Re: [PATCH] [9/20] Add blk_kmalloc/blk_alloc_pages

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On Mon, 2008-03-17 at 09:27 +0100, Jens Axboe wrote:
> > In my original patchkit I didn't have blk_kmalloc etc. but just relied 
> > on the block layer bouncing everything for ISA as needed, but James
> > thought it was important that SCSI LUN scan etc do not bounce for ISA.
> > That is when I came up with these helpers.
> > 
> > You think it should go back to always bouncing? That would be fine
> > for me too. With that they wouldn't be needed.
> 
> I don't see a reason for not bouncing for scanning - James?

If we didn't know the allocation mask, or it was hard to get, then yes,
I'd agree.  However, I think that any time the kernel has the device
mask available, it should actually use it for an allocation to avoid
bouncing.

James


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