linux-stable.git/drivers/s390/block, branch linux-2.6.36.y

[S390] dasd: fix format string types

2010-08-13T08:06:54+00:00

Get rid of these warnings:

drivers/s390/block/dasd.c: In function '__dasd_device_check_expire':
drivers/s390/block/dasd.c:1330: warning: format '%i' expects type 'int', but argument 4 has type 'long unsigned int'
drivers/s390/block/dasd.c:1337: warning: format '%i' expects type 'int', but argument 4 has type 'long unsigned int'

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

Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block

2010-08-10T22:22:42+00:00

* 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits)
  block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n
  xen-blkfront: fix missing out label
  blkdev: fix blkdev_issue_zeroout return value
  block: update request stacking methods to support discards
  block: fix missing export of blk_types.h
  writeback: fix bad _bh spinlock nesting
  drbd: revert "delay probes", feature is being re-implemented differently
  drbd: Initialize all members of sync_conf to their defaults [Bugz 315]
  drbd: Disable delay probes for the upcomming release
  writeback: cleanup bdi_register
  writeback: add new tracepoints
  writeback: remove unnecessary init_timer call
  writeback: optimize periodic bdi thread wakeups
  writeback: prevent unnecessary bdi threads wakeups
  writeback: move bdi threads exiting logic to the forker thread
  writeback: restructure bdi forker loop a little
  writeback: move last_active to bdi
  writeback: do not remove bdi from bdi_list
  writeback: simplify bdi code a little
  writeback: do not lose wake-ups in bdi threads
  ...

Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and
drivers/scsi/scsi_error.c as per Jens.

Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

2010-08-10T21:01:26+00:00

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] dasd: tunable missing interrupt handler
  [S390] dasd: allocate fallback cqr for reserve/release
  [S390] topology: use default MC domain initializer
  [S390] initrd: change default load address
  [S390] cmm, smsgiucv_app: convert sender to uppercase
  [S390] cmm: add missing __init/__exit annotations
  [S390] cio: use all available paths for some internal I/O
  [S390] ccwreq: add ability to use all paths
  [S390] cio: ccw_device_online_store return -EINVAL in case of missing driver
  [S390] cio: Log the response from the unit check handler
  [S390] cio: CHSC SIOSL Support

s390: remove WARN_ON for misc_deregister() failures

2010-08-10T03:45:06+00:00

The previous change added WARN_ON() in misc_deregister().  So it is not
necessary to WARN_ON() misc_deregister() failure by callers.

Signed-off-by: Akinobu Mita 
Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[S390] dasd: tunable missing interrupt handler

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

This feature provides a user interface to specify the timeout for
missing interrupts for standard I/O operations.

Signed-off-by: Stefan Haberland 
Signed-off-by: Martin Schwidefsky

[S390] dasd: allocate fallback cqr for reserve/release

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

The DASD reserve and release ioctls use the preallocated memory pool
of the respective device to build their CCW requests. However, when
the device is busy, the pool may already be empty and the ioctl fails.
Usually this can be recovered by calling the ioctl again, but in
a situation in which we need to issue an unconditional reserve to
make a device operational again, this would be not recoverable.
To avoid a failure due to lack of memory, DASD device driver will
preallocate enough memory for a single reserve/release request, which
can be used if normal allocation fails.

Signed-off-by: Stefan Weinhuber 
Signed-off-by: Martin Schwidefsky

block: push down BKL into .open and .release

2010-08-07T16:25:34+00:00

The open and release block_device_operations are currently
called with the BKL held. In order to change that, we must
first make sure that all drivers that currently rely
on this have no regressions.

This blindly pushes the BKL into all .open and .release
operations for all block drivers to prepare for the
next step. The drivers can subsequently replace the BKL
with their own locks or remove it completely when it can
be shown that it is not needed.

The functions blkdev_get and blkdev_put are the only
remaining users of the big kernel lock in the block
layer, besides a few uses in the ioctl code, none
of which need to serialize with blkdev_{get,put}.

Most of these two functions is also under the protection
of bdev->bd_mutex, including the actual calls to
->open and ->release, and the common code does not
access any global data structures that need the BKL.

Signed-off-by: Arnd Bergmann 
Acked-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: remove q->prepare_flush_fn completely

2010-08-07T16:24:15+00:00

This removes q->prepare_flush_fn completely (changes the
blk_queue_ordered API).

Signed-off-by: FUJITA Tomonori 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

[S390] add missing device put

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

The dasd_alias_show function does not return a device reference
in case the device is an alias.

Signed-off-by: Stefan Haberland 
Signed-off-by: Martin Schwidefsky

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

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

React on unit checks during cio internal I/O.
Handle as unsolicited interrupt and advice cio to retry.

Signed-off-by: Stefan Haberland 
Signed-off-by: Martin Schwidefsky