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Subject[PATCH v6 4/5] mm/page_alloc: Inline function to handle CONFIG_DEFERRED_STRUCT_PAGE_INIT
Date
From: Oscar Salvador <osalvador@suse.de>

Let us move the code between CONFIG_DEFERRED_STRUCT_PAGE_INIT
to an inline function.
Not having an ifdef in the function makes the code more readable.

Signed-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com>
---
mm/page_alloc.c | 26 +++++++++++++++++---------
1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 607f98f8816d..56ee8c029759 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6366,6 +6366,22 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat)
static void __ref alloc_node_mem_map(struct pglist_data *pgdat) { }
#endif /* CONFIG_FLAT_NODE_MEM_MAP */

+#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
+static inline void pgdat_set_deferred_range(pg_data_t *pgdat)
+{
+ /*
+ * We start only with one section of pages, more pages are added as
+ * needed until the rest of deferred pages are initialized.
+ */
+
+ pgdat->static_init_pgcnt = min_t(unsigned long, PAGES_PER_SECTION,
+ pgdat->node_spanned_pages);
+ pgdat->first_deferred_pfn = ULONG_MAX;
+}
+#else
+static inline void pgdat_set_deferred_range(pg_data_t *pgdat) {}
+#endif
+
void __meminit free_area_init_node(int nid, unsigned long *zones_size,
unsigned long node_start_pfn,
unsigned long *zholes_size)
@@ -6392,16 +6408,8 @@ void __meminit free_area_init_node(int nid, unsigned long *zones_size,
zones_size, zholes_size);

alloc_node_mem_map(pgdat);
+ pgdat_set_deferred_range(pgdat);

-#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
- /*
- * We start only with one section of pages, more pages are added as
- * needed until the rest of deferred pages are initialized.
- */
- pgdat->static_init_pgcnt = min_t(unsigned long, PAGES_PER_SECTION,
- pgdat->node_spanned_pages);
- pgdat->first_deferred_pfn = ULONG_MAX;
-#endif
free_area_init_core(pgdat);
}

--
2.13.6
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