Messages in this thread | | | Date | Fri, 17 Feb 2012 14:41:03 -0800 | From | Tejun Heo <> | Subject | Re: [PATCH 7/9] block: implement bio_associate_current() |
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On Fri, Feb 17, 2012 at 05:34:20PM -0500, Vivek Goyal wrote: > Nope. We make note of task migration and drop cic->cfqq association > and establish a new association where new cfqq is part of new cgroup. > (ioc_cgroup_changed()).
Yeah, that's the CHANGED bit thing. I probably got confused with blk-throttle losing blkcg while testing. Anyways, it would be great if we can either remove that altogether. e.g. compare the cached blkg->blkcg and see if it has changed from cfq. Or add a callback and do the shootdown synchronously at least.
Thanks.
-- tejun
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