linux-kernel - [PATCH 9/12] get_unmapped_area handles MAP_FIXED on x86

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Message-Id: <20070412022033.B9584DDF24@ozlabs.org>
Date:	Thu, 12 Apr 2007 12:20:31 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Linux Memory Management <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 9/12] get_unmapped_area handles MAP_FIXED on x86_64

Handle MAP_FIXED in x86_64 arch_get_unmapped_area(), simple case, just
return the address as passed in

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>

 arch/x86_64/kernel/sys_x86_64.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux-cell/arch/x86_64/kernel/sys_x86_64.c
===================================================================
--- linux-cell.orig/arch/x86_64/kernel/sys_x86_64.c	2007-03-22 16:10:10.000000000 +1100
+++ linux-cell/arch/x86_64/kernel/sys_x86_64.c	2007-03-22 16:11:06.000000000 +1100
@@ -93,6 +93,9 @@ arch_get_unmapped_area(struct file *filp
 	unsigned long start_addr;
 	unsigned long begin, end;
 	
+	if (flags & MAP_FIXED)
+		return addr;
+
 	find_start_end(flags, &begin, &end); 
 
 	if (len > end)
-
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