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author | Tao Ma <boyu.mt@taobao.com> | 2011-08-05 09:37:10 +0200 |
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committer | Jens Axboe <jaxboe@fusionio.com> | 2011-08-05 09:37:47 +0200 |
commit | 35ae66e0a09ab70ed588e65f26b4c725cd1656b6 (patch) | |
tree | 10f866f13a32109f7fa23ab8ab392fab759c9f6d /Documentation/block | |
parent | f41c53a569c4cf0556893ec9cfcf697d069799e1 (diff) | |
download | linux-stable-35ae66e0a09ab70ed588e65f26b4c725cd1656b6.tar.gz linux-stable-35ae66e0a09ab70ed588e65f26b4c725cd1656b6.tar.bz2 linux-stable-35ae66e0a09ab70ed588e65f26b4c725cd1656b6.zip |
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>
Diffstat (limited to 'Documentation/block')
0 files changed, 0 insertions, 0 deletions