summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/pci-dma.c
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2008-06-16 11:27:18 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-16 11:27:18 +0200
commit33ee375b2ea5dd11581a57d67bedd0ca39b19a5e (patch)
tree411d3a04936e281e54680ad082f98d985561bce5 /arch/x86/kernel/pci-dma.c
parent6703f6d10dcd3316e03641a5ecaa6c8a04374d98 (diff)
parent066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff)
Merge branch 'linus' into x86/gart
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 7747bc82b11..09c4dac11b5 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -379,6 +379,7 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
struct page *page;
unsigned long dma_mask = 0;
dma_addr_t bus;
+ int noretry = 0;
/* ignore region specifiers */
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
@@ -398,20 +399,25 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
if (dev->dma_mask == NULL)
return NULL;
- /* Don't invoke OOM killer */
- gfp |= __GFP_NORETRY;
+ /* Don't invoke OOM killer or retry in lower 16MB DMA zone */
+ if (gfp & __GFP_DMA)
+ noretry = 1;
#ifdef CONFIG_X86_64
/* Why <=? Even when the mask is smaller than 4GB it is often
larger than 16MB and in this case we have a chance of
finding fitting memory in the next higher zone first. If
not retry with true GFP_DMA. -AK */
- if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA))
+ if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA)) {
gfp |= GFP_DMA32;
+ if (dma_mask < DMA_32BIT_MASK)
+ noretry = 1;
+ }
#endif
again:
- page = dma_alloc_pages(dev, gfp, get_order(size));
+ page = dma_alloc_pages(dev,
+ noretry ? gfp | __GFP_NORETRY : gfp, get_order(size));
if (page == NULL)
return NULL;