diff options
| author | Shivank Garg <shivankg@amd.com> | 2026-07-01 05:17:22 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-07-28 21:11:53 -0700 |
| commit | 3dd5a633a0941eb818d4647e1f904252ca028dc6 (patch) | |
| tree | 275815be1500a42e8c3932223cd38c81f88e1e69 /include/linux | |
| parent | 8d7625771506a34866d594f8b59e32503d2fc4d0 (diff) | |
mm/migrate: use migrate_info field instead of private
Add an unsigned long migrate_info member to the struct folio union and use
it to store migration state (anon_vma pointer and FOLIO_WAS_* markers)
instead of using folio->private. While at it, switch to bitwise OR.
No functional change.
[rdunlap@infradead.org: add missing kernel-doc for @migrate_info]
Link: https://lore.kernel.org/20260717022146.1290242-1-rdunlap@infradead.org
Link: https://lore.kernel.org/20260701-migrate-cleanups-prep-v2-3-d9e8f17130b1@amd.com
Signed-off-by: Shivank Garg <shivankg@amd.com>
Suggested-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Huang Ying <ying.huang@linux.alibaba.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Matthew 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: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm_types.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index b18c2b2e7d2c..939b5ea8c9e0 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -368,6 +368,8 @@ typedef unsigned short mm_id_t; * dax_associate_entry. * @private: Filesystem per-folio data (see folio_attach_private()). * @swap: Used for swp_entry_t if folio_test_swapcache(). + * @migrate_info: Stores migration state (anon_vma pointer and + * FOLIO_WAS_* markers). * @_mapcount: Do not access this member directly. Use folio_mapcount() to * find out how many times this folio is mapped by userspace. * @_refcount: Do not access this member directly. Use folio_ref_count() @@ -427,6 +429,7 @@ struct folio { union { void *private; swp_entry_t swap; + unsigned long migrate_info; }; atomic_t _mapcount; atomic_t _refcount; |