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authorJens Axboe <axboe@fb.com>2014-05-30 21:20:50 -0600
committerJens Axboe <axboe@fb.com>2014-05-30 21:20:50 -0600
commited851860b4552fc8963ecf71eab9f6f7a5c19d74 (patch)
treed9fc4edbe2dd1400855705e8407cf0f87d2dc3ea /block
parentfeff6894128e4bb3c903ce247edc5bd3a1b09fc9 (diff)
downloadop-kernel-dev-ed851860b4552fc8963ecf71eab9f6f7a5c19d74.zip
op-kernel-dev-ed851860b4552fc8963ecf71eab9f6f7a5c19d74.tar.gz
blk-mq: push IPI or local end_io decision to __blk_mq_complete_request()
We have callers outside of the blk-mq proper (like timeouts) that want to call __blk_mq_complete_request(), so rename the function and put the decision code for whether to use ->softirq_done_fn or blk_mq_endio() into __blk_mq_complete_request(). This also makes the interface more logical again. blk_mq_complete_request() attempts to atomically mark the request completed, and calls __blk_mq_complete_request() if successful. __blk_mq_complete_request() then just ends the request. Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
-rw-r--r--block/blk-mq.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5443aea..0f5879c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -359,7 +359,7 @@ static void __blk_mq_complete_request_remote(void *data)
rq->q->softirq_done_fn(rq);
}
-void __blk_mq_complete_request(struct request *rq)
+static void blk_mq_ipi_complete_request(struct request *rq)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
bool shared = false;
@@ -385,6 +385,16 @@ void __blk_mq_complete_request(struct request *rq)
put_cpu();
}
+void __blk_mq_complete_request(struct request *rq)
+{
+ struct request_queue *q = rq->q;
+
+ if (!q->softirq_done_fn)
+ blk_mq_end_io(rq, rq->errors);
+ else
+ blk_mq_ipi_complete_request(rq);
+}
+
/**
* blk_mq_complete_request - end I/O on a request
* @rq: the request being processed
@@ -399,12 +409,8 @@ void blk_mq_complete_request(struct request *rq)
if (unlikely(blk_should_fake_timeout(q)))
return;
- if (!blk_mark_rq_complete(rq)) {
- if (q->softirq_done_fn)
- __blk_mq_complete_request(rq);
- else
- blk_mq_end_io(rq, rq->errors);
- }
+ if (!blk_mark_rq_complete(rq))
+ __blk_mq_complete_request(rq);
}
EXPORT_SYMBOL(blk_mq_complete_request);
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