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Re: [dm-devel] [PATCH 10/14] dm_thin: add support for REQ_DISCARD
- From: Alasdair G Kergon <agk redhat com>
- To: device-mapper development <dm-devel redhat com>
- Cc: Joe Thornber <ejt redhat com>, Mike Snitzer <snitzer redhat com>
- Subject: Re: [dm-devel] [PATCH 10/14] dm_thin: add support for REQ_DISCARD
- Date: Fri, 23 Mar 2012 12:45:21 +0000
On Fri, Mar 16, 2012 at 03:22:33PM +0000, Joe Thornber wrote:
> + default:
> + DMERR("discard: find block unexpectedly returned %d\n", r);
What can trigger that?
- Is it really BUG() or /* NOTREACHED */ perhaps?
Similar question applies to (existing) process_bio().
Alasdair
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