diff options
| -rw-r--r-- | block/blk-core.c | 7 | ||||
| -rw-r--r-- | block/blk-merge.c | 4 | ||||
| -rw-r--r-- | block/genhd.c | 4 | ||||
| -rw-r--r-- | drivers/block/aoe/aoecmd.c | 2 | ||||
| -rw-r--r-- | include/linux/genhd.h | 13 |
5 files changed, 19 insertions, 11 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 86d22e7d65c..a0dc2e72fcb 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 d81d91419ff..9b17da698d7 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 8b9a9ff1a84..11038fbc75e 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])), diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 2f1746295d0..885d1409521 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -757,7 +757,7 @@ diskstats(struct gendisk *disk, struct bio *bio, ulong duration, sector_t sector const int rw = bio_data_dir(bio); struct hd_struct *part; - part = get_part(disk, sector); + part = disk_map_sector(disk, sector); all_stat_inc(disk, part, ios[rw], sector); all_stat_add(disk, part, ticks[rw], duration, sector); all_stat_add(disk, part, sectors[rw], n_sect, sector); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index be4f5e5bfe0..c64e659c984 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -116,7 +116,7 @@ struct gendisk { int minors; /* maximum number of minors, =1 for * disks that can't be partitioned. */ char disk_name[32]; /* name of major driver */ - struct hd_struct **part; /* [indexed by minor] */ + struct hd_struct **part; /* [indexed by minor - 1] */ struct block_device_operations *fops; struct request_queue *queue; void *private_data; @@ -145,14 +145,21 @@ struct gendisk { #endif }; +static inline struct gendisk *part_to_disk(struct hd_struct *part) +{ + if (likely(part)) + return dev_to_disk((part)->dev.parent); + return NULL; +} + /* * Macros to operate on percpu disk statistics: * * The __ variants should only be called in critical sections. The full * variants disable/enable preemption. */ -static inline struct hd_struct *get_part(struct gendisk *gendiskp, - sector_t sector) +static inline struct hd_struct *disk_map_sector(struct gendisk *gendiskp, + sector_t sector) { struct hd_struct *part; int i; |