On 6/5/22 12:55, Bart Van Assche wrote: > On 6/1/22 10:05, Avri Altman wrote: >> As a design rule, sysfs attribute files should not be used to make >> persistent modifications to a device configuration. This rule applies >> to all subsystems and ufs is no different. > > Hmm ... where does that rule come from? I can't find it in > Documentation/admin-guide/sysfs-rules.rst. Did I perhaps overlook something? I am not aware of any writable sysfs attribute file that can be used to make persistent device configuration changes, at least in storage area. I know of plenty that do change a device setting, but without saving this setting to maintain it across power cycles. Do you know of any such attribute ? I was under the impression that sysfs should not be used to persistently reconfigure a device... -- Damien Le Moal Western Digital Research
