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mm/rmap: correct obsolete comment of page_get_anon_vma()

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Since commit 746b18d421 ("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/20210203093215.31990-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2021-02-25 17:18:06 -08:00 committed by Linus Torvalds
parent b7e188ec98
commit ad8a20cf6d
1 changed files with 2 additions and 2 deletions
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4
mm/rmap.c
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@ -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! * 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() * 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 * the best this function can do is return a refcount increased anon_vma
* have been relevant to this page. * that might have been relevant to this page.
* *
* The page might have been remapped to a different anon_vma or the anon_vma * The page might have been remapped to a different anon_vma or the anon_vma
* returned may already be freed (and even reused). * returned may already be freed (and even reused).