[patch 1/7] 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 <[EMAIL PROTECTED]> Index: linux-2.6/mm/filemap.c

[patch 1/7] 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 [EMAIL PROTECTED] Index: linux-2.6/mm/filemap.c