On Wed, Feb 16, 2022 at 03:09:08PM +0800, Qu Wenruo wrote:
> No upstream commit.
> Since the bug only exists between v5.11 and v5.15. In v5.16 btrfs
> reworked defrag and no longer has this bug.
I'm not sure this will work as a stable patch. A backport of an existing
upstream patch that is only adapted to older stable code base is fine
but what is the counterpart of this patch?
>
> [BUG]
> Since commit 7f458a3873ae ("btrfs: fix race when defragmenting leads to
> unnecessary IO") autodefrag no longer works with the following script:
The bug does no seem to be significant, autodefrag is basically a
heuristic so if it does not work perfectly in all cases it's still OK.
