On Thu, 2019-10-17 at 22:08 -0700, Song Liu wrote:
> In collapse_file(), after locking the page, it is necessary to
> recheck
> that the page is up-to-date, clean, and pointing to the proper
> mapping.
> If any check fails, abort the collapse.
>
> Fixes: 99cb0dbd47a1 ("mm,thp: add read-only THP support for (non-
> shmem) FS")
> Cc: Kirill A. Shutemov <[email protected]>
> Cc: Johannes Weiner <[email protected]>
> Cc: Hugh Dickins <[email protected]>
> Cc: William Kucharski <[email protected]>
> Cc: Andrew Morton <[email protected]>
> Signed-off-by: Song Liu <[email protected]>
Acked-by: Rik van Riel <[email protected]>
