From: NeilBrown <neilb@suse.de>
Date: Mon, 3 Aug 2009 00:59:58 +0000 (+1000)
Subject: md: Use revalidate_disk to effect changes in size of device.
X-Git-Tag: v2.6.31-rc6~83^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=449aad3e25358812c43afc60918c5ad3819488e7;p=pandora-kernel.git

md: Use revalidate_disk to effect changes in size of device.

As revalidate_disk calls check_disk_size_change, it will cause
any capacity change of a gendisk to be propagated to the blockdev
inode.  So use that instead of mucking about with locks and
i_size_write.

Also add a call to revalidate_disk in do_md_run and a few other places
where the gendisk capacity is changed.

Signed-off-by: NeilBrown <neilb@suse.de>
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