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dm: rename __dm_get_reserved_ios() helper to __dm_get_module_param()

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

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2015-02-27 22:25:26 -05:00
parent e73f6e8a0d
commit 09c2d53101
1 changed files with 13 additions and 13 deletions
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26
drivers/md/dm.c
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@ -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);