block: misplaced rq_complete tracepoint

The rq_complete tracepoint was never issued for empty requests,
causing the resulting blktrace information to never show any
completion for those request.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/block/blk-core.c b/block/blk-core.c
index e1c2775..4aa9ccd 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2400,11 +2400,11 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
 {
        int total_bytes;
 
+       trace_block_rq_complete(req->q, req, nr_bytes);
+
        if (!req->bio)
                return false;
 
-       trace_block_rq_complete(req->q, req, nr_bytes);
-
        /*
         * For fs requests, rq is just carrier of independent bio's
         * and each partial completion should be handled separately.