From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Thu, 29 May 2008 09:08:26 +0000 (+0200)
Subject: virtio_blk: check for hardsector size from host
X-Git-Tag: v2.6.27-rc1~504^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=066f4d82a67f621ddd547bfa4b9c94631d8457b0;p=pandora-kernel.git

virtio_blk: check for hardsector size from host

Currently virtio_blk assumes a 512 byte hard sector size. This can cause
trouble / performance issues if the backing has a different block size
(like a file on an ext3 file system formatted with 4k block size or a dasd).

Lets add a feature flag that tells the guest to use a different hard sector
size than 512 byte.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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