Re: [PATCH] RFC: dm: avoid the mutex lock in dm_bufio_shrink_count()

From	David Rientjes <rientjes@google.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] RFC: dm: avoid the mutex lock in dm_bufio_shrink_count()
Date	2016-11-29 02:00 +0100
Message-ID	<sIEW5-Wo-9@gated-at.bofh.it> (permalink)
References	<sECpP-67V-1@gated-at.bofh.it> <sEDlU-6OX-51@gated-at.bofh.it> <sGMEp-1gq-9@gated-at.bofh.it>
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On Wed, 23 Nov 2016, Mikulas Patocka wrote:

> From: Mikulas Patocka <mpatocka@redhat.com>
> 
> dm-bufio: don't take the lock in dm_bufio_shrink_count
> 
> dm_bufio_shrink_count is called from do_shrink_slab to find out how many
> freeable objects are there. The reported value doesn't have to be precise,
> so we don't need to take the dm-bufio lock.
> 
> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

Acked-by: David Rientjes <rientjes@google.com>

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Re: [PATCH] RFC: dm: avoid the mutex lock in  dm_bufio_shrink_count() David Rientjes <rientjes@google.com> - 2016-11-29 02:00 +0100

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