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From: Rik van Riel <riel@redhat.com>
To: Ying Han <yinghan@google.com>
Cc: Minchan Kim <minchan@kernel.org>,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	Michal Hocko <mhocko@suse.cz>,
	Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mel@csn.ul.ie>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Minchan Kim <minchan.kim@gmail.com>,
	Hugh Dickins <hughd@google.com>, Nick Piggin <npiggin@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org
Subject: Re: [RFC PATCH] do_try_to_free_pages() might enter infinite loop
Date: Tue, 24 Apr 2012 12:38:06 -0400	[thread overview]
Message-ID: <4F96D6EE.6000809@redhat.com> (raw)
In-Reply-To: <CALWz4izoOYtNfRN3VBLSF7pyYyvjBPyiy865Xf+wvsCFwM6A7A@mail.gmail.com>

On 04/24/2012 12:36 PM, Ying Han wrote:

> However, what if B frees a pages everytime before pages_scanned
> reaches the point, then we won't set zone->all_unreclaimable at all.
> If so, we reaches a livelock here...

If B keeps freeing pages, surely A will get a successful
allocation and there will not be a livelock?

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  reply	other threads:[~2012-04-24 16:38 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-23 20:56 [RFC PATCH] do_try_to_free_pages() might enter infinite loop Ying Han
2012-04-23 22:20 ` KOSAKI Motohiro
2012-04-23 23:18   ` Ying Han
2012-04-23 23:19     ` Ying Han
2012-04-24  1:31     ` Minchan Kim
2012-04-24  2:06       ` Ying Han
2012-04-24 16:36       ` Ying Han
2012-04-24 16:38         ` Rik van Riel [this message]
2012-04-24 16:45           ` KOSAKI Motohiro
2012-04-24 17:22             ` Ying Han
2012-04-24 17:17           ` Ying Han
2012-04-24  5:36 ` Nick Piggin
2012-04-24 18:37   ` Ying Han
2012-05-01  3:34     ` Nick Piggin
2012-05-01 16:18       ` Ying Han
2012-05-01 16:20         ` Ying Han
2012-05-01 17:06         ` Rik van Riel
2012-05-02  3:25           ` Nick Piggin
2012-06-11 23:33 ` KOSAKI Motohiro
2012-06-11 23:37   ` KOSAKI Motohiro
2012-06-14  5:25     ` Ying Han
2012-06-12  0:53   ` Rik van Riel

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