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authorJan Schmidt <list.btrfs@jan-o-sch.net>2012-04-13 12:28:00 +0200
committerDavid Sterba <dsterba@suse.cz>2012-04-18 19:22:21 +0200
commitaefc1eb13ebbb86c5ffade8a9e2425cd71032d7e (patch)
tree36acddddf6f4b50877b22e683704bc2cbaf4d3b5
parent4735fb282830c0966b301dabcccf4753fa6604bb (diff)
downloadlinux-linaro-stable-aefc1eb13ebbb86c5ffade8a9e2425cd71032d7e.tar.gz
Btrfs: don't call free_extent_buffer twice in iterate_irefs
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@jan-o-sch.net>
-rw-r--r--fs/btrfs/backref.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b332ff04c5ee..fb56bcc80377 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);
}