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author | Ming Lei <ming.lei@canonical.com> | 2015-10-20 23:13:56 +0800 |
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committer | Jens Axboe <axboe@fb.com> | 2015-10-21 15:00:56 -0600 |
commit | 676d06077f964f06af52c19e59f0409a8880612f (patch) | |
tree | 3f7e5c796a014c2384434e92051e85b025de061b /block/blk-mq.c | |
parent | 7460d389c01741f0dfff733af93d3b3abd9b974e (diff) | |
download | linux-676d06077f964f06af52c19e59f0409a8880612f.tar.gz |
blk-mq: fix for trace_block_plug()
The trace point is for tracing plug event of each request queue instead of each task, so we should check the request count in the plug list from current queue instead of current task. Signed-off-by: Ming Lei <ming.lei@canonical.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
-rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index d38371160019..24c528f182ea 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1380,7 +1380,7 @@ static void blk_sq_make_request(struct request_queue *q, struct bio *bio) plug = current->plug; if (plug) { blk_mq_bio_to_request(rq, bio); - if (list_empty(&plug->mq_list)) + if (!request_count) trace_block_plug(q); else if (request_count >= BLK_MAX_REQUEST_COUNT) { blk_flush_plug_list(plug, false); |