From: Kent Overstreet <kmo@daterainc.com>
To: Mike Snitzer <snitzer@redhat.com>
Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org,
linux-raid@vger.kernel.org, dm-devel@redhat.com,
linux-fsdevel@vger.kernel.org, Alasdair Kergon <agk@redhat.com>
Subject: Re: [PATCH 16/22] dm: Refactor for new bio cloning/splitting
Date: Thu, 10 Oct 2013 21:13:14 -0700 [thread overview]
Message-ID: <20131011041314.GB28572@kmo> (raw)
In-Reply-To: <20131007001410.GA14264@redhat.com>
On Sun, Oct 06, 2013 at 08:14:10PM -0400, Mike Snitzer wrote:
> On Fri, Oct 04 2013 at 1:07pm -0400,
> Mike Snitzer <snitzer@redhat.com> wrote:
>
> > With your latest fix I was able to create a thin device and format with
> > XFS. Unfortunately, when I tried to run the thinp-test-suite the very
> > first BasicTests test (test_dd_benchmark) fails -- need to look closer
> > but it would seem to me the thinp saved bio_endio path isn't happy. We
> > likely need an appropriately placed atomic_inc(&bio->bi_remaining); like
> > you did in dm-cache-target.c
> >
> > ------------[ cut here ]------------
> > kernel BUG at fs/bio.c:1722!
> ...
> > Call Trace:
> > [<ffffffffa05f2ef9>] process_prepared_mapping+0x79/0x150 [dm_thin_pool]
> > [<ffffffffa05f2ba7>] process_prepared+0x87/0xa0 [dm_thin_pool]
> > [<ffffffffa05f58f3>] do_worker+0x33/0x60 [dm_thin_pool]
> > [<ffffffff81067862>] process_one_work+0x182/0x3b0
> > [<ffffffff81068c80>] worker_thread+0x120/0x3a0
> > [<ffffffff81068b60>] ? manage_workers+0x160/0x160
> > [<ffffffff8106eace>] kthread+0xce/0xe0
> > [<ffffffff8106ea00>] ? kthread_freezable_should_stop+0x70/0x70
> > [<ffffffff8152b1ac>] ret_from_fork+0x7c/0xb0
> > [<ffffffff8106ea00>] ? kthread_freezable_should_stop+0x70/0x70
> > Code: 1f 84 00 00 00 00 00 48 8b 57 10 83 e2 01 0f 44 f1 eb cd 0f 1f 40 00 48 8b 7f 50 48 85 ff 74 dd 8b 57 44 48 8d 47 44 85 d2 7f ac <0f> 0b eb fe 0f 1f 84 00 00 00 00 00 55 48 89 e5 66 66 66 66 90
> > RIP [<ffffffff811b1464>] bio_endio+0x74/0x80
> > RSP <ffff88032c5e7d48>
> > ---[ end trace acb5a7d638591b7b ]---
>
> Please fold this fix into your for-jens branch, thanks. (Could be that
> by the time Jens takes your immutable biovec changes we'll need to
> rebase but at least it won't slip through the cracks).
Thanks! I knew that bio chaining patch was going to cause a few issues
like this, but it seems to useful to pass up. Anything else come up/any
comments?
next prev parent reply other threads:[~2013-10-11 4:13 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 21:54 [PATCH 0/22] Immutable biovecs, block layer changes Kent Overstreet
2013-08-07 21:54 ` [PATCH 01/22] block: Use rw_copy_check_uvector() Kent Overstreet
2013-08-07 21:54 ` [PATCH 02/22] block: Consolidate duplicated bio_trim() implementations Kent Overstreet
2013-08-07 21:54 ` [PATCH 03/22] bcache: Kill unaligned bvec hack Kent Overstreet
2013-08-07 21:54 ` [PATCH 04/22] block: Abstract out bvec iterator Kent Overstreet
2013-08-07 22:24 ` Geoff Levand
2013-08-08 2:04 ` Ed Cashin
2013-08-09 0:09 ` Kent Overstreet
2013-08-09 0:59 ` Ed Cashin
2013-08-09 1:05 ` Kent Overstreet
2013-08-09 20:16 ` Ed Cashin
2013-08-13 14:03 ` Ed Cashin
2013-08-13 18:51 ` Kent Overstreet
2013-08-13 19:18 ` Ed L Cashin
2013-08-07 21:54 ` [PATCH 05/22] dm: Use bvec_iter for dm_bio_record() Kent Overstreet
2013-08-07 21:54 ` [PATCH 06/22] block: Convert bio_iovec() to bvec_iter Kent Overstreet
2013-08-07 21:54 ` [PATCH 07/22] block: Convert bio_for_each_segment() " Kent Overstreet
[not found] ` <1375912471-5106-1-git-send-email-kmo-PEzghdH756F8UrSeD/g0lQ@public.gmane.org>
2013-08-07 21:54 ` [PATCH 08/22] block: Immutable bio vecs Kent Overstreet
2013-08-07 21:54 ` [PATCH 09/22] block: Convert bio_copy_data() to bvec_iter Kent Overstreet
2013-08-07 21:54 ` [PATCH 10/22] bio-integrity: Convert " Kent Overstreet
2013-08-07 21:54 ` [PATCH 11/22] block: Kill bio_segments()/bi_vcnt usage Kent Overstreet
2013-08-07 21:54 ` [PATCH 12/22] block: Convert drivers to immutable biovecs Kent Overstreet
2013-08-07 21:54 ` [PATCH 13/22] ceph: Convert " Kent Overstreet
2013-08-07 21:54 ` [PATCH 14/22] block: Kill bio_iovec_idx(), __bio_iovec() Kent Overstreet
2013-08-07 21:54 ` [PATCH 15/22] rbd: Refactor bio cloning, don't clone biovecs Kent Overstreet
2013-08-07 21:54 ` [PATCH 16/22] dm: Refactor for new bio cloning/splitting Kent Overstreet
2013-09-28 4:59 ` Mike Snitzer
2013-10-03 3:17 ` Kent Overstreet
2013-10-03 3:23 ` Mike Snitzer
2013-10-03 21:45 ` Kent Overstreet
2013-10-03 22:50 ` Mike Snitzer
2013-10-04 17:07 ` Mike Snitzer
2013-10-07 0:14 ` Mike Snitzer
2013-10-11 4:13 ` Kent Overstreet [this message]
2013-10-11 21:16 ` Mike Snitzer
2013-10-11 22:11 ` Kent Overstreet
2013-08-07 21:54 ` [PATCH 17/22] block: Remove bi_idx hacks Kent Overstreet
2013-08-07 21:54 ` [PATCH 18/22] block: Generic bio chaining Kent Overstreet
2013-08-10 7:38 ` Kent Overstreet
2013-08-07 21:54 ` [PATCH 19/22] block: Rename bio_split() -> bio_pair_split() Kent Overstreet
2013-08-07 21:54 ` [PATCH 20/22] block: Introduce new bio_split() Kent Overstreet
2013-08-07 21:54 ` [PATCH 21/22] block: Kill bio_pair_split() Kent Overstreet
2013-08-07 21:54 ` [PATCH 22/22] block: Don't save/copy bvec array anymore, share when cloning Kent Overstreet
2013-08-08 15:09 ` [PATCH 0/22] Immutable biovecs, block layer changes Christoph Hellwig
2013-08-08 21:15 ` Kent Overstreet
2013-09-24 11:00 ` Christoph Hellwig
2013-09-24 13:20 ` Mike Snitzer
2013-09-24 14:29 ` Christoph Hellwig
2013-09-24 19:19 ` Kent Overstreet
2013-09-27 18:38 ` Mike Snitzer
2013-09-24 19:16 ` Kent Overstreet
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