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authorMilan Broz <mbroz@redhat.com>2006-10-03 01:15:18 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-03 08:04:13 -0700
commitab17ffa440cb54ca64111fa4922ba12496fcc8af (patch)
treeeda3d4c68dc6790374988772bda5fd9ba6d87651 /drivers/md/dm-linear.c
parentaa129a2247b164173d45da8ad43cca5de9211403 (diff)
downloadop-kernel-dev-ab17ffa440cb54ca64111fa4922ba12496fcc8af.zip
op-kernel-dev-ab17ffa440cb54ca64111fa4922ba12496fcc8af.tar.gz
[PATCH] dm linear: support ioctls
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>
Diffstat (limited to 'drivers/md/dm-linear.c')
-rw-r--r--drivers/md/dm-linear.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 47b3c62..c58f072 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -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)
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