Re: [dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor
From: Alasdair G Kergon <hidden>
Date: 2012-05-18 16:43:19
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dm-devel, linux-fsdevel, lkml
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