diff options
| author | Tejun Heo <tj@kernel.org> | 2008-08-25 14:56:14 +0400 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 10:56:08 +0400 |
| commit | 074a7aca7afa6f230104e8e65eba3420263714a5 (patch) | |
| tree | f418313e45bd55be8156c8a3e8f9a216cf63058d /block/blk-merge.c | |
| parent | eddb2e26b5ee3c5da68ba4bf1921ba20e2097bff (diff) | |
| download | linux-074a7aca7afa6f230104e8e65eba3420263714a5.tar.xz | |
block: move stats from disk to part0
Move stats related fields - stamp, in_flight, dkstats - from disk to
part0 and unify stat handling such that...
* part_stat_*() now updates part0 together if the specified partition
is not part0. ie. part_stat_*() are now essentially all_stat_*().
* {disk|all}_stat_*() are gone.
* part_round_stats() is updated similary. It handles part0 stats
automatically and disk_round_stats() is killed.
* part_{inc|dec}_in_fligh() is implemented which automatically updates
part0 stats for parts other than part0.
* disk_map_sector_rcu() is updated to return part0 if no part matches.
Combined with the above changes, this makes NULL special case
handling in callers unnecessary.
* Separate stats show code paths for disk are collapsed into part
stats show code paths.
* Rename disk_stat_lock/unlock() to part_stat_lock/unlock()
While at it, reposition stat handling macros a bit and add missing
parentheses around macro parameters.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index d926a24bf1fd..c77196d55899 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -390,17 +390,13 @@ static int attempt_merge(struct request_queue *q, struct request *req, struct hd_struct *part; int cpu; - cpu = disk_stat_lock(); + cpu = part_stat_lock(); part = disk_map_sector_rcu(req->rq_disk, req->sector); - disk_round_stats(cpu, req->rq_disk); - req->rq_disk->in_flight--; - if (part) { - part_round_stats(cpu, part); - part->in_flight--; - } + part_round_stats(cpu, part); + part_dec_in_flight(part); - disk_stat_unlock(); + part_stat_unlock(); } req->ioprio = ioprio_best(req->ioprio, next->ioprio); |