From: mchristi@redhat.com
To: linux-fsdevel@vger.kernel.org, dm-devel@redhat.com,
linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, drbd-dev@lists.linbit.com
Cc: Mike Christie <mchristi@redhat.com>
Subject: [PATCH 24/32] dm: pass dm stats data dir instead of bi_rw
Date: Wed, 4 Nov 2015 16:08:21 -0600 [thread overview]
Message-ID: <1446674909-5371-25-git-send-email-mchristi@redhat.com> (raw)
In-Reply-To: <1446674909-5371-1-git-send-email-mchristi@redhat.com>
From: Mike Christie <mchristi@redhat.com>
It looks like dm stats primarily cares about the data direction
(READ vs WRITE) and does not need the bio/request flags
and in the future operation value. REQ_DISCARD is always set with
REQ_WRITE, so the check for either one in dm_stats_account_io
is not needed.
This patch has it use the bio and request data_dir helpers
instead of accessing the bi_rw/cmd_flags directly. This makes
the next patches that remove the operation from the cmd_flags
and bi_rw cleaner since we do not have to check for multiple
operations.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/dm-stats.c | 6 +++---
drivers/md/dm.c | 8 ++++----
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
index 8289804..96b5c1b 100644
--- a/drivers/md/dm-stats.c
+++ b/drivers/md/dm-stats.c
@@ -518,7 +518,7 @@ static void dm_stat_for_entry(struct dm_stat *s, size_t entry,
struct dm_stats_aux *stats_aux, bool end,
unsigned long duration_jiffies)
{
- unsigned long idx = bi_rw & REQ_WRITE;
+ unsigned long idx = bi_rw;
struct dm_stat_shared *shared = &s->stat_shared[entry];
struct dm_stat_percpu *p;
@@ -645,8 +645,8 @@ void dm_stats_account_io(struct dm_stats *stats, unsigned long bi_rw,
last = raw_cpu_ptr(stats->last);
stats_aux->merged =
(bi_sector == (ACCESS_ONCE(last->last_sector) &&
- ((bi_rw & (REQ_WRITE | REQ_DISCARD)) ==
- (ACCESS_ONCE(last->last_rw) & (REQ_WRITE | REQ_DISCARD)))
+ ((bi_rw == WRITE) ==
+ (ACCESS_ONCE(last->last_rw) == WRITE))
));
ACCESS_ONCE(last->last_sector) = end_sector;
ACCESS_ONCE(last->last_rw) = bi_rw;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index d2cf6d9..ea4bc70 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -655,7 +655,7 @@ static void start_io_acct(struct dm_io *io)
atomic_inc_return(&md->pending[rw]));
if (unlikely(dm_stats_used(&md->stats)))
- dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector,
+ dm_stats_account_io(&md->stats, bio_data_dir(bio), bio->bi_iter.bi_sector,
bio_sectors(bio), false, 0, &io->stats_aux);
}
@@ -670,7 +670,7 @@ static void end_io_acct(struct dm_io *io)
generic_end_io_acct(rw, &dm_disk(md)->part0, io->start_time);
if (unlikely(dm_stats_used(&md->stats)))
- dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector,
+ dm_stats_account_io(&md->stats, bio_data_dir(bio), bio->bi_iter.bi_sector,
bio_sectors(bio), true, duration, &io->stats_aux);
/*
@@ -1053,7 +1053,7 @@ static void rq_end_stats(struct mapped_device *md, struct request *orig)
if (unlikely(dm_stats_used(&md->stats))) {
struct dm_rq_target_io *tio = tio_from_request(orig);
tio->duration_jiffies = jiffies - tio->duration_jiffies;
- dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig),
+ dm_stats_account_io(&md->stats, rq_data_dir(orig), blk_rq_pos(orig),
tio->n_sectors, true, tio->duration_jiffies,
&tio->stats_aux);
}
@@ -1988,7 +1988,7 @@ static void dm_start_request(struct mapped_device *md, struct request *orig)
struct dm_rq_target_io *tio = tio_from_request(orig);
tio->duration_jiffies = jiffies;
tio->n_sectors = blk_rq_sectors(orig);
- dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig),
+ dm_stats_account_io(&md->stats, rq_data_dir(orig), blk_rq_pos(orig),
tio->n_sectors, false, 0, &tio->stats_aux);
}
--
1.8.3.1
next prev parent reply other threads:[~2015-11-04 22:15 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-04 22:07 [RESEND RFC PATCH 00/32] separate operations from flags in the bio/request structs mchristi
2015-11-04 22:07 ` [PATCH 01/32] block/fs: add REQ_OP definitions mchristi
2015-11-04 22:07 ` [PATCH 02/32] block/fs/mm: prepare submit_bio_wait users for bi_rw split mchristi
2015-11-04 22:08 ` [PATCH 03/32] dio/btrfs: prep dio->submit_bio " mchristi
2015-11-04 22:08 ` [PATCH 04/32] block: prepare blkdev_issue_discard " mchristi
2015-11-04 22:08 ` [PATCH 05/32] drbd: prepare drbd " mchristi
2015-11-04 22:08 ` [PATCH 06/32] xen blkback: prepare " mchristi
2015-11-04 22:08 ` [PATCH 07/32] dm: " mchristi
2015-11-04 22:08 ` [PATCH 08/32] target: " mchristi
2015-11-04 22:08 ` [PATCH 09/32] btrfs: " mchristi
2015-11-04 22:08 ` [PATCH 10/32] f2fs: " mchristi
2015-11-04 22:08 ` [PATCH 11/32] gfs2: " mchristi
2015-11-04 22:08 ` [PATCH 12/32] xfs: " mchristi
2015-11-04 22:08 ` [PATCH 13/32] mm: " mchristi
2015-11-04 22:08 ` [PATCH 14/32] block/fs/mm: pass in op and flags to submit_bio mchristi
2015-11-04 22:08 ` [PATCH 15/32] btrfs: prepare for bi_rw split mchristi
2015-11-04 22:08 ` [PATCH 16/32] block/fs/md: pass in op and flags to submit_bh mchristi
2015-11-04 22:08 ` [PATCH 17/32] block: add operation field to bio struct mchristi
2015-11-04 22:08 ` [PATCH 18/32] drbd: set bio bi_op to REQ_OP mchristi
2015-11-04 22:08 ` [PATCH 19/32] block: add helper to get data dir from op mchristi
2015-11-04 22:44 ` [dm-devel] " Bart Van Assche
2015-11-05 17:34 ` Mike Christie
2015-11-07 10:19 ` Christoph Hellwig
2015-11-04 22:08 ` [PATCH 20/32] md: set bi_op to REQ_OP mchristi
2015-11-04 22:08 ` [PATCH 21/32] bcache: " mchristi
2015-11-04 22:08 ` [PATCH 22/32] block/fs/drivers: " mchristi
2015-11-04 22:08 ` [PATCH 23/32] block/fs: pass in op and flags to ll_rw_block mchristi
2015-11-04 22:08 ` mchristi [this message]
2015-11-04 22:08 ` [PATCH 25/32] block: add operation field to request struct mchristi
2015-11-04 22:08 ` [PATCH 26/32] ide cd: do not set REQ_WRITE on requests mchristi
2015-11-04 22:08 ` [PATCH 27/32] cfq/cgroup: pass operation and flags seperately mchristi
2015-11-04 22:08 ` [PATCH 28/32] block/fs/drivers: use bio/rq_data_dir helpers mchristi
2015-11-04 22:08 ` [PATCH 29/32] block/drivers: rm request cmd_flags REQ_OP use mchristi
2015-11-04 22:08 ` [PATCH 30/32] drbd: don't use bi_rw for operations mchristi
2015-11-04 22:08 ` [PATCH 31/32] block/fs/driver: rm bio bi_rw REQ_OP use mchristi
2015-11-04 22:08 ` [PATCH 32/32] block: remove __REQ op defs and reduce bi_op/bi_rw sizes mchristi
2015-11-07 10:21 ` Christoph Hellwig
2015-11-05 16:44 ` [RESEND RFC PATCH 00/32] separate operations from flags in the bio/request structs Bob Peterson
2015-11-07 10:10 ` Christoph Hellwig
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