mm/damon/core.c: avoid unintentional filtering out of schemes

commit 13b2a4b22e98ff80b888a160a2acd92d81b05925 upstream.

The function '__damos_filter_out()' causes DAMON to always filter out
schemes whose filter type is anon or memcg if its matching value is set
to false.

This commit addresses the issue by ensuring that '__damos_filter_out()'
no longer applies to filters whose type is 'anon' or 'memcg'.

Link: https://lkml.kernel.org/r/1699594629-3816-1-git-send-email-hyeongtak.ji@gmail.com
Fixes: ab9bda001b681 ("mm/damon/core: introduce address range type damos filter")
Signed-off-by: Hyeongtak Ji <hyeongtak.ji@sk.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/mm/damon/core.c b/mm/damon/core.c
index 42fea05..fd5be73 100644 (file)
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -914,7 +914,7 @@ static bool __damos_filter_out(struct damon_ctx *ctx, struct damon_target *t,
                matched = true;
                break;
        default:
-               break;
+               return false;
        }
 
        return matched == filter->matching;