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| author | Vishal Moola (Oracle) <vishal.moola@gmail.com> | 2023-01-30 22:43:50 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-14 00:54:31 +0100 |
| commit | da707a6d184a8a6ef0b756c3ba49888fec223793 (patch) | |
| tree | d196661949ae0c9ee66743a65ed1aeba030c0a0e | |
| parent | mm: add folio_get_nontail_page() (diff) | |
| download | linux-da707a6d184a8a6ef0b756c3ba49888fec223793.tar.xz linux-da707a6d184a8a6ef0b756c3ba49888fec223793.zip | |
mm/migrate: add folio_movable_ops()
folio_movable_ops() does the same as page_movable_ops() except uses folios
instead of pages. This function will help make folio conversions in
migrate.c more readable.
Link: https://lkml.kernel.org/r/20230130214352.40538-3-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | include/linux/migrate.h | 9 | ||||
| -rw-r--r-- | mm/migrate.c | 2 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3ef77f52a4f0..bdff950a8bb4 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -123,6 +123,15 @@ static inline bool folio_test_movable(struct folio *folio) } static inline +const struct movable_operations *folio_movable_ops(struct folio *folio) +{ + VM_BUG_ON(!__folio_test_movable(folio)); + + return (const struct movable_operations *) + ((unsigned long)folio->mapping - PAGE_MAPPING_MOVABLE); +} + +static inline const struct movable_operations *page_movable_ops(struct page *page) { VM_BUG_ON(!__PageMovable(page)); diff --git a/mm/migrate.c b/mm/migrate.c index c09872cf41b7..d2b1167329b9 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -990,7 +990,7 @@ static int move_to_new_folio(struct folio *dst, struct folio *src, goto out; } - mops = page_movable_ops(&src->page); + mops = folio_movable_ops(src); rc = mops->migrate_page(&dst->page, &src->page, mode); WARN_ON_ONCE(rc == MIGRATEPAGE_SUCCESS && !folio_test_isolated(src)); |