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Diffstat (limited to 'mm/dmapool.c')
-rw-r--r--mm/dmapool.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/mm/dmapool.c b/mm/dmapool.c
index 4b657099111f..71a8998cd03a 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -337,7 +337,7 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
/* pool_alloc_page() might sleep, so temporarily drop &pool->lock */
spin_unlock_irqrestore(&pool->lock, flags);
- page = pool_alloc_page(pool, mem_flags);
+ page = pool_alloc_page(pool, mem_flags & (~__GFP_ZERO));
if (!page)
return NULL;
@@ -375,9 +375,14 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
break;
}
}
- memset(retval, POOL_POISON_ALLOCATED, pool->size);
+ if (!(mem_flags & __GFP_ZERO))
+ memset(retval, POOL_POISON_ALLOCATED, pool->size);
#endif
spin_unlock_irqrestore(&pool->lock, flags);
+
+ if (mem_flags & __GFP_ZERO)
+ memset(retval, 0, pool->size);
+
return retval;
}
EXPORT_SYMBOL(dma_pool_alloc);