litmus-rt.git/drivers/s390/cio, branch wip-default-clustering

[S390] cio: use all available paths for some internal I/O

2010-08-09T16:12:54+00:00

Use all available paths for the SENSE ID and STLCK commands. This
prevents deadlocks in conjunction with reserved devices.

Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

[S390] ccwreq: add ability to use all paths

2010-08-09T16:12:54+00:00

Change the ccwrequest infrastructure to use more than one channel
path per start I/O. A flag "singlepath" is added to struct
ccw_request - if set, the old behavior is used. This flag is set
for all exploiters of the ccwrequest infrastructure - so there
is no functional change through this patch.

Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

[S390] cio: ccw_device_online_store return -EINVAL in case of missing driver

2010-08-09T16:12:53+00:00

If no driver is attached to a device or the driver provides no
set_online/set_offline function, setting this device online/offline
via its sysfs online attribute will silently fail but return success.

This patch changes the behavior to return -EINVAL in those cases.

Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

[S390] cio: Log the response from the unit check handler

2010-08-09T16:12:53+00:00

Log the response from the unit check handler which triggers further
cio internal i/o processing.

Signed-off-by: Michael Ernst 
Signed-off-by: Martin Schwidefsky

[S390] cio: CHSC SIOSL Support

2010-08-09T16:12:53+00:00

A Linux interface for the CHSC command
store-I/O-operation-status-and-initiate-logging (SIOSL).
Model-dependent logging within the channel subsystem can be invoked
via a helper function or a writable subchannel device attribute.

Signed-off-by: Michael Ernst 
Signed-off-by: Martin Schwidefsky

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

2010-08-04T22:15:15+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (276 commits)
  [SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions
  [SCSI] zfcp: Introduce experimental support for DIF/DIX
  [SCSI] zfcp: Enable data division support for FCP devices
  [SCSI] zfcp: Prevent access on uninitialized memory.
  [SCSI] zfcp: Post events through FC transport class
  [SCSI] zfcp: Cleanup QDIO attachment and improve processing.
  [SCSI] zfcp: Cleanup function parameters for sbal value.
  [SCSI] zfcp: Use correct width for timer_interval field
  [SCSI] zfcp: Remove SCSI device when removing unit
  [SCSI] zfcp: Use memdup_user and kstrdup
  [SCSI] zfcp: Fix retry after failed "open port" erp action
  [SCSI] zfcp: Fail erp after timeout
  [SCSI] zfcp: Use forced_reopen in terminate_rport_io callback
  [SCSI] zfcp: Register SCSI devices after successful fc_remote_port_add
  [SCSI] zfcp: Do not try "forced close" when port is already closed
  [SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED
  [SCSI] sd: add support for runtime PM
  [SCSI] implement runtime Power Management
  [SCSI] convert to the new PM framework
  [SCSI] Unify SAM_ and SAM_STAT_ macros
  ...

[SCSI] zfcp: Enable data division support for FCP devices

2010-07-28T14:48:55+00:00

Try to enable data division support for FCP devices and indicate in
the adapter status flag if it succeeded.

Reviewed-by: Swen Schillig 
Signed-off-by: Christof Schmitt 
Signed-off-by: James Bottomley

[S390] cio: fix potential overflow in chpid descriptor

2010-07-19T07:22:50+00:00

The length filed in the chsc response block (if valid)
has a value of n*(sizeof(chp_desc))+8 (for the response
block header). When we memcopied from the response block
to the actual descriptor we copied 8 bytes too much.
The bug was not revealed since the descriptor is embedded
in struct channel_path.
Since we only write one descriptor at a time ignore the
length value and use sizeof(*desc).

Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

[S390] appldata/extmem/kvm: add missing GFP_KERNEL flag

2010-06-08T16:58:23+00:00

Add missing GFP flag to memory allocations. The part in cio only
changes a comment.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] cio: unit check handling during internal I/O

2010-05-26T21:27:09+00:00

Send unit checks that occur during internal I/O to the device driver
and react according to its return code.

Signed-off-by: Michael Ernst 
Signed-off-by: Martin Schwidefsky