1 files changed, 82 insertions, 0 deletions
diff --git a/patches/next/mm-damon-paddr-implement-damon_folio_mkold.patch b/patches/next/mm-damon-paddr-implement-damon_folio_mkold.patch
new file mode 100644
index 0000000..0512926
--- /dev/null
+++ b/patches/next/mm-damon-paddr-implement-damon_folio_mkold.patch
@@ -0,0 +1,82 @@
+From a687a04aadb8ec0e160da4419ad88071d876f353 Mon Sep 17 00:00:00 2001
+From: SeongJae Park <sj@kernel.org>
+Date: Fri, 8 Mar 2024 17:54:17 -0800
+Subject: [PATCH] mm/damon/paddr: implement damon_folio_mkold()
+
+damon_pa_mkold() receives a physical address, finds the folio covering
+the address, and makes the folio as old.  Split the internal logic for
+checking access to the given folio, for future reuse of the logic.
+Also, change the name of the rmap walker from __damon_pa_mkold() to
+damon_folio_mkold_one() for more consistent naming.
+
+Signed-off-by: SeongJae Park <sj@kernel.org>
+---
+ mm/damon/paddr.c | 27 ++++++++++++++++-----------
+ 1 file changed, 16 insertions(+), 11 deletions(-)
+
+diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
+index 25c3ba2a9eaf..310b803c6277 100644
+--- a/mm/damon/paddr.c
++++ b/mm/damon/paddr.c
+@@ -16,8 +16,8 @@
+ #include "../internal.h"
+ #include "ops-common.h"
+ 
+-static bool __damon_pa_mkold(struct folio *folio, struct vm_area_struct *vma,
+-		unsigned long addr, void *arg)
++static bool damon_folio_mkold_one(struct folio *folio,
++		struct vm_area_struct *vma, unsigned long addr, void *arg)
+ {
+ 	DEFINE_FOLIO_VMA_WALK(pvmw, folio, vma, addr, 0);
+ 
+@@ -31,33 +31,38 @@ static bool __damon_pa_mkold(struct folio *folio, struct vm_area_struct *vma,
+ 	return true;
+ }
+ 
+-static void damon_pa_mkold(unsigned long paddr)
++static void damon_folio_mkold(struct folio *folio)
+ {
+-	struct folio *folio = damon_get_folio(PHYS_PFN(paddr));
+ 	struct rmap_walk_control rwc = {
+-		.rmap_one = __damon_pa_mkold,
++		.rmap_one = damon_folio_mkold_one,
+ 		.anon_lock = folio_lock_anon_vma_read,
+ 	};
+ 	bool need_lock;
+ 
+-	if (!folio)
+-		return;
+-
+ 	if (!folio_mapped(folio) || !folio_raw_mapping(folio)) {
+ 		folio_set_idle(folio);
+-		goto out;
++		return;
+ 	}
+ 
+ 	need_lock = !folio_test_anon(folio) || folio_test_ksm(folio);
+ 	if (need_lock && !folio_trylock(folio))
+-		goto out;
++		return;
+ 
+ 	rmap_walk(folio, &rwc);
+ 
+ 	if (need_lock)
+ 		folio_unlock(folio);
+ 
+-out:
++}
++
++static void damon_pa_mkold(unsigned long paddr)
++{
++	struct folio *folio = damon_get_folio(PHYS_PFN(paddr));
++
++	if (!folio)
++		return;
++
++	damon_folio_mkold(folio);
+ 	folio_put(folio);
+ }
+ 
+-- 
+2.39.2
+