From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Wed, 26 Feb 2014 13:57:02 +0000 (+0900)
Subject: [SCSI] scsi_debug: prepare to enable clustering
X-Git-Tag: v3.15-rc1~136^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be4e11be99dbb36308760595ee848ef51713b4b0;p=pandora-kernel.git

[SCSI] scsi_debug: prepare to enable clustering

Currently, clustering support for scsi_debug is disabled.  This is
because there are for_each_sg() loops which assume that each sg list
element is consisted with a single page.  But enabling clustering
support, each sg list element for scsi commands can be consisted with
multiple pages.

This replaces these for_each_sg() loops with sg mapping iterator which
is capable of handling each sg list element is consisted with multiple
pages.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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