linux-kernel - Re: [PATCH 0/4] 2.6.21-rc7 NFS writes: fix a series of issues

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Date:	Tue, 17 Apr 2007 22:30:55 -0500
From:	florin@...ha.net (Florin Iucha)
To:	Trond Myklebust <Trond.Myklebust@...app.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Adrian Bunk <bunk@...sta.de>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] 2.6.21-rc7 NFS writes: fix a series of issues

On Tue, Apr 17, 2007 at 11:06:05PM -0400, Trond Myklebust wrote:
> > > I've split the issues introduced by the 2.6.21-rcX write code up into 4
> > > subproblems.
> > > 
> > > The first patch is just a cleanup in order to ease review.
> > > 
> > > Patch number 2 ensures that we never release the PG_writeback flag until
> > > _after_ we've either discarded the unstable request altogether, or put it
> > > on the nfs_inode's commit or dirty lists.
> > > 
> > > Patch number 3 fixes the 'desynchronized value of nfs_i.ncommit' error. It
> > > uses the PG_NEED_COMMIT flag as an indicator for whether or not the request
> > > may be redirtied.
> > > 
> > > Patch number 4 protects the NFS '.set_page_dirty' address_space operation
> > > against races with nfs_inode_add_request.
> > 
> > For 2.6.21, yes?
> 
> Right. A couple of nasty regressions have been sighted. This series
> attempts to deal with them all.

The good news is that the Gnome session log-in progresses to the point
where both top and bottom bars are painted (gray) and the bottom bar
is populated with icons (2.6.21-rc7 vanilla stops after displaying the
splash).  The bad news is that it stops there.

Big-copy fails as well, after 2.5G transferred.

The process traces are at:

   http://iucha.net/nfs/21-rc7-nfs1/gnome-session
   http://iucha.net/nfs/21-rc7-nfs1/big-copy

Regards,
florin

-- 
Bruce Schneier expects the Spanish Inquisition.
      http://geekz.co.uk/schneierfacts/fact/163

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