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SubjectRe: [RFC][PATCH 3/4] deadlock prevention core
Peter Zijlstra wrote:
> Index: linux-2.6/include/linux/gfp.h
> ===================================================================
> --- linux-2.6.orig/include/linux/gfp.h 2006-08-12 12:56:06.000000000 +0200
> +++ linux-2.6/include/linux/gfp.h 2006-08-12 12:56:09.000000000 +0200
> @@ -46,6 +46,7 @@ struct vm_area_struct;
> #define __GFP_ZERO ((__force gfp_t)0x8000u)/* Return zeroed page on success */
> #define __GFP_NOMEMALLOC ((__force gfp_t)0x10000u) /* Don't use emergency reserves */
> #define __GFP_HARDWALL ((__force gfp_t)0x20000u) /* Enforce hardwall cpuset memory allocs */
> +#define __GFP_MEMALLOC ((__force gfp_t)0x40000u) /* Use emergency reserves */

This symbol name has nothing to do with its purpose. The entire area of
code you are modifying could be described as having something to do with

GFP_EMERGENCY or GFP_USE_RESERVES or somesuch would be a far better
symbol name.

I recognize that is matches with GFP_NOMEMALLOC, but that doesn't change
the situation anyway. In fact, a cleanup patch to rename GFP_NOMEMALLOC
would be nice.


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