linux-kernel - [PATCH] mm: don't use the same value for MAP_FIXED_SAFE and MAP

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Date:   Mon, 18 Dec 2017 10:49:16 -0800
From:   Andrei Vagin <avagin@...nvz.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        Andrei Vagin <avagin@...nvz.org>,
        Michal Hocko <mhocko@...nel.org>
Subject: [PATCH] mm: don't use the same value for MAP_FIXED_SAFE and MAP_SYNC

Cc: Michal Hocko <mhocko@...nel.org>
Fixes: ("fs, elf: drop MAP_FIXED usage from elf_map")
Signed-off-by: Andrei Vagin <avagin@...nvz.org>
---
 include/uapi/asm-generic/mman-common.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
index b37502cbbef7..2db3fa287274 100644
--- a/include/uapi/asm-generic/mman-common.h
+++ b/include/uapi/asm-generic/mman-common.h
@@ -26,7 +26,9 @@
 #else
 # define MAP_UNINITIALIZED 0x0		/* Don't support this flag */
 #endif
-#define MAP_FIXED_SAFE	0x80000		/* MAP_FIXED which doesn't unmap underlying mapping */
+
+/* 0x0100 - 0x80000 flags are defined in asm-generic/mman.h */
+#define MAP_FIXED_SAFE	0x100000		/* MAP_FIXED which doesn't unmap underlying mapping */
 
 /*
  * Flags for mlock
-- 
2.13.6