From: Christoph Hellwig <hch@lst.de>
Date: Tue, 5 May 2009 14:08:56 +0000 (+0200)
Subject: cleanup sync_supers
X-Git-Tag: v2.6.31-rc1~375^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e5004753388dcf5e1b8a52ac0ab807d232340fbb;p=pandora-kernel.git

cleanup sync_supers

Merge the write_super helper into sync_super and move the check for
->write_super earlier so that we can avoid grabbing a reference to
a superblock that doesn't have it.

While we're at it also add a little comment documenting sync_supers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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