[Date Prev][Date Next] [Thread Prev][Thread Next] [Thread Index] [Date Index] [Author Index]

Re: [dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor

From: Alasdair G Kergon <agk redhat com>
To: Tejun Heo <tj kernel org>
Cc: axboe kernel dk, koverstreet google com, dm-devel redhat com, linux-kernel vger kernel org, Junichi Nomura <j-nomura ce jp nec com>, linux-bcache vger kernel org, Mikulas Patocka <mpatocka redhat com>, linux-fsdevel vger kernel org, agk redhat com
Subject: Re: [dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor
Date: Fri, 18 May 2012 17:43:19 +0100

On Fri, May 18, 2012 at 08:57:29AM -0700, Tejun Heo wrote:
> Please explain why this is done and how it's safe.  Alasdair / dm
> folks, can you please ack this?

I think it's relying on there being never more than one reference on those 
bios so that that endio fn, called exactly once, always frees it and there
are no dm_puts elsewhere.

Alasdair

Follow-Ups:
- Re: [dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor
  - From: Kent Overstreet

References:
- [dm-devel] [PATCH 00/13] Block cleanups (for bcache)
  - From: koverstreet
- [dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor
  - From: koverstreet
- Re: [dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor
  - From: Tejun Heo

[Date Prev][Date Next] [Thread Prev][Thread Next] [Thread Index] [Date Index] [Author Index]