Re: [linux-usb-devel] Re: usb-storage not suitable for swapping

[Pavel Machek]

Hi!

> > Why? I think that either whole device needs GFP_NOIO or whole device can live
> > with GFP_KERNEL, but I can't imagine a device where aprt needs GFP_NOIO and
> > part does not...
> 
> I can imagine a device that includes both a usb-storage
> interface, used for swapping/paging/etc, and other
> interfaces (say, for audio/video I/O streams).  Would
> that suit as one example, or would you insist on being
> able to buy one first?  :)

Well, buy one first, and if GFP_NOIO hurts on it (it probably will
not), we'll care?

> Or with a single usb-storage interface, and vendor-specific
> control messages used to tweak something from a usermode
> tool; there's no reason to have the usermode calls use NOIO,
> but control messages to clear error status during paging will
> need it.

Yep, but NOIO does not really hurt unless you use it way too much.

                                                        Pavel


-- 
The best software in life is free (not shareware)!              Pavel
GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+

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