Commit e68b903c authored by Martin K. Petersen's avatar Martin K. Petersen Committed by Jens Axboe
Browse files

Expose hardware sector size 



Expose hardware sector size in sysfs queue directory.

Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 7da975a2

block/blk-sysfs.c

+11 −0
Original line number Diff line number Diff line
@@ -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,

};