diff options
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/node.c | 42 |
2 files changed, 31 insertions, 13 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index fe80eb637075..0acf8889a58f 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -2813,7 +2813,7 @@ int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, bool do_balance, enum iostat_type io_type); -void f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount); +int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount); bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid); void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid); void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid); diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 3d1240949d87..1d590c64bc85 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1977,7 +1977,7 @@ static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) kmem_cache_free(free_nid_slab, i); } -static void scan_nat_page(struct f2fs_sb_info *sbi, +static int scan_nat_page(struct f2fs_sb_info *sbi, struct page *nat_page, nid_t start_nid) { struct f2fs_nm_info *nm_i = NM_I(sbi); @@ -1995,7 +1995,10 @@ static void scan_nat_page(struct f2fs_sb_info *sbi, break; blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); - f2fs_bug_on(sbi, blk_addr == NEW_ADDR); + + if (blk_addr == NEW_ADDR) + return -EINVAL; + if (blk_addr == NULL_ADDR) { add_free_nid(sbi, start_nid, true, true); } else { @@ -2004,6 +2007,8 @@ static void scan_nat_page(struct f2fs_sb_info *sbi, spin_unlock(&NM_I(sbi)->nid_list_lock); } } + + return 0; } static void scan_curseg_cache(struct f2fs_sb_info *sbi) @@ -2059,11 +2064,11 @@ out: up_read(&nm_i->nat_tree_lock); } -static void __f2fs_build_free_nids(struct f2fs_sb_info *sbi, +static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) { struct f2fs_nm_info *nm_i = NM_I(sbi); - int i = 0; + int i = 0, ret; nid_t nid = nm_i->next_scan_nid; if (unlikely(nid >= nm_i->max_nid)) @@ -2071,17 +2076,17 @@ static void __f2fs_build_free_nids(struct f2fs_sb_info *sbi, /* Enough entries */ if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) - return; + return 0; if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) - return; + return 0; if (!mount) { /* try to find free nids in free_nid_bitmap */ scan_free_nid_bits(sbi); if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) - return; + return 0; } /* readahead nat pages to be scanned */ @@ -2095,8 +2100,16 @@ static void __f2fs_build_free_nids(struct f2fs_sb_info *sbi, nm_i->nat_block_bitmap)) { struct page *page = get_current_nat_page(sbi, nid); - scan_nat_page(sbi, page, nid); + ret = scan_nat_page(sbi, page, nid); f2fs_put_page(page, 1); + + if (ret) { + up_read(&nm_i->nat_tree_lock); + f2fs_bug_on(sbi, !mount); + f2fs_msg(sbi->sb, KERN_ERR, + "NAT is corrupt, run fsck to fix it"); + return -EINVAL; + } } nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); @@ -2117,13 +2130,19 @@ static void __f2fs_build_free_nids(struct f2fs_sb_info *sbi, f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), nm_i->ra_nid_pages, META_NAT, false); + + return 0; } -void f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) +int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) { + int ret; + mutex_lock(&NM_I(sbi)->build_lock); - __f2fs_build_free_nids(sbi, sync, mount); + ret = __f2fs_build_free_nids(sbi, sync, mount); mutex_unlock(&NM_I(sbi)->build_lock); + + return ret; } /* @@ -2817,8 +2836,7 @@ int f2fs_build_node_manager(struct f2fs_sb_info *sbi) /* load free nid status from nat_bits table */ load_free_nid_bitmap(sbi); - f2fs_build_free_nids(sbi, true, true); - return 0; + return f2fs_build_free_nids(sbi, true, true); } void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) |