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

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Date:	Tue, 17 Apr 2007 21:19:46 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Florin Iucha <florin@...ha.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Adrian Bunk <bunk@...sta.de>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] 2.6.21-rc7 NFS writes: fix a series of issues

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.

Cheers
  Trond
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