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Message-Id: <bbacff94d0c38163ef01361de006797c92e69e58.1287090286.git.cmetcalf@tilera.com>
Date: Thu, 14 Oct 2010 15:09:02 -0400
From: Chris Metcalf <cmetcalf@...era.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 02/14] arch/tile: provide a definition of MAP_STACK
It's convenient for userspace (in particular, glibc) to find a
definition of MAP_STACK. We use MAP_GROWSDOWN as an alias since
that's appropriate for the main stack, and since our current
allocation of mmap flags bits is running a bit short otherwise.
Signed-off-by: Chris Metcalf <cmetcalf@...era.com>
---
arch/tile/include/asm/mman.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/tile/include/asm/mman.h b/arch/tile/include/asm/mman.h
index 4c6811e..81b8fc3 100644
--- a/arch/tile/include/asm/mman.h
+++ b/arch/tile/include/asm/mman.h
@@ -23,6 +23,7 @@
#define MAP_POPULATE 0x0040 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x0080 /* do not block on IO */
#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
+#define MAP_STACK MAP_GROWSDOWN /* provide convenience alias */
#define MAP_LOCKED 0x0200 /* pages are locked */
#define MAP_NORESERVE 0x0400 /* don't check for reservations */
#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
--
1.6.5.2
--
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