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 2568afcf2dSTomohiro Kusumi #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) { 48b8559dc2SChao Yu mem_size = (nm_i->nid_cnt[FREE_NID_LIST] * 49b8559dc2SChao Yu sizeof(struct free_nid)) >> 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; 57a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 58a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 59a1257023SJaegeuk Kim return false; 60a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 61a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 62e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 63e5e7ea3cSJaegeuk Kim int i; 64e5e7ea3cSJaegeuk Kim 65e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 668f73cbb7SKinglong Mee mem_size += sbi->im[i].ino_num * 678f73cbb7SKinglong Mee sizeof(struct ino_entry); 688f73cbb7SKinglong Mee mem_size >>= PAGE_SHIFT; 69e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 70429511cdSChao Yu } else if (type == EXTENT_CACHE) { 717441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 727441ccefSJaegeuk Kim sizeof(struct extent_tree) + 73429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 7409cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 75429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 761e84371fSJaegeuk Kim } else { 771663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 781663cae4SJaegeuk Kim return true; 796fb03f3aSJaegeuk Kim } 806fb03f3aSJaegeuk Kim return res; 81cdfc41c1SJaegeuk Kim } 82cdfc41c1SJaegeuk Kim 83e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 84e05df3b1SJaegeuk Kim { 85e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 86e05df3b1SJaegeuk Kim unsigned int long flags; 87e05df3b1SJaegeuk Kim 88e05df3b1SJaegeuk Kim if (PageDirty(page)) { 89e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 90e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 91e05df3b1SJaegeuk Kim page_index(page), 92e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 93e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 94e05df3b1SJaegeuk Kim 95e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 964081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 97e05df3b1SJaegeuk Kim } 98e05df3b1SJaegeuk Kim ClearPageUptodate(page); 99e05df3b1SJaegeuk Kim } 100e05df3b1SJaegeuk Kim 101e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 102e05df3b1SJaegeuk Kim { 103e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 104e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 105e05df3b1SJaegeuk Kim } 106e05df3b1SJaegeuk Kim 107e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 108e05df3b1SJaegeuk Kim { 109e05df3b1SJaegeuk Kim struct page *src_page; 110e05df3b1SJaegeuk Kim struct page *dst_page; 111e05df3b1SJaegeuk Kim pgoff_t src_off; 112e05df3b1SJaegeuk Kim pgoff_t dst_off; 113e05df3b1SJaegeuk Kim void *src_addr; 114e05df3b1SJaegeuk Kim void *dst_addr; 115e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 116e05df3b1SJaegeuk Kim 117e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 118e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 119e05df3b1SJaegeuk Kim 120e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 121e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 122e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1239850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 124e05df3b1SJaegeuk Kim 125e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 126e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 12709cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 128e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 129e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 130e05df3b1SJaegeuk Kim 131e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim return dst_page; 134e05df3b1SJaegeuk Kim } 135e05df3b1SJaegeuk Kim 136e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 137e05df3b1SJaegeuk Kim { 138e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 139e05df3b1SJaegeuk Kim } 140e05df3b1SJaegeuk Kim 141e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 142e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 143e05df3b1SJaegeuk Kim { 144e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 145e05df3b1SJaegeuk Kim } 146e05df3b1SJaegeuk Kim 147e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 148e05df3b1SJaegeuk Kim { 149e05df3b1SJaegeuk Kim list_del(&e->list); 150e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 151e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 152e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 153e05df3b1SJaegeuk Kim } 154e05df3b1SJaegeuk Kim 155309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 156309cc2b6SJaegeuk Kim struct nat_entry *ne) 157309cc2b6SJaegeuk Kim { 158309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 159309cc2b6SJaegeuk Kim struct nat_entry_set *head; 160309cc2b6SJaegeuk Kim 161309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 162309cc2b6SJaegeuk Kim return; 1639be32d72SJaegeuk Kim 164309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 165309cc2b6SJaegeuk Kim if (!head) { 16680c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 167309cc2b6SJaegeuk Kim 168309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 169309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 170309cc2b6SJaegeuk Kim head->set = set; 171309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1729be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 173309cc2b6SJaegeuk Kim } 174309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 175309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 176309cc2b6SJaegeuk Kim head->entry_cnt++; 177309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 178309cc2b6SJaegeuk Kim } 179309cc2b6SJaegeuk Kim 180309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 1810b28b71eSKinglong Mee struct nat_entry_set *set, struct nat_entry *ne) 182309cc2b6SJaegeuk Kim { 183309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 184309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 1850b28b71eSKinglong Mee set->entry_cnt--; 186309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 187309cc2b6SJaegeuk Kim } 188309cc2b6SJaegeuk Kim 189309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 190309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 191309cc2b6SJaegeuk Kim { 192309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 193309cc2b6SJaegeuk Kim start, nr); 194309cc2b6SJaegeuk Kim } 195309cc2b6SJaegeuk Kim 1962dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 1972dcf51abSJaegeuk Kim { 1982dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1992dcf51abSJaegeuk Kim struct nat_entry *e; 2002dcf51abSJaegeuk Kim bool need = false; 2012dcf51abSJaegeuk Kim 202b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2032dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2042dcf51abSJaegeuk Kim if (e) { 2052dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2062dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2072dcf51abSJaegeuk Kim need = true; 2082dcf51abSJaegeuk Kim } 209b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2102dcf51abSJaegeuk Kim return need; 2112dcf51abSJaegeuk Kim } 2122dcf51abSJaegeuk Kim 21388bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 214e05df3b1SJaegeuk Kim { 215e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 216e05df3b1SJaegeuk Kim struct nat_entry *e; 21788bd02c9SJaegeuk Kim bool is_cp = true; 218e05df3b1SJaegeuk Kim 219b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 220e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2217ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22288bd02c9SJaegeuk Kim is_cp = false; 223b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 224e05df3b1SJaegeuk Kim return is_cp; 225e05df3b1SJaegeuk Kim } 226e05df3b1SJaegeuk Kim 22788bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 228b6fe5873SJaegeuk Kim { 229b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 230b6fe5873SJaegeuk Kim struct nat_entry *e; 23188bd02c9SJaegeuk Kim bool need_update = true; 232b6fe5873SJaegeuk Kim 233b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23488bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 23588bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23688bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 23788bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 23888bd02c9SJaegeuk Kim need_update = false; 239b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24088bd02c9SJaegeuk Kim return need_update; 241b6fe5873SJaegeuk Kim } 242b6fe5873SJaegeuk Kim 2435c9e4184SChao Yu static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, 2445c9e4184SChao Yu bool no_fail) 245e05df3b1SJaegeuk Kim { 246e05df3b1SJaegeuk Kim struct nat_entry *new; 247e05df3b1SJaegeuk Kim 2485c9e4184SChao Yu if (no_fail) { 24980c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2509be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 2515c9e4184SChao Yu } else { 2525c9e4184SChao Yu new = kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2535c9e4184SChao Yu if (!new) 2545c9e4184SChao Yu return NULL; 2555c9e4184SChao Yu if (radix_tree_insert(&nm_i->nat_root, nid, new)) { 2565c9e4184SChao Yu kmem_cache_free(nat_entry_slab, new); 2575c9e4184SChao Yu return NULL; 2585c9e4184SChao Yu } 2595c9e4184SChao Yu } 2605c9e4184SChao Yu 261e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 262e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 26388bd02c9SJaegeuk Kim nat_reset_flag(new); 264e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 265e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 266e05df3b1SJaegeuk Kim return new; 267e05df3b1SJaegeuk Kim } 268e05df3b1SJaegeuk Kim 2691515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 270e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 271e05df3b1SJaegeuk Kim { 2721515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 273e05df3b1SJaegeuk Kim struct nat_entry *e; 2749be32d72SJaegeuk Kim 275e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 276e05df3b1SJaegeuk Kim if (!e) { 2775c9e4184SChao Yu e = grab_nat_entry(nm_i, nid, false); 2785c9e4184SChao Yu if (e) 27994dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 2801515aef0SChao Yu } else { 2810c0b471eSEric Biggers f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || 2820c0b471eSEric Biggers nat_get_blkaddr(e) != 2830c0b471eSEric Biggers le32_to_cpu(ne->block_addr) || 2841515aef0SChao Yu nat_get_version(e) != ne->version); 285e05df3b1SJaegeuk Kim } 286e05df3b1SJaegeuk Kim } 287e05df3b1SJaegeuk Kim 288e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 289479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 290e05df3b1SJaegeuk Kim { 291e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 292e05df3b1SJaegeuk Kim struct nat_entry *e; 2939be32d72SJaegeuk Kim 294b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 295e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 296e05df3b1SJaegeuk Kim if (!e) { 2975c9e4184SChao Yu e = grab_nat_entry(nm_i, ni->nid, true); 2985c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2999850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 300e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 301e05df3b1SJaegeuk Kim /* 302e05df3b1SJaegeuk Kim * when nid is reallocated, 303e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 304e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 305e05df3b1SJaegeuk Kim */ 3065c27f4eeSChao Yu copy_node_info(&e->ni, ni); 3079850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 308e05df3b1SJaegeuk Kim } 309e05df3b1SJaegeuk Kim 310e05df3b1SJaegeuk Kim /* sanity check */ 3119850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3129850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 313e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3149850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 315e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3169850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 317e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 318e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 319e05df3b1SJaegeuk Kim 320e1c42045Sarter97 /* increment version no as node is removed */ 321e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 322e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 323e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 32426834466SJaegeuk Kim 32526834466SJaegeuk Kim /* in order to reuse the nid */ 32626834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 32726834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 328e05df3b1SJaegeuk Kim } 329e05df3b1SJaegeuk Kim 330e05df3b1SJaegeuk Kim /* change address */ 331e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 33288bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 33388bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 334e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 335479f40c4SJaegeuk Kim 336479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 337d5b692b7SChao Yu if (ni->nid != ni->ino) 338479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 33988bd02c9SJaegeuk Kim if (e) { 34088bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 34188bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 34288bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 34388bd02c9SJaegeuk Kim } 344b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 345e05df3b1SJaegeuk Kim } 346e05df3b1SJaegeuk Kim 3474660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 348e05df3b1SJaegeuk Kim { 349e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3501b38dc8eSJaegeuk Kim int nr = nr_shrink; 351e05df3b1SJaegeuk Kim 352b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 353b873b798SJaegeuk Kim return 0; 354e05df3b1SJaegeuk Kim 355e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 356e05df3b1SJaegeuk Kim struct nat_entry *ne; 357e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 358e05df3b1SJaegeuk Kim struct nat_entry, list); 359e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 360e05df3b1SJaegeuk Kim nr_shrink--; 361e05df3b1SJaegeuk Kim } 362b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3631b38dc8eSJaegeuk Kim return nr - nr_shrink; 364e05df3b1SJaegeuk Kim } 365e05df3b1SJaegeuk Kim 3660a8165d7SJaegeuk Kim /* 367e1c42045Sarter97 * This function always returns success 368e05df3b1SJaegeuk Kim */ 369e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 370e05df3b1SJaegeuk Kim { 371e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 372e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 373b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 374e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 375e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 376e05df3b1SJaegeuk Kim struct page *page = NULL; 377e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 378e05df3b1SJaegeuk Kim struct nat_entry *e; 379e05df3b1SJaegeuk Kim int i; 380e05df3b1SJaegeuk Kim 381e05df3b1SJaegeuk Kim ni->nid = nid; 382e05df3b1SJaegeuk Kim 383e05df3b1SJaegeuk Kim /* Check nat cache */ 384b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 385e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 386e05df3b1SJaegeuk Kim if (e) { 387e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 388e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 389e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 390b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 391e05df3b1SJaegeuk Kim return; 3921515aef0SChao Yu } 393e05df3b1SJaegeuk Kim 3943547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3953547ea96SJaegeuk Kim 396e05df3b1SJaegeuk Kim /* Check current segment summary */ 397b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 398dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 399e05df3b1SJaegeuk Kim if (i >= 0) { 400dfc08a12SChao Yu ne = nat_in_journal(journal, i); 401e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 402e05df3b1SJaegeuk Kim } 403b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 404e05df3b1SJaegeuk Kim if (i >= 0) 405e05df3b1SJaegeuk Kim goto cache; 406e05df3b1SJaegeuk Kim 407e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 408e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 409e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 410e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 411e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 412e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 413e05df3b1SJaegeuk Kim cache: 414b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 415e05df3b1SJaegeuk Kim /* cache nat entry */ 416b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 4171515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 418b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 419e05df3b1SJaegeuk Kim } 420e05df3b1SJaegeuk Kim 42179344efbSJaegeuk Kim /* 42279344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 42379344efbSJaegeuk Kim */ 42479344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 42579344efbSJaegeuk Kim { 42679344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 42779344efbSJaegeuk Kim struct blk_plug plug; 42879344efbSJaegeuk Kim int i, end; 42979344efbSJaegeuk Kim nid_t nid; 43079344efbSJaegeuk Kim 43179344efbSJaegeuk Kim blk_start_plug(&plug); 43279344efbSJaegeuk Kim 43379344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 43479344efbSJaegeuk Kim end = start + n; 43579344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 43679344efbSJaegeuk Kim for (i = start; i < end; i++) { 43779344efbSJaegeuk Kim nid = get_nid(parent, i, false); 43879344efbSJaegeuk Kim ra_node_page(sbi, nid); 43979344efbSJaegeuk Kim } 44079344efbSJaegeuk Kim 44179344efbSJaegeuk Kim blk_finish_plug(&plug); 44279344efbSJaegeuk Kim } 44379344efbSJaegeuk Kim 4443cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4453cf45747SChao Yu { 4463cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4473cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4483cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4493cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4503cf45747SChao Yu int cur_level = dn->cur_level; 4513cf45747SChao Yu int max_level = dn->max_level; 4523cf45747SChao Yu pgoff_t base = 0; 4533cf45747SChao Yu 4543cf45747SChao Yu if (!dn->max_level) 4553cf45747SChao Yu return pgofs + 1; 4563cf45747SChao Yu 4573cf45747SChao Yu while (max_level-- > cur_level) 4583cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4593cf45747SChao Yu 4603cf45747SChao Yu switch (dn->max_level) { 4613cf45747SChao Yu case 3: 4623cf45747SChao Yu base += 2 * indirect_blks; 4633cf45747SChao Yu case 2: 4643cf45747SChao Yu base += 2 * direct_blks; 4653cf45747SChao Yu case 1: 4663cf45747SChao Yu base += direct_index; 4673cf45747SChao Yu break; 4683cf45747SChao Yu default: 4693cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 4703cf45747SChao Yu } 4713cf45747SChao Yu 4723cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 4733cf45747SChao Yu } 4743cf45747SChao Yu 4750a8165d7SJaegeuk Kim /* 476e05df3b1SJaegeuk Kim * The maximum depth is four. 477e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 478e05df3b1SJaegeuk Kim */ 47981ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 480de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 481e05df3b1SJaegeuk Kim { 48281ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 483e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 484e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 485e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 486e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 487e05df3b1SJaegeuk Kim int n = 0; 488e05df3b1SJaegeuk Kim int level = 0; 489e05df3b1SJaegeuk Kim 490e05df3b1SJaegeuk Kim noffset[0] = 0; 491e05df3b1SJaegeuk Kim 492e05df3b1SJaegeuk Kim if (block < direct_index) { 49325c0a6e5SNamjae Jeon offset[n] = block; 494e05df3b1SJaegeuk Kim goto got; 495e05df3b1SJaegeuk Kim } 496e05df3b1SJaegeuk Kim block -= direct_index; 497e05df3b1SJaegeuk Kim if (block < direct_blks) { 498e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 499e05df3b1SJaegeuk Kim noffset[n] = 1; 50025c0a6e5SNamjae Jeon offset[n] = block; 501e05df3b1SJaegeuk Kim level = 1; 502e05df3b1SJaegeuk Kim goto got; 503e05df3b1SJaegeuk Kim } 504e05df3b1SJaegeuk Kim block -= direct_blks; 505e05df3b1SJaegeuk Kim if (block < direct_blks) { 506e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 507e05df3b1SJaegeuk Kim noffset[n] = 2; 50825c0a6e5SNamjae Jeon offset[n] = block; 509e05df3b1SJaegeuk Kim level = 1; 510e05df3b1SJaegeuk Kim goto got; 511e05df3b1SJaegeuk Kim } 512e05df3b1SJaegeuk Kim block -= direct_blks; 513e05df3b1SJaegeuk Kim if (block < indirect_blks) { 514e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 515e05df3b1SJaegeuk Kim noffset[n] = 3; 516e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 517e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 51825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 519e05df3b1SJaegeuk Kim level = 2; 520e05df3b1SJaegeuk Kim goto got; 521e05df3b1SJaegeuk Kim } 522e05df3b1SJaegeuk Kim block -= indirect_blks; 523e05df3b1SJaegeuk Kim if (block < indirect_blks) { 524e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 525e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 526e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 527e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 52825c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 529e05df3b1SJaegeuk Kim level = 2; 530e05df3b1SJaegeuk Kim goto got; 531e05df3b1SJaegeuk Kim } 532e05df3b1SJaegeuk Kim block -= indirect_blks; 533e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 534e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 535e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 536e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 537e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 538e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 539e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 540e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 541e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 542e05df3b1SJaegeuk Kim offset[n - 1]; 54325c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 544e05df3b1SJaegeuk Kim level = 3; 545e05df3b1SJaegeuk Kim goto got; 546e05df3b1SJaegeuk Kim } else { 547e05df3b1SJaegeuk Kim BUG(); 548e05df3b1SJaegeuk Kim } 549e05df3b1SJaegeuk Kim got: 550e05df3b1SJaegeuk Kim return level; 551e05df3b1SJaegeuk Kim } 552e05df3b1SJaegeuk Kim 553e05df3b1SJaegeuk Kim /* 554e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5554f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5564f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 55739936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 558e05df3b1SJaegeuk Kim */ 559266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 560e05df3b1SJaegeuk Kim { 5614081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 562e05df3b1SJaegeuk Kim struct page *npage[4]; 563f1a3b98eSJaegeuk Kim struct page *parent = NULL; 564e05df3b1SJaegeuk Kim int offset[4]; 565e05df3b1SJaegeuk Kim unsigned int noffset[4]; 566e05df3b1SJaegeuk Kim nid_t nids[4]; 5673cf45747SChao Yu int level, i = 0; 568e05df3b1SJaegeuk Kim int err = 0; 569e05df3b1SJaegeuk Kim 57081ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 571e05df3b1SJaegeuk Kim 572e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5731646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5741646cfacSJaegeuk Kim 5751646cfacSJaegeuk Kim if (!npage[0]) { 576e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 577e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 578e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5791646cfacSJaegeuk Kim } 580f1a3b98eSJaegeuk Kim 581f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 582f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 58376629165SJaegeuk Kim err = -ENOENT; 584f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 585f1a3b98eSJaegeuk Kim goto release_out; 586f1a3b98eSJaegeuk Kim } 587f1a3b98eSJaegeuk Kim 588e05df3b1SJaegeuk Kim parent = npage[0]; 58952c2db3fSChangman Lee if (level != 0) 590e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 591e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 592e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 593e05df3b1SJaegeuk Kim 594e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 595e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 596e05df3b1SJaegeuk Kim bool done = false; 597e05df3b1SJaegeuk Kim 598266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 599e05df3b1SJaegeuk Kim /* alloc new node */ 600e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 601e05df3b1SJaegeuk Kim err = -ENOSPC; 602e05df3b1SJaegeuk Kim goto release_pages; 603e05df3b1SJaegeuk Kim } 604e05df3b1SJaegeuk Kim 605e05df3b1SJaegeuk Kim dn->nid = nids[i]; 6068ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 607e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 608e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 609e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 610e05df3b1SJaegeuk Kim goto release_pages; 611e05df3b1SJaegeuk Kim } 612e05df3b1SJaegeuk Kim 613e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 614e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 615e05df3b1SJaegeuk Kim done = true; 616266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 617e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 618e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 619e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 620e05df3b1SJaegeuk Kim goto release_pages; 621e05df3b1SJaegeuk Kim } 622e05df3b1SJaegeuk Kim done = true; 623e05df3b1SJaegeuk Kim } 624e05df3b1SJaegeuk Kim if (i == 1) { 625e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 626e05df3b1SJaegeuk Kim unlock_page(parent); 627e05df3b1SJaegeuk Kim } else { 628e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 629e05df3b1SJaegeuk Kim } 630e05df3b1SJaegeuk Kim 631e05df3b1SJaegeuk Kim if (!done) { 632e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 633e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 634e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 635e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 636e05df3b1SJaegeuk Kim goto release_out; 637e05df3b1SJaegeuk Kim } 638e05df3b1SJaegeuk Kim } 639e05df3b1SJaegeuk Kim if (i < level) { 640e05df3b1SJaegeuk Kim parent = npage[i]; 641e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 642e05df3b1SJaegeuk Kim } 643e05df3b1SJaegeuk Kim } 644e05df3b1SJaegeuk Kim dn->nid = nids[level]; 645e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 646e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 647e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 648e05df3b1SJaegeuk Kim return 0; 649e05df3b1SJaegeuk Kim 650e05df3b1SJaegeuk Kim release_pages: 651e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 652e05df3b1SJaegeuk Kim if (i > 1) 653e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 654e05df3b1SJaegeuk Kim release_out: 655e05df3b1SJaegeuk Kim dn->inode_page = NULL; 656e05df3b1SJaegeuk Kim dn->node_page = NULL; 6573cf45747SChao Yu if (err == -ENOENT) { 6583cf45747SChao Yu dn->cur_level = i; 6593cf45747SChao Yu dn->max_level = level; 6600a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 6613cf45747SChao Yu } 662e05df3b1SJaegeuk Kim return err; 663e05df3b1SJaegeuk Kim } 664e05df3b1SJaegeuk Kim 665e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 666e05df3b1SJaegeuk Kim { 6674081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 668e05df3b1SJaegeuk Kim struct node_info ni; 669e05df3b1SJaegeuk Kim 670e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 67171e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 6729850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 67371e9fec5SJaegeuk Kim goto invalidate; 67471e9fec5SJaegeuk Kim } 6759850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 676e05df3b1SJaegeuk Kim 677e05df3b1SJaegeuk Kim /* Deallocate node address */ 67871e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 679ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 680479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 681e05df3b1SJaegeuk Kim 682e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 683e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 684e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 6850f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 686e05df3b1SJaegeuk Kim } 68771e9fec5SJaegeuk Kim invalidate: 688e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 689caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 690e05df3b1SJaegeuk Kim 691e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 692bf39c00aSJaegeuk Kim 693bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 694bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 695bf39c00aSJaegeuk Kim 696e05df3b1SJaegeuk Kim dn->node_page = NULL; 69751dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 698e05df3b1SJaegeuk Kim } 699e05df3b1SJaegeuk Kim 700e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 701e05df3b1SJaegeuk Kim { 702e05df3b1SJaegeuk Kim struct page *page; 703e05df3b1SJaegeuk Kim 704e05df3b1SJaegeuk Kim if (dn->nid == 0) 705e05df3b1SJaegeuk Kim return 1; 706e05df3b1SJaegeuk Kim 707e05df3b1SJaegeuk Kim /* get direct node */ 7084081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 709e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 710e05df3b1SJaegeuk Kim return 1; 711e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 712e05df3b1SJaegeuk Kim return PTR_ERR(page); 713e05df3b1SJaegeuk Kim 714e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 715e05df3b1SJaegeuk Kim dn->node_page = page; 716e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 717e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 718e05df3b1SJaegeuk Kim truncate_node(dn); 719e05df3b1SJaegeuk Kim return 1; 720e05df3b1SJaegeuk Kim } 721e05df3b1SJaegeuk Kim 722e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 723e05df3b1SJaegeuk Kim int ofs, int depth) 724e05df3b1SJaegeuk Kim { 725e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 726e05df3b1SJaegeuk Kim struct page *page; 727e05df3b1SJaegeuk Kim struct f2fs_node *rn; 728e05df3b1SJaegeuk Kim nid_t child_nid; 729e05df3b1SJaegeuk Kim unsigned int child_nofs; 730e05df3b1SJaegeuk Kim int freed = 0; 731e05df3b1SJaegeuk Kim int i, ret; 732e05df3b1SJaegeuk Kim 733e05df3b1SJaegeuk Kim if (dn->nid == 0) 734e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 735e05df3b1SJaegeuk Kim 73651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 73751dd6249SNamjae Jeon 7384081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 73951dd6249SNamjae Jeon if (IS_ERR(page)) { 74051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 741e05df3b1SJaegeuk Kim return PTR_ERR(page); 74251dd6249SNamjae Jeon } 743e05df3b1SJaegeuk Kim 74479344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 74579344efbSJaegeuk Kim 74645590710SGu Zheng rn = F2FS_NODE(page); 747e05df3b1SJaegeuk Kim if (depth < 3) { 748e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 749e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 750e05df3b1SJaegeuk Kim if (child_nid == 0) 751e05df3b1SJaegeuk Kim continue; 752e05df3b1SJaegeuk Kim rdn.nid = child_nid; 753e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 754e05df3b1SJaegeuk Kim if (ret < 0) 755e05df3b1SJaegeuk Kim goto out_err; 75612719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 75793bae099SJaegeuk Kim dn->node_changed = true; 758e05df3b1SJaegeuk Kim } 759e05df3b1SJaegeuk Kim } else { 760e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 761e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 762e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 763e05df3b1SJaegeuk Kim if (child_nid == 0) { 764e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 765e05df3b1SJaegeuk Kim continue; 766e05df3b1SJaegeuk Kim } 767e05df3b1SJaegeuk Kim rdn.nid = child_nid; 768e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 769e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 77012719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 77193bae099SJaegeuk Kim dn->node_changed = true; 772e05df3b1SJaegeuk Kim child_nofs += ret; 773e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 774e05df3b1SJaegeuk Kim goto out_err; 775e05df3b1SJaegeuk Kim } 776e05df3b1SJaegeuk Kim } 777e05df3b1SJaegeuk Kim freed = child_nofs; 778e05df3b1SJaegeuk Kim } 779e05df3b1SJaegeuk Kim 780e05df3b1SJaegeuk Kim if (!ofs) { 781e05df3b1SJaegeuk Kim /* remove current indirect node */ 782e05df3b1SJaegeuk Kim dn->node_page = page; 783e05df3b1SJaegeuk Kim truncate_node(dn); 784e05df3b1SJaegeuk Kim freed++; 785e05df3b1SJaegeuk Kim } else { 786e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 787e05df3b1SJaegeuk Kim } 78851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 789e05df3b1SJaegeuk Kim return freed; 790e05df3b1SJaegeuk Kim 791e05df3b1SJaegeuk Kim out_err: 792e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 79351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 794e05df3b1SJaegeuk Kim return ret; 795e05df3b1SJaegeuk Kim } 796e05df3b1SJaegeuk Kim 797e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 798e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 799e05df3b1SJaegeuk Kim { 800e05df3b1SJaegeuk Kim struct page *pages[2]; 801e05df3b1SJaegeuk Kim nid_t nid[3]; 802e05df3b1SJaegeuk Kim nid_t child_nid; 803e05df3b1SJaegeuk Kim int err = 0; 804e05df3b1SJaegeuk Kim int i; 805e05df3b1SJaegeuk Kim int idx = depth - 2; 806e05df3b1SJaegeuk Kim 807e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 808e05df3b1SJaegeuk Kim if (!nid[0]) 809e05df3b1SJaegeuk Kim return 0; 810e05df3b1SJaegeuk Kim 811e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 812a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 813e1c42045Sarter97 /* reference count'll be increased */ 8144081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 815e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 816e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 817a225dca3Sshifei10.ge idx = i - 1; 818e05df3b1SJaegeuk Kim goto fail; 819e05df3b1SJaegeuk Kim } 820e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 821e05df3b1SJaegeuk Kim } 822e05df3b1SJaegeuk Kim 82379344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 82479344efbSJaegeuk Kim 825e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 826a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 827e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 828e05df3b1SJaegeuk Kim if (!child_nid) 829e05df3b1SJaegeuk Kim continue; 830e05df3b1SJaegeuk Kim dn->nid = child_nid; 831e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 832e05df3b1SJaegeuk Kim if (err < 0) 833e05df3b1SJaegeuk Kim goto fail; 83412719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 83593bae099SJaegeuk Kim dn->node_changed = true; 836e05df3b1SJaegeuk Kim } 837e05df3b1SJaegeuk Kim 838a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 839e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 840e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 841e05df3b1SJaegeuk Kim truncate_node(dn); 842e05df3b1SJaegeuk Kim } else { 843e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 844e05df3b1SJaegeuk Kim } 845e05df3b1SJaegeuk Kim offset[idx]++; 846a225dca3Sshifei10.ge offset[idx + 1] = 0; 847a225dca3Sshifei10.ge idx--; 848e05df3b1SJaegeuk Kim fail: 849a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 850e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 85151dd6249SNamjae Jeon 85251dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 85351dd6249SNamjae Jeon 854e05df3b1SJaegeuk Kim return err; 855e05df3b1SJaegeuk Kim } 856e05df3b1SJaegeuk Kim 8570a8165d7SJaegeuk Kim /* 858e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 859e05df3b1SJaegeuk Kim */ 860e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 861e05df3b1SJaegeuk Kim { 8624081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 863e05df3b1SJaegeuk Kim int err = 0, cont = 1; 864e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8657dd690c8SJaegeuk Kim unsigned int nofs = 0; 86658bfaf44SJaegeuk Kim struct f2fs_inode *ri; 867e05df3b1SJaegeuk Kim struct dnode_of_data dn; 868e05df3b1SJaegeuk Kim struct page *page; 869e05df3b1SJaegeuk Kim 87051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 87151dd6249SNamjae Jeon 87281ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 873ff373558SJaegeuk Kim 874e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 87551dd6249SNamjae Jeon if (IS_ERR(page)) { 87651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 877e05df3b1SJaegeuk Kim return PTR_ERR(page); 87851dd6249SNamjae Jeon } 879e05df3b1SJaegeuk Kim 880e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 881e05df3b1SJaegeuk Kim unlock_page(page); 882e05df3b1SJaegeuk Kim 88358bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 884e05df3b1SJaegeuk Kim switch (level) { 885e05df3b1SJaegeuk Kim case 0: 886e05df3b1SJaegeuk Kim case 1: 887e05df3b1SJaegeuk Kim nofs = noffset[1]; 888e05df3b1SJaegeuk Kim break; 889e05df3b1SJaegeuk Kim case 2: 890e05df3b1SJaegeuk Kim nofs = noffset[1]; 891e05df3b1SJaegeuk Kim if (!offset[level - 1]) 892e05df3b1SJaegeuk Kim goto skip_partial; 89358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 894e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 895e05df3b1SJaegeuk Kim goto fail; 896e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 897e05df3b1SJaegeuk Kim break; 898e05df3b1SJaegeuk Kim case 3: 899e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 900e05df3b1SJaegeuk Kim if (!offset[level - 1]) 901e05df3b1SJaegeuk Kim goto skip_partial; 90258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 903e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 904e05df3b1SJaegeuk Kim goto fail; 905e05df3b1SJaegeuk Kim break; 906e05df3b1SJaegeuk Kim default: 907e05df3b1SJaegeuk Kim BUG(); 908e05df3b1SJaegeuk Kim } 909e05df3b1SJaegeuk Kim 910e05df3b1SJaegeuk Kim skip_partial: 911e05df3b1SJaegeuk Kim while (cont) { 91258bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 913e05df3b1SJaegeuk Kim switch (offset[0]) { 914e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 915e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 916e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 917e05df3b1SJaegeuk Kim break; 918e05df3b1SJaegeuk Kim 919e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 920e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 921e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 922e05df3b1SJaegeuk Kim break; 923e05df3b1SJaegeuk Kim 924e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 925e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 926e05df3b1SJaegeuk Kim cont = 0; 927e05df3b1SJaegeuk Kim break; 928e05df3b1SJaegeuk Kim 929e05df3b1SJaegeuk Kim default: 930e05df3b1SJaegeuk Kim BUG(); 931e05df3b1SJaegeuk Kim } 932e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 933e05df3b1SJaegeuk Kim goto fail; 934e05df3b1SJaegeuk Kim if (offset[1] == 0 && 93558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 936e05df3b1SJaegeuk Kim lock_page(page); 937ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 938fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 93958bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 940e05df3b1SJaegeuk Kim set_page_dirty(page); 941e05df3b1SJaegeuk Kim unlock_page(page); 942e05df3b1SJaegeuk Kim } 943e05df3b1SJaegeuk Kim offset[1] = 0; 944e05df3b1SJaegeuk Kim offset[0]++; 945e05df3b1SJaegeuk Kim nofs += err; 946e05df3b1SJaegeuk Kim } 947e05df3b1SJaegeuk Kim fail: 948e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 94951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 950e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 951e05df3b1SJaegeuk Kim } 952e05df3b1SJaegeuk Kim 9534f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 9544f16fb0fSJaegeuk Kim { 9554081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9564f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9574f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9584f16fb0fSJaegeuk Kim struct page *npage; 9594f16fb0fSJaegeuk Kim 9604f16fb0fSJaegeuk Kim if (!nid) 9614f16fb0fSJaegeuk Kim return 0; 9624f16fb0fSJaegeuk Kim 9634f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9644f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9654f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9664f16fb0fSJaegeuk Kim 967205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 96865985d93SJaegeuk Kim 9694f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 9704f16fb0fSJaegeuk Kim 9714f16fb0fSJaegeuk Kim if (page) 97201d2d1aaSChao Yu dn.inode_page_locked = true; 9734f16fb0fSJaegeuk Kim truncate_node(&dn); 9744f16fb0fSJaegeuk Kim return 0; 9754f16fb0fSJaegeuk Kim } 9764f16fb0fSJaegeuk Kim 97739936837SJaegeuk Kim /* 9784f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9794f4124d0SChao Yu * f2fs_unlock_op(). 98039936837SJaegeuk Kim */ 98113ec7297SChao Yu int remove_inode_page(struct inode *inode) 982e05df3b1SJaegeuk Kim { 983e05df3b1SJaegeuk Kim struct dnode_of_data dn; 98413ec7297SChao Yu int err; 985e05df3b1SJaegeuk Kim 986c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 98713ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 98813ec7297SChao Yu if (err) 98913ec7297SChao Yu return err; 990e05df3b1SJaegeuk Kim 99113ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 99213ec7297SChao Yu if (err) { 993c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 99413ec7297SChao Yu return err; 995e05df3b1SJaegeuk Kim } 996c2e69583SJaegeuk Kim 997c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 998c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 999c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 1000c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 1001c2e69583SJaegeuk Kim 1002e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 10039850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 10049850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 1005c2e69583SJaegeuk Kim 1006c2e69583SJaegeuk Kim /* will put inode & node pages */ 1007e05df3b1SJaegeuk Kim truncate_node(&dn); 100813ec7297SChao Yu return 0; 1009e05df3b1SJaegeuk Kim } 1010e05df3b1SJaegeuk Kim 1011a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1012e05df3b1SJaegeuk Kim { 1013e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1014e05df3b1SJaegeuk Kim 1015e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1016e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 101744a83ff6SJaegeuk Kim 101844a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10198ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 1020e05df3b1SJaegeuk Kim } 1021e05df3b1SJaegeuk Kim 10228ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 10238ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 1024e05df3b1SJaegeuk Kim { 10254081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 102625cc5d3bSJaegeuk Kim struct node_info new_ni; 1027e05df3b1SJaegeuk Kim struct page *page; 1028e05df3b1SJaegeuk Kim int err; 1029e05df3b1SJaegeuk Kim 103091942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1031e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1032e05df3b1SJaegeuk Kim 1033300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1034e05df3b1SJaegeuk Kim if (!page) 1035e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1036e05df3b1SJaegeuk Kim 10376bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 10389c02740cSJaegeuk Kim err = -ENOSPC; 10399c02740cSJaegeuk Kim goto fail; 10409c02740cSJaegeuk Kim } 104125cc5d3bSJaegeuk Kim #ifdef CONFIG_F2FS_CHECK_FS 104225cc5d3bSJaegeuk Kim get_node_info(sbi, dn->nid, &new_ni); 104325cc5d3bSJaegeuk Kim f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); 104425cc5d3bSJaegeuk Kim #endif 104525cc5d3bSJaegeuk Kim new_ni.nid = dn->nid; 1046e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 104725cc5d3bSJaegeuk Kim new_ni.blk_addr = NULL_ADDR; 104825cc5d3bSJaegeuk Kim new_ni.flag = 0; 104925cc5d3bSJaegeuk Kim new_ni.version = 0; 1050479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10519c02740cSJaegeuk Kim 1052fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10539c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1054398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 1055237c0790SJaegeuk Kim if (!PageUptodate(page)) 10569c02740cSJaegeuk Kim SetPageUptodate(page); 105712719ae1SJaegeuk Kim if (set_page_dirty(page)) 105812719ae1SJaegeuk Kim dn->node_changed = true; 1059e05df3b1SJaegeuk Kim 10604bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1061205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1062479bd73aSJaegeuk Kim 1063e05df3b1SJaegeuk Kim if (ofs == 0) 1064e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1065e05df3b1SJaegeuk Kim return page; 1066e05df3b1SJaegeuk Kim 1067e05df3b1SJaegeuk Kim fail: 106871e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1069e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1070e05df3b1SJaegeuk Kim return ERR_PTR(err); 1071e05df3b1SJaegeuk Kim } 1072e05df3b1SJaegeuk Kim 107356ae674cSJaegeuk Kim /* 107456ae674cSJaegeuk Kim * Caller should do after getting the following values. 107556ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 107686531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 107756ae674cSJaegeuk Kim */ 107804d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1079e05df3b1SJaegeuk Kim { 10804081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1081e05df3b1SJaegeuk Kim struct node_info ni; 1082cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 108305ca3632SJaegeuk Kim .sbi = sbi, 1084cf04e8ebSJaegeuk Kim .type = NODE, 108504d328deSMike Christie .op = REQ_OP_READ, 108604d328deSMike Christie .op_flags = op_flags, 108705ca3632SJaegeuk Kim .page = page, 10884375a336SJaegeuk Kim .encrypted_page = NULL, 1089cf04e8ebSJaegeuk Kim }; 1090e05df3b1SJaegeuk Kim 10913bdad3c7SJaegeuk Kim if (PageUptodate(page)) 10923bdad3c7SJaegeuk Kim return LOCKED_PAGE; 10933bdad3c7SJaegeuk Kim 1094e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1095e05df3b1SJaegeuk Kim 10966bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10972bca1e23SJaegeuk Kim ClearPageUptodate(page); 1098e05df3b1SJaegeuk Kim return -ENOENT; 1099393ff91fSJaegeuk Kim } 1100393ff91fSJaegeuk Kim 11017a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 110205ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1103e05df3b1SJaegeuk Kim } 1104e05df3b1SJaegeuk Kim 11050a8165d7SJaegeuk Kim /* 1106e05df3b1SJaegeuk Kim * Readahead a node page 1107e05df3b1SJaegeuk Kim */ 1108e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1109e05df3b1SJaegeuk Kim { 1110e05df3b1SJaegeuk Kim struct page *apage; 111156ae674cSJaegeuk Kim int err; 1112e05df3b1SJaegeuk Kim 1113e8458725SChao Yu if (!nid) 1114e8458725SChao Yu return; 1115e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1116e8458725SChao Yu 1117999270deSFan Li rcu_read_lock(); 1118999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1119999270deSFan Li rcu_read_unlock(); 1120999270deSFan Li if (apage) 1121393ff91fSJaegeuk Kim return; 1122e05df3b1SJaegeuk Kim 1123300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1124e05df3b1SJaegeuk Kim if (!apage) 1125e05df3b1SJaegeuk Kim return; 1126e05df3b1SJaegeuk Kim 112770246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 112886531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1129e05df3b1SJaegeuk Kim } 1130e05df3b1SJaegeuk Kim 113117a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11320e022ea8SChao Yu struct page *parent, int start) 1133e05df3b1SJaegeuk Kim { 113456ae674cSJaegeuk Kim struct page *page; 113556ae674cSJaegeuk Kim int err; 11364aa69d56SJaegeuk Kim 11374aa69d56SJaegeuk Kim if (!nid) 11384aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11394aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1140afcb7ca0SJaegeuk Kim repeat: 1141300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1142e05df3b1SJaegeuk Kim if (!page) 1143e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1144e05df3b1SJaegeuk Kim 114570fd7614SChristoph Hellwig err = read_node_page(page, 0); 114686531d6bSJaegeuk Kim if (err < 0) { 114786531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1148e05df3b1SJaegeuk Kim return ERR_PTR(err); 1149e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 1150e1c51b9fSChao Yu goto page_hit; 115186531d6bSJaegeuk Kim } 1152aaf96075SJaegeuk Kim 11530e022ea8SChao Yu if (parent) 115479344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11550e022ea8SChao Yu 1156e1c51b9fSChao Yu lock_page(page); 1157e1c51b9fSChao Yu 11584ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1159afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1160afcb7ca0SJaegeuk Kim goto repeat; 1161afcb7ca0SJaegeuk Kim } 11621563ac75SChao Yu 11631563ac75SChao Yu if (unlikely(!PageUptodate(page))) 11641563ac75SChao Yu goto out_err; 1165e1c51b9fSChao Yu page_hit: 11660c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 11670c9df7fbSYunlong Song f2fs_bug_on(sbi, 1); 11680c9df7fbSYunlong Song ClearPageUptodate(page); 11690c9df7fbSYunlong Song out_err: 11700c9df7fbSYunlong Song f2fs_put_page(page, 1); 11710c9df7fbSYunlong Song return ERR_PTR(-EIO); 11720c9df7fbSYunlong Song } 1173e05df3b1SJaegeuk Kim return page; 1174e05df3b1SJaegeuk Kim } 1175e05df3b1SJaegeuk Kim 11760e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11770e022ea8SChao Yu { 11780e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11790e022ea8SChao Yu } 11800e022ea8SChao Yu 1181e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1182e05df3b1SJaegeuk Kim { 11834081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11840e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1185e05df3b1SJaegeuk Kim 11860e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1187e05df3b1SJaegeuk Kim } 1188e05df3b1SJaegeuk Kim 11892049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 11902049d4fcSJaegeuk Kim { 11912049d4fcSJaegeuk Kim struct inode *inode; 11922049d4fcSJaegeuk Kim struct page *page; 11930f3311a8SChao Yu int ret; 11942049d4fcSJaegeuk Kim 11952049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 11962049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 11972049d4fcSJaegeuk Kim if (!inode) 11982049d4fcSJaegeuk Kim return; 11992049d4fcSJaegeuk Kim 12004a6de50dSJaegeuk Kim page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); 12012049d4fcSJaegeuk Kim if (!page) 12022049d4fcSJaegeuk Kim goto iput_out; 12032049d4fcSJaegeuk Kim 12042049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12052049d4fcSJaegeuk Kim goto page_out; 12062049d4fcSJaegeuk Kim 12072049d4fcSJaegeuk Kim if (!PageDirty(page)) 12082049d4fcSJaegeuk Kim goto page_out; 12092049d4fcSJaegeuk Kim 12102049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12112049d4fcSJaegeuk Kim goto page_out; 12122049d4fcSJaegeuk Kim 12130f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12142049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 1215933439c8SChao Yu remove_dirty_inode(inode); 12160f3311a8SChao Yu if (ret) 12172049d4fcSJaegeuk Kim set_page_dirty(page); 12182049d4fcSJaegeuk Kim page_out: 12194a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12202049d4fcSJaegeuk Kim iput_out: 12212049d4fcSJaegeuk Kim iput(inode); 12222049d4fcSJaegeuk Kim } 12232049d4fcSJaegeuk Kim 1224da011cc0SChao Yu void move_node_page(struct page *node_page, int gc_type) 1225da011cc0SChao Yu { 1226da011cc0SChao Yu if (gc_type == FG_GC) { 1227da011cc0SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(node_page); 1228da011cc0SChao Yu struct writeback_control wbc = { 1229da011cc0SChao Yu .sync_mode = WB_SYNC_ALL, 1230da011cc0SChao Yu .nr_to_write = 1, 1231da011cc0SChao Yu .for_reclaim = 0, 1232da011cc0SChao Yu }; 1233da011cc0SChao Yu 1234da011cc0SChao Yu set_page_dirty(node_page); 1235da011cc0SChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true); 1236da011cc0SChao Yu 1237da011cc0SChao Yu f2fs_bug_on(sbi, PageWriteback(node_page)); 1238da011cc0SChao Yu if (!clear_page_dirty_for_io(node_page)) 1239da011cc0SChao Yu goto out_page; 1240da011cc0SChao Yu 1241da011cc0SChao Yu if (NODE_MAPPING(sbi)->a_ops->writepage(node_page, &wbc)) 1242da011cc0SChao Yu unlock_page(node_page); 1243da011cc0SChao Yu goto release_page; 1244da011cc0SChao Yu } else { 1245da011cc0SChao Yu /* set page dirty and write it */ 1246da011cc0SChao Yu if (!PageWriteback(node_page)) 1247da011cc0SChao Yu set_page_dirty(node_page); 1248da011cc0SChao Yu } 1249da011cc0SChao Yu out_page: 1250da011cc0SChao Yu unlock_page(node_page); 1251da011cc0SChao Yu release_page: 1252da011cc0SChao Yu f2fs_put_page(node_page, 0); 1253da011cc0SChao Yu } 1254da011cc0SChao Yu 1255608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1256e05df3b1SJaegeuk Kim { 1257e05df3b1SJaegeuk Kim pgoff_t index, end; 1258e05df3b1SJaegeuk Kim struct pagevec pvec; 1259608514deSJaegeuk Kim struct page *last_page = NULL; 126052681375SJaegeuk Kim 126152681375SJaegeuk Kim pagevec_init(&pvec, 0); 126252681375SJaegeuk Kim index = 0; 126352681375SJaegeuk Kim end = ULONG_MAX; 126452681375SJaegeuk Kim 126552681375SJaegeuk Kim while (index <= end) { 126652681375SJaegeuk Kim int i, nr_pages; 126752681375SJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 126852681375SJaegeuk Kim PAGECACHE_TAG_DIRTY, 126952681375SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 127052681375SJaegeuk Kim if (nr_pages == 0) 127152681375SJaegeuk Kim break; 127252681375SJaegeuk Kim 127352681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 127452681375SJaegeuk Kim struct page *page = pvec.pages[i]; 127552681375SJaegeuk Kim 127652681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1277608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 127852681375SJaegeuk Kim pagevec_release(&pvec); 1279608514deSJaegeuk Kim return ERR_PTR(-EIO); 128052681375SJaegeuk Kim } 128152681375SJaegeuk Kim 128252681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 128352681375SJaegeuk Kim continue; 128452681375SJaegeuk Kim if (ino_of_node(page) != ino) 128552681375SJaegeuk Kim continue; 128652681375SJaegeuk Kim 128752681375SJaegeuk Kim lock_page(page); 128852681375SJaegeuk Kim 128952681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 129052681375SJaegeuk Kim continue_unlock: 129152681375SJaegeuk Kim unlock_page(page); 129252681375SJaegeuk Kim continue; 129352681375SJaegeuk Kim } 129452681375SJaegeuk Kim if (ino_of_node(page) != ino) 129552681375SJaegeuk Kim goto continue_unlock; 129652681375SJaegeuk Kim 129752681375SJaegeuk Kim if (!PageDirty(page)) { 129852681375SJaegeuk Kim /* someone wrote it for us */ 129952681375SJaegeuk Kim goto continue_unlock; 130052681375SJaegeuk Kim } 130152681375SJaegeuk Kim 1302608514deSJaegeuk Kim if (last_page) 1303608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1304608514deSJaegeuk Kim 1305608514deSJaegeuk Kim get_page(page); 1306608514deSJaegeuk Kim last_page = page; 1307608514deSJaegeuk Kim unlock_page(page); 1308608514deSJaegeuk Kim } 1309608514deSJaegeuk Kim pagevec_release(&pvec); 1310608514deSJaegeuk Kim cond_resched(); 1311608514deSJaegeuk Kim } 1312608514deSJaegeuk Kim return last_page; 1313608514deSJaegeuk Kim } 1314608514deSJaegeuk Kim 1315d68f735bSJaegeuk Kim static int __write_node_page(struct page *page, bool atomic, bool *submitted, 1316faa24895SJaegeuk Kim struct writeback_control *wbc) 1317faa24895SJaegeuk Kim { 1318faa24895SJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1319faa24895SJaegeuk Kim nid_t nid; 1320faa24895SJaegeuk Kim struct node_info ni; 1321faa24895SJaegeuk Kim struct f2fs_io_info fio = { 1322faa24895SJaegeuk Kim .sbi = sbi, 1323faa24895SJaegeuk Kim .type = NODE, 1324faa24895SJaegeuk Kim .op = REQ_OP_WRITE, 1325faa24895SJaegeuk Kim .op_flags = wbc_to_write_flags(wbc), 1326faa24895SJaegeuk Kim .page = page, 1327faa24895SJaegeuk Kim .encrypted_page = NULL, 1328d68f735bSJaegeuk Kim .submitted = false, 1329faa24895SJaegeuk Kim }; 1330faa24895SJaegeuk Kim 1331faa24895SJaegeuk Kim trace_f2fs_writepage(page, NODE); 1332faa24895SJaegeuk Kim 1333faa24895SJaegeuk Kim if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1334faa24895SJaegeuk Kim goto redirty_out; 1335faa24895SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1336faa24895SJaegeuk Kim goto redirty_out; 1337faa24895SJaegeuk Kim 1338faa24895SJaegeuk Kim /* get old block addr of this node page */ 1339faa24895SJaegeuk Kim nid = nid_of_node(page); 1340faa24895SJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1341faa24895SJaegeuk Kim 1342faa24895SJaegeuk Kim if (wbc->for_reclaim) { 1343faa24895SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 1344faa24895SJaegeuk Kim goto redirty_out; 1345faa24895SJaegeuk Kim } else { 1346faa24895SJaegeuk Kim down_read(&sbi->node_write); 1347faa24895SJaegeuk Kim } 1348faa24895SJaegeuk Kim 1349faa24895SJaegeuk Kim get_node_info(sbi, nid, &ni); 1350faa24895SJaegeuk Kim 1351faa24895SJaegeuk Kim /* This page is already truncated */ 1352faa24895SJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 1353faa24895SJaegeuk Kim ClearPageUptodate(page); 1354faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1355faa24895SJaegeuk Kim up_read(&sbi->node_write); 1356faa24895SJaegeuk Kim unlock_page(page); 1357faa24895SJaegeuk Kim return 0; 1358faa24895SJaegeuk Kim } 1359faa24895SJaegeuk Kim 1360e7c75ab0SJaegeuk Kim if (atomic && !test_opt(sbi, NOBARRIER)) 1361e7c75ab0SJaegeuk Kim fio.op_flags |= REQ_PREFLUSH | REQ_FUA; 1362e7c75ab0SJaegeuk Kim 1363faa24895SJaegeuk Kim set_page_writeback(page); 1364faa24895SJaegeuk Kim fio.old_blkaddr = ni.blk_addr; 1365faa24895SJaegeuk Kim write_node_page(nid, &fio); 1366faa24895SJaegeuk Kim set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1367faa24895SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1368faa24895SJaegeuk Kim up_read(&sbi->node_write); 1369faa24895SJaegeuk Kim 1370d68f735bSJaegeuk Kim if (wbc->for_reclaim) { 1371942fd319SJaegeuk Kim f2fs_submit_merged_bio_cond(sbi, page->mapping->host, 0, 1372942fd319SJaegeuk Kim page->index, NODE, WRITE); 1373d68f735bSJaegeuk Kim submitted = NULL; 1374d68f735bSJaegeuk Kim } 1375faa24895SJaegeuk Kim 1376faa24895SJaegeuk Kim unlock_page(page); 1377faa24895SJaegeuk Kim 1378d68f735bSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1379faa24895SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 1380d68f735bSJaegeuk Kim submitted = NULL; 1381d68f735bSJaegeuk Kim } 1382d68f735bSJaegeuk Kim if (submitted) 1383d68f735bSJaegeuk Kim *submitted = fio.submitted; 1384faa24895SJaegeuk Kim 1385faa24895SJaegeuk Kim return 0; 1386faa24895SJaegeuk Kim 1387faa24895SJaegeuk Kim redirty_out: 1388faa24895SJaegeuk Kim redirty_page_for_writepage(wbc, page); 1389faa24895SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1390faa24895SJaegeuk Kim } 1391faa24895SJaegeuk Kim 1392faa24895SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1393faa24895SJaegeuk Kim struct writeback_control *wbc) 1394faa24895SJaegeuk Kim { 1395d68f735bSJaegeuk Kim return __write_node_page(page, false, NULL, wbc); 1396faa24895SJaegeuk Kim } 1397faa24895SJaegeuk Kim 139826de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1399608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1400608514deSJaegeuk Kim { 1401608514deSJaegeuk Kim pgoff_t index, end; 1402942fd319SJaegeuk Kim pgoff_t last_idx = ULONG_MAX; 1403608514deSJaegeuk Kim struct pagevec pvec; 1404608514deSJaegeuk Kim int ret = 0; 1405608514deSJaegeuk Kim struct page *last_page = NULL; 1406608514deSJaegeuk Kim bool marked = false; 140726de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 1408608514deSJaegeuk Kim 1409608514deSJaegeuk Kim if (atomic) { 1410608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1411608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1412608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1413608514deSJaegeuk Kim } 1414608514deSJaegeuk Kim retry: 1415608514deSJaegeuk Kim pagevec_init(&pvec, 0); 1416608514deSJaegeuk Kim index = 0; 1417608514deSJaegeuk Kim end = ULONG_MAX; 1418608514deSJaegeuk Kim 1419608514deSJaegeuk Kim while (index <= end) { 1420608514deSJaegeuk Kim int i, nr_pages; 1421608514deSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1422608514deSJaegeuk Kim PAGECACHE_TAG_DIRTY, 1423608514deSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1424608514deSJaegeuk Kim if (nr_pages == 0) 1425608514deSJaegeuk Kim break; 1426608514deSJaegeuk Kim 1427608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1428608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1429d68f735bSJaegeuk Kim bool submitted = false; 1430608514deSJaegeuk Kim 1431608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1432608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1433608514deSJaegeuk Kim pagevec_release(&pvec); 14349de69279SChao Yu ret = -EIO; 14359de69279SChao Yu goto out; 1436608514deSJaegeuk Kim } 1437608514deSJaegeuk Kim 1438608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1439608514deSJaegeuk Kim continue; 1440608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1441608514deSJaegeuk Kim continue; 1442608514deSJaegeuk Kim 1443608514deSJaegeuk Kim lock_page(page); 1444608514deSJaegeuk Kim 1445608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1446608514deSJaegeuk Kim continue_unlock: 1447608514deSJaegeuk Kim unlock_page(page); 1448608514deSJaegeuk Kim continue; 1449608514deSJaegeuk Kim } 1450608514deSJaegeuk Kim if (ino_of_node(page) != ino) 145152681375SJaegeuk Kim goto continue_unlock; 145252681375SJaegeuk Kim 1453608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1454608514deSJaegeuk Kim /* someone wrote it for us */ 1455608514deSJaegeuk Kim goto continue_unlock; 1456608514deSJaegeuk Kim } 1457608514deSJaegeuk Kim 1458608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1459608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1460608514deSJaegeuk Kim 1461d29fd172SJaegeuk Kim set_fsync_mark(page, 0); 1462d29fd172SJaegeuk Kim set_dentry_mark(page, 0); 1463d29fd172SJaegeuk Kim 1464608514deSJaegeuk Kim if (!atomic || page == last_page) { 146552681375SJaegeuk Kim set_fsync_mark(page, 1); 146626de9b11SJaegeuk Kim if (IS_INODE(page)) { 146726de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 146826de9b11SJaegeuk Kim FI_DIRTY_INODE)) 146926de9b11SJaegeuk Kim update_inode(inode, page); 147052681375SJaegeuk Kim set_dentry_mark(page, 147152681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 147226de9b11SJaegeuk Kim } 1473608514deSJaegeuk Kim /* may be written by other thread */ 1474608514deSJaegeuk Kim if (!PageDirty(page)) 1475608514deSJaegeuk Kim set_page_dirty(page); 1476608514deSJaegeuk Kim } 1477608514deSJaegeuk Kim 1478608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1479608514deSJaegeuk Kim goto continue_unlock; 148052681375SJaegeuk Kim 1481e7c75ab0SJaegeuk Kim ret = __write_node_page(page, atomic && 1482d68f735bSJaegeuk Kim page == last_page, 1483d68f735bSJaegeuk Kim &submitted, wbc); 1484c267ec15SJaegeuk Kim if (ret) { 148552681375SJaegeuk Kim unlock_page(page); 1486608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1487608514deSJaegeuk Kim break; 1488d68f735bSJaegeuk Kim } else if (submitted) { 1489942fd319SJaegeuk Kim last_idx = page->index; 1490608514deSJaegeuk Kim } 14913f5f4959SChao Yu 1492608514deSJaegeuk Kim if (page == last_page) { 1493608514deSJaegeuk Kim f2fs_put_page(page, 0); 1494608514deSJaegeuk Kim marked = true; 149552681375SJaegeuk Kim break; 149652681375SJaegeuk Kim } 1497c267ec15SJaegeuk Kim } 149852681375SJaegeuk Kim pagevec_release(&pvec); 149952681375SJaegeuk Kim cond_resched(); 150052681375SJaegeuk Kim 1501608514deSJaegeuk Kim if (ret || marked) 150252681375SJaegeuk Kim break; 150352681375SJaegeuk Kim } 1504608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1505608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1506608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1507608514deSJaegeuk Kim ino, last_page->index); 1508608514deSJaegeuk Kim lock_page(last_page); 1509d40a43afSYunlei He f2fs_wait_on_page_writeback(last_page, NODE, true); 1510608514deSJaegeuk Kim set_page_dirty(last_page); 1511608514deSJaegeuk Kim unlock_page(last_page); 1512608514deSJaegeuk Kim goto retry; 1513608514deSJaegeuk Kim } 15149de69279SChao Yu out: 1515942fd319SJaegeuk Kim if (last_idx != ULONG_MAX) 1516942fd319SJaegeuk Kim f2fs_submit_merged_bio_cond(sbi, NULL, ino, last_idx, 1517942fd319SJaegeuk Kim NODE, WRITE); 1518c267ec15SJaegeuk Kim return ret ? -EIO: 0; 151952681375SJaegeuk Kim } 152052681375SJaegeuk Kim 152152681375SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc) 152252681375SJaegeuk Kim { 152352681375SJaegeuk Kim pgoff_t index, end; 152452681375SJaegeuk Kim struct pagevec pvec; 152552681375SJaegeuk Kim int step = 0; 152612bb0a8fSJaegeuk Kim int nwritten = 0; 15273f5f4959SChao Yu int ret = 0; 1528e05df3b1SJaegeuk Kim 1529e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1530e05df3b1SJaegeuk Kim 1531e05df3b1SJaegeuk Kim next_step: 1532e05df3b1SJaegeuk Kim index = 0; 153380dd9c0eSChao Yu end = ULONG_MAX; 1534e05df3b1SJaegeuk Kim 1535e05df3b1SJaegeuk Kim while (index <= end) { 1536e05df3b1SJaegeuk Kim int i, nr_pages; 15374ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1538e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1539e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1540e05df3b1SJaegeuk Kim if (nr_pages == 0) 1541e05df3b1SJaegeuk Kim break; 1542e05df3b1SJaegeuk Kim 1543e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1544e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1545d68f735bSJaegeuk Kim bool submitted = false; 1546e05df3b1SJaegeuk Kim 15476d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 15486d5a1495SChao Yu pagevec_release(&pvec); 15493f5f4959SChao Yu ret = -EIO; 15503f5f4959SChao Yu goto out; 15516d5a1495SChao Yu } 15526d5a1495SChao Yu 1553e05df3b1SJaegeuk Kim /* 1554e05df3b1SJaegeuk Kim * flushing sequence with step: 1555e05df3b1SJaegeuk Kim * 0. indirect nodes 1556e05df3b1SJaegeuk Kim * 1. dentry dnodes 1557e05df3b1SJaegeuk Kim * 2. file dnodes 1558e05df3b1SJaegeuk Kim */ 1559e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1560e05df3b1SJaegeuk Kim continue; 1561e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1562e05df3b1SJaegeuk Kim is_cold_node(page))) 1563e05df3b1SJaegeuk Kim continue; 1564e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1565e05df3b1SJaegeuk Kim !is_cold_node(page))) 1566e05df3b1SJaegeuk Kim continue; 15679a4cbc9eSChao Yu lock_node: 156852681375SJaegeuk Kim if (!trylock_page(page)) 1569e05df3b1SJaegeuk Kim continue; 1570e05df3b1SJaegeuk Kim 15714ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1572e05df3b1SJaegeuk Kim continue_unlock: 1573e05df3b1SJaegeuk Kim unlock_page(page); 1574e05df3b1SJaegeuk Kim continue; 1575e05df3b1SJaegeuk Kim } 1576e05df3b1SJaegeuk Kim 1577e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1578e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1579e05df3b1SJaegeuk Kim goto continue_unlock; 1580e05df3b1SJaegeuk Kim } 1581e05df3b1SJaegeuk Kim 15822049d4fcSJaegeuk Kim /* flush inline_data */ 158352681375SJaegeuk Kim if (is_inline_node(page)) { 15842049d4fcSJaegeuk Kim clear_inline_node(page); 15852049d4fcSJaegeuk Kim unlock_page(page); 15862049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 15879a4cbc9eSChao Yu goto lock_node; 15882049d4fcSJaegeuk Kim } 15892049d4fcSJaegeuk Kim 1590fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1591fa3d2bdfSJaegeuk Kim 1592fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1593e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1594e05df3b1SJaegeuk Kim goto continue_unlock; 1595e05df3b1SJaegeuk Kim 1596e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1597e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 159852746519SJaegeuk Kim 1599d68f735bSJaegeuk Kim ret = __write_node_page(page, false, &submitted, wbc); 1600d68f735bSJaegeuk Kim if (ret) 160152746519SJaegeuk Kim unlock_page(page); 1602d68f735bSJaegeuk Kim else if (submitted) 16033f5f4959SChao Yu nwritten++; 1604e05df3b1SJaegeuk Kim 1605e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1606e05df3b1SJaegeuk Kim break; 1607e05df3b1SJaegeuk Kim } 1608e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1609e05df3b1SJaegeuk Kim cond_resched(); 1610e05df3b1SJaegeuk Kim 1611e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1612e05df3b1SJaegeuk Kim step = 2; 1613e05df3b1SJaegeuk Kim break; 1614e05df3b1SJaegeuk Kim } 1615e05df3b1SJaegeuk Kim } 1616e05df3b1SJaegeuk Kim 1617e05df3b1SJaegeuk Kim if (step < 2) { 1618e05df3b1SJaegeuk Kim step++; 1619e05df3b1SJaegeuk Kim goto next_step; 1620e05df3b1SJaegeuk Kim } 16213f5f4959SChao Yu out: 16223f5f4959SChao Yu if (nwritten) 16233f5f4959SChao Yu f2fs_submit_merged_bio(sbi, NODE, WRITE); 16243f5f4959SChao Yu return ret; 1625e05df3b1SJaegeuk Kim } 1626e05df3b1SJaegeuk Kim 1627cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1628cfe58f9dSJaegeuk Kim { 162980dd9c0eSChao Yu pgoff_t index = 0, end = ULONG_MAX; 1630cfe58f9dSJaegeuk Kim struct pagevec pvec; 1631280db3c8SMiklos Szeredi int ret2, ret = 0; 1632cfe58f9dSJaegeuk Kim 1633cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 16344ef51a8fSJaegeuk Kim 16354ef51a8fSJaegeuk Kim while (index <= end) { 16364ef51a8fSJaegeuk Kim int i, nr_pages; 16374ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1638cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 16394ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 16404ef51a8fSJaegeuk Kim if (nr_pages == 0) 16414ef51a8fSJaegeuk Kim break; 1642cfe58f9dSJaegeuk Kim 1643cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1644cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1645cfe58f9dSJaegeuk Kim 1646cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1647cfb271d4SChao Yu if (unlikely(page->index > end)) 1648cfe58f9dSJaegeuk Kim continue; 1649cfe58f9dSJaegeuk Kim 16504bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1651fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1652cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1653cfe58f9dSJaegeuk Kim ret = -EIO; 1654cfe58f9dSJaegeuk Kim } 16554bf08ff6SChao Yu } 1656cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1657cfe58f9dSJaegeuk Kim cond_resched(); 1658cfe58f9dSJaegeuk Kim } 1659cfe58f9dSJaegeuk Kim 1660280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 1661cfe58f9dSJaegeuk Kim if (!ret) 1662cfe58f9dSJaegeuk Kim ret = ret2; 1663cfe58f9dSJaegeuk Kim return ret; 1664cfe58f9dSJaegeuk Kim } 1665cfe58f9dSJaegeuk Kim 1666e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1667e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1668e05df3b1SJaegeuk Kim { 16694081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 16709dfa1bafSJaegeuk Kim struct blk_plug plug; 167150c8cdb3SJaegeuk Kim long diff; 1672e05df3b1SJaegeuk Kim 16734660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 16744660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1675e05df3b1SJaegeuk Kim 1676a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 167787d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1678d3baf95dSJaegeuk Kim goto skip_write; 1679a7fdffbdSJaegeuk Kim 1680d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1681d31c7c3fSYunlei He 168250c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1683fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 16849dfa1bafSJaegeuk Kim blk_start_plug(&plug); 168552681375SJaegeuk Kim sync_node_pages(sbi, wbc); 16869dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 168750c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1688e05df3b1SJaegeuk Kim return 0; 1689d3baf95dSJaegeuk Kim 1690d3baf95dSJaegeuk Kim skip_write: 1691d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1692d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1693d3baf95dSJaegeuk Kim return 0; 1694e05df3b1SJaegeuk Kim } 1695e05df3b1SJaegeuk Kim 1696e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1697e05df3b1SJaegeuk Kim { 169826c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 169926c6b887SJaegeuk Kim 1700237c0790SJaegeuk Kim if (!PageUptodate(page)) 1701e05df3b1SJaegeuk Kim SetPageUptodate(page); 1702e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1703fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 17044081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1705e05df3b1SJaegeuk Kim SetPagePrivate(page); 17069e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1707e05df3b1SJaegeuk Kim return 1; 1708e05df3b1SJaegeuk Kim } 1709e05df3b1SJaegeuk Kim return 0; 1710e05df3b1SJaegeuk Kim } 1711e05df3b1SJaegeuk Kim 17120a8165d7SJaegeuk Kim /* 1713e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1714e05df3b1SJaegeuk Kim */ 1715e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1716e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1717e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1718e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1719487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1720487261f3SChao Yu .releasepage = f2fs_release_page, 17215b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 17225b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 17235b7a487cSWeichao Guo #endif 1724e05df3b1SJaegeuk Kim }; 1725e05df3b1SJaegeuk Kim 17268a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 17278a7ed66aSJaegeuk Kim nid_t n) 1728e05df3b1SJaegeuk Kim { 17298a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 17303aa770a9SNamjae Jeon } 1731e05df3b1SJaegeuk Kim 1732eb0aa4b8SJaegeuk Kim static int __insert_nid_to_list(struct f2fs_sb_info *sbi, 1733eb0aa4b8SJaegeuk Kim struct free_nid *i, enum nid_list list, bool new) 1734e05df3b1SJaegeuk Kim { 1735b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1736b8559dc2SChao Yu 1737eb0aa4b8SJaegeuk Kim if (new) { 1738eb0aa4b8SJaegeuk Kim int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); 1739eb0aa4b8SJaegeuk Kim if (err) 1740eb0aa4b8SJaegeuk Kim return err; 1741eb0aa4b8SJaegeuk Kim } 1742eb0aa4b8SJaegeuk Kim 1743b8559dc2SChao Yu f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW : 1744b8559dc2SChao Yu i->state != NID_ALLOC); 1745b8559dc2SChao Yu nm_i->nid_cnt[list]++; 1746b8559dc2SChao Yu list_add_tail(&i->list, &nm_i->nid_list[list]); 1747eb0aa4b8SJaegeuk Kim return 0; 1748b8559dc2SChao Yu } 1749b8559dc2SChao Yu 1750b8559dc2SChao Yu static void __remove_nid_from_list(struct f2fs_sb_info *sbi, 1751eb0aa4b8SJaegeuk Kim struct free_nid *i, enum nid_list list, bool reuse) 1752b8559dc2SChao Yu { 1753b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1754b8559dc2SChao Yu 1755b8559dc2SChao Yu f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW : 1756b8559dc2SChao Yu i->state != NID_ALLOC); 1757b8559dc2SChao Yu nm_i->nid_cnt[list]--; 1758e05df3b1SJaegeuk Kim list_del(&i->list); 1759eb0aa4b8SJaegeuk Kim if (!reuse) 17608a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1761e05df3b1SJaegeuk Kim } 1762e05df3b1SJaegeuk Kim 17634ac91242SChao Yu /* return if the nid is recognized as free */ 17644ac91242SChao Yu static bool add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1765e05df3b1SJaegeuk Kim { 17666fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 176730a61ddfSChao Yu struct free_nid *i, *e; 176859bbd474SJaegeuk Kim struct nat_entry *ne; 176930a61ddfSChao Yu int err = -EINVAL; 177030a61ddfSChao Yu bool ret = false; 17719198acebSJaegeuk Kim 17729198acebSJaegeuk Kim /* 0 nid should not be used */ 1773cfb271d4SChao Yu if (unlikely(nid == 0)) 17744ac91242SChao Yu return false; 177559bbd474SJaegeuk Kim 17767bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1777e05df3b1SJaegeuk Kim i->nid = nid; 1778e05df3b1SJaegeuk Kim i->state = NID_NEW; 1779e05df3b1SJaegeuk Kim 178030a61ddfSChao Yu if (radix_tree_preload(GFP_NOFS)) 178130a61ddfSChao Yu goto err; 1782769ec6e5SJaegeuk Kim 1783b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 178430a61ddfSChao Yu 178530a61ddfSChao Yu if (build) { 178630a61ddfSChao Yu /* 178730a61ddfSChao Yu * Thread A Thread B 178830a61ddfSChao Yu * - f2fs_create 178930a61ddfSChao Yu * - f2fs_new_inode 179030a61ddfSChao Yu * - alloc_nid 179130a61ddfSChao Yu * - __insert_nid_to_list(ALLOC_NID_LIST) 179230a61ddfSChao Yu * - f2fs_balance_fs_bg 179330a61ddfSChao Yu * - build_free_nids 179430a61ddfSChao Yu * - __build_free_nids 179530a61ddfSChao Yu * - scan_nat_page 179630a61ddfSChao Yu * - add_free_nid 179730a61ddfSChao Yu * - __lookup_nat_cache 179830a61ddfSChao Yu * - f2fs_add_link 179930a61ddfSChao Yu * - init_inode_metadata 180030a61ddfSChao Yu * - new_inode_page 180130a61ddfSChao Yu * - new_node_page 180230a61ddfSChao Yu * - set_node_addr 180330a61ddfSChao Yu * - alloc_nid_done 180430a61ddfSChao Yu * - __remove_nid_from_list(ALLOC_NID_LIST) 180530a61ddfSChao Yu * - __insert_nid_to_list(FREE_NID_LIST) 180630a61ddfSChao Yu */ 180730a61ddfSChao Yu ne = __lookup_nat_cache(nm_i, nid); 180830a61ddfSChao Yu if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 180930a61ddfSChao Yu nat_get_blkaddr(ne) != NULL_ADDR)) 181030a61ddfSChao Yu goto err_out; 181130a61ddfSChao Yu 181230a61ddfSChao Yu e = __lookup_free_nid_list(nm_i, nid); 181330a61ddfSChao Yu if (e) { 181430a61ddfSChao Yu if (e->state == NID_NEW) 181530a61ddfSChao Yu ret = true; 181630a61ddfSChao Yu goto err_out; 181730a61ddfSChao Yu } 181830a61ddfSChao Yu } 181930a61ddfSChao Yu ret = true; 1820eb0aa4b8SJaegeuk Kim err = __insert_nid_to_list(sbi, i, FREE_NID_LIST, true); 182130a61ddfSChao Yu err_out: 1822b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1823769ec6e5SJaegeuk Kim radix_tree_preload_end(); 182430a61ddfSChao Yu err: 182530a61ddfSChao Yu if (err) 1826e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 182730a61ddfSChao Yu return ret; 1828e05df3b1SJaegeuk Kim } 1829e05df3b1SJaegeuk Kim 1830b8559dc2SChao Yu static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) 1831e05df3b1SJaegeuk Kim { 1832b8559dc2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 1833e05df3b1SJaegeuk Kim struct free_nid *i; 1834cf0ee0f0SChao Yu bool need_free = false; 1835cf0ee0f0SChao Yu 1836b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 18378a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1838e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 1839eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); 1840cf0ee0f0SChao Yu need_free = true; 1841e05df3b1SJaegeuk Kim } 1842b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 1843cf0ee0f0SChao Yu 1844cf0ee0f0SChao Yu if (need_free) 1845cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1846e05df3b1SJaegeuk Kim } 1847e05df3b1SJaegeuk Kim 18489f7e4a2cSJaegeuk Kim static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, 1849346fe752SChao Yu bool set, bool build) 18504ac91242SChao Yu { 18514ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 18524ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); 18534ac91242SChao Yu unsigned int nid_ofs = nid - START_NID(nid); 18544ac91242SChao Yu 18554ac91242SChao Yu if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 18564ac91242SChao Yu return; 18574ac91242SChao Yu 18584ac91242SChao Yu if (set) 185923380b85SJaegeuk Kim __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 18604ac91242SChao Yu else 186123380b85SJaegeuk Kim __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); 1862586d1492SChao Yu 1863586d1492SChao Yu if (set) 1864586d1492SChao Yu nm_i->free_nid_count[nat_ofs]++; 1865586d1492SChao Yu else if (!build) 1866586d1492SChao Yu nm_i->free_nid_count[nat_ofs]--; 18674ac91242SChao Yu } 18684ac91242SChao Yu 18696fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1870e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1871e05df3b1SJaegeuk Kim { 18726fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1873e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1874e05df3b1SJaegeuk Kim block_t blk_addr; 18754ac91242SChao Yu unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); 1876e05df3b1SJaegeuk Kim int i; 1877e05df3b1SJaegeuk Kim 1878586d1492SChao Yu if (test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) 1879586d1492SChao Yu return; 1880586d1492SChao Yu 188123380b85SJaegeuk Kim __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); 18824ac91242SChao Yu 1883e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1884e05df3b1SJaegeuk Kim 1885e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 18864ac91242SChao Yu bool freed = false; 188723d38844SHaicheng Li 1888cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 188904431c44SJaegeuk Kim break; 189023d38844SHaicheng Li 1891e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 18929850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 18933a2ad567SChao Yu if (blk_addr == NULL_ADDR) 18944ac91242SChao Yu freed = add_free_nid(sbi, start_nid, true); 1895346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 1896346fe752SChao Yu update_free_nid_bitmap(sbi, start_nid, freed, true); 1897346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 1898e05df3b1SJaegeuk Kim } 1899e05df3b1SJaegeuk Kim } 1900e05df3b1SJaegeuk Kim 19014ac91242SChao Yu static void scan_free_nid_bits(struct f2fs_sb_info *sbi) 19024ac91242SChao Yu { 19034ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 19044ac91242SChao Yu struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 19054ac91242SChao Yu struct f2fs_journal *journal = curseg->journal; 19064ac91242SChao Yu unsigned int i, idx; 19074ac91242SChao Yu 19084ac91242SChao Yu down_read(&nm_i->nat_tree_lock); 19094ac91242SChao Yu 19104ac91242SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 19114ac91242SChao Yu if (!test_bit_le(i, nm_i->nat_block_bitmap)) 19124ac91242SChao Yu continue; 1913586d1492SChao Yu if (!nm_i->free_nid_count[i]) 1914586d1492SChao Yu continue; 19154ac91242SChao Yu for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { 19164ac91242SChao Yu nid_t nid; 19174ac91242SChao Yu 19184ac91242SChao Yu if (!test_bit_le(idx, nm_i->free_nid_bitmap[i])) 19194ac91242SChao Yu continue; 19204ac91242SChao Yu 19214ac91242SChao Yu nid = i * NAT_ENTRY_PER_BLOCK + idx; 19224ac91242SChao Yu add_free_nid(sbi, nid, true); 19234ac91242SChao Yu 1924f0cdbfe6SKinglong Mee if (nm_i->nid_cnt[FREE_NID_LIST] >= MAX_FREE_NIDS) 19254ac91242SChao Yu goto out; 19264ac91242SChao Yu } 19274ac91242SChao Yu } 19284ac91242SChao Yu out: 19294ac91242SChao Yu down_read(&curseg->journal_rwsem); 19304ac91242SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 19314ac91242SChao Yu block_t addr; 19324ac91242SChao Yu nid_t nid; 19334ac91242SChao Yu 19344ac91242SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 19354ac91242SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 19364ac91242SChao Yu if (addr == NULL_ADDR) 19374ac91242SChao Yu add_free_nid(sbi, nid, true); 19384ac91242SChao Yu else 19394ac91242SChao Yu remove_free_nid(sbi, nid); 19404ac91242SChao Yu } 19414ac91242SChao Yu up_read(&curseg->journal_rwsem); 19424ac91242SChao Yu up_read(&nm_i->nat_tree_lock); 19434ac91242SChao Yu } 19444ac91242SChao Yu 194522ad0b6aSJaegeuk Kim static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 1946e05df3b1SJaegeuk Kim { 1947e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1948e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1949b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 19508760952dSHaicheng Li int i = 0; 195155008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1952e05df3b1SJaegeuk Kim 195355008d84SJaegeuk Kim /* Enough entries */ 1954b8559dc2SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST] >= NAT_ENTRY_PER_BLOCK) 195555008d84SJaegeuk Kim return; 1956e05df3b1SJaegeuk Kim 19573a2ad567SChao Yu if (!sync && !available_free_memory(sbi, FREE_NIDS)) 1958e05df3b1SJaegeuk Kim return; 1959e05df3b1SJaegeuk Kim 19604ac91242SChao Yu if (!mount) { 19614ac91242SChao Yu /* try to find free nids in free_nid_bitmap */ 19624ac91242SChao Yu scan_free_nid_bits(sbi); 19634ac91242SChao Yu 19644ac91242SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST]) 196522ad0b6aSJaegeuk Kim return; 196622ad0b6aSJaegeuk Kim } 196722ad0b6aSJaegeuk Kim 196855008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 196926879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 197026879fb1SChao Yu META_NAT, true); 1971e05df3b1SJaegeuk Kim 1972b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 1973a5131193SJaegeuk Kim 1974e05df3b1SJaegeuk Kim while (1) { 1975e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1976e05df3b1SJaegeuk Kim 19776fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1978e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1979e05df3b1SJaegeuk Kim 1980e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1981cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1982e05df3b1SJaegeuk Kim nid = 0; 198355008d84SJaegeuk Kim 1984a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1985e05df3b1SJaegeuk Kim break; 1986e05df3b1SJaegeuk Kim } 1987e05df3b1SJaegeuk Kim 198855008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 198955008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1990e05df3b1SJaegeuk Kim 1991e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1992b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 1993dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 1994dfc08a12SChao Yu block_t addr; 1995dfc08a12SChao Yu 1996dfc08a12SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 1997dfc08a12SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 1998e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 19996fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 2000e05df3b1SJaegeuk Kim else 2001b8559dc2SChao Yu remove_free_nid(sbi, nid); 2002e05df3b1SJaegeuk Kim } 2003b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 2004b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 20052db2388fSChao Yu 20062db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 2007ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 2008e05df3b1SJaegeuk Kim } 2009e05df3b1SJaegeuk Kim 201022ad0b6aSJaegeuk Kim void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) 20112411cf5bSChao Yu { 20122411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 201322ad0b6aSJaegeuk Kim __build_free_nids(sbi, sync, mount); 20142411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 20152411cf5bSChao Yu } 20162411cf5bSChao Yu 2017e05df3b1SJaegeuk Kim /* 2018e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 2019e05df3b1SJaegeuk Kim * from second parameter of this function. 2020e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 2021e05df3b1SJaegeuk Kim */ 2022e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 2023e05df3b1SJaegeuk Kim { 2024e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2025e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 2026e05df3b1SJaegeuk Kim retry: 2027cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 202855523519SChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) { 202955523519SChao Yu f2fs_show_injection_info(FAULT_ALLOC_NID); 2030cb78942bSJaegeuk Kim return false; 203155523519SChao Yu } 2032cb78942bSJaegeuk Kim #endif 2033b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2034e05df3b1SJaegeuk Kim 203504d47e67SChao Yu if (unlikely(nm_i->available_nids == 0)) { 203604d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 203704d47e67SChao Yu return false; 203804d47e67SChao Yu } 2039e05df3b1SJaegeuk Kim 204055008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 2041b8559dc2SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST] && !on_build_free_nids(nm_i)) { 2042b8559dc2SChao Yu f2fs_bug_on(sbi, list_empty(&nm_i->nid_list[FREE_NID_LIST])); 2043b8559dc2SChao Yu i = list_first_entry(&nm_i->nid_list[FREE_NID_LIST], 2044b8559dc2SChao Yu struct free_nid, list); 2045e05df3b1SJaegeuk Kim *nid = i->nid; 2046b8559dc2SChao Yu 2047eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, true); 2048e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 2049eb0aa4b8SJaegeuk Kim __insert_nid_to_list(sbi, i, ALLOC_NID_LIST, false); 205004d47e67SChao Yu nm_i->available_nids--; 20514ac91242SChao Yu 2052346fe752SChao Yu update_free_nid_bitmap(sbi, *nid, false, false); 20534ac91242SChao Yu 2054b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2055e05df3b1SJaegeuk Kim return true; 2056e05df3b1SJaegeuk Kim } 2057b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 205855008d84SJaegeuk Kim 205955008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 206022ad0b6aSJaegeuk Kim build_free_nids(sbi, true, false); 206155008d84SJaegeuk Kim goto retry; 206255008d84SJaegeuk Kim } 2063e05df3b1SJaegeuk Kim 20640a8165d7SJaegeuk Kim /* 2065e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2066e05df3b1SJaegeuk Kim */ 2067e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 2068e05df3b1SJaegeuk Kim { 2069e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2070e05df3b1SJaegeuk Kim struct free_nid *i; 2071e05df3b1SJaegeuk Kim 2072b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 20738a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2074b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2075eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false); 2076b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2077cf0ee0f0SChao Yu 2078cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2079e05df3b1SJaegeuk Kim } 2080e05df3b1SJaegeuk Kim 20810a8165d7SJaegeuk Kim /* 2082e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 2083e05df3b1SJaegeuk Kim */ 2084e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 2085e05df3b1SJaegeuk Kim { 208649952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 208749952fa1SJaegeuk Kim struct free_nid *i; 2088cf0ee0f0SChao Yu bool need_free = false; 208949952fa1SJaegeuk Kim 209065985d93SJaegeuk Kim if (!nid) 209165985d93SJaegeuk Kim return; 209265985d93SJaegeuk Kim 2093b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 20948a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 2095b8559dc2SChao Yu f2fs_bug_on(sbi, !i); 2096b8559dc2SChao Yu 20976fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 2098eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false); 2099cf0ee0f0SChao Yu need_free = true; 210095630cbaSHaicheng Li } else { 2101eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, true); 210249952fa1SJaegeuk Kim i->state = NID_NEW; 2103eb0aa4b8SJaegeuk Kim __insert_nid_to_list(sbi, i, FREE_NID_LIST, false); 210495630cbaSHaicheng Li } 210504d47e67SChao Yu 210604d47e67SChao Yu nm_i->available_nids++; 210704d47e67SChao Yu 2108346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 21094ac91242SChao Yu 2110b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2111cf0ee0f0SChao Yu 2112cf0ee0f0SChao Yu if (need_free) 2113cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2114e05df3b1SJaegeuk Kim } 2115e05df3b1SJaegeuk Kim 211631696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 211731696580SChao Yu { 211831696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 211931696580SChao Yu struct free_nid *i, *next; 212031696580SChao Yu int nr = nr_shrink; 212131696580SChao Yu 2122b8559dc2SChao Yu if (nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS) 2123ad4edb83SJaegeuk Kim return 0; 2124ad4edb83SJaegeuk Kim 212531696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 212631696580SChao Yu return 0; 212731696580SChao Yu 2128b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2129b8559dc2SChao Yu list_for_each_entry_safe(i, next, &nm_i->nid_list[FREE_NID_LIST], 2130b8559dc2SChao Yu list) { 2131b8559dc2SChao Yu if (nr_shrink <= 0 || 2132b8559dc2SChao Yu nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS) 213331696580SChao Yu break; 2134b8559dc2SChao Yu 2135eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); 213631696580SChao Yu kmem_cache_free(free_nid_slab, i); 213731696580SChao Yu nr_shrink--; 213831696580SChao Yu } 2139b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 214031696580SChao Yu mutex_unlock(&nm_i->build_lock); 214131696580SChao Yu 214231696580SChao Yu return nr - nr_shrink; 214331696580SChao Yu } 214431696580SChao Yu 214570cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 214628cdce04SChao Yu { 214728cdce04SChao Yu void *src_addr, *dst_addr; 214828cdce04SChao Yu size_t inline_size; 214928cdce04SChao Yu struct page *ipage; 215028cdce04SChao Yu struct f2fs_inode *ri; 215128cdce04SChao Yu 21524081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 21539850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 215428cdce04SChao Yu 2155e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 2156e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 215791942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 2158e3b4d43fSJaegeuk Kim goto update_inode; 2159e3b4d43fSJaegeuk Kim } 2160e3b4d43fSJaegeuk Kim 216128cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 216228cdce04SChao Yu src_addr = inline_xattr_addr(page); 216328cdce04SChao Yu inline_size = inline_xattr_size(inode); 216428cdce04SChao Yu 2165fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 216628cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 2167e3b4d43fSJaegeuk Kim update_inode: 216828cdce04SChao Yu update_inode(inode, ipage); 216928cdce04SChao Yu f2fs_put_page(ipage, 1); 217028cdce04SChao Yu } 217128cdce04SChao Yu 2172d260081cSChao Yu int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 2173abb2366cSJaegeuk Kim { 21744081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2175abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 2176abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 2177abb2366cSJaegeuk Kim struct node_info ni; 2178d260081cSChao Yu struct page *xpage; 2179abb2366cSJaegeuk Kim 2180abb2366cSJaegeuk Kim if (!prev_xnid) 2181abb2366cSJaegeuk Kim goto recover_xnid; 2182abb2366cSJaegeuk Kim 2183d260081cSChao Yu /* 1: invalidate the previous xattr nid */ 2184abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 21859850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 2186abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 2187abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 2188479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2189abb2366cSJaegeuk Kim 2190abb2366cSJaegeuk Kim recover_xnid: 2191d260081cSChao Yu /* 2: update xattr nid in inode */ 2192d260081cSChao Yu remove_free_nid(sbi, new_xnid); 2193d260081cSChao Yu f2fs_i_xnid_write(inode, new_xnid); 2194abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 21959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 2196d260081cSChao Yu update_inode_page(inode); 2197abb2366cSJaegeuk Kim 2198d260081cSChao Yu /* 3: update and set xattr node page dirty */ 2199d260081cSChao Yu xpage = grab_cache_page(NODE_MAPPING(sbi), new_xnid); 2200d260081cSChao Yu if (!xpage) 2201d260081cSChao Yu return -ENOMEM; 2202d260081cSChao Yu 2203d260081cSChao Yu memcpy(F2FS_NODE(xpage), F2FS_NODE(page), PAGE_SIZE); 2204d260081cSChao Yu 2205abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 2206abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 2207479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 2208d260081cSChao Yu set_page_dirty(xpage); 2209d260081cSChao Yu f2fs_put_page(xpage, 1); 2210abb2366cSJaegeuk Kim 2211d260081cSChao Yu return 0; 2212abb2366cSJaegeuk Kim } 2213abb2366cSJaegeuk Kim 2214e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2215e05df3b1SJaegeuk Kim { 221658bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2217e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2218e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2219e05df3b1SJaegeuk Kim struct page *ipage; 2220e05df3b1SJaegeuk Kim 2221e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2222e8271fa3SJaegeuk Kim 2223e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2224e8271fa3SJaegeuk Kim return -EINVAL; 2225e8ea9b3dSJaegeuk Kim retry: 2226300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2227e8ea9b3dSJaegeuk Kim if (!ipage) { 2228e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2229e8ea9b3dSJaegeuk Kim goto retry; 2230e8ea9b3dSJaegeuk Kim } 2231e05df3b1SJaegeuk Kim 2232e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2233b8559dc2SChao Yu remove_free_nid(sbi, ino); 2234e05df3b1SJaegeuk Kim 2235237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2236e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2237e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2238e05df3b1SJaegeuk Kim 223958bfaf44SJaegeuk Kim src = F2FS_INODE(page); 224058bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2241e05df3b1SJaegeuk Kim 224258bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 224358bfaf44SJaegeuk Kim dst->i_size = 0; 224458bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 224558bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 224658bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 2247617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 2248e05df3b1SJaegeuk Kim 2249e05df3b1SJaegeuk Kim new_ni = old_ni; 2250e05df3b1SJaegeuk Kim new_ni.ino = ino; 2251e05df3b1SJaegeuk Kim 2252cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 225365e5cd0aSJaegeuk Kim WARN_ON(1); 2254479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2255e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2256617deb8cSJaegeuk Kim set_page_dirty(ipage); 2257e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2258e05df3b1SJaegeuk Kim return 0; 2259e05df3b1SJaegeuk Kim } 2260e05df3b1SJaegeuk Kim 2261e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 2262e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2263e05df3b1SJaegeuk Kim { 2264e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2265e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2266e05df3b1SJaegeuk Kim block_t addr; 22679ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2268e05df3b1SJaegeuk Kim 2269e05df3b1SJaegeuk Kim /* scan the node segment */ 2270e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2271e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2272e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2273e05df3b1SJaegeuk Kim 22749ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 2275664ba972SJaegeuk Kim nrpages = min(last_offset - i, BIO_MAX_PAGES); 2276393ff91fSJaegeuk Kim 22779af0ff1cSChao Yu /* readahead node pages */ 227826879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 22799af0ff1cSChao Yu 22809ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 22812b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2282393ff91fSJaegeuk Kim 22839ecf4b80SChao Yu rn = F2FS_NODE(page); 2284393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2285393ff91fSJaegeuk Kim sum_entry->version = 0; 2286393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 22879af0ff1cSChao Yu sum_entry++; 22889ecf4b80SChao Yu f2fs_put_page(page, 1); 22899af0ff1cSChao Yu } 2290bac4eef6SChao Yu 22919ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2292bac4eef6SChao Yu addr + nrpages); 22939af0ff1cSChao Yu } 22949ecf4b80SChao Yu return 0; 2295e05df3b1SJaegeuk Kim } 2296e05df3b1SJaegeuk Kim 2297aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2298e05df3b1SJaegeuk Kim { 2299e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2300e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2301b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2302e05df3b1SJaegeuk Kim int i; 2303e05df3b1SJaegeuk Kim 2304b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2305dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2306e05df3b1SJaegeuk Kim struct nat_entry *ne; 2307e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2308dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2309e05df3b1SJaegeuk Kim 2310dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 23119be32d72SJaegeuk Kim 2312e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2313e05df3b1SJaegeuk Kim if (!ne) { 23145c9e4184SChao Yu ne = grab_nat_entry(nm_i, nid, true); 231594dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 23169be32d72SJaegeuk Kim } 231704d47e67SChao Yu 231804d47e67SChao Yu /* 231904d47e67SChao Yu * if a free nat in journal has not been used after last 232004d47e67SChao Yu * checkpoint, we should remove it from available nids, 232104d47e67SChao Yu * since later we will add it again. 232204d47e67SChao Yu */ 232304d47e67SChao Yu if (!get_nat_flag(ne, IS_DIRTY) && 232404d47e67SChao Yu le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { 232504d47e67SChao Yu spin_lock(&nm_i->nid_list_lock); 232604d47e67SChao Yu nm_i->available_nids--; 232704d47e67SChao Yu spin_unlock(&nm_i->nid_list_lock); 232804d47e67SChao Yu } 232904d47e67SChao Yu 2330e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2331e05df3b1SJaegeuk Kim } 2332dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2333b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2334e05df3b1SJaegeuk Kim } 2335e05df3b1SJaegeuk Kim 2336309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2337309cc2b6SJaegeuk Kim struct list_head *head, int max) 2338e05df3b1SJaegeuk Kim { 2339309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2340e05df3b1SJaegeuk Kim 2341309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2342309cc2b6SJaegeuk Kim goto add_out; 2343e05df3b1SJaegeuk Kim 2344309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2345309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2346309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2347309cc2b6SJaegeuk Kim return; 2348309cc2b6SJaegeuk Kim } 2349309cc2b6SJaegeuk Kim } 2350309cc2b6SJaegeuk Kim add_out: 2351309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2352aec71382SChao Yu } 2353aec71382SChao Yu 23549f7e4a2cSJaegeuk Kim static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, 235522ad0b6aSJaegeuk Kim struct page *page) 235622ad0b6aSJaegeuk Kim { 235722ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 235822ad0b6aSJaegeuk Kim unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; 235922ad0b6aSJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(page); 236022ad0b6aSJaegeuk Kim int valid = 0; 236122ad0b6aSJaegeuk Kim int i; 236222ad0b6aSJaegeuk Kim 236322ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 236422ad0b6aSJaegeuk Kim return; 236522ad0b6aSJaegeuk Kim 236622ad0b6aSJaegeuk Kim for (i = 0; i < NAT_ENTRY_PER_BLOCK; i++) { 236722ad0b6aSJaegeuk Kim if (start_nid == 0 && i == 0) 236822ad0b6aSJaegeuk Kim valid++; 236922ad0b6aSJaegeuk Kim if (nat_blk->entries[i].block_addr) 237022ad0b6aSJaegeuk Kim valid++; 237122ad0b6aSJaegeuk Kim } 237222ad0b6aSJaegeuk Kim if (valid == 0) { 237323380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->empty_nat_bits); 237423380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 237522ad0b6aSJaegeuk Kim return; 237622ad0b6aSJaegeuk Kim } 237722ad0b6aSJaegeuk Kim 237823380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->empty_nat_bits); 237922ad0b6aSJaegeuk Kim if (valid == NAT_ENTRY_PER_BLOCK) 238023380b85SJaegeuk Kim __set_bit_le(nat_index, nm_i->full_nat_bits); 238122ad0b6aSJaegeuk Kim else 238223380b85SJaegeuk Kim __clear_bit_le(nat_index, nm_i->full_nat_bits); 238322ad0b6aSJaegeuk Kim } 238422ad0b6aSJaegeuk Kim 2385309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 238622ad0b6aSJaegeuk Kim struct nat_entry_set *set, struct cp_control *cpc) 2387309cc2b6SJaegeuk Kim { 2388309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2389b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2390309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2391309cc2b6SJaegeuk Kim bool to_journal = true; 2392309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2393309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2394309cc2b6SJaegeuk Kim struct page *page = NULL; 2395aec71382SChao Yu 2396aec71382SChao Yu /* 2397aec71382SChao Yu * there are two steps to flush nat entries: 2398aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2399aec71382SChao Yu * #2, flush nat entries to nat page. 2400aec71382SChao Yu */ 240122ad0b6aSJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 240222ad0b6aSJaegeuk Kim !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2403aec71382SChao Yu to_journal = false; 2404aec71382SChao Yu 2405aec71382SChao Yu if (to_journal) { 2406b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2407aec71382SChao Yu } else { 2408e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2409e05df3b1SJaegeuk Kim nat_blk = page_address(page); 24109850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2411e05df3b1SJaegeuk Kim } 2412e05df3b1SJaegeuk Kim 2413aec71382SChao Yu /* flush dirty nats in nat entry set */ 2414309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2415aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2416aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2417aec71382SChao Yu int offset; 2418aec71382SChao Yu 2419309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 2420309cc2b6SJaegeuk Kim continue; 2421309cc2b6SJaegeuk Kim 2422aec71382SChao Yu if (to_journal) { 2423dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2424aec71382SChao Yu NAT_JOURNAL, nid, 1); 24259850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2426dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2427dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2428aec71382SChao Yu } else { 2429aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2430aec71382SChao Yu } 2431aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 243288bd02c9SJaegeuk Kim nat_reset_flag(ne); 24330b28b71eSKinglong Mee __clear_nat_cache_dirty(NM_I(sbi), set, ne); 243404d47e67SChao Yu if (nat_get_blkaddr(ne) == NULL_ADDR) { 2435309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 243604d47e67SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 243704d47e67SChao Yu NM_I(sbi)->available_nids++; 2438346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, false); 24394ac91242SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 24404ac91242SChao Yu } else { 24414ac91242SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 2442346fe752SChao Yu update_free_nid_bitmap(sbi, nid, false, false); 244304d47e67SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 244404d47e67SChao Yu } 2445e05df3b1SJaegeuk Kim } 2446aec71382SChao Yu 244722ad0b6aSJaegeuk Kim if (to_journal) { 2448b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 244922ad0b6aSJaegeuk Kim } else { 245022ad0b6aSJaegeuk Kim __update_nat_bits(sbi, start_nid, page); 2451e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 245222ad0b6aSJaegeuk Kim } 2453aec71382SChao Yu 245459c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 245559c9081bSYunlei He if (!set->entry_cnt) { 2456309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2457309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2458309cc2b6SJaegeuk Kim } 245959c9081bSYunlei He } 2460aec71382SChao Yu 2461309cc2b6SJaegeuk Kim /* 2462309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2463309cc2b6SJaegeuk Kim */ 246422ad0b6aSJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 2465309cc2b6SJaegeuk Kim { 2466309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2467309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2468b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 24697aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2470309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2471309cc2b6SJaegeuk Kim unsigned int found; 2472309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2473309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2474309cc2b6SJaegeuk Kim 247520d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 247620d047c8SChangman Lee return; 2477a5131193SJaegeuk Kim 2478b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2479a5131193SJaegeuk Kim 2480309cc2b6SJaegeuk Kim /* 2481309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2482309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2483309cc2b6SJaegeuk Kim * into nat entry set. 2484309cc2b6SJaegeuk Kim */ 2485900f7362SJaegeuk Kim if (enabled_nat_bits(sbi, cpc) || 248622ad0b6aSJaegeuk Kim !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2487309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2488309cc2b6SJaegeuk Kim 2489309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 24907aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2491309cc2b6SJaegeuk Kim unsigned idx; 2492309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2493309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2494309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2495dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2496309cc2b6SJaegeuk Kim } 2497309cc2b6SJaegeuk Kim 2498309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2499309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 250022ad0b6aSJaegeuk Kim __flush_nat_entry_set(sbi, set, cpc); 2501309cc2b6SJaegeuk Kim 2502b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 250359c9081bSYunlei He /* Allow dirty nats by node block allocation in write_begin */ 2504e05df3b1SJaegeuk Kim } 2505e05df3b1SJaegeuk Kim 250622ad0b6aSJaegeuk Kim static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) 250722ad0b6aSJaegeuk Kim { 250822ad0b6aSJaegeuk Kim struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 250922ad0b6aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 251022ad0b6aSJaegeuk Kim unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; 251122ad0b6aSJaegeuk Kim unsigned int i; 251222ad0b6aSJaegeuk Kim __u64 cp_ver = cur_cp_version(ckpt); 251322ad0b6aSJaegeuk Kim block_t nat_bits_addr; 251422ad0b6aSJaegeuk Kim 251522ad0b6aSJaegeuk Kim if (!enabled_nat_bits(sbi, NULL)) 251622ad0b6aSJaegeuk Kim return 0; 251722ad0b6aSJaegeuk Kim 251822ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + 251922ad0b6aSJaegeuk Kim F2FS_BLKSIZE - 1); 252022ad0b6aSJaegeuk Kim nm_i->nat_bits = kzalloc(nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, 252122ad0b6aSJaegeuk Kim GFP_KERNEL); 252222ad0b6aSJaegeuk Kim if (!nm_i->nat_bits) 252322ad0b6aSJaegeuk Kim return -ENOMEM; 252422ad0b6aSJaegeuk Kim 252522ad0b6aSJaegeuk Kim nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - 252622ad0b6aSJaegeuk Kim nm_i->nat_bits_blocks; 252722ad0b6aSJaegeuk Kim for (i = 0; i < nm_i->nat_bits_blocks; i++) { 252822ad0b6aSJaegeuk Kim struct page *page = get_meta_page(sbi, nat_bits_addr++); 252922ad0b6aSJaegeuk Kim 253022ad0b6aSJaegeuk Kim memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), 253122ad0b6aSJaegeuk Kim page_address(page), F2FS_BLKSIZE); 253222ad0b6aSJaegeuk Kim f2fs_put_page(page, 1); 253322ad0b6aSJaegeuk Kim } 253422ad0b6aSJaegeuk Kim 2535ced2c7eaSKinglong Mee cp_ver |= (cur_cp_crc(ckpt) << 32); 253622ad0b6aSJaegeuk Kim if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { 253722ad0b6aSJaegeuk Kim disable_nat_bits(sbi, true); 253822ad0b6aSJaegeuk Kim return 0; 253922ad0b6aSJaegeuk Kim } 254022ad0b6aSJaegeuk Kim 254122ad0b6aSJaegeuk Kim nm_i->full_nat_bits = nm_i->nat_bits + 8; 254222ad0b6aSJaegeuk Kim nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; 254322ad0b6aSJaegeuk Kim 254422ad0b6aSJaegeuk Kim f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); 254522ad0b6aSJaegeuk Kim return 0; 254622ad0b6aSJaegeuk Kim } 254722ad0b6aSJaegeuk Kim 25487041d5d2SChao Yu inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) 25497041d5d2SChao Yu { 25507041d5d2SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 25517041d5d2SChao Yu unsigned int i = 0; 25527041d5d2SChao Yu nid_t nid, last_nid; 25537041d5d2SChao Yu 25547041d5d2SChao Yu if (!enabled_nat_bits(sbi, NULL)) 25557041d5d2SChao Yu return; 25567041d5d2SChao Yu 25577041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 25587041d5d2SChao Yu i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); 25597041d5d2SChao Yu if (i >= nm_i->nat_blocks) 25607041d5d2SChao Yu break; 25617041d5d2SChao Yu 25627041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 25637041d5d2SChao Yu 25647041d5d2SChao Yu nid = i * NAT_ENTRY_PER_BLOCK; 25657041d5d2SChao Yu last_nid = (i + 1) * NAT_ENTRY_PER_BLOCK; 25667041d5d2SChao Yu 2567346fe752SChao Yu spin_lock(&NM_I(sbi)->nid_list_lock); 25687041d5d2SChao Yu for (; nid < last_nid; nid++) 2569346fe752SChao Yu update_free_nid_bitmap(sbi, nid, true, true); 2570346fe752SChao Yu spin_unlock(&NM_I(sbi)->nid_list_lock); 25717041d5d2SChao Yu } 25727041d5d2SChao Yu 25737041d5d2SChao Yu for (i = 0; i < nm_i->nat_blocks; i++) { 25747041d5d2SChao Yu i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); 25757041d5d2SChao Yu if (i >= nm_i->nat_blocks) 25767041d5d2SChao Yu break; 25777041d5d2SChao Yu 25787041d5d2SChao Yu __set_bit_le(i, nm_i->nat_block_bitmap); 25797041d5d2SChao Yu } 25807041d5d2SChao Yu } 25817041d5d2SChao Yu 2582e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2583e05df3b1SJaegeuk Kim { 2584e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2585e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2586e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 258722ad0b6aSJaegeuk Kim unsigned int nat_segs; 258822ad0b6aSJaegeuk Kim int err; 2589e05df3b1SJaegeuk Kim 2590e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2591e05df3b1SJaegeuk Kim 2592e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2593e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 259422ad0b6aSJaegeuk Kim nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 259522ad0b6aSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; 25967ee0eeabSJaegeuk Kim 2597b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 259804d47e67SChao Yu nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - 259904d47e67SChao Yu F2FS_RESERVED_NODE_NUM; 2600b8559dc2SChao Yu nm_i->nid_cnt[FREE_NID_LIST] = 0; 2601b8559dc2SChao Yu nm_i->nid_cnt[ALLOC_NID_LIST] = 0; 2602e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2603cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2604ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 26052304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2606e05df3b1SJaegeuk Kim 26078a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2608b8559dc2SChao Yu INIT_LIST_HEAD(&nm_i->nid_list[FREE_NID_LIST]); 2609b8559dc2SChao Yu INIT_LIST_HEAD(&nm_i->nid_list[ALLOC_NID_LIST]); 2610769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2611769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2612e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2613e05df3b1SJaegeuk Kim 2614e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2615b8559dc2SChao Yu spin_lock_init(&nm_i->nid_list_lock); 2616b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2617e05df3b1SJaegeuk Kim 2618e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 261979b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2620e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2621e05df3b1SJaegeuk Kim if (!version_bitmap) 2622e05df3b1SJaegeuk Kim return -EFAULT; 2623e05df3b1SJaegeuk Kim 262479b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 262579b5793bSAlexandru Gheorghiu GFP_KERNEL); 262679b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 262779b5793bSAlexandru Gheorghiu return -ENOMEM; 2628599a09b2SChao Yu 262922ad0b6aSJaegeuk Kim err = __get_nat_bitmaps(sbi); 263022ad0b6aSJaegeuk Kim if (err) 263122ad0b6aSJaegeuk Kim return err; 263222ad0b6aSJaegeuk Kim 2633599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2634599a09b2SChao Yu nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, 2635599a09b2SChao Yu GFP_KERNEL); 2636599a09b2SChao Yu if (!nm_i->nat_bitmap_mir) 2637599a09b2SChao Yu return -ENOMEM; 2638599a09b2SChao Yu #endif 2639599a09b2SChao Yu 2640e05df3b1SJaegeuk Kim return 0; 2641e05df3b1SJaegeuk Kim } 2642e05df3b1SJaegeuk Kim 26439f7e4a2cSJaegeuk Kim static int init_free_nid_cache(struct f2fs_sb_info *sbi) 26444ac91242SChao Yu { 26454ac91242SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 26464ac91242SChao Yu 26474ac91242SChao Yu nm_i->free_nid_bitmap = f2fs_kvzalloc(nm_i->nat_blocks * 26484ac91242SChao Yu NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL); 26494ac91242SChao Yu if (!nm_i->free_nid_bitmap) 26504ac91242SChao Yu return -ENOMEM; 26514ac91242SChao Yu 26524ac91242SChao Yu nm_i->nat_block_bitmap = f2fs_kvzalloc(nm_i->nat_blocks / 8, 26534ac91242SChao Yu GFP_KERNEL); 26544ac91242SChao Yu if (!nm_i->nat_block_bitmap) 26554ac91242SChao Yu return -ENOMEM; 2656586d1492SChao Yu 2657586d1492SChao Yu nm_i->free_nid_count = f2fs_kvzalloc(nm_i->nat_blocks * 2658586d1492SChao Yu sizeof(unsigned short), GFP_KERNEL); 2659586d1492SChao Yu if (!nm_i->free_nid_count) 2660586d1492SChao Yu return -ENOMEM; 26614ac91242SChao Yu return 0; 26624ac91242SChao Yu } 26634ac91242SChao Yu 2664e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2665e05df3b1SJaegeuk Kim { 2666e05df3b1SJaegeuk Kim int err; 2667e05df3b1SJaegeuk Kim 2668e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2669e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2670e05df3b1SJaegeuk Kim return -ENOMEM; 2671e05df3b1SJaegeuk Kim 2672e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2673e05df3b1SJaegeuk Kim if (err) 2674e05df3b1SJaegeuk Kim return err; 2675e05df3b1SJaegeuk Kim 26764ac91242SChao Yu err = init_free_nid_cache(sbi); 26774ac91242SChao Yu if (err) 26784ac91242SChao Yu return err; 26794ac91242SChao Yu 26807041d5d2SChao Yu /* load free nid status from nat_bits table */ 26817041d5d2SChao Yu load_free_nid_bitmap(sbi); 26827041d5d2SChao Yu 268322ad0b6aSJaegeuk Kim build_free_nids(sbi, true, true); 2684e05df3b1SJaegeuk Kim return 0; 2685e05df3b1SJaegeuk Kim } 2686e05df3b1SJaegeuk Kim 2687e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2688e05df3b1SJaegeuk Kim { 2689e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2690e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2691e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 26927aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2693e05df3b1SJaegeuk Kim nid_t nid = 0; 2694e05df3b1SJaegeuk Kim unsigned int found; 2695e05df3b1SJaegeuk Kim 2696e05df3b1SJaegeuk Kim if (!nm_i) 2697e05df3b1SJaegeuk Kim return; 2698e05df3b1SJaegeuk Kim 2699e05df3b1SJaegeuk Kim /* destroy free nid list */ 2700b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2701b8559dc2SChao Yu list_for_each_entry_safe(i, next_i, &nm_i->nid_list[FREE_NID_LIST], 2702b8559dc2SChao Yu list) { 2703eb0aa4b8SJaegeuk Kim __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); 2704b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2705cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2706b8559dc2SChao Yu spin_lock(&nm_i->nid_list_lock); 2707e05df3b1SJaegeuk Kim } 2708b8559dc2SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID_LIST]); 2709b8559dc2SChao Yu f2fs_bug_on(sbi, nm_i->nid_cnt[ALLOC_NID_LIST]); 2710b8559dc2SChao Yu f2fs_bug_on(sbi, !list_empty(&nm_i->nid_list[ALLOC_NID_LIST])); 2711b8559dc2SChao Yu spin_unlock(&nm_i->nid_list_lock); 2712e05df3b1SJaegeuk Kim 2713e05df3b1SJaegeuk Kim /* destroy nat cache */ 2714b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2715e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2716e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2717e05df3b1SJaegeuk Kim unsigned idx; 27187aed0d45SJaegeuk Kim 2719b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2720b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2721b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2722e05df3b1SJaegeuk Kim } 27239850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 27247aed0d45SJaegeuk Kim 27257aed0d45SJaegeuk Kim /* destroy nat set cache */ 27267aed0d45SJaegeuk Kim nid = 0; 27277aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 27287aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 27297aed0d45SJaegeuk Kim unsigned idx; 27307aed0d45SJaegeuk Kim 27317aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 27327aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 27337aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 27347aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 27357aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 27367aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 27377aed0d45SJaegeuk Kim } 27387aed0d45SJaegeuk Kim } 2739b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2740e05df3b1SJaegeuk Kim 27414ac91242SChao Yu kvfree(nm_i->nat_block_bitmap); 27424ac91242SChao Yu kvfree(nm_i->free_nid_bitmap); 2743586d1492SChao Yu kvfree(nm_i->free_nid_count); 27444ac91242SChao Yu 2745e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 274622ad0b6aSJaegeuk Kim kfree(nm_i->nat_bits); 2747599a09b2SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 2748599a09b2SChao Yu kfree(nm_i->nat_bitmap_mir); 2749599a09b2SChao Yu #endif 2750e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2751e05df3b1SJaegeuk Kim kfree(nm_i); 2752e05df3b1SJaegeuk Kim } 2753e05df3b1SJaegeuk Kim 27546e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2755e05df3b1SJaegeuk Kim { 2756e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2757e8512d2eSGu Zheng sizeof(struct nat_entry)); 2758e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2759aec71382SChao Yu goto fail; 2760e05df3b1SJaegeuk Kim 2761e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2762e8512d2eSGu Zheng sizeof(struct free_nid)); 2763aec71382SChao Yu if (!free_nid_slab) 2764ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2765aec71382SChao Yu 2766aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2767aec71382SChao Yu sizeof(struct nat_entry_set)); 2768aec71382SChao Yu if (!nat_entry_set_slab) 2769ce3e6d25SMarkus Elfring goto destroy_free_nid; 2770e05df3b1SJaegeuk Kim return 0; 2771aec71382SChao Yu 2772ce3e6d25SMarkus Elfring destroy_free_nid: 2773aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2774ce3e6d25SMarkus Elfring destroy_nat_entry: 2775aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2776aec71382SChao Yu fail: 2777aec71382SChao Yu return -ENOMEM; 2778e05df3b1SJaegeuk Kim } 2779e05df3b1SJaegeuk Kim 2780e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2781e05df3b1SJaegeuk Kim { 2782aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2783e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2784e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2785e05df3b1SJaegeuk Kim } 2786