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authorTao Ma <boyu.mt@taobao.com>2011-08-05 07:37:10 (GMT)
committerJens Axboe <jaxboe@fusionio.com>2011-08-05 07:37:47 (GMT)
commit35ae66e0a09ab70ed588e65f26b4c725cd1656b6 (patch)
tree10f866f13a32109f7fa23ab8ab392fab759c9f6d /MAINTAINERS
parentf41c53a569c4cf0556893ec9cfcf697d069799e1 (diff)
downloadlinux-35ae66e0a09ab70ed588e65f26b4c725cd1656b6.tar.xz
block: Make rq_affinity = 1 work as expected
Commit 5757a6d76c introduced a new rq_affinity = 2 so as to make the request completed in the __make_request cpu. But it makes the old rq_affinity = 1 not work any more. The root cause is that if the 'cpu' and 'req->cpu' is in the same group and cpu != req->cpu, ccpu will be the same as group_cpu, so the completion will be excuted in the 'cpu' not 'group_cpu'. This patch fix problem by simpling removing group_cpu and the codes are more explicit now. If ccpu == cpu, we complete in cpu, otherwise we raise_blk_irq to ccpu. Cc: Christoph Hellwig <hch@infradead.org> Cc: Roland Dreier <roland@purestorage.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jens Axboe <jaxboe@fusionio.com> Signed-off-by: Tao Ma <boyu.mt@taobao.com> Reviewed-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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