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