c4SJaegeuk Kim 322479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 323479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 32488bd02c9SJaegeuk Kim if (e) { 32588bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 32688bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 32788bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 32888bd02c9SJaegeuk Kim } 3298b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 330e05df3b1SJaegeuk Kim } 331e05df3b1SJaegeuk Kim 3324660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 333e05df3b1SJaegeuk Kim { 334e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 335e05df3b1SJaegeuk Kim 3366fb03f3aSJaegeuk Kim if (available_free_memory(sbi, NAT_ENTRIES)) 337e05df3b1SJaegeuk Kim return 0; 338e05df3b1SJaegeuk Kim 3398b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 340e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 341e05df3b1SJaegeuk Kim struct nat_entry *ne; 342e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 343e05df3b1SJaegeuk Kim struct nat_entry, list); 344e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 345e05df3b1SJaegeuk Kim nr_shrink--; 346e05df3b1SJaegeuk Kim } 3478b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 348e05df3b1SJaegeuk Kim return nr_shrink; 349e05df3b1SJaegeuk Kim } 350e05df3b1SJaegeuk Kim 3510a8165d7SJaegeuk Kim /* 352e1c42045Sarter97 * This function always returns success 353e05df3b1SJaegeuk Kim */ 354e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 355e05df3b1SJaegeuk Kim { 356e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 357e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 358e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 359e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 360e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 361e05df3b1SJaegeuk Kim struct page *page = NULL; 362e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 363e05df3b1SJaegeuk Kim struct nat_entry *e; 364e05df3b1SJaegeuk Kim int i; 365e05df3b1SJaegeuk Kim 366be4124f8SNamjae Jeon memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 367e05df3b1SJaegeuk Kim ni->nid = nid; 368e05df3b1SJaegeuk Kim 369e05df3b1SJaegeuk Kim /* Check nat cache */ 3708b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 371e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 372e05df3b1SJaegeuk Kim if (e) { 373e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 374e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 375e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 376e05df3b1SJaegeuk Kim } 3778b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 378e05df3b1SJaegeuk Kim if (e) 379e05df3b1SJaegeuk Kim return; 380e05df3b1SJaegeuk Kim 381e05df3b1SJaegeuk Kim /* Check current segment summary */ 382e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 383e05df3b1SJaegeuk Kim i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0); 384e05df3b1SJaegeuk Kim if (i >= 0) { 385e05df3b1SJaegeuk Kim ne = nat_in_journal(sum, i); 386e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 387e05df3b1SJaegeuk Kim } 388e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 389e05df3b1SJaegeuk Kim if (i >= 0) 390e05df3b1SJaegeuk Kim goto cache; 391e05df3b1SJaegeuk Kim 392e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 393e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 394e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 395e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 396e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 397e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 398e05df3b1SJaegeuk Kim cache: 399e05df3b1SJaegeuk Kim /* cache nat entry */ 400e05df3b1SJaegeuk Kim cache_nat_entry(NM_I(sbi), nid, &ne); 401e05df3b1SJaegeuk Kim } 402e05df3b1SJaegeuk Kim 4030a8165d7SJaegeuk Kim /* 404e05df3b1SJaegeuk Kim * The maximum depth is four. 405e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 406e05df3b1SJaegeuk Kim */ 407de93653fSJaegeuk Kim static int get_node_path(struct f2fs_inode_info *fi, long block, 408de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 409e05df3b1SJaegeuk Kim { 410de93653fSJaegeuk Kim const long direct_index = ADDRS_PER_INODE(fi); 411e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 412e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 413e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 414e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 415e05df3b1SJaegeuk Kim int n = 0; 416e05df3b1SJaegeuk Kim int level = 0; 417e05df3b1SJaegeuk Kim 418e05df3b1SJaegeuk Kim noffset[0] = 0; 419e05df3b1SJaegeuk Kim 420e05df3b1SJaegeuk Kim if (block < direct_index) { 42125c0a6e5SNamjae Jeon offset[n] = block; 422e05df3b1SJaegeuk Kim goto got; 423e05df3b1SJaegeuk Kim } 424e05df3b1SJaegeuk Kim block -= direct_index; 425e05df3b1SJaegeuk Kim if (block < direct_blks) { 426e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 427e05df3b1SJaegeuk Kim noffset[n] = 1; 42825c0a6e5SNamjae Jeon offset[n] = block; 429e05df3b1SJaegeuk Kim level = 1; 430e05df3b1SJaegeuk Kim goto got; 431e05df3b1SJaegeuk Kim } 432e05df3b1SJaegeuk Kim block -= direct_blks; 433e05df3b1SJaegeuk Kim if (block < direct_blks) { 434e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 435e05df3b1SJaegeuk Kim noffset[n] = 2; 43625c0a6e5SNamjae Jeon offset[n] = block; 437e05df3b1SJaegeuk Kim level = 1; 438e05df3b1SJaegeuk Kim goto got; 439e05df3b1SJaegeuk Kim } 440e05df3b1SJaegeuk Kim block -= direct_blks; 441e05df3b1SJaegeuk Kim if (block < indirect_blks) { 442e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 443e05df3b1SJaegeuk Kim noffset[n] = 3; 444e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 445e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 44625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 447e05df3b1SJaegeuk Kim level = 2; 448e05df3b1SJaegeuk Kim goto got; 449e05df3b1SJaegeuk Kim } 450e05df3b1SJaegeuk Kim block -= indirect_blks; 451e05df3b1SJaegeuk Kim if (block < indirect_blks) { 452e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 453e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 454e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 455e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 45625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 457e05df3b1SJaegeuk Kim level = 2; 458e05df3b1SJaegeuk Kim goto got; 459e05df3b1SJaegeuk Kim } 460e05df3b1SJaegeuk Kim block -= indirect_blks; 461e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 462e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 463e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 464e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 465e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 466e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 467e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 468e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 469e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 470e05df3b1SJaegeuk Kim offset[n - 1]; 47125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 472e05df3b1SJaegeuk Kim level = 3; 473e05df3b1SJaegeuk Kim goto got; 474e05df3b1SJaegeuk Kim } else { 475e05df3b1SJaegeuk Kim BUG(); 476e05df3b1SJaegeuk Kim } 477e05df3b1SJaegeuk Kim got: 478e05df3b1SJaegeuk Kim return level; 479e05df3b1SJaegeuk Kim } 480e05df3b1SJaegeuk Kim 481e05df3b1SJaegeuk Kim /* 482e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 4834f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 4844f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 48539936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 486e05df3b1SJaegeuk Kim */ 487266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 488e05df3b1SJaegeuk Kim { 4894081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 490e05df3b1SJaegeuk Kim struct page *npage[4]; 491e05df3b1SJaegeuk Kim struct page *parent; 492e05df3b1SJaegeuk Kim int offset[4]; 493e05df3b1SJaegeuk Kim unsigned int noffset[4]; 494e05df3b1SJaegeuk Kim nid_t nids[4]; 495e05df3b1SJaegeuk Kim int level, i; 496e05df3b1SJaegeuk Kim int err = 0; 497e05df3b1SJaegeuk Kim 498de93653fSJaegeuk Kim level = get_node_path(F2FS_I(dn->inode), index, offset, noffset); 499e05df3b1SJaegeuk Kim 500e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5011646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5021646cfacSJaegeuk Kim 5031646cfacSJaegeuk Kim if (!npage[0]) { 504e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 505e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 506e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5071646cfacSJaegeuk Kim } 508e05df3b1SJaegeuk Kim parent = npage[0]; 50952c2db3fSChangman Lee if (level != 0) 510e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 511e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 512e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 513e05df3b1SJaegeuk Kim 514e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 515e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 516e05df3b1SJaegeuk Kim bool done = false; 517e05df3b1SJaegeuk Kim 518266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 519e05df3b1SJaegeuk Kim /* alloc new node */ 520e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 521e05df3b1SJaegeuk Kim err = -ENOSPC; 522e05df3b1SJaegeuk Kim goto release_pages; 523e05df3b1SJaegeuk Kim } 524e05df3b1SJaegeuk Kim 525e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5268ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 527e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 528e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 529e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 530e05df3b1SJaegeuk Kim goto release_pages; 531e05df3b1SJaegeuk Kim } 532e05df3b1SJaegeuk Kim 533e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 534e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 535e05df3b1SJaegeuk Kim done = true; 536266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 537e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 538e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 539e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 540e05df3b1SJaegeuk Kim goto release_pages; 541e05df3b1SJaegeuk Kim } 542e05df3b1SJaegeuk Kim done = true; 543e05df3b1SJaegeuk Kim } 544e05df3b1SJaegeuk Kim if (i == 1) { 545e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 546e05df3b1SJaegeuk Kim unlock_page(parent); 547e05df3b1SJaegeuk Kim } else { 548e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 549e05df3b1SJaegeuk Kim } 550e05df3b1SJaegeuk Kim 551e05df3b1SJaegeuk Kim if (!done) { 552e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 553e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 554e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 555e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 556e05df3b1SJaegeuk Kim goto release_out; 557e05df3b1SJaegeuk Kim } 558e05df3b1SJaegeuk Kim } 559e05df3b1SJaegeuk Kim if (i < level) { 560e05df3b1SJaegeuk Kim parent = npage[i]; 561e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 562e05df3b1SJaegeuk Kim } 563e05df3b1SJaegeuk Kim } 564e05df3b1SJaegeuk Kim dn->nid = nids[level]; 565e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 566e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 567e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 568e05df3b1SJaegeuk Kim return 0; 569e05df3b1SJaegeuk Kim 570e05df3b1SJaegeuk Kim release_pages: 571e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 572e05df3b1SJaegeuk Kim if (i > 1) 573e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 574e05df3b1SJaegeuk Kim release_out: 575e05df3b1SJaegeuk Kim dn->inode_page = NULL; 576e05df3b1SJaegeuk Kim dn->node_page = NULL; 577e05df3b1SJaegeuk Kim return err; 578e05df3b1SJaegeuk Kim } 579e05df3b1SJaegeuk Kim 580e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 581e05df3b1SJaegeuk Kim { 5824081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 583e05df3b1SJaegeuk Kim struct node_info ni; 584e05df3b1SJaegeuk Kim 585e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 58671e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 5879850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 58871e9fec5SJaegeuk Kim goto invalidate; 58971e9fec5SJaegeuk Kim } 5909850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 591e05df3b1SJaegeuk Kim 592e05df3b1SJaegeuk Kim /* Deallocate node address */ 59371e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 594ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 595479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 596e05df3b1SJaegeuk Kim 597e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 598e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 599e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 600e05df3b1SJaegeuk Kim } else { 601e05df3b1SJaegeuk Kim sync_inode_page(dn); 602e05df3b1SJaegeuk Kim } 60371e9fec5SJaegeuk Kim invalidate: 604e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 605e05df3b1SJaegeuk Kim F2FS_SET_SB_DIRT(sbi); 606e05df3b1SJaegeuk Kim 607e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 608bf39c00aSJaegeuk Kim 609bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 610bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 611bf39c00aSJaegeuk Kim 612e05df3b1SJaegeuk Kim dn->node_page = NULL; 61351dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 614e05df3b1SJaegeuk Kim } 615e05df3b1SJaegeuk Kim 616e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 617e05df3b1SJaegeuk Kim { 618e05df3b1SJaegeuk Kim struct page *page; 619e05df3b1SJaegeuk Kim 620e05df3b1SJaegeuk Kim if (dn->nid == 0) 621e05df3b1SJaegeuk Kim return 1; 622e05df3b1SJaegeuk Kim 623e05df3b1SJaegeuk Kim /* get direct node */ 6244081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 625e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 626e05df3b1SJaegeuk Kim return 1; 627e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 628e05df3b1SJaegeuk Kim return PTR_ERR(page); 629e05df3b1SJaegeuk Kim 630e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 631e05df3b1SJaegeuk Kim dn->node_page = page; 632e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 633e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 634e05df3b1SJaegeuk Kim truncate_node(dn); 635e05df3b1SJaegeuk Kim return 1; 636e05df3b1SJaegeuk Kim } 637e05df3b1SJaegeuk Kim 638e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 639e05df3b1SJaegeuk Kim int ofs, int depth) 640e05df3b1SJaegeuk Kim { 641e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 642e05df3b1SJaegeuk Kim struct page *page; 643e05df3b1SJaegeuk Kim struct f2fs_node *rn; 644e05df3b1SJaegeuk Kim nid_t child_nid; 645e05df3b1SJaegeuk Kim unsigned int child_nofs; 646e05df3b1SJaegeuk Kim int freed = 0; 647e05df3b1SJaegeuk Kim int i, ret; 648e05df3b1SJaegeuk Kim 649e05df3b1SJaegeuk Kim if (dn->nid == 0) 650e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 651e05df3b1SJaegeuk Kim 65251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 65351dd6249SNamjae Jeon 6544081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 65551dd6249SNamjae Jeon if (IS_ERR(page)) { 65651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 657e05df3b1SJaegeuk Kim return PTR_ERR(page); 65851dd6249SNamjae Jeon } 659e05df3b1SJaegeuk Kim 66045590710SGu Zheng rn = F2FS_NODE(page); 661e05df3b1SJaegeuk Kim if (depth < 3) { 662e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 663e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 664e05df3b1SJaegeuk Kim if (child_nid == 0) 665e05df3b1SJaegeuk Kim continue; 666e05df3b1SJaegeuk Kim rdn.nid = child_nid; 667e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 668e05df3b1SJaegeuk Kim if (ret < 0) 669e05df3b1SJaegeuk Kim goto out_err; 670e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 671e05df3b1SJaegeuk Kim } 672e05df3b1SJaegeuk Kim } else { 673e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 674e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 675e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 676e05df3b1SJaegeuk Kim if (child_nid == 0) { 677e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 678e05df3b1SJaegeuk Kim continue; 679e05df3b1SJaegeuk Kim } 680e05df3b1SJaegeuk Kim rdn.nid = child_nid; 681e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 682e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 683e05df3b1SJaegeuk Kim set_nid(page, i, 0, false); 684e05df3b1SJaegeuk Kim child_nofs += ret; 685e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 686e05df3b1SJaegeuk Kim goto out_err; 687e05df3b1SJaegeuk Kim } 688e05df3b1SJaegeuk Kim } 689e05df3b1SJaegeuk Kim freed = child_nofs; 690e05df3b1SJaegeuk Kim } 691e05df3b1SJaegeuk Kim 692e05df3b1SJaegeuk Kim if (!ofs) { 693e05df3b1SJaegeuk Kim /* remove current indirect node */ 694e05df3b1SJaegeuk Kim dn->node_page = page; 695e05df3b1SJaegeuk Kim truncate_node(dn); 696e05df3b1SJaegeuk Kim freed++; 697e05df3b1SJaegeuk Kim } else { 698e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 699e05df3b1SJaegeuk Kim } 70051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 701e05df3b1SJaegeuk Kim return freed; 702e05df3b1SJaegeuk Kim 703e05df3b1SJaegeuk Kim out_err: 704e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 70551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 706e05df3b1SJaegeuk Kim return ret; 707e05df3b1SJaegeuk Kim } 708e05df3b1SJaegeuk Kim 709e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 710e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 711e05df3b1SJaegeuk Kim { 712e05df3b1SJaegeuk Kim struct page *pages[2]; 713e05df3b1SJaegeuk Kim nid_t nid[3]; 714e05df3b1SJaegeuk Kim nid_t child_nid; 715e05df3b1SJaegeuk Kim int err = 0; 716e05df3b1SJaegeuk Kim int i; 717e05df3b1SJaegeuk Kim int idx = depth - 2; 718e05df3b1SJaegeuk Kim 719e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 720e05df3b1SJaegeuk Kim if (!nid[0]) 721e05df3b1SJaegeuk Kim return 0; 722e05df3b1SJaegeuk Kim 723e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 724a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 725e1c42045Sarter97 /* reference count'll be increased */ 7264081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 727e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 728e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 729a225dca3Sshifei10.ge idx = i - 1; 730e05df3b1SJaegeuk Kim goto fail; 731e05df3b1SJaegeuk Kim } 732e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 733e05df3b1SJaegeuk Kim } 734e05df3b1SJaegeuk Kim 735e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 736a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 737e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 738e05df3b1SJaegeuk Kim if (!child_nid) 739e05df3b1SJaegeuk Kim continue; 740e05df3b1SJaegeuk Kim dn->nid = child_nid; 741e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 742e05df3b1SJaegeuk Kim if (err < 0) 743e05df3b1SJaegeuk Kim goto fail; 744e05df3b1SJaegeuk Kim set_nid(pages[idx], i, 0, false); 745e05df3b1SJaegeuk Kim } 746e05df3b1SJaegeuk Kim 747a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 748e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 749e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 750e05df3b1SJaegeuk Kim truncate_node(dn); 751e05df3b1SJaegeuk Kim } else { 752e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 753e05df3b1SJaegeuk Kim } 754e05df3b1SJaegeuk Kim offset[idx]++; 755a225dca3Sshifei10.ge offset[idx + 1] = 0; 756a225dca3Sshifei10.ge idx--; 757e05df3b1SJaegeuk Kim fail: 758a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 759e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 76051dd6249SNamjae Jeon 76151dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 76251dd6249SNamjae Jeon 763e05df3b1SJaegeuk Kim return err; 764e05df3b1SJaegeuk Kim } 765e05df3b1SJaegeuk Kim 7660a8165d7SJaegeuk Kim /* 767e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 768e05df3b1SJaegeuk Kim */ 769e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 770e05df3b1SJaegeuk Kim { 7714081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 772e05df3b1SJaegeuk Kim int err = 0, cont = 1; 773e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 7747dd690c8SJaegeuk Kim unsigned int nofs = 0; 77558bfaf44SJaegeuk Kim struct f2fs_inode *ri; 776e05df3b1SJaegeuk Kim struct dnode_of_data dn; 777e05df3b1SJaegeuk Kim struct page *page; 778e05df3b1SJaegeuk Kim 77951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 78051dd6249SNamjae Jeon 781de93653fSJaegeuk Kim level = get_node_path(F2FS_I(inode), from, offset, noffset); 782afcb7ca0SJaegeuk Kim restart: 783e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 78451dd6249SNamjae Jeon if (IS_ERR(page)) { 78551dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 786e05df3b1SJaegeuk Kim return PTR_ERR(page); 78751dd6249SNamjae Jeon } 788e05df3b1SJaegeuk Kim 789e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 790e05df3b1SJaegeuk Kim unlock_page(page); 791e05df3b1SJaegeuk Kim 79258bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 793e05df3b1SJaegeuk Kim switch (level) { 794e05df3b1SJaegeuk Kim case 0: 795e05df3b1SJaegeuk Kim case 1: 796e05df3b1SJaegeuk Kim nofs = noffset[1]; 797e05df3b1SJaegeuk Kim break; 798e05df3b1SJaegeuk Kim case 2: 799e05df3b1SJaegeuk Kim nofs = noffset[1]; 800e05df3b1SJaegeuk Kim if (!offset[level - 1]) 801e05df3b1SJaegeuk Kim goto skip_partial; 80258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 803e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 804e05df3b1SJaegeuk Kim goto fail; 805e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 806e05df3b1SJaegeuk Kim break; 807e05df3b1SJaegeuk Kim case 3: 808e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 809e05df3b1SJaegeuk Kim if (!offset[level - 1]) 810e05df3b1SJaegeuk Kim goto skip_partial; 81158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 812e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 813e05df3b1SJaegeuk Kim goto fail; 814e05df3b1SJaegeuk Kim break; 815e05df3b1SJaegeuk Kim default: 816e05df3b1SJaegeuk Kim BUG(); 817e05df3b1SJaegeuk Kim } 818e05df3b1SJaegeuk Kim 819e05df3b1SJaegeuk Kim skip_partial: 820e05df3b1SJaegeuk Kim while (cont) { 82158bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 822e05df3b1SJaegeuk Kim switch (offset[0]) { 823e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 824e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 825e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 826e05df3b1SJaegeuk Kim break; 827e05df3b1SJaegeuk Kim 828e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 829e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 830e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 831e05df3b1SJaegeuk Kim break; 832e05df3b1SJaegeuk Kim 833e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 834e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 835e05df3b1SJaegeuk Kim cont = 0; 836e05df3b1SJaegeuk Kim break; 837e05df3b1SJaegeuk Kim 838e05df3b1SJaegeuk Kim default: 839e05df3b1SJaegeuk Kim BUG(); 840e05df3b1SJaegeuk Kim } 841e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 842e05df3b1SJaegeuk Kim goto fail; 843e05df3b1SJaegeuk Kim if (offset[1] == 0 && 84458bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 845e05df3b1SJaegeuk Kim lock_page(page); 8464ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 847afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 848afcb7ca0SJaegeuk Kim goto restart; 849afcb7ca0SJaegeuk Kim } 8503cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 85158bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 852e05df3b1SJaegeuk Kim set_page_dirty(page); 853e05df3b1SJaegeuk Kim unlock_page(page); 854e05df3b1SJaegeuk Kim } 855e05df3b1SJaegeuk Kim offset[1] = 0; 856e05df3b1SJaegeuk Kim offset[0]++; 857e05df3b1SJaegeuk Kim nofs += err; 858e05df3b1SJaegeuk Kim } 859e05df3b1SJaegeuk Kim fail: 860e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 86151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 862e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 863e05df3b1SJaegeuk Kim } 864e05df3b1SJaegeuk Kim 8654f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 8664f16fb0fSJaegeuk Kim { 8674081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 8684f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 8694f16fb0fSJaegeuk Kim struct dnode_of_data dn; 8704f16fb0fSJaegeuk Kim struct page *npage; 8714f16fb0fSJaegeuk Kim 8724f16fb0fSJaegeuk Kim if (!nid) 8734f16fb0fSJaegeuk Kim return 0; 8744f16fb0fSJaegeuk Kim 8754f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 8764f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 8774f16fb0fSJaegeuk Kim return PTR_ERR(npage); 8784f16fb0fSJaegeuk Kim 8794f16fb0fSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = 0; 88065985d93SJaegeuk Kim 88165985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 88265985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 88365985d93SJaegeuk Kim 8844f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 8854f16fb0fSJaegeuk Kim 8864f16fb0fSJaegeuk Kim if (page) 88701d2d1aaSChao Yu dn.inode_page_locked = true; 8884f16fb0fSJaegeuk Kim truncate_node(&dn); 8894f16fb0fSJaegeuk Kim return 0; 8904f16fb0fSJaegeuk Kim } 8914f16fb0fSJaegeuk Kim 89239936837SJaegeuk Kim /* 8934f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 8944f4124d0SChao Yu * f2fs_unlock_op(). 89539936837SJaegeuk Kim */ 89658e674d6SGu Zheng void remove_inode_page(struct inode *inode) 897e05df3b1SJaegeuk Kim { 898e05df3b1SJaegeuk Kim struct dnode_of_data dn; 899e05df3b1SJaegeuk Kim 900c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 901c2e69583SJaegeuk Kim if (get_dnode_of_data(&dn, 0, LOOKUP_NODE)) 90258e674d6SGu Zheng return; 903e05df3b1SJaegeuk Kim 904c2e69583SJaegeuk Kim if (truncate_xattr_node(inode, dn.inode_page)) { 905c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 90658e674d6SGu Zheng return; 907e05df3b1SJaegeuk Kim } 908c2e69583SJaegeuk Kim 909c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 910c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 911c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 912c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 913c2e69583SJaegeuk Kim 914e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9159850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9169850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 917c2e69583SJaegeuk Kim 918c2e69583SJaegeuk Kim /* will put inode & node pages */ 919e05df3b1SJaegeuk Kim truncate_node(&dn); 920e05df3b1SJaegeuk Kim } 921e05df3b1SJaegeuk Kim 922a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 923e05df3b1SJaegeuk Kim { 924e05df3b1SJaegeuk Kim struct dnode_of_data dn; 925e05df3b1SJaegeuk Kim 926e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 927e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 92844a83ff6SJaegeuk Kim 92944a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 9308ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 931e05df3b1SJaegeuk Kim } 932e05df3b1SJaegeuk Kim 9338ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 9348ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 935e05df3b1SJaegeuk Kim { 9364081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 937e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 938e05df3b1SJaegeuk Kim struct page *page; 939e05df3b1SJaegeuk Kim int err; 940e05df3b1SJaegeuk Kim 9416bacf52fSJaegeuk Kim if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) 942e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 943e05df3b1SJaegeuk Kim 94454b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), dn->nid); 945e05df3b1SJaegeuk Kim if (!page) 946e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 947e05df3b1SJaegeuk Kim 9486bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 9499c02740cSJaegeuk Kim err = -ENOSPC; 9509c02740cSJaegeuk Kim goto fail; 9519c02740cSJaegeuk Kim } 952e05df3b1SJaegeuk Kim 9539c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 954e05df3b1SJaegeuk Kim 955e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 9569850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 957e05df3b1SJaegeuk Kim new_ni = old_ni; 958e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 959479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 9609c02740cSJaegeuk Kim 96154b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 9629c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 963398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 9649c02740cSJaegeuk Kim SetPageUptodate(page); 9659c02740cSJaegeuk Kim set_page_dirty(page); 966e05df3b1SJaegeuk Kim 9674bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 968479bd73aSJaegeuk Kim F2FS_I(dn->inode)->i_xattr_nid = dn->nid; 969479bd73aSJaegeuk Kim 970e05df3b1SJaegeuk Kim dn->node_page = page; 9718ae8f162SJaegeuk Kim if (ipage) 9728ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 9738ae8f162SJaegeuk Kim else 974e05df3b1SJaegeuk Kim sync_inode_page(dn); 975e05df3b1SJaegeuk Kim if (ofs == 0) 976e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 977e05df3b1SJaegeuk Kim 978e05df3b1SJaegeuk Kim return page; 979e05df3b1SJaegeuk Kim 980e05df3b1SJaegeuk Kim fail: 98171e9fec5SJaegeuk Kim clear_node_page_dirty(page); 982e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 983e05df3b1SJaegeuk Kim return ERR_PTR(err); 984e05df3b1SJaegeuk Kim } 985e05df3b1SJaegeuk Kim 98656ae674cSJaegeuk Kim /* 98756ae674cSJaegeuk Kim * Caller should do after getting the following values. 98856ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 98956ae674cSJaegeuk Kim * LOCKED_PAGE: f2fs_put_page(page, 1) 99056ae674cSJaegeuk Kim * error: nothing 99156ae674cSJaegeuk Kim */ 99293dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 993e05df3b1SJaegeuk Kim { 9944081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 995e05df3b1SJaegeuk Kim struct node_info ni; 996e05df3b1SJaegeuk Kim 997e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 998e05df3b1SJaegeuk Kim 9996bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1000393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1001e05df3b1SJaegeuk Kim return -ENOENT; 1002393ff91fSJaegeuk Kim } 1003393ff91fSJaegeuk Kim 100456ae674cSJaegeuk Kim if (PageUptodate(page)) 100556ae674cSJaegeuk Kim return LOCKED_PAGE; 1006393ff91fSJaegeuk Kim 100793dfe2acSJaegeuk Kim return f2fs_submit_page_bio(sbi, page, ni.blk_addr, rw); 1008e05df3b1SJaegeuk Kim } 1009e05df3b1SJaegeuk Kim 10100a8165d7SJaegeuk Kim /* 1011e05df3b1SJaegeuk Kim * Readahead a node page 1012e05df3b1SJaegeuk Kim */ 1013e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1014e05df3b1SJaegeuk Kim { 1015e05df3b1SJaegeuk Kim struct page *apage; 101656ae674cSJaegeuk Kim int err; 1017e05df3b1SJaegeuk Kim 10184ef51a8fSJaegeuk Kim apage = find_get_page(NODE_MAPPING(sbi), nid); 1019393ff91fSJaegeuk Kim if (apage && PageUptodate(apage)) { 1020393ff91fSJaegeuk Kim f2fs_put_page(apage, 0); 1021393ff91fSJaegeuk Kim return; 1022393ff91fSJaegeuk Kim } 1023e05df3b1SJaegeuk Kim f2fs_put_page(apage, 0); 1024e05df3b1SJaegeuk Kim 10254ef51a8fSJaegeuk Kim apage = grab_cache_page(NODE_MAPPING(sbi), nid); 1026e05df3b1SJaegeuk Kim if (!apage) 1027e05df3b1SJaegeuk Kim return; 1028e05df3b1SJaegeuk Kim 102956ae674cSJaegeuk Kim err = read_node_page(apage, READA); 103056ae674cSJaegeuk Kim if (err == 0) 1031369a708cSJaegeuk Kim f2fs_put_page(apage, 0); 103256ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 103356ae674cSJaegeuk Kim f2fs_put_page(apage, 1); 1034e05df3b1SJaegeuk Kim } 1035e05df3b1SJaegeuk Kim 1036e05df3b1SJaegeuk Kim struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 1037e05df3b1SJaegeuk Kim { 103856ae674cSJaegeuk Kim struct page *page; 103956ae674cSJaegeuk Kim int err; 1040afcb7ca0SJaegeuk Kim repeat: 104154b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1042e05df3b1SJaegeuk Kim if (!page) 1043e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1044e05df3b1SJaegeuk Kim 1045e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 104656ae674cSJaegeuk Kim if (err < 0) 1047e05df3b1SJaegeuk Kim return ERR_PTR(err); 104856ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 104956ae674cSJaegeuk Kim goto got_it; 1050e05df3b1SJaegeuk Kim 1051393ff91fSJaegeuk Kim lock_page(page); 10523bb5e2c8SJaegeuk Kim if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) { 1053393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1054393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1055393ff91fSJaegeuk Kim } 10564ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1057afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1058afcb7ca0SJaegeuk Kim goto repeat; 1059afcb7ca0SJaegeuk Kim } 106056ae674cSJaegeuk Kim got_it: 1061e05df3b1SJaegeuk Kim return page; 1062e05df3b1SJaegeuk Kim } 1063e05df3b1SJaegeuk Kim 10640a8165d7SJaegeuk Kim /* 1065e05df3b1SJaegeuk Kim * Return a locked page for the desired node page. 1066e05df3b1SJaegeuk Kim * And, readahead MAX_RA_NODE number of node pages. 1067e05df3b1SJaegeuk Kim */ 1068e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1069e05df3b1SJaegeuk Kim { 10704081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 1071c718379bSJaegeuk Kim struct blk_plug plug; 1072e05df3b1SJaegeuk Kim struct page *page; 107356ae674cSJaegeuk Kim int err, i, end; 107456ae674cSJaegeuk Kim nid_t nid; 1075e05df3b1SJaegeuk Kim 1076e05df3b1SJaegeuk Kim /* First, try getting the desired direct node. */ 1077e05df3b1SJaegeuk Kim nid = get_nid(parent, start, false); 1078e05df3b1SJaegeuk Kim if (!nid) 1079e05df3b1SJaegeuk Kim return ERR_PTR(-ENOENT); 1080afcb7ca0SJaegeuk Kim repeat: 10814ef51a8fSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1082e05df3b1SJaegeuk Kim if (!page) 1083e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1084e05df3b1SJaegeuk Kim 108566d36a29SJaegeuk Kim err = read_node_page(page, READ_SYNC); 108656ae674cSJaegeuk Kim if (err < 0) 1087e05df3b1SJaegeuk Kim return ERR_PTR(err); 108856ae674cSJaegeuk Kim else if (err == LOCKED_PAGE) 108956ae674cSJaegeuk Kim goto page_hit; 1090e05df3b1SJaegeuk Kim 1091c718379bSJaegeuk Kim blk_start_plug(&plug); 1092c718379bSJaegeuk Kim 1093e05df3b1SJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 1094e05df3b1SJaegeuk Kim end = start + MAX_RA_NODE; 1095e05df3b1SJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 1096e05df3b1SJaegeuk Kim for (i = start + 1; i < end; i++) { 1097e05df3b1SJaegeuk Kim nid = get_nid(parent, i, false); 1098e05df3b1SJaegeuk Kim if (!nid) 1099e05df3b1SJaegeuk Kim continue; 1100e05df3b1SJaegeuk Kim ra_node_page(sbi, nid); 1101e05df3b1SJaegeuk Kim } 1102e05df3b1SJaegeuk Kim 1103c718379bSJaegeuk Kim blk_finish_plug(&plug); 1104c718379bSJaegeuk Kim 1105e05df3b1SJaegeuk Kim lock_page(page); 11064ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1107afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1108afcb7ca0SJaegeuk Kim goto repeat; 1109afcb7ca0SJaegeuk Kim } 1110e0f56cb4SNamjae Jeon page_hit: 11116bacf52fSJaegeuk Kim if (unlikely(!PageUptodate(page))) { 1112e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1113e05df3b1SJaegeuk Kim return ERR_PTR(-EIO); 1114e05df3b1SJaegeuk Kim } 1115e05df3b1SJaegeuk Kim return page; 1116e05df3b1SJaegeuk Kim } 1117e05df3b1SJaegeuk Kim 1118e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1119e05df3b1SJaegeuk Kim { 1120e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 1121e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->node_page); 1122e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1123e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1124e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 1125e05df3b1SJaegeuk Kim update_inode(dn->inode, dn->inode_page); 1126e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1127e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1128e05df3b1SJaegeuk Kim } else { 112939936837SJaegeuk Kim update_inode_page(dn->inode); 1130e05df3b1SJaegeuk Kim } 1131e05df3b1SJaegeuk Kim } 1132e05df3b1SJaegeuk Kim 1133e05df3b1SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1134e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1135e05df3b1SJaegeuk Kim { 1136e05df3b1SJaegeuk Kim pgoff_t index, end; 1137e05df3b1SJaegeuk Kim struct pagevec pvec; 1138e05df3b1SJaegeuk Kim int step = ino ? 2 : 0; 1139e05df3b1SJaegeuk Kim int nwritten = 0, wrote = 0; 1140e05df3b1SJaegeuk Kim 1141e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1142e05df3b1SJaegeuk Kim 1143e05df3b1SJaegeuk Kim next_step: 1144e05df3b1SJaegeuk Kim index = 0; 1145e05df3b1SJaegeuk Kim end = LONG_MAX; 1146e05df3b1SJaegeuk Kim 1147e05df3b1SJaegeuk Kim while (index <= end) { 1148e05df3b1SJaegeuk Kim int i, nr_pages; 11494ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1150e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1151e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1152e05df3b1SJaegeuk Kim if (nr_pages == 0) 1153e05df3b1SJaegeuk Kim break; 1154e05df3b1SJaegeuk Kim 1155e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1156e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1157e05df3b1SJaegeuk Kim 1158e05df3b1SJaegeuk Kim /* 1159e05df3b1SJaegeuk Kim * flushing sequence with step: 1160e05df3b1SJaegeuk Kim * 0. indirect nodes 1161e05df3b1SJaegeuk Kim * 1. dentry dnodes 1162e05df3b1SJaegeuk Kim * 2. file dnodes 1163e05df3b1SJaegeuk Kim */ 1164e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1165e05df3b1SJaegeuk Kim continue; 1166e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1167e05df3b1SJaegeuk Kim is_cold_node(page))) 1168e05df3b1SJaegeuk Kim continue; 1169e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1170e05df3b1SJaegeuk Kim !is_cold_node(page))) 1171e05df3b1SJaegeuk Kim continue; 1172e05df3b1SJaegeuk Kim 1173e05df3b1SJaegeuk Kim /* 1174e05df3b1SJaegeuk Kim * If an fsync mode, 1175e05df3b1SJaegeuk Kim * we should not skip writing node pages. 1176e05df3b1SJaegeuk Kim */ 1177e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) == ino) 1178e05df3b1SJaegeuk Kim lock_page(page); 1179e05df3b1SJaegeuk Kim else if (!trylock_page(page)) 1180e05df3b1SJaegeuk Kim continue; 1181e05df3b1SJaegeuk Kim 11824ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1183e05df3b1SJaegeuk Kim continue_unlock: 1184e05df3b1SJaegeuk Kim unlock_page(page); 1185e05df3b1SJaegeuk Kim continue; 1186e05df3b1SJaegeuk Kim } 1187e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) != ino) 1188e05df3b1SJaegeuk Kim goto continue_unlock; 1189e05df3b1SJaegeuk Kim 1190e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1191e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1192e05df3b1SJaegeuk Kim goto continue_unlock; 1193e05df3b1SJaegeuk Kim } 1194e05df3b1SJaegeuk Kim 1195e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1196e05df3b1SJaegeuk Kim goto continue_unlock; 1197e05df3b1SJaegeuk Kim 1198e05df3b1SJaegeuk Kim /* called by fsync() */ 1199e05df3b1SJaegeuk Kim if (ino && IS_DNODE(page)) { 1200e05df3b1SJaegeuk Kim set_fsync_mark(page, 1); 120188bd02c9SJaegeuk Kim if (IS_INODE(page)) { 120288bd02c9SJaegeuk Kim if (!is_checkpointed_node(sbi, ino) && 120388bd02c9SJaegeuk Kim !has_fsynced_inode(sbi, ino)) 120488bd02c9SJaegeuk Kim set_dentry_mark(page, 1); 120588bd02c9SJaegeuk Kim else 120688bd02c9SJaegeuk Kim set_dentry_mark(page, 0); 120788bd02c9SJaegeuk Kim } 1208e05df3b1SJaegeuk Kim nwritten++; 1209e05df3b1SJaegeuk Kim } else { 1210e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1211e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 1212e05df3b1SJaegeuk Kim } 121352746519SJaegeuk Kim 121452746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 121552746519SJaegeuk Kim unlock_page(page); 121652746519SJaegeuk Kim else 1217e05df3b1SJaegeuk Kim wrote++; 1218e05df3b1SJaegeuk Kim 1219e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1220e05df3b1SJaegeuk Kim break; 1221e05df3b1SJaegeuk Kim } 1222e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1223e05df3b1SJaegeuk Kim cond_resched(); 1224e05df3b1SJaegeuk Kim 1225e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1226e05df3b1SJaegeuk Kim step = 2; 1227e05df3b1SJaegeuk Kim break; 1228e05df3b1SJaegeuk Kim } 1229e05df3b1SJaegeuk Kim } 1230e05df3b1SJaegeuk Kim 1231e05df3b1SJaegeuk Kim if (step < 2) { 1232e05df3b1SJaegeuk Kim step++; 1233e05df3b1SJaegeuk Kim goto next_step; 1234e05df3b1SJaegeuk Kim } 1235e05df3b1SJaegeuk Kim 1236e05df3b1SJaegeuk Kim if (wrote) 1237458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 1238e05df3b1SJaegeuk Kim return nwritten; 1239e05df3b1SJaegeuk Kim } 1240e05df3b1SJaegeuk Kim 1241cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1242cfe58f9dSJaegeuk Kim { 1243cfe58f9dSJaegeuk Kim pgoff_t index = 0, end = LONG_MAX; 1244cfe58f9dSJaegeuk Kim struct pagevec pvec; 1245cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1246cfe58f9dSJaegeuk Kim 1247cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 12484ef51a8fSJaegeuk Kim 12494ef51a8fSJaegeuk Kim while (index <= end) { 12504ef51a8fSJaegeuk Kim int i, nr_pages; 12514ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1252cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 12534ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 12544ef51a8fSJaegeuk Kim if (nr_pages == 0) 12554ef51a8fSJaegeuk Kim break; 1256cfe58f9dSJaegeuk Kim 1257cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1258cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1259cfe58f9dSJaegeuk Kim 1260cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1261cfb271d4SChao Yu if (unlikely(page->index > end)) 1262cfe58f9dSJaegeuk Kim continue; 1263cfe58f9dSJaegeuk Kim 12644bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 12653cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1266cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1267cfe58f9dSJaegeuk Kim ret = -EIO; 1268cfe58f9dSJaegeuk Kim } 12694bf08ff6SChao Yu } 1270cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1271cfe58f9dSJaegeuk Kim cond_resched(); 1272cfe58f9dSJaegeuk Kim } 1273cfe58f9dSJaegeuk Kim 12744ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1275cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 12764ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1277cfe58f9dSJaegeuk Kim ret2 = -EIO; 1278cfe58f9dSJaegeuk Kim if (!ret) 1279cfe58f9dSJaegeuk Kim ret = ret2; 1280cfe58f9dSJaegeuk Kim return ret; 1281cfe58f9dSJaegeuk Kim } 1282cfe58f9dSJaegeuk Kim 1283e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1284e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1285e05df3b1SJaegeuk Kim { 12864081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1287e05df3b1SJaegeuk Kim nid_t nid; 1288e05df3b1SJaegeuk Kim block_t new_addr; 1289e05df3b1SJaegeuk Kim struct node_info ni; 1290fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 1291fb5566daSJaegeuk Kim .type = NODE, 1292fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 1293fb5566daSJaegeuk Kim }; 1294e05df3b1SJaegeuk Kim 1295ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1296ecda0de3SChao Yu 1297cfb271d4SChao Yu if (unlikely(sbi->por_doing)) 129887a9bd26SJaegeuk Kim goto redirty_out; 1299cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1300cf779cabSJaegeuk Kim goto redirty_out; 130187a9bd26SJaegeuk Kim 13023cb5ad15SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE); 1303e05df3b1SJaegeuk Kim 1304e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1305e05df3b1SJaegeuk Kim nid = nid_of_node(page); 13069850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1307e05df3b1SJaegeuk Kim 1308e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1309e05df3b1SJaegeuk Kim 1310e05df3b1SJaegeuk Kim /* This page is already truncated */ 13116bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 131239936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 131339936837SJaegeuk Kim unlock_page(page); 131439936837SJaegeuk Kim return 0; 131539936837SJaegeuk Kim } 1316e05df3b1SJaegeuk Kim 13172f97c326SJaegeuk Kim if (wbc->for_reclaim) { 13182f97c326SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 131987a9bd26SJaegeuk Kim goto redirty_out; 13202f97c326SJaegeuk Kim } else { 1321b3582c68SChao Yu down_read(&sbi->node_write); 13222f97c326SJaegeuk Kim } 1323e05df3b1SJaegeuk Kim set_page_writeback(page); 1324fb5566daSJaegeuk Kim write_node_page(sbi, page, &fio, nid, ni.blk_addr, &new_addr); 1325479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, new_addr, is_fsync_dnode(page)); 1326e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1327b3582c68SChao Yu up_read(&sbi->node_write); 1328e05df3b1SJaegeuk Kim unlock_page(page); 132927c6bd60SJaegeuk Kim 133027c6bd60SJaegeuk Kim if (wbc->for_reclaim) 133127c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 133227c6bd60SJaegeuk Kim 1333e05df3b1SJaegeuk Kim return 0; 133487a9bd26SJaegeuk Kim 133587a9bd26SJaegeuk Kim redirty_out: 133676f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 133787a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1338e05df3b1SJaegeuk Kim } 1339e05df3b1SJaegeuk Kim 1340e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1341e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1342e05df3b1SJaegeuk Kim { 13434081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 134450c8cdb3SJaegeuk Kim long diff; 1345e05df3b1SJaegeuk Kim 1346e5748434SChao Yu trace_f2fs_writepages(mapping->host, wbc, NODE); 1347e5748434SChao Yu 13484660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 13494660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1350e05df3b1SJaegeuk Kim 1351a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 135287d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1353d3baf95dSJaegeuk Kim goto skip_write; 1354a7fdffbdSJaegeuk Kim 135550c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1356fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 1357e05df3b1SJaegeuk Kim sync_node_pages(sbi, 0, wbc); 135850c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1359e05df3b1SJaegeuk Kim return 0; 1360d3baf95dSJaegeuk Kim 1361d3baf95dSJaegeuk Kim skip_write: 1362d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1363d3baf95dSJaegeuk Kim return 0; 1364e05df3b1SJaegeuk Kim } 1365e05df3b1SJaegeuk Kim 1366e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1367e05df3b1SJaegeuk Kim { 136826c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 136926c6b887SJaegeuk Kim 1370e05df3b1SJaegeuk Kim SetPageUptodate(page); 1371e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1372e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 13734081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1374e05df3b1SJaegeuk Kim SetPagePrivate(page); 1375e05df3b1SJaegeuk Kim return 1; 1376e05df3b1SJaegeuk Kim } 1377e05df3b1SJaegeuk Kim return 0; 1378e05df3b1SJaegeuk Kim } 1379e05df3b1SJaegeuk Kim 1380d47992f8SLukas Czerner static void f2fs_invalidate_node_page(struct page *page, unsigned int offset, 1381d47992f8SLukas Czerner unsigned int length) 1382e05df3b1SJaegeuk Kim { 1383e05df3b1SJaegeuk Kim struct inode *inode = page->mapping->host; 1384e05df3b1SJaegeuk Kim if (PageDirty(page)) 13854081363fSJaegeuk Kim dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_NODES); 1386e05df3b1SJaegeuk Kim ClearPagePrivate(page); 1387e05df3b1SJaegeuk Kim } 1388e05df3b1SJaegeuk Kim 1389e05df3b1SJaegeuk Kim static int f2fs_release_node_page(struct page *page, gfp_t wait) 1390e05df3b1SJaegeuk Kim { 1391e05df3b1SJaegeuk Kim ClearPagePrivate(page); 1392c3850aa1SJaegeuk Kim return 1; 1393e05df3b1SJaegeuk Kim } 1394e05df3b1SJaegeuk Kim 13950a8165d7SJaegeuk Kim /* 1396e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1397e05df3b1SJaegeuk Kim */ 1398e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1399e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1400e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1401e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1402e05df3b1SJaegeuk Kim .invalidatepage = f2fs_invalidate_node_page, 1403e05df3b1SJaegeuk Kim .releasepage = f2fs_release_node_page, 1404e05df3b1SJaegeuk Kim }; 1405e05df3b1SJaegeuk Kim 14068a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 14078a7ed66aSJaegeuk Kim nid_t n) 1408e05df3b1SJaegeuk Kim { 14098a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 14103aa770a9SNamjae Jeon } 1411e05df3b1SJaegeuk Kim 14128a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 14138a7ed66aSJaegeuk Kim struct free_nid *i) 1414e05df3b1SJaegeuk Kim { 1415e05df3b1SJaegeuk Kim list_del(&i->list); 14168a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1417e05df3b1SJaegeuk Kim } 1418e05df3b1SJaegeuk Kim 14196fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1420e05df3b1SJaegeuk Kim { 14216fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1422e05df3b1SJaegeuk Kim struct free_nid *i; 142359bbd474SJaegeuk Kim struct nat_entry *ne; 142459bbd474SJaegeuk Kim bool allocated = false; 1425e05df3b1SJaegeuk Kim 14266fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 142723d38844SHaicheng Li return -1; 14289198acebSJaegeuk Kim 14299198acebSJaegeuk Kim /* 0 nid should not be used */ 1430cfb271d4SChao Yu if (unlikely(nid == 0)) 14319198acebSJaegeuk Kim return 0; 143259bbd474SJaegeuk Kim 14337bd59381SGu Zheng if (build) { 143459bbd474SJaegeuk Kim /* do not add allocated nids */ 14358b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 143659bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 14378a7ed66aSJaegeuk Kim if (ne && 14387ef35e3bSJaegeuk Kim (!get_nat_flag(ne, IS_CHECKPOINTED) || 14397ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 144059bbd474SJaegeuk Kim allocated = true; 14418b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 144259bbd474SJaegeuk Kim if (allocated) 144359bbd474SJaegeuk Kim return 0; 1444e05df3b1SJaegeuk Kim } 14457bd59381SGu Zheng 14467bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1447e05df3b1SJaegeuk Kim i->nid = nid; 1448e05df3b1SJaegeuk Kim i->state = NID_NEW; 1449e05df3b1SJaegeuk Kim 1450769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1451769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1452769ec6e5SJaegeuk Kim return 0; 1453769ec6e5SJaegeuk Kim } 1454769ec6e5SJaegeuk Kim 1455e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14568a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1457e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1458769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1459e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1460e05df3b1SJaegeuk Kim return 0; 1461e05df3b1SJaegeuk Kim } 1462e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1463e05df3b1SJaegeuk Kim nm_i->fcnt++; 1464e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1465769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1466e05df3b1SJaegeuk Kim return 1; 1467e05df3b1SJaegeuk Kim } 1468e05df3b1SJaegeuk Kim 1469e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1470e05df3b1SJaegeuk Kim { 1471e05df3b1SJaegeuk Kim struct free_nid *i; 1472cf0ee0f0SChao Yu bool need_free = false; 1473cf0ee0f0SChao Yu 1474e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 14758a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1476e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 14778a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1478e05df3b1SJaegeuk Kim nm_i->fcnt--; 1479cf0ee0f0SChao Yu need_free = true; 1480e05df3b1SJaegeuk Kim } 1481e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1482cf0ee0f0SChao Yu 1483cf0ee0f0SChao Yu if (need_free) 1484cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1485e05df3b1SJaegeuk Kim } 1486e05df3b1SJaegeuk Kim 14876fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1488e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1489e05df3b1SJaegeuk Kim { 14906fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1491e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1492e05df3b1SJaegeuk Kim block_t blk_addr; 1493e05df3b1SJaegeuk Kim int i; 1494e05df3b1SJaegeuk Kim 1495e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1496e05df3b1SJaegeuk Kim 1497e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 149823d38844SHaicheng Li 1499cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 150004431c44SJaegeuk Kim break; 150123d38844SHaicheng Li 1502e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 15039850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 150423d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 15056fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 150623d38844SHaicheng Li break; 150723d38844SHaicheng Li } 1508e05df3b1SJaegeuk Kim } 1509e05df3b1SJaegeuk Kim } 1510e05df3b1SJaegeuk Kim 1511e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1512e05df3b1SJaegeuk Kim { 1513e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1514e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1515e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 15168760952dSHaicheng Li int i = 0; 151755008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1518e05df3b1SJaegeuk Kim 151955008d84SJaegeuk Kim /* Enough entries */ 152055008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 152155008d84SJaegeuk Kim return; 1522e05df3b1SJaegeuk Kim 152355008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 1524662befdaSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT); 1525e05df3b1SJaegeuk Kim 1526e05df3b1SJaegeuk Kim while (1) { 1527e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1528e05df3b1SJaegeuk Kim 15296fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1530e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1531e05df3b1SJaegeuk Kim 1532e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1533cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1534e05df3b1SJaegeuk Kim nid = 0; 153555008d84SJaegeuk Kim 153655008d84SJaegeuk Kim if (i++ == FREE_NID_PAGES) 1537e05df3b1SJaegeuk Kim break; 1538e05df3b1SJaegeuk Kim } 1539e05df3b1SJaegeuk Kim 154055008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 154155008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1542e05df3b1SJaegeuk Kim 1543e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1544e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1545e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1546e05df3b1SJaegeuk Kim block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr); 1547e05df3b1SJaegeuk Kim nid = le32_to_cpu(nid_in_journal(sum, i)); 1548e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 15496fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1550e05df3b1SJaegeuk Kim else 1551e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1552e05df3b1SJaegeuk Kim } 1553e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1554e05df3b1SJaegeuk Kim } 1555e05df3b1SJaegeuk Kim 1556e05df3b1SJaegeuk Kim /* 1557e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1558e05df3b1SJaegeuk Kim * from second parameter of this function. 1559e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1560e05df3b1SJaegeuk Kim */ 1561e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1562e05df3b1SJaegeuk Kim { 1563e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1564e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1565e05df3b1SJaegeuk Kim retry: 15667ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1567e05df3b1SJaegeuk Kim return false; 1568e05df3b1SJaegeuk Kim 1569e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1570e05df3b1SJaegeuk Kim 157155008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1572f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 15739850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 15742d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1575e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1576e05df3b1SJaegeuk Kim break; 1577e05df3b1SJaegeuk Kim 15789850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1579e05df3b1SJaegeuk Kim *nid = i->nid; 1580e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1581e05df3b1SJaegeuk Kim nm_i->fcnt--; 1582e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1583e05df3b1SJaegeuk Kim return true; 1584e05df3b1SJaegeuk Kim } 158555008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 158655008d84SJaegeuk Kim 158755008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 158855008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 158955008d84SJaegeuk Kim build_free_nids(sbi); 159055008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 159155008d84SJaegeuk Kim goto retry; 159255008d84SJaegeuk Kim } 1593e05df3b1SJaegeuk Kim 15940a8165d7SJaegeuk Kim /* 1595e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1596e05df3b1SJaegeuk Kim */ 1597e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1598e05df3b1SJaegeuk Kim { 1599e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1600e05df3b1SJaegeuk Kim struct free_nid *i; 1601e05df3b1SJaegeuk Kim 1602e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16038a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16049850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16058a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1606e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1607cf0ee0f0SChao Yu 1608cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1609e05df3b1SJaegeuk Kim } 1610e05df3b1SJaegeuk Kim 16110a8165d7SJaegeuk Kim /* 1612e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1613e05df3b1SJaegeuk Kim */ 1614e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1615e05df3b1SJaegeuk Kim { 161649952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 161749952fa1SJaegeuk Kim struct free_nid *i; 1618cf0ee0f0SChao Yu bool need_free = false; 161949952fa1SJaegeuk Kim 162065985d93SJaegeuk Kim if (!nid) 162165985d93SJaegeuk Kim return; 162265985d93SJaegeuk Kim 162349952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 16248a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 16259850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 16266fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 16278a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1628cf0ee0f0SChao Yu need_free = true; 162995630cbaSHaicheng Li } else { 163049952fa1SJaegeuk Kim i->state = NID_NEW; 163149952fa1SJaegeuk Kim nm_i->fcnt++; 163295630cbaSHaicheng Li } 163349952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1634cf0ee0f0SChao Yu 1635cf0ee0f0SChao Yu if (need_free) 1636cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1637e05df3b1SJaegeuk Kim } 1638e05df3b1SJaegeuk Kim 163970cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 164028cdce04SChao Yu { 164128cdce04SChao Yu void *src_addr, *dst_addr; 164228cdce04SChao Yu size_t inline_size; 164328cdce04SChao Yu struct page *ipage; 164428cdce04SChao Yu struct f2fs_inode *ri; 164528cdce04SChao Yu 16464081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 16479850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 164828cdce04SChao Yu 1649e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1650e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 1651e3b4d43fSJaegeuk Kim clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); 1652e3b4d43fSJaegeuk Kim goto update_inode; 1653e3b4d43fSJaegeuk Kim } 1654e3b4d43fSJaegeuk Kim 165528cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 165628cdce04SChao Yu src_addr = inline_xattr_addr(page); 165728cdce04SChao Yu inline_size = inline_xattr_size(inode); 165828cdce04SChao Yu 165954b591dfSJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE); 166028cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1661e3b4d43fSJaegeuk Kim update_inode: 166228cdce04SChao Yu update_inode(inode, ipage); 166328cdce04SChao Yu f2fs_put_page(ipage, 1); 166428cdce04SChao Yu } 166528cdce04SChao Yu 16661c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1667abb2366cSJaegeuk Kim { 16684081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1669abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1670abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1671abb2366cSJaegeuk Kim struct node_info ni; 1672abb2366cSJaegeuk Kim 1673abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1674abb2366cSJaegeuk Kim if (!prev_xnid) 1675abb2366cSJaegeuk Kim goto recover_xnid; 1676abb2366cSJaegeuk Kim 1677abb2366cSJaegeuk Kim /* Deallocate node address */ 1678abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 16799850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1680abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1681abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1682479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1683abb2366cSJaegeuk Kim 1684abb2366cSJaegeuk Kim recover_xnid: 1685abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1686abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 16879850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1688abb2366cSJaegeuk Kim 1689abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1690abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1691abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1692479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1693abb2366cSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = new_xnid; 1694abb2366cSJaegeuk Kim 1695abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1696abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1697479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1698abb2366cSJaegeuk Kim 1699abb2366cSJaegeuk Kim update_inode_page(inode); 1700abb2366cSJaegeuk Kim } 1701abb2366cSJaegeuk Kim 1702e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 1703e05df3b1SJaegeuk Kim { 170458bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 1705e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 1706e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1707e05df3b1SJaegeuk Kim struct page *ipage; 1708e05df3b1SJaegeuk Kim 1709e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 1710e8271fa3SJaegeuk Kim 1711e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 1712e8271fa3SJaegeuk Kim return -EINVAL; 1713e8271fa3SJaegeuk Kim 17144ef51a8fSJaegeuk Kim ipage = grab_cache_page(NODE_MAPPING(sbi), ino); 1715e05df3b1SJaegeuk Kim if (!ipage) 1716e05df3b1SJaegeuk Kim return -ENOMEM; 1717e05df3b1SJaegeuk Kim 1718e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 1719e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 1720e05df3b1SJaegeuk Kim 1721e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 1722e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 1723e05df3b1SJaegeuk Kim 172458bfaf44SJaegeuk Kim src = F2FS_INODE(page); 172558bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 1726e05df3b1SJaegeuk Kim 172758bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 172858bfaf44SJaegeuk Kim dst->i_size = 0; 172958bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 173058bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 173158bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 1732617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 1733e05df3b1SJaegeuk Kim 1734e05df3b1SJaegeuk Kim new_ni = old_ni; 1735e05df3b1SJaegeuk Kim new_ni.ino = ino; 1736e05df3b1SJaegeuk Kim 1737cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 173865e5cd0aSJaegeuk Kim WARN_ON(1); 1739479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 1740e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1741617deb8cSJaegeuk Kim set_page_dirty(ipage); 1742e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 1743e05df3b1SJaegeuk Kim return 0; 1744e05df3b1SJaegeuk Kim } 1745e05df3b1SJaegeuk Kim 17469af0ff1cSChao Yu /* 17479af0ff1cSChao Yu * ra_sum_pages() merge contiguous pages into one bio and submit. 1748e1c42045Sarter97 * these pre-read pages are allocated in bd_inode's mapping tree. 17499af0ff1cSChao Yu */ 1750bac4eef6SChao Yu static int ra_sum_pages(struct f2fs_sb_info *sbi, struct page **pages, 17519af0ff1cSChao Yu int start, int nrpages) 17529af0ff1cSChao Yu { 1753bac4eef6SChao Yu struct inode *inode = sbi->sb->s_bdev->bd_inode; 1754bac4eef6SChao Yu struct address_space *mapping = inode->i_mapping; 1755bac4eef6SChao Yu int i, page_idx = start; 1756458e6197SJaegeuk Kim struct f2fs_io_info fio = { 1757458e6197SJaegeuk Kim .type = META, 17587e8f2308SGu Zheng .rw = READ_SYNC | REQ_META | REQ_PRIO 1759458e6197SJaegeuk Kim }; 17609af0ff1cSChao Yu 1761bac4eef6SChao Yu for (i = 0; page_idx < start + nrpages; page_idx++, i++) { 1762bac4eef6SChao Yu /* alloc page in bd_inode for reading node summary info */ 1763bac4eef6SChao Yu pages[i] = grab_cache_page(mapping, page_idx); 1764bac4eef6SChao Yu if (!pages[i]) 1765d653788aSGu Zheng break; 1766bac4eef6SChao Yu f2fs_submit_page_mbio(sbi, pages[i], page_idx, &fio); 17679af0ff1cSChao Yu } 17689af0ff1cSChao Yu 1769458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, META, READ); 1770bac4eef6SChao Yu return i; 17719af0ff1cSChao Yu } 17729af0ff1cSChao Yu 1773e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 1774e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 1775e05df3b1SJaegeuk Kim { 1776e05df3b1SJaegeuk Kim struct f2fs_node *rn; 1777e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 1778bac4eef6SChao Yu struct inode *inode = sbi->sb->s_bdev->bd_inode; 1779e05df3b1SJaegeuk Kim block_t addr; 178090a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 1781bac4eef6SChao Yu struct page *pages[bio_blocks]; 1782bac4eef6SChao Yu int i, idx, last_offset, nrpages, err = 0; 1783e05df3b1SJaegeuk Kim 1784e05df3b1SJaegeuk Kim /* scan the node segment */ 1785e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 1786e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 1787e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 1788e05df3b1SJaegeuk Kim 1789d653788aSGu Zheng for (i = 0; !err && i < last_offset; i += nrpages, addr += nrpages) { 17909af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 1791393ff91fSJaegeuk Kim 17929af0ff1cSChao Yu /* readahead node pages */ 1793bac4eef6SChao Yu nrpages = ra_sum_pages(sbi, pages, addr, nrpages); 1794d653788aSGu Zheng if (!nrpages) 1795d653788aSGu Zheng return -ENOMEM; 17969af0ff1cSChao Yu 1797bac4eef6SChao Yu for (idx = 0; idx < nrpages; idx++) { 1798d653788aSGu Zheng if (err) 1799d653788aSGu Zheng goto skip; 1800393ff91fSJaegeuk Kim 1801bac4eef6SChao Yu lock_page(pages[idx]); 1802bac4eef6SChao Yu if (unlikely(!PageUptodate(pages[idx]))) { 18036bacf52fSJaegeuk Kim err = -EIO; 18046bacf52fSJaegeuk Kim } else { 1805bac4eef6SChao Yu rn = F2FS_NODE(pages[idx]); 1806393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 1807393ff91fSJaegeuk Kim sum_entry->version = 0; 1808393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 18099af0ff1cSChao Yu sum_entry++; 1810e05df3b1SJaegeuk Kim } 1811bac4eef6SChao Yu unlock_page(pages[idx]); 1812d653788aSGu Zheng skip: 1813bac4eef6SChao Yu page_cache_release(pages[idx]); 18149af0ff1cSChao Yu } 1815bac4eef6SChao Yu 1816bac4eef6SChao Yu invalidate_mapping_pages(inode->i_mapping, addr, 1817bac4eef6SChao Yu addr + nrpages); 18189af0ff1cSChao Yu } 18199af0ff1cSChao Yu return err; 1820e05df3b1SJaegeuk Kim } 1821e05df3b1SJaegeuk Kim 1822aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 1823e05df3b1SJaegeuk Kim { 1824e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1825e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1826e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1827e05df3b1SJaegeuk Kim int i; 1828e05df3b1SJaegeuk Kim 1829e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1830e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1831e05df3b1SJaegeuk Kim struct nat_entry *ne; 1832e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 1833e05df3b1SJaegeuk Kim nid_t nid = le32_to_cpu(nid_in_journal(sum, i)); 1834e05df3b1SJaegeuk Kim 1835e05df3b1SJaegeuk Kim raw_ne = nat_in_journal(sum, i); 1836e05df3b1SJaegeuk Kim retry: 18378b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 1838e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1839aec71382SChao Yu if (ne) 1840aec71382SChao Yu goto found; 1841aec71382SChao Yu 1842e05df3b1SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 1843e05df3b1SJaegeuk Kim if (!ne) { 18448b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 1845e05df3b1SJaegeuk Kim goto retry; 1846e05df3b1SJaegeuk Kim } 184794dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 1848aec71382SChao Yu found: 1849e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 18508b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 1851e05df3b1SJaegeuk Kim } 1852e05df3b1SJaegeuk Kim update_nats_in_cursum(sum, -i); 1853e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1854e05df3b1SJaegeuk Kim } 1855e05df3b1SJaegeuk Kim 1856309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 1857309cc2b6SJaegeuk Kim struct list_head *head, int max) 1858e05df3b1SJaegeuk Kim { 1859309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 1860e05df3b1SJaegeuk Kim 1861309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 1862309cc2b6SJaegeuk Kim goto add_out; 1863e05df3b1SJaegeuk Kim 1864309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 1865309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 1866309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 1867309cc2b6SJaegeuk Kim return; 1868309cc2b6SJaegeuk Kim } 1869309cc2b6SJaegeuk Kim } 1870309cc2b6SJaegeuk Kim add_out: 1871309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 1872aec71382SChao Yu } 1873aec71382SChao Yu 1874309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 1875309cc2b6SJaegeuk Kim struct nat_entry_set *set) 1876309cc2b6SJaegeuk Kim { 1877309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1878309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1879309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 1880309cc2b6SJaegeuk Kim bool to_journal = true; 1881309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 1882309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 1883309cc2b6SJaegeuk Kim struct page *page = NULL; 1884aec71382SChao Yu 1885aec71382SChao Yu /* 1886aec71382SChao Yu * there are two steps to flush nat entries: 1887aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 1888aec71382SChao Yu * #2, flush nat entries to nat page. 1889aec71382SChao Yu */ 1890309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) 1891aec71382SChao Yu to_journal = false; 1892aec71382SChao Yu 1893aec71382SChao Yu if (to_journal) { 1894aec71382SChao Yu mutex_lock(&curseg->curseg_mutex); 1895aec71382SChao Yu } else { 1896e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 1897e05df3b1SJaegeuk Kim nat_blk = page_address(page); 18989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 1899e05df3b1SJaegeuk Kim } 1900e05df3b1SJaegeuk Kim 1901aec71382SChao Yu /* flush dirty nats in nat entry set */ 1902309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 1903aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 1904aec71382SChao Yu nid_t nid = nat_get_nid(ne); 1905aec71382SChao Yu int offset; 1906aec71382SChao Yu 1907309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 1908309cc2b6SJaegeuk Kim continue; 1909309cc2b6SJaegeuk Kim 1910aec71382SChao Yu if (to_journal) { 1911aec71382SChao Yu offset = lookup_journal_in_cursum(sum, 1912aec71382SChao Yu NAT_JOURNAL, nid, 1); 19139850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 1914aec71382SChao Yu raw_ne = &nat_in_journal(sum, offset); 1915aec71382SChao Yu nid_in_journal(sum, offset) = cpu_to_le32(nid); 1916aec71382SChao Yu } else { 1917aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 1918aec71382SChao Yu } 1919aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 1920aec71382SChao Yu 19218b26ef98SJaegeuk Kim down_write(&NM_I(sbi)->nat_tree_lock); 192288bd02c9SJaegeuk Kim nat_reset_flag(ne); 1923309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 19248b26ef98SJaegeuk Kim up_write(&NM_I(sbi)->nat_tree_lock); 1925309cc2b6SJaegeuk Kim 1926309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 1927309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 1928e05df3b1SJaegeuk Kim } 1929aec71382SChao Yu 1930aec71382SChao Yu if (to_journal) 1931e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1932aec71382SChao Yu else 1933e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1934aec71382SChao Yu 193580ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 193680ec2e91SChangman Lee 1937309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 1938309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 1939309cc2b6SJaegeuk Kim } 1940aec71382SChao Yu 1941309cc2b6SJaegeuk Kim /* 1942309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 1943309cc2b6SJaegeuk Kim */ 1944309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 1945309cc2b6SJaegeuk Kim { 1946309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1947309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1948309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1949309cc2b6SJaegeuk Kim struct nat_entry_set *setvec[NATVEC_SIZE]; 1950309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 1951309cc2b6SJaegeuk Kim unsigned int found; 1952309cc2b6SJaegeuk Kim nid_t set_idx = 0; 1953309cc2b6SJaegeuk Kim LIST_HEAD(sets); 1954309cc2b6SJaegeuk Kim 195520d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 195620d047c8SChangman Lee return; 1957309cc2b6SJaegeuk Kim /* 1958309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 1959309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 1960309cc2b6SJaegeuk Kim * into nat entry set. 1961309cc2b6SJaegeuk Kim */ 1962309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 1963309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 1964309cc2b6SJaegeuk Kim 1965309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 1966309cc2b6SJaegeuk Kim set_idx, NATVEC_SIZE, setvec))) { 1967309cc2b6SJaegeuk Kim unsigned idx; 1968309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 1969309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 1970309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 1971309cc2b6SJaegeuk Kim MAX_NAT_JENTRIES(sum)); 1972309cc2b6SJaegeuk Kim } 1973309cc2b6SJaegeuk Kim 1974309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 1975309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 1976309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 1977309cc2b6SJaegeuk Kim 19789850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 1979e05df3b1SJaegeuk Kim } 1980e05df3b1SJaegeuk Kim 1981e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 1982e05df3b1SJaegeuk Kim { 1983e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 1984e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1985e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 1986e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 1987e05df3b1SJaegeuk Kim 1988e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 1989e05df3b1SJaegeuk Kim 1990e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 1991e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 1992e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 1993b63da15eSJaegeuk Kim 19947ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 19957ee0eeabSJaegeuk Kim 1996b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 1997c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 1998e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 1999e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2000cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2001e05df3b1SJaegeuk Kim 20028a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2003e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 2004769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2005769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2006e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2007e05df3b1SJaegeuk Kim 2008e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2009e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 20108b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2011e05df3b1SJaegeuk Kim 2012e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 201379b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2014e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2015e05df3b1SJaegeuk Kim if (!version_bitmap) 2016e05df3b1SJaegeuk Kim return -EFAULT; 2017e05df3b1SJaegeuk Kim 201879b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 201979b5793bSAlexandru Gheorghiu GFP_KERNEL); 202079b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 202179b5793bSAlexandru Gheorghiu return -ENOMEM; 2022e05df3b1SJaegeuk Kim return 0; 2023e05df3b1SJaegeuk Kim } 2024e05df3b1SJaegeuk Kim 2025e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2026e05df3b1SJaegeuk Kim { 2027e05df3b1SJaegeuk Kim int err; 2028e05df3b1SJaegeuk Kim 2029e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2030e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2031e05df3b1SJaegeuk Kim return -ENOMEM; 2032e05df3b1SJaegeuk Kim 2033e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2034e05df3b1SJaegeuk Kim if (err) 2035e05df3b1SJaegeuk Kim return err; 2036e05df3b1SJaegeuk Kim 2037e05df3b1SJaegeuk Kim build_free_nids(sbi); 2038e05df3b1SJaegeuk Kim return 0; 2039e05df3b1SJaegeuk Kim } 2040e05df3b1SJaegeuk Kim 2041e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2042e05df3b1SJaegeuk Kim { 2043e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2044e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2045e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 2046e05df3b1SJaegeuk Kim nid_t nid = 0; 2047e05df3b1SJaegeuk Kim unsigned int found; 2048e05df3b1SJaegeuk Kim 2049e05df3b1SJaegeuk Kim if (!nm_i) 2050e05df3b1SJaegeuk Kim return; 2051e05df3b1SJaegeuk Kim 2052e05df3b1SJaegeuk Kim /* destroy free nid list */ 2053e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2054e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 20559850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 20568a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2057e05df3b1SJaegeuk Kim nm_i->fcnt--; 2058cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2059cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2060cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2061e05df3b1SJaegeuk Kim } 20629850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2063e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2064e05df3b1SJaegeuk Kim 2065e05df3b1SJaegeuk Kim /* destroy nat cache */ 20668b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2067e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2068e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2069e05df3b1SJaegeuk Kim unsigned idx; 2070b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2071b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2072b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2073e05df3b1SJaegeuk Kim } 20749850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 20758b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2076e05df3b1SJaegeuk Kim 2077e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2078e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2079e05df3b1SJaegeuk Kim kfree(nm_i); 2080e05df3b1SJaegeuk Kim } 2081e05df3b1SJaegeuk Kim 20826e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2083e05df3b1SJaegeuk Kim { 2084e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2085e8512d2eSGu Zheng sizeof(struct nat_entry)); 2086e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2087aec71382SChao Yu goto fail; 2088e05df3b1SJaegeuk Kim 2089e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2090e8512d2eSGu Zheng sizeof(struct free_nid)); 2091aec71382SChao Yu if (!free_nid_slab) 2092ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2093aec71382SChao Yu 2094aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2095aec71382SChao Yu sizeof(struct nat_entry_set)); 2096aec71382SChao Yu if (!nat_entry_set_slab) 2097ce3e6d25SMarkus Elfring goto destroy_free_nid; 2098e05df3b1SJaegeuk Kim return 0; 2099aec71382SChao Yu 2100ce3e6d25SMarkus Elfring destroy_free_nid: 2101aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2102ce3e6d25SMarkus Elfring destroy_nat_entry: 2103aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2104aec71382SChao Yu fail: 2105aec71382SChao Yu return -ENOMEM; 2106e05df3b1SJaegeuk Kim } 2107e05df3b1SJaegeuk Kim 2108e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2109e05df3b1SJaegeuk Kim { 2110aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2111e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2112e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2113e05df3b1SJaegeuk Kim } 2114