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...phys_segments gets sometimes bigger than queue_max_sectors() after blk_recount_segments(). That happens no matter whether segments are recalculated or not. I'm not completely sure about what to do, but how about the attached patch? It seems to work, according to several xfstests runs. Cheers, Dongsu ---- >From 1db98323931eb9ab430116c4d909d22222c16e22 Mon Sep 17 00:00:00 2001 From: Dongsu Park <dongsu.park at profitbricks.com> Date: Tue, 11 Nov 2014 13:10:59 +0100 Subject: [RFC PATCH] blk-merge: make bi_phys_segments consider also queue_max_segments() When recounting the number of...

...phys_segments gets sometimes bigger than queue_max_sectors() after blk_recount_segments(). That happens no matter whether segments are recalculated or not. I'm not completely sure about what to do, but how about the attached patch? It seems to work, according to several xfstests runs. Cheers, Dongsu ---- >From 1db98323931eb9ab430116c4d909d22222c16e22 Mon Sep 17 00:00:00 2001 From: Dongsu Park <dongsu.park at profitbricks.com> Date: Tue, 11 Nov 2014 13:10:59 +0100 Subject: [RFC PATCH] blk-merge: make bi_phys_segments consider also queue_max_segments() When recounting the number of...

On Tue, Nov 11, 2014 at 11:42 PM, Dongsu Park <dongsu.park at profitbricks.com> wrote: > Hi Ming, > > On 11.11.2014 08:56, Ming Lei wrote: >> On Tue, Nov 11, 2014 at 7:31 AM, Jens Axboe <axboe at kernel.dk> wrote: >> > Known, I'm afraid, Ming is looking into it. > > Actually I had also tried t...

On 2014-11-10 02:59, Rusty Russell wrote: > Jeff Layton <jlayton at poochiereds.net> writes: > >> In the latest Fedora rawhide kernel in the repos, I'm seeing the >> following oops when mounting xfs. rc2-ish kernels seem to be fine: >> >> [ 64.669633] ------------[ cut here ]------------ >> [ 64.670008] kernel BUG at drivers/block/virtio_blk.c:172!

On 2014-11-10 02:59, Rusty Russell wrote: > Jeff Layton <jlayton at poochiereds.net> writes: > >> In the latest Fedora rawhide kernel in the repos, I'm seeing the >> following oops when mounting xfs. rc2-ish kernels seem to be fine: >> >> [ 64.669633] ------------[ cut here ]------------ >> [ 64.670008] kernel BUG at drivers/block/virtio_blk.c:172!

On 11/11/2014 09:42 AM, Ming Lei wrote: > The attached patch should fix the problem, and hope it is the last one, :-) Dongsu and Jeff, any of you test this variant? I think this is the last one, at least I hope so as well... -- Jens Axboe

On 11/11/2014 09:42 AM, Ming Lei wrote: > The attached patch should fix the problem, and hope it is the last one, :-) Dongsu and Jeff, any of you test this variant? I think this is the last one, at least I hope so as well... -- Jens Axboe