linux-kernel - [PATCH] memblock: remove unneeded local variable nid

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Date:   Thu, 17 Feb 2022 22:07:54 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <rppt@...nel.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] memblock: remove unneeded local variable nid

The nid is only used to act as output parameter of __next_mem_range.
Since NULL can be passed to __next_mem_range as out_nid, we can thus
remove nid by passing NULL here.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/memblock.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index 1018e50566f3..11561bbff8f5 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1278,11 +1278,10 @@ __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
 {
 	int zone_nid = zone_to_nid(zone);
 	phys_addr_t spa, epa;
-	int nid;
 
 	__next_mem_range(idx, zone_nid, MEMBLOCK_NONE,
 			 &memblock.memory, &memblock.reserved,
-			 &spa, &epa, &nid);
+			 &spa, &epa, NULL);
 
 	while (*idx != U64_MAX) {
 		unsigned long epfn = PFN_DOWN(epa);
@@ -1309,7 +1308,7 @@ __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
 
 		__next_mem_range(idx, zone_nid, MEMBLOCK_NONE,
 				 &memblock.memory, &memblock.reserved,
-				 &spa, &epa, &nid);
+				 &spa, &epa, NULL);
 	}
 
 	/* signal end of iteration */
-- 
2.23.0