From: Gerald Schaefer <gerald.schaefer-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
To: Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
Michael Kerrisk
<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Linux API <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Hugh Dickins <hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Rik van Riel <riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
KOSAKI Motohiro
<kosaki.motohiro-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
Mel Gorman <mgorman-l3A5Bk7waGM@public.gmane.org>,
Jason Evans <je-b10kYP2dOMg@public.gmane.org>,
Zhang Yanfei
<zhangyanfei-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>,
"Kirill A. Shutemov"
<kirill-oKw7cIdHH8eLwutG50LtGA@public.gmane.org>,
Martin Schwidefsky
<schwidefsky-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
Heiko Carstens
<heiko.carstens-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
Dominik Dingel
<dingel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Christian Borntraeger
<borntraeger-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
linux-s390-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v10 5/7] s390: add pmd_[dirty|mkclean] for THP
Date: Mon, 7 Jul 2014 17:31:43 +0200 [thread overview]
Message-ID: <20140707173143.271bbd52@thinkpad> (raw)
In-Reply-To: <1404694438-10272-6-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
On Mon, 7 Jul 2014 09:53:56 +0900
Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent
> overwrite of the contents since MADV_FREE syscall is called for
> THP page but for s390 pmds only referenced bit is available
> because there is no free bit left in the pmd entry for the
> software dirty bit so this patch adds dumb pmd_dirty which
> returns always true by suggesting by Martin.
>
> They finally find a solution in future.
> http://marc.info/?l=linux-api&m=140440328820808&w=2
>
> Cc: Martin Schwidefsky <schwidefsky-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: Heiko Carstens <heiko.carstens-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: Gerald Schaefer <gerald.schaefer-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: Dominik Dingel <dingel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> Cc: Christian Borntraeger <borntraeger-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: linux-s390-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Signed-off-by: Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> ---
> arch/s390/include/asm/pgtable.h | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
Acked-by: Gerald Schaefer <gerald.schaefer-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
next prev parent reply other threads:[~2014-07-07 15:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-07 0:53 [PATCH v10 0/7] MADV_FREE support Minchan Kim
2014-07-07 0:53 ` [PATCH v10 1/7] mm: support madvise(MADV_FREE) Minchan Kim
2014-07-07 10:41 ` Kirill A. Shutemov
2014-07-08 0:36 ` Minchan Kim
[not found] ` <1404694438-10272-2-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-07-08 3:54 ` Zhang Yanfei
[not found] ` <53BB6B64.1080807-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2014-07-08 4:45 ` Minchan Kim
2014-07-07 0:53 ` [PATCH v10 2/7] x86: add pmd_[dirty|mkclean] for THP Minchan Kim
2014-07-07 10:44 ` Kirill A. Shutemov
2014-07-07 0:53 ` [PATCH v10 3/7] sparc: " Minchan Kim
2014-07-07 0:53 ` [PATCH v10 4/7] powerpc: " Minchan Kim
2014-07-07 0:53 ` [PATCH v10 5/7] s390: " Minchan Kim
[not found] ` <1404694438-10272-6-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-07-07 15:31 ` Gerald Schaefer [this message]
2014-07-07 0:53 ` [PATCH v10 6/7] ARM: " Minchan Kim
[not found] ` <1404694438-10272-7-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-07-07 9:12 ` Will Deacon
2014-07-07 9:22 ` Steve Capper
2014-07-08 1:09 ` Minchan Kim
2014-07-07 0:53 ` [PATCH v10 7/7] mm: Don't split THP page when syscall is called Minchan Kim
2014-07-07 11:13 ` Kirill A. Shutemov
[not found] ` <20140707111303.GC23150-nhfs4B5ZimeFUdmeq17FyvUpdFzICT1y@public.gmane.org>
2014-07-08 1:30 ` Minchan Kim
2014-07-08 6:10 ` Minchan Kim
2014-07-08 9:48 ` Kirill A. Shutemov
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