mainline inclusion from mainline commit 6a898c2757af1ac852bb917a0866d2724f303076 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I96CYK CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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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@huawei.com Signed-off-by: Yuan Can yuancan@huawei.com Suggested-by: Mike Kravetz mike.kravetz@oracle.com Reviewed-by: Mike Kravetz mike.kravetz@oracle.com Suggested-by: Muchun Song songmuchun@bytedance.com Reviewed-by: Muchun Song songmuchun@bytedance.com Signed-off-by: Andrew Morton akpm@linux-foundation.org --- mm/hugetlb_vmemmap.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c index b3bc59160003..beaae51033db 100644 --- a/mm/hugetlb_vmemmap.c +++ b/mm/hugetlb_vmemmap.c @@ -320,8 +320,7 @@ static int vmemmap_remap_free(unsigned long start, unsigned long end, .vmemmap_pages = &vmemmap_pages, }; int nid = page_to_nid((struct page *)reuse); - 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