From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Wed, 18 Aug 2010 12:11:11 +0000 (+0900)
Subject: nilfs2: wait for discard to finish
X-Git-Tag: v2.6.36-rc2~4^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1cb0c924fa2d616e5e3b5bc62d97191aac9ff442;p=pandora-kernel.git

nilfs2: wait for discard to finish

nilfs_discard_segment() doesn't wait for completion of discard
requests.  This specifies BLKDEV_IFL_WAIT flag when calling
blkdev_issue_discard() in order to fix the sync failure.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Christoph Hellwig <hch@lst.de>
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