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Diffstat (limited to 'fs/btrfs/free-space-cache.c')
-rw-r--r--fs/btrfs/free-space-cache.c27
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;
}
}