[PATCH 11/16] mm: use vm_unmapped_area() on arm architecture
From: akpm@linux-foundation.org (Andrew Morton)
Date: 2012-11-06 22:38:39
Also in:
linux-mips, linux-mm, linux-sh, lkml, sparclinux
On Mon, 5 Nov 2012 14:47:08 -0800 Michel Lespinasse [off-list ref] 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,
--- 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)))
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