On 03/15/2017 06:24 AM, Minchan Kim wrote: > try_to_munlock returns SWAP_MLOCK if the one of VMAs mapped > the page has VM_LOCKED flag. In that time, VM set PG_mlocked to > the page if the page is not pte-mapped THP which cannot be > mlocked, either. > > With that, __munlock_isolated_page can use PageMlocked to check > whether try_to_munlock is successful or not without relying on > try_to_munlock's retval. It helps to make try_to_unmap/try_to_unmap_one > simple with upcoming patches. > > Cc: Vlastimil Babka <[email protected]> > Acked-by: Kirill A. Shutemov <[email protected]> > Signed-off-by: Minchan Kim <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
