linux-kernel - Re: [PATCH] blk: don't account discard request size

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Date:	Wed, 13 May 2015 11:00:49 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Jens Axboe <axboe@...com>
Cc:	Shaohua Li <shli@...com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] blk: don't account discard request size

Jens Axboe <axboe@...com> writes:

> That would be better. But I'm still not sure we want to turn off
> accounting for discards. For the mixed write/discard cases it's
> definitely confusing. The better option would be to account it as a
> discard and not a write. Preferably in a way that would not break
> existing tools, but so that they could get updated to support it.

Are you suggesting adding a few fields to the end of diskstats or adding
a new proc file altogether?  (or something else?)

Cheers,
Jeff
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