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dma-direct: lift gfp_t manipulation out of__dma_direct_alloc_pages 

Move the detailed gfp_t setup from __dma_direct_alloc_pages into the
caller to clean things up a little.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
This commit is contained in:
Christoph Hellwig 2020-08-17 17:14:28 +02:00
parent 2f5388a29b
commit 3773dfe6ea
1 changed files with 5 additions and 7 deletions
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12
kernel/dma/direct.c
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@ -108,7 +108,7 @@ static inline bool dma_should_free_from_pool(struct device *dev,
}
static struct page *__dma_direct_alloc_pages(struct device *dev, size_t size,
gfp_t gfp, unsigned long attrs)
gfp_t gfp)
{
int node = dev_to_node(dev);
struct page *page = NULL;
@ -116,11 +116,6 @@ static struct page *__dma_direct_alloc_pages(struct device *dev, size_t size,
WARN_ON_ONCE(!PAGE_ALIGNED(size));
if (attrs & DMA_ATTR_NO_WARN)
gfp |= __GFP_NOWARN;
/* we always manually zero the memory once we are done: */
gfp &= ~__GFP_ZERO;
gfp |= dma_direct_optimal_gfp_mask(dev, dev->coherent_dma_mask,
&phys_limit);
page = dma_alloc_contiguous(dev, size, gfp);
@ -164,6 +159,8 @@ void *dma_direct_alloc(struct device *dev, size_t size,
return arch_dma_alloc(dev, size, dma_handle, gfp, attrs);
size = PAGE_ALIGN(size);
if (attrs & DMA_ATTR_NO_WARN)
gfp |= __GFP_NOWARN;
if (dma_should_alloc_from_pool(dev, gfp, attrs)) {
u64 phys_mask;
@ -177,7 +174,8 @@ void *dma_direct_alloc(struct device *dev, size_t size,
goto done;
}
page = __dma_direct_alloc_pages(dev, size, gfp, attrs);
/* we always manually zero the memory once we are done */
page = __dma_direct_alloc_pages(dev, size, gfp & ~__GFP_ZERO);
if (!page)
return NULL;