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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250220193509.36379-6-sj@kernel.org>
Date: Thu, 20 Feb 2025 11:35:05 -0800
From: SeongJae Park <sj@...nel.org>
To: 
Cc: SeongJae Park <sj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	damon@...ts.linux.dev,
	kernel-team@...a.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [RFC PATCH 5/9] mm/damon/paddr: support only ops_filters

DAMON physical address space operation set implementation (paddr) has
updated to support both ->filters and ->ops_filters to avoid breakage
during change for the ->ops_filters setup.  Now the change is done, so
paddr can safely drop support of ->filters.  The support is only waste
of the time.  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 3e651308ba5d..432ea4efdc4b 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -253,10 +253,6 @@ static bool damos_pa_filter_out(struct damos *scheme, struct folio *folio)
 {
 	struct damos_filter *filter;
 
-	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;
@@ -285,12 +281,6 @@ 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;
@@ -543,8 +533,6 @@ 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