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SubjectRe: [Intel IOMMU 06/10] Avoid memory allocation failures in dma map api calls
Christoph Lameter wrote:
> On Tue, 19 Jun 2007, Keshavamurthy, Anil S wrote:
>
>
>> So far in our test scenario, we were unable to create
>> any memory allocation failure inside dma map api calls.
>
> All these functions should have gfp_t flags passed to them.

why?

> Otherwise you are locked into the use of GFP_ATOMIC.

all callers pretty much are either in irq context or with spinlocks
held. Good luck..... it's also called primarily from the PCI DMA API
which doesn't take a gfp_t argument in the first place...

so I'm not seeing the point.
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