From: Christoph Hellwig <hch@lst.de>
Date: Thu, 27 Aug 2015 12:17:01 +0000 (+0200)
Subject: scsi_dh: don't allow to detach device handlers at runtime
X-Git-Tag: omap-for-v4.3/fixes-rc1~25^2~19
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d44227749500d8b88a1c079bc04f69187eaf8747;p=pandora-kernel.git

scsi_dh: don't allow to detach device handlers at runtime

The I/O submission and completion paths call into the device handler
without any synchronization agains detachment.  So disallow detaching
device handlers at runtime.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
---

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