Messages in this thread | | | From | Jeff Moyer <> | Subject | Re: BLK_MQ_F_DEFER_ISSUE | Date | Mon, 20 Apr 2015 12:04:14 -0400 |
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Jens Axboe <axboe@kernel.dk> writes:
> On 04/20/2015 09:09 AM, Jeff Moyer wrote: >> Hi, Jens, >> >> This flag was introduced under the auspices that the nvme blk-mq >> conversion would make use of it. That never materialized. Are there >> still plans to make use of it? If not, I'd like to get rid of it. If >> so, then let's document it better. > > Yep I still want to use it, and I do have a patch that uses it as well > that I've run through testing. I thought I had pushed it somewhere, > but it doesn't seem like I have. I just wanted to get the lower > hanging optimizations out there first, like the kmalloc/kfree and > queue-lock-for-completions removal. Former is in, latter is not yet. > > It's a useful optimization for lots of cases and I'm sure it'll see > other uses, once the nvme patch is in. That will give people a > reference point.
OK, thanks for the quick reply.
-Jeff
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