The patch titled
Subject: mm-treewide-redefine-max_order-sanely-fix-3
has been added to the -mm mm-unstable branch. Its filename is
mm-treewide-redefine-max_order-sanely-fix-3.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-treewide-redefine-max_order-sanely-fix-3.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Subject: mm-treewide-redefine-max_order-sanely-fix-3
Date: Fri, 17 Mar 2023 02:21:44 +0300
fixups per Zi Yan
Link: https://lkml.kernel.org/r/20230316232144.b7ic4cif4kjiabws@xxxxxxxxxxxxxxxxx
Signed-off-by: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/Documentation/admin-guide/kdump/vmcoreinfo.rst~mm-treewide-redefine-max_order-sanely-fix-3
+++ a/Documentation/admin-guide/kdump/vmcoreinfo.rst
@@ -189,7 +189,7 @@ Offsets of the vmap_area's members. They
information. Makedumpfile gets the start address of the vmalloc region
from this.
-(zone.free_area, MAX_ORDER)
+(zone.free_area, MAX_ORDER + 1)
---------------------------
Free areas descriptor. User-space tools use this value to iterate the
--- a/kernel/events/ring_buffer.c~mm-treewide-redefine-max_order-sanely-fix-3
+++ a/kernel/events/ring_buffer.c
@@ -814,7 +814,7 @@ struct perf_buffer *rb_alloc(int nr_page
size = sizeof(struct perf_buffer);
size += nr_pages * sizeof(void *);
- if (order_base_2(size) >= PAGE_SHIFT+MAX_ORDER)
+ if (order_base_2(size) > PAGE_SHIFT+MAX_ORDER)
goto fail;
node = (cpu == -1) ? cpu : cpu_to_node(cpu);
--- a/mm/Kconfig~mm-treewide-redefine-max_order-sanely-fix-3
+++ a/mm/Kconfig
@@ -666,8 +666,8 @@ config HUGETLB_PAGE_SIZE_VARIABLE
HUGETLB_PAGE_ORDER when there are multiple HugeTLB page sizes available
on a platform.
- Note that the pageblock_order cannot exceed MAX_ORDER - 1 and will be
- clamped down to MAX_ORDER - 1.
+ Note that the pageblock_order cannot exceed MAX_ORDER and will be
+ clamped down to MAX_ORDER.
config CONTIG_ALLOC
def_bool (MEMORY_ISOLATION && COMPACTION) || CMA
--- a/mm/slub.c~mm-treewide-redefine-max_order-sanely-fix-3
+++ a/mm/slub.c
@@ -4697,7 +4697,7 @@ __setup("slub_min_order=", setup_slub_mi
static int __init setup_slub_max_order(char *str)
{
get_option(&str, (int *)&slub_max_order);
- slub_max_order = min(slub_max_order, (unsigned int)MAX_ORDER);
+ slub_max_order = min_t(unsigned int, slub_max_order, MAX_ORDER);
return 1;
}
_
Patches currently in -mm which might be from kirill@xxxxxxxxxxxxx are
mm-treewide-redefine-max_order-sanely-fix.patch
mm-treewide-redefine-max_order-sanely-fix-3.patch
