diff mbox series

[30/42] btrfs: handle the loop btrfs_cow_block error in replace_path

Message ID cbf9fbdfc9dac05efbf263713e7af55f77c74a60.1605215646.git.josef@toxicpanda.com (mailing list archive)
State New, archived
Headers show
Series Cleanup error handling in relocation | expand

Commit Message

Josef Bacik Nov. 12, 2020, 9:18 p.m. UTC 
As we loop through the path to replace it, we will have to cow each node
we hit on the path down to the lowest_level.  If this fails we simply
unlock and free the block and break from the loop.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/relocation.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 07092d7a4d0e..52ae6bba2261 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1294,7 +1294,11 @@  int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc,
 				ret = btrfs_cow_block(trans, dest, eb, parent,
 						      slot, &eb,
 						      BTRFS_NESTING_COW);
-				BUG_ON(ret);
+				if (ret) {
+					btrfs_tree_unlock(eb);
+					free_extent_buffer(eb);
+					break;
+				}
 			}
 
 			btrfs_tree_unlock(parent);