diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/free-space-cache.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 63731a1fb0a1..d634a7e42207 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -420,7 +420,14 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info, spin_lock(&block_group->tree_lock); ret = link_free_space(block_group, e); spin_unlock(&block_group->tree_lock); - BUG_ON(ret); + if (ret) { + printk(KERN_ERR "Duplicate entries in " + "free space cache, dumping\n"); + kunmap(page); + unlock_page(page); + page_cache_release(page); + goto free_cache; + } } else { e->bitmap = kzalloc(PAGE_CACHE_SIZE, GFP_NOFS); if (!e->bitmap) { @@ -437,6 +444,14 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info, recalculate_thresholds(block_group); spin_unlock(&block_group->tree_lock); list_add_tail(&e->list, &bitmaps); + if (ret) { + printk(KERN_ERR "Duplicate entries in " + "free space cache, dumping\n"); + kunmap(page); + unlock_page(page); + page_cache_release(page); + goto free_cache; + } } num_entries--; @@ -909,10 +924,16 @@ static int tree_insert_offset(struct rb_root *root, u64 offset, * logically. */ if (bitmap) { - WARN_ON(info->bitmap); + if (info->bitmap) { + WARN_ON_ONCE(1); + return -EEXIST; + } p = &(*p)->rb_right; } else { - WARN_ON(!info->bitmap); + if (!info->bitmap) { + WARN_ON_ONCE(1); + return -EEXIST; + } p = &(*p)->rb_left; } } |