Re: block: DMA alignment of IO buffer allocated from slab

From: Bart Van Assche
Date: Tue Sep 25 2018 - 00:10:54 EST

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On 9/24/18 8:28 PM, Matthew Wilcox wrote:

[ ... ] Because if we have to
round all allocations below 64 bytes up to 64 bytes, [ ... ]

Have you noticed that in another e-mail in this thread it has been explained why it is not necessary on x86 to align buffers allocated by kmalloc() on a 64-byte boundary even if these buffers are used for DMA?

Bart.

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