[PATCH 4.4 04/62] mm, page_alloc: remove unnecessary variable from free_pcppages_bulk

Greg Kroah-Hartman
2020-09-11T12:59:00Z

From: Mel Gorman <mgorman@techsingularity.net>

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>

---
mm/page_alloc.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -835,7 +835,6 @@ static void free_pcppages_bulk(struct zo
{
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 zo
* 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 zo

/* 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 zo

__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);
}