FAILED: patch "[PATCH] mm/migrate_device.c: add missing flush_cache_page()" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Possible dependencies:

a3589e1d5fe3 ("mm/migrate_device.c: add missing flush_cache_page()")
6c287605fd56 ("mm: remember exclusively mapped anonymous pages with PG_anon_exclusive") 6c54dc6c7437 ("mm/rmap: use page_move_anon_rmap() when reusing a mapped PageAnon() page exclusively") 28c5209dfd5f ("mm/rmap: pass rmap flags to hugepage_add_anon_rmap()")
f1e2db12e45b ("mm/rmap: remove do_page_add_anon_rmap()")
14f9135d5470 ("mm/rmap: convert RMAP flags to a proper distinct rmap_t type") fb3d824d1a46 ("mm/rmap: split page_dup_rmap() into page_dup_file_rmap() and page_try_dup_anon_rmap()") b51ad4f8679e ("mm/memory: slightly simplify copy_present_pte()")
623a1ddfeb23 ("mm/hugetlb: take src_mm->write_protect_seq in copy_hugetlb_page_range()") 3bff7e3f1f16 ("mm/huge_memory: streamline COW logic in do_huge_pmd_wp_page()") c145e0b47c77 ("mm: streamline COW logic in do_swap_page()")
84d60fdd3733 ("mm: slightly clarify KSM logic in do_swap_page()")
53a05ad9f21d ("mm: optimize do_wp_page() for exclusive pages in the swapcache") 9030fb0bb9d6 ("Merge tag 'folio-5.18c' of git://git.infradead.org/users/willy/pagecache")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From a3589e1d5fe39c3d9fdd291b111524b93d08bc32 Mon Sep 17 00:00:00 2001
From: Alistair Popple <[email protected]>
Date: Fri, 2 Sep 2022 10:35:52 +1000
Subject: [PATCH] mm/migrate_device.c: add missing flush_cache_page()

Currently we only call flush_cache_page() for the anon_exclusive case, however in both cases we clear the pte so should flush the cache.

index 6a5ef9f0da6a..4cc849c3b54c 100644
@@ -193,9 +193,9 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
 			bool anon_exclusive;
 			pte_t swp_pte;
 
+			flush_cache_page(vma, addr, pte_pfn(*ptep));
 			anon_exclusive = PageAnon(page) && PageAnonExclusive(page);
 			if (anon_exclusive) {
-				flush_cache_page(vma, addr, pte_pfn(*ptep));
 				ptep_clear_flush(vma, addr, ptep);
 
 				if (page_try_share_anon_rmap(page)) {