提交 47a00410 编写于 作者: J Jens Axboe 提交者: Jens Axboe

[BLOCK] Document the READ/WRITE splitup of the disk stats

Use the symbolic name where appropriate and add a comment to the
disk_stats structure.
Signed-off-by: NJens Axboe <axboe@suse.de>
上级 cff3ba22
......@@ -391,12 +391,14 @@ static ssize_t disk_stats_read(struct gendisk * disk, char *page)
"%8u %8u %8llu %8u "
"%8u %8u %8u"
"\n",
disk_stat_read(disk, ios[0]), disk_stat_read(disk, merges[0]),
(unsigned long long)disk_stat_read(disk, sectors[0]),
jiffies_to_msecs(disk_stat_read(disk, ticks[0])),
disk_stat_read(disk, ios[1]), disk_stat_read(disk, merges[1]),
(unsigned long long)disk_stat_read(disk, sectors[1]),
jiffies_to_msecs(disk_stat_read(disk, ticks[1])),
disk_stat_read(disk, ios[READ]),
disk_stat_read(disk, merges[READ]),
(unsigned long long)disk_stat_read(disk, sectors[READ]),
jiffies_to_msecs(disk_stat_read(disk, ticks[READ])),
disk_stat_read(disk, ios[WRITE]),
disk_stat_read(disk, merges[WRITE]),
(unsigned long long)disk_stat_read(disk, sectors[WRITE]),
jiffies_to_msecs(disk_stat_read(disk, ticks[WRITE])),
disk->in_flight,
jiffies_to_msecs(disk_stat_read(disk, io_ticks)),
jiffies_to_msecs(disk_stat_read(disk, time_in_queue)));
......
......@@ -78,7 +78,7 @@ struct hd_struct {
sector_t start_sect;
sector_t nr_sects;
struct kobject kobj;
unsigned ios[2], sectors[2];
unsigned ios[2], sectors[2]; /* READs and WRITEs */
int policy, partno;
};
......@@ -89,7 +89,7 @@ struct hd_struct {
#define GENHD_FL_SUPPRESS_PARTITION_INFO 32
struct disk_stats {
unsigned sectors[2];
unsigned sectors[2]; /* READs and WRITEs */
unsigned ios[2];
unsigned merges[2];
unsigned ticks[2];
......
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