[PATCH 2/2] mm: fix declarations of nr, delta and nr_pagecache_reclaimable

Alexandru Moise
2015-09-27T18:04:50Z

The nr variable is meant to be returned by a function which is
declared as returning "unsigned long", so declare nr as such.

Lower down we should also declare delta and nr_pagecache_reclaimable
as being unsigned longs because they're used to store the values
returned by zone_page_state() and zone_unmapped_file_pages() which
also happen to return unsigned integers.

Signed-off-by: Alexandru Moise <00moses.alexander00@gmail.com>
---
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7f63a93..41e254e 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -194,7 +194,7 @@ static bool sane_reclaim(struct scan_control *sc)

static unsigned long zone_reclaimable_pages(struct zone *zone)
{
- int nr;
+ unsigned long nr;

nr = zone_page_state(zone, NR_ACTIVE_FILE) +
zone_page_state(zone, NR_INACTIVE_FILE);
@@ -3698,8 +3698,8 @@ static inline unsigned long zone_unmapped_file_pages(struct zone *zone)
/* Work out how many page cache pages we can reclaim in this reclaim_mode */
static long zone_pagecache_reclaimable(struct zone *zone)
{
- long nr_pagecache_reclaimable;
- long delta = 0;
+ unsigned long nr_pagecache_reclaimable;
+ unsigned long delta = 0;

/*
* If RECLAIM_UNMAP is set, then all file pages are considered
--
2.5.3