[openib-general] [PATCH] Yet more sysfs support

[Michael S. Tsirkin]

Quoting r. Roland Dreier (roland at topspin.com) "Re: [openib-general] [PATCH] Yet more sysfs support":
>     Michael> When we start writing to bits (like IsSM bit) to have a
>     Michael> separate flag will be better as it will guarantee
>     Michael> automicity.
> 
> I'm not convinced sysfs is the right interface to set capability
> bits.  You lose the ability to clean up when an app exits uncleanly
> (for example leaving the IsSM bit set with no SM running).
> 
>  - Roland

Interesting. It seems we need a way to catch close on the sysfs file
and there does not seem to exist an easy way to do this.

But there *is* the hard way - by finding and replacing the f_ops pointer, no?

MST