mm-vmscan-clean-up-get_scan_count-fix

avoid using unintialized_var()

Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: Satoru Moriya <satoru.moriya@hds.com>
Cc: Simon Jeons <simon.jeons@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 438c336af9d1b98b0b973c418ceca7e5abbb711d..d4f37634194eceae488f836ce901e26d92e2dfc0 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1658,7 +1658,8 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
                           unsigned long *nr)
 {
        struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
-       u64 fraction[2], uninitialized_var(denominator);
+       u64 fraction[2];
+       u64 denominator = 0;    /* gcc */
        struct zone *zone = lruvec_zone(lruvec);
        unsigned long anon_prio, file_prio;
        enum scan_balance scan_balance;