On 06/12/2018 16:57, Christoph Hellwig wrote:
> Out of the three callers once insists on the scratch buffer, and the
> others are fine with a new allocation. Switch those two to juse use
> pci_alloc_consistent directly, and open code the scratch buffer
> allocation in the remaining one. This avoids a case where we might
> be doing a memory allocation under a spinlock with irqs disabled.
Why not calling dma_alloc_coherent() directly instead of using the
pci_alloc_consistent() wrapper?
Johannes
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Johannes Thumshirn SUSE Labs Filesystems
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