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authorMichael Callahan <michaelcallahan@fb.com>2018-07-18 04:47:39 -0700
committerJens Axboe <axboe@kernel.dk>2018-07-18 08:44:20 -0600
commitddcf35d397976421a4ec1d0d00fbcc027a8cb034 (patch)
treeebffc9e2971b6c7bc3223a1c584a9c81372a34bc /drivers/md/dm.c
parentdbae2c551377b6533a00c11fc7ede370100ab404 (diff)
downloadlinux-ddcf35d397976421a4ec1d0d00fbcc027a8cb034.tar.bz2
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/dm.c')
-rw-r--r--drivers/md/dm.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index b0dd7027848b..20f7e4ef5342 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -609,7 +609,8 @@ static void start_io_acct(struct dm_io *io)
io->start_time = jiffies;
- generic_start_io_acct(md->queue, rw, bio_sectors(bio), &dm_disk(md)->part0);
+ generic_start_io_acct(md->queue, bio_op(bio), bio_sectors(bio),
+ &dm_disk(md)->part0);
atomic_set(&dm_disk(md)->part0.in_flight[rw],
atomic_inc_return(&md->pending[rw]));
@@ -628,7 +629,8 @@ static void end_io_acct(struct dm_io *io)
int pending;
int rw = bio_data_dir(bio);
- generic_end_io_acct(md->queue, rw, &dm_disk(md)->part0, io->start_time);
+ generic_end_io_acct(md->queue, bio_op(bio), &dm_disk(md)->part0,
+ io->start_time);
if (unlikely(dm_stats_used(&md->stats)))
dm_stats_account_io(&md->stats, bio_data_dir(bio),