From: Anshuman Khandual <anshuman.khandual@arm.com>
Date: Mon, 29 Sep 2025 10:46:43 +0000 (+0100)
Subject: mm/thp: drop follow_devmap_pmd() default stub
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f13fb2dca05f2ae433a547ed690fd5706c39b26e;p=users%2Fjedix%2Flinux-maple.git

mm/thp: drop follow_devmap_pmd() default stub

follow_devmap_pmd() has already been dropped by the commit fd2825b0760a
("mm/gup: remove pXX_devmap usage from get_user_pages()").  The fallback
stub in the header which is now redundant, can be dropped off as well.

Link: https://lkml.kernel.org/r/20250929104643.1100421-1-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index f327d62fc985..e3ed008a076a 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -691,12 +691,6 @@ static inline void mm_put_huge_zero_folio(struct mm_struct *mm)
 	return;
 }
 
-static inline struct page *follow_devmap_pmd(struct vm_area_struct *vma,
-	unsigned long addr, pmd_t *pmd, int flags, struct dev_pagemap **pgmap)
-{
-	return NULL;
-}
-
 static inline bool thp_migration_supported(void)
 {
 	return false;