[SCSI] scsi_debug: prepare to enable clustering

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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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Akinobu Mita 2014-02-26 22:57:02 +09:00 • committed by James Bottomley

parent c5af0db96b

commit be4e11be99

1 changed files with 59 additions and 50 deletions

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107

drivers/scsi/scsi_debug.c

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