mm/vmscan.c: try_to_freeze() returns boolean

kswapd()->try_to_freeze() is defined to return a boolean, so it's better
to use a bool to hold its return value.

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5394731..157bb11 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2963,7 +2963,7 @@ static int kswapd(void *p)
        classzone_idx = new_classzone_idx = pgdat->nr_zones - 1;
        balanced_classzone_idx = classzone_idx;
        for ( ; ; ) {
-               int ret;
+               bool ret;
 
                /*
                 * If the last balance_pgdat was unsuccessful it's unlikely a