default or selected kernelversion does not have config value CONFIG_BCACHE_ASYNC_REGISTRAION.
Result is shown for kernelversion 5.9.15
Asynchronous device registration (EXPERIMENTAL)
configname: CONFIG_BCACHE_ASYNC_REGISTRAION
Linux Kernel Configuration
└─>Device Drivers
└─>Multiple devices driver support (RAID and LVM)
└─>Asynchronous device registration (EXPERIMENTAL)
In linux kernel since version 5.8 (release Date: 2020-08-02)
Add a sysfs file /sys/fs/bcache/register_async. Writing registering
device path into this file will returns immediately and the real
registration work is handled in kernel work queue in asynchronous
way.
device path into this file will returns immediately and the real
registration work is handled in kernel work queue in asynchronous
way.