[RFC PATCH 2/9] mm/damon/paddr: support ops_filters
From: SeongJae Park
Date: Thu Feb 20 2025 - 14:35:29 EST
DAMON keeps all DAMOS filters in damos->filters, and will make
damos->ops_filters to have all operations layer handled DAMOS filters
with upcoming changes. But DAMON physical address space operations set
implementation (paddr) is handling only damos->filters. To avoid any
breakage during the upcoming change, make paddr to handle both. After
the change is made, ->filters support on paddr can be safely removed.
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
mm/damon/paddr.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 25090230da17..3e651308ba5d 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -257,6 +257,10 @@ static bool damos_pa_filter_out(struct damos *scheme, struct folio *folio)
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;
+ }
return false;
}
@@ -287,6 +291,12 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s,
break;
}
}
+ damos_for_each_ops_filter(filter, s) {
+ if (filter->type == DAMOS_FILTER_TYPE_YOUNG) {
+ install_young_filter = false;
+ break;
+ }
+ }
if (install_young_filter) {
filter = damos_new_filter(
DAMOS_FILTER_TYPE_YOUNG, true, false);
@@ -535,6 +545,8 @@ static bool damon_pa_scheme_has_filter(struct damos *s)
damos_for_each_filter(f, s)
return true;
+ damos_for_each_ops_filter(f, s)
+ return true;
return false;
}
--
2.39.5