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From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>,
	Rik van Riel <riel@redhat.com>,
	Michel Lespinasse <walken@google.com>
Subject: Re: [PATCH 3/4] mm, rmap: minimize lock hold when unlink_anon_vmas
Date: Wed, 7 Aug 2013 16:18:32 +0900	[thread overview]
Message-ID: <20130807071832.GC32449@lge.com> (raw)
In-Reply-To: <20130807061138.GK1845@cmpxchg.org>

On Wed, Aug 07, 2013 at 02:11:38AM -0400, Johannes Weiner wrote:
> On Tue, Aug 06, 2013 at 05:43:39PM +0900, Joonsoo Kim wrote:
> > Currently, we free the avc objects with holding a lock. To minimize
> > lock hold time, we just move the avc objects to another list
> > with holding a lock. Then, iterate them and free objects without holding
> > a lock. This makes lock hold time minimized.
> > 
> > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
> 
> I expect kfree() to be fast enough that we don't think we need to
> bother batching this outside the lock.

Okay!

Thanks.

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WARNING: multiple messages have this Message-ID (diff)
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>,
	Rik van Riel <riel@redhat.com>,
	Michel Lespinasse <walken@google.com>
Subject: Re: [PATCH 3/4] mm, rmap: minimize lock hold when unlink_anon_vmas
Date: Wed, 7 Aug 2013 16:18:32 +0900	[thread overview]
Message-ID: <20130807071832.GC32449@lge.com> (raw)
In-Reply-To: <20130807061138.GK1845@cmpxchg.org>

On Wed, Aug 07, 2013 at 02:11:38AM -0400, Johannes Weiner wrote:
> On Tue, Aug 06, 2013 at 05:43:39PM +0900, Joonsoo Kim wrote:
> > Currently, we free the avc objects with holding a lock. To minimize
> > lock hold time, we just move the avc objects to another list
> > with holding a lock. Then, iterate them and free objects without holding
> > a lock. This makes lock hold time minimized.
> > 
> > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
> 
> I expect kfree() to be fast enough that we don't think we need to
> bother batching this outside the lock.

Okay!

Thanks.


  reply	other threads:[~2013-08-07  7:18 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-06  8:43 [PATCH 1/4] mm, rmap: do easy-job first in anon_vma_fork Joonsoo Kim
2013-08-06  8:43 ` Joonsoo Kim
2013-08-06  8:43 ` [PATCH 2/4] mm, rmap: allocate anon_vma_chain before starting to link anon_vma_chain Joonsoo Kim
2013-08-06  8:43   ` Joonsoo Kim
2013-08-07  6:08   ` Johannes Weiner
2013-08-07  6:08     ` Johannes Weiner
2013-08-07  7:17     ` Joonsoo Kim
2013-08-07  7:17       ` Joonsoo Kim
2013-08-06  8:43 ` [PATCH 3/4] mm, rmap: minimize lock hold when unlink_anon_vmas Joonsoo Kim
2013-08-06  8:43   ` Joonsoo Kim
2013-08-07  6:11   ` Johannes Weiner
2013-08-07  6:11     ` Johannes Weiner
2013-08-07  7:18     ` Joonsoo Kim [this message]
2013-08-07  7:18       ` Joonsoo Kim
2013-08-06  8:43 ` [PATCH 4/4] mm, page_alloc: optimize batch count in free_pcppages_bulk() Joonsoo Kim
2013-08-06  8:43   ` Joonsoo Kim
2013-08-06  8:48   ` Joonsoo Kim
2013-08-06  8:48     ` Joonsoo Kim
2013-08-06 12:58 ` [PATCH 1/4] mm, rmap: do easy-job first in anon_vma_fork Johannes Weiner
2013-08-06 12:58   ` Johannes Weiner
2013-08-07  7:16   ` Joonsoo Kim
2013-08-07  7:16     ` Joonsoo Kim

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