blktrace: just ignore zero byte traces
authorJens Axboe <axboe@kernel.dk>
Wed, 4 Jul 2018 20:59:18 +0000 (14:59 -0600)
committerJens Axboe <axboe@kernel.dk>
Wed, 4 Jul 2018 20:59:18 +0000 (14:59 -0600)
commit19a8064ef4a2a826ee06ed061af970d1737cf840
treed6564a6bd46b661abc99edca103257dcd86f547d
parent354d50e771451f510e5886275768abb63b602798
blktrace: just ignore zero byte traces

Apparently they do happen. Log a warning (once) and just discard
them.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
blktrace.c
debug.h