+ mm-gup-pack-has_pinned-in-mmf_has_pinned-fix.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: fixup! mm: gup: pack has_pinned in MMF_HAS_PINNED
has been added to the -mm tree.  Its filename is
     mm-gup-pack-has_pinned-in-mmf_has_pinned-fix.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-gup-pack-has_pinned-in-mmf_has_pinned-fix.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-gup-pack-has_pinned-in-mmf_has_pinned-fix.patch

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------------------------------------------------------
From: Peter Xu <peterx@redhat.com>
Subject: fixup! mm: gup: pack has_pinned in MMF_HAS_PINNED

This fixes build issue with !CONFIG_MMU.

Link: https://lkml.kernel.org/r/YJqWESqyxa8OZA+2@t490s
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/gup.c |   22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

--- a/mm/gup.c~mm-gup-pack-has_pinned-in-mmf_has_pinned-fix
+++ a/mm/gup.c
@@ -392,6 +392,17 @@ void unpin_user_pages(struct page **page
 }
 EXPORT_SYMBOL(unpin_user_pages);
 
+/*
+ * Set the MMF_HAS_PINNED if not set yet; after set it'll be there for the mm's
+ * lifecycle.  Avoid setting the bit unless necessary, or it might cause write
+ * cache bouncing on large SMP machines for concurrent pinned gups.
+ */
+static inline void mm_set_has_pinned_flag(unsigned long *mm_flags)
+{
+	if (!test_bit(MMF_HAS_PINNED, mm_flags))
+		set_bit(MMF_HAS_PINNED, mm_flags);
+}
+
 #ifdef CONFIG_MMU
 static struct page *no_page_table(struct vm_area_struct *vma,
 		unsigned int flags)
@@ -1271,17 +1282,6 @@ retry:
 EXPORT_SYMBOL_GPL(fixup_user_fault);
 
 /*
- * Set the MMF_HAS_PINNED if not set yet; after set it'll be there for the mm's
- * lifecycle.  Avoid setting the bit unless necessary, or it might cause write
- * cache bouncing on large SMP machines for concurrent pinned gups.
- */
-static inline void mm_set_has_pinned_flag(unsigned long *mm_flags)
-{
-	if (!test_bit(MMF_HAS_PINNED, mm_flags))
-		set_bit(MMF_HAS_PINNED, mm_flags);
-}
-
-/*
  * Please note that this function, unlike __get_user_pages will not
  * return 0 for nr_pages > 0 without FOLL_NOWAIT
  */
_

Patches currently in -mm which might be from peterx@redhat.com are

mm-hugetlb-fix-f_seal_future_write.patch
mm-hugetlb-fix-cow-where-page-writtable-in-child.patch
mm-gup_benchmark-support-threading.patch
mm-gup-pack-has_pinned-in-mmf_has_pinned-fix.patch
userfaultfd-selftests-use-user-mode-only.patch
userfaultfd-selftests-remove-the-time-check-on-delayed-uffd.patch
userfaultfd-selftests-dropping-verify-check-in-locking_thread.patch
userfaultfd-selftests-only-dump-counts-if-mode-enabled.patch
userfaultfd-selftests-unify-error-handling.patch
mm-thp-simplify-copying-of-huge-zero-page-pmd-when-fork.patch
mm-userfaultfd-fix-uffd-wp-special-cases-for-fork.patch
mm-userfaultfd-fix-a-few-thp-pmd-missing-uffd-wp-bit.patch
mm-userfaultfd-fail-uffd-wp-registeration-if-not-supported.patch
mm-pagemap-export-uffd-wp-protection-information.patch
userfaultfd-selftests-add-pagemap-uffd-wp-test.patch