From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: kosaki.motohiro@jp.fujitsu.com,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>,
linux-mm@kvack.org
Subject: Re: [patch 5/5] vmscan: remove may_swap scan control
Date: Thu, 13 May 2010 12:36:12 +0900 (JST) [thread overview]
Message-ID: <20100513122935.2161.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <20100430224316.198324471@cmpxchg.org>
> The may_swap scan control flag can be naturally merged into the
> swappiness parameter: swap only if swappiness is non-zero.
Sorry, NAK.
AFAIK, swappiness==0 is very widely used in MySQL users community.
They expect this parameter mean "very prefer to discard file cache
rather than swap, but not completely disable swap".
We shouldn't ignore the real world use case. even if it is a bit strange.
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next prev parent reply other threads:[~2010-05-13 3:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-30 23:05 [patch 0/5] vmscan: cut down on struct scan_control Johannes Weiner
2010-04-30 23:05 ` [patch 1/5] vmscan: fix unmapping behaviour for RECLAIM_SWAP Johannes Weiner
2010-05-13 3:02 ` KOSAKI Motohiro
2010-05-19 21:32 ` Johannes Weiner
2010-04-30 23:05 ` [patch 2/5] vmscan: remove may_unmap scan control Johannes Weiner
2010-04-30 23:05 ` [patch 3/5] vmscan: remove all_unreclaimable " Johannes Weiner
2010-05-13 3:25 ` KOSAKI Motohiro
2010-05-19 21:34 ` Johannes Weiner
2010-05-31 18:32 ` Greg Thelen
2010-06-01 3:29 ` [PATCH] vmscan: Fix do_try_to_free_pages() return value when priority==0 reclaim failure KOSAKI Motohiro
2010-06-01 6:48 ` KAMEZAWA Hiroyuki
2010-06-01 8:10 ` Balbir Singh
2010-06-02 0:33 ` KAMEZAWA Hiroyuki
2010-06-01 14:50 ` Greg Thelen
2010-06-04 14:32 ` Johannes Weiner
2010-04-30 23:05 ` [patch 4/5] vmscan: remove isolate_pages callback scan control Johannes Weiner
2010-05-13 3:29 ` KOSAKI Motohiro
2010-05-19 21:42 ` Johannes Weiner
2010-05-20 23:23 ` KOSAKI Motohiro
2010-04-30 23:05 ` [patch 5/5] vmscan: remove may_swap " Johannes Weiner
2010-05-13 3:36 ` KOSAKI Motohiro [this message]
2010-05-19 21:44 ` Johannes Weiner
2010-05-21 0:15 ` KOSAKI Motohiro
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