diff options
| author |   Logan Gunthorpe <logang@deltatee.com> | 2019-10-10 17:36:26 -0600 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-10-10 17:52:31 -0600 |
| commit | 48d9b0d43105e0da2b7c135eedd24e51234fb5e4 (patch) | |
| tree | 66eb670f7ef6dfe762e969f8b2992aced40194a0 /block | |
| parent | blk-stat: Optimise blk_stat_add() (diff) | |
| download | linux-dev-48d9b0d43105e0da2b7c135eedd24e51234fb5e4.tar.xz linux-dev-48d9b0d43105e0da2b7c135eedd24e51234fb5e4.zip | |
block: account statistics for passthrough requests
Presently, passthrough requests are not accounted for because
blk_do_io_stat() expressly rejects them. Based on some digging
in the history, this doesn't seem like a concious decision but
one that evolved from the change from blk_fs_request() to
blk_rq_is_passthrough().
To support this, call blk_account_io_start() in blk_execute_rq_nowait()
and remove the passthrough check in blk_do_io_stat().
Link: https://lore.kernel.org/linux-block/20191010100526.GA27209@lst.de/
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-exec.c | 2 | ||||
| -rw-r--r-- | block/blk.h | 7 |
2 files changed, 4 insertions, 5 deletions
diff --git a/block/blk-exec.c b/block/blk-exec.c index 1db44ca0f4a6..e20a852ae432 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -55,6 +55,8 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, rq->rq_disk = bd_disk; rq->end_io = done; + blk_account_io_start(rq, true); + /* * don't check dying flag for MQ because the request won't * be reused after dying flag is set diff --git a/block/blk.h b/block/blk.h index 47fba9362e60..2bea40180b6f 100644 --- a/block/blk.h +++ b/block/blk.h @@ -242,14 +242,11 @@ int blk_dev_init(void); * Contribute to IO statistics IFF: * * a) it's attached to a gendisk, and - * b) the queue had IO stats enabled when this request was started, and - * c) it's a file system request + * b) the queue had IO stats enabled when this request was started */ static inline bool blk_do_io_stat(struct request *rq) { - return rq->rq_disk && - (rq->rq_flags & RQF_IO_STAT) && - !blk_rq_is_passthrough(rq); + return rq->rq_disk && (rq->rq_flags & RQF_IO_STAT); } static inline void req_set_nomerge(struct request_queue *q, struct request *req) |