mm/kasan/kasan_init.c: use kasan_zero_pud for p4d table

There is missing optimization in zero_p4d_populate() that can save some
memory when mapping zero shadow.  Implement it like as others.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Andrey Ryabinin <[email protected]>
Cc: "Kirill A . Shutemov" <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions