diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/ublk_drv.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index ba7c6f9ee136..b0bbda08ad45 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -2940,7 +2940,22 @@ static void __exit ublk_exit(void) module_init(ublk_init); module_exit(ublk_exit); -module_param(ublks_max, int, 0444); +static int ublk_set_max_ublks(const char *buf, const struct kernel_param *kp) +{ + return param_set_uint_minmax(buf, kp, 0, UBLK_MAX_UBLKS); +} + +static int ublk_get_max_ublks(char *buf, const struct kernel_param *kp) +{ + return sysfs_emit(buf, "%u\n", ublks_max); +} + +static const struct kernel_param_ops ublk_max_ublks_ops = { + .set = ublk_set_max_ublks, + .get = ublk_get_max_ublks, +}; + +module_param_cb(ublks_max, &ublk_max_ublks_ops, &ublks_max, 0644); MODULE_PARM_DESC(ublks_max, "max number of ublk devices allowed to add(default: 64)"); MODULE_AUTHOR("Ming Lei <ming.lei@redhat.com>"); |