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authorMichael Callahan <michaelcallahan@fb.com>2018-07-18 14:47:39 +0300
committerJens Axboe <axboe@kernel.dk>2018-07-18 17:44:20 +0300
commitddcf35d397976421a4ec1d0d00fbcc027a8cb034 (patch)
treeebffc9e2971b6c7bc3223a1c584a9c81372a34bc /drivers/lightnvm/pblk-cache.c
parentdbae2c551377b6533a00c11fc7ede370100ab404 (diff)
downloadlinux-ddcf35d397976421a4ec1d0d00fbcc027a8cb034.tar.xz
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/lightnvm/pblk-cache.c')
-rw-r--r--drivers/lightnvm/pblk-cache.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/lightnvm/pblk-cache.c b/drivers/lightnvm/pblk-cache.c
index 77d811962818..f565a56b898a 100644
--- a/drivers/lightnvm/pblk-cache.c
+++ b/drivers/lightnvm/pblk-cache.c
@@ -27,7 +27,8 @@ int pblk_write_to_cache(struct pblk *pblk, struct bio *bio, unsigned long flags)
int nr_entries = pblk_get_secs(bio);
int i, ret;
- generic_start_io_acct(q, WRITE, bio_sectors(bio), &pblk->disk->part0);
+ generic_start_io_acct(q, REQ_OP_WRITE, bio_sectors(bio),
+ &pblk->disk->part0);
/* Update the write buffer head (mem) with the entries that we can
* write. The write in itself cannot fail, so there is no need to
@@ -75,7 +76,7 @@ retry:
pblk_rl_inserted(&pblk->rl, nr_entries);
out:
- generic_end_io_acct(q, WRITE, &pblk->disk->part0, start_time);
+ generic_end_io_acct(q, REQ_OP_WRITE, &pblk->disk->part0, start_time);
pblk_write_should_kick(pblk);
return ret;
}