Re: ll_rw_blk.c fails to merge requests. Help!

From: Jens Axboe (
Date: Thu Aug 24 2000 - 15:47:32 EST

On Thu, Aug 24 2000, Linus Torvalds wrote:
> > Heh, but it's not that simple. The requests that are currently on
> > the pending list, are not necessarily added to the same freelist. So
> > we have to scan the pending list, and look at each request individually.
> Why not just have a pending list for each free list, no?

Thinking a bit more about it, we really don't need the two lists to
be able to use list_splice. Write batching need only focus on the
write freelist since reads also fall back to stealing requsts from that

New patch coming up.

* Jens Axboe <>
* SuSE Labs
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