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Message-Id: <20160726030201.6775-5-jason@lakedaemon.net>
Date: Tue, 26 Jul 2016 03:01:59 +0000
From: Jason Cooper <jason@...edaemon.net>
To: william.c.roberts@...el.com,
linux-mm@...r.kernel.org,
linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com
Cc: Jason Cooper <jason@...edaemon.net>,
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Subject: [RFC patch 5/6] 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.
Signed-off-by: Jason Cooper <jason@...edaemon.net>
---
arch/tile/mm/mmap.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/tile/mm/mmap.c b/arch/tile/mm/mmap.c
index 851a94e6ae58..50f6a693a2b6 100644
--- 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_addr(mm->brk, 0x02000000);
}
--
2.9.2
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