On Sun, Oct 24, 2021 at 09:17:02AM +0800, Wang Yugui wrote: > Hi, > > Yes. It is a known problem of btrfs and others. Hmmm, I haven't noticed a problem running generic/647 on ext4, xfs, f2fs, reiserfs, overlayfs, and vfat. I do see the proposed iomap changes referenced in [1] which is a prereqsuite for [2]. but it appears that most other file systems (both thoes that do and don't use iomap) are able to pass generic/647 even without the iomap changes proposed in [1]. [1] https://lore.kernel.org/all/20210827164926.1726765-1-agruenba@xxxxxxxxxx/ [2] https://lore.kernel.org/linux-btrfs/20211023115852.2517.409509F4@xxxxxxxxxxxx/T/ - Ted
