linux-kernel - [PATCH 06/10] Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file

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Message-Id: <20240503180318.72798-7-sj@kernel.org>
Date: Fri,  3 May 2024 11:03:14 -0700
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	Jonathan Corbet <corbet@....net>,
	damon@...ts.linux.dev,
	linux-mm@...ck.org,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH 06/10] Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file

The example usage of DAMOS filter sysfs files, specifically the part of
'matching' file writing for memcg type filter, is wrong.  The intention
is to exclude pages of a memcg that already getting enough care from a
given scheme, but the example is setting the filter to apply the scheme
to only the pages of the memcg.  Fix it.

Fixes: 9b7f9322a530 ("Docs/admin-guide/mm/damon/usage: document DAMOS filters of sysfs")
Closes: https://lore.kernel.org/r/20240317191358.97578-1-sj@kernel.org
Cc: <stable@...r.kernel.org> # 6.3.x
Signed-off-by: SeongJae Park <sj@...nel.org>
---
 Documentation/admin-guide/mm/damon/usage.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index 69bc8fabf378..3ce3f0aaa1d5 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -434,7 +434,7 @@ pages of all memory cgroups except ``/having_care_already``.::
     # # further filter out all cgroups except one at '/having_care_already'
     echo memcg > 1/type
     echo /having_care_already > 1/memcg_path
-    echo N > 1/matching
+    echo Y > 1/matching
 
 Note that ``anon`` and ``memcg`` filters are currently supported only when
 ``paddr`` :ref:`implementation <sysfs_context>` is being used.
-- 
2.39.2