Add a comment explaining when ->inode could be null and why we always perform the ->async_delalloc_pages modification.
Signed-off-by: Nikolay Borisov <[email protected]> --- fs/btrfs/inode.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1a7f790b68e8..41ad0d06b3d4 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1165,6 +1165,12 @@ static noinline void async_cow_submit(struct btrfs_work *work) 5 * SZ_1M) cond_wake_up_nomb(&fs_info->async_submit_wait); + /* + * ->inode could be NULL if async_cow_start has failed to compress, + * in which case we don't have anything to submit, yet we need to + * adjust ->async_delalloc_pages always as its paired to the init + * happening in cow_file_range_async + */ if (async_cow->inode) submit_compressed_extents(async_cow); } -- 2.17.1
