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 <zhenzhong.duan@xxxxxxxxxx>
---
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;
}
total_pages_to_unuse = total_pages - target_pages;
return __frontswap_unuse_pages(total_pages_to_unuse, pages_to_unuse, type);
@@ -302,7 +302,7 @@ void frontswap_shrink(unsigned long target_pages)
spin_lock(&swap_lock);
ret = __frontswap_shrink(target_pages, &pages_to_unuse, &type);
spin_unlock(&swap_lock);
- if (ret == 0 && pages_to_unuse)
+ if (ret == 0)
try_to_unuse(type, true, pages_to_unuse);
return;
}
--
1.7.3
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