From: Christoph Hellwig <hch@lst.de>
Date: Wed, 10 Sep 2014 15:23:32 +0000 (-0700)
Subject: pnfs/blocklayout: remove read-modify-write handling in bl_write_pagelist
X-Git-Tag: fixes-for-v3.18-merge-window~10^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a6fd1f004fcaf3dd1c28a7cd16406c8318eb64a;p=pandora-kernel.git

pnfs/blocklayout: remove read-modify-write handling in bl_write_pagelist

Use the new PNFS_READ_WHOLE_PAGE flag to offload read-modify-write
handling to core nfs code, and remove a huge chunk of deadlock prone
mess from the block layout writeback path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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