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Expose hardware sector size 

Expose hardware sector size in sysfs queue directory.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Martin K. Petersen 2008-01-29 19:14:08 +01:00 committed by Jens Axboe
parent 7da975a231
commit e68b903c6b
1 changed files with 11 additions and 0 deletions
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11
block/blk-sysfs.c
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@ -102,6 +102,11 @@ static ssize_t queue_max_sectors_show(struct request_queue *q, char *page)
return queue_var_show(max_sectors_kb, (page));
}
static ssize_t queue_hw_sector_size_show(struct request_queue *q, char *page)
{
return queue_var_show(q->hardsect_size, page);
}
static ssize_t
queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)
{
@ -160,12 +165,18 @@ static struct queue_sysfs_entry queue_iosched_entry = {
.store = elv_iosched_store,
};
static struct queue_sysfs_entry queue_hw_sector_size_entry = {
.attr = {.name = "hw_sector_size", .mode = S_IRUGO },
.show = queue_hw_sector_size_show,
};
static struct attribute *default_attrs[] = {
&queue_requests_entry.attr,
&queue_ra_entry.attr,
&queue_max_hw_sectors_entry.attr,
&queue_max_sectors_entry.attr,
&queue_iosched_entry.attr,
&queue_hw_sector_size_entry.attr,
NULL,
};