mm: fix wrong comments about anon_vma lock

We use rwsem since commit 5a505085f043 ("mm/rmap: Convert the struct
anon_vma::mutex to an rwsem").  And most of comments are converted to
the new rwsem lock; while just 2 more missed from:

	 $ git grep 'anon_vma->mutex'

Signed-off-by: Yuanhan Liu <>
Acked-by: Ingo Molnar <>
Cc: Mel Gorman <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
2 files changed