Re: [PATCH V8 3/5] scsi: Align block queue to dma_get_cache_alignment()

[Christoph Hellwig]

On Tue, Oct 17, 2017 at 04:05:40PM +0800, Huacai Chen wrote:
> In non-coherent DMA mode, kernel uses cache flushing operations to
> maintain I/O coherency, so scsi's block queue should be aligned to
> ARCH_DMA_MINALIGN. Otherwise, If a DMA buffer and a kernel structure
> share a same cache line, and if the kernel structure has dirty data,
> cache_invalidate (no writeback) will cause data corruption.

Looks fine to, and I like cleaning up the arcane 0x03 as wel.