From: Keith Busch <keith.busch@intel.com>
Date: Wed, 10 Sep 2014 23:21:14 +0000 (-0600)
Subject: NVMe: Add revalidate_disk callback
X-Git-Tag: omap-for-v3.19/fixes-rc1~94^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b9dbf7fe02d85f70e8efc1c12c070206c0d5c5f;p=pandora-kernel.git

NVMe: Add revalidate_disk callback

This adds a callback to revalidate the disk and change its block size
and capacity if needed. Before, a user would have to remove + rescan
an entire device if they changed the logical block size using an NVMe
Format or other vendor specific command; now they can just run something
that issues the BLKRRPART IOCTL, like

 # hdparm -z /dev/nvmeXnY

This can also be used in response to the 1.2 Spec's Namespace Attribute
Change asynchronous event.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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