Re: [PATCH] NFS: Always provide aligned buffers to the RPC read layers

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On Fri, Aug 27, 2021 at 02:00:56PM -0400, trondmy@xxxxxxxxxx wrote:
> From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
> 
> Instead of messing around with XDR padding in the RDMA layer, we should
> just give the RPC layer an aligned buffer. Try to avoid creating extra
> RPC calls by aligning to the smaller value of ALIGN(len, rsize) and
> PAGE_SIZE.

I've bisected this change to be the cause of xfstests generic/525
getting stuck when tested against a standard Linux NFS server. It was
stuck in a repeated request loop in kernel mode, and killable.

I posted a patch with a full explanation in a reply.

-- 
Dan Aloni



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