The quilt patch titled
Subject: mm/sparse: guard the size of mem_section is power of 2
has been removed from the -mm tree. Its filename was
mm-sparse-guard-the-size-of-mem_section-is-power-of-2.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxx>
Subject: mm/sparse: guard the size of mem_section is power of 2
Date: Tue, 16 Apr 2024 01:25:59 +0000
We usually have this check, while commit 2a3cb8baef71 ("mm/sparse: delete
old sparse_init and enable new one") missed to take it.
Link: https://lkml.kernel.org/r/20240416012559.4536-1-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Acked-by: Oscar Salvador <osalvador@xxxxxxx>
Reviewed-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/sparse.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/sparse.c~mm-sparse-guard-the-size-of-mem_section-is-power-of-2
+++ a/mm/sparse.c
@@ -560,6 +560,8 @@ void __init sparse_init(void)
unsigned long pnum_end, pnum_begin, map_count = 1;
int nid_begin;
+ /* see include/linux/mmzone.h 'struct mem_section' definition */
+ BUILD_BUG_ON(!is_power_of_2(sizeof(struct mem_section)));
memblocks_present();
pnum_begin = first_present_section_nr();
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxx are
