[044/118] mm/rmap: correct obsolete comment of page_get_anon_vma()

Commit Message

Andrew Morton Feb. 26, 2021, 1:18 a.m. UTC

From: Miaohe Lin <[e-mail]>
Subject: mm/rmap: correct obsolete comment of page_get_anon_vma()

Since commit 746b18d421da ("mm: use refcounts for page_lock_anon_vma()"),
page_lock_anon_vma() is renamed to page_get_anon_vma() and converted to
return a refcount increased anon_vma.  But it forgot to change the
relevant comment.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Miaohe Lin <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/rmap.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

--- a/mm/rmap.c~mm-rmap-correct-obsolete-comment-of-page_get_anon_vma
+++ a/mm/rmap.c
@@ -462,8 +462,8 @@  void __init anon_vma_init(void)
  * Getting a lock on a stable anon_vma from a page off the LRU is tricky!
  *
  * Since there is no serialization what so ever against page_remove_rmap()
- * the best this function can do is return a locked anon_vma that might
- * have been relevant to this page.
+ * the best this function can do is return a refcount increased anon_vma
+ * that might have been relevant to this page.
  *
  * The page might have been remapped to a different anon_vma or the anon_vma
  * returned may already be freed (and even reused).