Re: [PATCH v1 06/12] xprtrdma: Always provide a write list when sending NFS READ

Sagi Grimberg
2015-07-12T14:42:11Z

On 7/9/2015 11:42 PM, Chuck Lever wrote:
> The client has been setting up a reply chunk for NFS READs that are
> smaller than the inline threshold. This is not efficient: both the
> server and client CPUs have to copy the reply's data payload into
> and out of the memory region that is then transferred via RDMA.
>
> Using the write list, the data payload is moved by the device and no
> extra data copying is necessary.
>
> Signed-off-by: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

Reviewed-By: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
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