On Thu, Apr 06, 2023 at 01:00:34PM +0800, Qu Wenruo wrote: > Since the introduction of scrub interface, the only flag that we support > is BTRFS_SCRUB_READONLY. > > Thus there is no sanity checks, if there are some undefined flags passed > in, we just ignore them. > > This is problematic if we want to introduce new scrub flags, as we have > no way to determine if such flags are supported. > > Thus this patch would address the problem by introducing a check for the > flags, and if unsupported flags are set, return -EOPNOTSUPP to inform > the user space. > > This check should be backported for all supported kernels before any new > scrub flags are introduced. > > CC: stable@xxxxxxxxxxxxxxx > Signed-off-by: Qu Wenruo <wqu@xxxxxxxx> Added to misc-next, thanks.
