tree 64c8439a53f4ca402a9d7deb2a455aa0de08c8ea
parent f96efd585b8d847181f81bf16721f96ded18d9fe
author Nick Piggin <npiggin@suse.de> 1184567892 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1184601935 -0700

mm: debug check for the fault vs invalidate race

Add a bugcheck for Andrea's pagefault vs invalidate race.  This is triggerable
for both linear and nonlinear pages with a userspace test harness (using
direct IO and truncate, respectively).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>