Re: [RFC/PATCH 4/4] block: Add URGENT request notification support to CFQ scheduler

2013-08-04 Thread Konstantin Dorfman
Hello Manish, On 08/03/2013 10:28 PM, mani wrote: > > Yes, the patch does the same but then why to modify the CFQ ? CFQ currently not supports URGENT request notification/reinsert - so you can't use it with urgent data request implementation in mmc layer. > Instead I think u should only move the

Re: [RFC/PATCH 4/4] block: Add URGENT request notification support to CFQ scheduler

2013-07-12 Thread Tanya Brokhman
Hello Jeff Thank you for your comments. Please see inline. On 7/11/2013 9:41 PM, Jeff Moyer wrote: Tanya Brokhman writes: When the scheduler reports to the block layer that there is an urgent request pending, the device driver may decide to stop the transmission of the current request in ord

Re: [RFC/PATCH 4/4] block: Add URGENT request notification support to CFQ scheduler

2013-07-11 Thread Jeff Moyer
Tanya Brokhman writes: > When the scheduler reports to the block layer that there is an urgent > request pending, the device driver may decide to stop the transmission > of the current request in order to handle the urgent one. This is done > in order to reduce the latency of an urgent request. F

Re: [RFC/PATCH 4/4] block: Add URGENT request notification support to CFQ scheduler

2013-07-11 Thread Santosh Y
On Thu, Jul 11, 2013 at 6:31 PM, Tanya Brokhman wrote: > When the scheduler reports to the block layer that there is an urgent > request pending, the device driver may decide to stop the transmission > of the current request in order to handle the urgent one. This is done > in order to reduce the

[RFC/PATCH 4/4] block: Add URGENT request notification support to CFQ scheduler

2013-07-11 Thread Tanya Brokhman
When the scheduler reports to the block layer that there is an urgent request pending, the device driver may decide to stop the transmission of the current request in order to handle the urgent one. This is done in order to reduce the latency of an urgent request. For example: long WRITE may be sto