The patch titled
Subject: mm: remove zone_id() and make use of zone_idx() in is_dev_zone()
has been added to the -mm tree. Its filename is
mm-remove-zone_id-and-make-use-of-zone_idx-in-is_dev_zone.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-remove-zone_id-and-make-use-of-zone_idx-in-is_dev_zone.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-remove-zone_id-and-make-use-of-zone_idx-in-is_dev_zone.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm: remove zone_id() and make use of zone_idx() in is_dev_zone()
is_dev_zone() is using zone_id() to check if the zone is ZONE_DEVICE.
zone_id() looks pretty much the same as zone_idx(), and while the use of
zone_idx() is quite spread in the kernel, zone_id() is only being used by
is_dev_zone().
This patch removes zone_id() and makes is_dev_zone() use zone_idx() to
check the zone, so we do not have two things with the same functionality
around.
Link: http://lkml.kernel.org/r/20180730133718.28683-1-osalvador@xxxxxxxxxxxxxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Reviewed-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN include/linux/mmzone.h~mm-remove-zone_id-and-make-use-of-zone_idx-in-is_dev_zone include/linux/mmzone.h
--- a/include/linux/mmzone.h~mm-remove-zone_id-and-make-use-of-zone_idx-in-is_dev_zone
+++ a/include/linux/mmzone.h
@@ -755,25 +755,6 @@ static inline bool pgdat_is_empty(pg_dat
return !pgdat->node_start_pfn && !pgdat->node_spanned_pages;
}
-static inline int zone_id(const struct zone *zone)
-{
- struct pglist_data *pgdat = zone->zone_pgdat;
-
- return zone - pgdat->node_zones;
-}
-
-#ifdef CONFIG_ZONE_DEVICE
-static inline bool is_dev_zone(const struct zone *zone)
-{
- return zone_id(zone) == ZONE_DEVICE;
-}
-#else
-static inline bool is_dev_zone(const struct zone *zone)
-{
- return false;
-}
-#endif
-
#include <linux/memory_hotplug.h>
void build_all_zonelists(pg_data_t *pgdat);
@@ -824,6 +805,18 @@ static inline int local_memory_node(int
*/
#define zone_idx(zone) ((zone) - (zone)->zone_pgdat->node_zones)
+#ifdef CONFIG_ZONE_DEVICE
+static inline bool is_dev_zone(const struct zone *zone)
+{
+ return zone_idx(zone) == ZONE_DEVICE;
+}
+#else
+static inline bool is_dev_zone(const struct zone *zone)
+{
+ return false;
+}
+#endif
+
/*
* Returns true if a zone has pages managed by the buddy allocator.
* All the reclaim decisions have to use this function rather than
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mm-memory_hotplug-make-add_memory_resource-use-__try_online_node.patch
mm-memory_hotplug-call-register_mem_sect_under_node.patch
mm-memory_hotplug-make-register_mem_sect_under_node-a-cb-of-walk_memory_range.patch
mm-memory_hotplug-drop-unnecessary-checks-from-register_mem_sect_under_node.patch
mm-sparse-make-sparse_init_one_section-void-and-remove-check.patch
mm-remove-zone_id-and-make-use-of-zone_idx-in-is_dev_zone.patch
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