linux-toradex.git/block, branch v2.6.31.3

block: don't assume device has a request list backing in nr_requests store

2009-09-24T15:43:57+00:00

commit b8a9ae779f2c7049071034661e09cb7e1e82250c upstream.

Stacked devices do not. For now, just error out with -EINVAL. Later
we could make the limit apply on stacked devices too, for throttling
reasons.

This fixes

5a54cd13353bb3b88887604e2c980aa01e314309

and should go into 2.6.31 stable as well.

Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

block: Allow changing max_sectors_kb above the default 512

2009-09-01T20:40:15+00:00

The patch "block: Use accessor functions for queue limits"
(ae03bf639a5027d27270123f5f6e3ee6a412781d) changed queue_max_sectors_store()
to use blk_queue_max_sectors() instead of directly assigning the value.

But blk_queue_max_sectors() differs a bit
1. It sets both max_sectors_kb, and max_hw_sectors_kb
2. Never allows one to change max_sectors_kb above BLK_DEF_MAX_SECTORS. If one
specifies a value greater then max_hw_sectors is set to that value but
max_sectors is set to BLK_DEF_MAX_SECTORS

I am not sure whether blk_queue_max_sectors() should be changed, as it seems
to be that way for a long time. And there may be callers dependent on that
behaviour.

This patch simply reverts to the older way of directly assigning the value to
max_sectors as it was before.

Signed-off-by: Nikanth Karthikesan 
Signed-off-by: Jens Axboe

Make SCSI SG v4 driver enabled by default and remove EXPERIMENTAL dependency, since udev depends on BSG

2009-08-04T20:10:17+00:00

Make Block Layer SG support v4 the default, since recent udev versions
depend on this to access serial numbers and other low level info properly.

This should be backported to older kernels as well, since most distros have
enabled this for a long time.

Signed-off-by: John Stoffel 
Cc: stable@kernel.org
Signed-off-by: Jens Axboe

block: Update topology documentation

2009-08-01T08:24:35+00:00

Update topology comments and sysfs documentation based upon discussions
with Neil Brown.

Signed-off-by: Martin K. Petersen 
Signed-off-by: Jens Axboe

block: Stack optimal I/O size

2009-08-01T08:24:35+00:00

When stacking block devices ensure that optimal I/O size is scaled
accordingly.

Signed-off-by: Martin K. Petersen 
Reviewed-by: Mike Snitzer 
Signed-off-by: Jens Axboe

block: Add a wrapper for setting minimum request size without a queue

2009-08-01T08:24:35+00:00

Introduce blk_limits_io_min() and make blk_queue_io_min() call it.

Signed-off-by: Mike Snitzer 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Jens Axboe

block: Make blk_queue_stack_limits use the new stacking interface

2009-08-01T08:24:35+00:00

blk_queue_stack_limits() has been superceded by blk_stack_limits() and
disk_stack_limits().  Wrap the function call for now, we'll deprecate it
later.

Signed-off-by: Martin K. Petersen 
Signed-off-by: Jens Axboe

block: make the end_io functions be non-GPL exports

2009-07-28T20:11:24+00:00

Prior to the change for more sane end_io functions, we exported
the helpers with the normal EXPORT_SYMBOL(). That got changed
to _GPL() for the new interface. Revert that particular change,
on the basis that this is basic functionality and doesn't dip
into internal structures. If these exports can't be non-GPL,
then we may as well make EXPORT_SYMBOL() imply GPL for
everything.

Signed-off-by: Jens Axboe

block: fix improper kobject release in blk_integrity_unregister

2009-07-28T07:11:14+00:00

blk_integrity_unregister should use kobject_put to release the kobject,
otherwise after bi is freed, memory of bi->kobj->name is leaked.

Signed-off-by: Xiaotian Feng 
Signed-off-by: Jens Axboe

block: always assign default lock to queues

2009-07-28T07:07:29+00:00

Move the assignment of a default lock below blk_init_queue() to
blk_queue_make_request(), so we also get to set the default lock
for ->make_request_fn() based drivers. This is important since the
queue flag locking requires a lock to be in place.

Signed-off-by: Jens Axboe