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authorJianpeng Ma <majianpeng@gmail.com>2013-09-11 13:21:07 -0600
committerJens Axboe <axboe@kernel.dk>2013-09-11 13:21:07 -0600
commit7aef2e780b13973ea60aed8c556107dabde6a495 (patch)
tree5265a24ffeaea32e2cefacf83962764d6d661a36 /block/genhd.c
parent6e4664525b1db28f8c4e1130957f70a94c19213e (diff)
block: trace all devices plug operation
In func blk_queue_bio, if list of plug is empty,it will call blk_trace_plug. If process deal with a single device,it't ok.But if process deal with multi devices,it only trace the first device. Using request_count to judge, it can soleve this problem. In addition, i modify the comment. Signed-off-by: Jianpeng Ma <majianpeng@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
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