diff options
Diffstat (limited to 'fs/f2fs/node.c')
| -rw-r--r-- | fs/f2fs/node.c | 77 |
1 files changed, 54 insertions, 23 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 01177ecdeab8..f4fe54047fb7 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -304,8 +304,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, new_blkaddr == NULL_ADDR); f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && new_blkaddr == NEW_ADDR); - f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && - nat_get_blkaddr(e) != NULL_ADDR && + f2fs_bug_on(sbi, is_valid_data_blkaddr(sbi, nat_get_blkaddr(e)) && new_blkaddr == NEW_ADDR); /* increment version no as node is removed */ @@ -320,7 +319,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, /* change address */ nat_set_blkaddr(e, new_blkaddr); - if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) + if (!is_valid_data_blkaddr(sbi, new_blkaddr)) set_nat_flag(e, IS_CHECKPOINTED, false); __set_nat_cache_dirty(nm_i, e); @@ -1463,7 +1462,9 @@ next_step: !is_cold_node(page))) continue; lock_node: - if (!trylock_page(page)) + if (wbc->sync_mode == WB_SYNC_ALL) + lock_page(page); + else if (!trylock_page(page)) continue; if (unlikely(page->mapping != NODE_MAPPING(sbi))) { @@ -1604,6 +1605,12 @@ static int f2fs_write_node_page(struct page *page, return 0; } + if (__is_valid_data_blkaddr(ni.blk_addr) && + !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC)) { + up_read(&sbi->node_write); + goto redirty_out; + } + set_page_writeback(page); fio.old_blkaddr = ni.blk_addr; write_node_page(nid, &fio); @@ -1702,8 +1709,9 @@ static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) { struct f2fs_nm_info *nm_i = NM_I(sbi); - struct free_nid *i; + struct free_nid *i, *e; struct nat_entry *ne; + int err = -EINVAL; if (!available_free_memory(sbi, FREE_NIDS)) return -1; @@ -1712,35 +1720,58 @@ static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) if (unlikely(nid == 0)) return 0; - if (build) { - /* do not add allocated nids */ - ne = __lookup_nat_cache(nm_i, nid); - if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || - nat_get_blkaddr(ne) != NULL_ADDR)) - return 0; - } - i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); i->nid = nid; i->state = NID_NEW; - if (radix_tree_preload(GFP_NOFS)) { - kmem_cache_free(free_nid_slab, i); - return 0; - } + if (radix_tree_preload(GFP_NOFS)) + goto err; spin_lock(&nm_i->free_nid_list_lock); - if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { - spin_unlock(&nm_i->free_nid_list_lock); - radix_tree_preload_end(); - kmem_cache_free(free_nid_slab, i); - return 0; + + if (build) { + /* + * Thread A Thread B + * - f2fs_create + * - f2fs_new_inode + * - alloc_nid + * - __insert_nid_to_list(ALLOC_NID_LIST) + * - f2fs_balance_fs_bg + * - build_free_nids + * - __build_free_nids + * - scan_nat_page + * - add_free_nid + * - __lookup_nat_cache + * - f2fs_add_link + * - init_inode_metadata + * - new_inode_page + * - new_node_page + * - set_node_addr + * - alloc_nid_done + * - __remove_nid_from_list(ALLOC_NID_LIST) + * - __insert_nid_to_list(FREE_NID_LIST) + */ + ne = __lookup_nat_cache(nm_i, nid); + if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || + nat_get_blkaddr(ne) != NULL_ADDR)) + goto err_out; + + e = __lookup_free_nid_list(nm_i, nid); + if (e) + goto err_out; } + if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) + goto err_out; + err = 0; list_add_tail(&i->list, &nm_i->free_nid_list); nm_i->fcnt++; +err_out: spin_unlock(&nm_i->free_nid_list_lock); radix_tree_preload_end(); - return 1; +err: + if (err) + kmem_cache_free(free_nid_slab, i); + return !err; } static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) |