Btrfs: don't leak reloc root nodes on error

We don't track the reloc roots in any sort of normal way, so the only way the
root/commit_root nodes get free'd is if the relocation finishes successfully and
the reloc root is deleted.  Fix this by free'ing them in free_reloc_roots.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 8e7c78ba77d9..3c0973a68572 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2357,6 +2357,10 @@ void free_reloc_roots(struct list_head *list)
         while (!list_empty(list)) {
                 reloc_root = list_entry(list->next, struct btrfs_root,
                                         root_list);
+                free_extent_buffer(reloc_root->node);
+                free_extent_buffer(reloc_root->commit_root);
+                reloc_root->node = NULL;
+                reloc_root->commit_root = NULL;
                 __del_reloc_root(reloc_root);
         }
 }