linux-kernel - Re: khugepaged doesn't want to freeze

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Message-Id: <1320766151-2619-1-git-send-email-aarcange@redhat.com>
Date:	Tue,  8 Nov 2011 16:29:10 +0100
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	"Rafael J. Wysocki" <rjw@...e.com>
Cc:	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: khugepaged doesn't want to freeze

[PATCH] thp: reduce khugepaged freezing latency

Beware patch untested but I suspect the problem was the lack of
wakeup during long schedule_timeout. And a missing try_to_freeze in
case alloc_hugepage repeatedly fails in the CONFIG_NUMA=n case.
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