James Bottomley wrote:
This one was noticed by Gilbert Wu of Adaptec:
The libata core actually does the DMA mapping for you, so there has to
be an exception in the device drivers that *don't* do dma mapping for
ATA commands. However, since we've already done this, libsas must now
dma map any ATA commands that it wishes to issue ... and yes, this is a
horrible mess.
Can you help me understand this logic?
libsas must DMA map an ATA command... because libata also DMA maps an
ATA command? That does not make sense to me.
Jeff
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