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| author | Huang Ying <ying.huang@intel.com> | 2023-02-13 20:34:39 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-16 20:43:53 -0800 |
| commit | 64c8902ed4418317cd416c566f896bd4a92b2efc (patch) | |
| tree | 28eae3fab3d5b329cae0f03184c6085b95a9ea8c /include | |
| parent | 42012e0436d44aeb2e68f11a28ddd0ad3f38b61f (diff) | |
| download | lwn-64c8902ed4418317cd416c566f896bd4a92b2efc.tar.gz lwn-64c8902ed4418317cd416c566f896bd4a92b2efc.zip | |
migrate_pages: split unmap_and_move() to _unmap() and _move()
This is a preparation patch to batch the folio unmapping and moving.
In this patch, unmap_and_move() is split to migrate_folio_unmap() and
migrate_folio_move(). So, we can batch _unmap() and _move() in different
loops later. To pass some information between unmap and move, the
original unused dst->mapping and dst->private are used.
Link: https://lkml.kernel.org/r/20230213123444.155149-5-ying.huang@intel.com
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Xin Hao <xhao@linux.alibaba.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Bharata B Rao <bharata@amd.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/migrate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h index bdff950a8bb4..c88b96b48be7 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -18,6 +18,7 @@ struct migration_target_control; * - zero on page migration success; */ #define MIGRATEPAGE_SUCCESS 0 +#define MIGRATEPAGE_UNMAP 1 /** * struct movable_operations - Driver page migration |