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Subject[PATCH 3.16 106/233] btrfs: fix memory leak in update_space_info failure path
3.16.48-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Jeff Mahoney <jeffm@suse.com>

commit 896533a7da929136d0432713f02a3edffece2826 upstream.

If we fail to add the space_info kobject, we'll leak the memory
for the percpu counter.

Fixes: 6ab0a2029c (btrfs: publish allocation data in sysfs)
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/btrfs/extent-tree.c | 1 +
1 file changed, 1 insertion(+)

--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3526,6 +3526,7 @@ static int update_space_info(struct btrf
info->space_info_kobj, "%s",
alloc_name(found->flags));
if (ret) {
+ percpu_counter_destroy(&found->total_bytes_pinned);
kfree(found);
return ret;
}
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