Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752226AbbHENCX (ORCPT ); Wed, 5 Aug 2015 09:02:23 -0400 Received: from mx2.suse.de ([195.135.220.15]:54951 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751703AbbHENCU (ORCPT ); Wed, 5 Aug 2015 09:02:20 -0400 From: Vlastimil Babka To: Andrew Morton , Jerome Marchand Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vlastimil Babka , Hugh Dickins , 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 , Minchan Kim Subject: [PATCH v3 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations Date: Wed, 5 Aug 2015 15:01:22 +0200 Message-Id: <1438779685-5227-2-git-send-email-vbabka@suse.cz> X-Mailer: git-send-email 2.4.6 In-Reply-To: <1438779685-5227-1-git-send-email-vbabka@suse.cz> References: <1438779685-5227-1-git-send-email-vbabka@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1369 Lines: 30 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 --- Documentation/filesystems/proc.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index d411ca6..29f4011 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -237,6 +237,8 @@ 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) Threads number of threads SigQ number of signals queued/max. number for queue SigPnd bitmap of pending signals for the thread -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/