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authorStefan Weinhuber <wein@de.ibm.com>2011-01-05 12:48:04 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:30 +0100
commit5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b (patch)
tree20595cba0caebf7a8a5f0afac9785c7d717f3e8c /arch/s390
parenta4d26c6aeceea330ee5e0fb6b017d57e3b252d29 (diff)
downloadlinux-linaro-android-5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b.tar.gz
[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.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h
index b604a9186f8..47fcdada5d2 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