mm: convert ksm_might_need_to_copy() to work on folios

Patch series "Finish two folio conversions".

Most callers of page_add_new_anon_rmap() and
lru_cache_add_inactive_or_unevictable() have been converted to their folio
equivalents, but there are still a few stragglers.  There's a bit of
preparatory work in ksm and unuse_pte(), but after that it's pretty
mechanical.


This patch (of 9):

Accept a folio as an argument and return a folio result.  Removes a call
to compound_head() in do_swap_page(), and prevents folio & page from
getting out of sync in unuse_pte().

Reviewed-by: David Hildenbrand <[email protected]>
[[email protected]: fix smatch warning]
  Link: https://lkml.kernel.org/r/[email protected]
[[email protected]: only adjust the page if the folio changed]
  Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: David Hildenbrand <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions