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)) >> 4909cbfeafSKirill A. Shutemov PAGE_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)) >> 5309cbfeafSKirill A. Shutemov PAGE_SHIFT; 54e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 55e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 56e589c2c4SJaegeuk Kim res = false; 57e589c2c4SJaegeuk Kim if (nm_i->nat_cnt > DEF_NAT_CACHE_THRESHOLD) 58e589c2c4SJaegeuk Kim res = false; 59a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 60a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 61a1257023SJaegeuk Kim return false; 62a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 63a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 64e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 65e5e7ea3cSJaegeuk Kim int i; 66e5e7ea3cSJaegeuk Kim 67e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6867298804SChao Yu mem_size += (sbi->im[i].ino_num * 6909cbfeafSKirill A. Shutemov sizeof(struct ino_entry)) >> PAGE_SHIFT; 70e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 71429511cdSChao Yu } else if (type == EXTENT_CACHE) { 727441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 737441ccefSJaegeuk Kim sizeof(struct extent_tree) + 74429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 7509cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 76429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 771e84371fSJaegeuk Kim } else { 781663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 791663cae4SJaegeuk Kim return true; 806fb03f3aSJaegeuk Kim } 816fb03f3aSJaegeuk Kim return res; 82cdfc41c1SJaegeuk Kim } 83cdfc41c1SJaegeuk Kim 84e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 85e05df3b1SJaegeuk Kim { 86e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 87e05df3b1SJaegeuk Kim unsigned int long flags; 88e05df3b1SJaegeuk Kim 89e05df3b1SJaegeuk Kim if (PageDirty(page)) { 90e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 91e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 92e05df3b1SJaegeuk Kim page_index(page), 93e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 94e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 95e05df3b1SJaegeuk Kim 96e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 974081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 98e05df3b1SJaegeuk Kim } 99e05df3b1SJaegeuk Kim ClearPageUptodate(page); 100e05df3b1SJaegeuk Kim } 101e05df3b1SJaegeuk Kim 102e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 103e05df3b1SJaegeuk Kim { 104e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 105e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 106e05df3b1SJaegeuk Kim } 107e05df3b1SJaegeuk Kim 108e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 109e05df3b1SJaegeuk Kim { 110e05df3b1SJaegeuk Kim struct page *src_page; 111e05df3b1SJaegeuk Kim struct page *dst_page; 112e05df3b1SJaegeuk Kim pgoff_t src_off; 113e05df3b1SJaegeuk Kim pgoff_t dst_off; 114e05df3b1SJaegeuk Kim void *src_addr; 115e05df3b1SJaegeuk Kim void *dst_addr; 116e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 117e05df3b1SJaegeuk Kim 118e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 119e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 120e05df3b1SJaegeuk Kim 121e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 122e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 123e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1249850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 125e05df3b1SJaegeuk Kim 126e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 127e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 12809cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 129e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 130e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 131e05df3b1SJaegeuk Kim 132e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 133e05df3b1SJaegeuk Kim 134e05df3b1SJaegeuk Kim return dst_page; 135e05df3b1SJaegeuk Kim } 136e05df3b1SJaegeuk Kim 137e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 138e05df3b1SJaegeuk Kim { 139e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 140e05df3b1SJaegeuk Kim } 141e05df3b1SJaegeuk Kim 142e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 143e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 144e05df3b1SJaegeuk Kim { 145e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 146e05df3b1SJaegeuk Kim } 147e05df3b1SJaegeuk Kim 148e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 149e05df3b1SJaegeuk Kim { 150e05df3b1SJaegeuk Kim list_del(&e->list); 151e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 152e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 153e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 154e05df3b1SJaegeuk Kim } 155e05df3b1SJaegeuk Kim 156309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 157309cc2b6SJaegeuk Kim struct nat_entry *ne) 158309cc2b6SJaegeuk Kim { 159309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 160309cc2b6SJaegeuk Kim struct nat_entry_set *head; 161309cc2b6SJaegeuk Kim 162309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 163309cc2b6SJaegeuk Kim return; 1649be32d72SJaegeuk Kim 165309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 166309cc2b6SJaegeuk Kim if (!head) { 16780c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 168309cc2b6SJaegeuk Kim 169309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 170309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 171309cc2b6SJaegeuk Kim head->set = set; 172309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1739be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 174309cc2b6SJaegeuk Kim } 175309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 176309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 177309cc2b6SJaegeuk Kim head->entry_cnt++; 178309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 179309cc2b6SJaegeuk Kim } 180309cc2b6SJaegeuk Kim 181309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 182309cc2b6SJaegeuk Kim struct nat_entry *ne) 183309cc2b6SJaegeuk Kim { 18420d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 185309cc2b6SJaegeuk Kim struct nat_entry_set *head; 186309cc2b6SJaegeuk Kim 187309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 188309cc2b6SJaegeuk Kim if (head) { 189309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 190309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 191309cc2b6SJaegeuk Kim head->entry_cnt--; 192309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 193309cc2b6SJaegeuk Kim } 194309cc2b6SJaegeuk Kim } 195309cc2b6SJaegeuk Kim 196309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 197309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 198309cc2b6SJaegeuk Kim { 199309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 200309cc2b6SJaegeuk Kim start, nr); 201309cc2b6SJaegeuk Kim } 202309cc2b6SJaegeuk Kim 2032dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2042dcf51abSJaegeuk Kim { 2052dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2062dcf51abSJaegeuk Kim struct nat_entry *e; 2072dcf51abSJaegeuk Kim bool need = false; 2082dcf51abSJaegeuk Kim 2092dcf51abSJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2102dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2112dcf51abSJaegeuk Kim if (e) { 2122dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2132dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2142dcf51abSJaegeuk Kim need = true; 2152dcf51abSJaegeuk Kim } 2162dcf51abSJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2172dcf51abSJaegeuk Kim return need; 2182dcf51abSJaegeuk Kim } 2192dcf51abSJaegeuk Kim 22088bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 221e05df3b1SJaegeuk Kim { 222e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 223e05df3b1SJaegeuk Kim struct nat_entry *e; 22488bd02c9SJaegeuk Kim bool is_cp = true; 225e05df3b1SJaegeuk Kim 2268b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 227e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2287ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22988bd02c9SJaegeuk Kim is_cp = false; 2308b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 231e05df3b1SJaegeuk Kim return is_cp; 232e05df3b1SJaegeuk Kim } 233e05df3b1SJaegeuk Kim 23488bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 235b6fe5873SJaegeuk Kim { 236b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 237b6fe5873SJaegeuk Kim struct nat_entry *e; 23888bd02c9SJaegeuk Kim bool need_update = true; 239b6fe5873SJaegeuk Kim 2408b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 24188bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 24288bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 24388bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24488bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24588bd02c9SJaegeuk Kim need_update = false; 2468b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24788bd02c9SJaegeuk Kim return need_update; 248b6fe5873SJaegeuk Kim } 249b6fe5873SJaegeuk Kim 250e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 251e05df3b1SJaegeuk Kim { 252e05df3b1SJaegeuk Kim struct nat_entry *new; 253e05df3b1SJaegeuk Kim 25480c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2559be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 256e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 257e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25888bd02c9SJaegeuk Kim nat_reset_flag(new); 259e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 260e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 261e05df3b1SJaegeuk Kim return new; 262e05df3b1SJaegeuk Kim } 263e05df3b1SJaegeuk Kim 2641515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 265e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 266e05df3b1SJaegeuk Kim { 2671515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 268e05df3b1SJaegeuk Kim struct nat_entry *e; 2699be32d72SJaegeuk Kim 270e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 271e05df3b1SJaegeuk Kim if (!e) { 272e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 27394dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 2741515aef0SChao Yu } else { 2751515aef0SChao Yu f2fs_bug_on(sbi, nat_get_ino(e) != ne->ino || 2761515aef0SChao Yu nat_get_blkaddr(e) != ne->block_addr || 2771515aef0SChao Yu nat_get_version(e) != ne->version); 278e05df3b1SJaegeuk Kim } 279e05df3b1SJaegeuk Kim } 280e05df3b1SJaegeuk Kim 281e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 282479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 283e05df3b1SJaegeuk Kim { 284e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 285e05df3b1SJaegeuk Kim struct nat_entry *e; 2869be32d72SJaegeuk Kim 2878b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 288e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 289e05df3b1SJaegeuk Kim if (!e) { 290e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2915c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2929850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 293e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 294e05df3b1SJaegeuk Kim /* 295e05df3b1SJaegeuk Kim * when nid is reallocated, 296e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 297e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 298e05df3b1SJaegeuk Kim */ 2995c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3009850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 301e05df3b1SJaegeuk Kim } 302e05df3b1SJaegeuk Kim 303e05df3b1SJaegeuk Kim /* sanity check */ 3049850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3059850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 306e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3079850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 308e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3099850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 310e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 311e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 312e05df3b1SJaegeuk Kim 313e1c42045Sarter97 /* increment version no as node is removed */ 314e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 315e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 316e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 31726834466SJaegeuk Kim 31826834466SJaegeuk Kim /* in order to reuse the nid */ 31926834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 32026834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 321e05df3b1SJaegeuk Kim } 322e05df3b1SJaegeuk Kim 323e05df3b1SJaegeuk Kim /* change address */ 324e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 32588bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 32688bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 327e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 328479f40c4SJaegeuk Kim 329479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 330d5b692b7SChao Yu if (ni->nid != ni->ino) 331479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 33288bd02c9SJaegeuk Kim if (e) { 33388bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 33488bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 33588bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 33688bd02c9SJaegeuk Kim } 3378b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 338e05df3b1SJaegeuk Kim } 339e05df3b1SJaegeuk Kim 3404660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 341e05df3b1SJaegeuk Kim { 342e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3431b38dc8eSJaegeuk Kim int nr = nr_shrink; 344e05df3b1SJaegeuk Kim 3451b38dc8eSJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 346e05df3b1SJaegeuk Kim return 0; 347e05df3b1SJaegeuk Kim 348e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 349e05df3b1SJaegeuk Kim struct nat_entry *ne; 350e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 351e05df3b1SJaegeuk Kim struct nat_entry, list); 352e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 353e05df3b1SJaegeuk Kim nr_shrink--; 354e05df3b1SJaegeuk Kim } 3558b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3561b38dc8eSJaegeuk Kim return nr - nr_shrink; 357e05df3b1SJaegeuk Kim } 358e05df3b1SJaegeuk Kim 3590a8165d7SJaegeuk Kim /* 360e1c42045Sarter97 * This function always returns success 361e05df3b1SJaegeuk Kim */ 362e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 363e05df3b1SJaegeuk Kim { 364e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 365e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 366b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 367e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 368e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 369e05df3b1SJaegeuk Kim struct page *page = NULL; 370e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 371e05df3b1SJaegeuk Kim struct nat_entry *e; 372e05df3b1SJaegeuk Kim int i; 373e05df3b1SJaegeuk Kim 374e05df3b1SJaegeuk Kim ni->nid = nid; 375e05df3b1SJaegeuk Kim 376e05df3b1SJaegeuk Kim /* Check nat cache */ 3778b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 378e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 379e05df3b1SJaegeuk Kim if (e) { 380e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 381e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 382e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 3838b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 384e05df3b1SJaegeuk Kim return; 3851515aef0SChao Yu } 386e05df3b1SJaegeuk Kim 3873547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3883547ea96SJaegeuk Kim 389e05df3b1SJaegeuk Kim /* Check current segment summary */ 390b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 391dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 392e05df3b1SJaegeuk Kim if (i >= 0) { 393dfc08a12SChao Yu ne = nat_in_journal(journal, i); 394e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 395e05df3b1SJaegeuk Kim } 396b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 397e05df3b1SJaegeuk Kim if (i >= 0) 398e05df3b1SJaegeuk Kim goto cache; 399e05df3b1SJaegeuk Kim 400e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 401e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 402e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 403e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 404e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 405e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 406e05df3b1SJaegeuk Kim cache: 4071515aef0SChao Yu up_read(&nm_i->nat_tree_lock); 408e05df3b1SJaegeuk Kim /* cache nat entry */ 4091515aef0SChao Yu down_write(&nm_i->nat_tree_lock); 4101515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 411a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 412e05df3b1SJaegeuk Kim } 413e05df3b1SJaegeuk Kim 41479344efbSJaegeuk Kim /* 41579344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 41679344efbSJaegeuk Kim */ 41779344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 41879344efbSJaegeuk Kim { 41979344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 42079344efbSJaegeuk Kim struct blk_plug plug; 42179344efbSJaegeuk Kim int i, end; 42279344efbSJaegeuk Kim nid_t nid; 42379344efbSJaegeuk Kim 42479344efbSJaegeuk Kim blk_start_plug(&plug); 42579344efbSJaegeuk Kim 42679344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 42779344efbSJaegeuk Kim end = start + n; 42879344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 42979344efbSJaegeuk Kim for (i = start; i < end; i++) { 43079344efbSJaegeuk Kim nid = get_nid(parent, i, false); 43179344efbSJaegeuk Kim ra_node_page(sbi, nid); 43279344efbSJaegeuk Kim } 43379344efbSJaegeuk Kim 43479344efbSJaegeuk Kim blk_finish_plug(&plug); 43579344efbSJaegeuk Kim } 43679344efbSJaegeuk Kim 4373cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4383cf45747SChao Yu { 4393cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4403cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4413cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4423cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4433cf45747SChao Yu int cur_level = dn->cur_level; 4443cf45747SChao Yu int max_level = dn->max_level; 4453cf45747SChao Yu pgoff_t base = 0; 4463cf45747SChao Yu 4473cf45747SChao Yu if (!dn->max_level) 4483cf45747SChao Yu return pgofs + 1; 4493cf45747SChao Yu 4503cf45747SChao Yu while (max_level-- > cur_level) 4513cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4523cf45747SChao Yu 4533cf45747SChao Yu switch (dn->max_level) { 4543cf45747SChao Yu case 3: 4553cf45747SChao Yu base += 2 * indirect_blks; 4563cf45747SChao Yu case 2: 4573cf45747SChao Yu base += 2 * direct_blks; 4583cf45747SChao Yu case 1: 4593cf45747SChao Yu base += direct_index; 4603cf45747SChao Yu break; 4613cf45747SChao Yu default: 4623cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 4633cf45747SChao Yu } 4643cf45747SChao Yu 4653cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 4663cf45747SChao Yu } 4673cf45747SChao Yu 4680a8165d7SJaegeuk Kim /* 469e05df3b1SJaegeuk Kim * The maximum depth is four. 470e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 471e05df3b1SJaegeuk Kim */ 47281ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 473de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 474e05df3b1SJaegeuk Kim { 47581ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 476e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 477e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 478e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 479e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 480e05df3b1SJaegeuk Kim int n = 0; 481e05df3b1SJaegeuk Kim int level = 0; 482e05df3b1SJaegeuk Kim 483e05df3b1SJaegeuk Kim noffset[0] = 0; 484e05df3b1SJaegeuk Kim 485e05df3b1SJaegeuk Kim if (block < direct_index) { 48625c0a6e5SNamjae Jeon offset[n] = block; 487e05df3b1SJaegeuk Kim goto got; 488e05df3b1SJaegeuk Kim } 489e05df3b1SJaegeuk Kim block -= direct_index; 490e05df3b1SJaegeuk Kim if (block < direct_blks) { 491e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 492e05df3b1SJaegeuk Kim noffset[n] = 1; 49325c0a6e5SNamjae Jeon offset[n] = block; 494e05df3b1SJaegeuk Kim level = 1; 495e05df3b1SJaegeuk Kim goto got; 496e05df3b1SJaegeuk Kim } 497e05df3b1SJaegeuk Kim block -= direct_blks; 498e05df3b1SJaegeuk Kim if (block < direct_blks) { 499e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 500e05df3b1SJaegeuk Kim noffset[n] = 2; 50125c0a6e5SNamjae Jeon offset[n] = block; 502e05df3b1SJaegeuk Kim level = 1; 503e05df3b1SJaegeuk Kim goto got; 504e05df3b1SJaegeuk Kim } 505e05df3b1SJaegeuk Kim block -= direct_blks; 506e05df3b1SJaegeuk Kim if (block < indirect_blks) { 507e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 508e05df3b1SJaegeuk Kim noffset[n] = 3; 509e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 510e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 51125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 512e05df3b1SJaegeuk Kim level = 2; 513e05df3b1SJaegeuk Kim goto got; 514e05df3b1SJaegeuk Kim } 515e05df3b1SJaegeuk Kim block -= indirect_blks; 516e05df3b1SJaegeuk Kim if (block < indirect_blks) { 517e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 518e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 519e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 520e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 52125c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 522e05df3b1SJaegeuk Kim level = 2; 523e05df3b1SJaegeuk Kim goto got; 524e05df3b1SJaegeuk Kim } 525e05df3b1SJaegeuk Kim block -= indirect_blks; 526e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 527e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 528e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 529e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 530e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 531e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 532e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 533e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 534e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 535e05df3b1SJaegeuk Kim offset[n - 1]; 53625c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 537e05df3b1SJaegeuk Kim level = 3; 538e05df3b1SJaegeuk Kim goto got; 539e05df3b1SJaegeuk Kim } else { 540e05df3b1SJaegeuk Kim BUG(); 541e05df3b1SJaegeuk Kim } 542e05df3b1SJaegeuk Kim got: 543e05df3b1SJaegeuk Kim return level; 544e05df3b1SJaegeuk Kim } 545e05df3b1SJaegeuk Kim 546e05df3b1SJaegeuk Kim /* 547e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5484f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5494f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 55039936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 551e05df3b1SJaegeuk Kim */ 552266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 553e05df3b1SJaegeuk Kim { 5544081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 555e05df3b1SJaegeuk Kim struct page *npage[4]; 556f1a3b98eSJaegeuk Kim struct page *parent = NULL; 557e05df3b1SJaegeuk Kim int offset[4]; 558e05df3b1SJaegeuk Kim unsigned int noffset[4]; 559e05df3b1SJaegeuk Kim nid_t nids[4]; 5603cf45747SChao Yu int level, i = 0; 561e05df3b1SJaegeuk Kim int err = 0; 562e05df3b1SJaegeuk Kim 56381ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 564e05df3b1SJaegeuk Kim 565e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5661646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5671646cfacSJaegeuk Kim 5681646cfacSJaegeuk Kim if (!npage[0]) { 569e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 570e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 571e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5721646cfacSJaegeuk Kim } 573f1a3b98eSJaegeuk Kim 574f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 575f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 57676629165SJaegeuk Kim err = -ENOENT; 577f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 578f1a3b98eSJaegeuk Kim goto release_out; 579f1a3b98eSJaegeuk Kim } 580f1a3b98eSJaegeuk Kim 581e05df3b1SJaegeuk Kim parent = npage[0]; 58252c2db3fSChangman Lee if (level != 0) 583e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 584e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 585e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 586e05df3b1SJaegeuk Kim 587e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 588e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 589e05df3b1SJaegeuk Kim bool done = false; 590e05df3b1SJaegeuk Kim 591266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 592e05df3b1SJaegeuk Kim /* alloc new node */ 593e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 594e05df3b1SJaegeuk Kim err = -ENOSPC; 595e05df3b1SJaegeuk Kim goto release_pages; 596e05df3b1SJaegeuk Kim } 597e05df3b1SJaegeuk Kim 598e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5998ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 600e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 601e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 602e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 603e05df3b1SJaegeuk Kim goto release_pages; 604e05df3b1SJaegeuk Kim } 605e05df3b1SJaegeuk Kim 606e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 607e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 608e05df3b1SJaegeuk Kim done = true; 609266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 610e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 611e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 612e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 613e05df3b1SJaegeuk Kim goto release_pages; 614e05df3b1SJaegeuk Kim } 615e05df3b1SJaegeuk Kim done = true; 616e05df3b1SJaegeuk Kim } 617e05df3b1SJaegeuk Kim if (i == 1) { 618e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 619e05df3b1SJaegeuk Kim unlock_page(parent); 620e05df3b1SJaegeuk Kim } else { 621e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 622e05df3b1SJaegeuk Kim } 623e05df3b1SJaegeuk Kim 624e05df3b1SJaegeuk Kim if (!done) { 625e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 626e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 627e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 628e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 629e05df3b1SJaegeuk Kim goto release_out; 630e05df3b1SJaegeuk Kim } 631e05df3b1SJaegeuk Kim } 632e05df3b1SJaegeuk Kim if (i < level) { 633e05df3b1SJaegeuk Kim parent = npage[i]; 634e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 635e05df3b1SJaegeuk Kim } 636e05df3b1SJaegeuk Kim } 637e05df3b1SJaegeuk Kim dn->nid = nids[level]; 638e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 639e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 640e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 641e05df3b1SJaegeuk Kim return 0; 642e05df3b1SJaegeuk Kim 643e05df3b1SJaegeuk Kim release_pages: 644e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 645e05df3b1SJaegeuk Kim if (i > 1) 646e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 647e05df3b1SJaegeuk Kim release_out: 648e05df3b1SJaegeuk Kim dn->inode_page = NULL; 649e05df3b1SJaegeuk Kim dn->node_page = NULL; 6503cf45747SChao Yu if (err == -ENOENT) { 6513cf45747SChao Yu dn->cur_level = i; 6523cf45747SChao Yu dn->max_level = level; 6533cf45747SChao Yu } 654e05df3b1SJaegeuk Kim return err; 655e05df3b1SJaegeuk Kim } 656e05df3b1SJaegeuk Kim 657e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 658e05df3b1SJaegeuk Kim { 6594081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 660e05df3b1SJaegeuk Kim struct node_info ni; 661e05df3b1SJaegeuk Kim 662e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 66371e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 6649850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 66571e9fec5SJaegeuk Kim goto invalidate; 66671e9fec5SJaegeuk Kim } 6679850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 668e05df3b1SJaegeuk Kim 669e05df3b1SJaegeuk Kim /* Deallocate node address */ 67071e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 671ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 672479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 673e05df3b1SJaegeuk Kim 674e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 675e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 676e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 6770f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 678e05df3b1SJaegeuk Kim } 67971e9fec5SJaegeuk Kim invalidate: 680e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 681caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 682e05df3b1SJaegeuk Kim 683e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 684bf39c00aSJaegeuk Kim 685bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 686bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 687bf39c00aSJaegeuk Kim 688e05df3b1SJaegeuk Kim dn->node_page = NULL; 68951dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 690e05df3b1SJaegeuk Kim } 691e05df3b1SJaegeuk Kim 692e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 693e05df3b1SJaegeuk Kim { 694e05df3b1SJaegeuk Kim struct page *page; 695e05df3b1SJaegeuk Kim 696e05df3b1SJaegeuk Kim if (dn->nid == 0) 697e05df3b1SJaegeuk Kim return 1; 698e05df3b1SJaegeuk Kim 699e05df3b1SJaegeuk Kim /* get direct node */ 7004081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 701e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 702e05df3b1SJaegeuk Kim return 1; 703e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 704e05df3b1SJaegeuk Kim return PTR_ERR(page); 705e05df3b1SJaegeuk Kim 706e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 707e05df3b1SJaegeuk Kim dn->node_page = page; 708e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 709e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 710e05df3b1SJaegeuk Kim truncate_node(dn); 711e05df3b1SJaegeuk Kim return 1; 712e05df3b1SJaegeuk Kim } 713e05df3b1SJaegeuk Kim 714e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 715e05df3b1SJaegeuk Kim int ofs, int depth) 716e05df3b1SJaegeuk Kim { 717e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 718e05df3b1SJaegeuk Kim struct page *page; 719e05df3b1SJaegeuk Kim struct f2fs_node *rn; 720e05df3b1SJaegeuk Kim nid_t child_nid; 721e05df3b1SJaegeuk Kim unsigned int child_nofs; 722e05df3b1SJaegeuk Kim int freed = 0; 723e05df3b1SJaegeuk Kim int i, ret; 724e05df3b1SJaegeuk Kim 725e05df3b1SJaegeuk Kim if (dn->nid == 0) 726e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 727e05df3b1SJaegeuk Kim 72851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 72951dd6249SNamjae Jeon 7304081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 73151dd6249SNamjae Jeon if (IS_ERR(page)) { 73251dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 733e05df3b1SJaegeuk Kim return PTR_ERR(page); 73451dd6249SNamjae Jeon } 735e05df3b1SJaegeuk Kim 73679344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 73779344efbSJaegeuk Kim 73845590710SGu Zheng rn = F2FS_NODE(page); 739e05df3b1SJaegeuk Kim if (depth < 3) { 740e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 741e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 742e05df3b1SJaegeuk Kim if (child_nid == 0) 743e05df3b1SJaegeuk Kim continue; 744e05df3b1SJaegeuk Kim rdn.nid = child_nid; 745e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 746e05df3b1SJaegeuk Kim if (ret < 0) 747e05df3b1SJaegeuk Kim goto out_err; 74812719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 74993bae099SJaegeuk Kim dn->node_changed = true; 750e05df3b1SJaegeuk Kim } 751e05df3b1SJaegeuk Kim } else { 752e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 753e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 754e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 755e05df3b1SJaegeuk Kim if (child_nid == 0) { 756e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 757e05df3b1SJaegeuk Kim continue; 758e05df3b1SJaegeuk Kim } 759e05df3b1SJaegeuk Kim rdn.nid = child_nid; 760e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 761e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 76212719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 76393bae099SJaegeuk Kim dn->node_changed = true; 764e05df3b1SJaegeuk Kim child_nofs += ret; 765e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 766e05df3b1SJaegeuk Kim goto out_err; 767e05df3b1SJaegeuk Kim } 768e05df3b1SJaegeuk Kim } 769e05df3b1SJaegeuk Kim freed = child_nofs; 770e05df3b1SJaegeuk Kim } 771e05df3b1SJaegeuk Kim 772e05df3b1SJaegeuk Kim if (!ofs) { 773e05df3b1SJaegeuk Kim /* remove current indirect node */ 774e05df3b1SJaegeuk Kim dn->node_page = page; 775e05df3b1SJaegeuk Kim truncate_node(dn); 776e05df3b1SJaegeuk Kim freed++; 777e05df3b1SJaegeuk Kim } else { 778e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 779e05df3b1SJaegeuk Kim } 78051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 781e05df3b1SJaegeuk Kim return freed; 782e05df3b1SJaegeuk Kim 783e05df3b1SJaegeuk Kim out_err: 784e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 78551dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 786e05df3b1SJaegeuk Kim return ret; 787e05df3b1SJaegeuk Kim } 788e05df3b1SJaegeuk Kim 789e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 790e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 791e05df3b1SJaegeuk Kim { 792e05df3b1SJaegeuk Kim struct page *pages[2]; 793e05df3b1SJaegeuk Kim nid_t nid[3]; 794e05df3b1SJaegeuk Kim nid_t child_nid; 795e05df3b1SJaegeuk Kim int err = 0; 796e05df3b1SJaegeuk Kim int i; 797e05df3b1SJaegeuk Kim int idx = depth - 2; 798e05df3b1SJaegeuk Kim 799e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 800e05df3b1SJaegeuk Kim if (!nid[0]) 801e05df3b1SJaegeuk Kim return 0; 802e05df3b1SJaegeuk Kim 803e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 804a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 805e1c42045Sarter97 /* reference count'll be increased */ 8064081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 807e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 808e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 809a225dca3Sshifei10.ge idx = i - 1; 810e05df3b1SJaegeuk Kim goto fail; 811e05df3b1SJaegeuk Kim } 812e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 813e05df3b1SJaegeuk Kim } 814e05df3b1SJaegeuk Kim 81579344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 81679344efbSJaegeuk Kim 817e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 818a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 819e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 820e05df3b1SJaegeuk Kim if (!child_nid) 821e05df3b1SJaegeuk Kim continue; 822e05df3b1SJaegeuk Kim dn->nid = child_nid; 823e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 824e05df3b1SJaegeuk Kim if (err < 0) 825e05df3b1SJaegeuk Kim goto fail; 82612719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 82793bae099SJaegeuk Kim dn->node_changed = true; 828e05df3b1SJaegeuk Kim } 829e05df3b1SJaegeuk Kim 830a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 831e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 832e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 833e05df3b1SJaegeuk Kim truncate_node(dn); 834e05df3b1SJaegeuk Kim } else { 835e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 836e05df3b1SJaegeuk Kim } 837e05df3b1SJaegeuk Kim offset[idx]++; 838a225dca3Sshifei10.ge offset[idx + 1] = 0; 839a225dca3Sshifei10.ge idx--; 840e05df3b1SJaegeuk Kim fail: 841a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 842e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 84351dd6249SNamjae Jeon 84451dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 84551dd6249SNamjae Jeon 846e05df3b1SJaegeuk Kim return err; 847e05df3b1SJaegeuk Kim } 848e05df3b1SJaegeuk Kim 8490a8165d7SJaegeuk Kim /* 850e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 851e05df3b1SJaegeuk Kim */ 852e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 853e05df3b1SJaegeuk Kim { 8544081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 855e05df3b1SJaegeuk Kim int err = 0, cont = 1; 856e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8577dd690c8SJaegeuk Kim unsigned int nofs = 0; 85858bfaf44SJaegeuk Kim struct f2fs_inode *ri; 859e05df3b1SJaegeuk Kim struct dnode_of_data dn; 860e05df3b1SJaegeuk Kim struct page *page; 861e05df3b1SJaegeuk Kim 86251dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 86351dd6249SNamjae Jeon 86481ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 865ff373558SJaegeuk Kim 866e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 86751dd6249SNamjae Jeon if (IS_ERR(page)) { 86851dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 869e05df3b1SJaegeuk Kim return PTR_ERR(page); 87051dd6249SNamjae Jeon } 871e05df3b1SJaegeuk Kim 872e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 873e05df3b1SJaegeuk Kim unlock_page(page); 874e05df3b1SJaegeuk Kim 87558bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 876e05df3b1SJaegeuk Kim switch (level) { 877e05df3b1SJaegeuk Kim case 0: 878e05df3b1SJaegeuk Kim case 1: 879e05df3b1SJaegeuk Kim nofs = noffset[1]; 880e05df3b1SJaegeuk Kim break; 881e05df3b1SJaegeuk Kim case 2: 882e05df3b1SJaegeuk Kim nofs = noffset[1]; 883e05df3b1SJaegeuk Kim if (!offset[level - 1]) 884e05df3b1SJaegeuk Kim goto skip_partial; 88558bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 886e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 887e05df3b1SJaegeuk Kim goto fail; 888e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 889e05df3b1SJaegeuk Kim break; 890e05df3b1SJaegeuk Kim case 3: 891e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 892e05df3b1SJaegeuk Kim if (!offset[level - 1]) 893e05df3b1SJaegeuk Kim goto skip_partial; 89458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 895e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 896e05df3b1SJaegeuk Kim goto fail; 897e05df3b1SJaegeuk Kim break; 898e05df3b1SJaegeuk Kim default: 899e05df3b1SJaegeuk Kim BUG(); 900e05df3b1SJaegeuk Kim } 901e05df3b1SJaegeuk Kim 902e05df3b1SJaegeuk Kim skip_partial: 903e05df3b1SJaegeuk Kim while (cont) { 90458bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 905e05df3b1SJaegeuk Kim switch (offset[0]) { 906e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 907e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 908e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 909e05df3b1SJaegeuk Kim break; 910e05df3b1SJaegeuk Kim 911e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 912e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 913e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 914e05df3b1SJaegeuk Kim break; 915e05df3b1SJaegeuk Kim 916e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 917e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 918e05df3b1SJaegeuk Kim cont = 0; 919e05df3b1SJaegeuk Kim break; 920e05df3b1SJaegeuk Kim 921e05df3b1SJaegeuk Kim default: 922e05df3b1SJaegeuk Kim BUG(); 923e05df3b1SJaegeuk Kim } 924e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 925e05df3b1SJaegeuk Kim goto fail; 926e05df3b1SJaegeuk Kim if (offset[1] == 0 && 92758bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 928e05df3b1SJaegeuk Kim lock_page(page); 929ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 930fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 93158bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 932e05df3b1SJaegeuk Kim set_page_dirty(page); 933e05df3b1SJaegeuk Kim unlock_page(page); 934e05df3b1SJaegeuk Kim } 935e05df3b1SJaegeuk Kim offset[1] = 0; 936e05df3b1SJaegeuk Kim offset[0]++; 937e05df3b1SJaegeuk Kim nofs += err; 938e05df3b1SJaegeuk Kim } 939e05df3b1SJaegeuk Kim fail: 940e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 94151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 942e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 943e05df3b1SJaegeuk Kim } 944e05df3b1SJaegeuk Kim 9454f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 9464f16fb0fSJaegeuk Kim { 9474081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9484f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9494f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9504f16fb0fSJaegeuk Kim struct page *npage; 9514f16fb0fSJaegeuk Kim 9524f16fb0fSJaegeuk Kim if (!nid) 9534f16fb0fSJaegeuk Kim return 0; 9544f16fb0fSJaegeuk Kim 9554f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9564f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9574f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9584f16fb0fSJaegeuk Kim 959205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 96065985d93SJaegeuk Kim 96165985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 96265985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 96365985d93SJaegeuk Kim 9644f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 9654f16fb0fSJaegeuk Kim 9664f16fb0fSJaegeuk Kim if (page) 96701d2d1aaSChao Yu dn.inode_page_locked = true; 9684f16fb0fSJaegeuk Kim truncate_node(&dn); 9694f16fb0fSJaegeuk Kim return 0; 9704f16fb0fSJaegeuk Kim } 9714f16fb0fSJaegeuk Kim 97239936837SJaegeuk Kim /* 9734f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9744f4124d0SChao Yu * f2fs_unlock_op(). 97539936837SJaegeuk Kim */ 97613ec7297SChao Yu int remove_inode_page(struct inode *inode) 977e05df3b1SJaegeuk Kim { 978e05df3b1SJaegeuk Kim struct dnode_of_data dn; 97913ec7297SChao Yu int err; 980e05df3b1SJaegeuk Kim 981c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 98213ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 98313ec7297SChao Yu if (err) 98413ec7297SChao Yu return err; 985e05df3b1SJaegeuk Kim 98613ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 98713ec7297SChao Yu if (err) { 988c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 98913ec7297SChao Yu return err; 990e05df3b1SJaegeuk Kim } 991c2e69583SJaegeuk Kim 992c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 993c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 994c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 995c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 996c2e69583SJaegeuk Kim 997e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9989850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9999850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 1000c2e69583SJaegeuk Kim 1001c2e69583SJaegeuk Kim /* will put inode & node pages */ 1002e05df3b1SJaegeuk Kim truncate_node(&dn); 100313ec7297SChao Yu return 0; 1004e05df3b1SJaegeuk Kim } 1005e05df3b1SJaegeuk Kim 1006a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1007e05df3b1SJaegeuk Kim { 1008e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1009e05df3b1SJaegeuk Kim 1010e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1011e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 101244a83ff6SJaegeuk Kim 101344a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10148ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 1015e05df3b1SJaegeuk Kim } 1016e05df3b1SJaegeuk Kim 10178ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 10188ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 1019e05df3b1SJaegeuk Kim { 10204081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 1021e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1022e05df3b1SJaegeuk Kim struct page *page; 1023e05df3b1SJaegeuk Kim int err; 1024e05df3b1SJaegeuk Kim 102591942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1026e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1027e05df3b1SJaegeuk Kim 1028300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1029e05df3b1SJaegeuk Kim if (!page) 1030e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1031e05df3b1SJaegeuk Kim 10326bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 10339c02740cSJaegeuk Kim err = -ENOSPC; 10349c02740cSJaegeuk Kim goto fail; 10359c02740cSJaegeuk Kim } 1036e05df3b1SJaegeuk Kim 10379c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 1038e05df3b1SJaegeuk Kim 1039e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 10409850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 1041e05df3b1SJaegeuk Kim new_ni = old_ni; 1042e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 1043479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10449c02740cSJaegeuk Kim 1045fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10469c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1047398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 1048237c0790SJaegeuk Kim if (!PageUptodate(page)) 10499c02740cSJaegeuk Kim SetPageUptodate(page); 105012719ae1SJaegeuk Kim if (set_page_dirty(page)) 105112719ae1SJaegeuk Kim dn->node_changed = true; 1052e05df3b1SJaegeuk Kim 10534bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1054205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1055479bd73aSJaegeuk Kim 1056e05df3b1SJaegeuk Kim if (ofs == 0) 1057e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1058e05df3b1SJaegeuk Kim return page; 1059e05df3b1SJaegeuk Kim 1060e05df3b1SJaegeuk Kim fail: 106171e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1062e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1063e05df3b1SJaegeuk Kim return ERR_PTR(err); 1064e05df3b1SJaegeuk Kim } 1065e05df3b1SJaegeuk Kim 106656ae674cSJaegeuk Kim /* 106756ae674cSJaegeuk Kim * Caller should do after getting the following values. 106856ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 106986531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 107056ae674cSJaegeuk Kim */ 107193dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 1072e05df3b1SJaegeuk Kim { 10734081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1074e05df3b1SJaegeuk Kim struct node_info ni; 1075cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 107605ca3632SJaegeuk Kim .sbi = sbi, 1077cf04e8ebSJaegeuk Kim .type = NODE, 1078cf04e8ebSJaegeuk Kim .rw = rw, 107905ca3632SJaegeuk Kim .page = page, 10804375a336SJaegeuk Kim .encrypted_page = NULL, 1081cf04e8ebSJaegeuk Kim }; 1082e05df3b1SJaegeuk Kim 1083e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1084e05df3b1SJaegeuk Kim 10856bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10862bca1e23SJaegeuk Kim ClearPageUptodate(page); 1087e05df3b1SJaegeuk Kim return -ENOENT; 1088393ff91fSJaegeuk Kim } 1089393ff91fSJaegeuk Kim 109056ae674cSJaegeuk Kim if (PageUptodate(page)) 109156ae674cSJaegeuk Kim return LOCKED_PAGE; 1092393ff91fSJaegeuk Kim 10937a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 109405ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1095e05df3b1SJaegeuk Kim } 1096e05df3b1SJaegeuk Kim 10970a8165d7SJaegeuk Kim /* 1098e05df3b1SJaegeuk Kim * Readahead a node page 1099e05df3b1SJaegeuk Kim */ 1100e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1101e05df3b1SJaegeuk Kim { 1102e05df3b1SJaegeuk Kim struct page *apage; 110356ae674cSJaegeuk Kim int err; 1104e05df3b1SJaegeuk Kim 1105e8458725SChao Yu if (!nid) 1106e8458725SChao Yu return; 1107e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1108e8458725SChao Yu 1109999270deSFan Li rcu_read_lock(); 1110999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1111999270deSFan Li rcu_read_unlock(); 1112999270deSFan Li if (apage) 1113393ff91fSJaegeuk Kim return; 1114e05df3b1SJaegeuk Kim 1115300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1116e05df3b1SJaegeuk Kim if (!apage) 1117e05df3b1SJaegeuk Kim return; 1118e05df3b1SJaegeuk Kim 111956ae674cSJaegeuk Kim err = read_node_page(apage, READA); 112086531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1121e05df3b1SJaegeuk Kim } 1122e05df3b1SJaegeuk Kim 112317a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11240e022ea8SChao Yu struct page *parent, int start) 1125e05df3b1SJaegeuk Kim { 112656ae674cSJaegeuk Kim struct page *page; 112756ae674cSJaegeuk Kim int err; 11284aa69d56SJaegeuk Kim 11294aa69d56SJaegeuk Kim if (!nid) 11304aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11314aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1132afcb7ca0SJaegeuk Kim repeat: 1133300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1134e05df3b1SJaegeuk Kim if (!page) 1135e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1136e05df3b1SJaegeuk Kim 1137e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 113886531d6bSJaegeuk Kim if (err < 0) { 113986531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1140e05df3b1SJaegeuk Kim return ERR_PTR(err); 1141e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 1142e1c51b9fSChao Yu goto page_hit; 114386531d6bSJaegeuk Kim } 1144aaf96075SJaegeuk Kim 11450e022ea8SChao Yu if (parent) 114679344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11470e022ea8SChao Yu 1148e1c51b9fSChao Yu lock_page(page); 1149e1c51b9fSChao Yu 11504ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1151afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1152afcb7ca0SJaegeuk Kim goto repeat; 1153afcb7ca0SJaegeuk Kim } 11541563ac75SChao Yu 11551563ac75SChao Yu if (unlikely(!PageUptodate(page))) 11561563ac75SChao Yu goto out_err; 1157e1c51b9fSChao Yu page_hit: 11580c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 11590c9df7fbSYunlong Song f2fs_bug_on(sbi, 1); 11600c9df7fbSYunlong Song ClearPageUptodate(page); 11610c9df7fbSYunlong Song out_err: 11620c9df7fbSYunlong Song f2fs_put_page(page, 1); 11630c9df7fbSYunlong Song return ERR_PTR(-EIO); 11640c9df7fbSYunlong Song } 1165e05df3b1SJaegeuk Kim return page; 1166e05df3b1SJaegeuk Kim } 1167e05df3b1SJaegeuk Kim 11680e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11690e022ea8SChao Yu { 11700e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11710e022ea8SChao Yu } 11720e022ea8SChao Yu 1173e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1174e05df3b1SJaegeuk Kim { 11754081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11760e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1177e05df3b1SJaegeuk Kim 11780e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1179e05df3b1SJaegeuk Kim } 1180e05df3b1SJaegeuk Kim 11812049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 11822049d4fcSJaegeuk Kim { 11832049d4fcSJaegeuk Kim struct inode *inode; 11842049d4fcSJaegeuk Kim struct page *page; 11850f3311a8SChao Yu int ret; 11862049d4fcSJaegeuk Kim 11872049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 11882049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 11892049d4fcSJaegeuk Kim if (!inode) 11902049d4fcSJaegeuk Kim return; 11912049d4fcSJaegeuk Kim 11924a6de50dSJaegeuk Kim page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); 11932049d4fcSJaegeuk Kim if (!page) 11942049d4fcSJaegeuk Kim goto iput_out; 11952049d4fcSJaegeuk Kim 11962049d4fcSJaegeuk Kim if (!PageUptodate(page)) 11972049d4fcSJaegeuk Kim goto page_out; 11982049d4fcSJaegeuk Kim 11992049d4fcSJaegeuk Kim if (!PageDirty(page)) 12002049d4fcSJaegeuk Kim goto page_out; 12012049d4fcSJaegeuk Kim 12022049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12032049d4fcSJaegeuk Kim goto page_out; 12042049d4fcSJaegeuk Kim 12050f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12062049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 12070f3311a8SChao Yu if (ret) 12082049d4fcSJaegeuk Kim set_page_dirty(page); 12092049d4fcSJaegeuk Kim page_out: 12104a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12112049d4fcSJaegeuk Kim iput_out: 12122049d4fcSJaegeuk Kim iput(inode); 12132049d4fcSJaegeuk Kim } 12142049d4fcSJaegeuk Kim 1215da011cc0SChao Yu void move_node_page(struct page *node_page, int gc_type) 1216da011cc0SChao Yu { 1217da011cc0SChao Yu if (gc_type == FG_GC) { 1218da011cc0SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(node_page); 1219da011cc0SChao Yu struct writeback_control wbc = { 1220da011cc0SChao Yu .sync_mode = WB_SYNC_ALL, 1221da011cc0SChao Yu .nr_to_write = 1, 1222da011cc0SChao Yu .for_reclaim = 0, 1223da011cc0SChao Yu }; 1224da011cc0SChao Yu 1225da011cc0SChao Yu set_page_dirty(node_page); 1226da011cc0SChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true); 1227da011cc0SChao Yu 1228da011cc0SChao Yu f2fs_bug_on(sbi, PageWriteback(node_page)); 1229da011cc0SChao Yu if (!clear_page_dirty_for_io(node_page)) 1230da011cc0SChao Yu goto out_page; 1231da011cc0SChao Yu 1232da011cc0SChao Yu if (NODE_MAPPING(sbi)->a_ops->writepage(node_page, &wbc)) 1233da011cc0SChao Yu unlock_page(node_page); 1234da011cc0SChao Yu goto release_page; 1235da011cc0SChao Yu } else { 1236da011cc0SChao Yu /* set page dirty and write it */ 1237da011cc0SChao Yu if (!PageWriteback(node_page)) 1238da011cc0SChao Yu set_page_dirty(node_page); 1239da011cc0SChao Yu } 1240da011cc0SChao Yu out_page: 1241da011cc0SChao Yu unlock_page(node_page); 1242da011cc0SChao Yu release_page: 1243da011cc0SChao Yu f2fs_put_page(node_page, 0); 1244da011cc0SChao Yu } 1245da011cc0SChao Yu 1246608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1247e05df3b1SJaegeuk Kim { 1248e05df3b1SJaegeuk Kim pgoff_t index, end; 1249e05df3b1SJaegeuk Kim struct pagevec pvec; 1250608514deSJaegeuk Kim struct page *last_page = NULL; 125152681375SJaegeuk Kim 125252681375SJaegeuk Kim pagevec_init(&pvec, 0); 125352681375SJaegeuk Kim index = 0; 125452681375SJaegeuk Kim end = ULONG_MAX; 125552681375SJaegeuk Kim 125652681375SJaegeuk Kim while (index <= end) { 125752681375SJaegeuk Kim int i, nr_pages; 125852681375SJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 125952681375SJaegeuk Kim PAGECACHE_TAG_DIRTY, 126052681375SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 126152681375SJaegeuk Kim if (nr_pages == 0) 126252681375SJaegeuk Kim break; 126352681375SJaegeuk Kim 126452681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 126552681375SJaegeuk Kim struct page *page = pvec.pages[i]; 126652681375SJaegeuk Kim 126752681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1268608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 126952681375SJaegeuk Kim pagevec_release(&pvec); 1270608514deSJaegeuk Kim return ERR_PTR(-EIO); 127152681375SJaegeuk Kim } 127252681375SJaegeuk Kim 127352681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 127452681375SJaegeuk Kim continue; 127552681375SJaegeuk Kim if (ino_of_node(page) != ino) 127652681375SJaegeuk Kim continue; 127752681375SJaegeuk Kim 127852681375SJaegeuk Kim lock_page(page); 127952681375SJaegeuk Kim 128052681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 128152681375SJaegeuk Kim continue_unlock: 128252681375SJaegeuk Kim unlock_page(page); 128352681375SJaegeuk Kim continue; 128452681375SJaegeuk Kim } 128552681375SJaegeuk Kim if (ino_of_node(page) != ino) 128652681375SJaegeuk Kim goto continue_unlock; 128752681375SJaegeuk Kim 128852681375SJaegeuk Kim if (!PageDirty(page)) { 128952681375SJaegeuk Kim /* someone wrote it for us */ 129052681375SJaegeuk Kim goto continue_unlock; 129152681375SJaegeuk Kim } 129252681375SJaegeuk Kim 1293608514deSJaegeuk Kim if (last_page) 1294608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1295608514deSJaegeuk Kim 1296608514deSJaegeuk Kim get_page(page); 1297608514deSJaegeuk Kim last_page = page; 1298608514deSJaegeuk Kim unlock_page(page); 1299608514deSJaegeuk Kim } 1300608514deSJaegeuk Kim pagevec_release(&pvec); 1301608514deSJaegeuk Kim cond_resched(); 1302608514deSJaegeuk Kim } 1303608514deSJaegeuk Kim return last_page; 1304608514deSJaegeuk Kim } 1305608514deSJaegeuk Kim 130626de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1307608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1308608514deSJaegeuk Kim { 1309608514deSJaegeuk Kim pgoff_t index, end; 1310608514deSJaegeuk Kim struct pagevec pvec; 1311608514deSJaegeuk Kim int ret = 0; 1312608514deSJaegeuk Kim struct page *last_page = NULL; 1313608514deSJaegeuk Kim bool marked = false; 131426de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1315608514deSJaegeuk Kim 1316608514deSJaegeuk Kim if (atomic) { 1317608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1318608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1319608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1320608514deSJaegeuk Kim } 1321608514deSJaegeuk Kim retry: 1322608514deSJaegeuk Kim pagevec_init(&pvec, 0); 1323608514deSJaegeuk Kim index = 0; 1324608514deSJaegeuk Kim end = ULONG_MAX; 1325608514deSJaegeuk Kim 1326608514deSJaegeuk Kim while (index <= end) { 1327608514deSJaegeuk Kim int i, nr_pages; 1328608514deSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1329608514deSJaegeuk Kim PAGECACHE_TAG_DIRTY, 1330608514deSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1331608514deSJaegeuk Kim if (nr_pages == 0) 1332608514deSJaegeuk Kim break; 1333608514deSJaegeuk Kim 1334608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1335608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1336608514deSJaegeuk Kim 1337608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1338608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1339608514deSJaegeuk Kim pagevec_release(&pvec); 1340608514deSJaegeuk Kim return -EIO; 1341608514deSJaegeuk Kim } 1342608514deSJaegeuk Kim 1343608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1344608514deSJaegeuk Kim continue; 1345608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1346608514deSJaegeuk Kim continue; 1347608514deSJaegeuk Kim 1348608514deSJaegeuk Kim lock_page(page); 1349608514deSJaegeuk Kim 1350608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1351608514deSJaegeuk Kim continue_unlock: 1352608514deSJaegeuk Kim unlock_page(page); 1353608514deSJaegeuk Kim continue; 1354608514deSJaegeuk Kim } 1355608514deSJaegeuk Kim if (ino_of_node(page) != ino) 135652681375SJaegeuk Kim goto continue_unlock; 135752681375SJaegeuk Kim 1358608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1359608514deSJaegeuk Kim /* someone wrote it for us */ 1360608514deSJaegeuk Kim goto continue_unlock; 1361608514deSJaegeuk Kim } 1362608514deSJaegeuk Kim 1363608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1364608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1365608514deSJaegeuk Kim 1366608514deSJaegeuk Kim if (!atomic || page == last_page) { 136752681375SJaegeuk Kim set_fsync_mark(page, 1); 136826de9b11SJaegeuk Kim if (IS_INODE(page)) { 136926de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 137026de9b11SJaegeuk Kim FI_DIRTY_INODE)) 137126de9b11SJaegeuk Kim update_inode(inode, page); 137252681375SJaegeuk Kim set_dentry_mark(page, 137352681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 137426de9b11SJaegeuk Kim } 1375608514deSJaegeuk Kim /* may be written by other thread */ 1376608514deSJaegeuk Kim if (!PageDirty(page)) 1377608514deSJaegeuk Kim set_page_dirty(page); 1378608514deSJaegeuk Kim } 1379608514deSJaegeuk Kim 1380608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1381608514deSJaegeuk Kim goto continue_unlock; 138252681375SJaegeuk Kim 1383c267ec15SJaegeuk Kim ret = NODE_MAPPING(sbi)->a_ops->writepage(page, wbc); 1384c267ec15SJaegeuk Kim if (ret) { 138552681375SJaegeuk Kim unlock_page(page); 1386608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1387608514deSJaegeuk Kim break; 1388608514deSJaegeuk Kim } 1389608514deSJaegeuk Kim if (page == last_page) { 1390608514deSJaegeuk Kim f2fs_put_page(page, 0); 1391608514deSJaegeuk Kim marked = true; 139252681375SJaegeuk Kim break; 139352681375SJaegeuk Kim } 1394c267ec15SJaegeuk Kim } 139552681375SJaegeuk Kim pagevec_release(&pvec); 139652681375SJaegeuk Kim cond_resched(); 139752681375SJaegeuk Kim 1398608514deSJaegeuk Kim if (ret || marked) 139952681375SJaegeuk Kim break; 140052681375SJaegeuk Kim } 1401608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1402608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1403608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1404608514deSJaegeuk Kim ino, last_page->index); 1405608514deSJaegeuk Kim lock_page(last_page); 1406608514deSJaegeuk Kim set_page_dirty(last_page); 1407608514deSJaegeuk Kim unlock_page(last_page); 1408608514deSJaegeuk Kim goto retry; 1409608514deSJaegeuk Kim } 1410c267ec15SJaegeuk Kim return ret ? -EIO: 0; 141152681375SJaegeuk Kim } 141252681375SJaegeuk Kim 141352681375SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc) 141452681375SJaegeuk Kim { 141552681375SJaegeuk Kim pgoff_t index, end; 141652681375SJaegeuk Kim struct pagevec pvec; 141752681375SJaegeuk Kim int step = 0; 141812bb0a8fSJaegeuk Kim int nwritten = 0; 1419e05df3b1SJaegeuk Kim 1420e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1421e05df3b1SJaegeuk Kim 1422e05df3b1SJaegeuk Kim next_step: 1423e05df3b1SJaegeuk Kim index = 0; 142480dd9c0eSChao Yu end = ULONG_MAX; 1425e05df3b1SJaegeuk Kim 1426e05df3b1SJaegeuk Kim while (index <= end) { 1427e05df3b1SJaegeuk Kim int i, nr_pages; 14284ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1429e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1430e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1431e05df3b1SJaegeuk Kim if (nr_pages == 0) 1432e05df3b1SJaegeuk Kim break; 1433e05df3b1SJaegeuk Kim 1434e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1435e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1436e05df3b1SJaegeuk Kim 14376d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 14386d5a1495SChao Yu pagevec_release(&pvec); 14396d5a1495SChao Yu return -EIO; 14406d5a1495SChao Yu } 14416d5a1495SChao Yu 1442e05df3b1SJaegeuk Kim /* 1443e05df3b1SJaegeuk Kim * flushing sequence with step: 1444e05df3b1SJaegeuk Kim * 0. indirect nodes 1445e05df3b1SJaegeuk Kim * 1. dentry dnodes 1446e05df3b1SJaegeuk Kim * 2. file dnodes 1447e05df3b1SJaegeuk Kim */ 1448e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1449e05df3b1SJaegeuk Kim continue; 1450e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1451e05df3b1SJaegeuk Kim is_cold_node(page))) 1452e05df3b1SJaegeuk Kim continue; 1453e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1454e05df3b1SJaegeuk Kim !is_cold_node(page))) 1455e05df3b1SJaegeuk Kim continue; 14569a4cbc9eSChao Yu lock_node: 145752681375SJaegeuk Kim if (!trylock_page(page)) 1458e05df3b1SJaegeuk Kim continue; 1459e05df3b1SJaegeuk Kim 14604ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1461e05df3b1SJaegeuk Kim continue_unlock: 1462e05df3b1SJaegeuk Kim unlock_page(page); 1463e05df3b1SJaegeuk Kim continue; 1464e05df3b1SJaegeuk Kim } 1465e05df3b1SJaegeuk Kim 1466e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1467e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1468e05df3b1SJaegeuk Kim goto continue_unlock; 1469e05df3b1SJaegeuk Kim } 1470e05df3b1SJaegeuk Kim 14712049d4fcSJaegeuk Kim /* flush inline_data */ 147252681375SJaegeuk Kim if (is_inline_node(page)) { 14732049d4fcSJaegeuk Kim clear_inline_node(page); 14742049d4fcSJaegeuk Kim unlock_page(page); 14752049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 14769a4cbc9eSChao Yu goto lock_node; 14772049d4fcSJaegeuk Kim } 14782049d4fcSJaegeuk Kim 1479fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1480fa3d2bdfSJaegeuk Kim 1481fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1482e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1483e05df3b1SJaegeuk Kim goto continue_unlock; 1484e05df3b1SJaegeuk Kim 1485e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1486e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 148752746519SJaegeuk Kim 148852746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 148952746519SJaegeuk Kim unlock_page(page); 1490e05df3b1SJaegeuk Kim 1491e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1492e05df3b1SJaegeuk Kim break; 1493e05df3b1SJaegeuk Kim } 1494e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1495e05df3b1SJaegeuk Kim cond_resched(); 1496e05df3b1SJaegeuk Kim 1497e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1498e05df3b1SJaegeuk Kim step = 2; 1499e05df3b1SJaegeuk Kim break; 1500e05df3b1SJaegeuk Kim } 1501e05df3b1SJaegeuk Kim } 1502e05df3b1SJaegeuk Kim 1503e05df3b1SJaegeuk Kim if (step < 2) { 1504e05df3b1SJaegeuk Kim step++; 1505e05df3b1SJaegeuk Kim goto next_step; 1506e05df3b1SJaegeuk Kim } 1507e05df3b1SJaegeuk Kim return nwritten; 1508e05df3b1SJaegeuk Kim } 1509e05df3b1SJaegeuk Kim 1510cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1511cfe58f9dSJaegeuk Kim { 151280dd9c0eSChao Yu pgoff_t index = 0, end = ULONG_MAX; 1513cfe58f9dSJaegeuk Kim struct pagevec pvec; 1514cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1515cfe58f9dSJaegeuk Kim 1516cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 15174ef51a8fSJaegeuk Kim 15184ef51a8fSJaegeuk Kim while (index <= end) { 15194ef51a8fSJaegeuk Kim int i, nr_pages; 15204ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1521cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 15224ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 15234ef51a8fSJaegeuk Kim if (nr_pages == 0) 15244ef51a8fSJaegeuk Kim break; 1525cfe58f9dSJaegeuk Kim 1526cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1527cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1528cfe58f9dSJaegeuk Kim 1529cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1530cfb271d4SChao Yu if (unlikely(page->index > end)) 1531cfe58f9dSJaegeuk Kim continue; 1532cfe58f9dSJaegeuk Kim 15334bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1534fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1535cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1536cfe58f9dSJaegeuk Kim ret = -EIO; 1537cfe58f9dSJaegeuk Kim } 15384bf08ff6SChao Yu } 1539cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1540cfe58f9dSJaegeuk Kim cond_resched(); 1541cfe58f9dSJaegeuk Kim } 1542cfe58f9dSJaegeuk Kim 15434ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1544cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 15454ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1546cfe58f9dSJaegeuk Kim ret2 = -EIO; 1547cfe58f9dSJaegeuk Kim if (!ret) 1548cfe58f9dSJaegeuk Kim ret = ret2; 1549cfe58f9dSJaegeuk Kim return ret; 1550cfe58f9dSJaegeuk Kim } 1551cfe58f9dSJaegeuk Kim 1552e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1553e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1554e05df3b1SJaegeuk Kim { 15554081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1556e05df3b1SJaegeuk Kim nid_t nid; 1557e05df3b1SJaegeuk Kim struct node_info ni; 1558fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 155905ca3632SJaegeuk Kim .sbi = sbi, 1560fb5566daSJaegeuk Kim .type = NODE, 1561fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 156205ca3632SJaegeuk Kim .page = page, 15634375a336SJaegeuk Kim .encrypted_page = NULL, 1564fb5566daSJaegeuk Kim }; 1565e05df3b1SJaegeuk Kim 1566ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1567ecda0de3SChao Yu 1568caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 156987a9bd26SJaegeuk Kim goto redirty_out; 1570cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1571cf779cabSJaegeuk Kim goto redirty_out; 157287a9bd26SJaegeuk Kim 1573e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1574e05df3b1SJaegeuk Kim nid = nid_of_node(page); 15759850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1576e05df3b1SJaegeuk Kim 157725b93346SJaegeuk Kim if (wbc->for_reclaim) { 157825b93346SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 157925b93346SJaegeuk Kim goto redirty_out; 158025b93346SJaegeuk Kim } else { 158125b93346SJaegeuk Kim down_read(&sbi->node_write); 158225b93346SJaegeuk Kim } 158325b93346SJaegeuk Kim 1584e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1585e05df3b1SJaegeuk Kim 1586e05df3b1SJaegeuk Kim /* This page is already truncated */ 15876bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 15882bca1e23SJaegeuk Kim ClearPageUptodate(page); 158939936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 159025b93346SJaegeuk Kim up_read(&sbi->node_write); 159139936837SJaegeuk Kim unlock_page(page); 159239936837SJaegeuk Kim return 0; 159339936837SJaegeuk Kim } 1594e05df3b1SJaegeuk Kim 1595e05df3b1SJaegeuk Kim set_page_writeback(page); 15967a9d7548SChao Yu fio.old_blkaddr = ni.blk_addr; 159705ca3632SJaegeuk Kim write_node_page(nid, &fio); 15987a9d7548SChao Yu set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1599e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1600b3582c68SChao Yu up_read(&sbi->node_write); 16010c3a5797SChao Yu 16020c3a5797SChao Yu if (wbc->for_reclaim) 16030c3a5797SChao Yu f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, NODE, WRITE); 16040c3a5797SChao Yu 1605e05df3b1SJaegeuk Kim unlock_page(page); 160627c6bd60SJaegeuk Kim 16070c3a5797SChao Yu if (unlikely(f2fs_cp_error(sbi))) 160827c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 160927c6bd60SJaegeuk Kim 1610e05df3b1SJaegeuk Kim return 0; 161187a9bd26SJaegeuk Kim 161287a9bd26SJaegeuk Kim redirty_out: 161376f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 161487a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1615e05df3b1SJaegeuk Kim } 1616e05df3b1SJaegeuk Kim 1617e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1618e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1619e05df3b1SJaegeuk Kim { 16204081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 162150c8cdb3SJaegeuk Kim long diff; 1622e05df3b1SJaegeuk Kim 16234660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 16244660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1625e05df3b1SJaegeuk Kim 1626a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 162787d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1628d3baf95dSJaegeuk Kim goto skip_write; 1629a7fdffbdSJaegeuk Kim 1630d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1631d31c7c3fSYunlei He 163250c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1633fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 163452681375SJaegeuk Kim sync_node_pages(sbi, wbc); 163550c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1636e05df3b1SJaegeuk Kim return 0; 1637d3baf95dSJaegeuk Kim 1638d3baf95dSJaegeuk Kim skip_write: 1639d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1640d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1641d3baf95dSJaegeuk Kim return 0; 1642e05df3b1SJaegeuk Kim } 1643e05df3b1SJaegeuk Kim 1644e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1645e05df3b1SJaegeuk Kim { 164626c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 164726c6b887SJaegeuk Kim 1648237c0790SJaegeuk Kim if (!PageUptodate(page)) 1649e05df3b1SJaegeuk Kim SetPageUptodate(page); 1650e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1651fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 16524081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1653e05df3b1SJaegeuk Kim SetPagePrivate(page); 16549e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1655e05df3b1SJaegeuk Kim return 1; 1656e05df3b1SJaegeuk Kim } 1657e05df3b1SJaegeuk Kim return 0; 1658e05df3b1SJaegeuk Kim } 1659e05df3b1SJaegeuk Kim 16600a8165d7SJaegeuk Kim /* 1661e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1662e05df3b1SJaegeuk Kim */ 1663e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1664e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1665e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1666e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1667487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1668487261f3SChao Yu .releasepage = f2fs_release_page, 1669e05df3b1SJaegeuk Kim }; 1670e05df3b1SJaegeuk Kim 16718a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 16728a7ed66aSJaegeuk Kim nid_t n) 1673e05df3b1SJaegeuk Kim { 16748a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 16753aa770a9SNamjae Jeon } 1676e05df3b1SJaegeuk Kim 16778a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 16788a7ed66aSJaegeuk Kim struct free_nid *i) 1679e05df3b1SJaegeuk Kim { 1680e05df3b1SJaegeuk Kim list_del(&i->list); 16818a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1682e05df3b1SJaegeuk Kim } 1683e05df3b1SJaegeuk Kim 16846fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1685e05df3b1SJaegeuk Kim { 16866fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1687e05df3b1SJaegeuk Kim struct free_nid *i; 168859bbd474SJaegeuk Kim struct nat_entry *ne; 1689e05df3b1SJaegeuk Kim 16906fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 169123d38844SHaicheng Li return -1; 16929198acebSJaegeuk Kim 16939198acebSJaegeuk Kim /* 0 nid should not be used */ 1694cfb271d4SChao Yu if (unlikely(nid == 0)) 16959198acebSJaegeuk Kim return 0; 169659bbd474SJaegeuk Kim 16977bd59381SGu Zheng if (build) { 169859bbd474SJaegeuk Kim /* do not add allocated nids */ 169959bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1700a5131193SJaegeuk Kim if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 17017ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 170259bbd474SJaegeuk Kim return 0; 1703e05df3b1SJaegeuk Kim } 17047bd59381SGu Zheng 17057bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1706e05df3b1SJaegeuk Kim i->nid = nid; 1707e05df3b1SJaegeuk Kim i->state = NID_NEW; 1708e05df3b1SJaegeuk Kim 1709769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1710769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1711769ec6e5SJaegeuk Kim return 0; 1712769ec6e5SJaegeuk Kim } 1713769ec6e5SJaegeuk Kim 1714e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17158a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1716e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1717769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1718e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1719e05df3b1SJaegeuk Kim return 0; 1720e05df3b1SJaegeuk Kim } 1721e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1722e05df3b1SJaegeuk Kim nm_i->fcnt++; 1723e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1724769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1725e05df3b1SJaegeuk Kim return 1; 1726e05df3b1SJaegeuk Kim } 1727e05df3b1SJaegeuk Kim 1728e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1729e05df3b1SJaegeuk Kim { 1730e05df3b1SJaegeuk Kim struct free_nid *i; 1731cf0ee0f0SChao Yu bool need_free = false; 1732cf0ee0f0SChao Yu 1733e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17348a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1735e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 17368a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1737e05df3b1SJaegeuk Kim nm_i->fcnt--; 1738cf0ee0f0SChao Yu need_free = true; 1739e05df3b1SJaegeuk Kim } 1740e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1741cf0ee0f0SChao Yu 1742cf0ee0f0SChao Yu if (need_free) 1743cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1744e05df3b1SJaegeuk Kim } 1745e05df3b1SJaegeuk Kim 17466fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1747e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1748e05df3b1SJaegeuk Kim { 17496fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1750e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1751e05df3b1SJaegeuk Kim block_t blk_addr; 1752e05df3b1SJaegeuk Kim int i; 1753e05df3b1SJaegeuk Kim 1754e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1755e05df3b1SJaegeuk Kim 1756e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 175723d38844SHaicheng Li 1758cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 175904431c44SJaegeuk Kim break; 176023d38844SHaicheng Li 1761e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 17629850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 176323d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 17646fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 176523d38844SHaicheng Li break; 176623d38844SHaicheng Li } 1767e05df3b1SJaegeuk Kim } 1768e05df3b1SJaegeuk Kim } 1769e05df3b1SJaegeuk Kim 1770ad4edb83SJaegeuk Kim void build_free_nids(struct f2fs_sb_info *sbi) 1771e05df3b1SJaegeuk Kim { 1772e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1773e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1774b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 17758760952dSHaicheng Li int i = 0; 177655008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1777e05df3b1SJaegeuk Kim 177855008d84SJaegeuk Kim /* Enough entries */ 1779ad4edb83SJaegeuk Kim if (nm_i->fcnt >= NAT_ENTRY_PER_BLOCK) 178055008d84SJaegeuk Kim return; 1781e05df3b1SJaegeuk Kim 178255008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 178326879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 178426879fb1SChao Yu META_NAT, true); 1785e05df3b1SJaegeuk Kim 1786a5131193SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 1787a5131193SJaegeuk Kim 1788e05df3b1SJaegeuk Kim while (1) { 1789e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1790e05df3b1SJaegeuk Kim 17916fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1792e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1793e05df3b1SJaegeuk Kim 1794e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1795cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1796e05df3b1SJaegeuk Kim nid = 0; 179755008d84SJaegeuk Kim 1798a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1799e05df3b1SJaegeuk Kim break; 1800e05df3b1SJaegeuk Kim } 1801e05df3b1SJaegeuk Kim 180255008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 180355008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1804e05df3b1SJaegeuk Kim 1805e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1806b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 1807dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 1808dfc08a12SChao Yu block_t addr; 1809dfc08a12SChao Yu 1810dfc08a12SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 1811dfc08a12SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 1812e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 18136fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1814e05df3b1SJaegeuk Kim else 1815e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1816e05df3b1SJaegeuk Kim } 1817b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 1818a5131193SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 18192db2388fSChao Yu 18202db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 1821ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 1822e05df3b1SJaegeuk Kim } 1823e05df3b1SJaegeuk Kim 1824e05df3b1SJaegeuk Kim /* 1825e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1826e05df3b1SJaegeuk Kim * from second parameter of this function. 1827e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1828e05df3b1SJaegeuk Kim */ 1829e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1830e05df3b1SJaegeuk Kim { 1831e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1832e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1833e05df3b1SJaegeuk Kim retry: 1834cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 1835cb78942bSJaegeuk Kim if (time_to_inject(FAULT_ALLOC_NID)) 1836cb78942bSJaegeuk Kim return false; 1837cb78942bSJaegeuk Kim #endif 18387ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1839e05df3b1SJaegeuk Kim return false; 1840e05df3b1SJaegeuk Kim 1841e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1842e05df3b1SJaegeuk Kim 184355008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1844f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 18459850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 18462d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1847e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1848e05df3b1SJaegeuk Kim break; 1849e05df3b1SJaegeuk Kim 18509850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1851e05df3b1SJaegeuk Kim *nid = i->nid; 1852e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1853e05df3b1SJaegeuk Kim nm_i->fcnt--; 1854e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1855e05df3b1SJaegeuk Kim return true; 1856e05df3b1SJaegeuk Kim } 185755008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 185855008d84SJaegeuk Kim 185955008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 186055008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 186155008d84SJaegeuk Kim build_free_nids(sbi); 186255008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 186355008d84SJaegeuk Kim goto retry; 186455008d84SJaegeuk Kim } 1865e05df3b1SJaegeuk Kim 18660a8165d7SJaegeuk Kim /* 1867e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1868e05df3b1SJaegeuk Kim */ 1869e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1870e05df3b1SJaegeuk Kim { 1871e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1872e05df3b1SJaegeuk Kim struct free_nid *i; 1873e05df3b1SJaegeuk Kim 1874e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 18758a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 18769850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 18778a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1878e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1879cf0ee0f0SChao Yu 1880cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1881e05df3b1SJaegeuk Kim } 1882e05df3b1SJaegeuk Kim 18830a8165d7SJaegeuk Kim /* 1884e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1885e05df3b1SJaegeuk Kim */ 1886e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1887e05df3b1SJaegeuk Kim { 188849952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 188949952fa1SJaegeuk Kim struct free_nid *i; 1890cf0ee0f0SChao Yu bool need_free = false; 189149952fa1SJaegeuk Kim 189265985d93SJaegeuk Kim if (!nid) 189365985d93SJaegeuk Kim return; 189465985d93SJaegeuk Kim 189549952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 18968a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 18979850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 18986fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 18998a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1900cf0ee0f0SChao Yu need_free = true; 190195630cbaSHaicheng Li } else { 190249952fa1SJaegeuk Kim i->state = NID_NEW; 190349952fa1SJaegeuk Kim nm_i->fcnt++; 190495630cbaSHaicheng Li } 190549952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1906cf0ee0f0SChao Yu 1907cf0ee0f0SChao Yu if (need_free) 1908cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1909e05df3b1SJaegeuk Kim } 1910e05df3b1SJaegeuk Kim 191131696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 191231696580SChao Yu { 191331696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 191431696580SChao Yu struct free_nid *i, *next; 191531696580SChao Yu int nr = nr_shrink; 191631696580SChao Yu 1917ad4edb83SJaegeuk Kim if (nm_i->fcnt <= MAX_FREE_NIDS) 1918ad4edb83SJaegeuk Kim return 0; 1919ad4edb83SJaegeuk Kim 192031696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 192131696580SChao Yu return 0; 192231696580SChao Yu 192331696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 192431696580SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 1925ad4edb83SJaegeuk Kim if (nr_shrink <= 0 || nm_i->fcnt <= MAX_FREE_NIDS) 192631696580SChao Yu break; 192731696580SChao Yu if (i->state == NID_ALLOC) 192831696580SChao Yu continue; 192931696580SChao Yu __del_from_free_nid_list(nm_i, i); 193031696580SChao Yu kmem_cache_free(free_nid_slab, i); 1931f7409d0fSJaegeuk Kim nm_i->fcnt--; 193231696580SChao Yu nr_shrink--; 193331696580SChao Yu } 193431696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 193531696580SChao Yu mutex_unlock(&nm_i->build_lock); 193631696580SChao Yu 193731696580SChao Yu return nr - nr_shrink; 193831696580SChao Yu } 193931696580SChao Yu 194070cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 194128cdce04SChao Yu { 194228cdce04SChao Yu void *src_addr, *dst_addr; 194328cdce04SChao Yu size_t inline_size; 194428cdce04SChao Yu struct page *ipage; 194528cdce04SChao Yu struct f2fs_inode *ri; 194628cdce04SChao Yu 19474081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 19489850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 194928cdce04SChao Yu 1950e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1951e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 195291942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 1953e3b4d43fSJaegeuk Kim goto update_inode; 1954e3b4d43fSJaegeuk Kim } 1955e3b4d43fSJaegeuk Kim 195628cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 195728cdce04SChao Yu src_addr = inline_xattr_addr(page); 195828cdce04SChao Yu inline_size = inline_xattr_size(inode); 195928cdce04SChao Yu 1960fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 196128cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1962e3b4d43fSJaegeuk Kim update_inode: 196328cdce04SChao Yu update_inode(inode, ipage); 196428cdce04SChao Yu f2fs_put_page(ipage, 1); 196528cdce04SChao Yu } 196628cdce04SChao Yu 19671c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1968abb2366cSJaegeuk Kim { 19694081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1970abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1971abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1972abb2366cSJaegeuk Kim struct node_info ni; 1973abb2366cSJaegeuk Kim 1974abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1975abb2366cSJaegeuk Kim if (!prev_xnid) 1976abb2366cSJaegeuk Kim goto recover_xnid; 1977abb2366cSJaegeuk Kim 1978abb2366cSJaegeuk Kim /* Deallocate node address */ 1979abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 19809850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1981abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1982abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1983479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1984abb2366cSJaegeuk Kim 1985abb2366cSJaegeuk Kim recover_xnid: 1986abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1987abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 19889850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1989abb2366cSJaegeuk Kim 1990abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1991abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1992abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 1993479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 1994205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, new_xnid); 1995abb2366cSJaegeuk Kim 1996abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 1997abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 1998479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 1999abb2366cSJaegeuk Kim } 2000abb2366cSJaegeuk Kim 2001e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2002e05df3b1SJaegeuk Kim { 200358bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2004e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2005e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2006e05df3b1SJaegeuk Kim struct page *ipage; 2007e05df3b1SJaegeuk Kim 2008e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2009e8271fa3SJaegeuk Kim 2010e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2011e8271fa3SJaegeuk Kim return -EINVAL; 2012e8271fa3SJaegeuk Kim 2013300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2014e05df3b1SJaegeuk Kim if (!ipage) 2015e05df3b1SJaegeuk Kim return -ENOMEM; 2016e05df3b1SJaegeuk Kim 2017e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2018e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 2019e05df3b1SJaegeuk Kim 2020237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2021e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2022e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2023e05df3b1SJaegeuk Kim 202458bfaf44SJaegeuk Kim src = F2FS_INODE(page); 202558bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2026e05df3b1SJaegeuk Kim 202758bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 202858bfaf44SJaegeuk Kim dst->i_size = 0; 202958bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 203058bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 203158bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 2032617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 2033e05df3b1SJaegeuk Kim 2034e05df3b1SJaegeuk Kim new_ni = old_ni; 2035e05df3b1SJaegeuk Kim new_ni.ino = ino; 2036e05df3b1SJaegeuk Kim 2037cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 203865e5cd0aSJaegeuk Kim WARN_ON(1); 2039479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2040e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2041617deb8cSJaegeuk Kim set_page_dirty(ipage); 2042e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2043e05df3b1SJaegeuk Kim return 0; 2044e05df3b1SJaegeuk Kim } 2045e05df3b1SJaegeuk Kim 2046e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 2047e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2048e05df3b1SJaegeuk Kim { 2049e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2050e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2051e05df3b1SJaegeuk Kim block_t addr; 205290a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 20539ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2054e05df3b1SJaegeuk Kim 2055e05df3b1SJaegeuk Kim /* scan the node segment */ 2056e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2057e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2058e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2059e05df3b1SJaegeuk Kim 20609ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 20619af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 2062393ff91fSJaegeuk Kim 20639af0ff1cSChao Yu /* readahead node pages */ 206426879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 20659af0ff1cSChao Yu 20669ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 20672b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2068393ff91fSJaegeuk Kim 20699ecf4b80SChao Yu rn = F2FS_NODE(page); 2070393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2071393ff91fSJaegeuk Kim sum_entry->version = 0; 2072393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 20739af0ff1cSChao Yu sum_entry++; 20749ecf4b80SChao Yu f2fs_put_page(page, 1); 20759af0ff1cSChao Yu } 2076bac4eef6SChao Yu 20779ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2078bac4eef6SChao Yu addr + nrpages); 20799af0ff1cSChao Yu } 20809ecf4b80SChao Yu return 0; 2081e05df3b1SJaegeuk Kim } 2082e05df3b1SJaegeuk Kim 2083aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2084e05df3b1SJaegeuk Kim { 2085e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2086e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2087b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2088e05df3b1SJaegeuk Kim int i; 2089e05df3b1SJaegeuk Kim 2090b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2091dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2092e05df3b1SJaegeuk Kim struct nat_entry *ne; 2093e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2094dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2095e05df3b1SJaegeuk Kim 2096dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 20979be32d72SJaegeuk Kim 2098e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2099e05df3b1SJaegeuk Kim if (!ne) { 21009be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 210194dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 21029be32d72SJaegeuk Kim } 2103e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2104e05df3b1SJaegeuk Kim } 2105dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2106b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2107e05df3b1SJaegeuk Kim } 2108e05df3b1SJaegeuk Kim 2109309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2110309cc2b6SJaegeuk Kim struct list_head *head, int max) 2111e05df3b1SJaegeuk Kim { 2112309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2113e05df3b1SJaegeuk Kim 2114309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2115309cc2b6SJaegeuk Kim goto add_out; 2116e05df3b1SJaegeuk Kim 2117309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2118309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2119309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2120309cc2b6SJaegeuk Kim return; 2121309cc2b6SJaegeuk Kim } 2122309cc2b6SJaegeuk Kim } 2123309cc2b6SJaegeuk Kim add_out: 2124309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2125aec71382SChao Yu } 2126aec71382SChao Yu 2127309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 2128309cc2b6SJaegeuk Kim struct nat_entry_set *set) 2129309cc2b6SJaegeuk Kim { 2130309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2131b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2132309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2133309cc2b6SJaegeuk Kim bool to_journal = true; 2134309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2135309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2136309cc2b6SJaegeuk Kim struct page *page = NULL; 2137aec71382SChao Yu 2138aec71382SChao Yu /* 2139aec71382SChao Yu * there are two steps to flush nat entries: 2140aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2141aec71382SChao Yu * #2, flush nat entries to nat page. 2142aec71382SChao Yu */ 2143dfc08a12SChao Yu if (!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2144aec71382SChao Yu to_journal = false; 2145aec71382SChao Yu 2146aec71382SChao Yu if (to_journal) { 2147b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2148aec71382SChao Yu } else { 2149e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2150e05df3b1SJaegeuk Kim nat_blk = page_address(page); 21519850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2152e05df3b1SJaegeuk Kim } 2153e05df3b1SJaegeuk Kim 2154aec71382SChao Yu /* flush dirty nats in nat entry set */ 2155309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2156aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2157aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2158aec71382SChao Yu int offset; 2159aec71382SChao Yu 2160309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 2161309cc2b6SJaegeuk Kim continue; 2162309cc2b6SJaegeuk Kim 2163aec71382SChao Yu if (to_journal) { 2164dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2165aec71382SChao Yu NAT_JOURNAL, nid, 1); 21669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2167dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2168dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2169aec71382SChao Yu } else { 2170aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2171aec71382SChao Yu } 2172aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 217388bd02c9SJaegeuk Kim nat_reset_flag(ne); 2174309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 2175309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 2176309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 2177e05df3b1SJaegeuk Kim } 2178aec71382SChao Yu 2179aec71382SChao Yu if (to_journal) 2180b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2181aec71382SChao Yu else 2182e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2183aec71382SChao Yu 218480ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 218580ec2e91SChangman Lee 2186309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2187309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2188309cc2b6SJaegeuk Kim } 2189aec71382SChao Yu 2190309cc2b6SJaegeuk Kim /* 2191309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2192309cc2b6SJaegeuk Kim */ 2193309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 2194309cc2b6SJaegeuk Kim { 2195309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2196309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2197b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 21987aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2199309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2200309cc2b6SJaegeuk Kim unsigned int found; 2201309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2202309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2203309cc2b6SJaegeuk Kim 220420d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 220520d047c8SChangman Lee return; 2206a5131193SJaegeuk Kim 2207a5131193SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2208a5131193SJaegeuk Kim 2209309cc2b6SJaegeuk Kim /* 2210309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2211309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2212309cc2b6SJaegeuk Kim * into nat entry set. 2213309cc2b6SJaegeuk Kim */ 2214dfc08a12SChao Yu if (!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2215309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2216309cc2b6SJaegeuk Kim 2217309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 22187aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2219309cc2b6SJaegeuk Kim unsigned idx; 2220309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2221309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2222309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2223dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2224309cc2b6SJaegeuk Kim } 2225309cc2b6SJaegeuk Kim 2226309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2227309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 2228309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 2229309cc2b6SJaegeuk Kim 2230a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2231a5131193SJaegeuk Kim 22329850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 2233e05df3b1SJaegeuk Kim } 2234e05df3b1SJaegeuk Kim 2235e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2236e05df3b1SJaegeuk Kim { 2237e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2238e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2239e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 2240e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 2241e05df3b1SJaegeuk Kim 2242e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2243e05df3b1SJaegeuk Kim 2244e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2245e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 2246e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 2247b63da15eSJaegeuk Kim 22487ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 22497ee0eeabSJaegeuk Kim 2250b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 2251c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 2252e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 2253e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2254cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2255ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 22562304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2257e05df3b1SJaegeuk Kim 22588a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2259e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 2260769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2261769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2262e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2263e05df3b1SJaegeuk Kim 2264e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2265e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 22668b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2267e05df3b1SJaegeuk Kim 2268e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 226979b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2270e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2271e05df3b1SJaegeuk Kim if (!version_bitmap) 2272e05df3b1SJaegeuk Kim return -EFAULT; 2273e05df3b1SJaegeuk Kim 227479b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 227579b5793bSAlexandru Gheorghiu GFP_KERNEL); 227679b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 227779b5793bSAlexandru Gheorghiu return -ENOMEM; 2278e05df3b1SJaegeuk Kim return 0; 2279e05df3b1SJaegeuk Kim } 2280e05df3b1SJaegeuk Kim 2281e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2282e05df3b1SJaegeuk Kim { 2283e05df3b1SJaegeuk Kim int err; 2284e05df3b1SJaegeuk Kim 2285e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2286e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2287e05df3b1SJaegeuk Kim return -ENOMEM; 2288e05df3b1SJaegeuk Kim 2289e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2290e05df3b1SJaegeuk Kim if (err) 2291e05df3b1SJaegeuk Kim return err; 2292e05df3b1SJaegeuk Kim 2293e05df3b1SJaegeuk Kim build_free_nids(sbi); 2294e05df3b1SJaegeuk Kim return 0; 2295e05df3b1SJaegeuk Kim } 2296e05df3b1SJaegeuk Kim 2297e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2298e05df3b1SJaegeuk Kim { 2299e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2300e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2301e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 23027aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2303e05df3b1SJaegeuk Kim nid_t nid = 0; 2304e05df3b1SJaegeuk Kim unsigned int found; 2305e05df3b1SJaegeuk Kim 2306e05df3b1SJaegeuk Kim if (!nm_i) 2307e05df3b1SJaegeuk Kim return; 2308e05df3b1SJaegeuk Kim 2309e05df3b1SJaegeuk Kim /* destroy free nid list */ 2310e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2311e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 23129850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 23138a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2314e05df3b1SJaegeuk Kim nm_i->fcnt--; 2315cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2316cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2317cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2318e05df3b1SJaegeuk Kim } 23199850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2320e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2321e05df3b1SJaegeuk Kim 2322e05df3b1SJaegeuk Kim /* destroy nat cache */ 23238b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2324e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2325e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2326e05df3b1SJaegeuk Kim unsigned idx; 23277aed0d45SJaegeuk Kim 2328b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2329b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2330b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2331e05df3b1SJaegeuk Kim } 23329850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 23337aed0d45SJaegeuk Kim 23347aed0d45SJaegeuk Kim /* destroy nat set cache */ 23357aed0d45SJaegeuk Kim nid = 0; 23367aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 23377aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 23387aed0d45SJaegeuk Kim unsigned idx; 23397aed0d45SJaegeuk Kim 23407aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 23417aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 23427aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 23437aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 23447aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 23457aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 23467aed0d45SJaegeuk Kim } 23477aed0d45SJaegeuk Kim } 23488b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2349e05df3b1SJaegeuk Kim 2350e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2351e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2352e05df3b1SJaegeuk Kim kfree(nm_i); 2353e05df3b1SJaegeuk Kim } 2354e05df3b1SJaegeuk Kim 23556e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2356e05df3b1SJaegeuk Kim { 2357e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2358e8512d2eSGu Zheng sizeof(struct nat_entry)); 2359e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2360aec71382SChao Yu goto fail; 2361e05df3b1SJaegeuk Kim 2362e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2363e8512d2eSGu Zheng sizeof(struct free_nid)); 2364aec71382SChao Yu if (!free_nid_slab) 2365ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2366aec71382SChao Yu 2367aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2368aec71382SChao Yu sizeof(struct nat_entry_set)); 2369aec71382SChao Yu if (!nat_entry_set_slab) 2370ce3e6d25SMarkus Elfring goto destroy_free_nid; 2371e05df3b1SJaegeuk Kim return 0; 2372aec71382SChao Yu 2373ce3e6d25SMarkus Elfring destroy_free_nid: 2374aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2375ce3e6d25SMarkus Elfring destroy_nat_entry: 2376aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2377aec71382SChao Yu fail: 2378aec71382SChao Yu return -ENOMEM; 2379e05df3b1SJaegeuk Kim } 2380e05df3b1SJaegeuk Kim 2381e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2382e05df3b1SJaegeuk Kim { 2383aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2384e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2385e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2386e05df3b1SJaegeuk Kim } 2387