tile: use simpler API for random address requests

Currently, all callers to randomize_range() set the length to 0 and
calculate end by adding a constant to the start address.  We can simplify
the API to remove a bunch of needless checks and variables.

Use the new randomize_addr(start, range) call to set the requested
address.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jason Cooper <[email protected]>
Acked-by: Kees Cook <[email protected]>
Cc: "Theodore Ts'o" <[email protected]>
Cc: Chris Metcalf <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/arch/tile/mm/mmap.c b/arch/tile/mm/mmap.c
index 851a94e6ae58061824917c82ee2ae0d8fe0f4b41..ef61c597898bc02e92cf352663b0d819bea2164c 100644 (file)
--- a/arch/tile/mm/mmap.c
+++ b/arch/tile/mm/mmap.c
@@ -88,6 +88,5 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 
 unsigned long arch_randomize_brk(struct mm_struct *mm)
 {
-       unsigned long range_end = mm->brk + 0x02000000;
-       return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
+       return randomize_page(mm->brk, 0x02000000);
 }