linux-kernel - Re: More parallel atomic_open/d_splice_alias fun with NFS and possibly more FSes.

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Message-Id: <88A6EDE1-10F4-48FA-BCDC-D507C3E22DFA@linuxhacker.ru>
Date:	Sun, 10 Jul 2016 13:01:56 -0400
From:	Oleg Drokin <green@...uxhacker.ru>
To:	Al Viro <viro@...IV.linux.org.uk>,
	James Simmons <jsimmons@...radead.org>
Cc:	Mailing List <linux-kernel@...r.kernel.org>,
	"<linux-fsdevel@...r.kernel.org>" <linux-fsdevel@...r.kernel.org>
Subject: Re: More parallel atomic_open/d_splice_alias fun with NFS and possibly more FSes.

On Jul 4, 2016, at 10:25 PM, Al Viro wrote:

> BTW, could you take a look at
> git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git#sendmsg.lustre?
> It's a bunch of simplifications that became possible once sendmsg()/recvmsg()
> switched to iov_iter, stopped mangling the iovecs and went for predictable
> behaviour re advancing the iterator.

Thanks, this looks good to me and passes my testing (on tcp).

+typedef struct bio_vec lnet_kiov_t;

This I guess we'll need to just get rid of all lnet_kiov_t usage, but that's
something we can do ourselves, I guess.

Anyway, your patchset is based on old tree that no longer applies cleanly,
I rebased it to current staging tree to save you time in case
you want to go forward with it.
It's at git@...hub.com:verygreen/linux.git branch lustre-next-sendmsg

James, can you please give it a try on IB?

Bye,
    Oleg