On Tuesday, May 13, 2003 16:20:38 -0700 William Lee Irwin III [off-list ref] wrote:

quoted

The mmap_sem works because then ->i_size can't be sampled by
filemap_nopage() before the pagetable wiping operation starts.

On Tue, May 13, 2003 at 06:28:20PM -0500, Dave McCracken wrote:

So why isn't that the right way to do it?  Waiting for mmap_sem guarantees
we won't catch a page fault in flight, which is the cause of the problem in
the first place.

Oh it works fine, it's just the explanation for why it's sufficient I
was looking for.


-- wli
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