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[PATCH] mm/page_alloc: remove redundant init code for ZONE_MOVABLE

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  [PATCH] mm/page_alloc: remove redundant init code for ZONE_MOVABLE Wei Yang <richard.weiyang@gmail.com> - 2017-02-09 15:20 +0100
    Re: [PATCH] mm/page_alloc: remove redundant init code for  ZONE_MOVABLE Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2017-02-09 15:40 +0100

#1577630 — [PATCH] mm/page_alloc: remove redundant init code for ZONE_MOVABLE

arch_zone_lowest/highest_possible_pfn[] is set to 0 and [ZONE_MOVABLE] is
skipped in the loop. No need to reset them to 0 again.

This patch just removes the redundant code.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
 mm/page_alloc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 51c60c0eadcb..cc9695d14226 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6279,8 +6279,6 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
 
 		start_pfn = end_pfn;
 	}
-	arch_zone_lowest_possible_pfn[ZONE_MOVABLE] = 0;
-	arch_zone_highest_possible_pfn[ZONE_MOVABLE] = 0;
 
 	/* Find the PFNs that ZONE_MOVABLE begins at in each node */
 	memset(zone_movable_pfn, 0, sizeof(zone_movable_pfn));
-- 
2.11.0

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#1577651 — Re: [PATCH] mm/page_alloc: remove redundant init code for ZONE_MOVABLE

On 02/09/2017 07:47 PM, Wei Yang wrote:
> arch_zone_lowest/highest_possible_pfn[] is set to 0 and [ZONE_MOVABLE] is
> skipped in the loop. No need to reset them to 0 again.
> 
> This patch just removes the redundant code.

Yeah, sounds pretty straight forward.

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