Patchwork [11/16] mm: use vm_unmapped_area() on arm architecture

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Submitter Andrew Morton
Date Nov. 6, 2012, 10:38 p.m.
Message ID <20121106143835.3e321da4.akpm@linux-foundation.org>
Download mbox | patch
Permalink /patch/197570/
State Not Applicable
Delegated to: David Miller
Headers show

Comments

Andrew Morton - Nov. 6, 2012, 10:38 p.m.
On Mon,  5 Nov 2012 14:47:08 -0800
Michel Lespinasse <walken@google.com> wrote:

> Update the arm arch_get_unmapped_area[_topdown] functions to make
> use of vm_unmapped_area() instead of implementing a brute force search.

Again,

Patch

--- a/arch/arm/mm/mmap.c~mm-use-vm_unmapped_area-on-arm-architecture-fix
+++ a/arch/arm/mm/mmap.c
@@ -11,18 +11,6 @@ 
 #include <linux/random.h>
 #include <asm/cachetype.h>
 
-static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr,
-					      unsigned long pgoff)
-{
-	unsigned long base = addr & ~(SHMLBA-1);
-	unsigned long off = (pgoff << PAGE_SHIFT) & (SHMLBA-1);
-
-	if (base + off <= addr)
-		return base + off;
-
-	return base - off;
-}
-
 #define COLOUR_ALIGN(addr,pgoff)		\
 	((((addr)+SHMLBA-1)&~(SHMLBA-1)) +	\
 	 (((pgoff)<<PAGE_SHIFT) & (SHMLBA-1)))