dm patches for 2.5.50

Latest dm patches for 2.5.50 are available here:

http://people.sistina.com/~thornber/patches/2.5-stable/2.5.50/

- Joe

Revision 1:
Four constants:

     DM_DIR,
     DM_MAX_TYPE_NAME,
     DM_NAME_LEN,
     DM_UUID_LEN

Were being declared in device-mapper.h, these are all specific to the ioctl interface, so they've been moved to dm-ioctl.h. Nobody in userland should ever include <linux/device-mapper.h> so remove ifdef __KERNEL guards.

Revision 2:
Joe,

I believe Steve and I found a bug in dm-table.c. The function open_dev() has the wrong check after the call to blkdev_get(). Thus, if the blkdev_get() call succeeds, bd_claim() is never called. Futhermore, if blkdev_get() fails (for instance, if you try to create a target to a non-existent device), bd_claim() will fail, and blkdev_put() may segfault.

--
Kevin Corry
[email protected]
http://evms.sourceforge.net/

==============================

Revision 3:
Return -ENOTBLK if lookup_device() finds the inode, but it is not a block device. [Cristoph Hellwig]

Revision 4:
No need to validate the parameters if we are doing a REMOVE_ALL command.

Revision 5:
check_device_area was comparing the bytes with sectors. [Stefan Lauterbach]