Re: [PATCH][RFT](2) minimal rmap for 2.5 - akpm tested

[Linus Torvalds <torvalds@transmeta.com>]

On Sat, 6 Jul 2002, Andrew Morton wrote:
>
> That is basically what do_munmap() does.  But I'm quite unfamiliar
> with the locking in there.

The only major user of i_shared is really vmtruncate, I think, and it's
quite ok to unmap the file before removing the mapping from the shared
list - if vmtruncate finds a unmapped area, it just won't be doing
anything (zap_page_range, but that won't do anything without any page
tables).

Together with the fact that unmap() already does it this way anyway, it
looks like the obvious fix..

		Linus

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