Messages in this thread | | | Date | Mon, 29 Jan 2018 14:35:22 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH 1/3] mm, numa: rework do_pages_move |
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On Mon, 29 Jan 2018 17:06:14 -0500 "Zi Yan" <zi.yan@cs.rutgers.edu> wrote:
> I discover that this patch does not hold mmap_sem while migrating pages in > do_move_pages_to_node(). > > A simple fix below moves mmap_sem from add_page_for_migration() > to the outmost do_pages_move():
I'm not surprised. Why does do_move_pages_to_node() need mmap_sem and how is a reader to discover that fact???
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