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Commit 5d5ac31f authored by Shiraz Hashim's avatar Shiraz Hashim
Browse files

mm: zbud: initialize object to 0 on GFP_ZERO 



zbud_alloc if returns free object from pool must also
initialize it to 0 when asked to do so. The same is
already taken care if a fresh object is allocated.

CRs-fixed: 979234
Change-Id: Id171edf131df321385fcdcd7660d06da97689e3e
Signed-off-by: default avatarShiraz Hashim <shashim@codeaurora.org>
parent 2642c0ad

mm/zbud.c

+4 −0
Original line number Diff line number Diff line
@@ -342,6 +342,7 @@ int zbud_alloc(struct zbud_pool *pool, size_t size, gfp_t gfp, 
	struct zbud_header *zhdr = NULL;

	enum buddy bud;

	struct page *page;

	int found = 0;



	if (!size || (gfp & __GFP_HIGHMEM))

		return -EINVAL;
@@ -361,6 +362,7 @@ int zbud_alloc(struct zbud_pool *pool, size_t size, gfp_t gfp, 
				bud = FIRST;

			else

				bud = LAST;

			found = 1;

			goto found;

		}

	}
@@ -396,6 +398,8 @@ found: 
	list_add(&zhdr->lru, &pool->lru);



	*handle = encode_handle(zhdr, bud);

	if ((gfp & __GFP_ZERO) && found)

		memset((void *)*handle, 0, size);

	spin_unlock(&pool->lock);



	return 0;