On 06/05/2018 08:01 PM, Tejun Heo wrote:
From: Michael Callahan <michaelcallahan@xxxxxx>
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@xxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Joshua Morris <josh.h.morris@xxxxxxxxxx>
Cc: Philipp Reisner <philipp.reisner@xxxxxxxxxx>
Cc: Matias Bjorling <mb@xxxxxxxxxxx>
Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
---
block/bio.c | 16 +++++++++-------
block/blk-core.c | 12 ++++++------
drivers/block/drbd/drbd_req.c | 4 ++--
drivers/block/rsxx/dev.c | 6 +++---
drivers/block/zram/zram_drv.c | 5 ++---
drivers/lightnvm/pblk-cache.c | 5 +++--
drivers/lightnvm/pblk-read.c | 5 +++--
drivers/md/bcache/request.c | 13 +++++--------
drivers/md/dm.c | 6 ++++--
drivers/md/md.c | 5 +++--
drivers/nvdimm/nd.h | 7 +++----
include/linux/bio.h | 4 ++--
include/linux/blk_types.h | 5 +++++
13 files changed, 50 insertions(+), 43 deletions(-)
diff --git a/block/bio.c b/block/bio.c
....
diff --git a/drivers/lightnvm/pblk-cache.c b/drivers/lightnvm/pblk-cache.c
index b1c6d7e..643e276 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 @@ int pblk_write_to_cache(struct pblk *pblk, struct bio *bio, unsigned long flags)
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;
}
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 1869469..cf90cee 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -199,7 +199,7 @@ static void __pblk_end_io_read(struct pblk *pblk, struct nvm_rq *rqd,
struct bio *int_bio = rqd->bio;
unsigned long start_time = r_ctx->start_time;
- generic_end_io_acct(dev->q, READ, &pblk->disk->part0, start_time);
+ generic_end_io_acct(dev->q, REQ_OP_READ, &pblk->disk->part0, start_time);
if (rqd->error)
pblk_log_read_err(pblk, rqd);
@@ -411,7 +411,8 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
return NVM_IO_ERR;
}
- generic_start_io_acct(q, READ, bio_sectors(bio), &pblk->disk->part0);
+ generic_start_io_acct(q, REQ_OP_READ, bio_sectors(bio),
+ &pblk->disk->part0);
bitmap_zero(&read_bitmap, nr_secs);
Looks good to me. Thanks.
