From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: Cyrill Gorcunov <gorcunov@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>
Cc: linux-mm@kvack.org, Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: [PATCH] hanging swapoff with HAVE_ARCH_SOFT_DIRTY=y
Date: Mon, 14 Sep 2015 11:24:46 +0200 [thread overview]
Message-ID: <1442222687-9758-1-git-send-email-schwidefsky@de.ibm.com> (raw)
Greetings,
while implementing software dirty bits for s390 we noticed that the swapoff
command at shutdown caused the system to hang. After some debugging I found
the maybe_same_pte() function to be the cause of this.
The bug shows up for any configuration with CONFIG_HAVE_ARCH_SOFT_DIRTY=y
and CONFIG_MEM_SOFT_DIRTY=n. Currently this affects x86_64 only.
Martin Schwidefsky (1):
mm/swapfile: fix swapoff with software dirty bits enabled
mm/swapfile.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--
1.9.1
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next reply other threads:[~2015-12-05 19:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-14 9:24 Martin Schwidefsky [this message]
2015-09-14 9:24 ` [PATCH] mm/swapfile: mm/swapfile: fix swapoff vs. software dirty bits Martin Schwidefsky
2015-12-17 16:08 ` Cyrill Gorcunov
2015-12-18 7:41 ` Martin Schwidefsky
2015-09-17 8:58 [PATCH] hanging swapoff with HAVE_ARCH_SOFT_DIRTY=y Martin Schwidefsky
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