From: Andrew Morton <akpm@linux-foundation.org>
To: Minchan Kim <minchan@kernel.org>
Cc: linux-kernel@vger.kernel.org, Nitin Gupta <ngupta@vflare.org>,
Jerome Marchand <jmarchan@redhat.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: Re: [PATCH 4/7] zram: use atomic operation for stat
Date: Mon, 13 Jan 2014 15:58:14 -0800 [thread overview]
Message-ID: <20140113155814.07ab74c8f77179fc770a8e5f@linux-foundation.org> (raw)
In-Reply-To: <1389611942-15544-5-git-send-email-minchan@kernel.org>
On Mon, 13 Jan 2014 20:18:59 +0900 Minchan Kim <minchan@kernel.org> wrote:
> Some of fields in zram->stats are protected by zram->lock which
> is rather coarse-grained so let's use atomic operation without
> explict locking.
Confused. The patch didn't remove any locking, so it made the code
slower.
next prev parent reply other threads:[~2014-01-13 23:58 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-13 11:18 [PATCH 0/7] zram bug fix and lock redesign Minchan Kim
2014-01-13 11:18 ` [PATCH 1/7] zram: fix race between reset and flushing pending work Minchan Kim
2014-01-13 23:55 ` Andrew Morton
2014-01-14 0:15 ` Minchan Kim
2014-01-14 7:14 ` Sergey Senozhatsky
2014-01-13 11:18 ` [PATCH 2/7] zram: delay pending free request in read path Minchan Kim
2014-01-13 11:18 ` [PATCH 3/7] zram: remove unnecessary free Minchan Kim
2014-01-13 11:18 ` [PATCH 4/7] zram: use atomic operation for stat Minchan Kim
2014-01-13 23:58 ` Andrew Morton [this message]
2014-01-14 0:19 ` Minchan Kim
2014-01-14 0:23 ` Andrew Morton
2014-01-14 0:38 ` Minchan Kim
2014-01-13 11:19 ` [PATCH 5/7] zram: introduce zram->tb_lock Minchan Kim
2014-01-13 11:19 ` [PATCH 6/7] zram: remove workqueue for freeing removed pending slot Minchan Kim
2014-01-13 19:42 ` Sergey Senozhatsky
2014-01-13 23:38 ` Minchan Kim
2014-01-14 7:09 ` Sergey Senozhatsky
2014-01-13 11:19 ` [PATCH 7/7] zram: remove unnecessary lock Minchan Kim
2014-01-14 9:29 ` Jerome Marchand
2014-01-15 1:34 ` Minchan Kim
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