linux-toradex.git/drivers/block/aoe, branch v3.7

aoe: avoid running request handler on plugged queue

2012-11-23T13:32:55+00:00

Calling the request handler directly on a plugged queue defeats
the performance improvements provided by the plugging mechanism.
Use the __blk_run_queue function instead of calling the request
handler directly, so that we don't interfere with the block
layer's ability to plug the queue.

Signed-off-by: Ed Cashin 
Signed-off-by: Jens Axboe

aoe: update aoe-internal version number to 50

2012-10-05T18:05:30+00:00

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: remove unused code

2012-10-05T18:05:30+00:00

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: make dynamic block minor numbers the default

2012-10-05T18:05:29+00:00

Because udev use is so widespread, making the old static mapping the
default is too conservative, given the severe limitations it places on
usable AoE addresses.  Storage virtualization and larger shelves have made
the old limitations too confining.

These changes make the dynamic block device minor numbers the default,
removing the limitations on usable AoE addresses.

The static arrangement is still available with aoe_dyndevs=0, and the
aoe-stat tool from the userland aoetools package, the user space
counterpart to the aoe driver, recognizes the case where there is a
mismatch between the minor number in sysfs and the minor number in a
special device file.

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: update and specify AoE address guards and error messages

2012-10-05T18:05:29+00:00

In general, specific is better when it comes to messages about AoE usage
problems.  Also, explicit checks for the AoE broadcast addresses are
added.

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: retain static block device numbers for backwards compatibility

2012-10-05T18:05:29+00:00

The old mapping between AoE target shelf and slot addresses and the block
device minor number is retained as a backwards-compatible feature, with a
new "aoe_dyndevs" module parameter available for enabling dynamic block
device minor numbers.

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: support more AoE addresses with dynamic block device minor numbers

2012-10-05T18:05:28+00:00

The ATA over Ethernet protocol uses a major (shelf) and minor (slot)
address to identify a particular storage target.  These changes remove an
artificial limitation the aoe driver imposes on the use of AoE addresses.
For example, without these changes, the slot address has a maximum of 15,
but users commonly use slot numbers much greater than that.

The AoE shelf and slot address space is often used sparsely.  Instead of
using a static mapping between AoE addresses and the block device minor
number, the block device minor numbers are now allocated on demand.

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: update copyright year in touched files

2012-10-05T18:05:28+00:00

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: update internal version number to 49

2012-10-05T18:05:27+00:00

The internal version number of the aoe driver appears in a console message
when the driver loads and is usually obtained by the user with the
userland aoe-version tool, part of the aoetools.[1]

Although this patchset includes bugfixes backported from higher-numbered
versions published on the coraid.com website, it is a form of version 49.

1. http://aoetools.sourceforge.net/

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aoe: remove unused code and add cosmetic improvements

2012-10-05T18:05:27+00:00

This change removes some unused code and attempts to increase code
consistency.

Signed-off-by: Ed Cashin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds