Commit 09c2d531 authored by Mike Snitzer's avatar Mike Snitzer
Browse files

dm: rename __dm_get_reserved_ios() helper to __dm_get_module_param() 



__dm_get_module_param() could be useful for future DM module parameters
besides those related to "reserved_ios".

Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent e73f6e8a

drivers/md/dm.c

+13 −13
Original line number Diff line number Diff line
@@ -250,35 +250,35 @@ static unsigned reserved_bio_based_ios = RESERVED_BIO_BASED_IOS; 
 */

static unsigned reserved_rq_based_ios = RESERVED_REQUEST_BASED_IOS;



static unsigned __dm_get_reserved_ios(unsigned *reserved_ios,

static unsigned __dm_get_module_param(unsigned *module_param,

				      unsigned def, unsigned max)

{

	unsigned ios = ACCESS_ONCE(*reserved_ios);

	unsigned modified_ios = 0;

	unsigned param = ACCESS_ONCE(*module_param);

	unsigned modified_param = 0;



	if (!ios)

		modified_ios = def;

	else if (ios > max)

		modified_ios = max;

	if (!param)

		modified_param = def;

	else if (param > max)

		modified_param = max;



	if (modified_ios) {

		(void)cmpxchg(reserved_ios, ios, modified_ios);

		ios = modified_ios;

	if (modified_param) {

		(void)cmpxchg(module_param, param, modified_param);

		param = modified_param;

	}



	return ios;

	return param;

}



unsigned dm_get_reserved_bio_based_ios(void)

{

	return __dm_get_reserved_ios(&reserved_bio_based_ios,

	return __dm_get_module_param(&reserved_bio_based_ios,

				     RESERVED_BIO_BASED_IOS, RESERVED_MAX_IOS);

}

EXPORT_SYMBOL_GPL(dm_get_reserved_bio_based_ios);



unsigned dm_get_reserved_rq_based_ios(void)

{

	return __dm_get_reserved_ios(&reserved_rq_based_ios,

	return __dm_get_module_param(&reserved_rq_based_ios,

				     RESERVED_REQUEST_BASED_IOS, RESERVED_MAX_IOS);

}

EXPORT_SYMBOL_GPL(dm_get_reserved_rq_based_ios);