From: Chandra Seetharaman <sekharan@us.ibm.com>
Date: Sat, 27 Jun 2009 02:30:06 +0000 (-0700)
Subject: [SCSI] scsi_dh: Reference count scsi_dh_attach
X-Git-Tag: v2.6.32-rc1~689^2~207
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c10db72c94818573552fd71c89540da325efdfb;p=pandora-kernel.git

[SCSI] scsi_dh: Reference count scsi_dh_attach

Problem reported: http://marc.info/?l=dm-devel&m=124585978305866&w=2

scsi_dh does not do a refernce count for attach/detach, and this affects
the way it is supposed to work with multipath when a device is not
in the dev_list of the hardware handler.

This patch adds a reference count that counts each attach.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---

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