From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vlastimil Babka Subject: [PATCH v2 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations Date: Fri, 27 Mar 2015 17:40:38 +0100 Message-ID: <1427474441-17708-2-git-send-email-vbabka@suse.cz> References: <1427474441-17708-1-git-send-email-vbabka@suse.cz> Return-path: In-Reply-To: <1427474441-17708-1-git-send-email-vbabka@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: 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 , Linux API , Konstantin Khlebnikov , Vlastimil Babka List-ID: 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 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