On Wed, Nov 22, 2023 at 12:55:39PM +1100, Stephen Rothwell wrote: > index 06142ff7f9ce,bf2965b01b35..000000000000 > --- a/include/linux/pagemap.h > +++ b/include/linux/pagemap.h > @@@ -203,9 -203,8 +203,10 @@@ enum mapping_flags > /* writeback related tags are not used */ > AS_NO_WRITEBACK_TAGS = 5, > AS_LARGE_FOLIO_SUPPORT = 6, > - AS_RELEASE_ALWAYS, /* Call ->release_folio(), even if no private data */ > + AS_RELEASE_ALWAYS = 7, /* Call ->release_folio(), even if no private data */ > + AS_UNMOVABLE = 8, /* The mapping cannot be moved, ever */ > + AS_STABLE_WRITES, /* must wait for writeback before modifying > + folio contents */ > }; Note that AS_STABLE_WRITES, is a fix for 6.7, so this will probably end up getting reordered. It might also be worth to remove all the explicit number assignments here to make the merge conflict resolution a bit easier in the future.