Re: [PATCH] nfs: avoid nfs_wait_on_seqid() for NFSv4.1

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On Thu, Jul 2, 2015 at 6:47 PM, Ming Chen <mchen@xxxxxxxxxxxxxxxxx> wrote:
>
> seqid, introduced in NFSv4.0, requires state-changing operations be performed
> synchronously, and thus limits parallelism. NFSv4.1 supports "unlimited
> parallelism" by using sessions and slots; seqid is no longer used and must be
> ignored by NFSv4.1 server. However, the current nfs client always call
> nfs_wait_on_seqid() no matter the version is 4.0 or 4.1.

Please see commit 63f5f796af613 ("NFSv4.1: Allow parallel
OPEN/OPEN_DOWNGRADE/CLOSE") which first appeared in Linux-4.0.

Cheers
  Trond
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