The patch titled
mm: page_alloc: increase __GFP_BITS_SHIFT to include __GFP_OTHER_NODE
has been removed from the -mm tree. Its filename was
mm-page_alloc-increase-__gfp_bits_shift-to-include-__gfp_other_node.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: page_alloc: increase __GFP_BITS_SHIFT to include __GFP_OTHER_NODE
From: Johannes Weiner <hannes@xxxxxxxxxxx>
__GFP_OTHER_NODE is used for NUMA allocations on behalf of other nodes.
It's supposed to be passed through from the page allocator to
zone_statistics(), but it never gets there as gfp_allowed_mask is not wide
enough and masks out the flag early in the allocation path.
The result is an accounting glitch where successful NUMA allocations
by-agent are not properly attributed as local.
Increase __GFP_BITS_SHIFT so that it includes __GFP_OTHER_NODE.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/gfp.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/gfp.h~mm-page_alloc-increase-__gfp_bits_shift-to-include-__gfp_other_node include/linux/gfp.h
--- a/include/linux/gfp.h~mm-page_alloc-increase-__gfp_bits_shift-to-include-__gfp_other_node
+++ a/include/linux/gfp.h
@@ -92,7 +92,7 @@ struct vm_area_struct;
*/
#define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK)
-#define __GFP_BITS_SHIFT 23 /* Room for 23 __GFP_FOO bits */
+#define __GFP_BITS_SHIFT 24 /* Room for N __GFP_FOO bits */
#define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
/* This equals 0, but use constants in case they ever change */
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
linux-next.patch
mm-compaction-trivial-clean-up-in-acct_isolated.patch
mm-change-isolate-mode-from-define-to-bitwise-type.patch
mm-compaction-make-isolate_lru_page-filter-aware.patch
mm-zone_reclaim-make-isolate_lru_page-filter-aware.patch
mm-migration-clean-up-unmap_and_move.patch
mm-page-writebackc-make-determine_dirtyable_memory-static-again.patch
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