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authorFabian Frederick <fabf@skynet.be>2014-06-04 16:11:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:13 -0700
commit50417c55562c03e6746b13aee650c2bbb048fea3 (patch)
tree986c01bd15db89953aca177bd91653029aa137ed
parent38515c73398a4c58059ecf1087e844561b58ee0f (diff)
downloadop-kernel-dev-50417c55562c03e6746b13aee650c2bbb048fea3.zip
op-kernel-dev-50417c55562c03e6746b13aee650c2bbb048fea3.tar.gz
mm/zbud.c: make size unsigned like unique callsite
zbud_alloc is only called by zswap_frontswap_store with unsigned int len. Change function parameter + update >= 0 check. Signed-off-by: Fabian Frederick <fabf@skynet.be> Acked-by: Seth Jennings <sjennings@variantweb.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/zbud.h2
-rw-r--r--mm/zbud.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/zbud.h b/include/linux/zbud.h
index 2571a5c..13af0d4 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, int size, gfp_t gfp,
+int zbud_alloc(struct zbud_pool *pool, unsigned int size, gfp_t gfp,
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 9451361..01df13a 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -247,7 +247,7 @@ void zbud_destroy_pool(struct zbud_pool *pool)
* gfp arguments are invalid or -ENOMEM if the pool was unable to allocate
* a new page.
*/
-int zbud_alloc(struct zbud_pool *pool, int size, gfp_t gfp,
+int zbud_alloc(struct zbud_pool *pool, unsigned int size, gfp_t gfp,
unsigned long *handle)
{
int chunks, i, freechunks;
@@ -255,7 +255,7 @@ int zbud_alloc(struct zbud_pool *pool, int size, gfp_t gfp,
enum buddy bud;
struct page *page;
- if (size <= 0 || gfp & __GFP_HIGHMEM)
+ if (!size || (gfp & __GFP_HIGHMEM))
return -EINVAL;
if (size > PAGE_SIZE - ZHDR_SIZE_ALIGNED - CHUNK_SIZE)
return -ENOSPC;
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