[PATCH] dm: export blkdev_driver_ioctl

Export blkdev_driver_ioctl for device-mapper.

If we get as far as the device-mapper ioctl handler, we know the ioctl is not
a standard block layer BLK* one, so we don't need to check for them a second
time and can call blkdev_driver_ioctl() directly.

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>

1 files changed, 3 insertions, 2 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index 309760b7e37f..58aab630dfc1 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -199,8 +199,8 @@ static int blkdev_locked_ioctl(struct file *file, struct block_device *bdev,
         return -ENOIOCTLCMD;
 }
 
-static int blkdev_driver_ioctl(struct inode *inode, struct file *file,
-                struct gendisk *disk, unsigned cmd, unsigned long arg)
+int blkdev_driver_ioctl(struct inode *inode, struct file *file,
+                        struct gendisk *disk, unsigned cmd, unsigned long arg)
 {
         int ret;
         if (disk->fops->unlocked_ioctl)
@@ -215,6 +215,7 @@ static int blkdev_driver_ioctl(struct inode *inode, struct file *file,
 
         return -ENOTTY;
 }
+EXPORT_SYMBOL_GPL(blkdev_driver_ioctl);
 
 int blkdev_ioctl(struct inode *inode, struct file *file, unsigned cmd,
                         unsigned long arg)