That code comes from the out_of_memory section; in 2.4 it was correct to put
it for "default:", since it was called when handle_mm_fault() return value was
!= 0, 1, 2, i.e.  it was 3, OOM (but the i386 code put it out of line, for
better performance).  Here, instead, the OOM case is handled on its own, so if
handle_mm_fault() != from the listed cases we must BUG().
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>