[PATCH 2/4] mm/zbud: change zbud_alloc size type to size_t

From: Dan Streetman <ddstreet@ieee.org>
To: Seth Jennings <sjennings@variantweb.net>,
	Minchan Kim <minchan@kernel.org>,
	Weijie Yang <weijie.yang@samsung.com>,
	Nitin Gupta <ngupta@vflare.org>
Cc: Dan Streetman <ddstreet@ieee.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Bob Liu <bob.liu@oracle.com>, Hugh Dickins <hughd@google.com>,
	Mel Gorman <mgorman@suse.de>, Rik van Riel <riel@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Linux-MM <linux-mm@kvack.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH 2/4] mm/zbud: change zbud_alloc size type to size_t
Date: Wed,  7 May 2014 17:51:34 -0400	[thread overview]
Message-ID: <1399499496-3216-3-git-send-email-ddstreet@ieee.org> (raw)
In-Reply-To: <1399499496-3216-1-git-send-email-ddstreet@ieee.org>

Change the type of the zbud_alloc() size param from unsigned int
to size_t.

Technically, this should not make any difference, as the zbud
implementation already restricts the size to well within either
type's limits; but as zsmalloc (and kmalloc) use size_t, and
zpool will use size_t, this brings the size parameter type
in line with zsmalloc/zpool.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Cc: Seth Jennings <sjennings@variantweb.net>
Cc: Weijie Yang <weijie.yang@samsung.com>
---

While the rest of the patches in this set are v2, this is new for
the set; previously a patch to implement zsmalloc shrinking was
here, but that's removed.  This patch instead changes the
zbud_alloc() size parameter type from unsigned int to size_t, to
be the same as the zsmalloc and zpool size param type.

 include/linux/zbud.h | 2 +-
 mm/zbud.c            | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/include/linux/zbud.h b/include/linux/zbud.h
index 0b2534e..1e9cb57 100644
--- a/include/linux/zbud.h
+++ b/include/linux/zbud.h
@@ -11,7 +11,7 @@ struct zbud_ops {
 
 struct zbud_pool *zbud_create_pool(gfp_t gfp, struct zbud_ops *ops);
 void zbud_destroy_pool(struct zbud_pool *pool);
-int zbud_alloc(struct zbud_pool *pool, unsigned int size,
+int zbud_alloc(struct zbud_pool *pool, size_t size,
 	unsigned long *handle);
 void zbud_free(struct zbud_pool *pool, unsigned long handle);
 int zbud_reclaim_page(struct zbud_pool *pool, unsigned int retries);
diff --git a/mm/zbud.c b/mm/zbud.c
index 847c01c..dd13665 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -123,7 +123,7 @@ enum buddy {
 };
 
 /* Converts an allocation size in bytes to size in zbud chunks */
-static int size_to_chunks(int size)
+static int size_to_chunks(size_t size)
 {
 	return (size + CHUNK_SIZE - 1) >> CHUNK_SHIFT;
 }
@@ -250,8 +250,7 @@ void zbud_destroy_pool(struct zbud_pool *pool)
  * -EINVAL if the @size is 0, or -ENOMEM if the pool was unable to
  * allocate a new page.
  */
-int zbud_alloc(struct zbud_pool *pool, unsigned int size,
-			unsigned long *handle)
+int zbud_alloc(struct zbud_pool *pool, size_t size, unsigned long *handle)
 {
 	int chunks, i, freechunks;
 	struct zbud_header *zhdr = NULL;
-- 
1.8.3.1

