Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932593AbbBZNvi (ORCPT ); Thu, 26 Feb 2015 08:51:38 -0500 Received: from cantor2.suse.de ([195.135.220.15]:43436 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932507AbbBZNv2 (ORCPT ); Thu, 26 Feb 2015 08:51:28 -0500 From: Vlastimil Babka To: linux-mm@kvack.org, Jerome Marchand Cc: linux-kernel@vger.kernel.org, Andrew Morton , linux-doc@vger.kernel.org, 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 , Vlastimil Babka Subject: [PATCH 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations Date: Thu, 26 Feb 2015 14:51:03 +0100 Message-Id: <1424958666-18241-2-git-send-email-vbabka@suse.cz> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1424958666-18241-1-git-send-email-vbabka@suse.cz> References: <1424958666-18241-1-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: 1456 Lines: 33 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 --- I've noticed that proc(5) manpage is currently missing the VmSwap field altogether. Documentation/filesystems/proc.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index a07ba61..d4f56ec 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -231,6 +231,8 @@ Table 1-2: Contents of the status files (as of 2.6.30-rc7) VmLib size of shared library code VmPTE size of page table entries 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 -- 2.1.4 -- 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/