From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753752AbbJBNgR (ORCPT ); Fri, 2 Oct 2015 09:36:17 -0400 Received: from mx2.suse.de ([195.135.220.15]:40605 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752794AbbJBNgG (ORCPT ); Fri, 2 Oct 2015 09:36:06 -0400 From: Vlastimil Babka To: linux-mm@kvack.org, Jerome Marchand , Andrew Morton , Hugh Dickins Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Michal Hocko , "Kirill A. Shutemov" , Cyrill Gorcunov , Randy Dunlap , linux-s390@vger.kernel.org, Martin Schwidefsky , Heiko Carstens , Peter Zijlstra , Paul Mackerras , Arnaldo Carvalho de Melo , Oleg Nesterov , Linux API , Konstantin Khlebnikov , Vlastimil Babka Subject: [PATCH v4 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations Date: Fri, 2 Oct 2015 15:35:48 +0200 Message-Id: <1443792951-13944-2-git-send-email-vbabka@suse.cz> X-Mailer: git-send-email 2.5.2 In-Reply-To: <1443792951-13944-1-git-send-email-vbabka@suse.cz> References: <1443792951-13944-1-git-send-email-vbabka@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The documentation for /proc/pid/status does not mention that the value of VmSwap counts only swapped out anonymous private pages and not shmem. This is not obvious, so document this limitation. Signed-off-by: Vlastimil Babka Acked-by: Konstantin Khlebnikov Acked-by: Michal Hocko --- Documentation/filesystems/proc.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index a99b208..7ef50cb 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -239,6 +239,8 @@ Table 1-2: Contents of the status files (as of 4.1) VmPTE size of page table entries VmPMD size of second level page tables VmSwap size of swap usage (the number of referred swapents) + by anonymous private data (shmem swap usage is not + included) HugetlbPages size of hugetlb memory portions Threads number of threads SigQ number of signals queued/max. number for queue -- 2.5.2