On Thu, Mar 25, 2021 at 12:47:26AM +0900, Johannes Thumshirn wrote: > Christoph reported that we'll likely trigger the WARN_ON_ONCE() checking > that we're not submitting a bvec with REQ_OP_ZONE_APPEND in > bio_iov_iter_get_pages() some time ago using zoned btrfs, but I couldn't > reproduce it back then. > > Now Naohiro was able to trigger the bug as well with xfstests generic/095 > on a zoned btrfs. > > There is nothing that prevents bvec submissions via REQ_OP_ZONE_APPEND if > the hardware's zone append limit is met. > > Reported-by: Naohiro Aota <naohiro.aota@xxxxxxx> > Reported-by: Christoph Hellwig <hch@xxxxxx> > Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>
