+ mmzone-simplify-zone_intersects.patch added to -mm tree

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The patch titled
     Subject: include/linux/mmzone.h: simplify zone_intersects()
has been added to the -mm tree.  Its filename is
     mmzone-simplify-zone_intersects.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mmzone-simplify-zone_intersects.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mmzone-simplify-zone_intersects.patch

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------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxx>
Subject: include/linux/mmzone.h: simplify zone_intersects()

To make sure a range intersects a zone, only two comparisons are
necessary.  Simplify the function a little.

Link: http://lkml.kernel.org/r/20170616092335.5177-1-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 include/linux/mmzone.h |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff -puN include/linux/mmzone.h~mmzone-simplify-zone_intersects include/linux/mmzone.h
--- a/include/linux/mmzone.h~mmzone-simplify-zone_intersects
+++ a/include/linux/mmzone.h
@@ -541,15 +541,11 @@ static inline bool zone_intersects(struc
 {
 	if (zone_is_empty(zone))
 		return false;
-	if (start_pfn >= zone_end_pfn(zone))
+	if (start_pfn >= zone_end_pfn(zone) ||
+	    start_pfn + nr_pages <= zone->zone_start_pfn)
 		return false;
 
-	if (zone->zone_start_pfn <= start_pfn)
-		return true;
-	if (start_pfn + nr_pages > zone->zone_start_pfn)
-		return true;
-
-	return false;
+	return true;
 }
 
 /*
_

Patches currently in -mm which might be from richard.weiyang@xxxxxxxxx are

mm-slub-remove-a-redundant-assignment-in-___slab_alloc.patch
mm-slub-reset-cpu_slabs-pointer-in-deactivate_slab.patch
mm-slub-pack-red_left_pad-with-another-int-to-save-a-word.patch
mm-slub-wrap-cpu_slab-partial-in-config_slub_cpu_partial.patch
mm-slub-wrap-kmem_cache-cpu_partial-in-config-config_slub_cpu_partial.patch
mm-nobootmem-return-0-when-start_pfn-equals-end_pfn.patch
mmzone-simplify-zone_intersects.patch
mm-page_alloc-return-0-in-case-this-node-has-no-page-within-the-zone.patch

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