From ddcf35d397976421a4ec1d0d00fbcc027a8cb034 Mon Sep 17 00:00:00 2001 From: Michael Callahan Date: Wed, 18 Jul 2018 04:47:39 -0700 Subject: 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 Signed-off-by: Tejun Heo Cc: Minchan Kim Cc: Dan Williams Cc: Joshua Morris Cc: Philipp Reisner Cc: Matias Bjorling Cc: Kent Overstreet Cc: Alasdair Kergon Signed-off-by: Jens Axboe --- drivers/block/drbd/drbd_req.c | 4 ++-- drivers/block/rsxx/dev.c | 6 +++--- drivers/block/zram/zram_drv.c | 5 ++--- 3 files changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index d146fedc38bb..19cac36e9737 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -38,7 +38,7 @@ static void _drbd_start_io_acct(struct drbd_device *device, struct drbd_request { struct request_queue *q = device->rq_queue; - generic_start_io_acct(q, bio_data_dir(req->master_bio), + generic_start_io_acct(q, bio_op(req->master_bio), req->i.size >> 9, &device->vdisk->part0); } @@ -47,7 +47,7 @@ static void _drbd_end_io_acct(struct drbd_device *device, struct drbd_request *r { struct request_queue *q = device->rq_queue; - generic_end_io_acct(q, bio_data_dir(req->master_bio), + generic_end_io_acct(q, bio_op(req->master_bio), &device->vdisk->part0, req->start_jif); } diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c index dddb3f2490b6..1a92f9e65937 100644 --- a/drivers/block/rsxx/dev.c +++ b/drivers/block/rsxx/dev.c @@ -112,7 +112,7 @@ static const struct block_device_operations rsxx_fops = { static void disk_stats_start(struct rsxx_cardinfo *card, struct bio *bio) { - generic_start_io_acct(card->queue, bio_data_dir(bio), bio_sectors(bio), + generic_start_io_acct(card->queue, bio_op(bio), bio_sectors(bio), &card->gendisk->part0); } @@ -120,8 +120,8 @@ static void disk_stats_complete(struct rsxx_cardinfo *card, struct bio *bio, unsigned long start_time) { - generic_end_io_acct(card->queue, bio_data_dir(bio), - &card->gendisk->part0, start_time); + generic_end_io_acct(card->queue, bio_op(bio), + &card->gendisk->part0, start_time); } static void bio_dma_done_cb(struct rsxx_cardinfo *card, diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 78c29044684a..2907a8156aaf 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1277,11 +1277,10 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index, int offset, unsigned int op, struct bio *bio) { unsigned long start_time = jiffies; - int rw_acct = op_is_write(op) ? REQ_OP_WRITE : REQ_OP_READ; struct request_queue *q = zram->disk->queue; int ret; - generic_start_io_acct(q, rw_acct, bvec->bv_len >> SECTOR_SHIFT, + generic_start_io_acct(q, op, bvec->bv_len >> SECTOR_SHIFT, &zram->disk->part0); if (!op_is_write(op)) { @@ -1293,7 +1292,7 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index, ret = zram_bvec_write(zram, bvec, index, offset, bio); } - generic_end_io_acct(q, rw_acct, &zram->disk->part0, start_time); + generic_end_io_acct(q, op, &zram->disk->part0, start_time); zram_slot_lock(zram, index); zram_accessed(zram, index); -- cgit v1.2.3