Commit 50417c55 authored by Fabian Frederick's avatar Fabian Frederick Committed by Linus Torvalds

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: default avatarFabian Frederick <fabf@skynet.be>
Acked-by: default avatarSeth Jennings <sjennings@variantweb.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 38515c73
......@@ -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);
......
......@@ -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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