pages_to_unuse is set to 0 to unuse all frontswap pages
But that doesn't happen since a wrong condition in frontswap_shrink
cancels it.

Signed-off-by: Zhenzhong Duan <redacted>
---
 mm/frontswap.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/frontswap.c b/mm/frontswap.c
index 6b3e71a..db2a86f 100644
--- a/mm/frontswap.c
+++ b/mm/frontswap.c

@@ -275,7 +275,7 @@ static int __frontswap_shrink(unsigned long target_pages,
 	if (total_pages <= target_pages) {
 		/* Nothing to do */
 		*pages_to_unuse = 0;
-		return 0;
+		return 1;
 	}