UBI: Add support for scatter gather and blk-mq

[Richard Weinberger]

Am 14.12.2014 um 13:43 schrieb Ezequiel Garcia:
> Hey Richard,
> 
> On 11/24/2014 01:04 PM, Richard Weinberger wrote:
>> This two patches implement blk-mq support for the UBI block driver.
>> As the scatter gather part is rather generic I've moved it directl
>> into UBI such that it can be reused later.
>> So far only reading data into a scatter gather list is possible.
>> After implementing  ubi_eba_read_leb_sg() we could slowly start
>> removing a bunch of vmalloc() from the UBI core code and use scatter gather.
>> This should lower the memory footprint of UBI.
>>
>> [PATCH 1/2] UBI: Add initial support for scatter gather
>> [PATCH 2/2] UBI: Block: Add blk-mq support
>>
> 
> Tried to apply these to take a look and run some tests, but 2/2 got
> rejected. Which tag did you base them?
> 

As discussed on IRC, blk-mq saw an update in -next.
The interface as changed bit, I've adopted my patches and pushed them to:
git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc.git ubiblock-mq
This tree is linux-ubifs.git plus linux-block.git for-next.

I'll resend this updated patches after the merge window has closed.
Happy testing. :-)

Thanks,
//richard