Re: [RFC][DATA] re "ongoing vm suckage"

[Linus Torvalds]

On Fri, 3 Aug 2001, Ben LaHaise wrote:
>
> No.  Here's the bug in the block layer that was causing the throttling not
> to work.  Leave the logic in, it has good reason -- think of batching of
> io, where you don't want to add just one page at a time.

I absolutely agree on the batching, but this has nothing to do with
batching. The batching code uses "batch_requests", and the fact that we
free the finished requests to another area.

The ll_rw_block() code really _is_ broken. As proven by the fact that it
doesn't even get invoced most of the time.. And the times it _does_ get
invoced is exactly when it shouldn't (guess what the biggest user of
"ll_rw_block()" tends to be? "bread()")

		Linus