Re: [PATCHv2 00/16] [FS, MM, block, MMC]: eMMC High Priority Interrupt Feature

[mani <manishrma@xxxxxxxxx>]

Dear Kim, 

I have a query here ..

My point is that it would be better for read to not preempt write-for-page_reclaim.
And we can identify it by PG_reclaim. You can get the idea.

I think If there is no page available then no read will proceed. 
When read request comes it reclaim the pages (starts the write if syncable pages ) and get back after reclaiming the pages. 

Only then a read request will come to the MMC subsystem. 
And i think the reclaim algorithm will reclaim some substantial amount of pages at a time instead of a single page. 
So if we get few pages during the reclamation so there will be no problem in halting the another write ops for proceeding the reads ? 

Can we think of a scenario when we are reclaiming the pages and write ops is going on where as a high priority read for the interrupt handler is pending ?

Please correct me if i am wrong.

Thanks & Regards

Manish