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Subject[PATCH] mm/damon: minor cleanup for damon_pa_young
Date
if need_lock is true but folio_trylock fails, we should return false
instead of NULL to match the return value type exactly. No functional
change intended.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/damon/paddr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index a01495cebdad..21474ae63bc7 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -152,7 +152,7 @@ static bool damon_pa_young(unsigned long paddr, unsigned long *page_sz)
need_lock = !folio_test_anon(folio) || folio_test_ksm(folio);
if (need_lock && !folio_trylock(folio)) {
folio_put(folio);
- return NULL;
+ return false;
}

rmap_walk(folio, &rwc);
--
2.23.0
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