Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by... | linux-bcache

[PATCH v7 0/9] Block cleanups, deadlock fix · Kent Overstreet <hidden> · 2012-08-28
[PATCH v7 2/9] dm: Use bioset's front_pad for dm_rq_clone_bio_info · Kent Overstreet <hidden> · 2012-08-28
[PATCH v7 4/9] pktcdvd: Switch to bio_kmalloc() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 4/9] pktcdvd: Switch to bio_kmalloc() · Tejun Heo <tj@kernel.org> · 2012-08-28
Re: [PATCH v7 4/9] pktcdvd: Switch to bio_kmalloc() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 4/9] pktcdvd: Switch to bio_kmalloc() · Jiri Kosina <hidden> · 2012-09-04
Re: [PATCH v7 4/9] pktcdvd: Switch to bio_kmalloc() · Kent Overstreet <hidden> · 2012-09-05
[PATCH v7 7/9] block: Add bio_clone_bioset(), bio_clone_kmalloc() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 7/9] block: Add bio_clone_bioset(), bio_clone_kmalloc() · Tejun Heo <tj@kernel.org> · 2012-08-28
Re: [PATCH v7 7/9] block: Add bio_clone_bioset(), bio_clone_kmalloc() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 7/9] block: Add bio_clone_bioset(), bio_clone_kmalloc() · Tejun Heo <tj@kernel.org> · 2012-09-01
[PATCH v7 8/9] block: Reorder struct bio_set · Kent Overstreet <hidden> · 2012-08-28
[PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-08-28
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Alasdair G Kergon <agk@redhat.com> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · John Stoffel <hidden> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-08-28
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Mikulas Patocka <mpatocka@redhat.com> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Alasdair G Kergon <agk@redhat.com> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Alasdair G Kergon <agk@redhat.com> · 2012-08-29
Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-29
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-08-30
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-31
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-08-31
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-08-31
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-09-03
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Mikulas Patocka <mpatocka@redhat.com> · 2012-09-03
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Mikulas Patocka <mpatocka@redhat.com> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-09-04
[PATCH] dm: Use bioset's front_pad for dm_target_io · Kent Overstreet <hidden> · 2012-09-04
Re: [PATCH] dm: Use bioset's front_pad for dm_target_io · Tejun Heo <tj@kernel.org> · 2012-09-04
[PATCH 2] dm: Use bioset's front_pad for dm_target_io · Mikulas Patocka <mpatocka@redhat.com> · 2012-09-11
Re: [PATCH 2] dm: Use bioset's front_pad for dm_target_io · Kent Overstreet <hidden> · 2012-09-11
Re: [PATCH 2] dm: Use bioset's front_pad for dm_target_io · Mikulas Patocka <mpatocka@redhat.com> · 2012-09-12
Re: [dm-devel] [PATCH 2] dm: Use bioset's front_pad for dm_target_io · Alasdair G Kergon <agk@redhat.com> · 2012-09-14
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-09-01
[PATCH v2] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-09-03
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Dave Chinner <david@fromorbit.com> · 2012-09-03
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Kent Overstreet <hidden> · 2012-09-03
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Vivek Goyal <vgoyal@redhat.com> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-09-04
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Dave Chinner <david@fromorbit.com> · 2012-09-05
Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers · Tejun Heo <tj@kernel.org> · 2012-09-05
[PATCH v7 6/9] block: Consolidate bio_alloc_bioset(), bio_kmalloc() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 6/9] block: Consolidate bio_alloc_bioset(), bio_kmalloc() · Tejun Heo <tj@kernel.org> · 2012-08-28
Re: [PATCH v7 6/9] block: Consolidate bio_alloc_bioset(), bio_kmalloc() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 6/9] block: Consolidate bio_alloc_bioset(), bio_kmalloc() · Tejun Heo <tj@kernel.org> · 2012-09-01
[PATCH v7 5/9] block: Kill bi_destructor · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 5/9] block: Kill bi_destructor · Tejun Heo <tj@kernel.org> · 2012-08-28
Re: [PATCH v7 5/9] block: Kill bi_destructor · Kent Overstreet <hidden> · 2012-08-28
[PATCH v7 3/9] block: Add bio_reset() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 3/9] block: Add bio_reset() · Tejun Heo <tj@kernel.org> · 2012-08-28
Re: [PATCH v7 3/9] block: Add bio_reset() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 3/9] block: Add bio_reset() · Kent Overstreet <hidden> · 2012-08-28
Re: [PATCH v7 3/9] block: Add bio_reset() · Tejun Heo <tj@kernel.org> · 2012-09-01
Re: [PATCH v7 3/9] block: Add bio_reset() · Kent Overstreet <hidden> · 2012-09-05
[PATCH v7 1/9] block: Generalized bio pool freeing · Kent Overstreet <hidden> · 2012-08-28

Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers

From: Alasdair G Kergon <hidden>
Date: 2012-08-29 16:58:13
Also in: dm-devel, lkml

On Wed, Aug 29, 2012 at 09:50:06AM -0700, Kent Overstreet wrote:

The other thing we could do is make the rescuer thread per block device
(which arguably makes more sense than per bio_set anyways), then
associate bio_sets with specific block devices/rescuers.

 
For dm, it's equivalent - already one bioset required per live device:
dm_alloc_md_mempools().

Alasdair

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