Re: [PATCH] restore protections after forced fault in get_user_pages

[Linus Torvalds]

On Mon, 2 Feb 2004, Andrew Morton wrote:
> 
> One way to handle that would be to give the `write' arg to
> handle_mm_fault() a third value which means "give us a writeable page, but
> don't make the pte writeable".  Maybe that isn't warranted for this special
> case.  But it would be better, really.

I agree - it would be a "fault for an exclusive write, but don't do the
writability part". I don't think any of the low-level filesystems would 
even know about that flag, since the actual page table accesses are done 
by the generic VM.

		Linus
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