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| author | Michael Callahan <michaelcallahan@fb.com> | 2018-07-18 04:47:39 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-07-18 08:44:20 -0600 |
| commit | ddcf35d397976421a4ec1d0d00fbcc027a8cb034 (patch) | |
| tree | ebffc9e2971b6c7bc3223a1c584a9c81372a34bc /drivers/md/md.c | |
| parent | dbae2c551377b6533a00c11fc7ede370100ab404 (diff) | |
| download | linux-ddcf35d397976421a4ec1d0d00fbcc027a8cb034.tar.gz linux-ddcf35d397976421a4ec1d0d00fbcc027a8cb034.tar.bz2 linux-ddcf35d397976421a4ec1d0d00fbcc027a8cb034.zip | |
block: Add and use op_stat_group() for indexing disk_stat fields.
Add and use a new op_stat_group() function for indexing partition stat
fields rather than indexing them by rq_data_dir() or bio_data_dir().
This function works similarly to op_is_sync() in that it takes the
request::cmd_flags or bio::bi_opf flags and determines which stats
should et updated.
In addition, the second parameter to generic_start_io_acct() and
generic_end_io_acct() is now a REQ_OP rather than simply a read or
write bit and it uses op_stat_group() on the parameter to determine
the stat group.
Note that the partition in_flight counts are not part of the per-cpu
statistics and as such are not indexed via this function. It's now
indexed by op_is_write().
tj: Refreshed on top of v4.17. Updated to pass around REQ_OP.
Signed-off-by: Michael Callahan <michaelcallahan@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Joshua Morris <josh.h.morris@us.ibm.com>
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Matias Bjorling <mb@lightnvm.io>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Alasdair Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index dabe36723d60..f6e58dbca0d4 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -335,6 +335,7 @@ EXPORT_SYMBOL(md_handle_request); static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio) { const int rw = bio_data_dir(bio); + const int sgrp = op_stat_group(bio_op(bio)); struct mddev *mddev = q->queuedata; unsigned int sectors; int cpu; @@ -363,8 +364,8 @@ static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio) md_handle_request(mddev, bio); cpu = part_stat_lock(); - part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]); - part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw], sectors); + part_stat_inc(cpu, &mddev->gendisk->part0, ios[sgrp]); + part_stat_add(cpu, &mddev->gendisk->part0, sectors[sgrp], sectors); part_stat_unlock(); return BLK_QC_T_NONE; |