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.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
block/blk-mq.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index b73b193809097b..45294cd5d875cc 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);
--
2.26.2
