mm, page_alloc: remove unnecessary variable from free_pcppages_bulk

commit e5b31ac2ca2cd0cf6bf2fcbb708ed01466c89aaa upstream.

The original count is never reused so it can be removed.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[dwagner: update context]
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 14bab5fa1b6564f66771ad4072fe3a47aec7ea6a..3570aaf2a6204da68b90fcd2f30f0ac699a4338a 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -835,7 +835,6 @@ static void free_pcppages_bulk(struct zone *zone, int count,
 {
        int migratetype = 0;
        int batch_free = 0;
-       int to_free = count;
        unsigned long nr_scanned;
 
        spin_lock(&zone->lock);
@@ -848,7 +847,7 @@ static void free_pcppages_bulk(struct zone *zone, int count,
         * below while (list_empty(list)) loop.
         */
        count = min(pcp->count, count);
-       while (to_free) {
+       while (count) {
                struct page *page;
                struct list_head *list;
 
@@ -868,7 +867,7 @@ static void free_pcppages_bulk(struct zone *zone, int count,
 
                /* This is the only non-empty list. Free them all. */
                if (batch_free == MIGRATE_PCPTYPES)
-                       batch_free = to_free;
+                       batch_free = count;
 
                do {
                        int mt; /* migratetype of the to-be-freed page */
@@ -886,7 +885,7 @@ static void free_pcppages_bulk(struct zone *zone, int count,
 
                        __free_one_page(page, page_to_pfn(page), zone, 0, mt);
                        trace_mm_page_pcpu_drain(page, 0, mt);
-               } while (--to_free && --batch_free && !list_empty(list));
+               } while (--count && --batch_free && !list_empty(list));
        }
        spin_unlock(&zone->lock);
 }