[PATCH] dm linear: support ioctls (ab17ffa4) · Commits · 戴 / test

When an ioctl is performed on a device with a linear target, simply pass it on to the underlying block device. Note that the ioctl will pass through the filtering in blkdev_ioctl() twice. Signed-off-by:

Milan Broz <mbroz@redhat.com> Signed-off-by:

Alasdair G Kergon <agk@redhat.com> Signed-off-by:

Andrew Morton <akpm@osdl.org> Signed-off-by:

Linus Torvalds <torvalds@osdl.org>

drivers/md/dm-linear.c

+12 −1

Original line number	Diff line number	Diff line
		@@ -98,14 +98,25 @@ static int linear_status(struct dm_target *ti, status_type_t type,
		return 0;
		}

		static int linear_ioctl(struct dm_target ti, struct inode inode,
		struct file *filp, unsigned int cmd,
		unsigned long arg)
		{
		struct linear_c lc = (struct linear_c ) ti->private;
		struct block_device *bdev = lc->dev->bdev;

		return blkdev_ioctl(bdev->bd_inode, filp, cmd, arg);
		}

		static struct target_type linear_target = {
		.name = "linear",
		.version= {1, 0, 1},
		.version= {1, 0, 2},
		.module = THIS_MODULE,
		.ctr = linear_ctr,
		.dtr = linear_dtr,
		.map = linear_map,
		.status = linear_status,
		.ioctl = linear_ioctl,
		};

		int __init dm_linear_init(void)

Admin message