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| author | Stefan Weinhuber <wein@de.ibm.com> | 2011-01-05 12:48:04 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:30 +0100 |
| commit | 5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b (patch) | |
| tree | 20595cba0caebf7a8a5f0afac9785c7d717f3e8c /arch/s390 | |
| parent | a4d26c6aeceea330ee5e0fb6b017d57e3b252d29 (diff) | |
| download | linux-5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b.tar.bz2 | |
[S390] dasd: Improve handling of stolen DASD reservation
If a DASD device has been reserved by a Linux system, and later
this reservation is ‘stolen’ by a second system by means of an
unconditional reserve, then the first system receives a
notification about this fact. With this patch such an event can
be either ignored, as before, or it can be used to let the device
fail all I/O request, so that the device will not block anymore.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/dasd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h index b604a9186f8e..47fcdada5d25 100644 --- a/arch/s390/include/asm/dasd.h +++ b/arch/s390/include/asm/dasd.h @@ -80,6 +80,7 @@ typedef struct dasd_information2_t { #define DASD_FEATURE_INITIAL_ONLINE 0x04 #define DASD_FEATURE_ERPLOG 0x08 #define DASD_FEATURE_FAILFAST 0x10 +#define DASD_FEATURE_FAILONSLCK 0x20 #define DASD_PARTN_BITS 2 |