From: Andrew Morton <akpm@linux-foundation.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: linux-mm@kvack.org, Jerome Marchand <jmarchan@redhat.com>,
Hugh Dickins <hughd@google.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
Michal Hocko <mhocko@suse.cz>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Cyrill Gorcunov <gorcunov@openvz.org>,
Randy Dunlap <rdunlap@infradead.org>,
linux-s390@vger.kernel.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Oleg Nesterov <oleg@redhat.com>,
Linux API <linux-api@vger.kernel.org>,
Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Subject: Re: [PATCH v4 3/4] mm, shmem: Add shmem resident memory accounting
Date: Fri, 2 Oct 2015 15:37:16 -0700 [thread overview]
Message-ID: <20151002153716.8dfc261ed775c63caea92c69@linux-foundation.org> (raw)
In-Reply-To: <1443792951-13944-4-git-send-email-vbabka@suse.cz>
On Fri, 2 Oct 2015 15:35:50 +0200 Vlastimil Babka <vbabka@suse.cz> wrote:
> From: Jerome Marchand <jmarchan@redhat.com>
Changelog is a bit weird.
> Currently looking at /proc/<pid>/status or statm, there is no way to
> distinguish shmem pages from pages mapped to a regular file (shmem
> pages are mapped to /dev/zero), even though their implication in
> actual memory use is quite different.
OK, that's a bunch of stuff about the user interface.
> This patch adds MM_SHMEMPAGES counter to mm_rss_stat to account for
> shmem pages instead of MM_FILEPAGES.
And that has nothing to do with the user interface.
So now this little reader is all confused. The patch doesn't actually
address the described problem at all, does it? It's preparatory stuff
only? No changes to the kernel's user interface?
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next prev parent reply other threads:[~2015-10-02 22:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 13:35 [PATCH v4 0/4] enhance shmem process and swap accounting Vlastimil Babka
2015-10-02 13:35 ` [PATCH v4 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations Vlastimil Babka
2015-10-02 14:56 ` Jerome Marchand
2015-10-05 1:05 ` Hugh Dickins
2015-10-06 7:05 ` Vlastimil Babka
2015-10-02 13:35 ` [PATCH v4 2/4] mm, proc: account for shmem swap in /proc/pid/smaps Vlastimil Babka
2015-10-02 15:00 ` Jerome Marchand
2015-10-02 15:20 ` Michal Hocko
2015-10-02 22:37 ` Andrew Morton
2015-10-06 7:08 ` Vlastimil Babka
2015-10-05 3:01 ` Hugh Dickins
2015-10-21 14:39 ` Vlastimil Babka
2015-10-21 22:38 ` Hugh Dickins
2015-10-26 11:22 ` Jerome Marchand
2015-10-05 7:53 ` Peter Zijlstra
2015-10-02 13:35 ` [PATCH v4 3/4] mm, shmem: Add shmem resident memory accounting Vlastimil Babka
2015-10-02 22:37 ` Andrew Morton [this message]
2015-10-05 4:28 ` Hugh Dickins
2015-10-02 13:35 ` [PATCH v4 4/4] mm, procfs: Display VmAnon, VmFile and VmShm in /proc/pid/status Vlastimil Babka
2015-10-02 22:37 ` Andrew Morton
2015-10-05 4:55 ` Hugh Dickins
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