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| author | Tejun Heo <tj@kernel.org> | 2008-08-25 19:47:17 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:04 +0200 |
| commit | 310a2c1012934f590192377f65940cad4aa72b15 (patch) | |
| tree | ed30346abf07c5a7e94719f567368d5642af1f95 /block | |
| parent | 88e341261ca4d39eec21b212961c77eff51105f7 (diff) | |
| download | linux-stable-310a2c1012934f590192377f65940cad4aa72b15.tar.gz linux-stable-310a2c1012934f590192377f65940cad4aa72b15.tar.bz2 linux-stable-310a2c1012934f590192377f65940cad4aa72b15.zip | |
block: misc updates
This patch makes the following misc updates in preparation for
disk->part dereference fix and extended block devt support.
* implment part_to_disk()
* fix comment about gendisk->part indexing
* rename get_part() to disk_map_sector()
* don't use n which is always zero while printing disk information in
diskstats_show()
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 7 | ||||
| -rw-r--r-- | block/blk-merge.c | 4 | ||||
| -rw-r--r-- | block/genhd.c | 4 |
3 files changed, 8 insertions, 7 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 86d22e7d65c5..a0dc2e72fcbb 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -60,7 +60,7 @@ static void drive_stat_acct(struct request *rq, int new_io) if (!blk_fs_request(rq) || !rq->rq_disk) return; - part = get_part(rq->rq_disk, rq->sector); + part = disk_map_sector(rq->rq_disk, rq->sector); if (!new_io) __all_stat_inc(rq->rq_disk, part, merges[rw], rq->sector); else { @@ -1557,7 +1557,8 @@ static int __end_that_request_first(struct request *req, int error, } if (blk_fs_request(req) && req->rq_disk) { - struct hd_struct *part = get_part(req->rq_disk, req->sector); + struct hd_struct *part = + disk_map_sector(req->rq_disk, req->sector); const int rw = rq_data_dir(req); all_stat_add(req->rq_disk, part, sectors[rw], @@ -1745,7 +1746,7 @@ static void end_that_request_last(struct request *req, int error) if (disk && blk_fs_request(req) && req != &req->q->bar_rq) { unsigned long duration = jiffies - req->start_time; const int rw = rq_data_dir(req); - struct hd_struct *part = get_part(disk, req->sector); + struct hd_struct *part = disk_map_sector(disk, req->sector); __all_stat_inc(disk, part, ios[rw], req->sector); __all_stat_add(disk, part, ticks[rw], duration, req->sector); diff --git a/block/blk-merge.c b/block/blk-merge.c index d81d91419ff5..9b17da698d7c 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -387,8 +387,8 @@ static int attempt_merge(struct request_queue *q, struct request *req, elv_merge_requests(q, req, next); if (req->rq_disk) { - struct hd_struct *part - = get_part(req->rq_disk, req->sector); + struct hd_struct *part = + disk_map_sector(req->rq_disk, req->sector); disk_round_stats(req->rq_disk); req->rq_disk->in_flight--; if (part) { diff --git a/block/genhd.c b/block/genhd.c index 8b9a9ff1a842..11038fbc75ed 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -568,7 +568,7 @@ static int diskstats_show(struct seq_file *s, void *v) { struct gendisk *gp = v; char buf[BDEVNAME_SIZE]; - int n = 0; + int n; /* if (&gp->dev.kobj.entry == block_class.devices.next) @@ -582,7 +582,7 @@ static int diskstats_show(struct seq_file *s, void *v) disk_round_stats(gp); preempt_enable(); seq_printf(s, "%4d %4d %s %lu %lu %llu %u %lu %lu %llu %u %u %u %u\n", - gp->major, n + gp->first_minor, disk_name(gp, n, buf), + gp->major, gp->first_minor, disk_name(gp, 0, buf), disk_stat_read(gp, ios[0]), disk_stat_read(gp, merges[0]), (unsigned long long)disk_stat_read(gp, sectors[0]), jiffies_to_msecs(disk_stat_read(gp, ticks[0])), |