linux-kernel - [PATCH 5/9] mm/damon/paddr: support only damos->ops

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Message-Id: <20250304211913.53574-6-sj@kernel.org>
Date: Tue,  4 Mar 2025 13:19:09 -0800
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	damon@...ts.linux.dev,
	kernel-team@...a.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 5/9] mm/damon/paddr: support only damos->ops_filters

DAMON physical address space operation set implementation (paddr)
started handling both damos->filters and damos->ops_filters to avoid
breakage during the change for the ->ops_filters setup.  Now the change
is done, so paddr's support of ->filters is only a waste that can safely
be dropped.  Remove it.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/paddr.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 2b1ea568a431..dded659bb110 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -256,10 +256,6 @@ static bool damos_pa_filter_out(struct damos *scheme, struct folio *folio)
 	if (scheme->core_filters_allowed)
 		return false;
 
-	damos_for_each_filter(filter, scheme) {
-		if (damos_pa_filter_match(filter, folio))
-			return !filter->allow;
-	}
 	damos_for_each_ops_filter(filter, scheme) {
 		if (damos_pa_filter_match(filter, folio))
 			return !filter->allow;
@@ -288,12 +284,6 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s,
 	struct folio *folio;
 
 	/* check access in page level again by default */
-	damos_for_each_filter(filter, s) {
-		if (filter->type == DAMOS_FILTER_TYPE_YOUNG) {
-			install_young_filter = false;
-			break;
-		}
-	}
 	damos_for_each_ops_filter(filter, s) {
 		if (filter->type == DAMOS_FILTER_TYPE_YOUNG) {
 			install_young_filter = false;
@@ -546,8 +536,6 @@ static bool damon_pa_scheme_has_filter(struct damos *s)
 {
 	struct damos_filter *f;
 
-	damos_for_each_filter(f, s)
-		return true;
 	damos_for_each_ops_filter(f, s)
 		return true;
 	return false;
-- 
2.39.5