> > invalidate_page(struct page * page) {
> That's the bottom-up approach. The top-down (vmtruncate) approach
> would also work, if the locking is suitable.
The top-down approach will almost certainly be most efficient when
invalidating a large chunk of a file (truncate, large file locks)
while the bottom-up approach is probably more efficient when the
system invalidates very few pages (small file lock, cluster file
system mmap() support).
regards,
Rik
-- Bravely reimplemented by the knights who say "NIH".http://www.surriel.com/ http://distro.conectiva.com/
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