mm: handle write faults to RO pages under the VMA lock

mainline inclusion
from mainline-v6.7-rc1
commit 4a68fef16df9d88d528094116f8bbd2dbfa62089
category: other
bugzilla: https://gitee.com/openeuler/kernel/issues/I8K7C7

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4a68fef16df9d88d528094116f8bbd2dbfa62089

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I think this is a pretty rare occurrence, but for consistency handle
faults with the VMA lock held the same way that we handle other faults
with the VMA lock held.

Link: https://lkml.kernel.org/r/20231006195318.4087158-7-willy@infradead.org


Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>