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authorMinchan Kim <minchan@kernel.org>2015-09-09 01:04:49 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-09 01:35:28 +0300
commit6cbf16b3b66a61b9c6df8f2ed4ac346cb427f28a (patch)
tree51eb943fa8a3dbaa304226ae57c3275514d0ec06
parentad9d5e175a77a253f52a7259a7c918b8351d99f1 (diff)
downloadlinux-6cbf16b3b66a61b9c6df8f2ed4ac346cb427f28a.tar.xz
zsmalloc: use class->pages_per_zspage
There is no need to recalcurate pages_per_zspage in runtime. Just use class->pages_per_zspage to avoid unnecessary runtime overhead. Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/zsmalloc.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index c10885ca87a4..ce08d043becd 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1723,7 +1723,7 @@ static unsigned long zs_can_compact(struct size_class *class)
obj_wasted /= get_maxobj_per_zspage(class->size,
class->pages_per_zspage);
- return obj_wasted * get_pages_per_zspage(class->size);
+ return obj_wasted * class->pages_per_zspage;
}
static void __zs_compact(struct zs_pool *pool, struct size_class *class)
@@ -1761,8 +1761,7 @@ static void __zs_compact(struct zs_pool *pool, struct size_class *class)
putback_zspage(pool, class, dst_page);
if (putback_zspage(pool, class, src_page) == ZS_EMPTY)
- pool->stats.pages_compacted +=
- get_pages_per_zspage(class->size);
+ pool->stats.pages_compacted += class->pages_per_zspage;
spin_unlock(&class->lock);
cond_resched();
spin_lock(&class->lock);