From: Jack Wang <jinpu.wang@profitbricks.com>
Date: Thu, 12 Sep 2013 15:29:52 +0000 (+0200)
Subject: [SCSI] export device_busy for sdev
X-Git-Tag: v3.13-rc1~99^2~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=522db3c9e1a5d3e9bfbf23d9106180651338d1bd;p=pandora-kernel.git

[SCSI] export device_busy for sdev

If you mutiple devices connect to a host, we might be interested in
have an intensive I/O workload on one disk, and notice starvation on others.
This give the user more hint about current infight io for scsi device.

Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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