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* [merged mm-stable] mm-sparse-guard-the-size-of-mem_section-is-power-of-2.patch removed from -mm tree
@ 2024-05-06  0:57 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2024-05-06  0:57 UTC (permalink / raw)
  To: mm-commits, rppt, pasha.tatashin, osalvador, richard.weiyang,
	akpm


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@gmail.com>
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@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@gmail.com are



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2024-05-06  0:57 [merged mm-stable] mm-sparse-guard-the-size-of-mem_section-is-power-of-2.patch removed from -mm tree Andrew Morton

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