Re: [PATCH -v8 3/4] Enable the MS_ASYNC functionality insys_msync()

[Linus Torvalds]

On Wed, 23 Jan 2008, Hugh Dickins wrote:
> 
> Something I dislike about it, though, is that it leaves the RAM-backed
> filesystems (ramfs, tmpfs, whatever) behaving visibly differently from
> the others.

I hear you. 

But I'm not seeing many alternatives, unless we start taking write faults 
on them unnecessarily. Do we care? Probably not really. 

So we certainly *could* make ramfs/tmpfs claim they do dirty accounting, 
but just having a no-op writeback. Without that, they'd need something 
really special in the file time updates.

Personally, I don't really see anybody really caring one way or the other, 
but who knows..

		Linus
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