Avoid calling free_extent_buffer more than once when the iterator function
returns non-zero. The only code that uses this is scrub repair for corrupted
nodatasum blocks.
Signed-off-by: Jan Schmidt <list.btrfs@xxxxxxxxxxxxx>
---
fs/btrfs/backref.c | 8 +++-----
1 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index f4e9074..8be551c 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1247,7 +1247,7 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root,
struct btrfs_path *path,
iterate_irefs_t *iterate, void *ctx)
{
- int ret;
+ int ret = 0;
int slot;
u32 cur;
u32 len;
@@ -1259,7 +1259,7 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root,
struct btrfs_inode_ref *iref;
struct btrfs_key found_key;
- while (1) {
+ while (!ret) {
ret = inode_ref_info(inum, parent ? parent+1 : 0, fs_root, path,
&found_key);
if (ret < 0)
@@ -1288,10 +1288,8 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root,
(unsigned long long)found_key.objectid,
(unsigned long long)fs_root->objectid);
ret = iterate(parent, iref, eb, ctx);
- if (ret) {
- free_extent_buffer(eb);
+ if (ret)
break;
- }
len = sizeof(*iref) + name_len;
iref = (struct btrfs_inode_ref *)((char *)iref + len);
}
--
1.7.3.4
--
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