mm: remove boolean output parameters from folio_pte_batch_ext()

Instead, let's just allow for specifying through flags whether we want to
have bits merged into the original PTE.

For the madvise() case, simplify by having only a single parameter for
merging young+dirty.  For madvise_cold_or_pageout_pte_range() merging the
dirty bit is not required, but also not harmful.  This code is not that
performance critical after all to really force all micro-optimizations.

As we now have two pte_t * parameters, use PageTable() to make sure we are
actually given a pointer at a copy of the PTE, not a pointer into an
actual page table.

Link: https://lkml.kernel.org/r/20250702104926.212243-5-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mathew Brost <matthew.brost@intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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