10a8165d7SJaegeuk Kim /* 2e05df3b1SJaegeuk Kim * fs/f2fs/node.c 3e05df3b1SJaegeuk Kim * 4e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5e05df3b1SJaegeuk Kim * http://www.samsung.com/ 6e05df3b1SJaegeuk Kim * 7e05df3b1SJaegeuk Kim * This program is free software; you can redistribute it and/or modify 8e05df3b1SJaegeuk Kim * it under the terms of the GNU General Public License version 2 as 9e05df3b1SJaegeuk Kim * published by the Free Software Foundation. 10e05df3b1SJaegeuk Kim */ 11e05df3b1SJaegeuk Kim #include <linux/fs.h> 12e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 13e05df3b1SJaegeuk Kim #include <linux/mpage.h> 14e05df3b1SJaegeuk Kim #include <linux/backing-dev.h> 15e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 16e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 17e05df3b1SJaegeuk Kim #include <linux/swap.h> 18e05df3b1SJaegeuk Kim 19e05df3b1SJaegeuk Kim #include "f2fs.h" 20e05df3b1SJaegeuk Kim #include "node.h" 21e05df3b1SJaegeuk Kim #include "segment.h" 229e4ded3fSJaegeuk Kim #include "trace.h" 2351dd6249SNamjae Jeon #include <trace/events/f2fs.h> 24e05df3b1SJaegeuk Kim 25f978f5a0SGu Zheng #define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) 26f978f5a0SGu Zheng 27e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 28e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 29aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 30e05df3b1SJaegeuk Kim 316fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 32cdfc41c1SJaegeuk Kim { 336fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 34cdfc41c1SJaegeuk Kim struct sysinfo val; 35e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 36cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 376fb03f3aSJaegeuk Kim bool res = false; 38cdfc41c1SJaegeuk Kim 39cdfc41c1SJaegeuk Kim si_meminfo(&val); 40e5e7ea3cSJaegeuk Kim 41e5e7ea3cSJaegeuk Kim /* only uses low memory */ 42e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 43e5e7ea3cSJaegeuk Kim 44429511cdSChao Yu /* 45429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 46429511cdSChao Yu */ 476fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 48e5e7ea3cSJaegeuk Kim mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 49e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 50e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 516fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 52e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 53e5e7ea3cSJaegeuk Kim PAGE_CACHE_SHIFT; 54e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 55a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 56a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 57a1257023SJaegeuk Kim return false; 58a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 59a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 60e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 61e5e7ea3cSJaegeuk Kim int i; 62e5e7ea3cSJaegeuk Kim 63e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6467298804SChao Yu mem_size += (sbi->im[i].ino_num * 6567298804SChao Yu sizeof(struct ino_entry)) >> PAGE_CACHE_SHIFT; 66e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 67429511cdSChao Yu } else if (type == EXTENT_CACHE) { 687441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 697441ccefSJaegeuk Kim sizeof(struct extent_tree) + 70429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 71429511cdSChao Yu sizeof(struct extent_node)) >> PAGE_CACHE_SHIFT; 72429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 731e84371fSJaegeuk Kim } else { 741663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 751663cae4SJaegeuk Kim return true; 766fb03f3aSJaegeuk Kim } 776fb03f3aSJaegeuk Kim return res; 78cdfc41c1SJaegeuk Kim } 79cdfc41c1SJaegeuk Kim 80e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 81e05df3b1SJaegeuk Kim { 82e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 83e05df3b1SJaegeuk Kim unsigned int long flags; 84e05df3b1SJaegeuk Kim 85e05df3b1SJaegeuk Kim if (PageDirty(page)) { 86e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 87e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 88e05df3b1SJaegeuk Kim page_index(page), 89e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 90e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 91e05df3b1SJaegeuk Kim 92e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 934081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 94e05df3b1SJaegeuk Kim } 95e05df3b1SJaegeuk Kim ClearPageUptodate(page); 96e05df3b1SJaegeuk Kim } 97e05df3b1SJaegeuk Kim 98e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 99e05df3b1SJaegeuk Kim { 100e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 101e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 102e05df3b1SJaegeuk Kim } 103e05df3b1SJaegeuk Kim 104e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 105e05df3b1SJaegeuk Kim { 106e05df3b1SJaegeuk Kim struct page *src_page; 107e05df3b1SJaegeuk Kim struct page *dst_page; 108e05df3b1SJaegeuk Kim pgoff_t src_off; 109e05df3b1SJaegeuk Kim pgoff_t dst_off; 110e05df3b1SJaegeuk Kim void *src_addr; 111e05df3b1SJaegeuk Kim void *dst_addr; 112e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 113e05df3b1SJaegeuk Kim 114e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 115e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 116e05df3b1SJaegeuk Kim 117e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 118e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 119e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 121e05df3b1SJaegeuk Kim 122e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 123e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 124e05df3b1SJaegeuk Kim memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); 125e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 126e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 127e05df3b1SJaegeuk Kim 128e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim return dst_page; 131e05df3b1SJaegeuk Kim } 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 134e05df3b1SJaegeuk Kim { 135e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 136e05df3b1SJaegeuk Kim } 137e05df3b1SJaegeuk Kim 138e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 139e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 140e05df3b1SJaegeuk Kim { 141e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 142e05df3b1SJaegeuk Kim } 143e05df3b1SJaegeuk Kim 144e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 145e05df3b1SJaegeuk Kim { 146e05df3b1SJaegeuk Kim list_del(&e->list); 147e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 148e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 149e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 150e05df3b1SJaegeuk Kim } 151e05df3b1SJaegeuk Kim 152309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 153309cc2b6SJaegeuk Kim struct nat_entry *ne) 154309cc2b6SJaegeuk Kim { 155309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 156309cc2b6SJaegeuk Kim struct nat_entry_set *head; 157309cc2b6SJaegeuk Kim 158309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 159309cc2b6SJaegeuk Kim return; 1609be32d72SJaegeuk Kim 161309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 162309cc2b6SJaegeuk Kim if (!head) { 16380c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 164309cc2b6SJaegeuk Kim 165309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 166309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 167309cc2b6SJaegeuk Kim head->set = set; 168309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1699be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 170309cc2b6SJaegeuk Kim } 171309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 172309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 173309cc2b6SJaegeuk Kim head->entry_cnt++; 174309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 175309cc2b6SJaegeuk Kim } 176309cc2b6SJaegeuk Kim 177309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 178309cc2b6SJaegeuk Kim struct nat_entry *ne) 179309cc2b6SJaegeuk Kim { 18020d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 181309cc2b6SJaegeuk Kim struct nat_entry_set *head; 182309cc2b6SJaegeuk Kim 183309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 184309cc2b6SJaegeuk Kim if (head) { 185309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 186309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 187309cc2b6SJaegeuk Kim head->entry_cnt--; 188309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 189309cc2b6SJaegeuk Kim } 190309cc2b6SJaegeuk Kim } 191309cc2b6SJaegeuk Kim 192309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 193309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 194309cc2b6SJaegeuk Kim { 195309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 196309cc2b6SJaegeuk Kim start, nr); 197309cc2b6SJaegeuk Kim } 198309cc2b6SJaegeuk Kim 1992dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2002dcf51abSJaegeuk Kim { 2012dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2022dcf51abSJaegeuk Kim struct nat_entry *e; 2032dcf51abSJaegeuk Kim bool need = false; 2042dcf51abSJaegeuk Kim 2052dcf51abSJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2062dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2072dcf51abSJaegeuk Kim if (e) { 2082dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2092dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2102dcf51abSJaegeuk Kim need = true; 2112dcf51abSJaegeuk Kim } 2122dcf51abSJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2132dcf51abSJaegeuk Kim return need; 2142dcf51abSJaegeuk Kim } 2152dcf51abSJaegeuk Kim 21688bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 217e05df3b1SJaegeuk Kim { 218e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 219e05df3b1SJaegeuk Kim struct nat_entry *e; 22088bd02c9SJaegeuk Kim bool is_cp = true; 221e05df3b1SJaegeuk Kim 2228b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 223e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2247ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22588bd02c9SJaegeuk Kim is_cp = false; 2268b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 227e05df3b1SJaegeuk Kim return is_cp; 228e05df3b1SJaegeuk Kim } 229e05df3b1SJaegeuk Kim 23088bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 231b6fe5873SJaegeuk Kim { 232b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 233b6fe5873SJaegeuk Kim struct nat_entry *e; 23488bd02c9SJaegeuk Kim bool need_update = true; 235b6fe5873SJaegeuk Kim 2368b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23788bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 23888bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23988bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24088bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24188bd02c9SJaegeuk Kim need_update = false; 2428b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24388bd02c9SJaegeuk Kim return need_update; 244b6fe5873SJaegeuk Kim } 245b6fe5873SJaegeuk Kim 246e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 247e05df3b1SJaegeuk Kim { 248e05df3b1SJaegeuk Kim struct nat_entry *new; 249e05df3b1SJaegeuk Kim 25080c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2519be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 252e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 253e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25488bd02c9SJaegeuk Kim nat_reset_flag(new); 255e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 256e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 257e05df3b1SJaegeuk Kim return new; 258e05df3b1SJaegeuk Kim } 259e05df3b1SJaegeuk Kim 260e05df3b1SJaegeuk Kim static void cache_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 261e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 262e05df3b1SJaegeuk Kim { 263e05df3b1SJaegeuk Kim struct nat_entry *e; 2649be32d72SJaegeuk Kim 265e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 266e05df3b1SJaegeuk Kim if (!e) { 267e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 26894dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 269e05df3b1SJaegeuk Kim } 270e05df3b1SJaegeuk Kim } 271e05df3b1SJaegeuk Kim 272e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 273479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 274e05df3b1SJaegeuk Kim { 275e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 276e05df3b1SJaegeuk Kim struct nat_entry *e; 2779be32d72SJaegeuk Kim 2788b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 279e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 280e05df3b1SJaegeuk Kim if (!e) { 281e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2825c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2839850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 284e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 285e05df3b1SJaegeuk Kim /* 286e05df3b1SJaegeuk Kim * when nid is reallocated, 287e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 288e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 289e05df3b1SJaegeuk Kim */ 2905c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2919850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 292e05df3b1SJaegeuk Kim } 293e05df3b1SJaegeuk Kim 294e05df3b1SJaegeuk Kim /* sanity check */ 2959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 2969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 297e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 2989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 299e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3009850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 301e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 302e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 303e05df3b1SJaegeuk Kim 304e1c42045Sarter97 /* increment version no as node is removed */ 305e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 306e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 307e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 30826834466SJaegeuk Kim 30926834466SJaegeuk Kim /* in order to reuse the nid */ 31026834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 31126834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 312e05df3b1SJaegeuk Kim } 313e05df3b1SJaegeuk Kim 314e05df3b1SJaegeuk Kim /* change address */ 315e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 31688bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 31788bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 318e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 319479f40c4SJaegeuk Kim 320479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 321d5b692b7SChao Yu if (ni->nid != ni->ino) 322479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 32388bd02c9SJaegeuk Kim if (e) { 32488bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 32588bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 32688bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 32788bd02c9SJaegeuk Kim } 3288b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 329e05df3b1SJaegeuk Kim } 330e05df3b1SJaegeuk Kim 3314660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 332e05df3b1SJaegeuk Kim { 333e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3341b38dc8eSJaegeuk Kim int nr = nr_shrink; 335e05df3b1SJaegeuk Kim 3361b38dc8eSJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 337e05df3b1SJaegeuk Kim return 0; 338e05df3b1SJaegeuk Kim 339e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 340e05df3b1SJaegeuk Kim struct nat_entry *ne; 341e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 342e05df3b1SJaegeuk Kim struct nat_entry, list); 343e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 344e05df3b1SJaegeuk Kim nr_shrink--; 345e05df3b1SJaegeuk Kim } 3468b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3471b38dc8eSJaegeuk Kim return nr - nr_shrink; 348e05df3b1SJaegeuk Kim } 349e05df3b1SJaegeuk Kim 3500a8165d7SJaegeuk Kim /* 351e1c42045Sarter97 * This function always returns success 352e05df3b1SJaegeuk Kim */ 353e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 354e05df3b1SJaegeuk Kim { 355e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 356e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 357e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 358e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 359e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 360e05df3b1SJaegeuk Kim struct page *page = NULL; 361e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 362e05df3b1SJaegeuk Kim struct nat_entry *e; 363e05df3b1SJaegeuk Kim int i; 364e05df3b1SJaegeuk Kim 365e05df3b1SJaegeuk Kim ni->nid = nid; 366e05df3b1SJaegeuk Kim 367e05df3b1SJaegeuk Kim /* Check nat cache */ 3688b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 369e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 370e05df3b1SJaegeuk Kim if (e) { 371e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 372e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 373e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 374e05df3b1SJaegeuk Kim } 3758b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 376e05df3b1SJaegeuk Kim if (e) 377e05df3b1SJaegeuk Kim return; 378e05df3b1SJaegeuk Kim 3793547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3803547ea96SJaegeuk Kim 381a5131193SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 382a5131193SJaegeuk Kim 383e05df3b1SJaegeuk Kim /* Check current segment summary */ 384e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 385e05df3b1SJaegeuk Kim i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0); 386e05df3b1SJaegeuk Kim if (i >= 0) { 387e05df3b1SJaegeuk Kim ne = nat_in_journal(sum, i); 388e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 389e05df3b1SJaegeuk Kim } 390e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 391e05df3b1SJaegeuk Kim if (i >= 0) 392e05df3b1SJaegeuk Kim goto cache; 393e05df3b1SJaegeuk Kim 394e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 395e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 396e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 397e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 398e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 399e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 400e05df3b1SJaegeuk Kim cache: 401e05df3b1SJaegeuk Kim /* cache nat entry */ 402e05df3b1SJaegeuk Kim cache_nat_entry(NM_I(sbi), nid, &ne); 403a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 404e05df3b1SJaegeuk Kim } 405e05df3b1SJaegeuk Kim 4063cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4073cf45747SChao Yu { 4083cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4093cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4103cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4113cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4123cf45747SChao Yu int cur_level = dn->cur_level; 4133cf45747SChao Yu int max_level = dn->max_level; 4143cf45747SChao Yu pgoff_t base = 0; 4153cf45747SChao Yu 4163cf45747SChao Yu if (!dn->max_level) 4173cf45747SChao Yu return pgofs + 1; 4183cf45747SChao Yu 4193cf45747SChao Yu while (max_level-- > cur_level) 4203cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4213cf45747SChao Yu 4223cf45747SChao Yu switch (dn->max_level) { 4233cf45747SChao Yu case 3: 4243cf45747SChao Yu base += 2 * indirect_blks; 4253cf45747SChao Yu case 2: 4263cf45747SChao Yu base += 2 * direct_blks; 4273cf45747SChao Yu case 1: 4283cf45747SChao Yu base += direct_index; 4293cf45747SChao Yu break; 4303cf45747SChao Yu default: 4313cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 4323cf45747SChao Yu } 4333cf45747SChao Yu 4343cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 4353cf45747SChao Yu } 4363cf45747SChao Yu 4370a8165d7SJaegeuk Kim /* 438e05df3b1SJaegeuk Kim * The maximum depth is four. 439e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 440e05df3b1SJaegeuk Kim */ 44181ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 442de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 443e05df3b1SJaegeuk Kim { 44481ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 445e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 446e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 447e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 448e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 449e05df3b1SJaegeuk Kim int n = 0; 450e05df3b1SJaegeuk Kim int level = 0; 451e05df3b1SJaegeuk Kim 452e05df3b1SJaegeuk Kim noffset[0] = 0; 453e05df3b1SJaegeuk Kim 454e05df3b1SJaegeuk Kim if (block < direct_index) { 45525c0a6e5SNamjae Jeon offset[n] = block; 456e05df3b1SJaegeuk Kim goto got; 457e05df3b1SJaegeuk Kim } 458e05df3b1SJaegeuk Kim block -= direct_index; 459e05df3b1SJaegeuk Kim if (block < direct_blks) { 460e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 461e05df3b1SJaegeuk Kim noffset[n] = 1; 46225c0a6e5SNamjae Jeon offset[n] = block; 463e05df3b1SJaegeuk Kim level = 1; 464e05df3b1SJaegeuk Kim goto got; 465e05df3b1SJaegeuk Kim } 466e05df3b1SJaegeuk Kim block -= direct_blks; 467e05df3b1SJaegeuk Kim if (block < direct_blks) { 468e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 469e05df3b1SJaegeuk Kim noffset[n] = 2; 47025c0a6e5SNamjae Jeon offset[n] = block; 471e05df3b1SJaegeuk Kim level = 1; 472e05df3b1SJaegeuk Kim goto got; 473e05df3b1SJaegeuk Kim } 474e05df3b1SJaegeuk Kim block -= direct_blks; 475e05df3b1SJaegeuk Kim if (block < indirect_blks) { 476e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 477e05df3b1SJaegeuk Kim noffset[n] = 3; 478e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 479e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 48025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 481e05df3b1SJaegeuk Kim level = 2; 482e05df3b1SJaegeuk Kim goto got; 483e05df3b1SJaegeuk Kim } 484e05df3b1SJaegeuk Kim block -= indirect_blks; 485e05df3b1SJaegeuk Kim if (block < indirect_blks) { 486e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 487e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 488e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 489e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 49025c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 491e05df3b1SJaegeuk Kim level = 2; 492e05df3b1SJaegeuk Kim goto got; 493e05df3b1SJaegeuk Kim } 494e05df3b1SJaegeuk Kim block -= indirect_blks; 495e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 496e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 497e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 498e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 499e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 500e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 501e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 502e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 503e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 504e05df3b1SJaegeuk Kim offset[n - 1]; 50525c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 506e05df3b1SJaegeuk Kim level = 3; 507e05df3b1SJaegeuk Kim goto got; 508e05df3b1SJaegeuk Kim } else { 509e05df3b1SJaegeuk Kim BUG(); 510e05df3b1SJaegeuk Kim } 511e05df3b1SJaegeuk Kim got: 512e05df3b1SJaegeuk Kim return level; 513e05df3b1SJaegeuk Kim } 514e05df3b1SJaegeuk Kim 515e05df3b1SJaegeuk Kim /* 516e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5174f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5184f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 51939936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 520e05df3b1SJaegeuk Kim */ 521266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 522e05df3b1SJaegeuk Kim { 5234081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 524e05df3b1SJaegeuk Kim struct page *npage[4]; 525f1a3b98eSJaegeuk Kim struct page *parent = NULL; 526e05df3b1SJaegeuk Kim int offset[4]; 527e05df3b1SJaegeuk Kim unsigned int noffset[4]; 528e05df3b1SJaegeuk Kim nid_t nids[4]; 5293cf45747SChao Yu int level, i = 0; 530e05df3b1SJaegeuk Kim int err = 0; 531e05df3b1SJaegeuk Kim 53281ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 533e05df3b1SJaegeuk Kim 534e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5351646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5361646cfacSJaegeuk Kim 5371646cfacSJaegeuk Kim if (!npage[0]) { 538e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 539e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 540e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5411646cfacSJaegeuk Kim } 542f1a3b98eSJaegeuk Kim 543f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 544f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 54576629165SJaegeuk Kim err = -ENOENT; 546f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 547f1a3b98eSJaegeuk Kim goto release_out; 548f1a3b98eSJaegeuk Kim } 549f1a3b98eSJaegeuk Kim 550e05df3b1SJaegeuk Kim parent = npage[0]; 55152c2db3fSChangman Lee if (level != 0) 552e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 553e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 554e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 555e05df3b1SJaegeuk Kim 556e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 557e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 558e05df3b1SJaegeuk Kim bool done = false; 559e05df3b1SJaegeuk Kim 560266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 561e05df3b1SJaegeuk Kim /* alloc new node */ 562e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 563e05df3b1SJaegeuk Kim err = -ENOSPC; 564e05df3b1SJaegeuk Kim goto release_pages; 565e05df3b1SJaegeuk Kim } 566e05df3b1SJaegeuk Kim 567e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5688ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 569e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 570e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 571e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 572e05df3b1SJaegeuk Kim goto release_pages; 573e05df3b1SJaegeuk Kim } 574e05df3b1SJaegeuk Kim 575e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 576e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 577e05df3b1SJaegeuk Kim done = true; 578266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 579e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 580e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 581e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 582e05df3b1SJaegeuk Kim goto release_pages; 583e05df3b1SJaegeuk Kim } 584e05df3b1SJaegeuk Kim done = true; 585e05df3b1SJaegeuk Kim } 586e05df3b1SJaegeuk Kim if (i == 1) { 587e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 588e05df3b1SJaegeuk Kim unlock_page(parent); 589e05df3b1SJaegeuk Kim } else { 590e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 591e05df3b1SJaegeuk Kim } 592e05df3b1SJaegeuk Kim 593e05df3b1SJaegeuk Kim if (!done) { 594e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 595e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 596e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 597e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 598e05df3b1SJaegeuk Kim goto release_out; 599e05df3b1SJaegeuk Kim } 600e05df3b1SJaegeuk Kim } 601e05df3b1SJaegeuk Kim if (i < level) { 602e05df3b1SJaegeuk Kim parent = npage[i]; 603e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 604e05df3b1SJaegeuk Kim } 605e05df3b1SJaegeuk Kim } 606e05df3b1SJaegeuk Kim dn->nid = nids[level]; 607e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 608e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 609e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 610e05df3b1SJaegeuk Kim return 0; 611e05df3b1SJaegeuk Kim 612e05df3b1SJaegeuk Kim release_pages: 613e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 614e05df3b1SJaegeuk Kim if (i > 1) 615e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 616e05df3b1SJaegeuk Kim release_out: 617e05df3b1SJaegeuk Kim dn->inode_page = NULL; 618e05df3b1SJaegeuk Kim dn->node_page = NULL; 6193cf45747SChao Yu if (err == -ENOENT) { 6203cf45747SChao Yu dn->cur_level = i; 6213cf45747SChao Yu dn->max_level = level; 6223cf45747SChao Yu } 623e05df3b1SJaegeuk Kim return err; 624e05df3b1SJaegeuk Kim } 625e05df3b1SJaegeuk Kim 626e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 627e05df3b1SJaegeuk Kim { 6284081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 629e05df3b1SJaegeuk Kim struct node_info ni; 630e05df3b1SJaegeuk Kim 631e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 63271e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 6339850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 63471e9fec5SJaegeuk Kim goto invalidate; 63571e9fec5SJaegeuk Kim } 6369850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 637e05df3b1SJaegeuk Kim 638e05df3b1SJaegeuk Kim /* Deallocate node address */ 63971e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 640ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 641479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 642e05df3b1SJaegeuk Kim 643e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 644e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 645e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 646e05df3b1SJaegeuk Kim } else { 647e05df3b1SJaegeuk Kim sync_inode_page(dn); 648e05df3b1SJaegeuk Kim } 64971e9fec5SJaegeuk Kim invalidate: 650e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 651caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 652e05df3b1SJaegeuk Kim 653e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 654bf39c00aSJaegeuk Kim 655bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 656bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 657bf39c00aSJaegeuk Kim 658e05df3b1SJaegeuk Kim dn->node_page = NULL; 65951dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 660e05df3b1SJaegeuk Kim } 661e05df3b1SJaegeuk Kim 662e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 663e05df3b1SJaegeuk Kim { 664e05df3b1SJaegeuk Kim struct page *page; 665e05df3b1SJaegeuk Kim 666e05df3b1SJaegeuk Kim if (dn->nid == 0) 667e05df3b1SJaegeuk Kim return 1; 668e05df3b1SJaegeuk Kim 669e05df3b1SJaegeuk Kim /* get direct node */ 6704081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 671e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 672e05df3b1SJaegeuk Kim return 1; 673e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 674e05df3b1SJaegeuk Kim return PTR_ERR(page); 675e05df3b1SJaegeuk Kim 676e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 677e05df3b1SJaegeuk Kim dn->node_page = page; 678e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 679e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 680e05df3b1SJaegeuk Kim truncate_node(dn); 681e05df3b1SJaegeuk Kim return 1; 682e05df3b1SJaegeuk Kim } 683e05df3b1SJaegeuk Kim 684e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 685e05df3b1SJaegeuk Kim int ofs, int depth) 686e05df3b1SJaegeuk Kim { 687e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 688e05df3b1SJaegeuk Kim struct page *page; 689e05df3b1SJaegeuk Kim struct f2fs_node *rn; 690e05df3b1SJaegeuk Kim nid_t child_nid; 691e05df3b1SJaegeuk Kim unsigned int child_nofs; 692e05df3b1SJaegeuk Kim int freed = 0; 693e05df3b1SJaegeuk Kim int i, ret; 694e05df3b1SJaegeuk Kim 695e05df3b1SJaegeuk Kim if (dn->nid == 0) 696e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 697e05df3b1SJaegeuk Kim 69851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 69951dd6249SNamjae Jeon 7004081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 70151dd6249SNamjae Jeon if (IS_ERR(page)) { 70251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 703e05df3b1SJaegeuk Kim return PTR_ERR(page); 70451dd6249SNamjae Jeon } 705e05df3b1SJaegeuk Kim 70645590710SGu Zheng rn = F2FS_NODE(page); 707e05df3b1SJaegeuk Kim if (depth < 3) { 708e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 709e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 710e05df3b1SJaegeuk Kim if (child_nid == 0) 711e05df3b1SJaegeuk Kim continue; 712e05df3b1SJaegeuk Kim rdn.nid = child_nid; 713e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 714e05df3b1SJaegeuk Kim if (ret < 0) 715e05df3b1SJaegeuk Kim goto out_err; 71612719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 71793bae099SJaegeuk Kim dn->node_changed = true; 718e05df3b1SJaegeuk Kim } 719e05df3b1SJaegeuk Kim } else { 720e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 721e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 722e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 723e05df3b1SJaegeuk Kim if (child_nid == 0) { 724e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 725e05df3b1SJaegeuk Kim continue; 726e05df3b1SJaegeuk Kim } 727e05df3b1SJaegeuk Kim rdn.nid = child_nid; 728e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 729e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 73012719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 73193bae099SJaegeuk Kim dn->node_changed = true; 732e05df3b1SJaegeuk Kim child_nofs += ret; 733e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 734e05df3b1SJaegeuk Kim goto out_err; 735e05df3b1SJaegeuk Kim } 736e05df3b1SJaegeuk Kim } 737e05df3b1SJaegeuk Kim freed = child_nofs; 738e05df3b1SJaegeuk Kim } 739e05df3b1SJaegeuk Kim 740e05df3b1SJaegeuk Kim if (!ofs) { 741e05df3b1SJaegeuk Kim /* remove current indirect node */ 742e05df3b1SJaegeuk Kim dn->node_page = page; 743e05df3b1SJaegeuk Kim truncate_node(dn); 744e05df3b1SJaegeuk Kim freed++; 745e05df3b1SJaegeuk Kim } else { 746e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 747e05df3b1SJaegeuk Kim } 74851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 749e05df3b1SJaegeuk Kim return freed; 750e05df3b1SJaegeuk Kim 751e05df3b1SJaegeuk Kim out_err: 752e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 75351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 754e05df3b1SJaegeuk Kim return ret; 755e05df3b1SJaegeuk Kim } 756e05df3b1SJaegeuk Kim 757e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 758e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 759e05df3b1SJaegeuk Kim { 760e05df3b1SJaegeuk Kim struct page *pages[2]; 761e05df3b1SJaegeuk Kim nid_t nid[3]; 762e05df3b1SJaegeuk Kim nid_t child_nid; 763e05df3b1SJaegeuk Kim int err = 0; 764e05df3b1SJaegeuk Kim int i; 765e05df3b1SJaegeuk Kim int idx = depth - 2; 766e05df3b1SJaegeuk Kim 767e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 768e05df3b1SJaegeuk Kim if (!nid[0]) 769e05df3b1SJaegeuk Kim return 0; 770e05df3b1SJaegeuk Kim 771e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 772a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 773e1c42045Sarter97 /* reference count'll be increased */ 7744081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 775e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 776e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 777a225dca3Sshifei10.ge idx = i - 1; 778e05df3b1SJaegeuk Kim goto fail; 779e05df3b1SJaegeuk Kim } 780e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 781e05df3b1SJaegeuk Kim } 782e05df3b1SJaegeuk Kim 783e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 784a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 785e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 786e05df3b1SJaegeuk Kim if (!child_nid) 787e05df3b1SJaegeuk Kim continue; 788e05df3b1SJaegeuk Kim dn->nid = child_nid; 789e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 790e05df3b1SJaegeuk Kim if (err < 0) 791e05df3b1SJaegeuk Kim goto fail; 79212719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 79393bae099SJaegeuk Kim dn->node_changed = true; 794e05df3b1SJaegeuk Kim } 795e05df3b1SJaegeuk Kim 796a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 797e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 798e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 799e05df3b1SJaegeuk Kim truncate_node(dn); 800e05df3b1SJaegeuk Kim } else { 801e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 802e05df3b1SJaegeuk Kim } 803e05df3b1SJaegeuk Kim offset[idx]++; 804a225dca3Sshifei10.ge offset[idx + 1] = 0; 805a225dca3Sshifei10.ge idx--; 806e05df3b1SJaegeuk Kim fail: 807a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 808e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 80951dd6249SNamjae Jeon 81051dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 81151dd6249SNamjae Jeon 812e05df3b1SJaegeuk Kim return err; 813e05df3b1SJaegeuk Kim } 814e05df3b1SJaegeuk Kim 8150a8165d7SJaegeuk Kim /* 816e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 817e05df3b1SJaegeuk Kim */ 818e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 819e05df3b1SJaegeuk Kim { 8204081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 821e05df3b1SJaegeuk Kim int err = 0, cont = 1; 822e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8237dd690c8SJaegeuk Kim unsigned int nofs = 0; 82458bfaf44SJaegeuk Kim struct f2fs_inode *ri; 825e05df3b1SJaegeuk Kim struct dnode_of_data dn; 826e05df3b1SJaegeuk Kim struct page *page; 827e05df3b1SJaegeuk Kim 82851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 82951dd6249SNamjae Jeon 83081ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 831afcb7ca0SJaegeuk Kim restart: 832e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 83351dd6249SNamjae Jeon if (IS_ERR(page)) { 83451dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 835e05df3b1SJaegeuk Kim return PTR_ERR(page); 83651dd6249SNamjae Jeon } 837e05df3b1SJaegeuk Kim 838e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 839e05df3b1SJaegeuk Kim unlock_page(page); 840e05df3b1SJaegeuk Kim 84158bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 842e05df3b1SJaegeuk Kim switch (level) { 843e05df3b1SJaegeuk Kim case 0: 844e05df3b1SJaegeuk Kim case 1: 845e05df3b1SJaegeuk Kim nofs = noffset[1]; 846e05df3b1SJaegeuk Kim break; 847e05df3b1SJaegeuk Kim case 2: 848e05df3b1SJaegeuk Kim nofs = noffset[1]; 849e05df3b1SJaegeuk Kim if (!offset[level - 1]) 850e05df3b1SJaegeuk Kim goto skip_partial; 85158bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 852e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 853e05df3b1SJaegeuk Kim goto fail; 854e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 855e05df3b1SJaegeuk Kim break; 856e05df3b1SJaegeuk Kim case 3: 857e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 858e05df3b1SJaegeuk Kim if (!offset[level - 1]) 859e05df3b1SJaegeuk Kim goto skip_partial; 86058bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 861e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 862e05df3b1SJaegeuk Kim goto fail; 863e05df3b1SJaegeuk Kim break; 864e05df3b1SJaegeuk Kim default: 865e05df3b1SJaegeuk Kim BUG(); 866e05df3b1SJaegeuk Kim } 867e05df3b1SJaegeuk Kim 868e05df3b1SJaegeuk Kim skip_partial: 869e05df3b1SJaegeuk Kim while (cont) { 87058bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 871e05df3b1SJaegeuk Kim switch (offset[0]) { 872e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 873e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 874e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 875e05df3b1SJaegeuk Kim break; 876e05df3b1SJaegeuk Kim 877e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 878e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 879e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 880e05df3b1SJaegeuk Kim break; 881e05df3b1SJaegeuk Kim 882e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 883e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 884e05df3b1SJaegeuk Kim cont = 0; 885e05df3b1SJaegeuk Kim break; 886e05df3b1SJaegeuk Kim 887e05df3b1SJaegeuk Kim default: 888e05df3b1SJaegeuk Kim BUG(); 889e05df3b1SJaegeuk Kim } 890e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 891e05df3b1SJaegeuk Kim goto fail; 892e05df3b1SJaegeuk Kim if (offset[1] == 0 && 89358bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 894e05df3b1SJaegeuk Kim lock_page(page); 8954ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 896afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 897afcb7ca0SJaegeuk Kim goto restart; 898afcb7ca0SJaegeuk Kim } 899fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 90058bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 901e05df3b1SJaegeuk Kim set_page_dirty(page); 902e05df3b1SJaegeuk Kim unlock_page(page); 903e05df3b1SJaegeuk Kim } 904e05df3b1SJaegeuk Kim offset[1] = 0; 905e05df3b1SJaegeuk Kim offset[0]++; 906e05df3b1SJaegeuk Kim nofs += err; 907e05df3b1SJaegeuk Kim } 908e05df3b1SJaegeuk Kim fail: 909e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 91051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 911e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 912e05df3b1SJaegeuk Kim } 913e05df3b1SJaegeuk Kim 9144f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 9154f16fb0fSJaegeuk Kim { 9164081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9174f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9184f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9194f16fb0fSJaegeuk Kim struct page *npage; 9204f16fb0fSJaegeuk Kim 9214f16fb0fSJaegeuk Kim if (!nid) 9224f16fb0fSJaegeuk Kim return 0; 9234f16fb0fSJaegeuk Kim 9244f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9254f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9264f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9274f16fb0fSJaegeuk Kim 9284f16fb0fSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = 0; 92965985d93SJaegeuk Kim 93065985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 93165985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 93265985d93SJaegeuk Kim 9334f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 9344f16fb0fSJaegeuk Kim 9354f16fb0fSJaegeuk Kim if (page) 93601d2d1aaSChao Yu dn.inode_page_locked = true; 9374f16fb0fSJaegeuk Kim truncate_node(&dn); 9384f16fb0fSJaegeuk Kim return 0; 9394f16fb0fSJaegeuk Kim } 9404f16fb0fSJaegeuk Kim 94139936837SJaegeuk Kim /* 9424f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9434f4124d0SChao Yu * f2fs_unlock_op(). 94439936837SJaegeuk Kim */ 94513ec7297SChao Yu int remove_inode_page(struct inode *inode) 946e05df3b1SJaegeuk Kim { 947e05df3b1SJaegeuk Kim struct dnode_of_data dn; 94813ec7297SChao Yu int err; 949e05df3b1SJaegeuk Kim 950c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 95113ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 95213ec7297SChao Yu if (err) 95313ec7297SChao Yu return err; 954e05df3b1SJaegeuk Kim 95513ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 95613ec7297SChao Yu if (err) { 957c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 95813ec7297SChao Yu return err; 959e05df3b1SJaegeuk Kim } 960c2e69583SJaegeuk Kim 961c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 962c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 963c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 964c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 965c2e69583SJaegeuk Kim 966e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9679850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9689850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 969c2e69583SJaegeuk Kim 970c2e69583SJaegeuk Kim /* will put inode & node pages */ 971e05df3b1SJaegeuk Kim truncate_node(&dn); 97213ec7297SChao Yu return 0; 973e05df3b1SJaegeuk Kim } 974e05df3b1SJaegeuk Kim 975a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 976e05df3b1SJaegeuk Kim { 977e05df3b1SJaegeuk Kim struct dnode_of_data dn; 978e05df3b1SJaegeuk Kim 979e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 980e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 98144a83ff6SJaegeuk Kim 98244a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 9838ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 984e05df3b1SJaegeuk Kim } 985e05df3b1SJaegeuk Kim 9868ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 9878ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 988e05df3b1SJaegeuk Kim { 9894081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 990e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 991e05df3b1SJaegeuk Kim struct page *page; 992e05df3b1SJaegeuk Kim int err; 993e05df3b1SJaegeuk Kim 9946bacf52fSJaegeuk Kim if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) 995e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 996e05df3b1SJaegeuk Kim 99754b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), dn->nid); 998e05df3b1SJaegeuk Kim if (!page) 999e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1000e05df3b1SJaegeuk Kim 10016bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 10029c02740cSJaegeuk Kim err = -ENOSPC; 10039c02740cSJaegeuk Kim goto fail; 10049c02740cSJaegeuk Kim } 1005e05df3b1SJaegeuk Kim 10069c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 1007e05df3b1SJaegeuk Kim 1008e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 10099850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 1010e05df3b1SJaegeuk Kim new_ni = old_ni; 1011e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 1012479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10139c02740cSJaegeuk Kim 1014fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10159c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1016398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 10179c02740cSJaegeuk Kim SetPageUptodate(page); 101812719ae1SJaegeuk Kim if (set_page_dirty(page)) 101912719ae1SJaegeuk Kim dn->node_changed = true; 1020e05df3b1SJaegeuk Kim 10214bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1022479bd73aSJaegeuk Kim F2FS_I(dn->inode)->i_xattr_nid = dn->nid; 1023479bd73aSJaegeuk Kim 1024e05df3b1SJaegeuk Kim dn->node_page = page; 10258ae8f162SJaegeuk Kim if (ipage) 10268ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 10278ae8f162SJaegeuk Kim else 1028e05df3b1SJaegeuk Kim sync_inode_page(dn); 1029e05df3b1SJaegeuk Kim if (ofs == 0) 1030e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1031e05df3b1SJaegeuk Kim 1032e05df3b1SJaegeuk Kim return page; 1033e05df3b1SJaegeuk Kim 1034e05df3b1SJaegeuk Kim fail: 103571e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1036e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1037e05df3b1SJaegeuk Kim return ERR_PTR(err); 1038e05df3b1SJaegeuk Kim } 1039e05df3b1SJaegeuk Kim 104056ae674cSJaegeuk Kim /* 104156ae674cSJaegeuk Kim * Caller should do after getting the following values. 104256ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 104386531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 104456ae674cSJaegeuk Kim */ 104593dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 1046e05df3b1SJaegeuk Kim { 10474081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1048e05df3b1SJaegeuk Kim struct node_info ni; 1049cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 105005ca3632SJaegeuk Kim .sbi = sbi, 1051cf04e8ebSJaegeuk Kim .type = NODE, 1052cf04e8ebSJaegeuk Kim .rw = rw, 105305ca3632SJaegeuk Kim .page = page, 10544375a336SJaegeuk Kim .encrypted_page = NULL, 1055cf04e8ebSJaegeuk Kim }; 1056e05df3b1SJaegeuk Kim 1057e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1058e05df3b1SJaegeuk Kim 10596bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10602bca1e23SJaegeuk Kim ClearPageUptodate(page); 1061e05df3b1SJaegeuk Kim return -ENOENT; 1062393ff91fSJaegeuk Kim } 1063393ff91fSJaegeuk Kim 106456ae674cSJaegeuk Kim if (PageUptodate(page)) 106556ae674cSJaegeuk Kim return LOCKED_PAGE; 1066393ff91fSJaegeuk Kim 1067cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 106805ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1069e05df3b1SJaegeuk Kim } 1070e05df3b1SJaegeuk Kim 10710a8165d7SJaegeuk Kim /* 1072e05df3b1SJaegeuk Kim * Readahead a node page 1073e05df3b1SJaegeuk Kim */ 1074e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1075e05df3b1SJaegeuk Kim { 1076e05df3b1SJaegeuk Kim struct page *apage; 107756ae674cSJaegeuk Kim int err; 1078e05df3b1SJaegeuk Kim 1079e8458725SChao Yu if (!nid) 1080e8458725SChao Yu return; 1081e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1082e8458725SChao Yu 10834ef51a8fSJaegeuk Kim apage = find_get_page(NODE_MAPPING(sbi), nid); 1084393ff91fSJaegeuk Kim if (apage && PageUptodate(apage)) { 1085393ff91fSJaegeuk Kim f2fs_put_page(apage, 0); 1086393ff91fSJaegeuk Kim return; 1087393ff91fSJaegeuk Kim } 1088e05df3b1SJaegeuk Kim f2fs_put_page(apage, 0); 1089e05df3b1SJaegeuk Kim 10904ef51a8fSJaegeuk Kim apage = grab_cache_page(NODE_MAPPING(sbi), nid); 1091e05df3b1SJaegeuk Kim if (!apage) 1092e05df3b1SJaegeuk Kim return; 1093e05df3b1SJaegeuk Kim 109456ae674cSJaegeuk Kim err = read_node_page(apage, READA); 109586531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1096e05df3b1SJaegeuk Kim } 1097e05df3b1SJaegeuk Kim 10980e022ea8SChao Yu /* 10990e022ea8SChao Yu * readahead MAX_RA_NODE number of node pages. 11000e022ea8SChao Yu */ 11010e022ea8SChao Yu void ra_node_pages(struct page *parent, int start) 11020e022ea8SChao Yu { 11030e022ea8SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11040e022ea8SChao Yu struct blk_plug plug; 11050e022ea8SChao Yu int i, end; 11060e022ea8SChao Yu nid_t nid; 11070e022ea8SChao Yu 11080e022ea8SChao Yu blk_start_plug(&plug); 11090e022ea8SChao Yu 11100e022ea8SChao Yu /* Then, try readahead for siblings of the desired node */ 11110e022ea8SChao Yu end = start + MAX_RA_NODE; 11120e022ea8SChao Yu end = min(end, NIDS_PER_BLOCK); 11130e022ea8SChao Yu for (i = start; i < end; i++) { 11140e022ea8SChao Yu nid = get_nid(parent, i, false); 11150e022ea8SChao Yu ra_node_page(sbi, nid); 11160e022ea8SChao Yu } 11170e022ea8SChao Yu 11180e022ea8SChao Yu blk_finish_plug(&plug); 11190e022ea8SChao Yu } 11200e022ea8SChao Yu 11210e022ea8SChao Yu struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11220e022ea8SChao Yu struct page *parent, int start) 1123e05df3b1SJaegeuk Kim { 112456ae674cSJaegeuk Kim struct page *page; 112556ae674cSJaegeuk Kim int err; 11264aa69d56SJaegeuk Kim 11274aa69d56SJaegeuk Kim if (!nid) 11284aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11294aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1130afcb7ca0SJaegeuk Kim repeat: 113154b591dfSJaegeuk Kim page = grab_cache_page(NODE_MAPPING(sbi), nid); 1132e05df3b1SJaegeuk Kim if (!page) 1133e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1134e05df3b1SJaegeuk Kim 1135e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 113686531d6bSJaegeuk Kim if (err < 0) { 113786531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1138e05df3b1SJaegeuk Kim return ERR_PTR(err); 1139e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 1140e1c51b9fSChao Yu goto page_hit; 114186531d6bSJaegeuk Kim } 1142aaf96075SJaegeuk Kim 11430e022ea8SChao Yu if (parent) 11440e022ea8SChao Yu ra_node_pages(parent, start + 1); 11450e022ea8SChao Yu 1146e1c51b9fSChao Yu lock_page(page); 1147e1c51b9fSChao Yu 1148e1c51b9fSChao Yu if (unlikely(!PageUptodate(page))) { 1149393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1150393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1151393ff91fSJaegeuk Kim } 11524ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1153afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1154afcb7ca0SJaegeuk Kim goto repeat; 1155afcb7ca0SJaegeuk Kim } 1156e1c51b9fSChao Yu page_hit: 1157e1c51b9fSChao Yu f2fs_bug_on(sbi, nid != nid_of_node(page)); 1158e05df3b1SJaegeuk Kim return page; 1159e05df3b1SJaegeuk Kim } 1160e05df3b1SJaegeuk Kim 11610e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11620e022ea8SChao Yu { 11630e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11640e022ea8SChao Yu } 11650e022ea8SChao Yu 1166e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1167e05df3b1SJaegeuk Kim { 11684081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11690e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1170e05df3b1SJaegeuk Kim 11710e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1172e05df3b1SJaegeuk Kim } 1173e05df3b1SJaegeuk Kim 1174e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1175e05df3b1SJaegeuk Kim { 117612719ae1SJaegeuk Kim int ret = 0; 117712719ae1SJaegeuk Kim 1178e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 117912719ae1SJaegeuk Kim ret = update_inode(dn->inode, dn->node_page); 1180e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1181e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1182e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 118312719ae1SJaegeuk Kim ret = update_inode(dn->inode, dn->inode_page); 1184e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1185e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1186e05df3b1SJaegeuk Kim } else { 118712719ae1SJaegeuk Kim ret = update_inode_page(dn->inode); 1188e05df3b1SJaegeuk Kim } 118912719ae1SJaegeuk Kim dn->node_changed = ret ? true: false; 1190e05df3b1SJaegeuk Kim } 1191e05df3b1SJaegeuk Kim 11922049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 11932049d4fcSJaegeuk Kim { 11942049d4fcSJaegeuk Kim struct inode *inode; 11952049d4fcSJaegeuk Kim struct page *page; 11962049d4fcSJaegeuk Kim 11972049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 11982049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 11992049d4fcSJaegeuk Kim if (!inode) 12002049d4fcSJaegeuk Kim return; 12012049d4fcSJaegeuk Kim 12022049d4fcSJaegeuk Kim page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); 12032049d4fcSJaegeuk Kim if (!page) 12042049d4fcSJaegeuk Kim goto iput_out; 12052049d4fcSJaegeuk Kim 12062049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12072049d4fcSJaegeuk Kim goto page_out; 12082049d4fcSJaegeuk Kim 12092049d4fcSJaegeuk Kim if (!PageDirty(page)) 12102049d4fcSJaegeuk Kim goto page_out; 12112049d4fcSJaegeuk Kim 12122049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12132049d4fcSJaegeuk Kim goto page_out; 12142049d4fcSJaegeuk Kim 12152049d4fcSJaegeuk Kim if (!f2fs_write_inline_data(inode, page)) 12162049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 12172049d4fcSJaegeuk Kim else 12182049d4fcSJaegeuk Kim set_page_dirty(page); 12192049d4fcSJaegeuk Kim page_out: 12202049d4fcSJaegeuk Kim f2fs_put_page(page, 1); 12212049d4fcSJaegeuk Kim iput_out: 12222049d4fcSJaegeuk Kim iput(inode); 12232049d4fcSJaegeuk Kim } 12242049d4fcSJaegeuk Kim 1225e05df3b1SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1226e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1227e05df3b1SJaegeuk Kim { 1228e05df3b1SJaegeuk Kim pgoff_t index, end; 1229e05df3b1SJaegeuk Kim struct pagevec pvec; 1230e05df3b1SJaegeuk Kim int step = ino ? 2 : 0; 1231e05df3b1SJaegeuk Kim int nwritten = 0, wrote = 0; 1232e05df3b1SJaegeuk Kim 1233e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1234e05df3b1SJaegeuk Kim 1235e05df3b1SJaegeuk Kim next_step: 1236e05df3b1SJaegeuk Kim index = 0; 1237e05df3b1SJaegeuk Kim end = LONG_MAX; 1238e05df3b1SJaegeuk Kim 1239e05df3b1SJaegeuk Kim while (index <= end) { 1240e05df3b1SJaegeuk Kim int i, nr_pages; 12414ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1242e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1243e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1244e05df3b1SJaegeuk Kim if (nr_pages == 0) 1245e05df3b1SJaegeuk Kim break; 1246e05df3b1SJaegeuk Kim 1247e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1248e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1249e05df3b1SJaegeuk Kim 12506d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 12516d5a1495SChao Yu pagevec_release(&pvec); 12526d5a1495SChao Yu return -EIO; 12536d5a1495SChao Yu } 12546d5a1495SChao Yu 1255e05df3b1SJaegeuk Kim /* 1256e05df3b1SJaegeuk Kim * flushing sequence with step: 1257e05df3b1SJaegeuk Kim * 0. indirect nodes 1258e05df3b1SJaegeuk Kim * 1. dentry dnodes 1259e05df3b1SJaegeuk Kim * 2. file dnodes 1260e05df3b1SJaegeuk Kim */ 1261e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1262e05df3b1SJaegeuk Kim continue; 1263e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1264e05df3b1SJaegeuk Kim is_cold_node(page))) 1265e05df3b1SJaegeuk Kim continue; 1266e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1267e05df3b1SJaegeuk Kim !is_cold_node(page))) 1268e05df3b1SJaegeuk Kim continue; 1269e05df3b1SJaegeuk Kim 1270e05df3b1SJaegeuk Kim /* 1271e05df3b1SJaegeuk Kim * If an fsync mode, 1272e05df3b1SJaegeuk Kim * we should not skip writing node pages. 1273e05df3b1SJaegeuk Kim */ 1274e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) == ino) 1275e05df3b1SJaegeuk Kim lock_page(page); 1276e05df3b1SJaegeuk Kim else if (!trylock_page(page)) 1277e05df3b1SJaegeuk Kim continue; 1278e05df3b1SJaegeuk Kim 12794ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1280e05df3b1SJaegeuk Kim continue_unlock: 1281e05df3b1SJaegeuk Kim unlock_page(page); 1282e05df3b1SJaegeuk Kim continue; 1283e05df3b1SJaegeuk Kim } 1284e05df3b1SJaegeuk Kim if (ino && ino_of_node(page) != ino) 1285e05df3b1SJaegeuk Kim goto continue_unlock; 1286e05df3b1SJaegeuk Kim 1287e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1288e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1289e05df3b1SJaegeuk Kim goto continue_unlock; 1290e05df3b1SJaegeuk Kim } 1291e05df3b1SJaegeuk Kim 12922049d4fcSJaegeuk Kim /* flush inline_data */ 12932049d4fcSJaegeuk Kim if (!ino && is_inline_node(page)) { 12942049d4fcSJaegeuk Kim clear_inline_node(page); 12952049d4fcSJaegeuk Kim unlock_page(page); 12962049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 12972049d4fcSJaegeuk Kim continue; 12982049d4fcSJaegeuk Kim } 12992049d4fcSJaegeuk Kim 1300fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1301fa3d2bdfSJaegeuk Kim 1302fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1303e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1304e05df3b1SJaegeuk Kim goto continue_unlock; 1305e05df3b1SJaegeuk Kim 1306e05df3b1SJaegeuk Kim /* called by fsync() */ 1307e05df3b1SJaegeuk Kim if (ino && IS_DNODE(page)) { 1308e05df3b1SJaegeuk Kim set_fsync_mark(page, 1); 13092dcf51abSJaegeuk Kim if (IS_INODE(page)) 13102dcf51abSJaegeuk Kim set_dentry_mark(page, 13112dcf51abSJaegeuk Kim need_dentry_mark(sbi, ino)); 1312e05df3b1SJaegeuk Kim nwritten++; 1313e05df3b1SJaegeuk Kim } else { 1314e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1315e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 1316e05df3b1SJaegeuk Kim } 131752746519SJaegeuk Kim 131852746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 131952746519SJaegeuk Kim unlock_page(page); 132052746519SJaegeuk Kim else 1321e05df3b1SJaegeuk Kim wrote++; 1322e05df3b1SJaegeuk Kim 1323e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1324e05df3b1SJaegeuk Kim break; 1325e05df3b1SJaegeuk Kim } 1326e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1327e05df3b1SJaegeuk Kim cond_resched(); 1328e05df3b1SJaegeuk Kim 1329e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1330e05df3b1SJaegeuk Kim step = 2; 1331e05df3b1SJaegeuk Kim break; 1332e05df3b1SJaegeuk Kim } 1333e05df3b1SJaegeuk Kim } 1334e05df3b1SJaegeuk Kim 1335e05df3b1SJaegeuk Kim if (step < 2) { 1336e05df3b1SJaegeuk Kim step++; 1337e05df3b1SJaegeuk Kim goto next_step; 1338e05df3b1SJaegeuk Kim } 1339e05df3b1SJaegeuk Kim 13400c3a5797SChao Yu if (wrote) { 13410c3a5797SChao Yu if (ino) 13420c3a5797SChao Yu f2fs_submit_merged_bio_cond(sbi, NULL, NULL, 13430c3a5797SChao Yu ino, NODE, WRITE); 13440c3a5797SChao Yu else 1345458e6197SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 13460c3a5797SChao Yu } 1347e05df3b1SJaegeuk Kim return nwritten; 1348e05df3b1SJaegeuk Kim } 1349e05df3b1SJaegeuk Kim 1350cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1351cfe58f9dSJaegeuk Kim { 1352cfe58f9dSJaegeuk Kim pgoff_t index = 0, end = LONG_MAX; 1353cfe58f9dSJaegeuk Kim struct pagevec pvec; 1354cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1355cfe58f9dSJaegeuk Kim 1356cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 13574ef51a8fSJaegeuk Kim 13584ef51a8fSJaegeuk Kim while (index <= end) { 13594ef51a8fSJaegeuk Kim int i, nr_pages; 13604ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1361cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 13624ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 13634ef51a8fSJaegeuk Kim if (nr_pages == 0) 13644ef51a8fSJaegeuk Kim break; 1365cfe58f9dSJaegeuk Kim 1366cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1367cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1368cfe58f9dSJaegeuk Kim 1369cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1370cfb271d4SChao Yu if (unlikely(page->index > end)) 1371cfe58f9dSJaegeuk Kim continue; 1372cfe58f9dSJaegeuk Kim 13734bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1374fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1375cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1376cfe58f9dSJaegeuk Kim ret = -EIO; 1377cfe58f9dSJaegeuk Kim } 13784bf08ff6SChao Yu } 1379cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1380cfe58f9dSJaegeuk Kim cond_resched(); 1381cfe58f9dSJaegeuk Kim } 1382cfe58f9dSJaegeuk Kim 13834ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1384cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 13854ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1386cfe58f9dSJaegeuk Kim ret2 = -EIO; 1387cfe58f9dSJaegeuk Kim if (!ret) 1388cfe58f9dSJaegeuk Kim ret = ret2; 1389cfe58f9dSJaegeuk Kim return ret; 1390cfe58f9dSJaegeuk Kim } 1391cfe58f9dSJaegeuk Kim 1392e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1393e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1394e05df3b1SJaegeuk Kim { 13954081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1396e05df3b1SJaegeuk Kim nid_t nid; 1397e05df3b1SJaegeuk Kim struct node_info ni; 1398fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 139905ca3632SJaegeuk Kim .sbi = sbi, 1400fb5566daSJaegeuk Kim .type = NODE, 1401fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 140205ca3632SJaegeuk Kim .page = page, 14034375a336SJaegeuk Kim .encrypted_page = NULL, 1404fb5566daSJaegeuk Kim }; 1405e05df3b1SJaegeuk Kim 1406ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1407ecda0de3SChao Yu 1408caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 140987a9bd26SJaegeuk Kim goto redirty_out; 1410cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1411cf779cabSJaegeuk Kim goto redirty_out; 141287a9bd26SJaegeuk Kim 1413e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1414e05df3b1SJaegeuk Kim nid = nid_of_node(page); 14159850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1416e05df3b1SJaegeuk Kim 141725b93346SJaegeuk Kim if (wbc->for_reclaim) { 141825b93346SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 141925b93346SJaegeuk Kim goto redirty_out; 142025b93346SJaegeuk Kim } else { 142125b93346SJaegeuk Kim down_read(&sbi->node_write); 142225b93346SJaegeuk Kim } 142325b93346SJaegeuk Kim 1424e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1425e05df3b1SJaegeuk Kim 1426e05df3b1SJaegeuk Kim /* This page is already truncated */ 14276bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 14282bca1e23SJaegeuk Kim ClearPageUptodate(page); 142939936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 143025b93346SJaegeuk Kim up_read(&sbi->node_write); 143139936837SJaegeuk Kim unlock_page(page); 143239936837SJaegeuk Kim return 0; 143339936837SJaegeuk Kim } 1434e05df3b1SJaegeuk Kim 1435e05df3b1SJaegeuk Kim set_page_writeback(page); 1436cf04e8ebSJaegeuk Kim fio.blk_addr = ni.blk_addr; 143705ca3632SJaegeuk Kim write_node_page(nid, &fio); 1438cf04e8ebSJaegeuk Kim set_node_addr(sbi, &ni, fio.blk_addr, is_fsync_dnode(page)); 1439e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1440b3582c68SChao Yu up_read(&sbi->node_write); 14410c3a5797SChao Yu 14420c3a5797SChao Yu if (wbc->for_reclaim) 14430c3a5797SChao Yu f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, NODE, WRITE); 14440c3a5797SChao Yu 1445e05df3b1SJaegeuk Kim unlock_page(page); 144627c6bd60SJaegeuk Kim 14470c3a5797SChao Yu if (unlikely(f2fs_cp_error(sbi))) 144827c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 144927c6bd60SJaegeuk Kim 1450e05df3b1SJaegeuk Kim return 0; 145187a9bd26SJaegeuk Kim 145287a9bd26SJaegeuk Kim redirty_out: 145376f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 145487a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1455e05df3b1SJaegeuk Kim } 1456e05df3b1SJaegeuk Kim 1457e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1458e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1459e05df3b1SJaegeuk Kim { 14604081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 146150c8cdb3SJaegeuk Kim long diff; 1462e05df3b1SJaegeuk Kim 14634660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 14644660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1465e05df3b1SJaegeuk Kim 1466a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 146787d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1468d3baf95dSJaegeuk Kim goto skip_write; 1469a7fdffbdSJaegeuk Kim 1470d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1471d31c7c3fSYunlei He 147250c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1473fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 1474e05df3b1SJaegeuk Kim sync_node_pages(sbi, 0, wbc); 147550c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1476e05df3b1SJaegeuk Kim return 0; 1477d3baf95dSJaegeuk Kim 1478d3baf95dSJaegeuk Kim skip_write: 1479d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1480d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1481d3baf95dSJaegeuk Kim return 0; 1482e05df3b1SJaegeuk Kim } 1483e05df3b1SJaegeuk Kim 1484e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1485e05df3b1SJaegeuk Kim { 148626c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 148726c6b887SJaegeuk Kim 1488e05df3b1SJaegeuk Kim SetPageUptodate(page); 1489e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1490e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 14914081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1492e05df3b1SJaegeuk Kim SetPagePrivate(page); 14939e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1494e05df3b1SJaegeuk Kim return 1; 1495e05df3b1SJaegeuk Kim } 1496e05df3b1SJaegeuk Kim return 0; 1497e05df3b1SJaegeuk Kim } 1498e05df3b1SJaegeuk Kim 14990a8165d7SJaegeuk Kim /* 1500e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1501e05df3b1SJaegeuk Kim */ 1502e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1503e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1504e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1505e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1506487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1507487261f3SChao Yu .releasepage = f2fs_release_page, 1508e05df3b1SJaegeuk Kim }; 1509e05df3b1SJaegeuk Kim 15108a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 15118a7ed66aSJaegeuk Kim nid_t n) 1512e05df3b1SJaegeuk Kim { 15138a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 15143aa770a9SNamjae Jeon } 1515e05df3b1SJaegeuk Kim 15168a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 15178a7ed66aSJaegeuk Kim struct free_nid *i) 1518e05df3b1SJaegeuk Kim { 1519e05df3b1SJaegeuk Kim list_del(&i->list); 15208a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1521e05df3b1SJaegeuk Kim } 1522e05df3b1SJaegeuk Kim 15236fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1524e05df3b1SJaegeuk Kim { 15256fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1526e05df3b1SJaegeuk Kim struct free_nid *i; 152759bbd474SJaegeuk Kim struct nat_entry *ne; 152859bbd474SJaegeuk Kim bool allocated = false; 1529e05df3b1SJaegeuk Kim 15306fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 153123d38844SHaicheng Li return -1; 15329198acebSJaegeuk Kim 15339198acebSJaegeuk Kim /* 0 nid should not be used */ 1534cfb271d4SChao Yu if (unlikely(nid == 0)) 15359198acebSJaegeuk Kim return 0; 153659bbd474SJaegeuk Kim 15377bd59381SGu Zheng if (build) { 153859bbd474SJaegeuk Kim /* do not add allocated nids */ 153959bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1540a5131193SJaegeuk Kim if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 15417ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 154259bbd474SJaegeuk Kim allocated = true; 154359bbd474SJaegeuk Kim if (allocated) 154459bbd474SJaegeuk Kim return 0; 1545e05df3b1SJaegeuk Kim } 15467bd59381SGu Zheng 15477bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1548e05df3b1SJaegeuk Kim i->nid = nid; 1549e05df3b1SJaegeuk Kim i->state = NID_NEW; 1550e05df3b1SJaegeuk Kim 1551769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1552769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1553769ec6e5SJaegeuk Kim return 0; 1554769ec6e5SJaegeuk Kim } 1555769ec6e5SJaegeuk Kim 1556e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 15578a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1558e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1559769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1560e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1561e05df3b1SJaegeuk Kim return 0; 1562e05df3b1SJaegeuk Kim } 1563e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1564e05df3b1SJaegeuk Kim nm_i->fcnt++; 1565e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1566769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1567e05df3b1SJaegeuk Kim return 1; 1568e05df3b1SJaegeuk Kim } 1569e05df3b1SJaegeuk Kim 1570e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1571e05df3b1SJaegeuk Kim { 1572e05df3b1SJaegeuk Kim struct free_nid *i; 1573cf0ee0f0SChao Yu bool need_free = false; 1574cf0ee0f0SChao Yu 1575e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 15768a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1577e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 15788a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1579e05df3b1SJaegeuk Kim nm_i->fcnt--; 1580cf0ee0f0SChao Yu need_free = true; 1581e05df3b1SJaegeuk Kim } 1582e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1583cf0ee0f0SChao Yu 1584cf0ee0f0SChao Yu if (need_free) 1585cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1586e05df3b1SJaegeuk Kim } 1587e05df3b1SJaegeuk Kim 15886fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1589e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1590e05df3b1SJaegeuk Kim { 15916fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1592e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1593e05df3b1SJaegeuk Kim block_t blk_addr; 1594e05df3b1SJaegeuk Kim int i; 1595e05df3b1SJaegeuk Kim 1596e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1597e05df3b1SJaegeuk Kim 1598e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 159923d38844SHaicheng Li 1600cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 160104431c44SJaegeuk Kim break; 160223d38844SHaicheng Li 1603e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 16049850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 160523d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 16066fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 160723d38844SHaicheng Li break; 160823d38844SHaicheng Li } 1609e05df3b1SJaegeuk Kim } 1610e05df3b1SJaegeuk Kim } 1611e05df3b1SJaegeuk Kim 1612e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1613e05df3b1SJaegeuk Kim { 1614e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1615e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1616e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 16178760952dSHaicheng Li int i = 0; 161855008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1619e05df3b1SJaegeuk Kim 162055008d84SJaegeuk Kim /* Enough entries */ 162155008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 162255008d84SJaegeuk Kim return; 1623e05df3b1SJaegeuk Kim 162455008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 162526879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 162626879fb1SChao Yu META_NAT, true); 1627e05df3b1SJaegeuk Kim 1628a5131193SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 1629a5131193SJaegeuk Kim 1630e05df3b1SJaegeuk Kim while (1) { 1631e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1632e05df3b1SJaegeuk Kim 16336fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1634e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1635e05df3b1SJaegeuk Kim 1636e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1637cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1638e05df3b1SJaegeuk Kim nid = 0; 163955008d84SJaegeuk Kim 1640a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1641e05df3b1SJaegeuk Kim break; 1642e05df3b1SJaegeuk Kim } 1643e05df3b1SJaegeuk Kim 164455008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 164555008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1646e05df3b1SJaegeuk Kim 1647e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1648e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1649e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1650e05df3b1SJaegeuk Kim block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr); 1651e05df3b1SJaegeuk Kim nid = le32_to_cpu(nid_in_journal(sum, i)); 1652e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 16536fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1654e05df3b1SJaegeuk Kim else 1655e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1656e05df3b1SJaegeuk Kim } 1657e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1658a5131193SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 16592db2388fSChao Yu 16602db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 1661ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 1662e05df3b1SJaegeuk Kim } 1663e05df3b1SJaegeuk Kim 1664e05df3b1SJaegeuk Kim /* 1665e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1666e05df3b1SJaegeuk Kim * from second parameter of this function. 1667e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1668e05df3b1SJaegeuk Kim */ 1669e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1670e05df3b1SJaegeuk Kim { 1671e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1672e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1673e05df3b1SJaegeuk Kim retry: 16747ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1675e05df3b1SJaegeuk Kim return false; 1676e05df3b1SJaegeuk Kim 1677e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1678e05df3b1SJaegeuk Kim 167955008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1680f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 16819850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 16822d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1683e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1684e05df3b1SJaegeuk Kim break; 1685e05df3b1SJaegeuk Kim 16869850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1687e05df3b1SJaegeuk Kim *nid = i->nid; 1688e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1689e05df3b1SJaegeuk Kim nm_i->fcnt--; 1690e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1691e05df3b1SJaegeuk Kim return true; 1692e05df3b1SJaegeuk Kim } 169355008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 169455008d84SJaegeuk Kim 169555008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 169655008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 169755008d84SJaegeuk Kim build_free_nids(sbi); 169855008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 169955008d84SJaegeuk Kim goto retry; 170055008d84SJaegeuk Kim } 1701e05df3b1SJaegeuk Kim 17020a8165d7SJaegeuk Kim /* 1703e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1704e05df3b1SJaegeuk Kim */ 1705e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1706e05df3b1SJaegeuk Kim { 1707e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1708e05df3b1SJaegeuk Kim struct free_nid *i; 1709e05df3b1SJaegeuk Kim 1710e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17118a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 17129850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 17138a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1714e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1715cf0ee0f0SChao Yu 1716cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1717e05df3b1SJaegeuk Kim } 1718e05df3b1SJaegeuk Kim 17190a8165d7SJaegeuk Kim /* 1720e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1721e05df3b1SJaegeuk Kim */ 1722e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1723e05df3b1SJaegeuk Kim { 172449952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 172549952fa1SJaegeuk Kim struct free_nid *i; 1726cf0ee0f0SChao Yu bool need_free = false; 172749952fa1SJaegeuk Kim 172865985d93SJaegeuk Kim if (!nid) 172965985d93SJaegeuk Kim return; 173065985d93SJaegeuk Kim 173149952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17328a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 17339850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 17346fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 17358a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1736cf0ee0f0SChao Yu need_free = true; 173795630cbaSHaicheng Li } else { 173849952fa1SJaegeuk Kim i->state = NID_NEW; 173949952fa1SJaegeuk Kim nm_i->fcnt++; 174095630cbaSHaicheng Li } 174149952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1742cf0ee0f0SChao Yu 1743cf0ee0f0SChao Yu if (need_free) 1744cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1745e05df3b1SJaegeuk Kim } 1746e05df3b1SJaegeuk Kim 174731696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 174831696580SChao Yu { 174931696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 175031696580SChao Yu struct free_nid *i, *next; 175131696580SChao Yu int nr = nr_shrink; 175231696580SChao Yu 175331696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 175431696580SChao Yu return 0; 175531696580SChao Yu 175631696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 175731696580SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 175831696580SChao Yu if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK) 175931696580SChao Yu break; 176031696580SChao Yu if (i->state == NID_ALLOC) 176131696580SChao Yu continue; 176231696580SChao Yu __del_from_free_nid_list(nm_i, i); 176331696580SChao Yu kmem_cache_free(free_nid_slab, i); 1764f7409d0fSJaegeuk Kim nm_i->fcnt--; 176531696580SChao Yu nr_shrink--; 176631696580SChao Yu } 176731696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 176831696580SChao Yu mutex_unlock(&nm_i->build_lock); 176931696580SChao Yu 177031696580SChao Yu return nr - nr_shrink; 177131696580SChao Yu } 177231696580SChao Yu 177370cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 177428cdce04SChao Yu { 177528cdce04SChao Yu void *src_addr, *dst_addr; 177628cdce04SChao Yu size_t inline_size; 177728cdce04SChao Yu struct page *ipage; 177828cdce04SChao Yu struct f2fs_inode *ri; 177928cdce04SChao Yu 17804081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 17819850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 178228cdce04SChao Yu 1783e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1784e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 1785e3b4d43fSJaegeuk Kim clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); 1786e3b4d43fSJaegeuk Kim goto update_inode; 1787e3b4d43fSJaegeuk Kim } 1788e3b4d43fSJaegeuk Kim 178928cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 179028cdce04SChao Yu src_addr = inline_xattr_addr(page); 179128cdce04SChao Yu inline_size = inline_xattr_size(inode); 179228cdce04SChao Yu 1793fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 179428cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1795e3b4d43fSJaegeuk Kim update_inode: 179628cdce04SChao Yu update_inode(inode, ipage); 179728cdce04SChao Yu f2fs_put_page(ipage, 1); 179828cdce04SChao Yu } 179928cdce04SChao Yu 18001c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1801abb2366cSJaegeuk Kim { 18024081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1803abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1804abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1805abb2366cSJaegeuk Kim struct node_info ni; 1806abb2366cSJaegeuk Kim 1807abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1808abb2366cSJaegeuk Kim if (!prev_xnid) 1809abb2366cSJaegeuk Kim goto recover_xnid; 1810abb2366cSJaegeuk Kim 1811abb2366cSJaegeuk Kim /* Deallocate node address */ 1812abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 18139850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1814abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1815abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1816479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1817abb2366cSJaegeuk Kim 1818abb2366cSJaegeuk Kim recover_xnid: 1819abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1820abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 18219850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1822abb2366cSJaegeuk Kim 1823abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1824abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1825abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1826479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1827abb2366cSJaegeuk Kim F2FS_I(inode)->i_xattr_nid = new_xnid; 1828abb2366cSJaegeuk Kim 1829abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1830abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1831479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1832abb2366cSJaegeuk Kim 1833abb2366cSJaegeuk Kim update_inode_page(inode); 1834abb2366cSJaegeuk Kim } 1835abb2366cSJaegeuk Kim 1836e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 1837e05df3b1SJaegeuk Kim { 183858bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 1839e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 1840e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1841e05df3b1SJaegeuk Kim struct page *ipage; 1842e05df3b1SJaegeuk Kim 1843e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 1844e8271fa3SJaegeuk Kim 1845e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 1846e8271fa3SJaegeuk Kim return -EINVAL; 1847e8271fa3SJaegeuk Kim 18484ef51a8fSJaegeuk Kim ipage = grab_cache_page(NODE_MAPPING(sbi), ino); 1849e05df3b1SJaegeuk Kim if (!ipage) 1850e05df3b1SJaegeuk Kim return -ENOMEM; 1851e05df3b1SJaegeuk Kim 1852e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 1853e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 1854e05df3b1SJaegeuk Kim 1855e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 1856e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 1857e05df3b1SJaegeuk Kim 185858bfaf44SJaegeuk Kim src = F2FS_INODE(page); 185958bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 1860e05df3b1SJaegeuk Kim 186158bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 186258bfaf44SJaegeuk Kim dst->i_size = 0; 186358bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 186458bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 186558bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 1866617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 1867e05df3b1SJaegeuk Kim 1868e05df3b1SJaegeuk Kim new_ni = old_ni; 1869e05df3b1SJaegeuk Kim new_ni.ino = ino; 1870e05df3b1SJaegeuk Kim 1871cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 187265e5cd0aSJaegeuk Kim WARN_ON(1); 1873479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 1874e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1875617deb8cSJaegeuk Kim set_page_dirty(ipage); 1876e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 1877e05df3b1SJaegeuk Kim return 0; 1878e05df3b1SJaegeuk Kim } 1879e05df3b1SJaegeuk Kim 1880e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 1881e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 1882e05df3b1SJaegeuk Kim { 1883e05df3b1SJaegeuk Kim struct f2fs_node *rn; 1884e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 1885e05df3b1SJaegeuk Kim block_t addr; 188690a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 18879ecf4b80SChao Yu int i, idx, last_offset, nrpages; 1888e05df3b1SJaegeuk Kim 1889e05df3b1SJaegeuk Kim /* scan the node segment */ 1890e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 1891e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 1892e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 1893e05df3b1SJaegeuk Kim 18949ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 18959af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 1896393ff91fSJaegeuk Kim 18979af0ff1cSChao Yu /* readahead node pages */ 189826879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 18999af0ff1cSChao Yu 19009ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 19012b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 1902393ff91fSJaegeuk Kim 19039ecf4b80SChao Yu rn = F2FS_NODE(page); 1904393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 1905393ff91fSJaegeuk Kim sum_entry->version = 0; 1906393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 19079af0ff1cSChao Yu sum_entry++; 19089ecf4b80SChao Yu f2fs_put_page(page, 1); 19099af0ff1cSChao Yu } 1910bac4eef6SChao Yu 19119ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 1912bac4eef6SChao Yu addr + nrpages); 19139af0ff1cSChao Yu } 19149ecf4b80SChao Yu return 0; 1915e05df3b1SJaegeuk Kim } 1916e05df3b1SJaegeuk Kim 1917aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 1918e05df3b1SJaegeuk Kim { 1919e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1920e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1921e05df3b1SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1922e05df3b1SJaegeuk Kim int i; 1923e05df3b1SJaegeuk Kim 1924e05df3b1SJaegeuk Kim mutex_lock(&curseg->curseg_mutex); 1925e05df3b1SJaegeuk Kim for (i = 0; i < nats_in_cursum(sum); i++) { 1926e05df3b1SJaegeuk Kim struct nat_entry *ne; 1927e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 1928e05df3b1SJaegeuk Kim nid_t nid = le32_to_cpu(nid_in_journal(sum, i)); 1929e05df3b1SJaegeuk Kim 1930e05df3b1SJaegeuk Kim raw_ne = nat_in_journal(sum, i); 19319be32d72SJaegeuk Kim 1932e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1933e05df3b1SJaegeuk Kim if (!ne) { 19349be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 193594dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 19369be32d72SJaegeuk Kim } 1937e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 1938e05df3b1SJaegeuk Kim } 1939e05df3b1SJaegeuk Kim update_nats_in_cursum(sum, -i); 1940e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 1941e05df3b1SJaegeuk Kim } 1942e05df3b1SJaegeuk Kim 1943309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 1944309cc2b6SJaegeuk Kim struct list_head *head, int max) 1945e05df3b1SJaegeuk Kim { 1946309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 1947e05df3b1SJaegeuk Kim 1948309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 1949309cc2b6SJaegeuk Kim goto add_out; 1950e05df3b1SJaegeuk Kim 1951309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 1952309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 1953309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 1954309cc2b6SJaegeuk Kim return; 1955309cc2b6SJaegeuk Kim } 1956309cc2b6SJaegeuk Kim } 1957309cc2b6SJaegeuk Kim add_out: 1958309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 1959aec71382SChao Yu } 1960aec71382SChao Yu 1961309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 1962309cc2b6SJaegeuk Kim struct nat_entry_set *set) 1963309cc2b6SJaegeuk Kim { 1964309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1965309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 1966309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 1967309cc2b6SJaegeuk Kim bool to_journal = true; 1968309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 1969309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 1970309cc2b6SJaegeuk Kim struct page *page = NULL; 1971aec71382SChao Yu 1972aec71382SChao Yu /* 1973aec71382SChao Yu * there are two steps to flush nat entries: 1974aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 1975aec71382SChao Yu * #2, flush nat entries to nat page. 1976aec71382SChao Yu */ 1977309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) 1978aec71382SChao Yu to_journal = false; 1979aec71382SChao Yu 1980aec71382SChao Yu if (to_journal) { 1981aec71382SChao Yu mutex_lock(&curseg->curseg_mutex); 1982aec71382SChao Yu } else { 1983e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 1984e05df3b1SJaegeuk Kim nat_blk = page_address(page); 19859850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 1986e05df3b1SJaegeuk Kim } 1987e05df3b1SJaegeuk Kim 1988aec71382SChao Yu /* flush dirty nats in nat entry set */ 1989309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 1990aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 1991aec71382SChao Yu nid_t nid = nat_get_nid(ne); 1992aec71382SChao Yu int offset; 1993aec71382SChao Yu 1994309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 1995309cc2b6SJaegeuk Kim continue; 1996309cc2b6SJaegeuk Kim 1997aec71382SChao Yu if (to_journal) { 1998aec71382SChao Yu offset = lookup_journal_in_cursum(sum, 1999aec71382SChao Yu NAT_JOURNAL, nid, 1); 20009850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2001aec71382SChao Yu raw_ne = &nat_in_journal(sum, offset); 2002aec71382SChao Yu nid_in_journal(sum, offset) = cpu_to_le32(nid); 2003aec71382SChao Yu } else { 2004aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2005aec71382SChao Yu } 2006aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 200788bd02c9SJaegeuk Kim nat_reset_flag(ne); 2008309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 2009309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 2010309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 2011e05df3b1SJaegeuk Kim } 2012aec71382SChao Yu 2013aec71382SChao Yu if (to_journal) 2014e05df3b1SJaegeuk Kim mutex_unlock(&curseg->curseg_mutex); 2015aec71382SChao Yu else 2016e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2017aec71382SChao Yu 201880ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 201980ec2e91SChangman Lee 2020309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2021309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2022309cc2b6SJaegeuk Kim } 2023aec71382SChao Yu 2024309cc2b6SJaegeuk Kim /* 2025309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2026309cc2b6SJaegeuk Kim */ 2027309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 2028309cc2b6SJaegeuk Kim { 2029309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2030309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2031309cc2b6SJaegeuk Kim struct f2fs_summary_block *sum = curseg->sum_blk; 20327aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2033309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2034309cc2b6SJaegeuk Kim unsigned int found; 2035309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2036309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2037309cc2b6SJaegeuk Kim 203820d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 203920d047c8SChangman Lee return; 2040a5131193SJaegeuk Kim 2041a5131193SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2042a5131193SJaegeuk Kim 2043309cc2b6SJaegeuk Kim /* 2044309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2045309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2046309cc2b6SJaegeuk Kim * into nat entry set. 2047309cc2b6SJaegeuk Kim */ 2048309cc2b6SJaegeuk Kim if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2049309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2050309cc2b6SJaegeuk Kim 2051309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 20527aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2053309cc2b6SJaegeuk Kim unsigned idx; 2054309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2055309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2056309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2057309cc2b6SJaegeuk Kim MAX_NAT_JENTRIES(sum)); 2058309cc2b6SJaegeuk Kim } 2059309cc2b6SJaegeuk Kim 2060309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2061309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 2062309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 2063309cc2b6SJaegeuk Kim 2064a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2065a5131193SJaegeuk Kim 20669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 2067e05df3b1SJaegeuk Kim } 2068e05df3b1SJaegeuk Kim 2069e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2070e05df3b1SJaegeuk Kim { 2071e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2072e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2073e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 2074e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 2075e05df3b1SJaegeuk Kim 2076e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2077e05df3b1SJaegeuk Kim 2078e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2079e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 2080e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 2081b63da15eSJaegeuk Kim 20827ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 20837ee0eeabSJaegeuk Kim 2084b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 2085c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 2086e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 2087e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2088cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2089ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 20902304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2091e05df3b1SJaegeuk Kim 20928a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2093e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 2094769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2095769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2096e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2097e05df3b1SJaegeuk Kim 2098e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2099e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 21008b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2101e05df3b1SJaegeuk Kim 2102e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 210379b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2104e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2105e05df3b1SJaegeuk Kim if (!version_bitmap) 2106e05df3b1SJaegeuk Kim return -EFAULT; 2107e05df3b1SJaegeuk Kim 210879b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 210979b5793bSAlexandru Gheorghiu GFP_KERNEL); 211079b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 211179b5793bSAlexandru Gheorghiu return -ENOMEM; 2112e05df3b1SJaegeuk Kim return 0; 2113e05df3b1SJaegeuk Kim } 2114e05df3b1SJaegeuk Kim 2115e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2116e05df3b1SJaegeuk Kim { 2117e05df3b1SJaegeuk Kim int err; 2118e05df3b1SJaegeuk Kim 2119e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2120e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2121e05df3b1SJaegeuk Kim return -ENOMEM; 2122e05df3b1SJaegeuk Kim 2123e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2124e05df3b1SJaegeuk Kim if (err) 2125e05df3b1SJaegeuk Kim return err; 2126e05df3b1SJaegeuk Kim 2127e05df3b1SJaegeuk Kim build_free_nids(sbi); 2128e05df3b1SJaegeuk Kim return 0; 2129e05df3b1SJaegeuk Kim } 2130e05df3b1SJaegeuk Kim 2131e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2132e05df3b1SJaegeuk Kim { 2133e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2134e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2135e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 21367aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2137e05df3b1SJaegeuk Kim nid_t nid = 0; 2138e05df3b1SJaegeuk Kim unsigned int found; 2139e05df3b1SJaegeuk Kim 2140e05df3b1SJaegeuk Kim if (!nm_i) 2141e05df3b1SJaegeuk Kim return; 2142e05df3b1SJaegeuk Kim 2143e05df3b1SJaegeuk Kim /* destroy free nid list */ 2144e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2145e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 21469850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 21478a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2148e05df3b1SJaegeuk Kim nm_i->fcnt--; 2149cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2150cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2151cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2152e05df3b1SJaegeuk Kim } 21539850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2154e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2155e05df3b1SJaegeuk Kim 2156e05df3b1SJaegeuk Kim /* destroy nat cache */ 21578b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2158e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2159e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2160e05df3b1SJaegeuk Kim unsigned idx; 21617aed0d45SJaegeuk Kim 2162b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2163b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2164b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2165e05df3b1SJaegeuk Kim } 21669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 21677aed0d45SJaegeuk Kim 21687aed0d45SJaegeuk Kim /* destroy nat set cache */ 21697aed0d45SJaegeuk Kim nid = 0; 21707aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 21717aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 21727aed0d45SJaegeuk Kim unsigned idx; 21737aed0d45SJaegeuk Kim 21747aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 21757aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 21767aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 21777aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 21787aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 21797aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 21807aed0d45SJaegeuk Kim } 21817aed0d45SJaegeuk Kim } 21828b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2183e05df3b1SJaegeuk Kim 2184e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2185e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2186e05df3b1SJaegeuk Kim kfree(nm_i); 2187e05df3b1SJaegeuk Kim } 2188e05df3b1SJaegeuk Kim 21896e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2190e05df3b1SJaegeuk Kim { 2191e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2192e8512d2eSGu Zheng sizeof(struct nat_entry)); 2193e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2194aec71382SChao Yu goto fail; 2195e05df3b1SJaegeuk Kim 2196e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2197e8512d2eSGu Zheng sizeof(struct free_nid)); 2198aec71382SChao Yu if (!free_nid_slab) 2199ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2200aec71382SChao Yu 2201aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2202aec71382SChao Yu sizeof(struct nat_entry_set)); 2203aec71382SChao Yu if (!nat_entry_set_slab) 2204ce3e6d25SMarkus Elfring goto destroy_free_nid; 2205e05df3b1SJaegeuk Kim return 0; 2206aec71382SChao Yu 2207ce3e6d25SMarkus Elfring destroy_free_nid: 2208aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2209ce3e6d25SMarkus Elfring destroy_nat_entry: 2210aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2211aec71382SChao Yu fail: 2212aec71382SChao Yu return -ENOMEM; 2213e05df3b1SJaegeuk Kim } 2214e05df3b1SJaegeuk Kim 2215e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2216e05df3b1SJaegeuk Kim { 2217aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2218e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2219e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2220e05df3b1SJaegeuk Kim } 2221