[Fault-injection-developer] RE: semaphore usage in xxx_store()

[Zhuang, L. <lou...@in...>]

> I'm not sure which xxx_store() function you are talking about.
> In general if a store() operation is triggering some action
> that parallel user write operations (i.e. the same store()
> being called at the same time) might cause wacky side effects
> then I would serialize the store() operations with a semaphore.
I think it is sysfs' responsibility to serialize these accesses... Maybe we
need to take a talk with Randy Dunlap in LKML.

> 
> As a result I tend to use a semaphore in my boiler plate 
> attribute code, but if we do not need the semaphore then we
> should drop it.