Hi!
On Fri, Oct 4, 2024 at 6:51 PM Marek Szyprowski
<m.szyprowski@xxxxxxxxxxx> wrote:
> This patch landed in today's linux-next as commit 46c1b3279220
> ("mm/mremap: prevent racing change of old pmd type"). In my tests I
> found that it introduces a lockdep warning about possible circular
> locking dependency on ARM64 machines. Reverting $subject together with
> commits a2fbe16f45a8 ("mm: mremap: move_ptes() use
> pte_offset_map_rw_nolock()") and 46c1b3279220 ("mm/mremap: prevent
> racing change of old pmd type") on top of next-20241004 fixes this problem.
Thanks for the report; that patch has now been removed, and a
different approach
(https://lore.kernel.org/all/20241007-move_normal_pmd-vs-collapse-fix-2-v1-1-5ead9631f2ea@xxxxxxxxxx/)
will probably be used instead.
