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| author | Christoph Hellwig <hch@lst.de> | 2020-06-11 09:44:48 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-06-24 18:15:57 +0300 |
| commit | 4c8fc19686dc761f600833fc9b8fa390eaf73dd5 (patch) | |
| tree | d9841a5a10d369826cceb31ee13a322d16bfa1c4 | |
| parent | 15f73f5b3e5958f2d169fe13c420eeeeae07bbf2 (diff) | |
| download | linux-4c8fc19686dc761f600833fc9b8fa390eaf73dd5.tar.xz | |
blk-mq: remove the get_cpu/put_cpu pair in blk_mq_complete_request
We don't really care if we get migrated during the I/O completion.
In the worth case we either perform an IPI that wasn't required, or
complete the request on a CPU which we just migrated off.
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-mq.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 3f4f227cf830..95125bfe779b 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -685,7 +685,7 @@ void blk_mq_complete_request(struct request *rq) return; } - cpu = get_cpu(); + cpu = raw_smp_processor_id(); if (!test_bit(QUEUE_FLAG_SAME_FORCE, &q->queue_flags)) shared = cpus_share_cache(cpu, ctx->cpu); @@ -697,7 +697,6 @@ void blk_mq_complete_request(struct request *rq) } else { __blk_mq_complete_request(rq); } - put_cpu(); } EXPORT_SYMBOL(blk_mq_complete_request); |