On Thu, Feb 04, 2021 at 07:52:36PM -0800, Ira Weiny wrote: > On Thu, Feb 04, 2021 at 04:26:08PM +0100, David Sterba wrote: > > On Wed, Feb 03, 2021 at 04:56:48PM +0100, David Sterba wrote: > > > On Wed, Jan 27, 2021 at 10:15:03PM -0800, ira.weiny@xxxxxxxxx wrote: > > > > From: Ira Weiny <ira.weiny@xxxxxxxxx> > > > Changelog is good, thanks. I've added stable tags as the missing unmap > > > is a potential problem. > > > > There are lots of tests faling, stack traces like below. I haven't seen > > anything obvious in the patch so that needs a closer look and for the > > time being I can't add the patch to for-next. > > :-( > > I think I may have been off by 1 on the raid6 kmap... > > Something like this should fix it... > > diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c > index b8a39dad0f00..dbf52f1a379d 100644 > --- a/fs/btrfs/raid56.c > +++ b/fs/btrfs/raid56.c > @@ -2370,7 +2370,7 @@ static noinline void finish_parity_scrub(struct btrfs_raid_bio *rbio, > goto cleanup; > } > SetPageUptodate(q_page); > - pointers[rbio->real_stripes] = kmap(q_page); > + pointers[rbio->real_stripes - 1] = kmap(q_page); Oh right and tests agree it works. > } > > atomic_set(&rbio->error, 0); > > Let me roll a new version. No need to, I'll fold the fixup. Thanks.
