linux-kernel - Re: [PATCH 4/5] mm: zswap: add basic meminfo and vmstat coverage

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Message-ID: <Ymme244DTWy/tAli@cmpxchg.org>
Date:   Wed, 27 Apr 2022 15:51:55 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Michal Hocko <mhocko@...e.com>, Roman Gushchin <guro@...com>,
        Shakeel Butt <shakeelb@...gle.com>,
        Seth Jennings <sjenning@...hat.com>,
        Dan Streetman <ddstreet@...e.org>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH 4/5] mm: zswap: add basic meminfo and vmstat coverage

On Wed, Apr 27, 2022 at 02:53:10PM -0400, Johannes Weiner wrote:
> [...] and a delta fixlet for 4/5.

>From 35851ad3ddbf30122d755bdf8abea6dc188492a2 Mon Sep 17 00:00:00 2001
From: Johannes Weiner <hannes@...xchg.org>
Date: Wed, 27 Apr 2022 15:44:23 -0400
Subject: [PATCH 6/7] mm: zswap: add basic meminfo and vmstat coverage fix

Signed-off-by: Johannes Weiner <hannes@...xchg.org>
---
 Documentation/filesystems/proc.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index 736ed384750c..8b5a94cfa722 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -964,6 +964,8 @@ Example output. You may not have all of these fields.
     Mlocked:               0 kB
     SwapTotal:             0 kB
     SwapFree:              0 kB
+    Zswap:              1904 kB
+    Zswapped:           7792 kB
     Dirty:                12 kB
     Writeback:             0 kB
     AnonPages:       4654780 kB
@@ -1055,6 +1057,10 @@ SwapTotal
 SwapFree
               Memory which has been evicted from RAM, and is temporarily
               on the disk
+Zswap
+              Memory consumed by the zswap backend (compressed size)
+Zswapped
+              Amount of anonymous memory stored in zswap (original size)
 Dirty
               Memory which is waiting to get written back to the disk
 Writeback
-- 
2.35.3