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Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers
- From: Alasdair G Kergon <agk redhat com>
- To: Kent Overstreet <koverstreet google com>
- Cc: Jens Axboe <axboe kernel dk>, linux-kernel vger kernel org, dm-devel redhat com, Mikulas Patocka <mpatocka redhat com>, bharrosh panasas com, tj kernel org, linux-bcache vger kernel org, vgoyal redhat com
- Subject: Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers
- Date: Wed, 29 Aug 2012 17:57:58 +0100
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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