mm: remove SWAP_[SUCCESS|AGAIN|FAIL]

There is no user for it. Remove it. [[email protected]: use false instead of SWAP_FAIL] Link: http://lkml.kernel.org/r/20170316053313.GA19241@bbox Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Minchan Kim <[email protected]> Cc: Anshuman Khandual <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Naoya Horiguchi <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Sergey Senozhatsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
thoughtpolice · May 3, 2017 · 83612a9 · 83612a9
1 parent e4b8222
commit 83612a9
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Showing 2 changed files with 1 addition and 8 deletions.
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
@@ -295,11 +295,4 @@ static inline int page_mkclean(struct page *page)
 
 #endif	/* CONFIG_MMU */
 
-/*
- * Return values of try_to_unmap
- */
-#define SWAP_SUCCESS	0
-#define SWAP_AGAIN	1
-#define SWAP_FAIL	2
-
 #endif	/* _LINUX_RMAP_H */
diff --git a/mm/rmap.c b/mm/rmap.c
@@ -1419,7 +1419,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
 			 */
 			if (unlikely(PageSwapBacked(page) != PageSwapCache(page))) {
 				WARN_ON_ONCE(1);
-				ret = SWAP_FAIL;
+				ret = false;
 				page_vma_mapped_walk_done(&pvmw);
 				break;
 			}