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| 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/blk.h | |
| parent | 8148f0b5647a831c5d94b59da240c8e76dbacae9 (diff) | |
| download | lwn-48d9b0d43105e0da2b7c135eedd24e51234fb5e4.tar.gz lwn-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/blk.h')
| -rw-r--r-- | block/blk.h | 7 |
1 files changed, 2 insertions, 5 deletions
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) |