The patch titled
Subject: mm: hugetlb_vmemmap: allow alloc vmemmap pages fallback to other nodes
has been added to the -mm mm-unstable branch. Its filename is
mm-hugetlb_vmemmap-allow-alloc-vmemmap-pages-fallback-to-other-nodes.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hugetlb_vmemmap-allow-alloc-vmemmap-pages-fallback-to-other-nodes.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: Yuan Can <yuancan@xxxxxxxxxx>
Subject: mm: hugetlb_vmemmap: allow alloc vmemmap pages fallback to other nodes
Date: Wed, 6 Sep 2023 17:31:57 +0800
In vmemmap_remap_free(), a new head vmemmap page is allocated to avoid
breaking a contiguous block of struct page memory, however, the allocation
can always fail when the given node is movable node. Remove the
__GFP_THISNODE to help avoid fragmentation.
Link: https://lkml.kernel.org/r/20230906093157.9737-1-yuancan@xxxxxxxxxx
Signed-off-by: Yuan Can <yuancan@xxxxxxxxxx>
Suggested-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Suggested-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb_vmemmap.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/hugetlb_vmemmap.c~mm-hugetlb_vmemmap-allow-alloc-vmemmap-pages-fallback-to-other-nodes
+++ a/mm/hugetlb_vmemmap.c
@@ -320,8 +320,7 @@ static int vmemmap_remap_free(unsigned l
.vmemmap_pages = &vmemmap_pages,
};
int nid = page_to_nid((struct page *)start);
- gfp_t gfp_mask = GFP_KERNEL | __GFP_THISNODE | __GFP_NORETRY |
- __GFP_NOWARN;
+ gfp_t gfp_mask = GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN;
/*
* Allocate a new head vmemmap page to avoid breaking a contiguous
_
Patches currently in -mm which might be from yuancan@xxxxxxxxxx are
mm-hugetlb_vmemmap-fix-hugetlb-page-number-decrease-failed-on-movable-nodes.patch
mm-hugetlb_vmemmap-allow-alloc-vmemmap-pages-fallback-to-other-nodes.patch
