[008/166] mm/vma: replace all remaining open encodings with vma_is_anonymous()

Commit Message

Andrew Morton April 7, 2020, 3:03 a.m. UTC

From: Anshuman Khandual <[e-mail]>
Subject: mm/vma: replace all remaining open encodings with vma_is_anonymous()

This replaces all remaining open encodings with vma_is_anonymous().

Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Anshuman Khandual <[e-mail]>
Acked-by: Vlastimil Babka <[e-mail]
Cc: Alexander Viro <[e-mail]>
Cc: Andy Lutomirski <[e-mail]>
Cc: "Aneesh Kumar K.V" <[e-mail]>
Cc: Arnaldo Carvalho de Melo <[e-mail]>
Cc: Arnd Bergmann <[e-mail]>
Cc: Benjamin Herrenschmidt <[e-mail]>
Cc: Dave Hansen <[e-mail]>
Cc: Geert Uytterhoeven <[e-mail]>
Cc: Guo Ren <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Mel Gorman <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Nick Piggin <[e-mail]>
Cc: Paul Burton <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Ralf Baechle <[e-mail]>
Cc: Rich Felker <[e-mail]>
Cc: Steven Rostedt <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Will Deacon <[e-mail]>
Cc: Yoshinori Sato <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/gup.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch

--- a/mm/gup.c~mm-vma-replace-all-remaining-open-encodings-with-vma_is_anonymous
+++ a/mm/gup.c
@@ -351,7 +351,8 @@  static struct page *no_page_table(struct
 	 * But we can only make this optimization where a hole would surely
 	 * be zero-filled if handle_mm_fault() actually did handle it.
 	 */
-	if ((flags & FOLL_DUMP) && (!vma->vm_ops || !vma->vm_ops->fault))
+	if ((flags & FOLL_DUMP) &&
+			(vma_is_anonymous(vma) || !vma->vm_ops->fault))
 		return ERR_PTR(-EFAULT);
 	return NULL;
 }