From: Michael Holzheu <holzheu@de.ibm.com>
Date: Fri, 10 Aug 2007 12:32:33 +0000 (+0200)
Subject: [S390] vmur: add "top of queue" sanity check for reader open
X-Git-Tag: v2.6.23-rc3~8^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4eac34529bce2b4cca9be90a6903c965baa8193c;p=pandora-kernel.git

[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>
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