Touching the pte directly causes the 8Mbyte TLB entry to be invalidated.

This has been fixed in v2.4 for ages.
Signed-off-by: NMarcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>