10a8165d7SJaegeuk Kim /* 2e05df3b1SJaegeuk Kim * fs/f2fs/node.c 3e05df3b1SJaegeuk Kim * 4e05df3b1SJaegeuk Kim * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5e05df3b1SJaegeuk Kim * http://www.samsung.com/ 6e05df3b1SJaegeuk Kim * 7e05df3b1SJaegeuk Kim * This program is free software; you can redistribute it and/or modify 8e05df3b1SJaegeuk Kim * it under the terms of the GNU General Public License version 2 as 9e05df3b1SJaegeuk Kim * published by the Free Software Foundation. 10e05df3b1SJaegeuk Kim */ 11e05df3b1SJaegeuk Kim #include <linux/fs.h> 12e05df3b1SJaegeuk Kim #include <linux/f2fs_fs.h> 13e05df3b1SJaegeuk Kim #include <linux/mpage.h> 14e05df3b1SJaegeuk Kim #include <linux/backing-dev.h> 15e05df3b1SJaegeuk Kim #include <linux/blkdev.h> 16e05df3b1SJaegeuk Kim #include <linux/pagevec.h> 17e05df3b1SJaegeuk Kim #include <linux/swap.h> 18e05df3b1SJaegeuk Kim 19e05df3b1SJaegeuk Kim #include "f2fs.h" 20e05df3b1SJaegeuk Kim #include "node.h" 21e05df3b1SJaegeuk Kim #include "segment.h" 229e4ded3fSJaegeuk Kim #include "trace.h" 2351dd6249SNamjae Jeon #include <trace/events/f2fs.h> 24e05df3b1SJaegeuk Kim 25f978f5a0SGu Zheng #define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) 26f978f5a0SGu Zheng 27e05df3b1SJaegeuk Kim static struct kmem_cache *nat_entry_slab; 28e05df3b1SJaegeuk Kim static struct kmem_cache *free_nid_slab; 29aec71382SChao Yu static struct kmem_cache *nat_entry_set_slab; 30e05df3b1SJaegeuk Kim 316fb03f3aSJaegeuk Kim bool available_free_memory(struct f2fs_sb_info *sbi, int type) 32cdfc41c1SJaegeuk Kim { 336fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 34cdfc41c1SJaegeuk Kim struct sysinfo val; 35e5e7ea3cSJaegeuk Kim unsigned long avail_ram; 36cdfc41c1SJaegeuk Kim unsigned long mem_size = 0; 376fb03f3aSJaegeuk Kim bool res = false; 38cdfc41c1SJaegeuk Kim 39cdfc41c1SJaegeuk Kim si_meminfo(&val); 40e5e7ea3cSJaegeuk Kim 41e5e7ea3cSJaegeuk Kim /* only uses low memory */ 42e5e7ea3cSJaegeuk Kim avail_ram = val.totalram - val.totalhigh; 43e5e7ea3cSJaegeuk Kim 44429511cdSChao Yu /* 45429511cdSChao Yu * give 25%, 25%, 50%, 50%, 50% memory for each components respectively 46429511cdSChao Yu */ 476fb03f3aSJaegeuk Kim if (type == FREE_NIDS) { 48e5e7ea3cSJaegeuk Kim mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 4909cbfeafSKirill A. Shutemov PAGE_SHIFT; 50e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 516fb03f3aSJaegeuk Kim } else if (type == NAT_ENTRIES) { 52e5e7ea3cSJaegeuk Kim mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 5309cbfeafSKirill A. Shutemov PAGE_SHIFT; 54e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); 55e589c2c4SJaegeuk Kim if (excess_cached_nats(sbi)) 56e589c2c4SJaegeuk Kim res = false; 57a1257023SJaegeuk Kim } else if (type == DIRTY_DENTS) { 58a1257023SJaegeuk Kim if (sbi->sb->s_bdi->wb.dirty_exceeded) 59a1257023SJaegeuk Kim return false; 60a1257023SJaegeuk Kim mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); 61a1257023SJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 62e5e7ea3cSJaegeuk Kim } else if (type == INO_ENTRIES) { 63e5e7ea3cSJaegeuk Kim int i; 64e5e7ea3cSJaegeuk Kim 65e5e7ea3cSJaegeuk Kim for (i = 0; i <= UPDATE_INO; i++) 6667298804SChao Yu mem_size += (sbi->im[i].ino_num * 6709cbfeafSKirill A. Shutemov sizeof(struct ino_entry)) >> PAGE_SHIFT; 68e5e7ea3cSJaegeuk Kim res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 69429511cdSChao Yu } else if (type == EXTENT_CACHE) { 707441ccefSJaegeuk Kim mem_size = (atomic_read(&sbi->total_ext_tree) * 717441ccefSJaegeuk Kim sizeof(struct extent_tree) + 72429511cdSChao Yu atomic_read(&sbi->total_ext_node) * 7309cbfeafSKirill A. Shutemov sizeof(struct extent_node)) >> PAGE_SHIFT; 74429511cdSChao Yu res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); 751e84371fSJaegeuk Kim } else { 761663cae4SJaegeuk Kim if (!sbi->sb->s_bdi->wb.dirty_exceeded) 771663cae4SJaegeuk Kim return true; 786fb03f3aSJaegeuk Kim } 796fb03f3aSJaegeuk Kim return res; 80cdfc41c1SJaegeuk Kim } 81cdfc41c1SJaegeuk Kim 82e05df3b1SJaegeuk Kim static void clear_node_page_dirty(struct page *page) 83e05df3b1SJaegeuk Kim { 84e05df3b1SJaegeuk Kim struct address_space *mapping = page->mapping; 85e05df3b1SJaegeuk Kim unsigned int long flags; 86e05df3b1SJaegeuk Kim 87e05df3b1SJaegeuk Kim if (PageDirty(page)) { 88e05df3b1SJaegeuk Kim spin_lock_irqsave(&mapping->tree_lock, flags); 89e05df3b1SJaegeuk Kim radix_tree_tag_clear(&mapping->page_tree, 90e05df3b1SJaegeuk Kim page_index(page), 91e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY); 92e05df3b1SJaegeuk Kim spin_unlock_irqrestore(&mapping->tree_lock, flags); 93e05df3b1SJaegeuk Kim 94e05df3b1SJaegeuk Kim clear_page_dirty_for_io(page); 954081363fSJaegeuk Kim dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); 96e05df3b1SJaegeuk Kim } 97e05df3b1SJaegeuk Kim ClearPageUptodate(page); 98e05df3b1SJaegeuk Kim } 99e05df3b1SJaegeuk Kim 100e05df3b1SJaegeuk Kim static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 101e05df3b1SJaegeuk Kim { 102e05df3b1SJaegeuk Kim pgoff_t index = current_nat_addr(sbi, nid); 103e05df3b1SJaegeuk Kim return get_meta_page(sbi, index); 104e05df3b1SJaegeuk Kim } 105e05df3b1SJaegeuk Kim 106e05df3b1SJaegeuk Kim static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) 107e05df3b1SJaegeuk Kim { 108e05df3b1SJaegeuk Kim struct page *src_page; 109e05df3b1SJaegeuk Kim struct page *dst_page; 110e05df3b1SJaegeuk Kim pgoff_t src_off; 111e05df3b1SJaegeuk Kim pgoff_t dst_off; 112e05df3b1SJaegeuk Kim void *src_addr; 113e05df3b1SJaegeuk Kim void *dst_addr; 114e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 115e05df3b1SJaegeuk Kim 116e05df3b1SJaegeuk Kim src_off = current_nat_addr(sbi, nid); 117e05df3b1SJaegeuk Kim dst_off = next_nat_addr(sbi, src_off); 118e05df3b1SJaegeuk Kim 119e05df3b1SJaegeuk Kim /* get current nat block page with lock */ 120e05df3b1SJaegeuk Kim src_page = get_meta_page(sbi, src_off); 121e05df3b1SJaegeuk Kim dst_page = grab_meta_page(sbi, dst_off); 1229850cf4aSJaegeuk Kim f2fs_bug_on(sbi, PageDirty(src_page)); 123e05df3b1SJaegeuk Kim 124e05df3b1SJaegeuk Kim src_addr = page_address(src_page); 125e05df3b1SJaegeuk Kim dst_addr = page_address(dst_page); 12609cbfeafSKirill A. Shutemov memcpy(dst_addr, src_addr, PAGE_SIZE); 127e05df3b1SJaegeuk Kim set_page_dirty(dst_page); 128e05df3b1SJaegeuk Kim f2fs_put_page(src_page, 1); 129e05df3b1SJaegeuk Kim 130e05df3b1SJaegeuk Kim set_to_next_nat(nm_i, nid); 131e05df3b1SJaegeuk Kim 132e05df3b1SJaegeuk Kim return dst_page; 133e05df3b1SJaegeuk Kim } 134e05df3b1SJaegeuk Kim 135e05df3b1SJaegeuk Kim static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) 136e05df3b1SJaegeuk Kim { 137e05df3b1SJaegeuk Kim return radix_tree_lookup(&nm_i->nat_root, n); 138e05df3b1SJaegeuk Kim } 139e05df3b1SJaegeuk Kim 140e05df3b1SJaegeuk Kim static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, 141e05df3b1SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry **ep) 142e05df3b1SJaegeuk Kim { 143e05df3b1SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); 144e05df3b1SJaegeuk Kim } 145e05df3b1SJaegeuk Kim 146e05df3b1SJaegeuk Kim static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) 147e05df3b1SJaegeuk Kim { 148e05df3b1SJaegeuk Kim list_del(&e->list); 149e05df3b1SJaegeuk Kim radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); 150e05df3b1SJaegeuk Kim nm_i->nat_cnt--; 151e05df3b1SJaegeuk Kim kmem_cache_free(nat_entry_slab, e); 152e05df3b1SJaegeuk Kim } 153e05df3b1SJaegeuk Kim 154309cc2b6SJaegeuk Kim static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, 155309cc2b6SJaegeuk Kim struct nat_entry *ne) 156309cc2b6SJaegeuk Kim { 157309cc2b6SJaegeuk Kim nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 158309cc2b6SJaegeuk Kim struct nat_entry_set *head; 159309cc2b6SJaegeuk Kim 160309cc2b6SJaegeuk Kim if (get_nat_flag(ne, IS_DIRTY)) 161309cc2b6SJaegeuk Kim return; 1629be32d72SJaegeuk Kim 163309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 164309cc2b6SJaegeuk Kim if (!head) { 16580c54505SJaegeuk Kim head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); 166309cc2b6SJaegeuk Kim 167309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->entry_list); 168309cc2b6SJaegeuk Kim INIT_LIST_HEAD(&head->set_list); 169309cc2b6SJaegeuk Kim head->set = set; 170309cc2b6SJaegeuk Kim head->entry_cnt = 0; 1719be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); 172309cc2b6SJaegeuk Kim } 173309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &head->entry_list); 174309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt++; 175309cc2b6SJaegeuk Kim head->entry_cnt++; 176309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, true); 177309cc2b6SJaegeuk Kim } 178309cc2b6SJaegeuk Kim 179309cc2b6SJaegeuk Kim static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, 180309cc2b6SJaegeuk Kim struct nat_entry *ne) 181309cc2b6SJaegeuk Kim { 18220d047c8SChangman Lee nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); 183309cc2b6SJaegeuk Kim struct nat_entry_set *head; 184309cc2b6SJaegeuk Kim 185309cc2b6SJaegeuk Kim head = radix_tree_lookup(&nm_i->nat_set_root, set); 186309cc2b6SJaegeuk Kim if (head) { 187309cc2b6SJaegeuk Kim list_move_tail(&ne->list, &nm_i->nat_entries); 188309cc2b6SJaegeuk Kim set_nat_flag(ne, IS_DIRTY, false); 189309cc2b6SJaegeuk Kim head->entry_cnt--; 190309cc2b6SJaegeuk Kim nm_i->dirty_nat_cnt--; 191309cc2b6SJaegeuk Kim } 192309cc2b6SJaegeuk Kim } 193309cc2b6SJaegeuk Kim 194309cc2b6SJaegeuk Kim static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 195309cc2b6SJaegeuk Kim nid_t start, unsigned int nr, struct nat_entry_set **ep) 196309cc2b6SJaegeuk Kim { 197309cc2b6SJaegeuk Kim return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, 198309cc2b6SJaegeuk Kim start, nr); 199309cc2b6SJaegeuk Kim } 200309cc2b6SJaegeuk Kim 2012dcf51abSJaegeuk Kim int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) 2022dcf51abSJaegeuk Kim { 2032dcf51abSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2042dcf51abSJaegeuk Kim struct nat_entry *e; 2052dcf51abSJaegeuk Kim bool need = false; 2062dcf51abSJaegeuk Kim 207b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 2082dcf51abSJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2092dcf51abSJaegeuk Kim if (e) { 2102dcf51abSJaegeuk Kim if (!get_nat_flag(e, IS_CHECKPOINTED) && 2112dcf51abSJaegeuk Kim !get_nat_flag(e, HAS_FSYNCED_INODE)) 2122dcf51abSJaegeuk Kim need = true; 2132dcf51abSJaegeuk Kim } 214b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 2152dcf51abSJaegeuk Kim return need; 2162dcf51abSJaegeuk Kim } 2172dcf51abSJaegeuk Kim 21888bd02c9SJaegeuk Kim bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) 219e05df3b1SJaegeuk Kim { 220e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 221e05df3b1SJaegeuk Kim struct nat_entry *e; 22288bd02c9SJaegeuk Kim bool is_cp = true; 223e05df3b1SJaegeuk Kim 224b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 225e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 2267ef35e3bSJaegeuk Kim if (e && !get_nat_flag(e, IS_CHECKPOINTED)) 22788bd02c9SJaegeuk Kim is_cp = false; 228b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 229e05df3b1SJaegeuk Kim return is_cp; 230e05df3b1SJaegeuk Kim } 231e05df3b1SJaegeuk Kim 23288bd02c9SJaegeuk Kim bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) 233b6fe5873SJaegeuk Kim { 234b6fe5873SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 235b6fe5873SJaegeuk Kim struct nat_entry *e; 23688bd02c9SJaegeuk Kim bool need_update = true; 237b6fe5873SJaegeuk Kim 238b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 23988bd02c9SJaegeuk Kim e = __lookup_nat_cache(nm_i, ino); 24088bd02c9SJaegeuk Kim if (e && get_nat_flag(e, HAS_LAST_FSYNC) && 24188bd02c9SJaegeuk Kim (get_nat_flag(e, IS_CHECKPOINTED) || 24288bd02c9SJaegeuk Kim get_nat_flag(e, HAS_FSYNCED_INODE))) 24388bd02c9SJaegeuk Kim need_update = false; 244b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 24588bd02c9SJaegeuk Kim return need_update; 246b6fe5873SJaegeuk Kim } 247b6fe5873SJaegeuk Kim 248e05df3b1SJaegeuk Kim static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) 249e05df3b1SJaegeuk Kim { 250e05df3b1SJaegeuk Kim struct nat_entry *new; 251e05df3b1SJaegeuk Kim 25280c54505SJaegeuk Kim new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); 2539be32d72SJaegeuk Kim f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); 254e05df3b1SJaegeuk Kim memset(new, 0, sizeof(struct nat_entry)); 255e05df3b1SJaegeuk Kim nat_set_nid(new, nid); 25688bd02c9SJaegeuk Kim nat_reset_flag(new); 257e05df3b1SJaegeuk Kim list_add_tail(&new->list, &nm_i->nat_entries); 258e05df3b1SJaegeuk Kim nm_i->nat_cnt++; 259e05df3b1SJaegeuk Kim return new; 260e05df3b1SJaegeuk Kim } 261e05df3b1SJaegeuk Kim 2621515aef0SChao Yu static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, 263e05df3b1SJaegeuk Kim struct f2fs_nat_entry *ne) 264e05df3b1SJaegeuk Kim { 2651515aef0SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 266e05df3b1SJaegeuk Kim struct nat_entry *e; 2679be32d72SJaegeuk Kim 268e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 269e05df3b1SJaegeuk Kim if (!e) { 270e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, nid); 27194dac22eSChao Yu node_info_from_raw_nat(&e->ni, ne); 2721515aef0SChao Yu } else { 2731515aef0SChao Yu f2fs_bug_on(sbi, nat_get_ino(e) != ne->ino || 2741515aef0SChao Yu nat_get_blkaddr(e) != ne->block_addr || 2751515aef0SChao Yu nat_get_version(e) != ne->version); 276e05df3b1SJaegeuk Kim } 277e05df3b1SJaegeuk Kim } 278e05df3b1SJaegeuk Kim 279e05df3b1SJaegeuk Kim static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 280479f40c4SJaegeuk Kim block_t new_blkaddr, bool fsync_done) 281e05df3b1SJaegeuk Kim { 282e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 283e05df3b1SJaegeuk Kim struct nat_entry *e; 2849be32d72SJaegeuk Kim 285b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 286e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->nid); 287e05df3b1SJaegeuk Kim if (!e) { 288e05df3b1SJaegeuk Kim e = grab_nat_entry(nm_i, ni->nid); 2895c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2909850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); 291e05df3b1SJaegeuk Kim } else if (new_blkaddr == NEW_ADDR) { 292e05df3b1SJaegeuk Kim /* 293e05df3b1SJaegeuk Kim * when nid is reallocated, 294e05df3b1SJaegeuk Kim * previous nat entry can be remained in nat cache. 295e05df3b1SJaegeuk Kim * So, reinitialize it with new information. 296e05df3b1SJaegeuk Kim */ 2975c27f4eeSChao Yu copy_node_info(&e->ni, ni); 2989850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); 299e05df3b1SJaegeuk Kim } 300e05df3b1SJaegeuk Kim 301e05df3b1SJaegeuk Kim /* sanity check */ 3029850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); 3039850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && 304e05df3b1SJaegeuk Kim new_blkaddr == NULL_ADDR); 3059850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && 306e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 3079850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && 308e05df3b1SJaegeuk Kim nat_get_blkaddr(e) != NULL_ADDR && 309e05df3b1SJaegeuk Kim new_blkaddr == NEW_ADDR); 310e05df3b1SJaegeuk Kim 311e1c42045Sarter97 /* increment version no as node is removed */ 312e05df3b1SJaegeuk Kim if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { 313e05df3b1SJaegeuk Kim unsigned char version = nat_get_version(e); 314e05df3b1SJaegeuk Kim nat_set_version(e, inc_node_version(version)); 31526834466SJaegeuk Kim 31626834466SJaegeuk Kim /* in order to reuse the nid */ 31726834466SJaegeuk Kim if (nm_i->next_scan_nid > ni->nid) 31826834466SJaegeuk Kim nm_i->next_scan_nid = ni->nid; 319e05df3b1SJaegeuk Kim } 320e05df3b1SJaegeuk Kim 321e05df3b1SJaegeuk Kim /* change address */ 322e05df3b1SJaegeuk Kim nat_set_blkaddr(e, new_blkaddr); 32388bd02c9SJaegeuk Kim if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) 32488bd02c9SJaegeuk Kim set_nat_flag(e, IS_CHECKPOINTED, false); 325e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, e); 326479f40c4SJaegeuk Kim 327479f40c4SJaegeuk Kim /* update fsync_mark if its inode nat entry is still alive */ 328d5b692b7SChao Yu if (ni->nid != ni->ino) 329479f40c4SJaegeuk Kim e = __lookup_nat_cache(nm_i, ni->ino); 33088bd02c9SJaegeuk Kim if (e) { 33188bd02c9SJaegeuk Kim if (fsync_done && ni->nid == ni->ino) 33288bd02c9SJaegeuk Kim set_nat_flag(e, HAS_FSYNCED_INODE, true); 33388bd02c9SJaegeuk Kim set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); 33488bd02c9SJaegeuk Kim } 335b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 336e05df3b1SJaegeuk Kim } 337e05df3b1SJaegeuk Kim 3384660f9c0SJaegeuk Kim int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) 339e05df3b1SJaegeuk Kim { 340e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 3411b38dc8eSJaegeuk Kim int nr = nr_shrink; 342e05df3b1SJaegeuk Kim 343b873b798SJaegeuk Kim if (!down_write_trylock(&nm_i->nat_tree_lock)) 344b873b798SJaegeuk Kim return 0; 345e05df3b1SJaegeuk Kim 346e05df3b1SJaegeuk Kim while (nr_shrink && !list_empty(&nm_i->nat_entries)) { 347e05df3b1SJaegeuk Kim struct nat_entry *ne; 348e05df3b1SJaegeuk Kim ne = list_first_entry(&nm_i->nat_entries, 349e05df3b1SJaegeuk Kim struct nat_entry, list); 350e05df3b1SJaegeuk Kim __del_from_nat_cache(nm_i, ne); 351e05df3b1SJaegeuk Kim nr_shrink--; 352e05df3b1SJaegeuk Kim } 353b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 3541b38dc8eSJaegeuk Kim return nr - nr_shrink; 355e05df3b1SJaegeuk Kim } 356e05df3b1SJaegeuk Kim 3570a8165d7SJaegeuk Kim /* 358e1c42045Sarter97 * This function always returns success 359e05df3b1SJaegeuk Kim */ 360e05df3b1SJaegeuk Kim void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) 361e05df3b1SJaegeuk Kim { 362e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 363e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 364b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 365e05df3b1SJaegeuk Kim nid_t start_nid = START_NID(nid); 366e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk; 367e05df3b1SJaegeuk Kim struct page *page = NULL; 368e05df3b1SJaegeuk Kim struct f2fs_nat_entry ne; 369e05df3b1SJaegeuk Kim struct nat_entry *e; 370e05df3b1SJaegeuk Kim int i; 371e05df3b1SJaegeuk Kim 372e05df3b1SJaegeuk Kim ni->nid = nid; 373e05df3b1SJaegeuk Kim 374e05df3b1SJaegeuk Kim /* Check nat cache */ 375b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 376e05df3b1SJaegeuk Kim e = __lookup_nat_cache(nm_i, nid); 377e05df3b1SJaegeuk Kim if (e) { 378e05df3b1SJaegeuk Kim ni->ino = nat_get_ino(e); 379e05df3b1SJaegeuk Kim ni->blk_addr = nat_get_blkaddr(e); 380e05df3b1SJaegeuk Kim ni->version = nat_get_version(e); 381b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 382e05df3b1SJaegeuk Kim return; 3831515aef0SChao Yu } 384e05df3b1SJaegeuk Kim 3853547ea96SJaegeuk Kim memset(&ne, 0, sizeof(struct f2fs_nat_entry)); 3863547ea96SJaegeuk Kim 387e05df3b1SJaegeuk Kim /* Check current segment summary */ 388b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 389dfc08a12SChao Yu i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); 390e05df3b1SJaegeuk Kim if (i >= 0) { 391dfc08a12SChao Yu ne = nat_in_journal(journal, i); 392e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 393e05df3b1SJaegeuk Kim } 394b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 395e05df3b1SJaegeuk Kim if (i >= 0) 396e05df3b1SJaegeuk Kim goto cache; 397e05df3b1SJaegeuk Kim 398e05df3b1SJaegeuk Kim /* Fill node_info from nat page */ 399e05df3b1SJaegeuk Kim page = get_current_nat_page(sbi, start_nid); 400e05df3b1SJaegeuk Kim nat_blk = (struct f2fs_nat_block *)page_address(page); 401e05df3b1SJaegeuk Kim ne = nat_blk->entries[nid - start_nid]; 402e05df3b1SJaegeuk Kim node_info_from_raw_nat(ni, &ne); 403e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 404e05df3b1SJaegeuk Kim cache: 405b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 406e05df3b1SJaegeuk Kim /* cache nat entry */ 407b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 4081515aef0SChao Yu cache_nat_entry(sbi, nid, &ne); 409b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 410e05df3b1SJaegeuk Kim } 411e05df3b1SJaegeuk Kim 41279344efbSJaegeuk Kim /* 41379344efbSJaegeuk Kim * readahead MAX_RA_NODE number of node pages. 41479344efbSJaegeuk Kim */ 41579344efbSJaegeuk Kim static void ra_node_pages(struct page *parent, int start, int n) 41679344efbSJaegeuk Kim { 41779344efbSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 41879344efbSJaegeuk Kim struct blk_plug plug; 41979344efbSJaegeuk Kim int i, end; 42079344efbSJaegeuk Kim nid_t nid; 42179344efbSJaegeuk Kim 42279344efbSJaegeuk Kim blk_start_plug(&plug); 42379344efbSJaegeuk Kim 42479344efbSJaegeuk Kim /* Then, try readahead for siblings of the desired node */ 42579344efbSJaegeuk Kim end = start + n; 42679344efbSJaegeuk Kim end = min(end, NIDS_PER_BLOCK); 42779344efbSJaegeuk Kim for (i = start; i < end; i++) { 42879344efbSJaegeuk Kim nid = get_nid(parent, i, false); 42979344efbSJaegeuk Kim ra_node_page(sbi, nid); 43079344efbSJaegeuk Kim } 43179344efbSJaegeuk Kim 43279344efbSJaegeuk Kim blk_finish_plug(&plug); 43379344efbSJaegeuk Kim } 43479344efbSJaegeuk Kim 4353cf45747SChao Yu pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) 4363cf45747SChao Yu { 4373cf45747SChao Yu const long direct_index = ADDRS_PER_INODE(dn->inode); 4383cf45747SChao Yu const long direct_blks = ADDRS_PER_BLOCK; 4393cf45747SChao Yu const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 4403cf45747SChao Yu unsigned int skipped_unit = ADDRS_PER_BLOCK; 4413cf45747SChao Yu int cur_level = dn->cur_level; 4423cf45747SChao Yu int max_level = dn->max_level; 4433cf45747SChao Yu pgoff_t base = 0; 4443cf45747SChao Yu 4453cf45747SChao Yu if (!dn->max_level) 4463cf45747SChao Yu return pgofs + 1; 4473cf45747SChao Yu 4483cf45747SChao Yu while (max_level-- > cur_level) 4493cf45747SChao Yu skipped_unit *= NIDS_PER_BLOCK; 4503cf45747SChao Yu 4513cf45747SChao Yu switch (dn->max_level) { 4523cf45747SChao Yu case 3: 4533cf45747SChao Yu base += 2 * indirect_blks; 4543cf45747SChao Yu case 2: 4553cf45747SChao Yu base += 2 * direct_blks; 4563cf45747SChao Yu case 1: 4573cf45747SChao Yu base += direct_index; 4583cf45747SChao Yu break; 4593cf45747SChao Yu default: 4603cf45747SChao Yu f2fs_bug_on(F2FS_I_SB(dn->inode), 1); 4613cf45747SChao Yu } 4623cf45747SChao Yu 4633cf45747SChao Yu return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; 4643cf45747SChao Yu } 4653cf45747SChao Yu 4660a8165d7SJaegeuk Kim /* 467e05df3b1SJaegeuk Kim * The maximum depth is four. 468e05df3b1SJaegeuk Kim * Offset[0] will have raw inode offset. 469e05df3b1SJaegeuk Kim */ 47081ca7350SChao Yu static int get_node_path(struct inode *inode, long block, 471de93653fSJaegeuk Kim int offset[4], unsigned int noffset[4]) 472e05df3b1SJaegeuk Kim { 47381ca7350SChao Yu const long direct_index = ADDRS_PER_INODE(inode); 474e05df3b1SJaegeuk Kim const long direct_blks = ADDRS_PER_BLOCK; 475e05df3b1SJaegeuk Kim const long dptrs_per_blk = NIDS_PER_BLOCK; 476e05df3b1SJaegeuk Kim const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; 477e05df3b1SJaegeuk Kim const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; 478e05df3b1SJaegeuk Kim int n = 0; 479e05df3b1SJaegeuk Kim int level = 0; 480e05df3b1SJaegeuk Kim 481e05df3b1SJaegeuk Kim noffset[0] = 0; 482e05df3b1SJaegeuk Kim 483e05df3b1SJaegeuk Kim if (block < direct_index) { 48425c0a6e5SNamjae Jeon offset[n] = block; 485e05df3b1SJaegeuk Kim goto got; 486e05df3b1SJaegeuk Kim } 487e05df3b1SJaegeuk Kim block -= direct_index; 488e05df3b1SJaegeuk Kim if (block < direct_blks) { 489e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR1_BLOCK; 490e05df3b1SJaegeuk Kim noffset[n] = 1; 49125c0a6e5SNamjae Jeon offset[n] = block; 492e05df3b1SJaegeuk Kim level = 1; 493e05df3b1SJaegeuk Kim goto got; 494e05df3b1SJaegeuk Kim } 495e05df3b1SJaegeuk Kim block -= direct_blks; 496e05df3b1SJaegeuk Kim if (block < direct_blks) { 497e05df3b1SJaegeuk Kim offset[n++] = NODE_DIR2_BLOCK; 498e05df3b1SJaegeuk Kim noffset[n] = 2; 49925c0a6e5SNamjae Jeon offset[n] = block; 500e05df3b1SJaegeuk Kim level = 1; 501e05df3b1SJaegeuk Kim goto got; 502e05df3b1SJaegeuk Kim } 503e05df3b1SJaegeuk Kim block -= direct_blks; 504e05df3b1SJaegeuk Kim if (block < indirect_blks) { 505e05df3b1SJaegeuk Kim offset[n++] = NODE_IND1_BLOCK; 506e05df3b1SJaegeuk Kim noffset[n] = 3; 507e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 508e05df3b1SJaegeuk Kim noffset[n] = 4 + offset[n - 1]; 50925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 510e05df3b1SJaegeuk Kim level = 2; 511e05df3b1SJaegeuk Kim goto got; 512e05df3b1SJaegeuk Kim } 513e05df3b1SJaegeuk Kim block -= indirect_blks; 514e05df3b1SJaegeuk Kim if (block < indirect_blks) { 515e05df3b1SJaegeuk Kim offset[n++] = NODE_IND2_BLOCK; 516e05df3b1SJaegeuk Kim noffset[n] = 4 + dptrs_per_blk; 517e05df3b1SJaegeuk Kim offset[n++] = block / direct_blks; 518e05df3b1SJaegeuk Kim noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; 51925c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 520e05df3b1SJaegeuk Kim level = 2; 521e05df3b1SJaegeuk Kim goto got; 522e05df3b1SJaegeuk Kim } 523e05df3b1SJaegeuk Kim block -= indirect_blks; 524e05df3b1SJaegeuk Kim if (block < dindirect_blks) { 525e05df3b1SJaegeuk Kim offset[n++] = NODE_DIND_BLOCK; 526e05df3b1SJaegeuk Kim noffset[n] = 5 + (dptrs_per_blk * 2); 527e05df3b1SJaegeuk Kim offset[n++] = block / indirect_blks; 528e05df3b1SJaegeuk Kim noffset[n] = 6 + (dptrs_per_blk * 2) + 529e05df3b1SJaegeuk Kim offset[n - 1] * (dptrs_per_blk + 1); 530e05df3b1SJaegeuk Kim offset[n++] = (block / direct_blks) % dptrs_per_blk; 531e05df3b1SJaegeuk Kim noffset[n] = 7 + (dptrs_per_blk * 2) + 532e05df3b1SJaegeuk Kim offset[n - 2] * (dptrs_per_blk + 1) + 533e05df3b1SJaegeuk Kim offset[n - 1]; 53425c0a6e5SNamjae Jeon offset[n] = block % direct_blks; 535e05df3b1SJaegeuk Kim level = 3; 536e05df3b1SJaegeuk Kim goto got; 537e05df3b1SJaegeuk Kim } else { 538e05df3b1SJaegeuk Kim BUG(); 539e05df3b1SJaegeuk Kim } 540e05df3b1SJaegeuk Kim got: 541e05df3b1SJaegeuk Kim return level; 542e05df3b1SJaegeuk Kim } 543e05df3b1SJaegeuk Kim 544e05df3b1SJaegeuk Kim /* 545e05df3b1SJaegeuk Kim * Caller should call f2fs_put_dnode(dn). 5464f4124d0SChao Yu * Also, it should grab and release a rwsem by calling f2fs_lock_op() and 5474f4124d0SChao Yu * f2fs_unlock_op() only if ro is not set RDONLY_NODE. 54839936837SJaegeuk Kim * In the case of RDONLY_NODE, we don't need to care about mutex. 549e05df3b1SJaegeuk Kim */ 550266e97a8SJaegeuk Kim int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) 551e05df3b1SJaegeuk Kim { 5524081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 553e05df3b1SJaegeuk Kim struct page *npage[4]; 554f1a3b98eSJaegeuk Kim struct page *parent = NULL; 555e05df3b1SJaegeuk Kim int offset[4]; 556e05df3b1SJaegeuk Kim unsigned int noffset[4]; 557e05df3b1SJaegeuk Kim nid_t nids[4]; 5583cf45747SChao Yu int level, i = 0; 559e05df3b1SJaegeuk Kim int err = 0; 560e05df3b1SJaegeuk Kim 56181ca7350SChao Yu level = get_node_path(dn->inode, index, offset, noffset); 562e05df3b1SJaegeuk Kim 563e05df3b1SJaegeuk Kim nids[0] = dn->inode->i_ino; 5641646cfacSJaegeuk Kim npage[0] = dn->inode_page; 5651646cfacSJaegeuk Kim 5661646cfacSJaegeuk Kim if (!npage[0]) { 567e05df3b1SJaegeuk Kim npage[0] = get_node_page(sbi, nids[0]); 568e05df3b1SJaegeuk Kim if (IS_ERR(npage[0])) 569e05df3b1SJaegeuk Kim return PTR_ERR(npage[0]); 5701646cfacSJaegeuk Kim } 571f1a3b98eSJaegeuk Kim 572f1a3b98eSJaegeuk Kim /* if inline_data is set, should not report any block indices */ 573f1a3b98eSJaegeuk Kim if (f2fs_has_inline_data(dn->inode) && index) { 57476629165SJaegeuk Kim err = -ENOENT; 575f1a3b98eSJaegeuk Kim f2fs_put_page(npage[0], 1); 576f1a3b98eSJaegeuk Kim goto release_out; 577f1a3b98eSJaegeuk Kim } 578f1a3b98eSJaegeuk Kim 579e05df3b1SJaegeuk Kim parent = npage[0]; 58052c2db3fSChangman Lee if (level != 0) 581e05df3b1SJaegeuk Kim nids[1] = get_nid(parent, offset[0], true); 582e05df3b1SJaegeuk Kim dn->inode_page = npage[0]; 583e05df3b1SJaegeuk Kim dn->inode_page_locked = true; 584e05df3b1SJaegeuk Kim 585e05df3b1SJaegeuk Kim /* get indirect or direct nodes */ 586e05df3b1SJaegeuk Kim for (i = 1; i <= level; i++) { 587e05df3b1SJaegeuk Kim bool done = false; 588e05df3b1SJaegeuk Kim 589266e97a8SJaegeuk Kim if (!nids[i] && mode == ALLOC_NODE) { 590e05df3b1SJaegeuk Kim /* alloc new node */ 591e05df3b1SJaegeuk Kim if (!alloc_nid(sbi, &(nids[i]))) { 592e05df3b1SJaegeuk Kim err = -ENOSPC; 593e05df3b1SJaegeuk Kim goto release_pages; 594e05df3b1SJaegeuk Kim } 595e05df3b1SJaegeuk Kim 596e05df3b1SJaegeuk Kim dn->nid = nids[i]; 5978ae8f162SJaegeuk Kim npage[i] = new_node_page(dn, noffset[i], NULL); 598e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 599e05df3b1SJaegeuk Kim alloc_nid_failed(sbi, nids[i]); 600e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 601e05df3b1SJaegeuk Kim goto release_pages; 602e05df3b1SJaegeuk Kim } 603e05df3b1SJaegeuk Kim 604e05df3b1SJaegeuk Kim set_nid(parent, offset[i - 1], nids[i], i == 1); 605e05df3b1SJaegeuk Kim alloc_nid_done(sbi, nids[i]); 606e05df3b1SJaegeuk Kim done = true; 607266e97a8SJaegeuk Kim } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { 608e05df3b1SJaegeuk Kim npage[i] = get_node_page_ra(parent, offset[i - 1]); 609e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 610e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 611e05df3b1SJaegeuk Kim goto release_pages; 612e05df3b1SJaegeuk Kim } 613e05df3b1SJaegeuk Kim done = true; 614e05df3b1SJaegeuk Kim } 615e05df3b1SJaegeuk Kim if (i == 1) { 616e05df3b1SJaegeuk Kim dn->inode_page_locked = false; 617e05df3b1SJaegeuk Kim unlock_page(parent); 618e05df3b1SJaegeuk Kim } else { 619e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 620e05df3b1SJaegeuk Kim } 621e05df3b1SJaegeuk Kim 622e05df3b1SJaegeuk Kim if (!done) { 623e05df3b1SJaegeuk Kim npage[i] = get_node_page(sbi, nids[i]); 624e05df3b1SJaegeuk Kim if (IS_ERR(npage[i])) { 625e05df3b1SJaegeuk Kim err = PTR_ERR(npage[i]); 626e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 627e05df3b1SJaegeuk Kim goto release_out; 628e05df3b1SJaegeuk Kim } 629e05df3b1SJaegeuk Kim } 630e05df3b1SJaegeuk Kim if (i < level) { 631e05df3b1SJaegeuk Kim parent = npage[i]; 632e05df3b1SJaegeuk Kim nids[i + 1] = get_nid(parent, offset[i], false); 633e05df3b1SJaegeuk Kim } 634e05df3b1SJaegeuk Kim } 635e05df3b1SJaegeuk Kim dn->nid = nids[level]; 636e05df3b1SJaegeuk Kim dn->ofs_in_node = offset[level]; 637e05df3b1SJaegeuk Kim dn->node_page = npage[level]; 638e05df3b1SJaegeuk Kim dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); 639e05df3b1SJaegeuk Kim return 0; 640e05df3b1SJaegeuk Kim 641e05df3b1SJaegeuk Kim release_pages: 642e05df3b1SJaegeuk Kim f2fs_put_page(parent, 1); 643e05df3b1SJaegeuk Kim if (i > 1) 644e05df3b1SJaegeuk Kim f2fs_put_page(npage[0], 0); 645e05df3b1SJaegeuk Kim release_out: 646e05df3b1SJaegeuk Kim dn->inode_page = NULL; 647e05df3b1SJaegeuk Kim dn->node_page = NULL; 6483cf45747SChao Yu if (err == -ENOENT) { 6493cf45747SChao Yu dn->cur_level = i; 6503cf45747SChao Yu dn->max_level = level; 6510a2aa8fbSJaegeuk Kim dn->ofs_in_node = offset[level]; 6523cf45747SChao Yu } 653e05df3b1SJaegeuk Kim return err; 654e05df3b1SJaegeuk Kim } 655e05df3b1SJaegeuk Kim 656e05df3b1SJaegeuk Kim static void truncate_node(struct dnode_of_data *dn) 657e05df3b1SJaegeuk Kim { 6584081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 659e05df3b1SJaegeuk Kim struct node_info ni; 660e05df3b1SJaegeuk Kim 661e05df3b1SJaegeuk Kim get_node_info(sbi, dn->nid, &ni); 66271e9fec5SJaegeuk Kim if (dn->inode->i_blocks == 0) { 6639850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); 66471e9fec5SJaegeuk Kim goto invalidate; 66571e9fec5SJaegeuk Kim } 6669850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 667e05df3b1SJaegeuk Kim 668e05df3b1SJaegeuk Kim /* Deallocate node address */ 66971e9fec5SJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 670ef86d709SGu Zheng dec_valid_node_count(sbi, dn->inode); 671479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 672e05df3b1SJaegeuk Kim 673e05df3b1SJaegeuk Kim if (dn->nid == dn->inode->i_ino) { 674e05df3b1SJaegeuk Kim remove_orphan_inode(sbi, dn->nid); 675e05df3b1SJaegeuk Kim dec_valid_inode_count(sbi); 6760f18b462SJaegeuk Kim f2fs_inode_synced(dn->inode); 677e05df3b1SJaegeuk Kim } 67871e9fec5SJaegeuk Kim invalidate: 679e05df3b1SJaegeuk Kim clear_node_page_dirty(dn->node_page); 680caf0047eSChao Yu set_sbi_flag(sbi, SBI_IS_DIRTY); 681e05df3b1SJaegeuk Kim 682e05df3b1SJaegeuk Kim f2fs_put_page(dn->node_page, 1); 683bf39c00aSJaegeuk Kim 684bf39c00aSJaegeuk Kim invalidate_mapping_pages(NODE_MAPPING(sbi), 685bf39c00aSJaegeuk Kim dn->node_page->index, dn->node_page->index); 686bf39c00aSJaegeuk Kim 687e05df3b1SJaegeuk Kim dn->node_page = NULL; 68851dd6249SNamjae Jeon trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); 689e05df3b1SJaegeuk Kim } 690e05df3b1SJaegeuk Kim 691e05df3b1SJaegeuk Kim static int truncate_dnode(struct dnode_of_data *dn) 692e05df3b1SJaegeuk Kim { 693e05df3b1SJaegeuk Kim struct page *page; 694e05df3b1SJaegeuk Kim 695e05df3b1SJaegeuk Kim if (dn->nid == 0) 696e05df3b1SJaegeuk Kim return 1; 697e05df3b1SJaegeuk Kim 698e05df3b1SJaegeuk Kim /* get direct node */ 6994081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 700e05df3b1SJaegeuk Kim if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) 701e05df3b1SJaegeuk Kim return 1; 702e05df3b1SJaegeuk Kim else if (IS_ERR(page)) 703e05df3b1SJaegeuk Kim return PTR_ERR(page); 704e05df3b1SJaegeuk Kim 705e05df3b1SJaegeuk Kim /* Make dnode_of_data for parameter */ 706e05df3b1SJaegeuk Kim dn->node_page = page; 707e05df3b1SJaegeuk Kim dn->ofs_in_node = 0; 708e05df3b1SJaegeuk Kim truncate_data_blocks(dn); 709e05df3b1SJaegeuk Kim truncate_node(dn); 710e05df3b1SJaegeuk Kim return 1; 711e05df3b1SJaegeuk Kim } 712e05df3b1SJaegeuk Kim 713e05df3b1SJaegeuk Kim static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, 714e05df3b1SJaegeuk Kim int ofs, int depth) 715e05df3b1SJaegeuk Kim { 716e05df3b1SJaegeuk Kim struct dnode_of_data rdn = *dn; 717e05df3b1SJaegeuk Kim struct page *page; 718e05df3b1SJaegeuk Kim struct f2fs_node *rn; 719e05df3b1SJaegeuk Kim nid_t child_nid; 720e05df3b1SJaegeuk Kim unsigned int child_nofs; 721e05df3b1SJaegeuk Kim int freed = 0; 722e05df3b1SJaegeuk Kim int i, ret; 723e05df3b1SJaegeuk Kim 724e05df3b1SJaegeuk Kim if (dn->nid == 0) 725e05df3b1SJaegeuk Kim return NIDS_PER_BLOCK + 1; 726e05df3b1SJaegeuk Kim 72751dd6249SNamjae Jeon trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); 72851dd6249SNamjae Jeon 7294081363fSJaegeuk Kim page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); 73051dd6249SNamjae Jeon if (IS_ERR(page)) { 73151dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); 732e05df3b1SJaegeuk Kim return PTR_ERR(page); 73351dd6249SNamjae Jeon } 734e05df3b1SJaegeuk Kim 73579344efbSJaegeuk Kim ra_node_pages(page, ofs, NIDS_PER_BLOCK); 73679344efbSJaegeuk Kim 73745590710SGu Zheng rn = F2FS_NODE(page); 738e05df3b1SJaegeuk Kim if (depth < 3) { 739e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { 740e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 741e05df3b1SJaegeuk Kim if (child_nid == 0) 742e05df3b1SJaegeuk Kim continue; 743e05df3b1SJaegeuk Kim rdn.nid = child_nid; 744e05df3b1SJaegeuk Kim ret = truncate_dnode(&rdn); 745e05df3b1SJaegeuk Kim if (ret < 0) 746e05df3b1SJaegeuk Kim goto out_err; 74712719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 74893bae099SJaegeuk Kim dn->node_changed = true; 749e05df3b1SJaegeuk Kim } 750e05df3b1SJaegeuk Kim } else { 751e05df3b1SJaegeuk Kim child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; 752e05df3b1SJaegeuk Kim for (i = ofs; i < NIDS_PER_BLOCK; i++) { 753e05df3b1SJaegeuk Kim child_nid = le32_to_cpu(rn->in.nid[i]); 754e05df3b1SJaegeuk Kim if (child_nid == 0) { 755e05df3b1SJaegeuk Kim child_nofs += NIDS_PER_BLOCK + 1; 756e05df3b1SJaegeuk Kim continue; 757e05df3b1SJaegeuk Kim } 758e05df3b1SJaegeuk Kim rdn.nid = child_nid; 759e05df3b1SJaegeuk Kim ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); 760e05df3b1SJaegeuk Kim if (ret == (NIDS_PER_BLOCK + 1)) { 76112719ae1SJaegeuk Kim if (set_nid(page, i, 0, false)) 76293bae099SJaegeuk Kim dn->node_changed = true; 763e05df3b1SJaegeuk Kim child_nofs += ret; 764e05df3b1SJaegeuk Kim } else if (ret < 0 && ret != -ENOENT) { 765e05df3b1SJaegeuk Kim goto out_err; 766e05df3b1SJaegeuk Kim } 767e05df3b1SJaegeuk Kim } 768e05df3b1SJaegeuk Kim freed = child_nofs; 769e05df3b1SJaegeuk Kim } 770e05df3b1SJaegeuk Kim 771e05df3b1SJaegeuk Kim if (!ofs) { 772e05df3b1SJaegeuk Kim /* remove current indirect node */ 773e05df3b1SJaegeuk Kim dn->node_page = page; 774e05df3b1SJaegeuk Kim truncate_node(dn); 775e05df3b1SJaegeuk Kim freed++; 776e05df3b1SJaegeuk Kim } else { 777e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 778e05df3b1SJaegeuk Kim } 77951dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, freed); 780e05df3b1SJaegeuk Kim return freed; 781e05df3b1SJaegeuk Kim 782e05df3b1SJaegeuk Kim out_err: 783e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 78451dd6249SNamjae Jeon trace_f2fs_truncate_nodes_exit(dn->inode, ret); 785e05df3b1SJaegeuk Kim return ret; 786e05df3b1SJaegeuk Kim } 787e05df3b1SJaegeuk Kim 788e05df3b1SJaegeuk Kim static int truncate_partial_nodes(struct dnode_of_data *dn, 789e05df3b1SJaegeuk Kim struct f2fs_inode *ri, int *offset, int depth) 790e05df3b1SJaegeuk Kim { 791e05df3b1SJaegeuk Kim struct page *pages[2]; 792e05df3b1SJaegeuk Kim nid_t nid[3]; 793e05df3b1SJaegeuk Kim nid_t child_nid; 794e05df3b1SJaegeuk Kim int err = 0; 795e05df3b1SJaegeuk Kim int i; 796e05df3b1SJaegeuk Kim int idx = depth - 2; 797e05df3b1SJaegeuk Kim 798e05df3b1SJaegeuk Kim nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 799e05df3b1SJaegeuk Kim if (!nid[0]) 800e05df3b1SJaegeuk Kim return 0; 801e05df3b1SJaegeuk Kim 802e05df3b1SJaegeuk Kim /* get indirect nodes in the path */ 803a225dca3Sshifei10.ge for (i = 0; i < idx + 1; i++) { 804e1c42045Sarter97 /* reference count'll be increased */ 8054081363fSJaegeuk Kim pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); 806e05df3b1SJaegeuk Kim if (IS_ERR(pages[i])) { 807e05df3b1SJaegeuk Kim err = PTR_ERR(pages[i]); 808a225dca3Sshifei10.ge idx = i - 1; 809e05df3b1SJaegeuk Kim goto fail; 810e05df3b1SJaegeuk Kim } 811e05df3b1SJaegeuk Kim nid[i + 1] = get_nid(pages[i], offset[i + 1], false); 812e05df3b1SJaegeuk Kim } 813e05df3b1SJaegeuk Kim 81479344efbSJaegeuk Kim ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); 81579344efbSJaegeuk Kim 816e05df3b1SJaegeuk Kim /* free direct nodes linked to a partial indirect node */ 817a225dca3Sshifei10.ge for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { 818e05df3b1SJaegeuk Kim child_nid = get_nid(pages[idx], i, false); 819e05df3b1SJaegeuk Kim if (!child_nid) 820e05df3b1SJaegeuk Kim continue; 821e05df3b1SJaegeuk Kim dn->nid = child_nid; 822e05df3b1SJaegeuk Kim err = truncate_dnode(dn); 823e05df3b1SJaegeuk Kim if (err < 0) 824e05df3b1SJaegeuk Kim goto fail; 82512719ae1SJaegeuk Kim if (set_nid(pages[idx], i, 0, false)) 82693bae099SJaegeuk Kim dn->node_changed = true; 827e05df3b1SJaegeuk Kim } 828e05df3b1SJaegeuk Kim 829a225dca3Sshifei10.ge if (offset[idx + 1] == 0) { 830e05df3b1SJaegeuk Kim dn->node_page = pages[idx]; 831e05df3b1SJaegeuk Kim dn->nid = nid[idx]; 832e05df3b1SJaegeuk Kim truncate_node(dn); 833e05df3b1SJaegeuk Kim } else { 834e05df3b1SJaegeuk Kim f2fs_put_page(pages[idx], 1); 835e05df3b1SJaegeuk Kim } 836e05df3b1SJaegeuk Kim offset[idx]++; 837a225dca3Sshifei10.ge offset[idx + 1] = 0; 838a225dca3Sshifei10.ge idx--; 839e05df3b1SJaegeuk Kim fail: 840a225dca3Sshifei10.ge for (i = idx; i >= 0; i--) 841e05df3b1SJaegeuk Kim f2fs_put_page(pages[i], 1); 84251dd6249SNamjae Jeon 84351dd6249SNamjae Jeon trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); 84451dd6249SNamjae Jeon 845e05df3b1SJaegeuk Kim return err; 846e05df3b1SJaegeuk Kim } 847e05df3b1SJaegeuk Kim 8480a8165d7SJaegeuk Kim /* 849e05df3b1SJaegeuk Kim * All the block addresses of data and nodes should be nullified. 850e05df3b1SJaegeuk Kim */ 851e05df3b1SJaegeuk Kim int truncate_inode_blocks(struct inode *inode, pgoff_t from) 852e05df3b1SJaegeuk Kim { 8534081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 854e05df3b1SJaegeuk Kim int err = 0, cont = 1; 855e05df3b1SJaegeuk Kim int level, offset[4], noffset[4]; 8567dd690c8SJaegeuk Kim unsigned int nofs = 0; 85758bfaf44SJaegeuk Kim struct f2fs_inode *ri; 858e05df3b1SJaegeuk Kim struct dnode_of_data dn; 859e05df3b1SJaegeuk Kim struct page *page; 860e05df3b1SJaegeuk Kim 86151dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_enter(inode, from); 86251dd6249SNamjae Jeon 86381ca7350SChao Yu level = get_node_path(inode, from, offset, noffset); 864ff373558SJaegeuk Kim 865e05df3b1SJaegeuk Kim page = get_node_page(sbi, inode->i_ino); 86651dd6249SNamjae Jeon if (IS_ERR(page)) { 86751dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); 868e05df3b1SJaegeuk Kim return PTR_ERR(page); 86951dd6249SNamjae Jeon } 870e05df3b1SJaegeuk Kim 871e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, page, NULL, 0); 872e05df3b1SJaegeuk Kim unlock_page(page); 873e05df3b1SJaegeuk Kim 87458bfaf44SJaegeuk Kim ri = F2FS_INODE(page); 875e05df3b1SJaegeuk Kim switch (level) { 876e05df3b1SJaegeuk Kim case 0: 877e05df3b1SJaegeuk Kim case 1: 878e05df3b1SJaegeuk Kim nofs = noffset[1]; 879e05df3b1SJaegeuk Kim break; 880e05df3b1SJaegeuk Kim case 2: 881e05df3b1SJaegeuk Kim nofs = noffset[1]; 882e05df3b1SJaegeuk Kim if (!offset[level - 1]) 883e05df3b1SJaegeuk Kim goto skip_partial; 88458bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 885e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 886e05df3b1SJaegeuk Kim goto fail; 887e05df3b1SJaegeuk Kim nofs += 1 + NIDS_PER_BLOCK; 888e05df3b1SJaegeuk Kim break; 889e05df3b1SJaegeuk Kim case 3: 890e05df3b1SJaegeuk Kim nofs = 5 + 2 * NIDS_PER_BLOCK; 891e05df3b1SJaegeuk Kim if (!offset[level - 1]) 892e05df3b1SJaegeuk Kim goto skip_partial; 89358bfaf44SJaegeuk Kim err = truncate_partial_nodes(&dn, ri, offset, level); 894e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 895e05df3b1SJaegeuk Kim goto fail; 896e05df3b1SJaegeuk Kim break; 897e05df3b1SJaegeuk Kim default: 898e05df3b1SJaegeuk Kim BUG(); 899e05df3b1SJaegeuk Kim } 900e05df3b1SJaegeuk Kim 901e05df3b1SJaegeuk Kim skip_partial: 902e05df3b1SJaegeuk Kim while (cont) { 90358bfaf44SJaegeuk Kim dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); 904e05df3b1SJaegeuk Kim switch (offset[0]) { 905e05df3b1SJaegeuk Kim case NODE_DIR1_BLOCK: 906e05df3b1SJaegeuk Kim case NODE_DIR2_BLOCK: 907e05df3b1SJaegeuk Kim err = truncate_dnode(&dn); 908e05df3b1SJaegeuk Kim break; 909e05df3b1SJaegeuk Kim 910e05df3b1SJaegeuk Kim case NODE_IND1_BLOCK: 911e05df3b1SJaegeuk Kim case NODE_IND2_BLOCK: 912e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 2); 913e05df3b1SJaegeuk Kim break; 914e05df3b1SJaegeuk Kim 915e05df3b1SJaegeuk Kim case NODE_DIND_BLOCK: 916e05df3b1SJaegeuk Kim err = truncate_nodes(&dn, nofs, offset[1], 3); 917e05df3b1SJaegeuk Kim cont = 0; 918e05df3b1SJaegeuk Kim break; 919e05df3b1SJaegeuk Kim 920e05df3b1SJaegeuk Kim default: 921e05df3b1SJaegeuk Kim BUG(); 922e05df3b1SJaegeuk Kim } 923e05df3b1SJaegeuk Kim if (err < 0 && err != -ENOENT) 924e05df3b1SJaegeuk Kim goto fail; 925e05df3b1SJaegeuk Kim if (offset[1] == 0 && 92658bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { 927e05df3b1SJaegeuk Kim lock_page(page); 928ff373558SJaegeuk Kim BUG_ON(page->mapping != NODE_MAPPING(sbi)); 929fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 93058bfaf44SJaegeuk Kim ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; 931e05df3b1SJaegeuk Kim set_page_dirty(page); 932e05df3b1SJaegeuk Kim unlock_page(page); 933e05df3b1SJaegeuk Kim } 934e05df3b1SJaegeuk Kim offset[1] = 0; 935e05df3b1SJaegeuk Kim offset[0]++; 936e05df3b1SJaegeuk Kim nofs += err; 937e05df3b1SJaegeuk Kim } 938e05df3b1SJaegeuk Kim fail: 939e05df3b1SJaegeuk Kim f2fs_put_page(page, 0); 94051dd6249SNamjae Jeon trace_f2fs_truncate_inode_blocks_exit(inode, err); 941e05df3b1SJaegeuk Kim return err > 0 ? 0 : err; 942e05df3b1SJaegeuk Kim } 943e05df3b1SJaegeuk Kim 9444f16fb0fSJaegeuk Kim int truncate_xattr_node(struct inode *inode, struct page *page) 9454f16fb0fSJaegeuk Kim { 9464081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 9474f16fb0fSJaegeuk Kim nid_t nid = F2FS_I(inode)->i_xattr_nid; 9484f16fb0fSJaegeuk Kim struct dnode_of_data dn; 9494f16fb0fSJaegeuk Kim struct page *npage; 9504f16fb0fSJaegeuk Kim 9514f16fb0fSJaegeuk Kim if (!nid) 9524f16fb0fSJaegeuk Kim return 0; 9534f16fb0fSJaegeuk Kim 9544f16fb0fSJaegeuk Kim npage = get_node_page(sbi, nid); 9554f16fb0fSJaegeuk Kim if (IS_ERR(npage)) 9564f16fb0fSJaegeuk Kim return PTR_ERR(npage); 9574f16fb0fSJaegeuk Kim 958205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, 0); 95965985d93SJaegeuk Kim 96065985d93SJaegeuk Kim /* need to do checkpoint during fsync */ 96165985d93SJaegeuk Kim F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); 96265985d93SJaegeuk Kim 9634f16fb0fSJaegeuk Kim set_new_dnode(&dn, inode, page, npage, nid); 9644f16fb0fSJaegeuk Kim 9654f16fb0fSJaegeuk Kim if (page) 96601d2d1aaSChao Yu dn.inode_page_locked = true; 9674f16fb0fSJaegeuk Kim truncate_node(&dn); 9684f16fb0fSJaegeuk Kim return 0; 9694f16fb0fSJaegeuk Kim } 9704f16fb0fSJaegeuk Kim 97139936837SJaegeuk Kim /* 9724f4124d0SChao Yu * Caller should grab and release a rwsem by calling f2fs_lock_op() and 9734f4124d0SChao Yu * f2fs_unlock_op(). 97439936837SJaegeuk Kim */ 97513ec7297SChao Yu int remove_inode_page(struct inode *inode) 976e05df3b1SJaegeuk Kim { 977e05df3b1SJaegeuk Kim struct dnode_of_data dn; 97813ec7297SChao Yu int err; 979e05df3b1SJaegeuk Kim 980c2e69583SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 98113ec7297SChao Yu err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); 98213ec7297SChao Yu if (err) 98313ec7297SChao Yu return err; 984e05df3b1SJaegeuk Kim 98513ec7297SChao Yu err = truncate_xattr_node(inode, dn.inode_page); 98613ec7297SChao Yu if (err) { 987c2e69583SJaegeuk Kim f2fs_put_dnode(&dn); 98813ec7297SChao Yu return err; 989e05df3b1SJaegeuk Kim } 990c2e69583SJaegeuk Kim 991c2e69583SJaegeuk Kim /* remove potential inline_data blocks */ 992c2e69583SJaegeuk Kim if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 993c2e69583SJaegeuk Kim S_ISLNK(inode->i_mode)) 994c2e69583SJaegeuk Kim truncate_data_blocks_range(&dn, 1); 995c2e69583SJaegeuk Kim 996e1c42045Sarter97 /* 0 is possible, after f2fs_new_inode() has failed */ 9979850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), 9989850cf4aSJaegeuk Kim inode->i_blocks != 0 && inode->i_blocks != 1); 999c2e69583SJaegeuk Kim 1000c2e69583SJaegeuk Kim /* will put inode & node pages */ 1001e05df3b1SJaegeuk Kim truncate_node(&dn); 100213ec7297SChao Yu return 0; 1003e05df3b1SJaegeuk Kim } 1004e05df3b1SJaegeuk Kim 1005a014e037SJaegeuk Kim struct page *new_inode_page(struct inode *inode) 1006e05df3b1SJaegeuk Kim { 1007e05df3b1SJaegeuk Kim struct dnode_of_data dn; 1008e05df3b1SJaegeuk Kim 1009e05df3b1SJaegeuk Kim /* allocate inode page for new inode */ 1010e05df3b1SJaegeuk Kim set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); 101144a83ff6SJaegeuk Kim 101244a83ff6SJaegeuk Kim /* caller should f2fs_put_page(page, 1); */ 10138ae8f162SJaegeuk Kim return new_node_page(&dn, 0, NULL); 1014e05df3b1SJaegeuk Kim } 1015e05df3b1SJaegeuk Kim 10168ae8f162SJaegeuk Kim struct page *new_node_page(struct dnode_of_data *dn, 10178ae8f162SJaegeuk Kim unsigned int ofs, struct page *ipage) 1018e05df3b1SJaegeuk Kim { 10194081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 1020e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 1021e05df3b1SJaegeuk Kim struct page *page; 1022e05df3b1SJaegeuk Kim int err; 1023e05df3b1SJaegeuk Kim 102491942321SJaegeuk Kim if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) 1025e05df3b1SJaegeuk Kim return ERR_PTR(-EPERM); 1026e05df3b1SJaegeuk Kim 1027300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); 1028e05df3b1SJaegeuk Kim if (!page) 1029e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1030e05df3b1SJaegeuk Kim 10316bacf52fSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { 10329c02740cSJaegeuk Kim err = -ENOSPC; 10339c02740cSJaegeuk Kim goto fail; 10349c02740cSJaegeuk Kim } 1035e05df3b1SJaegeuk Kim 10369c02740cSJaegeuk Kim get_node_info(sbi, dn->nid, &old_ni); 1037e05df3b1SJaegeuk Kim 1038e05df3b1SJaegeuk Kim /* Reinitialize old_ni with new node page */ 10399850cf4aSJaegeuk Kim f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); 1040e05df3b1SJaegeuk Kim new_ni = old_ni; 1041e05df3b1SJaegeuk Kim new_ni.ino = dn->inode->i_ino; 1042479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 10439c02740cSJaegeuk Kim 1044fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 10459c02740cSJaegeuk Kim fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); 1046398b1ac5SJaegeuk Kim set_cold_node(dn->inode, page); 1047237c0790SJaegeuk Kim if (!PageUptodate(page)) 10489c02740cSJaegeuk Kim SetPageUptodate(page); 104912719ae1SJaegeuk Kim if (set_page_dirty(page)) 105012719ae1SJaegeuk Kim dn->node_changed = true; 1051e05df3b1SJaegeuk Kim 10524bc8e9bcSChao Yu if (f2fs_has_xattr_block(ofs)) 1053205b9822SJaegeuk Kim f2fs_i_xnid_write(dn->inode, dn->nid); 1054479bd73aSJaegeuk Kim 1055e05df3b1SJaegeuk Kim if (ofs == 0) 1056e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 1057e05df3b1SJaegeuk Kim return page; 1058e05df3b1SJaegeuk Kim 1059e05df3b1SJaegeuk Kim fail: 106071e9fec5SJaegeuk Kim clear_node_page_dirty(page); 1061e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1062e05df3b1SJaegeuk Kim return ERR_PTR(err); 1063e05df3b1SJaegeuk Kim } 1064e05df3b1SJaegeuk Kim 106556ae674cSJaegeuk Kim /* 106656ae674cSJaegeuk Kim * Caller should do after getting the following values. 106756ae674cSJaegeuk Kim * 0: f2fs_put_page(page, 0) 106886531d6bSJaegeuk Kim * LOCKED_PAGE or error: f2fs_put_page(page, 1) 106956ae674cSJaegeuk Kim */ 107004d328deSMike Christie static int read_node_page(struct page *page, int op_flags) 1071e05df3b1SJaegeuk Kim { 10724081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(page); 1073e05df3b1SJaegeuk Kim struct node_info ni; 1074cf04e8ebSJaegeuk Kim struct f2fs_io_info fio = { 107505ca3632SJaegeuk Kim .sbi = sbi, 1076cf04e8ebSJaegeuk Kim .type = NODE, 107704d328deSMike Christie .op = REQ_OP_READ, 107804d328deSMike Christie .op_flags = op_flags, 107905ca3632SJaegeuk Kim .page = page, 10804375a336SJaegeuk Kim .encrypted_page = NULL, 1081cf04e8ebSJaegeuk Kim }; 1082e05df3b1SJaegeuk Kim 10833bdad3c7SJaegeuk Kim if (PageUptodate(page)) 10843bdad3c7SJaegeuk Kim return LOCKED_PAGE; 10853bdad3c7SJaegeuk 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 10937a9d7548SChao Yu fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; 109405ca3632SJaegeuk Kim return f2fs_submit_page_bio(&fio); 1095e05df3b1SJaegeuk Kim } 1096e05df3b1SJaegeuk Kim 10970a8165d7SJaegeuk Kim /* 1098e05df3b1SJaegeuk Kim * Readahead a node page 1099e05df3b1SJaegeuk Kim */ 1100e05df3b1SJaegeuk Kim void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) 1101e05df3b1SJaegeuk Kim { 1102e05df3b1SJaegeuk Kim struct page *apage; 110356ae674cSJaegeuk Kim int err; 1104e05df3b1SJaegeuk Kim 1105e8458725SChao Yu if (!nid) 1106e8458725SChao Yu return; 1107e8458725SChao Yu f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1108e8458725SChao Yu 1109999270deSFan Li rcu_read_lock(); 1110999270deSFan Li apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); 1111999270deSFan Li rcu_read_unlock(); 1112999270deSFan Li if (apage) 1113393ff91fSJaegeuk Kim return; 1114e05df3b1SJaegeuk Kim 1115300e129cSJaegeuk Kim apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1116e05df3b1SJaegeuk Kim if (!apage) 1117e05df3b1SJaegeuk Kim return; 1118e05df3b1SJaegeuk Kim 111970246286SChristoph Hellwig err = read_node_page(apage, REQ_RAHEAD); 112086531d6bSJaegeuk Kim f2fs_put_page(apage, err ? 1 : 0); 1121e05df3b1SJaegeuk Kim } 1122e05df3b1SJaegeuk Kim 112317a0ee55SJaegeuk Kim static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, 11240e022ea8SChao Yu struct page *parent, int start) 1125e05df3b1SJaegeuk Kim { 112656ae674cSJaegeuk Kim struct page *page; 112756ae674cSJaegeuk Kim int err; 11284aa69d56SJaegeuk Kim 11294aa69d56SJaegeuk Kim if (!nid) 11304aa69d56SJaegeuk Kim return ERR_PTR(-ENOENT); 11314aa69d56SJaegeuk Kim f2fs_bug_on(sbi, check_nid_range(sbi, nid)); 1132afcb7ca0SJaegeuk Kim repeat: 1133300e129cSJaegeuk Kim page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); 1134e05df3b1SJaegeuk Kim if (!page) 1135e05df3b1SJaegeuk Kim return ERR_PTR(-ENOMEM); 1136e05df3b1SJaegeuk Kim 1137e05df3b1SJaegeuk Kim err = read_node_page(page, READ_SYNC); 113886531d6bSJaegeuk Kim if (err < 0) { 113986531d6bSJaegeuk Kim f2fs_put_page(page, 1); 1140e05df3b1SJaegeuk Kim return ERR_PTR(err); 1141e1c51b9fSChao Yu } else if (err == LOCKED_PAGE) { 1142e1c51b9fSChao Yu goto page_hit; 114386531d6bSJaegeuk Kim } 1144aaf96075SJaegeuk Kim 11450e022ea8SChao Yu if (parent) 114679344efbSJaegeuk Kim ra_node_pages(parent, start + 1, MAX_RA_NODE); 11470e022ea8SChao Yu 1148e1c51b9fSChao Yu lock_page(page); 1149e1c51b9fSChao Yu 11504ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1151afcb7ca0SJaegeuk Kim f2fs_put_page(page, 1); 1152afcb7ca0SJaegeuk Kim goto repeat; 1153afcb7ca0SJaegeuk Kim } 11541563ac75SChao Yu 11551563ac75SChao Yu if (unlikely(!PageUptodate(page))) 11561563ac75SChao Yu goto out_err; 1157e1c51b9fSChao Yu page_hit: 11580c9df7fbSYunlong Song if(unlikely(nid != nid_of_node(page))) { 11590c9df7fbSYunlong Song f2fs_bug_on(sbi, 1); 11600c9df7fbSYunlong Song ClearPageUptodate(page); 11610c9df7fbSYunlong Song out_err: 11620c9df7fbSYunlong Song f2fs_put_page(page, 1); 11630c9df7fbSYunlong Song return ERR_PTR(-EIO); 11640c9df7fbSYunlong Song } 1165e05df3b1SJaegeuk Kim return page; 1166e05df3b1SJaegeuk Kim } 1167e05df3b1SJaegeuk Kim 11680e022ea8SChao Yu struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 11690e022ea8SChao Yu { 11700e022ea8SChao Yu return __get_node_page(sbi, nid, NULL, 0); 11710e022ea8SChao Yu } 11720e022ea8SChao Yu 1173e05df3b1SJaegeuk Kim struct page *get_node_page_ra(struct page *parent, int start) 1174e05df3b1SJaegeuk Kim { 11754081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_P_SB(parent); 11760e022ea8SChao Yu nid_t nid = get_nid(parent, start, false); 1177e05df3b1SJaegeuk Kim 11780e022ea8SChao Yu return __get_node_page(sbi, nid, parent, start); 1179e05df3b1SJaegeuk Kim } 1180e05df3b1SJaegeuk Kim 11812049d4fcSJaegeuk Kim static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) 11822049d4fcSJaegeuk Kim { 11832049d4fcSJaegeuk Kim struct inode *inode; 11842049d4fcSJaegeuk Kim struct page *page; 11850f3311a8SChao Yu int ret; 11862049d4fcSJaegeuk Kim 11872049d4fcSJaegeuk Kim /* should flush inline_data before evict_inode */ 11882049d4fcSJaegeuk Kim inode = ilookup(sbi->sb, ino); 11892049d4fcSJaegeuk Kim if (!inode) 11902049d4fcSJaegeuk Kim return; 11912049d4fcSJaegeuk Kim 11924a6de50dSJaegeuk Kim page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); 11932049d4fcSJaegeuk Kim if (!page) 11942049d4fcSJaegeuk Kim goto iput_out; 11952049d4fcSJaegeuk Kim 11962049d4fcSJaegeuk Kim if (!PageUptodate(page)) 11972049d4fcSJaegeuk Kim goto page_out; 11982049d4fcSJaegeuk Kim 11992049d4fcSJaegeuk Kim if (!PageDirty(page)) 12002049d4fcSJaegeuk Kim goto page_out; 12012049d4fcSJaegeuk Kim 12022049d4fcSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 12032049d4fcSJaegeuk Kim goto page_out; 12042049d4fcSJaegeuk Kim 12050f3311a8SChao Yu ret = f2fs_write_inline_data(inode, page); 12062049d4fcSJaegeuk Kim inode_dec_dirty_pages(inode); 12070f3311a8SChao Yu if (ret) 12082049d4fcSJaegeuk Kim set_page_dirty(page); 12092049d4fcSJaegeuk Kim page_out: 12104a6de50dSJaegeuk Kim f2fs_put_page(page, 1); 12112049d4fcSJaegeuk Kim iput_out: 12122049d4fcSJaegeuk Kim iput(inode); 12132049d4fcSJaegeuk Kim } 12142049d4fcSJaegeuk Kim 1215da011cc0SChao Yu void move_node_page(struct page *node_page, int gc_type) 1216da011cc0SChao Yu { 1217da011cc0SChao Yu if (gc_type == FG_GC) { 1218da011cc0SChao Yu struct f2fs_sb_info *sbi = F2FS_P_SB(node_page); 1219da011cc0SChao Yu struct writeback_control wbc = { 1220da011cc0SChao Yu .sync_mode = WB_SYNC_ALL, 1221da011cc0SChao Yu .nr_to_write = 1, 1222da011cc0SChao Yu .for_reclaim = 0, 1223da011cc0SChao Yu }; 1224da011cc0SChao Yu 1225da011cc0SChao Yu set_page_dirty(node_page); 1226da011cc0SChao Yu f2fs_wait_on_page_writeback(node_page, NODE, true); 1227da011cc0SChao Yu 1228da011cc0SChao Yu f2fs_bug_on(sbi, PageWriteback(node_page)); 1229da011cc0SChao Yu if (!clear_page_dirty_for_io(node_page)) 1230da011cc0SChao Yu goto out_page; 1231da011cc0SChao Yu 1232da011cc0SChao Yu if (NODE_MAPPING(sbi)->a_ops->writepage(node_page, &wbc)) 1233da011cc0SChao Yu unlock_page(node_page); 1234da011cc0SChao Yu goto release_page; 1235da011cc0SChao Yu } else { 1236da011cc0SChao Yu /* set page dirty and write it */ 1237da011cc0SChao Yu if (!PageWriteback(node_page)) 1238da011cc0SChao Yu set_page_dirty(node_page); 1239da011cc0SChao Yu } 1240da011cc0SChao Yu out_page: 1241da011cc0SChao Yu unlock_page(node_page); 1242da011cc0SChao Yu release_page: 1243da011cc0SChao Yu f2fs_put_page(node_page, 0); 1244da011cc0SChao Yu } 1245da011cc0SChao Yu 1246608514deSJaegeuk Kim static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) 1247e05df3b1SJaegeuk Kim { 1248e05df3b1SJaegeuk Kim pgoff_t index, end; 1249e05df3b1SJaegeuk Kim struct pagevec pvec; 1250608514deSJaegeuk Kim struct page *last_page = NULL; 125152681375SJaegeuk Kim 125252681375SJaegeuk Kim pagevec_init(&pvec, 0); 125352681375SJaegeuk Kim index = 0; 125452681375SJaegeuk Kim end = ULONG_MAX; 125552681375SJaegeuk Kim 125652681375SJaegeuk Kim while (index <= end) { 125752681375SJaegeuk Kim int i, nr_pages; 125852681375SJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 125952681375SJaegeuk Kim PAGECACHE_TAG_DIRTY, 126052681375SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 126152681375SJaegeuk Kim if (nr_pages == 0) 126252681375SJaegeuk Kim break; 126352681375SJaegeuk Kim 126452681375SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 126552681375SJaegeuk Kim struct page *page = pvec.pages[i]; 126652681375SJaegeuk Kim 126752681375SJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1268608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 126952681375SJaegeuk Kim pagevec_release(&pvec); 1270608514deSJaegeuk Kim return ERR_PTR(-EIO); 127152681375SJaegeuk Kim } 127252681375SJaegeuk Kim 127352681375SJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 127452681375SJaegeuk Kim continue; 127552681375SJaegeuk Kim if (ino_of_node(page) != ino) 127652681375SJaegeuk Kim continue; 127752681375SJaegeuk Kim 127852681375SJaegeuk Kim lock_page(page); 127952681375SJaegeuk Kim 128052681375SJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 128152681375SJaegeuk Kim continue_unlock: 128252681375SJaegeuk Kim unlock_page(page); 128352681375SJaegeuk Kim continue; 128452681375SJaegeuk Kim } 128552681375SJaegeuk Kim if (ino_of_node(page) != ino) 128652681375SJaegeuk Kim goto continue_unlock; 128752681375SJaegeuk Kim 128852681375SJaegeuk Kim if (!PageDirty(page)) { 128952681375SJaegeuk Kim /* someone wrote it for us */ 129052681375SJaegeuk Kim goto continue_unlock; 129152681375SJaegeuk Kim } 129252681375SJaegeuk Kim 1293608514deSJaegeuk Kim if (last_page) 1294608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1295608514deSJaegeuk Kim 1296608514deSJaegeuk Kim get_page(page); 1297608514deSJaegeuk Kim last_page = page; 1298608514deSJaegeuk Kim unlock_page(page); 1299608514deSJaegeuk Kim } 1300608514deSJaegeuk Kim pagevec_release(&pvec); 1301608514deSJaegeuk Kim cond_resched(); 1302608514deSJaegeuk Kim } 1303608514deSJaegeuk Kim return last_page; 1304608514deSJaegeuk Kim } 1305608514deSJaegeuk Kim 130626de9b11SJaegeuk Kim int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 1307608514deSJaegeuk Kim struct writeback_control *wbc, bool atomic) 1308608514deSJaegeuk Kim { 1309608514deSJaegeuk Kim pgoff_t index, end; 1310608514deSJaegeuk Kim struct pagevec pvec; 1311608514deSJaegeuk Kim int ret = 0; 1312608514deSJaegeuk Kim struct page *last_page = NULL; 1313608514deSJaegeuk Kim bool marked = false; 131426de9b11SJaegeuk Kim nid_t ino = inode->i_ino; 13153f5f4959SChao Yu int nwritten = 0; 1316608514deSJaegeuk Kim 1317608514deSJaegeuk Kim if (atomic) { 1318608514deSJaegeuk Kim last_page = last_fsync_dnode(sbi, ino); 1319608514deSJaegeuk Kim if (IS_ERR_OR_NULL(last_page)) 1320608514deSJaegeuk Kim return PTR_ERR_OR_ZERO(last_page); 1321608514deSJaegeuk Kim } 1322608514deSJaegeuk Kim retry: 1323608514deSJaegeuk Kim pagevec_init(&pvec, 0); 1324608514deSJaegeuk Kim index = 0; 1325608514deSJaegeuk Kim end = ULONG_MAX; 1326608514deSJaegeuk Kim 1327608514deSJaegeuk Kim while (index <= end) { 1328608514deSJaegeuk Kim int i, nr_pages; 1329608514deSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1330608514deSJaegeuk Kim PAGECACHE_TAG_DIRTY, 1331608514deSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1332608514deSJaegeuk Kim if (nr_pages == 0) 1333608514deSJaegeuk Kim break; 1334608514deSJaegeuk Kim 1335608514deSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1336608514deSJaegeuk Kim struct page *page = pvec.pages[i]; 1337608514deSJaegeuk Kim 1338608514deSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) { 1339608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1340608514deSJaegeuk Kim pagevec_release(&pvec); 1341608514deSJaegeuk Kim return -EIO; 1342608514deSJaegeuk Kim } 1343608514deSJaegeuk Kim 1344608514deSJaegeuk Kim if (!IS_DNODE(page) || !is_cold_node(page)) 1345608514deSJaegeuk Kim continue; 1346608514deSJaegeuk Kim if (ino_of_node(page) != ino) 1347608514deSJaegeuk Kim continue; 1348608514deSJaegeuk Kim 1349608514deSJaegeuk Kim lock_page(page); 1350608514deSJaegeuk Kim 1351608514deSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1352608514deSJaegeuk Kim continue_unlock: 1353608514deSJaegeuk Kim unlock_page(page); 1354608514deSJaegeuk Kim continue; 1355608514deSJaegeuk Kim } 1356608514deSJaegeuk Kim if (ino_of_node(page) != ino) 135752681375SJaegeuk Kim goto continue_unlock; 135852681375SJaegeuk Kim 1359608514deSJaegeuk Kim if (!PageDirty(page) && page != last_page) { 1360608514deSJaegeuk Kim /* someone wrote it for us */ 1361608514deSJaegeuk Kim goto continue_unlock; 1362608514deSJaegeuk Kim } 1363608514deSJaegeuk Kim 1364608514deSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1365608514deSJaegeuk Kim BUG_ON(PageWriteback(page)); 1366608514deSJaegeuk Kim 1367608514deSJaegeuk Kim if (!atomic || page == last_page) { 136852681375SJaegeuk Kim set_fsync_mark(page, 1); 136926de9b11SJaegeuk Kim if (IS_INODE(page)) { 137026de9b11SJaegeuk Kim if (is_inode_flag_set(inode, 137126de9b11SJaegeuk Kim FI_DIRTY_INODE)) 137226de9b11SJaegeuk Kim update_inode(inode, page); 137352681375SJaegeuk Kim set_dentry_mark(page, 137452681375SJaegeuk Kim need_dentry_mark(sbi, ino)); 137526de9b11SJaegeuk Kim } 1376608514deSJaegeuk Kim /* may be written by other thread */ 1377608514deSJaegeuk Kim if (!PageDirty(page)) 1378608514deSJaegeuk Kim set_page_dirty(page); 1379608514deSJaegeuk Kim } 1380608514deSJaegeuk Kim 1381608514deSJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1382608514deSJaegeuk Kim goto continue_unlock; 138352681375SJaegeuk Kim 1384c267ec15SJaegeuk Kim ret = NODE_MAPPING(sbi)->a_ops->writepage(page, wbc); 1385c267ec15SJaegeuk Kim if (ret) { 138652681375SJaegeuk Kim unlock_page(page); 1387608514deSJaegeuk Kim f2fs_put_page(last_page, 0); 1388608514deSJaegeuk Kim break; 13893f5f4959SChao Yu } else { 13903f5f4959SChao Yu nwritten++; 1391608514deSJaegeuk Kim } 13923f5f4959SChao Yu 1393608514deSJaegeuk Kim if (page == last_page) { 1394608514deSJaegeuk Kim f2fs_put_page(page, 0); 1395608514deSJaegeuk Kim marked = true; 139652681375SJaegeuk Kim break; 139752681375SJaegeuk Kim } 1398c267ec15SJaegeuk Kim } 139952681375SJaegeuk Kim pagevec_release(&pvec); 140052681375SJaegeuk Kim cond_resched(); 140152681375SJaegeuk Kim 1402608514deSJaegeuk Kim if (ret || marked) 140352681375SJaegeuk Kim break; 140452681375SJaegeuk Kim } 1405608514deSJaegeuk Kim if (!ret && atomic && !marked) { 1406608514deSJaegeuk Kim f2fs_msg(sbi->sb, KERN_DEBUG, 1407608514deSJaegeuk Kim "Retry to write fsync mark: ino=%u, idx=%lx", 1408608514deSJaegeuk Kim ino, last_page->index); 1409608514deSJaegeuk Kim lock_page(last_page); 1410608514deSJaegeuk Kim set_page_dirty(last_page); 1411608514deSJaegeuk Kim unlock_page(last_page); 1412608514deSJaegeuk Kim goto retry; 1413608514deSJaegeuk Kim } 14143f5f4959SChao Yu 14153f5f4959SChao Yu if (nwritten) 14163f5f4959SChao Yu f2fs_submit_merged_bio_cond(sbi, NULL, NULL, ino, NODE, WRITE); 1417c267ec15SJaegeuk Kim return ret ? -EIO: 0; 141852681375SJaegeuk Kim } 141952681375SJaegeuk Kim 142052681375SJaegeuk Kim int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc) 142152681375SJaegeuk Kim { 142252681375SJaegeuk Kim pgoff_t index, end; 142352681375SJaegeuk Kim struct pagevec pvec; 142452681375SJaegeuk Kim int step = 0; 142512bb0a8fSJaegeuk Kim int nwritten = 0; 14263f5f4959SChao Yu int ret = 0; 1427e05df3b1SJaegeuk Kim 1428e05df3b1SJaegeuk Kim pagevec_init(&pvec, 0); 1429e05df3b1SJaegeuk Kim 1430e05df3b1SJaegeuk Kim next_step: 1431e05df3b1SJaegeuk Kim index = 0; 143280dd9c0eSChao Yu end = ULONG_MAX; 1433e05df3b1SJaegeuk Kim 1434e05df3b1SJaegeuk Kim while (index <= end) { 1435e05df3b1SJaegeuk Kim int i, nr_pages; 14364ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1437e05df3b1SJaegeuk Kim PAGECACHE_TAG_DIRTY, 1438e05df3b1SJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 1439e05df3b1SJaegeuk Kim if (nr_pages == 0) 1440e05df3b1SJaegeuk Kim break; 1441e05df3b1SJaegeuk Kim 1442e05df3b1SJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1443e05df3b1SJaegeuk Kim struct page *page = pvec.pages[i]; 1444e05df3b1SJaegeuk Kim 14456d5a1495SChao Yu if (unlikely(f2fs_cp_error(sbi))) { 14466d5a1495SChao Yu pagevec_release(&pvec); 14473f5f4959SChao Yu ret = -EIO; 14483f5f4959SChao Yu goto out; 14496d5a1495SChao Yu } 14506d5a1495SChao Yu 1451e05df3b1SJaegeuk Kim /* 1452e05df3b1SJaegeuk Kim * flushing sequence with step: 1453e05df3b1SJaegeuk Kim * 0. indirect nodes 1454e05df3b1SJaegeuk Kim * 1. dentry dnodes 1455e05df3b1SJaegeuk Kim * 2. file dnodes 1456e05df3b1SJaegeuk Kim */ 1457e05df3b1SJaegeuk Kim if (step == 0 && IS_DNODE(page)) 1458e05df3b1SJaegeuk Kim continue; 1459e05df3b1SJaegeuk Kim if (step == 1 && (!IS_DNODE(page) || 1460e05df3b1SJaegeuk Kim is_cold_node(page))) 1461e05df3b1SJaegeuk Kim continue; 1462e05df3b1SJaegeuk Kim if (step == 2 && (!IS_DNODE(page) || 1463e05df3b1SJaegeuk Kim !is_cold_node(page))) 1464e05df3b1SJaegeuk Kim continue; 14659a4cbc9eSChao Yu lock_node: 146652681375SJaegeuk Kim if (!trylock_page(page)) 1467e05df3b1SJaegeuk Kim continue; 1468e05df3b1SJaegeuk Kim 14694ef51a8fSJaegeuk Kim if (unlikely(page->mapping != NODE_MAPPING(sbi))) { 1470e05df3b1SJaegeuk Kim continue_unlock: 1471e05df3b1SJaegeuk Kim unlock_page(page); 1472e05df3b1SJaegeuk Kim continue; 1473e05df3b1SJaegeuk Kim } 1474e05df3b1SJaegeuk Kim 1475e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1476e05df3b1SJaegeuk Kim /* someone wrote it for us */ 1477e05df3b1SJaegeuk Kim goto continue_unlock; 1478e05df3b1SJaegeuk Kim } 1479e05df3b1SJaegeuk Kim 14802049d4fcSJaegeuk Kim /* flush inline_data */ 148152681375SJaegeuk Kim if (is_inline_node(page)) { 14822049d4fcSJaegeuk Kim clear_inline_node(page); 14832049d4fcSJaegeuk Kim unlock_page(page); 14842049d4fcSJaegeuk Kim flush_inline_data(sbi, ino_of_node(page)); 14859a4cbc9eSChao Yu goto lock_node; 14862049d4fcSJaegeuk Kim } 14872049d4fcSJaegeuk Kim 1488fa3d2bdfSJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1489fa3d2bdfSJaegeuk Kim 1490fa3d2bdfSJaegeuk Kim BUG_ON(PageWriteback(page)); 1491e05df3b1SJaegeuk Kim if (!clear_page_dirty_for_io(page)) 1492e05df3b1SJaegeuk Kim goto continue_unlock; 1493e05df3b1SJaegeuk Kim 1494e05df3b1SJaegeuk Kim set_fsync_mark(page, 0); 1495e05df3b1SJaegeuk Kim set_dentry_mark(page, 0); 149652746519SJaegeuk Kim 149752746519SJaegeuk Kim if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) 149852746519SJaegeuk Kim unlock_page(page); 14993f5f4959SChao Yu else 15003f5f4959SChao Yu nwritten++; 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 } 15183f5f4959SChao Yu out: 15193f5f4959SChao Yu if (nwritten) 15203f5f4959SChao Yu f2fs_submit_merged_bio(sbi, NODE, WRITE); 15213f5f4959SChao Yu return ret; 1522e05df3b1SJaegeuk Kim } 1523e05df3b1SJaegeuk Kim 1524cfe58f9dSJaegeuk Kim int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) 1525cfe58f9dSJaegeuk Kim { 152680dd9c0eSChao Yu pgoff_t index = 0, end = ULONG_MAX; 1527cfe58f9dSJaegeuk Kim struct pagevec pvec; 1528280db3c8SMiklos Szeredi int ret2, ret = 0; 1529cfe58f9dSJaegeuk Kim 1530cfe58f9dSJaegeuk Kim pagevec_init(&pvec, 0); 15314ef51a8fSJaegeuk Kim 15324ef51a8fSJaegeuk Kim while (index <= end) { 15334ef51a8fSJaegeuk Kim int i, nr_pages; 15344ef51a8fSJaegeuk Kim nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, 1535cfe58f9dSJaegeuk Kim PAGECACHE_TAG_WRITEBACK, 15364ef51a8fSJaegeuk Kim min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); 15374ef51a8fSJaegeuk Kim if (nr_pages == 0) 15384ef51a8fSJaegeuk Kim break; 1539cfe58f9dSJaegeuk Kim 1540cfe58f9dSJaegeuk Kim for (i = 0; i < nr_pages; i++) { 1541cfe58f9dSJaegeuk Kim struct page *page = pvec.pages[i]; 1542cfe58f9dSJaegeuk Kim 1543cfe58f9dSJaegeuk Kim /* until radix tree lookup accepts end_index */ 1544cfb271d4SChao Yu if (unlikely(page->index > end)) 1545cfe58f9dSJaegeuk Kim continue; 1546cfe58f9dSJaegeuk Kim 15474bf08ff6SChao Yu if (ino && ino_of_node(page) == ino) { 1548fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(page, NODE, true); 1549cfe58f9dSJaegeuk Kim if (TestClearPageError(page)) 1550cfe58f9dSJaegeuk Kim ret = -EIO; 1551cfe58f9dSJaegeuk Kim } 15524bf08ff6SChao Yu } 1553cfe58f9dSJaegeuk Kim pagevec_release(&pvec); 1554cfe58f9dSJaegeuk Kim cond_resched(); 1555cfe58f9dSJaegeuk Kim } 1556cfe58f9dSJaegeuk Kim 1557280db3c8SMiklos Szeredi ret2 = filemap_check_errors(NODE_MAPPING(sbi)); 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, 157204d328deSMike Christie .op = REQ_OP_WRITE, 157304d328deSMike Christie .op_flags = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0, 157405ca3632SJaegeuk Kim .page = page, 15754375a336SJaegeuk Kim .encrypted_page = NULL, 1576fb5566daSJaegeuk Kim }; 1577e05df3b1SJaegeuk Kim 1578ecda0de3SChao Yu trace_f2fs_writepage(page, NODE); 1579ecda0de3SChao Yu 1580caf0047eSChao Yu if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 158187a9bd26SJaegeuk Kim goto redirty_out; 1582cf779cabSJaegeuk Kim if (unlikely(f2fs_cp_error(sbi))) 1583cf779cabSJaegeuk Kim goto redirty_out; 158487a9bd26SJaegeuk Kim 1585e05df3b1SJaegeuk Kim /* get old block addr of this node page */ 1586e05df3b1SJaegeuk Kim nid = nid_of_node(page); 15879850cf4aSJaegeuk Kim f2fs_bug_on(sbi, page->index != nid); 1588e05df3b1SJaegeuk Kim 158925b93346SJaegeuk Kim if (wbc->for_reclaim) { 159025b93346SJaegeuk Kim if (!down_read_trylock(&sbi->node_write)) 159125b93346SJaegeuk Kim goto redirty_out; 159225b93346SJaegeuk Kim } else { 159325b93346SJaegeuk Kim down_read(&sbi->node_write); 159425b93346SJaegeuk Kim } 159525b93346SJaegeuk Kim 1596e05df3b1SJaegeuk Kim get_node_info(sbi, nid, &ni); 1597e05df3b1SJaegeuk Kim 1598e05df3b1SJaegeuk Kim /* This page is already truncated */ 15996bacf52fSJaegeuk Kim if (unlikely(ni.blk_addr == NULL_ADDR)) { 16002bca1e23SJaegeuk Kim ClearPageUptodate(page); 160139936837SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 160225b93346SJaegeuk Kim up_read(&sbi->node_write); 160339936837SJaegeuk Kim unlock_page(page); 160439936837SJaegeuk Kim return 0; 160539936837SJaegeuk Kim } 1606e05df3b1SJaegeuk Kim 1607e05df3b1SJaegeuk Kim set_page_writeback(page); 16087a9d7548SChao Yu fio.old_blkaddr = ni.blk_addr; 160905ca3632SJaegeuk Kim write_node_page(nid, &fio); 16107a9d7548SChao Yu set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); 1611e05df3b1SJaegeuk Kim dec_page_count(sbi, F2FS_DIRTY_NODES); 1612b3582c68SChao Yu up_read(&sbi->node_write); 16130c3a5797SChao Yu 16140c3a5797SChao Yu if (wbc->for_reclaim) 16150c3a5797SChao Yu f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, NODE, WRITE); 16160c3a5797SChao Yu 1617e05df3b1SJaegeuk Kim unlock_page(page); 161827c6bd60SJaegeuk Kim 16190c3a5797SChao Yu if (unlikely(f2fs_cp_error(sbi))) 162027c6bd60SJaegeuk Kim f2fs_submit_merged_bio(sbi, NODE, WRITE); 162127c6bd60SJaegeuk Kim 1622e05df3b1SJaegeuk Kim return 0; 162387a9bd26SJaegeuk Kim 162487a9bd26SJaegeuk Kim redirty_out: 162576f60268SJaegeuk Kim redirty_page_for_writepage(wbc, page); 162687a9bd26SJaegeuk Kim return AOP_WRITEPAGE_ACTIVATE; 1627e05df3b1SJaegeuk Kim } 1628e05df3b1SJaegeuk Kim 1629e05df3b1SJaegeuk Kim static int f2fs_write_node_pages(struct address_space *mapping, 1630e05df3b1SJaegeuk Kim struct writeback_control *wbc) 1631e05df3b1SJaegeuk Kim { 16324081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 16339dfa1bafSJaegeuk Kim struct blk_plug plug; 163450c8cdb3SJaegeuk Kim long diff; 1635e05df3b1SJaegeuk Kim 16364660f9c0SJaegeuk Kim /* balancing f2fs's metadata in background */ 16374660f9c0SJaegeuk Kim f2fs_balance_fs_bg(sbi); 1638e05df3b1SJaegeuk Kim 1639a7fdffbdSJaegeuk Kim /* collect a number of dirty node pages and write together */ 164087d6f890SJaegeuk Kim if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) 1641d3baf95dSJaegeuk Kim goto skip_write; 1642a7fdffbdSJaegeuk Kim 1643d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1644d31c7c3fSYunlei He 164550c8cdb3SJaegeuk Kim diff = nr_pages_to_write(sbi, NODE, wbc); 1646fb5566daSJaegeuk Kim wbc->sync_mode = WB_SYNC_NONE; 16479dfa1bafSJaegeuk Kim blk_start_plug(&plug); 164852681375SJaegeuk Kim sync_node_pages(sbi, wbc); 16499dfa1bafSJaegeuk Kim blk_finish_plug(&plug); 165050c8cdb3SJaegeuk Kim wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); 1651e05df3b1SJaegeuk Kim return 0; 1652d3baf95dSJaegeuk Kim 1653d3baf95dSJaegeuk Kim skip_write: 1654d3baf95dSJaegeuk Kim wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); 1655d31c7c3fSYunlei He trace_f2fs_writepages(mapping->host, wbc, NODE); 1656d3baf95dSJaegeuk Kim return 0; 1657e05df3b1SJaegeuk Kim } 1658e05df3b1SJaegeuk Kim 1659e05df3b1SJaegeuk Kim static int f2fs_set_node_page_dirty(struct page *page) 1660e05df3b1SJaegeuk Kim { 166126c6b887SJaegeuk Kim trace_f2fs_set_page_dirty(page, NODE); 166226c6b887SJaegeuk Kim 1663237c0790SJaegeuk Kim if (!PageUptodate(page)) 1664e05df3b1SJaegeuk Kim SetPageUptodate(page); 1665e05df3b1SJaegeuk Kim if (!PageDirty(page)) { 1666fe76b796SJaegeuk Kim f2fs_set_page_dirty_nobuffers(page); 16674081363fSJaegeuk Kim inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); 1668e05df3b1SJaegeuk Kim SetPagePrivate(page); 16699e4ded3fSJaegeuk Kim f2fs_trace_pid(page); 1670e05df3b1SJaegeuk Kim return 1; 1671e05df3b1SJaegeuk Kim } 1672e05df3b1SJaegeuk Kim return 0; 1673e05df3b1SJaegeuk Kim } 1674e05df3b1SJaegeuk Kim 16750a8165d7SJaegeuk Kim /* 1676e05df3b1SJaegeuk Kim * Structure of the f2fs node operations 1677e05df3b1SJaegeuk Kim */ 1678e05df3b1SJaegeuk Kim const struct address_space_operations f2fs_node_aops = { 1679e05df3b1SJaegeuk Kim .writepage = f2fs_write_node_page, 1680e05df3b1SJaegeuk Kim .writepages = f2fs_write_node_pages, 1681e05df3b1SJaegeuk Kim .set_page_dirty = f2fs_set_node_page_dirty, 1682487261f3SChao Yu .invalidatepage = f2fs_invalidate_page, 1683487261f3SChao Yu .releasepage = f2fs_release_page, 16845b7a487cSWeichao Guo #ifdef CONFIG_MIGRATION 16855b7a487cSWeichao Guo .migratepage = f2fs_migrate_page, 16865b7a487cSWeichao Guo #endif 1687e05df3b1SJaegeuk Kim }; 1688e05df3b1SJaegeuk Kim 16898a7ed66aSJaegeuk Kim static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, 16908a7ed66aSJaegeuk Kim nid_t n) 1691e05df3b1SJaegeuk Kim { 16928a7ed66aSJaegeuk Kim return radix_tree_lookup(&nm_i->free_nid_root, n); 16933aa770a9SNamjae Jeon } 1694e05df3b1SJaegeuk Kim 16958a7ed66aSJaegeuk Kim static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, 16968a7ed66aSJaegeuk Kim struct free_nid *i) 1697e05df3b1SJaegeuk Kim { 1698e05df3b1SJaegeuk Kim list_del(&i->list); 16998a7ed66aSJaegeuk Kim radix_tree_delete(&nm_i->free_nid_root, i->nid); 1700e05df3b1SJaegeuk Kim } 1701e05df3b1SJaegeuk Kim 17026fb03f3aSJaegeuk Kim static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) 1703e05df3b1SJaegeuk Kim { 17046fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1705e05df3b1SJaegeuk Kim struct free_nid *i; 170659bbd474SJaegeuk Kim struct nat_entry *ne; 1707e05df3b1SJaegeuk Kim 17086fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) 170923d38844SHaicheng Li return -1; 17109198acebSJaegeuk Kim 17119198acebSJaegeuk Kim /* 0 nid should not be used */ 1712cfb271d4SChao Yu if (unlikely(nid == 0)) 17139198acebSJaegeuk Kim return 0; 171459bbd474SJaegeuk Kim 17157bd59381SGu Zheng if (build) { 171659bbd474SJaegeuk Kim /* do not add allocated nids */ 171759bbd474SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 1718a5131193SJaegeuk Kim if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || 17197ef35e3bSJaegeuk Kim nat_get_blkaddr(ne) != NULL_ADDR)) 172059bbd474SJaegeuk Kim return 0; 1721e05df3b1SJaegeuk Kim } 17227bd59381SGu Zheng 17237bd59381SGu Zheng i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); 1724e05df3b1SJaegeuk Kim i->nid = nid; 1725e05df3b1SJaegeuk Kim i->state = NID_NEW; 1726e05df3b1SJaegeuk Kim 1727769ec6e5SJaegeuk Kim if (radix_tree_preload(GFP_NOFS)) { 1728769ec6e5SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1729769ec6e5SJaegeuk Kim return 0; 1730769ec6e5SJaegeuk Kim } 1731769ec6e5SJaegeuk Kim 1732e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17338a7ed66aSJaegeuk Kim if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { 1734e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1735769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1736e05df3b1SJaegeuk Kim kmem_cache_free(free_nid_slab, i); 1737e05df3b1SJaegeuk Kim return 0; 1738e05df3b1SJaegeuk Kim } 1739e05df3b1SJaegeuk Kim list_add_tail(&i->list, &nm_i->free_nid_list); 1740e05df3b1SJaegeuk Kim nm_i->fcnt++; 1741e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1742769ec6e5SJaegeuk Kim radix_tree_preload_end(); 1743e05df3b1SJaegeuk Kim return 1; 1744e05df3b1SJaegeuk Kim } 1745e05df3b1SJaegeuk Kim 1746e05df3b1SJaegeuk Kim static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) 1747e05df3b1SJaegeuk Kim { 1748e05df3b1SJaegeuk Kim struct free_nid *i; 1749cf0ee0f0SChao Yu bool need_free = false; 1750cf0ee0f0SChao Yu 1751e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 17528a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 1753e05df3b1SJaegeuk Kim if (i && i->state == NID_NEW) { 17548a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1755e05df3b1SJaegeuk Kim nm_i->fcnt--; 1756cf0ee0f0SChao Yu need_free = true; 1757e05df3b1SJaegeuk Kim } 1758e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1759cf0ee0f0SChao Yu 1760cf0ee0f0SChao Yu if (need_free) 1761cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1762e05df3b1SJaegeuk Kim } 1763e05df3b1SJaegeuk Kim 17646fb03f3aSJaegeuk Kim static void scan_nat_page(struct f2fs_sb_info *sbi, 1765e05df3b1SJaegeuk Kim struct page *nat_page, nid_t start_nid) 1766e05df3b1SJaegeuk Kim { 17676fb03f3aSJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1768e05df3b1SJaegeuk Kim struct f2fs_nat_block *nat_blk = page_address(nat_page); 1769e05df3b1SJaegeuk Kim block_t blk_addr; 1770e05df3b1SJaegeuk Kim int i; 1771e05df3b1SJaegeuk Kim 1772e05df3b1SJaegeuk Kim i = start_nid % NAT_ENTRY_PER_BLOCK; 1773e05df3b1SJaegeuk Kim 1774e05df3b1SJaegeuk Kim for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { 177523d38844SHaicheng Li 1776cfb271d4SChao Yu if (unlikely(start_nid >= nm_i->max_nid)) 177704431c44SJaegeuk Kim break; 177823d38844SHaicheng Li 1779e05df3b1SJaegeuk Kim blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); 17809850cf4aSJaegeuk Kim f2fs_bug_on(sbi, blk_addr == NEW_ADDR); 178123d38844SHaicheng Li if (blk_addr == NULL_ADDR) { 17826fb03f3aSJaegeuk Kim if (add_free_nid(sbi, start_nid, true) < 0) 178323d38844SHaicheng Li break; 178423d38844SHaicheng Li } 1785e05df3b1SJaegeuk Kim } 1786e05df3b1SJaegeuk Kim } 1787e05df3b1SJaegeuk Kim 17882411cf5bSChao Yu void __build_free_nids(struct f2fs_sb_info *sbi) 1789e05df3b1SJaegeuk Kim { 1790e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1791e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 1792b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 17938760952dSHaicheng Li int i = 0; 179455008d84SJaegeuk Kim nid_t nid = nm_i->next_scan_nid; 1795e05df3b1SJaegeuk Kim 179655008d84SJaegeuk Kim /* Enough entries */ 1797ad4edb83SJaegeuk Kim if (nm_i->fcnt >= NAT_ENTRY_PER_BLOCK) 179855008d84SJaegeuk Kim return; 1799e05df3b1SJaegeuk Kim 180055008d84SJaegeuk Kim /* readahead nat pages to be scanned */ 180126879fb1SChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, 180226879fb1SChao Yu META_NAT, true); 1803e05df3b1SJaegeuk Kim 1804b873b798SJaegeuk Kim down_read(&nm_i->nat_tree_lock); 1805a5131193SJaegeuk Kim 1806e05df3b1SJaegeuk Kim while (1) { 1807e05df3b1SJaegeuk Kim struct page *page = get_current_nat_page(sbi, nid); 1808e05df3b1SJaegeuk Kim 18096fb03f3aSJaegeuk Kim scan_nat_page(sbi, page, nid); 1810e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 1811e05df3b1SJaegeuk Kim 1812e05df3b1SJaegeuk Kim nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); 1813cfb271d4SChao Yu if (unlikely(nid >= nm_i->max_nid)) 1814e05df3b1SJaegeuk Kim nid = 0; 181555008d84SJaegeuk Kim 1816a6d494b6SChao Yu if (++i >= FREE_NID_PAGES) 1817e05df3b1SJaegeuk Kim break; 1818e05df3b1SJaegeuk Kim } 1819e05df3b1SJaegeuk Kim 182055008d84SJaegeuk Kim /* go to the next free nat pages to find free nids abundantly */ 182155008d84SJaegeuk Kim nm_i->next_scan_nid = nid; 1822e05df3b1SJaegeuk Kim 1823e05df3b1SJaegeuk Kim /* find free nids from current sum_pages */ 1824b7ad7512SChao Yu down_read(&curseg->journal_rwsem); 1825dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 1826dfc08a12SChao Yu block_t addr; 1827dfc08a12SChao Yu 1828dfc08a12SChao Yu addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); 1829dfc08a12SChao Yu nid = le32_to_cpu(nid_in_journal(journal, i)); 1830e05df3b1SJaegeuk Kim if (addr == NULL_ADDR) 18316fb03f3aSJaegeuk Kim add_free_nid(sbi, nid, true); 1832e05df3b1SJaegeuk Kim else 1833e05df3b1SJaegeuk Kim remove_free_nid(nm_i, nid); 1834e05df3b1SJaegeuk Kim } 1835b7ad7512SChao Yu up_read(&curseg->journal_rwsem); 1836b873b798SJaegeuk Kim up_read(&nm_i->nat_tree_lock); 18372db2388fSChao Yu 18382db2388fSChao Yu ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), 1839ea1a29a0SChao Yu nm_i->ra_nid_pages, META_NAT, false); 1840e05df3b1SJaegeuk Kim } 1841e05df3b1SJaegeuk Kim 18422411cf5bSChao Yu void build_free_nids(struct f2fs_sb_info *sbi) 18432411cf5bSChao Yu { 18442411cf5bSChao Yu mutex_lock(&NM_I(sbi)->build_lock); 18452411cf5bSChao Yu __build_free_nids(sbi); 18462411cf5bSChao Yu mutex_unlock(&NM_I(sbi)->build_lock); 18472411cf5bSChao Yu } 18482411cf5bSChao Yu 1849e05df3b1SJaegeuk Kim /* 1850e05df3b1SJaegeuk Kim * If this function returns success, caller can obtain a new nid 1851e05df3b1SJaegeuk Kim * from second parameter of this function. 1852e05df3b1SJaegeuk Kim * The returned nid could be used ino as well as nid when inode is created. 1853e05df3b1SJaegeuk Kim */ 1854e05df3b1SJaegeuk Kim bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 1855e05df3b1SJaegeuk Kim { 1856e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1857e05df3b1SJaegeuk Kim struct free_nid *i = NULL; 1858e05df3b1SJaegeuk Kim retry: 1859cb78942bSJaegeuk Kim #ifdef CONFIG_F2FS_FAULT_INJECTION 18601ecc0c5cSChao Yu if (time_to_inject(sbi, FAULT_ALLOC_NID)) 1861cb78942bSJaegeuk Kim return false; 1862cb78942bSJaegeuk Kim #endif 18637ee0eeabSJaegeuk Kim if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) 1864e05df3b1SJaegeuk Kim return false; 1865e05df3b1SJaegeuk Kim 1866e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 1867e05df3b1SJaegeuk Kim 186855008d84SJaegeuk Kim /* We should not use stale free nids created by build_free_nids */ 1869f978f5a0SGu Zheng if (nm_i->fcnt && !on_build_free_nids(nm_i)) { 18709850cf4aSJaegeuk Kim f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); 18712d7b822aSChao Yu list_for_each_entry(i, &nm_i->free_nid_list, list) 1872e05df3b1SJaegeuk Kim if (i->state == NID_NEW) 1873e05df3b1SJaegeuk Kim break; 1874e05df3b1SJaegeuk Kim 18759850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state != NID_NEW); 1876e05df3b1SJaegeuk Kim *nid = i->nid; 1877e05df3b1SJaegeuk Kim i->state = NID_ALLOC; 1878e05df3b1SJaegeuk Kim nm_i->fcnt--; 1879e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1880e05df3b1SJaegeuk Kim return true; 1881e05df3b1SJaegeuk Kim } 188255008d84SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 188355008d84SJaegeuk Kim 188455008d84SJaegeuk Kim /* Let's scan nat pages and its caches to get free nids */ 188555008d84SJaegeuk Kim build_free_nids(sbi); 188655008d84SJaegeuk Kim goto retry; 188755008d84SJaegeuk Kim } 1888e05df3b1SJaegeuk Kim 18890a8165d7SJaegeuk Kim /* 1890e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1891e05df3b1SJaegeuk Kim */ 1892e05df3b1SJaegeuk Kim void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) 1893e05df3b1SJaegeuk Kim { 1894e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 1895e05df3b1SJaegeuk Kim struct free_nid *i; 1896e05df3b1SJaegeuk Kim 1897e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 18988a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 18999850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 19008a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1901e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1902cf0ee0f0SChao Yu 1903cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1904e05df3b1SJaegeuk Kim } 1905e05df3b1SJaegeuk Kim 19060a8165d7SJaegeuk Kim /* 1907e05df3b1SJaegeuk Kim * alloc_nid() should be called prior to this function. 1908e05df3b1SJaegeuk Kim */ 1909e05df3b1SJaegeuk Kim void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) 1910e05df3b1SJaegeuk Kim { 191149952fa1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 191249952fa1SJaegeuk Kim struct free_nid *i; 1913cf0ee0f0SChao Yu bool need_free = false; 191449952fa1SJaegeuk Kim 191565985d93SJaegeuk Kim if (!nid) 191665985d93SJaegeuk Kim return; 191765985d93SJaegeuk Kim 191849952fa1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 19198a7ed66aSJaegeuk Kim i = __lookup_free_nid_list(nm_i, nid); 19209850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); 19216fb03f3aSJaegeuk Kim if (!available_free_memory(sbi, FREE_NIDS)) { 19228a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 1923cf0ee0f0SChao Yu need_free = true; 192495630cbaSHaicheng Li } else { 192549952fa1SJaegeuk Kim i->state = NID_NEW; 192649952fa1SJaegeuk Kim nm_i->fcnt++; 192795630cbaSHaicheng Li } 192849952fa1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 1929cf0ee0f0SChao Yu 1930cf0ee0f0SChao Yu if (need_free) 1931cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 1932e05df3b1SJaegeuk Kim } 1933e05df3b1SJaegeuk Kim 193431696580SChao Yu int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) 193531696580SChao Yu { 193631696580SChao Yu struct f2fs_nm_info *nm_i = NM_I(sbi); 193731696580SChao Yu struct free_nid *i, *next; 193831696580SChao Yu int nr = nr_shrink; 193931696580SChao Yu 1940ad4edb83SJaegeuk Kim if (nm_i->fcnt <= MAX_FREE_NIDS) 1941ad4edb83SJaegeuk Kim return 0; 1942ad4edb83SJaegeuk Kim 194331696580SChao Yu if (!mutex_trylock(&nm_i->build_lock)) 194431696580SChao Yu return 0; 194531696580SChao Yu 194631696580SChao Yu spin_lock(&nm_i->free_nid_list_lock); 194731696580SChao Yu list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { 1948ad4edb83SJaegeuk Kim if (nr_shrink <= 0 || nm_i->fcnt <= MAX_FREE_NIDS) 194931696580SChao Yu break; 195031696580SChao Yu if (i->state == NID_ALLOC) 195131696580SChao Yu continue; 195231696580SChao Yu __del_from_free_nid_list(nm_i, i); 195331696580SChao Yu kmem_cache_free(free_nid_slab, i); 1954f7409d0fSJaegeuk Kim nm_i->fcnt--; 195531696580SChao Yu nr_shrink--; 195631696580SChao Yu } 195731696580SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 195831696580SChao Yu mutex_unlock(&nm_i->build_lock); 195931696580SChao Yu 196031696580SChao Yu return nr - nr_shrink; 196131696580SChao Yu } 196231696580SChao Yu 196370cfed88SChao Yu void recover_inline_xattr(struct inode *inode, struct page *page) 196428cdce04SChao Yu { 196528cdce04SChao Yu void *src_addr, *dst_addr; 196628cdce04SChao Yu size_t inline_size; 196728cdce04SChao Yu struct page *ipage; 196828cdce04SChao Yu struct f2fs_inode *ri; 196928cdce04SChao Yu 19704081363fSJaegeuk Kim ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); 19719850cf4aSJaegeuk Kim f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); 197228cdce04SChao Yu 1973e3b4d43fSJaegeuk Kim ri = F2FS_INODE(page); 1974e3b4d43fSJaegeuk Kim if (!(ri->i_inline & F2FS_INLINE_XATTR)) { 197591942321SJaegeuk Kim clear_inode_flag(inode, FI_INLINE_XATTR); 1976e3b4d43fSJaegeuk Kim goto update_inode; 1977e3b4d43fSJaegeuk Kim } 1978e3b4d43fSJaegeuk Kim 197928cdce04SChao Yu dst_addr = inline_xattr_addr(ipage); 198028cdce04SChao Yu src_addr = inline_xattr_addr(page); 198128cdce04SChao Yu inline_size = inline_xattr_size(inode); 198228cdce04SChao Yu 1983fec1d657SJaegeuk Kim f2fs_wait_on_page_writeback(ipage, NODE, true); 198428cdce04SChao Yu memcpy(dst_addr, src_addr, inline_size); 1985e3b4d43fSJaegeuk Kim update_inode: 198628cdce04SChao Yu update_inode(inode, ipage); 198728cdce04SChao Yu f2fs_put_page(ipage, 1); 198828cdce04SChao Yu } 198928cdce04SChao Yu 19901c35a90eSJaegeuk Kim void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) 1991abb2366cSJaegeuk Kim { 19924081363fSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1993abb2366cSJaegeuk Kim nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; 1994abb2366cSJaegeuk Kim nid_t new_xnid = nid_of_node(page); 1995abb2366cSJaegeuk Kim struct node_info ni; 1996abb2366cSJaegeuk Kim 1997abb2366cSJaegeuk Kim /* 1: invalidate the previous xattr nid */ 1998abb2366cSJaegeuk Kim if (!prev_xnid) 1999abb2366cSJaegeuk Kim goto recover_xnid; 2000abb2366cSJaegeuk Kim 2001abb2366cSJaegeuk Kim /* Deallocate node address */ 2002abb2366cSJaegeuk Kim get_node_info(sbi, prev_xnid, &ni); 20039850cf4aSJaegeuk Kim f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); 2004abb2366cSJaegeuk Kim invalidate_blocks(sbi, ni.blk_addr); 2005abb2366cSJaegeuk Kim dec_valid_node_count(sbi, inode); 2006479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NULL_ADDR, false); 2007abb2366cSJaegeuk Kim 2008abb2366cSJaegeuk Kim recover_xnid: 2009abb2366cSJaegeuk Kim /* 2: allocate new xattr nid */ 2010abb2366cSJaegeuk Kim if (unlikely(!inc_valid_node_count(sbi, inode))) 20119850cf4aSJaegeuk Kim f2fs_bug_on(sbi, 1); 2012abb2366cSJaegeuk Kim 2013abb2366cSJaegeuk Kim remove_free_nid(NM_I(sbi), new_xnid); 2014abb2366cSJaegeuk Kim get_node_info(sbi, new_xnid, &ni); 2015abb2366cSJaegeuk Kim ni.ino = inode->i_ino; 2016479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, NEW_ADDR, false); 2017205b9822SJaegeuk Kim f2fs_i_xnid_write(inode, new_xnid); 2018abb2366cSJaegeuk Kim 2019abb2366cSJaegeuk Kim /* 3: update xattr blkaddr */ 2020abb2366cSJaegeuk Kim refresh_sit_entry(sbi, NEW_ADDR, blkaddr); 2021479f40c4SJaegeuk Kim set_node_addr(sbi, &ni, blkaddr, false); 2022abb2366cSJaegeuk Kim } 2023abb2366cSJaegeuk Kim 2024e05df3b1SJaegeuk Kim int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) 2025e05df3b1SJaegeuk Kim { 202658bfaf44SJaegeuk Kim struct f2fs_inode *src, *dst; 2027e05df3b1SJaegeuk Kim nid_t ino = ino_of_node(page); 2028e05df3b1SJaegeuk Kim struct node_info old_ni, new_ni; 2029e05df3b1SJaegeuk Kim struct page *ipage; 2030e05df3b1SJaegeuk Kim 2031e8271fa3SJaegeuk Kim get_node_info(sbi, ino, &old_ni); 2032e8271fa3SJaegeuk Kim 2033e8271fa3SJaegeuk Kim if (unlikely(old_ni.blk_addr != NULL_ADDR)) 2034e8271fa3SJaegeuk Kim return -EINVAL; 2035e8ea9b3dSJaegeuk Kim retry: 2036300e129cSJaegeuk Kim ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); 2037e8ea9b3dSJaegeuk Kim if (!ipage) { 2038e8ea9b3dSJaegeuk Kim congestion_wait(BLK_RW_ASYNC, HZ/50); 2039e8ea9b3dSJaegeuk Kim goto retry; 2040e8ea9b3dSJaegeuk Kim } 2041e05df3b1SJaegeuk Kim 2042e05df3b1SJaegeuk Kim /* Should not use this inode from free nid list */ 2043e05df3b1SJaegeuk Kim remove_free_nid(NM_I(sbi), ino); 2044e05df3b1SJaegeuk Kim 2045237c0790SJaegeuk Kim if (!PageUptodate(ipage)) 2046e05df3b1SJaegeuk Kim SetPageUptodate(ipage); 2047e05df3b1SJaegeuk Kim fill_node_footer(ipage, ino, ino, 0, true); 2048e05df3b1SJaegeuk Kim 204958bfaf44SJaegeuk Kim src = F2FS_INODE(page); 205058bfaf44SJaegeuk Kim dst = F2FS_INODE(ipage); 2051e05df3b1SJaegeuk Kim 205258bfaf44SJaegeuk Kim memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); 205358bfaf44SJaegeuk Kim dst->i_size = 0; 205458bfaf44SJaegeuk Kim dst->i_blocks = cpu_to_le64(1); 205558bfaf44SJaegeuk Kim dst->i_links = cpu_to_le32(1); 205658bfaf44SJaegeuk Kim dst->i_xattr_nid = 0; 2057617deb8cSJaegeuk Kim dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; 2058e05df3b1SJaegeuk Kim 2059e05df3b1SJaegeuk Kim new_ni = old_ni; 2060e05df3b1SJaegeuk Kim new_ni.ino = ino; 2061e05df3b1SJaegeuk Kim 2062cfb271d4SChao Yu if (unlikely(!inc_valid_node_count(sbi, NULL))) 206365e5cd0aSJaegeuk Kim WARN_ON(1); 2064479f40c4SJaegeuk Kim set_node_addr(sbi, &new_ni, NEW_ADDR, false); 2065e05df3b1SJaegeuk Kim inc_valid_inode_count(sbi); 2066617deb8cSJaegeuk Kim set_page_dirty(ipage); 2067e05df3b1SJaegeuk Kim f2fs_put_page(ipage, 1); 2068e05df3b1SJaegeuk Kim return 0; 2069e05df3b1SJaegeuk Kim } 2070e05df3b1SJaegeuk Kim 2071e05df3b1SJaegeuk Kim int restore_node_summary(struct f2fs_sb_info *sbi, 2072e05df3b1SJaegeuk Kim unsigned int segno, struct f2fs_summary_block *sum) 2073e05df3b1SJaegeuk Kim { 2074e05df3b1SJaegeuk Kim struct f2fs_node *rn; 2075e05df3b1SJaegeuk Kim struct f2fs_summary *sum_entry; 2076e05df3b1SJaegeuk Kim block_t addr; 207790a893c7SJaegeuk Kim int bio_blocks = MAX_BIO_BLOCKS(sbi); 20789ecf4b80SChao Yu int i, idx, last_offset, nrpages; 2079e05df3b1SJaegeuk Kim 2080e05df3b1SJaegeuk Kim /* scan the node segment */ 2081e05df3b1SJaegeuk Kim last_offset = sbi->blocks_per_seg; 2082e05df3b1SJaegeuk Kim addr = START_BLOCK(sbi, segno); 2083e05df3b1SJaegeuk Kim sum_entry = &sum->entries[0]; 2084e05df3b1SJaegeuk Kim 20859ecf4b80SChao Yu for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { 20869af0ff1cSChao Yu nrpages = min(last_offset - i, bio_blocks); 2087393ff91fSJaegeuk Kim 20889af0ff1cSChao Yu /* readahead node pages */ 208926879fb1SChao Yu ra_meta_pages(sbi, addr, nrpages, META_POR, true); 20909af0ff1cSChao Yu 20919ecf4b80SChao Yu for (idx = addr; idx < addr + nrpages; idx++) { 20922b947003SChao Yu struct page *page = get_tmp_page(sbi, idx); 2093393ff91fSJaegeuk Kim 20949ecf4b80SChao Yu rn = F2FS_NODE(page); 2095393ff91fSJaegeuk Kim sum_entry->nid = rn->footer.nid; 2096393ff91fSJaegeuk Kim sum_entry->version = 0; 2097393ff91fSJaegeuk Kim sum_entry->ofs_in_node = 0; 20989af0ff1cSChao Yu sum_entry++; 20999ecf4b80SChao Yu f2fs_put_page(page, 1); 21009af0ff1cSChao Yu } 2101bac4eef6SChao Yu 21029ecf4b80SChao Yu invalidate_mapping_pages(META_MAPPING(sbi), addr, 2103bac4eef6SChao Yu addr + nrpages); 21049af0ff1cSChao Yu } 21059ecf4b80SChao Yu return 0; 2106e05df3b1SJaegeuk Kim } 2107e05df3b1SJaegeuk Kim 2108aec71382SChao Yu static void remove_nats_in_journal(struct f2fs_sb_info *sbi) 2109e05df3b1SJaegeuk Kim { 2110e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2111e05df3b1SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2112b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2113e05df3b1SJaegeuk Kim int i; 2114e05df3b1SJaegeuk Kim 2115b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2116dfc08a12SChao Yu for (i = 0; i < nats_in_cursum(journal); i++) { 2117e05df3b1SJaegeuk Kim struct nat_entry *ne; 2118e05df3b1SJaegeuk Kim struct f2fs_nat_entry raw_ne; 2119dfc08a12SChao Yu nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); 2120e05df3b1SJaegeuk Kim 2121dfc08a12SChao Yu raw_ne = nat_in_journal(journal, i); 21229be32d72SJaegeuk Kim 2123e05df3b1SJaegeuk Kim ne = __lookup_nat_cache(nm_i, nid); 2124e05df3b1SJaegeuk Kim if (!ne) { 21259be32d72SJaegeuk Kim ne = grab_nat_entry(nm_i, nid); 212694dac22eSChao Yu node_info_from_raw_nat(&ne->ni, &raw_ne); 21279be32d72SJaegeuk Kim } 2128e05df3b1SJaegeuk Kim __set_nat_cache_dirty(nm_i, ne); 2129e05df3b1SJaegeuk Kim } 2130dfc08a12SChao Yu update_nats_in_cursum(journal, -i); 2131b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2132e05df3b1SJaegeuk Kim } 2133e05df3b1SJaegeuk Kim 2134309cc2b6SJaegeuk Kim static void __adjust_nat_entry_set(struct nat_entry_set *nes, 2135309cc2b6SJaegeuk Kim struct list_head *head, int max) 2136e05df3b1SJaegeuk Kim { 2137309cc2b6SJaegeuk Kim struct nat_entry_set *cur; 2138e05df3b1SJaegeuk Kim 2139309cc2b6SJaegeuk Kim if (nes->entry_cnt >= max) 2140309cc2b6SJaegeuk Kim goto add_out; 2141e05df3b1SJaegeuk Kim 2142309cc2b6SJaegeuk Kim list_for_each_entry(cur, head, set_list) { 2143309cc2b6SJaegeuk Kim if (cur->entry_cnt >= nes->entry_cnt) { 2144309cc2b6SJaegeuk Kim list_add(&nes->set_list, cur->set_list.prev); 2145309cc2b6SJaegeuk Kim return; 2146309cc2b6SJaegeuk Kim } 2147309cc2b6SJaegeuk Kim } 2148309cc2b6SJaegeuk Kim add_out: 2149309cc2b6SJaegeuk Kim list_add_tail(&nes->set_list, head); 2150aec71382SChao Yu } 2151aec71382SChao Yu 2152309cc2b6SJaegeuk Kim static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, 2153309cc2b6SJaegeuk Kim struct nat_entry_set *set) 2154309cc2b6SJaegeuk Kim { 2155309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2156b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 2157309cc2b6SJaegeuk Kim nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; 2158309cc2b6SJaegeuk Kim bool to_journal = true; 2159309cc2b6SJaegeuk Kim struct f2fs_nat_block *nat_blk; 2160309cc2b6SJaegeuk Kim struct nat_entry *ne, *cur; 2161309cc2b6SJaegeuk Kim struct page *page = NULL; 2162aec71382SChao Yu 2163aec71382SChao Yu /* 2164aec71382SChao Yu * there are two steps to flush nat entries: 2165aec71382SChao Yu * #1, flush nat entries to journal in current hot data summary block. 2166aec71382SChao Yu * #2, flush nat entries to nat page. 2167aec71382SChao Yu */ 2168dfc08a12SChao Yu if (!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) 2169aec71382SChao Yu to_journal = false; 2170aec71382SChao Yu 2171aec71382SChao Yu if (to_journal) { 2172b7ad7512SChao Yu down_write(&curseg->journal_rwsem); 2173aec71382SChao Yu } else { 2174e05df3b1SJaegeuk Kim page = get_next_nat_page(sbi, start_nid); 2175e05df3b1SJaegeuk Kim nat_blk = page_address(page); 21769850cf4aSJaegeuk Kim f2fs_bug_on(sbi, !nat_blk); 2177e05df3b1SJaegeuk Kim } 2178e05df3b1SJaegeuk Kim 2179aec71382SChao Yu /* flush dirty nats in nat entry set */ 2180309cc2b6SJaegeuk Kim list_for_each_entry_safe(ne, cur, &set->entry_list, list) { 2181aec71382SChao Yu struct f2fs_nat_entry *raw_ne; 2182aec71382SChao Yu nid_t nid = nat_get_nid(ne); 2183aec71382SChao Yu int offset; 2184aec71382SChao Yu 2185309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NEW_ADDR) 2186309cc2b6SJaegeuk Kim continue; 2187309cc2b6SJaegeuk Kim 2188aec71382SChao Yu if (to_journal) { 2189dfc08a12SChao Yu offset = lookup_journal_in_cursum(journal, 2190aec71382SChao Yu NAT_JOURNAL, nid, 1); 21919850cf4aSJaegeuk Kim f2fs_bug_on(sbi, offset < 0); 2192dfc08a12SChao Yu raw_ne = &nat_in_journal(journal, offset); 2193dfc08a12SChao Yu nid_in_journal(journal, offset) = cpu_to_le32(nid); 2194aec71382SChao Yu } else { 2195aec71382SChao Yu raw_ne = &nat_blk->entries[nid - start_nid]; 2196aec71382SChao Yu } 2197aec71382SChao Yu raw_nat_from_node_info(raw_ne, &ne->ni); 219888bd02c9SJaegeuk Kim nat_reset_flag(ne); 2199309cc2b6SJaegeuk Kim __clear_nat_cache_dirty(NM_I(sbi), ne); 2200309cc2b6SJaegeuk Kim if (nat_get_blkaddr(ne) == NULL_ADDR) 2201309cc2b6SJaegeuk Kim add_free_nid(sbi, nid, false); 2202e05df3b1SJaegeuk Kim } 2203aec71382SChao Yu 2204aec71382SChao Yu if (to_journal) 2205b7ad7512SChao Yu up_write(&curseg->journal_rwsem); 2206aec71382SChao Yu else 2207e05df3b1SJaegeuk Kim f2fs_put_page(page, 1); 2208aec71382SChao Yu 220980ec2e91SChangman Lee f2fs_bug_on(sbi, set->entry_cnt); 221080ec2e91SChangman Lee 2211309cc2b6SJaegeuk Kim radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); 2212309cc2b6SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, set); 2213309cc2b6SJaegeuk Kim } 2214aec71382SChao Yu 2215309cc2b6SJaegeuk Kim /* 2216309cc2b6SJaegeuk Kim * This function is called during the checkpointing process. 2217309cc2b6SJaegeuk Kim */ 2218309cc2b6SJaegeuk Kim void flush_nat_entries(struct f2fs_sb_info *sbi) 2219309cc2b6SJaegeuk Kim { 2220309cc2b6SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2221309cc2b6SJaegeuk Kim struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); 2222b7ad7512SChao Yu struct f2fs_journal *journal = curseg->journal; 22237aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2224309cc2b6SJaegeuk Kim struct nat_entry_set *set, *tmp; 2225309cc2b6SJaegeuk Kim unsigned int found; 2226309cc2b6SJaegeuk Kim nid_t set_idx = 0; 2227309cc2b6SJaegeuk Kim LIST_HEAD(sets); 2228309cc2b6SJaegeuk Kim 222920d047c8SChangman Lee if (!nm_i->dirty_nat_cnt) 223020d047c8SChangman Lee return; 2231a5131193SJaegeuk Kim 2232b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2233a5131193SJaegeuk Kim 2234309cc2b6SJaegeuk Kim /* 2235309cc2b6SJaegeuk Kim * if there are no enough space in journal to store dirty nat 2236309cc2b6SJaegeuk Kim * entries, remove all entries from journal and merge them 2237309cc2b6SJaegeuk Kim * into nat entry set. 2238309cc2b6SJaegeuk Kim */ 2239dfc08a12SChao Yu if (!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) 2240309cc2b6SJaegeuk Kim remove_nats_in_journal(sbi); 2241309cc2b6SJaegeuk Kim 2242309cc2b6SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 22437aed0d45SJaegeuk Kim set_idx, SETVEC_SIZE, setvec))) { 2244309cc2b6SJaegeuk Kim unsigned idx; 2245309cc2b6SJaegeuk Kim set_idx = setvec[found - 1]->set + 1; 2246309cc2b6SJaegeuk Kim for (idx = 0; idx < found; idx++) 2247309cc2b6SJaegeuk Kim __adjust_nat_entry_set(setvec[idx], &sets, 2248dfc08a12SChao Yu MAX_NAT_JENTRIES(journal)); 2249309cc2b6SJaegeuk Kim } 2250309cc2b6SJaegeuk Kim 2251309cc2b6SJaegeuk Kim /* flush dirty nats in nat entry set */ 2252309cc2b6SJaegeuk Kim list_for_each_entry_safe(set, tmp, &sets, set_list) 2253309cc2b6SJaegeuk Kim __flush_nat_entry_set(sbi, set); 2254309cc2b6SJaegeuk Kim 2255b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2256a5131193SJaegeuk Kim 22579850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); 2258e05df3b1SJaegeuk Kim } 2259e05df3b1SJaegeuk Kim 2260e05df3b1SJaegeuk Kim static int init_node_manager(struct f2fs_sb_info *sbi) 2261e05df3b1SJaegeuk Kim { 2262e05df3b1SJaegeuk Kim struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); 2263e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2264e05df3b1SJaegeuk Kim unsigned char *version_bitmap; 2265e05df3b1SJaegeuk Kim unsigned int nat_segs, nat_blocks; 2266e05df3b1SJaegeuk Kim 2267e05df3b1SJaegeuk Kim nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); 2268e05df3b1SJaegeuk Kim 2269e05df3b1SJaegeuk Kim /* segment_count_nat includes pair segment so divide to 2. */ 2270e05df3b1SJaegeuk Kim nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; 2271e05df3b1SJaegeuk Kim nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); 2272b63da15eSJaegeuk Kim 22737ee0eeabSJaegeuk Kim nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; 22747ee0eeabSJaegeuk Kim 2275b63da15eSJaegeuk Kim /* not used nids: 0, node, meta, (and root counted as valid node) */ 2276c200b1aaSChao Yu nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; 2277e05df3b1SJaegeuk Kim nm_i->fcnt = 0; 2278e05df3b1SJaegeuk Kim nm_i->nat_cnt = 0; 2279cdfc41c1SJaegeuk Kim nm_i->ram_thresh = DEF_RAM_THRESHOLD; 2280ea1a29a0SChao Yu nm_i->ra_nid_pages = DEF_RA_NID_PAGES; 22812304cb0cSChao Yu nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; 2282e05df3b1SJaegeuk Kim 22838a7ed66aSJaegeuk Kim INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); 2284e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->free_nid_list); 2285769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); 2286769ec6e5SJaegeuk Kim INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); 2287e05df3b1SJaegeuk Kim INIT_LIST_HEAD(&nm_i->nat_entries); 2288e05df3b1SJaegeuk Kim 2289e05df3b1SJaegeuk Kim mutex_init(&nm_i->build_lock); 2290e05df3b1SJaegeuk Kim spin_lock_init(&nm_i->free_nid_list_lock); 2291b873b798SJaegeuk Kim init_rwsem(&nm_i->nat_tree_lock); 2292e05df3b1SJaegeuk Kim 2293e05df3b1SJaegeuk Kim nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); 229479b5793bSAlexandru Gheorghiu nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); 2295e05df3b1SJaegeuk Kim version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); 2296e05df3b1SJaegeuk Kim if (!version_bitmap) 2297e05df3b1SJaegeuk Kim return -EFAULT; 2298e05df3b1SJaegeuk Kim 229979b5793bSAlexandru Gheorghiu nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, 230079b5793bSAlexandru Gheorghiu GFP_KERNEL); 230179b5793bSAlexandru Gheorghiu if (!nm_i->nat_bitmap) 230279b5793bSAlexandru Gheorghiu return -ENOMEM; 2303e05df3b1SJaegeuk Kim return 0; 2304e05df3b1SJaegeuk Kim } 2305e05df3b1SJaegeuk Kim 2306e05df3b1SJaegeuk Kim int build_node_manager(struct f2fs_sb_info *sbi) 2307e05df3b1SJaegeuk Kim { 2308e05df3b1SJaegeuk Kim int err; 2309e05df3b1SJaegeuk Kim 2310e05df3b1SJaegeuk Kim sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); 2311e05df3b1SJaegeuk Kim if (!sbi->nm_info) 2312e05df3b1SJaegeuk Kim return -ENOMEM; 2313e05df3b1SJaegeuk Kim 2314e05df3b1SJaegeuk Kim err = init_node_manager(sbi); 2315e05df3b1SJaegeuk Kim if (err) 2316e05df3b1SJaegeuk Kim return err; 2317e05df3b1SJaegeuk Kim 2318e05df3b1SJaegeuk Kim build_free_nids(sbi); 2319e05df3b1SJaegeuk Kim return 0; 2320e05df3b1SJaegeuk Kim } 2321e05df3b1SJaegeuk Kim 2322e05df3b1SJaegeuk Kim void destroy_node_manager(struct f2fs_sb_info *sbi) 2323e05df3b1SJaegeuk Kim { 2324e05df3b1SJaegeuk Kim struct f2fs_nm_info *nm_i = NM_I(sbi); 2325e05df3b1SJaegeuk Kim struct free_nid *i, *next_i; 2326e05df3b1SJaegeuk Kim struct nat_entry *natvec[NATVEC_SIZE]; 23277aed0d45SJaegeuk Kim struct nat_entry_set *setvec[SETVEC_SIZE]; 2328e05df3b1SJaegeuk Kim nid_t nid = 0; 2329e05df3b1SJaegeuk Kim unsigned int found; 2330e05df3b1SJaegeuk Kim 2331e05df3b1SJaegeuk Kim if (!nm_i) 2332e05df3b1SJaegeuk Kim return; 2333e05df3b1SJaegeuk Kim 2334e05df3b1SJaegeuk Kim /* destroy free nid list */ 2335e05df3b1SJaegeuk Kim spin_lock(&nm_i->free_nid_list_lock); 2336e05df3b1SJaegeuk Kim list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { 23379850cf4aSJaegeuk Kim f2fs_bug_on(sbi, i->state == NID_ALLOC); 23388a7ed66aSJaegeuk Kim __del_from_free_nid_list(nm_i, i); 2339e05df3b1SJaegeuk Kim nm_i->fcnt--; 2340cf0ee0f0SChao Yu spin_unlock(&nm_i->free_nid_list_lock); 2341cf0ee0f0SChao Yu kmem_cache_free(free_nid_slab, i); 2342cf0ee0f0SChao Yu spin_lock(&nm_i->free_nid_list_lock); 2343e05df3b1SJaegeuk Kim } 23449850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->fcnt); 2345e05df3b1SJaegeuk Kim spin_unlock(&nm_i->free_nid_list_lock); 2346e05df3b1SJaegeuk Kim 2347e05df3b1SJaegeuk Kim /* destroy nat cache */ 2348b873b798SJaegeuk Kim down_write(&nm_i->nat_tree_lock); 2349e05df3b1SJaegeuk Kim while ((found = __gang_lookup_nat_cache(nm_i, 2350e05df3b1SJaegeuk Kim nid, NATVEC_SIZE, natvec))) { 2351e05df3b1SJaegeuk Kim unsigned idx; 23527aed0d45SJaegeuk Kim 2353b6ce391eSGu Zheng nid = nat_get_nid(natvec[found - 1]) + 1; 2354b6ce391eSGu Zheng for (idx = 0; idx < found; idx++) 2355b6ce391eSGu Zheng __del_from_nat_cache(nm_i, natvec[idx]); 2356e05df3b1SJaegeuk Kim } 23579850cf4aSJaegeuk Kim f2fs_bug_on(sbi, nm_i->nat_cnt); 23587aed0d45SJaegeuk Kim 23597aed0d45SJaegeuk Kim /* destroy nat set cache */ 23607aed0d45SJaegeuk Kim nid = 0; 23617aed0d45SJaegeuk Kim while ((found = __gang_lookup_nat_set(nm_i, 23627aed0d45SJaegeuk Kim nid, SETVEC_SIZE, setvec))) { 23637aed0d45SJaegeuk Kim unsigned idx; 23647aed0d45SJaegeuk Kim 23657aed0d45SJaegeuk Kim nid = setvec[found - 1]->set + 1; 23667aed0d45SJaegeuk Kim for (idx = 0; idx < found; idx++) { 23677aed0d45SJaegeuk Kim /* entry_cnt is not zero, when cp_error was occurred */ 23687aed0d45SJaegeuk Kim f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); 23697aed0d45SJaegeuk Kim radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); 23707aed0d45SJaegeuk Kim kmem_cache_free(nat_entry_set_slab, setvec[idx]); 23717aed0d45SJaegeuk Kim } 23727aed0d45SJaegeuk Kim } 2373b873b798SJaegeuk Kim up_write(&nm_i->nat_tree_lock); 2374e05df3b1SJaegeuk Kim 2375e05df3b1SJaegeuk Kim kfree(nm_i->nat_bitmap); 2376e05df3b1SJaegeuk Kim sbi->nm_info = NULL; 2377e05df3b1SJaegeuk Kim kfree(nm_i); 2378e05df3b1SJaegeuk Kim } 2379e05df3b1SJaegeuk Kim 23806e6093a8SNamjae Jeon int __init create_node_manager_caches(void) 2381e05df3b1SJaegeuk Kim { 2382e05df3b1SJaegeuk Kim nat_entry_slab = f2fs_kmem_cache_create("nat_entry", 2383e8512d2eSGu Zheng sizeof(struct nat_entry)); 2384e05df3b1SJaegeuk Kim if (!nat_entry_slab) 2385aec71382SChao Yu goto fail; 2386e05df3b1SJaegeuk Kim 2387e05df3b1SJaegeuk Kim free_nid_slab = f2fs_kmem_cache_create("free_nid", 2388e8512d2eSGu Zheng sizeof(struct free_nid)); 2389aec71382SChao Yu if (!free_nid_slab) 2390ce3e6d25SMarkus Elfring goto destroy_nat_entry; 2391aec71382SChao Yu 2392aec71382SChao Yu nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", 2393aec71382SChao Yu sizeof(struct nat_entry_set)); 2394aec71382SChao Yu if (!nat_entry_set_slab) 2395ce3e6d25SMarkus Elfring goto destroy_free_nid; 2396e05df3b1SJaegeuk Kim return 0; 2397aec71382SChao Yu 2398ce3e6d25SMarkus Elfring destroy_free_nid: 2399aec71382SChao Yu kmem_cache_destroy(free_nid_slab); 2400ce3e6d25SMarkus Elfring destroy_nat_entry: 2401aec71382SChao Yu kmem_cache_destroy(nat_entry_slab); 2402aec71382SChao Yu fail: 2403aec71382SChao Yu return -ENOMEM; 2404e05df3b1SJaegeuk Kim } 2405e05df3b1SJaegeuk Kim 2406e05df3b1SJaegeuk Kim void destroy_node_manager_caches(void) 2407e05df3b1SJaegeuk Kim { 2408aec71382SChao Yu kmem_cache_destroy(nat_entry_set_slab); 2409e05df3b1SJaegeuk Kim kmem_cache_destroy(free_nid_slab); 2410e05df3b1SJaegeuk Kim kmem_cache_destroy(nat_entry_slab); 2411e05df3b1SJaegeuk Kim } 2412