[PATCH 05/32] mm: Provide lru_to_last_page() to get last of a page list
David Howells
dhowells at redhat.com
Mon Jul 13 12:31:33 EDT 2020
Provide a macro, lru_to_last_page(), to find the last page in a page list
(the opposite of lru_to_page()).
Signed-off-by: David Howells <dhowells at redhat.com>
---
include/linux/mm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index dc7b87310c10..9692b9b58b06 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -216,6 +216,7 @@ int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *,
#define PAGE_ALIGNED(addr) IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
+#define lru_to_last_page(head) (list_entry((head)->next, struct page, lru))
/*
* Linux kernel virtual memory manager primitives.
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