[132/192] mm/page_alloc: add an alloc_pages_bulk_array_node() helper

Commit Message

Andrew Morton June 29, 2021, 2:40 a.m. UTC

From: "Uladzislau Rezki (Sony)" <[e-mail]>
Subject: mm/page_alloc: add an alloc_pages_bulk_array_node() helper

Patch series "vmalloc() vs bulk allocator", v2.


This patch (of 3):

Add a "node" variant of the alloc_pages_bulk_array() function.  The helper
guarantees that a __alloc_pages_bulk() is invoked with a valid NUMA node
ID.

Link: https://lkml.kernel.org/r/[e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Uladzislau Rezki (Sony) <[e-mail]>
Acked-by: Mel Gorman <[e-mail]>
Cc: Mel Gorman <[e-mail]>
Cc: Matthew Wilcox <[e-mail]>
Cc: Nicholas Piggin <[e-mail]>
Cc: Hillf Danton <[e-mail]>
Cc: Michal Hocko <[e-mail]>
Cc: Oleksiy Avramchenko <[e-mail]>
Cc: Steven Rostedt <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 include/linux/gfp.h |    9 +++++++++
 1 file changed, 9 insertions(+)

Patch

--- a/include/linux/gfp.h~mm-page_alloc-add-an-alloc_pages_bulk_array_node-helper
+++ a/include/linux/gfp.h
@@ -536,6 +536,15 @@  alloc_pages_bulk_array(gfp_t gfp, unsign
 	return __alloc_pages_bulk(gfp, numa_mem_id(), NULL, nr_pages, NULL, page_array);
 }
 
+static inline unsigned long
+alloc_pages_bulk_array_node(gfp_t gfp, int nid, unsigned long nr_pages, struct page **page_array)
+{
+	if (nid == NUMA_NO_NODE)
+		nid = numa_mem_id();
+
+	return __alloc_pages_bulk(gfp, nid, NULL, nr_pages, NULL, page_array);
+}
+
 /*
  * Allocate pages, preferring the node given as nid. The node must be valid and
  * online. For more general interface, see alloc_pages_node().