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| author |   Stefan Haberland <stefan.haberland@de.ibm.com> | 2016-03-18 09:42:13 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-04-15 18:16:37 +0200 |
| commit | 5a3b7b112884f80ff19b18028fabeb4f9c035518 (patch) | |
| tree | b1b743c481c829d26fdb97043f446f9f0d682b4f /drivers/s390/block/dasd_int.h | |
| parent | s390: add CPU_BIG_ENDIAN config option (diff) | |
| download | linux-dev-5a3b7b112884f80ff19b18028fabeb4f9c035518.tar.xz linux-dev-5a3b7b112884f80ff19b18028fabeb4f9c035518.zip | |
s390/dasd: add query host access to volume support
With this feature, applications can query if a DASD volume is online
to another operating system instances by checking the online status of
all attached hosts from the storage server.
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 0f0add932e7a..6132733bcd95 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -365,6 +365,8 @@ struct dasd_discipline { int (*get_uid) (struct dasd_device *, struct dasd_uid *); void (*kick_validate) (struct dasd_device *); int (*check_attention)(struct dasd_device *, __u8); + int (*host_access_count)(struct dasd_device *); + int (*hosts_print)(struct dasd_device *, struct seq_file *); }; extern struct dasd_discipline *dasd_diag_discipline_pointer; @@ -487,6 +489,7 @@ struct dasd_device { unsigned long blk_timeout; struct dentry *debugfs_dentry; + struct dentry *hosts_dentry; struct dasd_profile profile; }; |