[Devel] [PATCH RHEL9 COMMIT] cbt: Fix BLKCBTMISC case

[Konstantin Khorenko]

The commit is pushed to "branch-rh9-5.14.vz9.1.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh9-5.14.0-4.vz9.10.37
------>
commit 8263894fb434a5dd3b5a8e4e2609d54858767898
Author: Kirill Tkhai <ktkhai at virtuozzo.com>
Date:   Mon Dec 27 15:15:09 2021 +0300

    cbt: Fix BLKCBTMISC case
    
    Add BLKCBTMISC case allowing to call blk_cbt_ioctl()
    
    https://jira.sw.ru/browse/PSBM-137054
    Fixes: commit 0b21e2b1509e ("cbt: introduce changed block tracking")
    
    Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
---
 block/ioctl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/ioctl.c b/block/ioctl.c
index ea03286cc77a..a6c0b481df00 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -529,6 +529,7 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,
 	case BLKCBTGET:
 	case BLKCBTSET:
 	case BLKCBTCLR:
+	case BLKCBTMISC:
 		return blk_cbt_ioctl(bdev, cmd, (char __user *)arg);
 	default:
 		return -ENOIOCTLCMD;