From f68eb1e71a92765ffd8eb68466a41b48f2fbba04 Mon Sep 17 00:00:00 2001
From: Vishal Verma <vishal.l.verma@intel.com>
Date: Tue, 12 May 2015 13:48:53 -0400
Subject: [PATCH] fs/block_dev.c: skip rw_page if bdev has integrity

If a block device has bio integrity enabled, rw_page will bypass the
integrity payload, which is undesirable. Skip rw_page if this is the
case.

Currently brd and zram provide rw_page, and the proposed 'nd' drivers
will too.

Cc: Jens Axboe <axboe@fb.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Suggested-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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