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| author |  Ming Lei <ming.lei@redhat.com>
| 2021-05-11 23:22:33 +0800 |
|---|---|---|
| committer |  Jens Axboe <axboe@kernel.dk>
| 2021-05-24 06:47:21 -0600 |
| commit | 84da7acc3ba53af26f15c4b0ada446127b7a7836 (patch) | |
| tree | b9b3f6491319d187f8a66f5fcaff30d6941c818a /block/blk-mq.h | |
| parent | block: remove unneeded parenthesis from blk-sysfs (diff) | |
| download | linux-84da7acc3ba53af26f15c4b0ada446127b7a7836.tar.gz linux-84da7acc3ba53af26f15c4b0ada446127b7a7836.tar.bz2 linux-84da7acc3ba53af26f15c4b0ada446127b7a7836.zip | |
block: avoid double io accounting for flush request
For flush request, rq->end_io() may be called two times, one is from
timeout handling(blk_mq_check_expired()), another is from normal
completion(__blk_mq_end_request()).
Move blk_account_io_flush() after flush_rq->ref drops to zero, so
io accounting can be done just once for flush request.
Fixes: b68663186577 ("block: add iostat counters for flush requests")
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20210511152236.763464-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.h')
0 files changed, 0 insertions, 0 deletions