Re: [PATCH 1/2] Don't merge different partition's IOs

From: Satoru Takeuchi
Date: Wed Dec 08 2010 - 03:00:13 EST


Hi Jens,

(2010/12/08 16:33), Jens Axboe wrote:
On 2010-12-07 15:18, Satoru Takeuchi wrote:

I hit on another approach. Although it doesn'tprevent any merge as Linus
preferred, it can fix the problem anyway. In this idea, in_flight is
incremented and decremented for the partition which the request belonged
to in its creation. It has the following merits.

Revert is already finished. 2.6.37-rc-5 and latest stable kernel doesn't
contain Yasuaki's former logic.

https://lkml.org/lkml/2010/10/24/118


I really would prefer if we fixed up the patchset we ended up reverting.
At least that had a purpose with growing struct request, since we saved
on doing the partition lookups.


Thanks,
Satoru

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/