linux-toradex.git/drivers/s390/block/dasd.c, branch v3.4.2

[S390] dasd: prevent validate server for offline devices

2012-03-11T15:59:29+00:00

Calling validate server on devices in offline processing may cause
an OOPS in the dasd_sleep_on function.

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

[S390] dasd: revalidate server for new pathgroup

2012-01-18T17:03:42+00:00

If a pathgroup is established we get an event and have to revalidate
the server to propagate supported features like PAV and enable them.

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

Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z

2012-01-07T04:15:54+00:00

switch debugfs to umode_t

2012-01-04T03:54:56+00:00

Signed-off-by: Al Viro

fs: move code out of buffer.c

2012-01-04T03:54:07+00:00

Move invalidate_bdev, block_sync_page into fs/block_dev.c.  Export
kill_bdev as well, so brd doesn't have to open code it.  Reduce
buffer_head.h requirement accordingly.

Removed a rather large comment from invalidate_bdev, as it looked a bit
obsolete to bother moving.  The small comment replacing it says enough.

Signed-off-by: Nick Piggin 
Cc: Al Viro 
Cc: Christoph Hellwig 
Signed-off-by: Andrew Morton 
Signed-off-by: Al Viro

[S390] dasd: prevent path verification before resume

2011-10-30T14:16:45+00:00

Mark the device as suspended and delay execution of the path
verification worker to prevent mix-up.

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

[S390] dasd: re-initialize read_conf buffer for retries

2011-10-30T14:16:44+00:00

The buffer for read configuration data has to be initialized with an
EBCDIC string to show support for extended UIDs to z/VM.
If this read configuration data CQR needs to be retried, the buffer
may have changed in between. So re-initialize the buffer to get a
correct extended UID under z/VM.

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

[S390] dasd: wait for terminated request

2011-10-30T14:16:44+00:00

After terminating a request in the dasd_sleep_on_immediatly function,
wait for the clear interrupt to be received before starting the
new request. This prevents the requests from getting mixed up.

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

[S390] fix mismatch in summation of I/O IRQ statistics

2011-10-30T14:16:15+00:00

Current IRQ statistics support does not show detail counts for I/O
interrupts which are processed internally only. The result is a
summation count which is way off such as this one:

           CPU0       CPU1       CPU2
I/O:       1331        710        442
[...]
QAI:         15         16         16   [I/O] QDIO Adapter Interrupt
QDI:          1          0          0   [I/O] QDIO Interrupt
DAS:        706        645        381   [I/O] DASD
C15:         26         10          0   [I/O] 3215
C70:          0          0          0   [I/O] 3270
TAP:          0          0          0   [I/O] Tape
VMR:          0          0          0   [I/O] Unit Record Devices
LCS:          0          0          0   [I/O] LCS
CLW:          0          0          0   [I/O] CLAW
CTC:          0          0          0   [I/O] CTC
APB:          0          0          0   [I/O] AP Bus

Fix this by moving I/O interrupt accounting into the common I/O layer.

Signed-off-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky

[S390] dasd: use vmalloc for statistics input buffer

2011-08-03T14:44:19+00:00

The size of the buffer that is used to store DASD statistics input
strings depends on the user input. If the input string is to large,
the write operation could fail with -ENOMEM. To avoid this, use
vmalloc instead of kmalloc.

Signed-off-by: Stefan Weinhuber 
Signed-off-by: Heiko Carstens