From: Mikulas Patocka <mpatocka@redhat.com>
Date: Wed, 2 Jul 2014 16:46:23 +0000 (-0400)
Subject: block: provide compat ioctl for BLKZEROOUT
X-Git-Tag: firefly_0821_release~3679^2~1749
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=668b7a05f2fa59c60ca9820269e3d8dfaa218693;p=firefly-linux-kernel-4.4.55.git

block: provide compat ioctl for BLKZEROOUT

commit 3b3a1814d1703027f9867d0f5cbbfaf6c7482474 upstream.

This patch provides the compat BLKZEROOUT ioctl. The argument is a pointer
to two uint64_t values, so there is no need to translate it.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 7c668c8a6f95..21ad6869a5ce 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -689,6 +689,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 	case BLKROSET:
 	case BLKDISCARD:
 	case BLKSECDISCARD:
+	case BLKZEROOUT:
 	/*
 	 * the ones below are implemented in blkdev_locked_ioctl,
 	 * but we call blkdev_ioctl, which gets the lock for us