linux-kernel - Re: [PATCH 1/3] fs/superblock: Unregister sb shrinker before ->kill

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Message-ID: <537E1D4E.4040407@redhat.com>
Date:	Thu, 22 May 2014 11:52:46 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Dave Chinner <david@...morbit.com>,
	Yuanhan Liu <yuanhan.liu@...ux.intel.com>,
	Bob Liu <bob.liu@...cle.com>, Jan Kara <jack@...e.cz>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>,
	Linux-FSDevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 1/3] fs/superblock: Unregister sb shrinker before ->kill_sb()

On 05/22/2014 05:09 AM, Mel Gorman wrote:
> From: Dave Chinner <david@...morbit.com>
> 
> We will like to unregister the sb shrinker before ->kill_sb().
> This will allow cached objects to be counted without call to
> grab_super_passive() to update ref count on sb. We want
> to avoid locking during memory reclamation especially when
> we are skipping the memory reclaim when we are out of
> cached objects.

> Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
> Signed-off-by: Mel Gorman <mgorman@...e.de>

Acked-by: Rik van Riel <riel@...hat.com>

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