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authorMike Kravetz <mike.kravetz@oracle.com>2023-10-19 05:31:06 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-10-26 02:47:07 +0300
commitcfb8c75099dbf152db1b075eead5029c5a30ce51 (patch)
treedcce91e1071ed741f26166bbf0c1aebc1acb2910 /mm/hugetlb_vmemmap.h
parent79359d6d24df2f304abbf6f137b01d2b76175ce3 (diff)
downloadlinux-cfb8c75099dbf152db1b075eead5029c5a30ce51.tar.xz
hugetlb: perform vmemmap restoration on a list of pages
The routine update_and_free_pages_bulk already performs vmemmap restoration on the list of hugetlb pages in a separate step. In preparation for more functionality to be added in this step, create a new routine hugetlb_vmemmap_restore_folios() that will restore vmemmap for a list of folios. This new routine must provide sufficient feedback about errors and actual restoration performed so that update_and_free_pages_bulk can perform optimally. Special care must be taken when encountering an error from hugetlb_vmemmap_restore_folios. We want to continue making as much forward progress as possible. A new routine bulk_vmemmap_restore_error handles this specific situation. Link: https://lkml.kernel.org/r/20231019023113.345257-5-mike.kravetz@oracle.com Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Barry Song <21cnbao@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: James Houghton <jthoughton@google.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Konrad Dybcio <konradybcio@kernel.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Usama Arif <usama.arif@bytedance.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb_vmemmap.h')
-rw-r--r--mm/hugetlb_vmemmap.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/hugetlb_vmemmap.h b/mm/hugetlb_vmemmap.h
index c512e388dbb4..a0dcf49f46ba 100644
--- a/mm/hugetlb_vmemmap.h
+++ b/mm/hugetlb_vmemmap.h
@@ -19,6 +19,9 @@
#ifdef CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
int hugetlb_vmemmap_restore(const struct hstate *h, struct page *head);
+long hugetlb_vmemmap_restore_folios(const struct hstate *h,
+ struct list_head *folio_list,
+ struct list_head *non_hvo_folios);
void hugetlb_vmemmap_optimize(const struct hstate *h, struct page *head);
void hugetlb_vmemmap_optimize_folios(struct hstate *h, struct list_head *folio_list);
@@ -45,6 +48,14 @@ static inline int hugetlb_vmemmap_restore(const struct hstate *h, struct page *h
return 0;
}
+static long hugetlb_vmemmap_restore_folios(const struct hstate *h,
+ struct list_head *folio_list,
+ struct list_head *non_hvo_folios)
+{
+ list_splice_init(folio_list, non_hvo_folios);
+ return 0;
+}
+
static inline void hugetlb_vmemmap_optimize(const struct hstate *h, struct page *head)
{
}