tree 2a0d04aa4ed5b9c2d9a75158c6c0715456443e5f
parent f2405598e0678e9c93dd780f2a12fc562ece3d13
author Michael Holzheu <holzheu@de.ibm.com> 1186749153 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1186749158 +0200

[S390] vmur: add "top of queue" sanity check for reader open

If the z/VM reader is already open, it can happen that after opening the
Linux reader device, not the topmost file is processed. According the
semantics of the Linux z/VM unit record device driver, always the topmost
file has to be processed. With this fix an error is returned if that is
not the case.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>