linux-kernel - [PATCH 1/3] mm/page_alloc: Add an alloc_pages_bulk_array

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Message-Id: <20210516202056.2120-2-urezki@gmail.com>
Date:   Sun, 16 May 2021 22:20:54 +0200
From:   "Uladzislau Rezki (Sony)" <urezki@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...e.de>,
        Matthew Wilcox <willy@...radead.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Uladzislau Rezki <urezki@...il.com>,
        Hillf Danton <hdanton@...a.com>,
        Michal Hocko <mhocko@...e.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 1/3] mm/page_alloc: Add an alloc_pages_bulk_array_node() helper

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.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
Acked-by: Mel Gorman <mgorman@...e.de>
---
 include/linux/gfp.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 11da8af06704..94f0b8b1cb55 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -536,6 +536,15 @@ alloc_pages_bulk_array(gfp_t gfp, unsigned long nr_pages, struct page **page_arr
 	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().
-- 
2.20.1