From: Michael S. Tsirkin <mst@redhat.com>
Date: Sun, 30 Oct 2011 19:29:59 +0000 (+0200)
Subject: virtio-blk: use ida to allocate disk index
X-Git-Tag: v3.2-rc1~83^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5087a50e66bd51b6e72c60bce4757a42b93f6b2c;p=pandora-kernel.git

virtio-blk: use ida to allocate disk index

Based on a patch by Mark Wu <dwu@redhat.com>

Current index allocation in virtio-blk is based on a monotonically
increasing variable "index". This means we'll run out of numbers
after a while.  It also could cause confusion about the disk
name in the case of hot-plugging disks.
Change virtio-blk to use ida to allocate index, instead.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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