Re: [PATCH 0/3] mm/mmap.c: don't unmap the overlapping VMA(s)

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On Sat, Apr 02, 2016 at 09:17:31PM +0200, Piotr Kwapulinski wrote:
> @@ -19,6 +19,7 @@
>  #define MAP_TYPE	0x0f		/* Mask for type of mapping */
>  #define MAP_FIXED	0x10		/* Interpret addr exactly */
>  #define MAP_ANONYMOUS	0x20		/* don't use a file */
> +#define MAP_DONTUNMAP	0x40		/* don't unmap overlapping VMA */

NAK.

arch/powerpc/include/uapi/asm/mman.h:#define MAP_NORESERVE   0x40            /* don't reserve swap pages */
arch/sparc/include/uapi/asm/mman.h:#define MAP_NORESERVE   0x40            /* don't reserve swap pages */
arch/x86/include/uapi/asm/mman.h:#define MAP_32BIT      0x40            /* only give out 32bit addresses */

-- 
 Kirill A. Shutemov

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