From 4eac34529bce2b4cca9be90a6903c965baa8193c Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 10 Aug 2007 14:32:33 +0200 Subject: [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 Signed-off-by: Martin Schwidefsky --- drivers/s390/char/vmur.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/s390/char/vmur.h') diff --git a/drivers/s390/char/vmur.h b/drivers/s390/char/vmur.h index 522a9dfaa27..2b3c564e047 100644 --- a/drivers/s390/char/vmur.h +++ b/drivers/s390/char/vmur.h @@ -53,6 +53,7 @@ struct file_control_block { #define FLG_SYSTEM_HOLD 0x04 #define FLG_CP_DUMP 0x10 #define FLG_USER_HOLD 0x20 +#define FLG_IN_USE 0x80 /* * A struct urdev is created for each ur device that is made available -- cgit v1.2.3-18-g5258