Subject: + mm-use-zone_is_empty-instead-of-ifzone-spanned_pages.patch added to -mm tree
To: qiuxishi@xxxxxxxxxx,cody@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 12 Aug 2013 12:41:35 -0700
The patch titled
Subject: mm: use zone_is_empty() instead of if(zone->spanned_pages)
has been added to the -mm tree. Its filename is
mm-use-zone_is_empty-instead-of-ifzone-spanned_pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-use-zone_is_empty-instead-of-ifzone-spanned_pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-zone_is_empty-instead-of-ifzone-spanned_pages.patch
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------------------------------------------------------
From: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Subject: mm: use zone_is_empty() instead of if(zone->spanned_pages)
Use "zone_is_empty()" instead of "if (zone->spanned_pages)".
Simplify the code, no functional change.
Signed-off-by: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Cc: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 6 +++---
mm/page_alloc.c | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
diff -puN mm/memory_hotplug.c~mm-use-zone_is_empty-instead-of-ifzone-spanned_pages mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-use-zone_is_empty-instead-of-ifzone-spanned_pages
+++ a/mm/memory_hotplug.c
@@ -230,7 +230,7 @@ static void grow_zone_span(struct zone *
zone_span_writelock(zone);
old_zone_end_pfn = zone_end_pfn(zone);
- if (!zone->spanned_pages || start_pfn < zone->zone_start_pfn)
+ if (zone_is_empty(zone) || start_pfn < zone->zone_start_pfn)
zone->zone_start_pfn = start_pfn;
zone->spanned_pages = max(old_zone_end_pfn, end_pfn) -
@@ -305,7 +305,7 @@ static int __meminit move_pfn_range_left
goto out_fail;
/* use start_pfn for z1's start_pfn if z1 is empty */
- if (z1->spanned_pages)
+ if (!zone_is_empty(z1))
z1_start_pfn = z1->zone_start_pfn;
else
z1_start_pfn = start_pfn;
@@ -347,7 +347,7 @@ static int __meminit move_pfn_range_righ
goto out_fail;
/* use end_pfn for z2's end_pfn if z2 is empty */
- if (z2->spanned_pages)
+ if (!zone_is_empty(z2))
z2_end_pfn = zone_end_pfn(z2);
else
z2_end_pfn = end_pfn;
diff -puN mm/page_alloc.c~mm-use-zone_is_empty-instead-of-ifzone-spanned_pages mm/page_alloc.c
--- a/mm/page_alloc.c~mm-use-zone_is_empty-instead-of-ifzone-spanned_pages
+++ a/mm/page_alloc.c
@@ -1306,7 +1306,7 @@ void mark_free_pages(struct zone *zone)
int order, t;
struct list_head *curr;
- if (!zone->spanned_pages)
+ if (zone_is_empty(zone))
return;
spin_lock_irqsave(&zone->lock, flags);
_
Patches currently in -mm which might be from qiuxishi@xxxxxxxxxx are
mm-hotplug-remove-unnecessary-bug_on-in-__offline_pages.patch
mm-use-zone_end_pfn-instead-of-zone_start_pfnspanned_pages.patch
mm-use-zone_is_empty-instead-of-ifzone-spanned_pages.patch
mm-use-zone_is_initialized-instead-of-ifzone-wait_table.patch
kexec-remove-unnecessary-return.patch
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