From 45b87c5d2557a327bb702d00040cfbf2271b56ed Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 12 Mar 2021 15:25:22 -0500 Subject: [PATCH] btrfs: handle btrfs_cow_block errors in replace_path If we error out COWing the root node when doing a replace_path then we simply unlock and free the buffer and return the error. Reviewed-by: Qu Wenruo Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/relocation.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 62b6d3f1fbea..f1702157532a 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1231,7 +1231,11 @@ again: if (cow) { ret = btrfs_cow_block(trans, dest, eb, NULL, 0, &eb, BTRFS_NESTING_COW); - BUG_ON(ret); + if (ret) { + btrfs_tree_unlock(eb); + free_extent_buffer(eb); + return ret; + } } if (next_key) { @@ -1291,7 +1295,11 @@ again: 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); -- 2.49.0