[PATCH] dm: extract device limit setting

Separate the setting of device I/O limits from dm_get_device().  dm-loop will
use this.

Signed-off-by: Bryn Reeves <breeves@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>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 8cbc46b8e3db..7a48d428d0a1 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -72,6 +72,11 @@ typedef int (*dm_ioctl_fn) (struct dm_target *ti, struct inode *inode,
 void dm_error(const char *message);
 
 /*
+ * Combine device limits.
+ */
+void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev);
+
+/*
  * Constructors should call these functions to ensure destination devices
  * are opened/closed correctly.
  * FIXME: too many arguments.