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authorVishal Moola (Oracle) <vishal.moola@gmail.com>2023-01-31 00:43:50 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-02-14 02:54:31 +0300
commitda707a6d184a8a6ef0b756c3ba49888fec223793 (patch)
treed196661949ae0c9ee66743a65ed1aeba030c0a0e /include
parent3c1ea2c729ef8ef07bcb80d01ab2ead45b3406dd (diff)
downloadlinux-da707a6d184a8a6ef0b756c3ba49888fec223793.tar.xz
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/migrate.h9
1 files changed, 9 insertions, 0 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));