[PATCH 6.1.y 1/2] mm: shrinkers: fix debugfs file permissions

[Sasha Levin <sashal@kernel.org>]

From: John Keeping <john@metanate.com>

[ Upstream commit 2124f79de6a909630d1a62b01ecc32db9f967181 ]

The permissions for the files here are swapped as "count" is read-only and
"scan" is write-only.  While this doesn't really matter as these
permissions don't stop the files being opened for reading/writing as
appropriate, they are shown by "ls -l" and are confusing.

Link: https://lkml.kernel.org/r/20230418101906.3131303-1-john@metanate.com
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: e30453c61e18 ("mm: shrinker: fix NULL pointer dereference in debugfs")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/shrinker_debug.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
index 39c3491e28a3ef..6133c8d00f116b 100644
--- a/mm/shrinker_debug.c
+++ b/mm/shrinker_debug.c
@@ -198,9 +198,9 @@ int shrinker_debugfs_add(struct shrinker *shrinker)
 	}
 	shrinker->debugfs_entry = entry;
 
-	debugfs_create_file("count", 0220, entry, shrinker,
+	debugfs_create_file("count", 0440, entry, shrinker,
 			    &shrinker_debugfs_count_fops);
-	debugfs_create_file("scan", 0440, entry, shrinker,
+	debugfs_create_file("scan", 0220, entry, shrinker,
 			    &shrinker_debugfs_scan_fops);
 	return 0;
 }
-- 
2.53.0