10a8165d7SJaegeuk Kim /* 2e05df3b1SJaegeuk Kim * fs/f2fs/node.c 3e05df3b1SJaegeuk Kim * 4e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5e05df3b1SJaegeuk Kim * http://www.samsung.com/ 6e05df3b1SJaegeuk Kim * 7e05df3b1SJaegeuk Kim * This program is free software; you can redistribute it and/or modify 8e05df3b1SJaegeuk Kim * it under the terms of the GNU General Public License version 2 as 9e05df3b1SJaegeuk Kim * published by the Free Software Foundation. 10e05df3b1SJaegeuk Kim */ 11e05df3b1SJaegeuk Kim #include <linux/fs.h> 12e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 13e05df3b1SJaegeuk Kim #include <linux/mpage.h> 14e05df3b1SJaegeuk Kim #include <linux/backing-dev.h> 15e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 16e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 17e05df3b1SJaegeuk Kim #include <linux/swap.h> 18e05df3b1SJaegeuk Kim 19e05df3b1SJaegeuk Kim #include "f2fs.h" 20e05df3b1SJaegeuk Kim #include "node.h" 21e05df3b1SJaegeuk Kim #include "segment.h" 229e4ded3fSJaegeuk Kim #include "trace.h" 2351dd6249SNamjae Jeon #include <trace/events/f2fs.h> 24e05df3b1SJaegeuk Kim 25f978f5a0SGu Zheng #define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) 26f978f5a0SGu Zheng 27e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 28e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 29aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 30e05df3b1SJaegeuk Kim 316fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 32cdfc41c1SJaegeuk Kim { 336fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 34cdfc41c1SJaegeuk Kim struct sysinfo val; 35e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 36cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 376fb03f3aSJaegeuk Kim bool res = false; 38cdfc41c1SJaegeuk Kim 39cdfc41c1SJaegeuk Kim si_meminfo(&val); 40e5e7ea3cSJaegeuk Kim 41e5e7ea3cSJaegeuk Kim /* only uses low memory */ 42e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 43e5e7ea3cSJaegeuk Kim 44429511cdSChao Yu /* 45429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 46429511cdSChao Yu */ 476fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 48e5e7ea3cSJaegeuk Kim mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 4909cbfeafSKirill A. Shutemov PAGE_SHIFT; 50e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 516fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 52e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 5309cbfeafSKirill A. Shutemov PAGE_SHIFT; 54e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 55a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 56a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 57a1257023SJaegeuk Kim return false; 58a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 59a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 60e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 61e5e7ea3cSJaegeuk Kim int i; 62e5e7ea3cSJaegeuk Kim 63e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6467298804SChao Yu mem_size += (sbi->im[i].ino_num * 6509cbfeafSKirill A. Shutemov sizeof(struct ino_entry)) >> PAGE_SHIFT; 66e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 67429511cdSChao Yu } else if (type == EXTENT_CACHE) { 687441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 697441ccefSJaegeuk Kim sizeof(struct extent_tree) + 70429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 7109cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 72429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 731e84371fSJaegeuk Kim } else { 741663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 751663cae4SJaegeuk Kim return true; 766fb03f3aSJaegeuk Kim } 776fb03f3aSJaegeuk Kim return res; 78cdfc41c1SJaegeuk Kim } 79cdfc41c1SJaegeuk Kim 80e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 81e05df3b1SJaegeuk Kim { 82e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 83e05df3b1SJaegeuk Kim unsigned int long flags; 84e05df3b1SJaegeuk Kim 85e05df3b1SJaegeuk Kim if (PageDirty(page)) { 86e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 87e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 88e05df3b1SJaegeuk Kim page_index(page), 89e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 90e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 91e05df3b1SJaegeuk Kim 92e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 934081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 94e05df3b1SJaegeuk Kim } 95e05df3b1SJaegeuk Kim ClearPageUptodate(page); 96e05df3b1SJaegeuk Kim } 97e05df3b1SJaegeuk Kim 98e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 99e05df3b1SJaegeuk Kim { 100e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 101e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 102e05df3b1SJaegeuk Kim } 103e05df3b1SJaegeuk Kim 104e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 105e05df3b1SJaegeuk Kim { 106e05df3b1SJaegeuk Kim struct page *src_page; 107e05df3b1SJaegeuk Kim struct page *dst_page; 108e05df3b1SJaegeuk Kim pgoff_t src_off; 109e05df3b1SJaegeuk Kim pgoff_t dst_off; 110e05df3b1SJaegeuk Kim void *src_addr; 111e05df3b1SJaegeuk Kim void *dst_addr; 112e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 113e05df3b1SJaegeuk Kim 114e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 115e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 116e05df3b1SJaegeuk Kim 117e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 118e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 119e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 121e05df3b1SJaegeuk Kim 122e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 123e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 12409cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 125e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 126e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 127e05df3b1SJaegeuk Kim 128e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim return dst_page; 131e05df3b1SJaegeuk Kim } 132e05df3b1SJaegeuk Kim 133e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 134e05df3b1SJaegeuk Kim { 135e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 136e05df3b1SJaegeuk Kim } 137e05df3b1SJaegeuk Kim 138e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 139e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 140e05df3b1SJaegeuk Kim { 141e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 142e05df3b1SJaegeuk Kim } 143e05df3b1SJaegeuk Kim 144e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 145e05df3b1SJaegeuk Kim { 146e05df3b1SJaegeuk Kim list_del(&e->list); 147e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 148e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 149e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 150e05df3b1SJaegeuk Kim } 151e05df3b1SJaegeuk Kim 152309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 153309cc2b6SJaegeuk Kim struct nat_entry *ne) 154309cc2b6SJaegeuk Kim { 155309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 156309cc2b6SJaegeuk Kim struct nat_entry_set *head; 157309cc2b6SJaegeuk Kim 158309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 159309cc2b6SJaegeuk Kim return; 1609be32d72SJaegeuk Kim 161309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 162309cc2b6SJaegeuk Kim if (!head) { 16380c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 164309cc2b6SJaegeuk Kim 165309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 166309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 167309cc2b6SJaegeuk Kim head->set = set; 168309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1699be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 170309cc2b6SJaegeuk Kim } 171309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 172309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 173309cc2b6SJaegeuk Kim head->entry_cnt++; 174309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 175309cc2b6SJaegeuk Kim } 176309cc2b6SJaegeuk Kim 177309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 178309cc2b6SJaegeuk Kim struct nat_entry *ne) 179309cc2b6SJaegeuk Kim { 18020d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 181309cc2b6SJaegeuk Kim struct nat_entry_set *head; 182309cc2b6SJaegeuk Kim 183309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 184309cc2b6SJaegeuk Kim if (head) { 185309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 186309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 187309cc2b6SJaegeuk Kim head->entry_cnt--; 188309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 189309cc2b6SJaegeuk Kim } 190309cc2b6SJaegeuk Kim } 191309cc2b6SJaegeuk Kim 192309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 193309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 194309cc2b6SJaegeuk Kim { 195309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 196309cc2b6SJaegeuk Kim start, nr); 197309cc2b6SJaegeuk Kim } 198309cc2b6SJaegeuk Kim 1992dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2002dcf51abSJaegeuk Kim { 2012dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2022dcf51abSJaegeuk Kim struct nat_entry *e; 2032dcf51abSJaegeuk Kim bool need = false; 2042dcf51abSJaegeuk Kim 2052dcf51abSJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2062dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2072dcf51abSJaegeuk Kim if (e) { 2082dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2092dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2102dcf51abSJaegeuk Kim need = true; 2112dcf51abSJaegeuk Kim } 2122dcf51abSJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2132dcf51abSJaegeuk Kim return need; 2142dcf51abSJaegeuk Kim } 2152dcf51abSJaegeuk Kim 21688bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 217e05df3b1SJaegeuk Kim { 218e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 219e05df3b1SJaegeuk Kim struct nat_entry *e; 22088bd02c9SJaegeuk Kim bool is_cp = true; 221e05df3b1SJaegeuk Kim 2228b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 223e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2247ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22588bd02c9SJaegeuk Kim is_cp = false; 2268b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 227e05df3b1SJaegeuk Kim return is_cp; 228e05df3b1SJaegeuk Kim } 229e05df3b1SJaegeuk Kim 23088bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 231b6fe5873SJaegeuk Kim { 232b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 233b6fe5873SJaegeuk Kim struct nat_entry *e; 23488bd02c9SJaegeuk Kim bool need_update = true; 235b6fe5873SJaegeuk Kim 2368b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23788bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 23888bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 23988bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24088bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24188bd02c9SJaegeuk Kim need_update = false; 2428b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24388bd02c9SJaegeuk Kim return need_update; 244b6fe5873SJaegeuk Kim } 245b6fe5873SJaegeuk Kim 246e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 247e05df3b1SJaegeuk Kim { 248e05df3b1SJaegeuk Kim struct nat_entry *new; 249e05df3b1SJaegeuk Kim 25080c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2519be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 252e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 253e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25488bd02c9SJaegeuk Kim nat_reset_flag(new); 255e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 256e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 257e05df3b1SJaegeuk Kim return new; 258e05df3b1SJaegeuk Kim } 259e05df3b1SJaegeuk Kim 2601515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 261e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 262e05df3b1SJaegeuk Kim { 2631515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 264e05df3b1SJaegeuk Kim struct nat_entry *e; 2659be32d72SJaegeuk Kim 266e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 267e05df3b1SJaegeuk Kim if (!e) { 268e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 26994dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 2701515aef0SChao Yu } else { 2711515aef0SChao Yu f2fs_bug_on(sbi, nat_get_ino(e) != ne->ino || 2721515aef0SChao Yu nat_get_blkaddr(e) != ne->block_addr || 2731515aef0SChao Yu nat_get_version(e) != ne->version); 274e05df3b1SJaegeuk Kim } 275e05df3b1SJaegeuk Kim } 276e05df3b1SJaegeuk Kim 277e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 278479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 279e05df3b1SJaegeuk Kim { 280e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 281e05df3b1SJaegeuk Kim struct nat_entry *e; 2829be32d72SJaegeuk Kim 2838b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 284e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 285e05df3b1SJaegeuk Kim if (!e) { 286e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2875c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2889850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 289e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 290e05df3b1SJaegeuk Kim /* 291e05df3b1SJaegeuk Kim * when nid is reallocated, 292e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 293e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 294e05df3b1SJaegeuk Kim */ 2955c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2969850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 297e05df3b1SJaegeuk Kim } 298e05df3b1SJaegeuk Kim 299e05df3b1SJaegeuk Kim /* sanity check */ 3009850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3019850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 302e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3039850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 304e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3059850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 306e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 307e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 308e05df3b1SJaegeuk Kim 309e1c42045Sarter97 /* increment version no as node is removed */ 310e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 311e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 312e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 31326834466SJaegeuk Kim 31426834466SJaegeuk Kim /* in order to reuse the nid */ 31526834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 31626834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 317e05df3b1SJaegeuk Kim } 318e05df3b1SJaegeuk Kim 319e05df3b1SJaegeuk Kim /* change address */ 320e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 32188bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 32288bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 323e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 324479f40c4SJaegeuk Kim 325479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 326d5b692b7SChao Yu if (ni->nid != ni->ino) 327479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 32888bd02c9SJaegeuk Kim if (e) { 32988bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 33088bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 33188bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 33288bd02c9SJaegeuk Kim } 3338b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 334e05df3b1SJaegeuk Kim } 335e05df3b1SJaegeuk Kim 3364660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 337e05df3b1SJaegeuk Kim { 338e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3391b38dc8eSJaegeuk Kim int nr = nr_shrink; 340e05df3b1SJaegeuk Kim 3411b38dc8eSJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 342e05df3b1SJaegeuk Kim return 0; 343e05df3b1SJaegeuk Kim 344e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 345e05df3b1SJaegeuk Kim struct nat_entry *ne; 346e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 347e05df3b1SJaegeuk Kim struct nat_entry, list); 348e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 349e05df3b1SJaegeuk Kim nr_shrink--; 350e05df3b1SJaegeuk Kim } 3518b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3521b38dc8eSJaegeuk Kim return nr - nr_shrink; 353e05df3b1SJaegeuk Kim } 354e05df3b1SJaegeuk Kim 3550a8165d7SJaegeuk Kim /* 356e1c42045Sarter97 * This function always returns success 357e05df3b1SJaegeuk Kim */ 358e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 359e05df3b1SJaegeuk Kim { 360e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 361e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 362b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 363e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 364e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 365e05df3b1SJaegeuk Kim struct page *page = NULL; 366e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 367e05df3b1SJaegeuk Kim struct nat_entry *e; 368e05df3b1SJaegeuk Kim int i; 369e05df3b1SJaegeuk Kim 370e05df3b1SJaegeuk Kim ni->nid = nid; 371e05df3b1SJaegeuk Kim 372e05df3b1SJaegeuk Kim /* Check nat cache */ 3738b26ef98SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 374e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 375e05df3b1SJaegeuk Kim if (e) { 376e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 377e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 378e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 3798b26ef98SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 380e05df3b1SJaegeuk Kim return; 3811515aef0SChao Yu } 382e05df3b1SJaegeuk Kim 3833547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3843547ea96SJaegeuk Kim 385e05df3b1SJaegeuk Kim /* Check current segment summary */ 386b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 387dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 388e05df3b1SJaegeuk Kim if (i >= 0) { 389dfc08a12SChao Yu ne = nat_in_journal(journal, i); 390e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 391e05df3b1SJaegeuk Kim } 392b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 393e05df3b1SJaegeuk Kim if (i >= 0) 394e05df3b1SJaegeuk Kim goto cache; 395e05df3b1SJaegeuk Kim 396e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 397e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 398e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 399e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 400e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 401e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 402e05df3b1SJaegeuk Kim cache: 4031515aef0SChao Yu up_read(&nm_i->nat_tree_lock); 404e05df3b1SJaegeuk Kim /* cache nat entry */ 4051515aef0SChao Yu down_write(&nm_i->nat_tree_lock); 4061515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 407a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 408e05df3b1SJaegeuk Kim } 409e05df3b1SJaegeuk Kim 41079344efbSJaegeuk Kim /* 41179344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 41279344efbSJaegeuk Kim */ 41379344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 41479344efbSJaegeuk Kim { 41579344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 41679344efbSJaegeuk Kim struct blk_plug plug; 41779344efbSJaegeuk Kim int i, end; 41879344efbSJaegeuk Kim nid_t nid; 41979344efbSJaegeuk Kim 42079344efbSJaegeuk Kim blk_start_plug(&plug); 42179344efbSJaegeuk Kim 42279344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 42379344efbSJaegeuk Kim end = start + n; 42479344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 42579344efbSJaegeuk Kim for (i = start; i < end; i++) { 42679344efbSJaegeuk Kim nid = get_nid(parent, i, false); 42779344efbSJaegeuk Kim ra_node_page(sbi, nid); 42879344efbSJaegeuk Kim } 42979344efbSJaegeuk Kim 43079344efbSJaegeuk Kim blk_finish_plug(&plug); 43179344efbSJaegeuk Kim } 43279344efbSJaegeuk Kim 4333cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4343cf45747SChao Yu { 4353cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4363cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4373cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4383cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4393cf45747SChao Yu int cur_level = dn->cur_level; 4403cf45747SChao Yu int max_level = dn->max_level; 4413cf45747SChao Yu pgoff_t base = 0; 4423cf45747SChao Yu 4433cf45747SChao Yu if (!dn->max_level) 4443cf45747SChao Yu return pgofs + 1; 4453cf45747SChao Yu 4463cf45747SChao Yu while (max_level-- > cur_level) 4473cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4483cf45747SChao Yu 4493cf45747SChao Yu switch (dn->max_level) { 4503cf45747SChao Yu case 3: 4513cf45747SChao Yu base += 2 * indirect_blks; 4523cf45747SChao Yu case 2: 4533cf45747SChao Yu base += 2 * direct_blks; 4543cf45747SChao Yu case 1: 4553cf45747SChao Yu base += direct_index; 4563cf45747SChao Yu break; 4573cf45747SChao Yu default: 4583cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 4593cf45747SChao Yu } 4603cf45747SChao Yu 4613cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 4623cf45747SChao Yu } 4633cf45747SChao Yu 4640a8165d7SJaegeuk Kim /* 465e05df3b1SJaegeuk Kim * The maximum depth is four. 466e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 467e05df3b1SJaegeuk Kim */ 46881ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 469de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 470e05df3b1SJaegeuk Kim { 47181ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 472e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 473e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 474e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 475e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 476e05df3b1SJaegeuk Kim int n = 0; 477e05df3b1SJaegeuk Kim int level = 0; 478e05df3b1SJaegeuk Kim 479e05df3b1SJaegeuk Kim noffset[0] = 0; 480e05df3b1SJaegeuk Kim 481e05df3b1SJaegeuk Kim if (block < direct_index) { 48225c0a6e5SNamjae Jeon offset[n] = block; 483e05df3b1SJaegeuk Kim goto got; 484e05df3b1SJaegeuk Kim } 485e05df3b1SJaegeuk Kim block -= direct_index; 486e05df3b1SJaegeuk Kim if (block < direct_blks) { 487e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 488e05df3b1SJaegeuk Kim noffset[n] = 1; 48925c0a6e5SNamjae Jeon offset[n] = block; 490e05df3b1SJaegeuk Kim level = 1; 491e05df3b1SJaegeuk Kim goto got; 492e05df3b1SJaegeuk Kim } 493e05df3b1SJaegeuk Kim block -= direct_blks; 494e05df3b1SJaegeuk Kim if (block < direct_blks) { 495e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 496e05df3b1SJaegeuk Kim noffset[n] = 2; 49725c0a6e5SNamjae Jeon offset[n] = block; 498e05df3b1SJaegeuk Kim level = 1; 499e05df3b1SJaegeuk Kim goto got; 500e05df3b1SJaegeuk Kim } 501e05df3b1SJaegeuk Kim block -= direct_blks; 502e05df3b1SJaegeuk Kim if (block < indirect_blks) { 503e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 504e05df3b1SJaegeuk Kim noffset[n] = 3; 505e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 506e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 50725c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 508e05df3b1SJaegeuk Kim level = 2; 509e05df3b1SJaegeuk Kim goto got; 510e05df3b1SJaegeuk Kim } 511e05df3b1SJaegeuk Kim block -= indirect_blks; 512e05df3b1SJaegeuk Kim if (block < indirect_blks) { 513e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 514e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 515e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 516e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 51725c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 518e05df3b1SJaegeuk Kim level = 2; 519e05df3b1SJaegeuk Kim goto got; 520e05df3b1SJaegeuk Kim } 521e05df3b1SJaegeuk Kim block -= indirect_blks; 522e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 523e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 524e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 525e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 526e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 527e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 528e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 529e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 530e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 531e05df3b1SJaegeuk Kim offset[n - 1]; 53225c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 533e05df3b1SJaegeuk Kim level = 3; 534e05df3b1SJaegeuk Kim goto got; 535e05df3b1SJaegeuk Kim } else { 536e05df3b1SJaegeuk Kim BUG(); 537e05df3b1SJaegeuk Kim } 538e05df3b1SJaegeuk Kim got: 539e05df3b1SJaegeuk Kim return level; 540e05df3b1SJaegeuk Kim } 541e05df3b1SJaegeuk Kim 542e05df3b1SJaegeuk Kim /* 543e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5444f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5454f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 54639936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 547e05df3b1SJaegeuk Kim */ 548266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 549e05df3b1SJaegeuk Kim { 5504081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 551e05df3b1SJaegeuk Kim struct page *npage[4]; 552f1a3b98eSJaegeuk Kim struct page *parent = NULL; 553e05df3b1SJaegeuk Kim int offset[4]; 554e05df3b1SJaegeuk Kim unsigned int noffset[4]; 555e05df3b1SJaegeuk Kim nid_t nids[4]; 5563cf45747SChao Yu int level, i = 0; 557e05df3b1SJaegeuk Kim int err = 0; 558e05df3b1SJaegeuk Kim 55981ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 560e05df3b1SJaegeuk Kim 561e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5621646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5631646cfacSJaegeuk Kim 5641646cfacSJaegeuk Kim if (!npage[0]) { 565e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 566e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 567e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5681646cfacSJaegeuk Kim } 569f1a3b98eSJaegeuk Kim 570f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 571f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 57276629165SJaegeuk Kim err = -ENOENT; 573f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 574f1a3b98eSJaegeuk Kim goto release_out; 575f1a3b98eSJaegeuk Kim } 576f1a3b98eSJaegeuk Kim 577e05df3b1SJaegeuk Kim parent = npage[0]; 57852c2db3fSChangman Lee if (level != 0) 579e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 580e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 581e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 582e05df3b1SJaegeuk Kim 583e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 584e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 585e05df3b1SJaegeuk Kim bool done = false; 586e05df3b1SJaegeuk Kim 587266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 588e05df3b1SJaegeuk Kim /* alloc new node */ 589e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 590e05df3b1SJaegeuk Kim err = -ENOSPC; 591e05df3b1SJaegeuk Kim goto release_pages; 592e05df3b1SJaegeuk Kim } 593e05df3b1SJaegeuk Kim 594e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5958ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 596e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 597e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 598e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 599e05df3b1SJaegeuk Kim goto release_pages; 600e05df3b1SJaegeuk Kim } 601e05df3b1SJaegeuk Kim 602e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 603e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 604e05df3b1SJaegeuk Kim done = true; 605266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 606e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 607e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 608e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 609e05df3b1SJaegeuk Kim goto release_pages; 610e05df3b1SJaegeuk Kim } 611e05df3b1SJaegeuk Kim done = true; 612e05df3b1SJaegeuk Kim } 613e05df3b1SJaegeuk Kim if (i == 1) { 614e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 615e05df3b1SJaegeuk Kim unlock_page(parent); 616e05df3b1SJaegeuk Kim } else { 617e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 618e05df3b1SJaegeuk Kim } 619e05df3b1SJaegeuk Kim 620e05df3b1SJaegeuk Kim if (!done) { 621e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 622e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 623e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 624e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 625e05df3b1SJaegeuk Kim goto release_out; 626e05df3b1SJaegeuk Kim } 627e05df3b1SJaegeuk Kim } 628e05df3b1SJaegeuk Kim if (i < level) { 629e05df3b1SJaegeuk Kim parent = npage[i]; 630e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 631e05df3b1SJaegeuk Kim } 632e05df3b1SJaegeuk Kim } 633e05df3b1SJaegeuk Kim dn->nid = nids[level]; 634e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 635e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 636e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 637e05df3b1SJaegeuk Kim return 0; 638e05df3b1SJaegeuk Kim 639e05df3b1SJaegeuk Kim release_pages: 640e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 641e05df3b1SJaegeuk Kim if (i > 1) 642e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 643e05df3b1SJaegeuk Kim release_out: 644e05df3b1SJaegeuk Kim dn->inode_page = NULL; 645e05df3b1SJaegeuk Kim dn->node_page = NULL; 6463cf45747SChao Yu if (err == -ENOENT) { 6473cf45747SChao Yu dn->cur_level = i; 6483cf45747SChao Yu dn->max_level = level; 6493cf45747SChao Yu } 650e05df3b1SJaegeuk Kim return err; 651e05df3b1SJaegeuk Kim } 652e05df3b1SJaegeuk Kim 653e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 654e05df3b1SJaegeuk Kim { 6554081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 656e05df3b1SJaegeuk Kim struct node_info ni; 657e05df3b1SJaegeuk Kim 658e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 65971e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 6609850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 66171e9fec5SJaegeuk Kim goto invalidate; 66271e9fec5SJaegeuk Kim } 6639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 664e05df3b1SJaegeuk Kim 665e05df3b1SJaegeuk Kim /* Deallocate node address */ 66671e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 667ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 668479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 669e05df3b1SJaegeuk Kim 670e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 671e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 672e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 6730f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 674e05df3b1SJaegeuk Kim } else { 675e05df3b1SJaegeuk Kim sync_inode_page(dn); 676e05df3b1SJaegeuk Kim } 67771e9fec5SJaegeuk Kim invalidate: 678e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 679caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 680e05df3b1SJaegeuk Kim 681e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 682bf39c00aSJaegeuk Kim 683bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 684bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 685bf39c00aSJaegeuk Kim 686e05df3b1SJaegeuk Kim dn->node_page = NULL; 68751dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 688e05df3b1SJaegeuk Kim } 689e05df3b1SJaegeuk Kim 690e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 691e05df3b1SJaegeuk Kim { 692e05df3b1SJaegeuk Kim struct page *page; 693e05df3b1SJaegeuk Kim 694e05df3b1SJaegeuk Kim if (dn->nid == 0) 695e05df3b1SJaegeuk Kim return 1; 696e05df3b1SJaegeuk Kim 697e05df3b1SJaegeuk Kim /* get direct node */ 6984081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 699e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 700e05df3b1SJaegeuk Kim return 1; 701e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 702e05df3b1SJaegeuk Kim return PTR_ERR(page); 703e05df3b1SJaegeuk Kim 704e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 705e05df3b1SJaegeuk Kim dn->node_page = page; 706e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 707e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 708e05df3b1SJaegeuk Kim truncate_node(dn); 709e05df3b1SJaegeuk Kim return 1; 710e05df3b1SJaegeuk Kim } 711e05df3b1SJaegeuk Kim 712e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 713e05df3b1SJaegeuk Kim int ofs, int depth) 714e05df3b1SJaegeuk Kim { 715e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 716e05df3b1SJaegeuk Kim struct page *page; 717e05df3b1SJaegeuk Kim struct f2fs_node *rn; 718e05df3b1SJaegeuk Kim nid_t child_nid; 719e05df3b1SJaegeuk Kim unsigned int child_nofs; 720e05df3b1SJaegeuk Kim int freed = 0; 721e05df3b1SJaegeuk Kim int i, ret; 722e05df3b1SJaegeuk Kim 723e05df3b1SJaegeuk Kim if (dn->nid == 0) 724e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 725e05df3b1SJaegeuk Kim 72651dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 72751dd6249SNamjae Jeon 7284081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 72951dd6249SNamjae Jeon if (IS_ERR(page)) { 73051dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 731e05df3b1SJaegeuk Kim return PTR_ERR(page); 73251dd6249SNamjae Jeon } 733e05df3b1SJaegeuk Kim 73479344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 73579344efbSJaegeuk Kim 73645590710SGu Zheng rn = F2FS_NODE(page); 737e05df3b1SJaegeuk Kim if (depth < 3) { 738e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 739e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 740e05df3b1SJaegeuk Kim if (child_nid == 0) 741e05df3b1SJaegeuk Kim continue; 742e05df3b1SJaegeuk Kim rdn.nid = child_nid; 743e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 744e05df3b1SJaegeuk Kim if (ret < 0) 745e05df3b1SJaegeuk Kim goto out_err; 74612719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 74793bae099SJaegeuk Kim dn->node_changed = true; 748e05df3b1SJaegeuk Kim } 749e05df3b1SJaegeuk Kim } else { 750e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 751e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 752e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 753e05df3b1SJaegeuk Kim if (child_nid == 0) { 754e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 755e05df3b1SJaegeuk Kim continue; 756e05df3b1SJaegeuk Kim } 757e05df3b1SJaegeuk Kim rdn.nid = child_nid; 758e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 759e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 76012719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 76193bae099SJaegeuk Kim dn->node_changed = true; 762e05df3b1SJaegeuk Kim child_nofs += ret; 763e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 764e05df3b1SJaegeuk Kim goto out_err; 765e05df3b1SJaegeuk Kim } 766e05df3b1SJaegeuk Kim } 767e05df3b1SJaegeuk Kim freed = child_nofs; 768e05df3b1SJaegeuk Kim } 769e05df3b1SJaegeuk Kim 770e05df3b1SJaegeuk Kim if (!ofs) { 771e05df3b1SJaegeuk Kim /* remove current indirect node */ 772e05df3b1SJaegeuk Kim dn->node_page = page; 773e05df3b1SJaegeuk Kim truncate_node(dn); 774e05df3b1SJaegeuk Kim freed++; 775e05df3b1SJaegeuk Kim } else { 776e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 777e05df3b1SJaegeuk Kim } 77851dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 779e05df3b1SJaegeuk Kim return freed; 780e05df3b1SJaegeuk Kim 781e05df3b1SJaegeuk Kim out_err: 782e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 78351dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 784e05df3b1SJaegeuk Kim return ret; 785e05df3b1SJaegeuk Kim } 786e05df3b1SJaegeuk Kim 787e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 788e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 789e05df3b1SJaegeuk Kim { 790e05df3b1SJaegeuk Kim struct page *pages[2]; 791e05df3b1SJaegeuk Kim nid_t nid[3]; 792e05df3b1SJaegeuk Kim nid_t child_nid; 793e05df3b1SJaegeuk Kim int err = 0; 794e05df3b1SJaegeuk Kim int i; 795e05df3b1SJaegeuk Kim int idx = depth - 2; 796e05df3b1SJaegeuk Kim 797e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 798e05df3b1SJaegeuk Kim if (!nid[0]) 799e05df3b1SJaegeuk Kim return 0; 800e05df3b1SJaegeuk Kim 801e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 802a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 803e1c42045Sarter97 /* reference count'll be increased */ 8044081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 805e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 806e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 807a225dca3Sshifei10.ge idx = i - 1; 808e05df3b1SJaegeuk Kim goto fail; 809e05df3b1SJaegeuk Kim } 810e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 811e05df3b1SJaegeuk Kim } 812e05df3b1SJaegeuk Kim 81379344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 81479344efbSJaegeuk Kim 815e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 816a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 817e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 818e05df3b1SJaegeuk Kim if (!child_nid) 819e05df3b1SJaegeuk Kim continue; 820e05df3b1SJaegeuk Kim dn->nid = child_nid; 821e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 822e05df3b1SJaegeuk Kim if (err < 0) 823e05df3b1SJaegeuk Kim goto fail; 82412719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 82593bae099SJaegeuk Kim dn->node_changed = true; 826e05df3b1SJaegeuk Kim } 827e05df3b1SJaegeuk Kim 828a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 829e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 830e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 831e05df3b1SJaegeuk Kim truncate_node(dn); 832e05df3b1SJaegeuk Kim } else { 833e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 834e05df3b1SJaegeuk Kim } 835e05df3b1SJaegeuk Kim offset[idx]++; 836a225dca3Sshifei10.ge offset[idx + 1] = 0; 837a225dca3Sshifei10.ge idx--; 838e05df3b1SJaegeuk Kim fail: 839a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 840e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 84151dd6249SNamjae Jeon 84251dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 84351dd6249SNamjae Jeon 844e05df3b1SJaegeuk Kim return err; 845e05df3b1SJaegeuk Kim } 846e05df3b1SJaegeuk Kim 8470a8165d7SJaegeuk Kim /* 848e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 849e05df3b1SJaegeuk Kim */ 850e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 851e05df3b1SJaegeuk Kim { 8524081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 853e05df3b1SJaegeuk Kim int err = 0, cont = 1; 854e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8557dd690c8SJaegeuk Kim unsigned int nofs = 0; 85658bfaf44SJaegeuk Kim struct f2fs_inode *ri; 857e05df3b1SJaegeuk Kim struct dnode_of_data dn; 858e05df3b1SJaegeuk Kim struct page *page; 859e05df3b1SJaegeuk Kim 86051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 86151dd6249SNamjae Jeon 86281ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 863ff373558SJaegeuk Kim 864e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 86551dd6249SNamjae Jeon if (IS_ERR(page)) { 86651dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 867e05df3b1SJaegeuk Kim return PTR_ERR(page); 86851dd6249SNamjae Jeon } 869e05df3b1SJaegeuk Kim 870e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 871e05df3b1SJaegeuk Kim unlock_page(page); 872e05df3b1SJaegeuk Kim 87358bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 874e05df3b1SJaegeuk Kim switch (level) { 875e05df3b1SJaegeuk Kim case 0: 876e05df3b1SJaegeuk Kim case 1: 877e05df3b1SJaegeuk Kim nofs = noffset[1]; 878e05df3b1SJaegeuk Kim break; 879e05df3b1SJaegeuk Kim case 2: 880e05df3b1SJaegeuk Kim nofs = noffset[1]; 881e05df3b1SJaegeuk Kim if (!offset[level - 1]) 882e05df3b1SJaegeuk Kim goto skip_partial; 88358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 884e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 885e05df3b1SJaegeuk Kim goto fail; 886e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 887e05df3b1SJaegeuk Kim break; 888e05df3b1SJaegeuk Kim case 3: 889e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 890e05df3b1SJaegeuk Kim if (!offset[level - 1]) 891e05df3b1SJaegeuk Kim goto skip_partial; 89258bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 893e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 894e05df3b1SJaegeuk Kim goto fail; 895e05df3b1SJaegeuk Kim break; 896e05df3b1SJaegeuk Kim default: 897e05df3b1SJaegeuk Kim BUG(); 898e05df3b1SJaegeuk Kim } 899e05df3b1SJaegeuk Kim 900e05df3b1SJaegeuk Kim skip_partial: 901e05df3b1SJaegeuk Kim while (cont) { 90258bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 903e05df3b1SJaegeuk Kim switch (offset[0]) { 904e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 905e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 906e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 907e05df3b1SJaegeuk Kim break; 908e05df3b1SJaegeuk Kim 909e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 910e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 911e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 912e05df3b1SJaegeuk Kim break; 913e05df3b1SJaegeuk Kim 914e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 915e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 916e05df3b1SJaegeuk Kim cont = 0; 917e05df3b1SJaegeuk Kim break; 918e05df3b1SJaegeuk Kim 919e05df3b1SJaegeuk Kim default: 920e05df3b1SJaegeuk Kim BUG(); 921e05df3b1SJaegeuk Kim } 922e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 923e05df3b1SJaegeuk Kim goto fail; 924e05df3b1SJaegeuk Kim if (offset[1] == 0 && 92558bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 926e05df3b1SJaegeuk Kim lock_page(page); 927ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 928fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 92958bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 930e05df3b1SJaegeuk Kim set_page_dirty(page); 931e05df3b1SJaegeuk Kim unlock_page(page); 932e05df3b1SJaegeuk Kim } 933e05df3b1SJaegeuk Kim offset[1] = 0; 934e05df3b1SJaegeuk Kim offset[0]++; 935e05df3b1SJaegeuk Kim nofs += err; 936e05df3b1SJaegeuk Kim } 937e05df3b1SJaegeuk Kim fail: 938e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 93951dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 940e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 941e05df3b1SJaegeuk Kim } 942e05df3b1SJaegeuk Kim 9434f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 9444f16fb0fSJaegeuk Kim { 9454081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9464f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9474f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9484f16fb0fSJaegeuk Kim struct page *npage; 9494f16fb0fSJaegeuk Kim 9504f16fb0fSJaegeuk Kim if (!nid) 9514f16fb0fSJaegeuk Kim return 0; 9524f16fb0fSJaegeuk Kim 9534f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9544f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9554f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9564f16fb0fSJaegeuk Kim 957205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 95865985d93SJaegeuk Kim 95965985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 96065985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 96165985d93SJaegeuk Kim 9624f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 9634f16fb0fSJaegeuk Kim 9644f16fb0fSJaegeuk Kim if (page) 96501d2d1aaSChao Yu dn.inode_page_locked = true; 9664f16fb0fSJaegeuk Kim truncate_node(&dn); 9674f16fb0fSJaegeuk Kim return 0; 9684f16fb0fSJaegeuk Kim } 9694f16fb0fSJaegeuk Kim 97039936837SJaegeuk Kim /* 9714f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9724f4124d0SChao Yu * f2fs_unlock_op(). 97339936837SJaegeuk Kim */ 97413ec7297SChao Yu int remove_inode_page(struct inode *inode) 975e05df3b1SJaegeuk Kim { 976e05df3b1SJaegeuk Kim struct dnode_of_data dn; 97713ec7297SChao Yu int err; 978e05df3b1SJaegeuk Kim 979c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 98013ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 98113ec7297SChao Yu if (err) 98213ec7297SChao Yu return err; 983e05df3b1SJaegeuk Kim 98413ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 98513ec7297SChao Yu if (err) { 986c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 98713ec7297SChao Yu return err; 988e05df3b1SJaegeuk Kim } 989c2e69583SJaegeuk Kim 990c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 991c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 992c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 993c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 994c2e69583SJaegeuk Kim 995e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9969850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9979850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 998c2e69583SJaegeuk Kim 999c2e69583SJaegeuk Kim /* will put inode & node pages */ 1000e05df3b1SJaegeuk Kim truncate_node(&dn); 100113ec7297SChao Yu return 0; 1002e05df3b1SJaegeuk Kim } 1003e05df3b1SJaegeuk Kim 1004a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1005e05df3b1SJaegeuk Kim { 1006e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1007e05df3b1SJaegeuk Kim 1008e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1009e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 101044a83ff6SJaegeuk Kim 101144a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10128ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 1013e05df3b1SJaegeuk Kim } 1014e05df3b1SJaegeuk Kim 10158ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 10168ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 1017e05df3b1SJaegeuk Kim { 10184081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 1019e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1020e05df3b1SJaegeuk Kim struct page *page; 1021e05df3b1SJaegeuk Kim int err; 1022e05df3b1SJaegeuk Kim 102391942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1024e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1025e05df3b1SJaegeuk Kim 1026300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1027e05df3b1SJaegeuk Kim if (!page) 1028e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1029e05df3b1SJaegeuk Kim 10306bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 10319c02740cSJaegeuk Kim err = -ENOSPC; 10329c02740cSJaegeuk Kim goto fail; 10339c02740cSJaegeuk Kim } 1034e05df3b1SJaegeuk Kim 10359c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 1036e05df3b1SJaegeuk Kim 1037e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 10389850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 1039e05df3b1SJaegeuk Kim new_ni = old_ni; 1040e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 1041479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10429c02740cSJaegeuk Kim 1043fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10449c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1045398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 10469c02740cSJaegeuk Kim SetPageUptodate(page); 104712719ae1SJaegeuk Kim if (set_page_dirty(page)) 104812719ae1SJaegeuk Kim dn->node_changed = true; 1049e05df3b1SJaegeuk Kim 10504bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1051205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1052479bd73aSJaegeuk Kim 1053e05df3b1SJaegeuk Kim dn->node_page = page; 10548ae8f162SJaegeuk Kim if (ipage) 10558ae8f162SJaegeuk Kim update_inode(dn->inode, ipage); 10568ae8f162SJaegeuk Kim else 1057e05df3b1SJaegeuk Kim sync_inode_page(dn); 1058e05df3b1SJaegeuk Kim if (ofs == 0) 1059e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1060e05df3b1SJaegeuk Kim 1061e05df3b1SJaegeuk Kim return page; 1062e05df3b1SJaegeuk Kim 1063e05df3b1SJaegeuk Kim fail: 106471e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1065e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1066e05df3b1SJaegeuk Kim return ERR_PTR(err); 1067e05df3b1SJaegeuk Kim } 1068e05df3b1SJaegeuk Kim 106956ae674cSJaegeuk Kim /* 107056ae674cSJaegeuk Kim * Caller should do after getting the following values. 107156ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 107286531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 107356ae674cSJaegeuk Kim */ 107493dfe2acSJaegeuk Kim static int read_node_page(struct page *page, int rw) 1075e05df3b1SJaegeuk Kim { 10764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1077e05df3b1SJaegeuk Kim struct node_info ni; 1078cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 107905ca3632SJaegeuk Kim .sbi = sbi, 1080cf04e8ebSJaegeuk Kim .type = NODE, 1081cf04e8ebSJaegeuk Kim .rw = rw, 108205ca3632SJaegeuk Kim .page = page, 10834375a336SJaegeuk Kim .encrypted_page = NULL, 1084cf04e8ebSJaegeuk Kim }; 1085e05df3b1SJaegeuk Kim 1086e05df3b1SJaegeuk Kim get_node_info(sbi, page->index, &ni); 1087e05df3b1SJaegeuk Kim 10886bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 10892bca1e23SJaegeuk Kim ClearPageUptodate(page); 1090e05df3b1SJaegeuk Kim return -ENOENT; 1091393ff91fSJaegeuk Kim } 1092393ff91fSJaegeuk Kim 109356ae674cSJaegeuk Kim if (PageUptodate(page)) 109456ae674cSJaegeuk Kim return LOCKED_PAGE; 1095393ff91fSJaegeuk Kim 10967a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 109705ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1098e05df3b1SJaegeuk Kim } 1099e05df3b1SJaegeuk Kim 11000a8165d7SJaegeuk Kim /* 1101e05df3b1SJaegeuk Kim * Readahead a node page 1102e05df3b1SJaegeuk Kim */ 1103e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1104e05df3b1SJaegeuk Kim { 1105e05df3b1SJaegeuk Kim struct page *apage; 110656ae674cSJaegeuk Kim int err; 1107e05df3b1SJaegeuk Kim 1108e8458725SChao Yu if (!nid) 1109e8458725SChao Yu return; 1110e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1111e8458725SChao Yu 1112999270deSFan Li rcu_read_lock(); 1113999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1114999270deSFan Li rcu_read_unlock(); 1115999270deSFan Li if (apage) 1116393ff91fSJaegeuk Kim return; 1117e05df3b1SJaegeuk Kim 1118300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1119e05df3b1SJaegeuk Kim if (!apage) 1120e05df3b1SJaegeuk Kim return; 1121e05df3b1SJaegeuk Kim 112256ae674cSJaegeuk Kim err = read_node_page(apage, READA); 112386531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1124e05df3b1SJaegeuk Kim } 1125e05df3b1SJaegeuk Kim 112617a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11270e022ea8SChao Yu struct page *parent, int start) 1128e05df3b1SJaegeuk Kim { 112956ae674cSJaegeuk Kim struct page *page; 113056ae674cSJaegeuk Kim int err; 11314aa69d56SJaegeuk Kim 11324aa69d56SJaegeuk Kim if (!nid) 11334aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11344aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1135afcb7ca0SJaegeuk Kim repeat: 1136300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1137e05df3b1SJaegeuk Kim if (!page) 1138e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1139e05df3b1SJaegeuk Kim 1140e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 114186531d6bSJaegeuk Kim if (err < 0) { 114286531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1143e05df3b1SJaegeuk Kim return ERR_PTR(err); 1144e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 1145e1c51b9fSChao Yu goto page_hit; 114686531d6bSJaegeuk Kim } 1147aaf96075SJaegeuk Kim 11480e022ea8SChao Yu if (parent) 114979344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11500e022ea8SChao Yu 1151e1c51b9fSChao Yu lock_page(page); 1152e1c51b9fSChao Yu 1153e1c51b9fSChao Yu if (unlikely(!PageUptodate(page))) { 1154393ff91fSJaegeuk Kim f2fs_put_page(page, 1); 1155393ff91fSJaegeuk Kim return ERR_PTR(-EIO); 1156393ff91fSJaegeuk Kim } 11574ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1158afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1159afcb7ca0SJaegeuk Kim goto repeat; 1160afcb7ca0SJaegeuk Kim } 1161e1c51b9fSChao Yu page_hit: 1162e1c51b9fSChao Yu f2fs_bug_on(sbi, nid != nid_of_node(page)); 1163e05df3b1SJaegeuk Kim return page; 1164e05df3b1SJaegeuk Kim } 1165e05df3b1SJaegeuk Kim 11660e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11670e022ea8SChao Yu { 11680e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11690e022ea8SChao Yu } 11700e022ea8SChao Yu 1171e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1172e05df3b1SJaegeuk Kim { 11734081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11740e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1175e05df3b1SJaegeuk Kim 11760e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1177e05df3b1SJaegeuk Kim } 1178e05df3b1SJaegeuk Kim 1179e05df3b1SJaegeuk Kim void sync_inode_page(struct dnode_of_data *dn) 1180e05df3b1SJaegeuk Kim { 118112719ae1SJaegeuk Kim int ret = 0; 118212719ae1SJaegeuk Kim 1183e05df3b1SJaegeuk Kim if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { 118412719ae1SJaegeuk Kim ret = update_inode(dn->inode, dn->node_page); 1185e05df3b1SJaegeuk Kim } else if (dn->inode_page) { 1186e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1187e05df3b1SJaegeuk Kim lock_page(dn->inode_page); 118812719ae1SJaegeuk Kim ret = update_inode(dn->inode, dn->inode_page); 1189e05df3b1SJaegeuk Kim if (!dn->inode_page_locked) 1190e05df3b1SJaegeuk Kim unlock_page(dn->inode_page); 1191e05df3b1SJaegeuk Kim } else { 119212719ae1SJaegeuk Kim ret = update_inode_page(dn->inode); 1193e05df3b1SJaegeuk Kim } 119412719ae1SJaegeuk Kim dn->node_changed = ret ? true: false; 1195e05df3b1SJaegeuk Kim } 1196e05df3b1SJaegeuk Kim 11972049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 11982049d4fcSJaegeuk Kim { 11992049d4fcSJaegeuk Kim struct inode *inode; 12002049d4fcSJaegeuk Kim struct page *page; 12010f3311a8SChao Yu int ret; 12022049d4fcSJaegeuk Kim 12032049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 12042049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 12052049d4fcSJaegeuk Kim if (!inode) 12062049d4fcSJaegeuk Kim return; 12072049d4fcSJaegeuk Kim 12084a6de50dSJaegeuk Kim page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); 12092049d4fcSJaegeuk Kim if (!page) 12102049d4fcSJaegeuk Kim goto iput_out; 12112049d4fcSJaegeuk Kim 12122049d4fcSJaegeuk Kim if (!PageUptodate(page)) 12132049d4fcSJaegeuk Kim goto page_out; 12142049d4fcSJaegeuk Kim 12152049d4fcSJaegeuk Kim if (!PageDirty(page)) 12162049d4fcSJaegeuk Kim goto page_out; 12172049d4fcSJaegeuk Kim 12182049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12192049d4fcSJaegeuk Kim goto page_out; 12202049d4fcSJaegeuk Kim 12210f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12222049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 12230f3311a8SChao Yu if (ret) 12242049d4fcSJaegeuk Kim set_page_dirty(page); 12252049d4fcSJaegeuk Kim page_out: 12264a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12272049d4fcSJaegeuk Kim iput_out: 12282049d4fcSJaegeuk Kim iput(inode); 12292049d4fcSJaegeuk Kim } 12302049d4fcSJaegeuk Kim 1231da011cc0SChao Yu void move_node_page(struct page *node_page, int gc_type) 1232da011cc0SChao Yu { 1233da011cc0SChao Yu if (gc_type == FG_GC) { 1234da011cc0SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(node_page); 1235da011cc0SChao Yu struct writeback_control wbc = { 1236da011cc0SChao Yu .sync_mode = WB_SYNC_ALL, 1237da011cc0SChao Yu .nr_to_write = 1, 1238da011cc0SChao Yu .for_reclaim = 0, 1239da011cc0SChao Yu }; 1240da011cc0SChao Yu 1241da011cc0SChao Yu set_page_dirty(node_page); 1242da011cc0SChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true); 1243da011cc0SChao Yu 1244da011cc0SChao Yu f2fs_bug_on(sbi, PageWriteback(node_page)); 1245da011cc0SChao Yu if (!clear_page_dirty_for_io(node_page)) 1246da011cc0SChao Yu goto out_page; 1247da011cc0SChao Yu 1248da011cc0SChao Yu if (NODE_MAPPING(sbi)->a_ops->writepage(node_page, &wbc)) 1249da011cc0SChao Yu unlock_page(node_page); 1250da011cc0SChao Yu goto release_page; 1251da011cc0SChao Yu } else { 1252da011cc0SChao Yu /* set page dirty and write it */ 1253da011cc0SChao Yu if (!PageWriteback(node_page)) 1254da011cc0SChao Yu set_page_dirty(node_page); 1255da011cc0SChao Yu } 1256da011cc0SChao Yu out_page: 1257da011cc0SChao Yu unlock_page(node_page); 1258da011cc0SChao Yu release_page: 1259da011cc0SChao Yu f2fs_put_page(node_page, 0); 1260da011cc0SChao Yu } 1261da011cc0SChao Yu 1262608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1263e05df3b1SJaegeuk Kim { 1264e05df3b1SJaegeuk Kim pgoff_t index, end; 1265e05df3b1SJaegeuk Kim struct pagevec pvec; 1266608514deSJaegeuk Kim struct page *last_page = NULL; 126752681375SJaegeuk Kim 126852681375SJaegeuk Kim pagevec_init(&pvec, 0); 126952681375SJaegeuk Kim index = 0; 127052681375SJaegeuk Kim end = ULONG_MAX; 127152681375SJaegeuk Kim 127252681375SJaegeuk Kim while (index <= end) { 127352681375SJaegeuk Kim int i, nr_pages; 127452681375SJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 127552681375SJaegeuk Kim PAGECACHE_TAG_DIRTY, 127652681375SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 127752681375SJaegeuk Kim if (nr_pages == 0) 127852681375SJaegeuk Kim break; 127952681375SJaegeuk Kim 128052681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 128152681375SJaegeuk Kim struct page *page = pvec.pages[i]; 128252681375SJaegeuk Kim 128352681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1284608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 128552681375SJaegeuk Kim pagevec_release(&pvec); 1286608514deSJaegeuk Kim return ERR_PTR(-EIO); 128752681375SJaegeuk Kim } 128852681375SJaegeuk Kim 128952681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 129052681375SJaegeuk Kim continue; 129152681375SJaegeuk Kim if (ino_of_node(page) != ino) 129252681375SJaegeuk Kim continue; 129352681375SJaegeuk Kim 129452681375SJaegeuk Kim lock_page(page); 129552681375SJaegeuk Kim 129652681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 129752681375SJaegeuk Kim continue_unlock: 129852681375SJaegeuk Kim unlock_page(page); 129952681375SJaegeuk Kim continue; 130052681375SJaegeuk Kim } 130152681375SJaegeuk Kim if (ino_of_node(page) != ino) 130252681375SJaegeuk Kim goto continue_unlock; 130352681375SJaegeuk Kim 130452681375SJaegeuk Kim if (!PageDirty(page)) { 130552681375SJaegeuk Kim /* someone wrote it for us */ 130652681375SJaegeuk Kim goto continue_unlock; 130752681375SJaegeuk Kim } 130852681375SJaegeuk Kim 1309608514deSJaegeuk Kim if (last_page) 1310608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1311608514deSJaegeuk Kim 1312608514deSJaegeuk Kim get_page(page); 1313608514deSJaegeuk Kim last_page = page; 1314608514deSJaegeuk Kim unlock_page(page); 1315608514deSJaegeuk Kim } 1316608514deSJaegeuk Kim pagevec_release(&pvec); 1317608514deSJaegeuk Kim cond_resched(); 1318608514deSJaegeuk Kim } 1319608514deSJaegeuk Kim return last_page; 1320608514deSJaegeuk Kim } 1321608514deSJaegeuk Kim 1322608514deSJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 1323608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1324608514deSJaegeuk Kim { 1325608514deSJaegeuk Kim pgoff_t index, end; 1326608514deSJaegeuk Kim struct pagevec pvec; 1327608514deSJaegeuk Kim int ret = 0; 1328608514deSJaegeuk Kim struct page *last_page = NULL; 1329608514deSJaegeuk Kim bool marked = false; 1330608514deSJaegeuk Kim 1331608514deSJaegeuk Kim if (atomic) { 1332608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1333608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1334608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1335608514deSJaegeuk Kim } 1336608514deSJaegeuk Kim retry: 1337608514deSJaegeuk Kim pagevec_init(&pvec, 0); 1338608514deSJaegeuk Kim index = 0; 1339608514deSJaegeuk Kim end = ULONG_MAX; 1340608514deSJaegeuk Kim 1341608514deSJaegeuk Kim while (index <= end) { 1342608514deSJaegeuk Kim int i, nr_pages; 1343608514deSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1344608514deSJaegeuk Kim PAGECACHE_TAG_DIRTY, 1345608514deSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1346608514deSJaegeuk Kim if (nr_pages == 0) 1347608514deSJaegeuk Kim break; 1348608514deSJaegeuk Kim 1349608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1350608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1351608514deSJaegeuk Kim 1352608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1353608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1354608514deSJaegeuk Kim pagevec_release(&pvec); 1355608514deSJaegeuk Kim return -EIO; 1356608514deSJaegeuk Kim } 1357608514deSJaegeuk Kim 1358608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1359608514deSJaegeuk Kim continue; 1360608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1361608514deSJaegeuk Kim continue; 1362608514deSJaegeuk Kim 1363608514deSJaegeuk Kim lock_page(page); 1364608514deSJaegeuk Kim 1365608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1366608514deSJaegeuk Kim continue_unlock: 1367608514deSJaegeuk Kim unlock_page(page); 1368608514deSJaegeuk Kim continue; 1369608514deSJaegeuk Kim } 1370608514deSJaegeuk Kim if (ino_of_node(page) != ino) 137152681375SJaegeuk Kim goto continue_unlock; 137252681375SJaegeuk Kim 1373608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1374608514deSJaegeuk Kim /* someone wrote it for us */ 1375608514deSJaegeuk Kim goto continue_unlock; 1376608514deSJaegeuk Kim } 1377608514deSJaegeuk Kim 1378608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1379608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1380608514deSJaegeuk Kim 1381608514deSJaegeuk Kim if (!atomic || page == last_page) { 138252681375SJaegeuk Kim set_fsync_mark(page, 1); 138352681375SJaegeuk Kim if (IS_INODE(page)) 138452681375SJaegeuk Kim set_dentry_mark(page, 138552681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 1386608514deSJaegeuk Kim /* may be written by other thread */ 1387608514deSJaegeuk Kim if (!PageDirty(page)) 1388608514deSJaegeuk Kim set_page_dirty(page); 1389608514deSJaegeuk Kim } 1390608514deSJaegeuk Kim 1391608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1392608514deSJaegeuk Kim goto continue_unlock; 139352681375SJaegeuk Kim 1394c267ec15SJaegeuk Kim ret = NODE_MAPPING(sbi)->a_ops->writepage(page, wbc); 1395c267ec15SJaegeuk Kim if (ret) { 139652681375SJaegeuk Kim unlock_page(page); 1397608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1398608514deSJaegeuk Kim break; 1399608514deSJaegeuk Kim } 1400608514deSJaegeuk Kim if (page == last_page) { 1401608514deSJaegeuk Kim f2fs_put_page(page, 0); 1402608514deSJaegeuk Kim marked = true; 140352681375SJaegeuk Kim break; 140452681375SJaegeuk Kim } 1405c267ec15SJaegeuk Kim } 140652681375SJaegeuk Kim pagevec_release(&pvec); 140752681375SJaegeuk Kim cond_resched(); 140852681375SJaegeuk Kim 1409608514deSJaegeuk Kim if (ret || marked) 141052681375SJaegeuk Kim break; 141152681375SJaegeuk Kim } 1412608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1413608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1414608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1415608514deSJaegeuk Kim ino, last_page->index); 1416608514deSJaegeuk Kim lock_page(last_page); 1417608514deSJaegeuk Kim set_page_dirty(last_page); 1418608514deSJaegeuk Kim unlock_page(last_page); 1419608514deSJaegeuk Kim goto retry; 1420608514deSJaegeuk Kim } 1421c267ec15SJaegeuk Kim return ret ? -EIO: 0; 142252681375SJaegeuk Kim } 142352681375SJaegeuk Kim 142452681375SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc) 142552681375SJaegeuk Kim { 142652681375SJaegeuk Kim pgoff_t index, end; 142752681375SJaegeuk Kim struct pagevec pvec; 142852681375SJaegeuk Kim int step = 0; 142912bb0a8fSJaegeuk Kim int nwritten = 0; 1430e05df3b1SJaegeuk Kim 1431e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1432e05df3b1SJaegeuk Kim 1433e05df3b1SJaegeuk Kim next_step: 1434e05df3b1SJaegeuk Kim index = 0; 143580dd9c0eSChao Yu end = ULONG_MAX; 1436e05df3b1SJaegeuk Kim 1437e05df3b1SJaegeuk Kim while (index <= end) { 1438e05df3b1SJaegeuk Kim int i, nr_pages; 14394ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1440e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1441e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1442e05df3b1SJaegeuk Kim if (nr_pages == 0) 1443e05df3b1SJaegeuk Kim break; 1444e05df3b1SJaegeuk Kim 1445e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1446e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1447e05df3b1SJaegeuk Kim 14486d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 14496d5a1495SChao Yu pagevec_release(&pvec); 14506d5a1495SChao Yu return -EIO; 14516d5a1495SChao Yu } 14526d5a1495SChao Yu 1453e05df3b1SJaegeuk Kim /* 1454e05df3b1SJaegeuk Kim * flushing sequence with step: 1455e05df3b1SJaegeuk Kim * 0. indirect nodes 1456e05df3b1SJaegeuk Kim * 1. dentry dnodes 1457e05df3b1SJaegeuk Kim * 2. file dnodes 1458e05df3b1SJaegeuk Kim */ 1459e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1460e05df3b1SJaegeuk Kim continue; 1461e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1462e05df3b1SJaegeuk Kim is_cold_node(page))) 1463e05df3b1SJaegeuk Kim continue; 1464e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1465e05df3b1SJaegeuk Kim !is_cold_node(page))) 1466e05df3b1SJaegeuk Kim continue; 14679a4cbc9eSChao Yu lock_node: 146852681375SJaegeuk Kim if (!trylock_page(page)) 1469e05df3b1SJaegeuk Kim continue; 1470e05df3b1SJaegeuk Kim 14714ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1472e05df3b1SJaegeuk Kim continue_unlock: 1473e05df3b1SJaegeuk Kim unlock_page(page); 1474e05df3b1SJaegeuk Kim continue; 1475e05df3b1SJaegeuk Kim } 1476e05df3b1SJaegeuk Kim 1477e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1478e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1479e05df3b1SJaegeuk Kim goto continue_unlock; 1480e05df3b1SJaegeuk Kim } 1481e05df3b1SJaegeuk Kim 14822049d4fcSJaegeuk Kim /* flush inline_data */ 148352681375SJaegeuk Kim if (is_inline_node(page)) { 14842049d4fcSJaegeuk Kim clear_inline_node(page); 14852049d4fcSJaegeuk Kim unlock_page(page); 14862049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 14879a4cbc9eSChao Yu goto lock_node; 14882049d4fcSJaegeuk Kim } 14892049d4fcSJaegeuk Kim 1490fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1491fa3d2bdfSJaegeuk Kim 1492fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1493e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1494e05df3b1SJaegeuk Kim goto continue_unlock; 1495e05df3b1SJaegeuk Kim 1496e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1497e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 149852746519SJaegeuk Kim 149952746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 150052746519SJaegeuk Kim unlock_page(page); 1501e05df3b1SJaegeuk Kim 1502e05df3b1SJaegeuk Kim if (--wbc->nr_to_write == 0) 1503e05df3b1SJaegeuk Kim break; 1504e05df3b1SJaegeuk Kim } 1505e05df3b1SJaegeuk Kim pagevec_release(&pvec); 1506e05df3b1SJaegeuk Kim cond_resched(); 1507e05df3b1SJaegeuk Kim 1508e05df3b1SJaegeuk Kim if (wbc->nr_to_write == 0) { 1509e05df3b1SJaegeuk Kim step = 2; 1510e05df3b1SJaegeuk Kim break; 1511e05df3b1SJaegeuk Kim } 1512e05df3b1SJaegeuk Kim } 1513e05df3b1SJaegeuk Kim 1514e05df3b1SJaegeuk Kim if (step < 2) { 1515e05df3b1SJaegeuk Kim step++; 1516e05df3b1SJaegeuk Kim goto next_step; 1517e05df3b1SJaegeuk Kim } 1518e05df3b1SJaegeuk Kim return nwritten; 1519e05df3b1SJaegeuk Kim } 1520e05df3b1SJaegeuk Kim 1521cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1522cfe58f9dSJaegeuk Kim { 152380dd9c0eSChao Yu pgoff_t index = 0, end = ULONG_MAX; 1524cfe58f9dSJaegeuk Kim struct pagevec pvec; 1525cfe58f9dSJaegeuk Kim int ret2 = 0, ret = 0; 1526cfe58f9dSJaegeuk Kim 1527cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 15284ef51a8fSJaegeuk Kim 15294ef51a8fSJaegeuk Kim while (index <= end) { 15304ef51a8fSJaegeuk Kim int i, nr_pages; 15314ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1532cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 15334ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 15344ef51a8fSJaegeuk Kim if (nr_pages == 0) 15354ef51a8fSJaegeuk Kim break; 1536cfe58f9dSJaegeuk Kim 1537cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1538cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1539cfe58f9dSJaegeuk Kim 1540cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1541cfb271d4SChao Yu if (unlikely(page->index > end)) 1542cfe58f9dSJaegeuk Kim continue; 1543cfe58f9dSJaegeuk Kim 15444bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1545fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1546cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1547cfe58f9dSJaegeuk Kim ret = -EIO; 1548cfe58f9dSJaegeuk Kim } 15494bf08ff6SChao Yu } 1550cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1551cfe58f9dSJaegeuk Kim cond_resched(); 1552cfe58f9dSJaegeuk Kim } 1553cfe58f9dSJaegeuk Kim 15544ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) 1555cfe58f9dSJaegeuk Kim ret2 = -ENOSPC; 15564ef51a8fSJaegeuk Kim if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) 1557cfe58f9dSJaegeuk Kim ret2 = -EIO; 1558cfe58f9dSJaegeuk Kim if (!ret) 1559cfe58f9dSJaegeuk Kim ret = ret2; 1560cfe58f9dSJaegeuk Kim return ret; 1561cfe58f9dSJaegeuk Kim } 1562cfe58f9dSJaegeuk Kim 1563e05df3b1SJaegeuk Kim static int f2fs_write_node_page(struct page *page, 1564e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1565e05df3b1SJaegeuk Kim { 15664081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1567e05df3b1SJaegeuk Kim nid_t nid; 1568e05df3b1SJaegeuk Kim struct node_info ni; 1569fb5566daSJaegeuk Kim struct f2fs_io_info fio = { 157005ca3632SJaegeuk Kim .sbi = sbi, 1571fb5566daSJaegeuk Kim .type = NODE, 1572fb5566daSJaegeuk Kim .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, 157305ca3632SJaegeuk Kim .page = page, 15744375a336SJaegeuk Kim .encrypted_page = NULL, 1575fb5566daSJaegeuk Kim }; 1576e05df3b1SJaegeuk Kim 1577ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1578ecda0de3SChao Yu 1579caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 158087a9bd26SJaegeuk Kim goto redirty_out; 1581cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1582cf779cabSJaegeuk Kim goto redirty_out; 158387a9bd26SJaegeuk Kim 1584e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1585e05df3b1SJaegeuk Kim nid = nid_of_node(page); 15869850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1587e05df3b1SJaegeuk Kim 158825b93346SJaegeuk Kim if (wbc->for_reclaim) { 158925b93346SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 159025b93346SJaegeuk Kim goto redirty_out; 159125b93346SJaegeuk Kim } else { 159225b93346SJaegeuk Kim down_read(&sbi->node_write); 159325b93346SJaegeuk Kim } 159425b93346SJaegeuk Kim 1595e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1596e05df3b1SJaegeuk Kim 1597e05df3b1SJaegeuk Kim /* This page is already truncated */ 15986bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 15992bca1e23SJaegeuk Kim ClearPageUptodate(page); 160039936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 160125b93346SJaegeuk Kim up_read(&sbi->node_write); 160239936837SJaegeuk Kim unlock_page(page); 160339936837SJaegeuk Kim return 0; 160439936837SJaegeuk Kim } 1605e05df3b1SJaegeuk Kim 1606e05df3b1SJaegeuk Kim set_page_writeback(page); 16077a9d7548SChao Yu fio.old_blkaddr = ni.blk_addr; 160805ca3632SJaegeuk Kim write_node_page(nid, &fio); 16097a9d7548SChao Yu set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1610e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1611b3582c68SChao Yu up_read(&sbi->node_write); 16120c3a5797SChao Yu 16130c3a5797SChao Yu if (wbc->for_reclaim) 16140c3a5797SChao Yu f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, NODE, WRITE); 16150c3a5797SChao Yu 1616e05df3b1SJaegeuk Kim unlock_page(page); 161727c6bd60SJaegeuk Kim 16180c3a5797SChao Yu if (unlikely(f2fs_cp_error(sbi))) 161927c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 162027c6bd60SJaegeuk Kim 1621e05df3b1SJaegeuk Kim return 0; 162287a9bd26SJaegeuk Kim 162387a9bd26SJaegeuk Kim redirty_out: 162476f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 162587a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1626e05df3b1SJaegeuk Kim } 1627e05df3b1SJaegeuk Kim 1628e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1629e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1630e05df3b1SJaegeuk Kim { 16314081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 163250c8cdb3SJaegeuk Kim long diff; 1633e05df3b1SJaegeuk Kim 16344660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 16354660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1636e05df3b1SJaegeuk Kim 1637a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 163887d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1639d3baf95dSJaegeuk Kim goto skip_write; 1640a7fdffbdSJaegeuk Kim 1641d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1642d31c7c3fSYunlei He 164350c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1644fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 164552681375SJaegeuk Kim sync_node_pages(sbi, wbc); 164650c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1647e05df3b1SJaegeuk Kim return 0; 1648d3baf95dSJaegeuk Kim 1649d3baf95dSJaegeuk Kim skip_write: 1650d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1651d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1652d3baf95dSJaegeuk Kim return 0; 1653e05df3b1SJaegeuk Kim } 1654e05df3b1SJaegeuk Kim 1655e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1656e05df3b1SJaegeuk Kim { 165726c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 165826c6b887SJaegeuk Kim 1659e05df3b1SJaegeuk Kim SetPageUptodate(page); 1660e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1661e05df3b1SJaegeuk Kim __set_page_dirty_nobuffers(page); 16624081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1663e05df3b1SJaegeuk Kim SetPagePrivate(page); 16649e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1665e05df3b1SJaegeuk Kim return 1; 1666e05df3b1SJaegeuk Kim } 1667e05df3b1SJaegeuk Kim return 0; 1668e05df3b1SJaegeuk Kim } 1669e05df3b1SJaegeuk Kim 16700a8165d7SJaegeuk Kim /* 1671e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1672e05df3b1SJaegeuk Kim */ 1673e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1674e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1675e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1676e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1677487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1678487261f3SChao Yu .releasepage = f2fs_release_page, 1679e05df3b1SJaegeuk Kim }; 1680e05df3b1SJaegeuk Kim 16818a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 16828a7ed66aSJaegeuk Kim nid_t n) 1683e05df3b1SJaegeuk Kim { 16848a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 16853aa770a9SNamjae Jeon } 1686e05df3b1SJaegeuk Kim 16878a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 16888a7ed66aSJaegeuk Kim struct free_nid *i) 1689e05df3b1SJaegeuk Kim { 1690e05df3b1SJaegeuk Kim list_del(&i->list); 16918a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1692e05df3b1SJaegeuk Kim } 1693e05df3b1SJaegeuk Kim 16946fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1695e05df3b1SJaegeuk Kim { 16966fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1697e05df3b1SJaegeuk Kim struct free_nid *i; 169859bbd474SJaegeuk Kim struct nat_entry *ne; 1699e05df3b1SJaegeuk Kim 17006fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 170123d38844SHaicheng Li return -1; 17029198acebSJaegeuk Kim 17039198acebSJaegeuk Kim /* 0 nid should not be used */ 1704cfb271d4SChao Yu if (unlikely(nid == 0)) 17059198acebSJaegeuk Kim return 0; 170659bbd474SJaegeuk Kim 17077bd59381SGu Zheng if (build) { 170859bbd474SJaegeuk Kim /* do not add allocated nids */ 170959bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1710a5131193SJaegeuk Kim if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 17117ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 171259bbd474SJaegeuk Kim return 0; 1713e05df3b1SJaegeuk Kim } 17147bd59381SGu Zheng 17157bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1716e05df3b1SJaegeuk Kim i->nid = nid; 1717e05df3b1SJaegeuk Kim i->state = NID_NEW; 1718e05df3b1SJaegeuk Kim 1719769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1720769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1721769ec6e5SJaegeuk Kim return 0; 1722769ec6e5SJaegeuk Kim } 1723769ec6e5SJaegeuk Kim 1724e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17258a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1726e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1727769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1728e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1729e05df3b1SJaegeuk Kim return 0; 1730e05df3b1SJaegeuk Kim } 1731e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1732e05df3b1SJaegeuk Kim nm_i->fcnt++; 1733e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1734769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1735e05df3b1SJaegeuk Kim return 1; 1736e05df3b1SJaegeuk Kim } 1737e05df3b1SJaegeuk Kim 1738e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1739e05df3b1SJaegeuk Kim { 1740e05df3b1SJaegeuk Kim struct free_nid *i; 1741cf0ee0f0SChao Yu bool need_free = false; 1742cf0ee0f0SChao Yu 1743e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17448a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1745e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 17468a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1747e05df3b1SJaegeuk Kim nm_i->fcnt--; 1748cf0ee0f0SChao Yu need_free = true; 1749e05df3b1SJaegeuk Kim } 1750e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1751cf0ee0f0SChao Yu 1752cf0ee0f0SChao Yu if (need_free) 1753cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1754e05df3b1SJaegeuk Kim } 1755e05df3b1SJaegeuk Kim 17566fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1757e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1758e05df3b1SJaegeuk Kim { 17596fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1760e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1761e05df3b1SJaegeuk Kim block_t blk_addr; 1762e05df3b1SJaegeuk Kim int i; 1763e05df3b1SJaegeuk Kim 1764e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1765e05df3b1SJaegeuk Kim 1766e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 176723d38844SHaicheng Li 1768cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 176904431c44SJaegeuk Kim break; 177023d38844SHaicheng Li 1771e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 17729850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 177323d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 17746fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 177523d38844SHaicheng Li break; 177623d38844SHaicheng Li } 1777e05df3b1SJaegeuk Kim } 1778e05df3b1SJaegeuk Kim } 1779e05df3b1SJaegeuk Kim 1780e05df3b1SJaegeuk Kim static void build_free_nids(struct f2fs_sb_info *sbi) 1781e05df3b1SJaegeuk Kim { 1782e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1783e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1784b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 17858760952dSHaicheng Li int i = 0; 178655008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1787e05df3b1SJaegeuk Kim 178855008d84SJaegeuk Kim /* Enough entries */ 178955008d84SJaegeuk Kim if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) 179055008d84SJaegeuk Kim return; 1791e05df3b1SJaegeuk Kim 179255008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 179326879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 179426879fb1SChao Yu META_NAT, true); 1795e05df3b1SJaegeuk Kim 1796a5131193SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 1797a5131193SJaegeuk Kim 1798e05df3b1SJaegeuk Kim while (1) { 1799e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1800e05df3b1SJaegeuk Kim 18016fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1802e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1803e05df3b1SJaegeuk Kim 1804e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1805cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1806e05df3b1SJaegeuk Kim nid = 0; 180755008d84SJaegeuk Kim 1808a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1809e05df3b1SJaegeuk Kim break; 1810e05df3b1SJaegeuk Kim } 1811e05df3b1SJaegeuk Kim 181255008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 181355008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1814e05df3b1SJaegeuk Kim 1815e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1816b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 1817dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 1818dfc08a12SChao Yu block_t addr; 1819dfc08a12SChao Yu 1820dfc08a12SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 1821dfc08a12SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 1822e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 18236fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1824e05df3b1SJaegeuk Kim else 1825e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1826e05df3b1SJaegeuk Kim } 1827b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 1828a5131193SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 18292db2388fSChao Yu 18302db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 1831ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 1832e05df3b1SJaegeuk Kim } 1833e05df3b1SJaegeuk Kim 1834e05df3b1SJaegeuk Kim /* 1835e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1836e05df3b1SJaegeuk Kim * from second parameter of this function. 1837e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1838e05df3b1SJaegeuk Kim */ 1839e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1840e05df3b1SJaegeuk Kim { 1841e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1842e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1843e05df3b1SJaegeuk Kim retry: 1844cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 1845cb78942bSJaegeuk Kim if (time_to_inject(FAULT_ALLOC_NID)) 1846cb78942bSJaegeuk Kim return false; 1847cb78942bSJaegeuk Kim #endif 18487ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1849e05df3b1SJaegeuk Kim return false; 1850e05df3b1SJaegeuk Kim 1851e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1852e05df3b1SJaegeuk Kim 185355008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1854f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 18559850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 18562d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1857e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1858e05df3b1SJaegeuk Kim break; 1859e05df3b1SJaegeuk Kim 18609850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1861e05df3b1SJaegeuk Kim *nid = i->nid; 1862e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1863e05df3b1SJaegeuk Kim nm_i->fcnt--; 1864e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1865e05df3b1SJaegeuk Kim return true; 1866e05df3b1SJaegeuk Kim } 186755008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 186855008d84SJaegeuk Kim 186955008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 187055008d84SJaegeuk Kim mutex_lock(&nm_i->build_lock); 187155008d84SJaegeuk Kim build_free_nids(sbi); 187255008d84SJaegeuk Kim mutex_unlock(&nm_i->build_lock); 187355008d84SJaegeuk Kim goto retry; 187455008d84SJaegeuk Kim } 1875e05df3b1SJaegeuk Kim 18760a8165d7SJaegeuk Kim /* 1877e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1878e05df3b1SJaegeuk Kim */ 1879e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1880e05df3b1SJaegeuk Kim { 1881e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1882e05df3b1SJaegeuk Kim struct free_nid *i; 1883e05df3b1SJaegeuk Kim 1884e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 18858a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 18869850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 18878a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1888e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1889cf0ee0f0SChao Yu 1890cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1891e05df3b1SJaegeuk Kim } 1892e05df3b1SJaegeuk Kim 18930a8165d7SJaegeuk Kim /* 1894e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1895e05df3b1SJaegeuk Kim */ 1896e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1897e05df3b1SJaegeuk Kim { 189849952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 189949952fa1SJaegeuk Kim struct free_nid *i; 1900cf0ee0f0SChao Yu bool need_free = false; 190149952fa1SJaegeuk Kim 190265985d93SJaegeuk Kim if (!nid) 190365985d93SJaegeuk Kim return; 190465985d93SJaegeuk Kim 190549952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 19068a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 19079850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 19086fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 19098a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1910cf0ee0f0SChao Yu need_free = true; 191195630cbaSHaicheng Li } else { 191249952fa1SJaegeuk Kim i->state = NID_NEW; 191349952fa1SJaegeuk Kim nm_i->fcnt++; 191495630cbaSHaicheng Li } 191549952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1916cf0ee0f0SChao Yu 1917cf0ee0f0SChao Yu if (need_free) 1918cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1919e05df3b1SJaegeuk Kim } 1920e05df3b1SJaegeuk Kim 192131696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 192231696580SChao Yu { 192331696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 192431696580SChao Yu struct free_nid *i, *next; 192531696580SChao Yu int nr = nr_shrink; 192631696580SChao Yu 192731696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 192831696580SChao Yu return 0; 192931696580SChao Yu 193031696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 193131696580SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 193231696580SChao Yu if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK) 193331696580SChao Yu break; 193431696580SChao Yu if (i->state == NID_ALLOC) 193531696580SChao Yu continue; 193631696580SChao Yu __del_from_free_nid_list(nm_i, i); 193731696580SChao Yu kmem_cache_free(free_nid_slab, i); 1938f7409d0fSJaegeuk Kim nm_i->fcnt--; 193931696580SChao Yu nr_shrink--; 194031696580SChao Yu } 194131696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 194231696580SChao Yu mutex_unlock(&nm_i->build_lock); 194331696580SChao Yu 194431696580SChao Yu return nr - nr_shrink; 194531696580SChao Yu } 194631696580SChao Yu 194770cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 194828cdce04SChao Yu { 194928cdce04SChao Yu void *src_addr, *dst_addr; 195028cdce04SChao Yu size_t inline_size; 195128cdce04SChao Yu struct page *ipage; 195228cdce04SChao Yu struct f2fs_inode *ri; 195328cdce04SChao Yu 19544081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 19559850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 195628cdce04SChao Yu 1957e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1958e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 195991942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 1960e3b4d43fSJaegeuk Kim goto update_inode; 1961e3b4d43fSJaegeuk Kim } 1962e3b4d43fSJaegeuk Kim 196328cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 196428cdce04SChao Yu src_addr = inline_xattr_addr(page); 196528cdce04SChao Yu inline_size = inline_xattr_size(inode); 196628cdce04SChao Yu 1967fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 196828cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1969e3b4d43fSJaegeuk Kim update_inode: 197028cdce04SChao Yu update_inode(inode, ipage); 197128cdce04SChao Yu f2fs_put_page(ipage, 1); 197228cdce04SChao Yu } 197328cdce04SChao Yu 19741c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1975abb2366cSJaegeuk Kim { 19764081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1977abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1978abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1979abb2366cSJaegeuk Kim struct node_info ni; 1980abb2366cSJaegeuk Kim 1981abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1982abb2366cSJaegeuk Kim if (!prev_xnid) 1983abb2366cSJaegeuk Kim goto recover_xnid; 1984abb2366cSJaegeuk Kim 1985abb2366cSJaegeuk Kim /* Deallocate node address */ 1986abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 19879850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 1988abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 1989abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 1990479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 1991abb2366cSJaegeuk Kim 1992abb2366cSJaegeuk Kim recover_xnid: 1993abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 1994abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 19959850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 1996abb2366cSJaegeuk Kim 1997abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 1998abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 1999abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 2000479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 2001205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, new_xnid); 2002abb2366cSJaegeuk Kim 2003abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 2004abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 2005479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 2006abb2366cSJaegeuk Kim 2007abb2366cSJaegeuk Kim update_inode_page(inode); 2008abb2366cSJaegeuk Kim } 2009abb2366cSJaegeuk Kim 2010e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2011e05df3b1SJaegeuk Kim { 201258bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2013e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2014e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2015e05df3b1SJaegeuk Kim struct page *ipage; 2016e05df3b1SJaegeuk Kim 2017e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2018e8271fa3SJaegeuk Kim 2019e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2020e8271fa3SJaegeuk Kim return -EINVAL; 2021e8271fa3SJaegeuk Kim 2022300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2023e05df3b1SJaegeuk Kim if (!ipage) 2024e05df3b1SJaegeuk Kim return -ENOMEM; 2025e05df3b1SJaegeuk Kim 2026e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2027e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 2028e05df3b1SJaegeuk Kim 2029e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2030e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2031e05df3b1SJaegeuk Kim 203258bfaf44SJaegeuk Kim src = F2FS_INODE(page); 203358bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2034e05df3b1SJaegeuk Kim 203558bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 203658bfaf44SJaegeuk Kim dst->i_size = 0; 203758bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 203858bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 203958bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 2040617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 2041e05df3b1SJaegeuk Kim 2042e05df3b1SJaegeuk Kim new_ni = old_ni; 2043e05df3b1SJaegeuk Kim new_ni.ino = ino; 2044e05df3b1SJaegeuk Kim 2045cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 204665e5cd0aSJaegeuk Kim WARN_ON(1); 2047479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2048e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2049617deb8cSJaegeuk Kim set_page_dirty(ipage); 2050e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2051e05df3b1SJaegeuk Kim return 0; 2052e05df3b1SJaegeuk Kim } 2053e05df3b1SJaegeuk Kim 2054e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 2055e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2056e05df3b1SJaegeuk Kim { 2057e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2058e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2059e05df3b1SJaegeuk Kim block_t addr; 206090a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 20619ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2062e05df3b1SJaegeuk Kim 2063e05df3b1SJaegeuk Kim /* scan the node segment */ 2064e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2065e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2066e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2067e05df3b1SJaegeuk Kim 20689ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 20699af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 2070393ff91fSJaegeuk Kim 20719af0ff1cSChao Yu /* readahead node pages */ 207226879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 20739af0ff1cSChao Yu 20749ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 20752b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2076393ff91fSJaegeuk Kim 20779ecf4b80SChao Yu rn = F2FS_NODE(page); 2078393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2079393ff91fSJaegeuk Kim sum_entry->version = 0; 2080393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 20819af0ff1cSChao Yu sum_entry++; 20829ecf4b80SChao Yu f2fs_put_page(page, 1); 20839af0ff1cSChao Yu } 2084bac4eef6SChao Yu 20859ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2086bac4eef6SChao Yu addr + nrpages); 20879af0ff1cSChao Yu } 20889ecf4b80SChao Yu return 0; 2089e05df3b1SJaegeuk Kim } 2090e05df3b1SJaegeuk Kim 2091aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2092e05df3b1SJaegeuk Kim { 2093e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2094e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2095b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2096e05df3b1SJaegeuk Kim int i; 2097e05df3b1SJaegeuk Kim 2098b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2099dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2100e05df3b1SJaegeuk Kim struct nat_entry *ne; 2101e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2102dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2103e05df3b1SJaegeuk Kim 2104dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 21059be32d72SJaegeuk Kim 2106e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2107e05df3b1SJaegeuk Kim if (!ne) { 21089be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 210994dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 21109be32d72SJaegeuk Kim } 2111e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2112e05df3b1SJaegeuk Kim } 2113dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2114b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2115e05df3b1SJaegeuk Kim } 2116e05df3b1SJaegeuk Kim 2117309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2118309cc2b6SJaegeuk Kim struct list_head *head, int max) 2119e05df3b1SJaegeuk Kim { 2120309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2121e05df3b1SJaegeuk Kim 2122309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2123309cc2b6SJaegeuk Kim goto add_out; 2124e05df3b1SJaegeuk Kim 2125309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2126309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2127309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2128309cc2b6SJaegeuk Kim return; 2129309cc2b6SJaegeuk Kim } 2130309cc2b6SJaegeuk Kim } 2131309cc2b6SJaegeuk Kim add_out: 2132309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2133aec71382SChao Yu } 2134aec71382SChao Yu 2135309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 2136309cc2b6SJaegeuk Kim struct nat_entry_set *set) 2137309cc2b6SJaegeuk Kim { 2138309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2139b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2140309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2141309cc2b6SJaegeuk Kim bool to_journal = true; 2142309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2143309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2144309cc2b6SJaegeuk Kim struct page *page = NULL; 2145aec71382SChao Yu 2146aec71382SChao Yu /* 2147aec71382SChao Yu * there are two steps to flush nat entries: 2148aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2149aec71382SChao Yu * #2, flush nat entries to nat page. 2150aec71382SChao Yu */ 2151dfc08a12SChao Yu if (!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2152aec71382SChao Yu to_journal = false; 2153aec71382SChao Yu 2154aec71382SChao Yu if (to_journal) { 2155b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2156aec71382SChao Yu } else { 2157e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2158e05df3b1SJaegeuk Kim nat_blk = page_address(page); 21599850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2160e05df3b1SJaegeuk Kim } 2161e05df3b1SJaegeuk Kim 2162aec71382SChao Yu /* flush dirty nats in nat entry set */ 2163309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2164aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2165aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2166aec71382SChao Yu int offset; 2167aec71382SChao Yu 2168309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 2169309cc2b6SJaegeuk Kim continue; 2170309cc2b6SJaegeuk Kim 2171aec71382SChao Yu if (to_journal) { 2172dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2173aec71382SChao Yu NAT_JOURNAL, nid, 1); 21749850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2175dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2176dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2177aec71382SChao Yu } else { 2178aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2179aec71382SChao Yu } 2180aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 218188bd02c9SJaegeuk Kim nat_reset_flag(ne); 2182309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 2183309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 2184309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 2185e05df3b1SJaegeuk Kim } 2186aec71382SChao Yu 2187aec71382SChao Yu if (to_journal) 2188b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2189aec71382SChao Yu else 2190e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2191aec71382SChao Yu 219280ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 219380ec2e91SChangman Lee 2194309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2195309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2196309cc2b6SJaegeuk Kim } 2197aec71382SChao Yu 2198309cc2b6SJaegeuk Kim /* 2199309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2200309cc2b6SJaegeuk Kim */ 2201309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 2202309cc2b6SJaegeuk Kim { 2203309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2204309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2205b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 22067aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2207309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2208309cc2b6SJaegeuk Kim unsigned int found; 2209309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2210309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2211309cc2b6SJaegeuk Kim 221220d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 221320d047c8SChangman Lee return; 2214a5131193SJaegeuk Kim 2215a5131193SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2216a5131193SJaegeuk Kim 2217309cc2b6SJaegeuk Kim /* 2218309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2219309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2220309cc2b6SJaegeuk Kim * into nat entry set. 2221309cc2b6SJaegeuk Kim */ 2222dfc08a12SChao Yu if (!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2223309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2224309cc2b6SJaegeuk Kim 2225309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 22267aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2227309cc2b6SJaegeuk Kim unsigned idx; 2228309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2229309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2230309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2231dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2232309cc2b6SJaegeuk Kim } 2233309cc2b6SJaegeuk Kim 2234309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2235309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 2236309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 2237309cc2b6SJaegeuk Kim 2238a5131193SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2239a5131193SJaegeuk Kim 22409850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 2241e05df3b1SJaegeuk Kim } 2242e05df3b1SJaegeuk Kim 2243e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2244e05df3b1SJaegeuk Kim { 2245e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2246e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2247e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 2248e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 2249e05df3b1SJaegeuk Kim 2250e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2251e05df3b1SJaegeuk Kim 2252e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2253e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 2254e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 2255b63da15eSJaegeuk Kim 22567ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 22577ee0eeabSJaegeuk Kim 2258b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 2259c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 2260e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 2261e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2262cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2263ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 22642304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2265e05df3b1SJaegeuk Kim 22668a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2267e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 2268769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2269769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2270e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2271e05df3b1SJaegeuk Kim 2272e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2273e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 22748b26ef98SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2275e05df3b1SJaegeuk Kim 2276e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 227779b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2278e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2279e05df3b1SJaegeuk Kim if (!version_bitmap) 2280e05df3b1SJaegeuk Kim return -EFAULT; 2281e05df3b1SJaegeuk Kim 228279b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 228379b5793bSAlexandru Gheorghiu GFP_KERNEL); 228479b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 228579b5793bSAlexandru Gheorghiu return -ENOMEM; 2286e05df3b1SJaegeuk Kim return 0; 2287e05df3b1SJaegeuk Kim } 2288e05df3b1SJaegeuk Kim 2289e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2290e05df3b1SJaegeuk Kim { 2291e05df3b1SJaegeuk Kim int err; 2292e05df3b1SJaegeuk Kim 2293e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2294e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2295e05df3b1SJaegeuk Kim return -ENOMEM; 2296e05df3b1SJaegeuk Kim 2297e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2298e05df3b1SJaegeuk Kim if (err) 2299e05df3b1SJaegeuk Kim return err; 2300e05df3b1SJaegeuk Kim 2301e05df3b1SJaegeuk Kim build_free_nids(sbi); 2302e05df3b1SJaegeuk Kim return 0; 2303e05df3b1SJaegeuk Kim } 2304e05df3b1SJaegeuk Kim 2305e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2306e05df3b1SJaegeuk Kim { 2307e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2308e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2309e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 23107aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2311e05df3b1SJaegeuk Kim nid_t nid = 0; 2312e05df3b1SJaegeuk Kim unsigned int found; 2313e05df3b1SJaegeuk Kim 2314e05df3b1SJaegeuk Kim if (!nm_i) 2315e05df3b1SJaegeuk Kim return; 2316e05df3b1SJaegeuk Kim 2317e05df3b1SJaegeuk Kim /* destroy free nid list */ 2318e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2319e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 23209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 23218a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2322e05df3b1SJaegeuk Kim nm_i->fcnt--; 2323cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2324cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2325cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2326e05df3b1SJaegeuk Kim } 23279850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2328e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2329e05df3b1SJaegeuk Kim 2330e05df3b1SJaegeuk Kim /* destroy nat cache */ 23318b26ef98SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2332e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2333e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2334e05df3b1SJaegeuk Kim unsigned idx; 23357aed0d45SJaegeuk Kim 2336b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2337b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2338b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2339e05df3b1SJaegeuk Kim } 23409850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 23417aed0d45SJaegeuk Kim 23427aed0d45SJaegeuk Kim /* destroy nat set cache */ 23437aed0d45SJaegeuk Kim nid = 0; 23447aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 23457aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 23467aed0d45SJaegeuk Kim unsigned idx; 23477aed0d45SJaegeuk Kim 23487aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 23497aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 23507aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 23517aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 23527aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 23537aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 23547aed0d45SJaegeuk Kim } 23557aed0d45SJaegeuk Kim } 23568b26ef98SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2357e05df3b1SJaegeuk Kim 2358e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2359e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2360e05df3b1SJaegeuk Kim kfree(nm_i); 2361e05df3b1SJaegeuk Kim } 2362e05df3b1SJaegeuk Kim 23636e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2364e05df3b1SJaegeuk Kim { 2365e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2366e8512d2eSGu Zheng sizeof(struct nat_entry)); 2367e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2368aec71382SChao Yu goto fail; 2369e05df3b1SJaegeuk Kim 2370e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2371e8512d2eSGu Zheng sizeof(struct free_nid)); 2372aec71382SChao Yu if (!free_nid_slab) 2373ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2374aec71382SChao Yu 2375aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2376aec71382SChao Yu sizeof(struct nat_entry_set)); 2377aec71382SChao Yu if (!nat_entry_set_slab) 2378ce3e6d25SMarkus Elfring goto destroy_free_nid; 2379e05df3b1SJaegeuk Kim return 0; 2380aec71382SChao Yu 2381ce3e6d25SMarkus Elfring destroy_free_nid: 2382aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2383ce3e6d25SMarkus Elfring destroy_nat_entry: 2384aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2385aec71382SChao Yu fail: 2386aec71382SChao Yu return -ENOMEM; 2387e05df3b1SJaegeuk Kim } 2388e05df3b1SJaegeuk Kim 2389e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2390e05df3b1SJaegeuk Kim { 2391aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2392e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2393e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2394e05df3b1SJaegeuk Kim } 2395