From: Vivek Goyal <vgoyal@redhat.com>
Date: Thu, 29 Mar 2012 08:09:44 +0000 (+0200)
Subject: virtio-blk: Call revalidate_disk() upon online disk resize
X-Git-Tag: v3.2.48~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c32f3410245d666c5bea0e3b6e1e8aad6091b19f;p=pandora-kernel.git

virtio-blk: Call revalidate_disk() upon online disk resize

commit e9986f303dc0f285401de28cf96f42f4dd23a4a1 upstream.

If a virtio disk is open in guest and a disk resize operation is done,
(virsh blockresize), new size is not visible to tools like "fdisk -l".
This seems to be happening as we update only part->nr_sects and not
bdev->bd_inode size.

Call revalidate_disk() which should take care of it. I tested growing disk
size of already open disk and it works for me.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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