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SubjectRe: [RFC PATCH]vhost-blk: In-kernel accelerator for virtio block device
On 08/01/2011 12:18 PM, Liu Yuan wrote:
>> Agree. vhost-net works around the lack of async zero copy networking
>> interface. Block I/O on the other hand does have such an interface,
>> and in addition transaction rates are usually lower. All we're
>> saving is the syscall overhead.
>>
>
> Personally I too agree with Sasha Levin. But vhost-blk is the first
> fast prototype that is supposed to act as a code base to do further
> optimisation, which I plan to utilize kernel's internal stuff like
> BIO layer, that can not be accessed from user space, to maximize the
> performance for raw disk based block IO.

Is there anything in the bio layer which is not exposed by linux-aio?
Or is linux-aio slow in translating from vfs ops to bio ops?

--
error compiling committee.c: too many arguments to function



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