From: Jan Kara <jack@suse.cz>
Date: Tue, 21 Feb 2017 17:09:47 +0000 (+0100)
Subject: block: Unhash also block device inode for the whole device
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d06e05c026ab58121dc6ab37c11f855ff642531e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

block: Unhash also block device inode for the whole device

Iteration over partitions in del_gendisk() omits part0. Add
bdev_unhash_inode() call for the whole device. Otherwise if the device
number gets reused, bdev inode will be still associated with the old
(stale) bdi.

Tested-by: Lekshmi Pillai <lekshmicpillai@in.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/genhd.c b/block/genhd.c
index 15b3c18d8337..2f444b87a5f2 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -676,6 +676,7 @@ void del_gendisk(struct gendisk *disk)
 	disk_part_iter_exit(&piter);
 
 	invalidate_partition(disk, 0);
+	bdev_unhash_inode(disk_devt(disk));
 	set_capacity(disk, 0);
 	disk->flags &= ~GENHD_FL_UP;