+ mm-gup-handle-hugepd-for-follow_page-fix.patch added to mm-unstable branch

+ mm-gup-handle-hugepd-for-follow_page-fix.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm-gup-handle-hugepd-for-follow_page-fix
has been added to the -mm mm-unstable branch.  Its filename is
     mm-gup-handle-hugepd-for-follow_page-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-gup-handle-hugepd-for-follow_page-fix.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: Andrew Morton <akpm@linux-foundation.org>
Subject: mm-gup-handle-hugepd-for-follow_page-fix
Date: Fri Mar 22 01:41:43 PM PDT 2024

fix build warning

mm/gup.c:33:21: warning: 'follow_hugepd' declared 'static' but never defined [-Wunused-function]
   33 | static struct page *follow_hugepd(struct vm_area_struct *vma, hugepd_t hugepd,
      |                     ^~~~~~~~~~~~~

Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrew Jones <andrew.jones@linux.dev>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/gup.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/gup.c~mm-gup-handle-hugepd-for-follow_page-fix
+++ a/mm/gup.c
@@ -30,10 +30,12 @@ struct follow_page_context {
 	unsigned int page_mask;
 };
 
+#ifdef CONFIG_HAVE_FAST_GUP
 static struct page *follow_hugepd(struct vm_area_struct *vma, hugepd_t hugepd,
 				  unsigned long addr, unsigned int pdshift,
 				  unsigned int flags,
 				  struct follow_page_context *ctx);
+#endif
 
 static inline void sanity_check_pinned_pages(struct page **pages,
 					     unsigned long npages)
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

mm-sparc-change-pxd_huge-behavior-to-exclude-swap-entries-fix.patch
mm-gup-handle-hugepd-for-follow_page-fix.patch