writeback: move MIN_WRITEBACK_PAGES to fs-writeback.c

Fix compile error

 fs/fs-writeback.c:515:33: error: ‘PAGE_CACHE_SHIFT’ undeclared (first use in this function)

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index b30419cd425e..4e0a55493023 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -25,11 +25,6 @@ DECLARE_PER_CPU(int, dirty_throttle_leaks);
 #define DIRTY_SCOPE             8
 #define DIRTY_FULL_SCOPE        (DIRTY_SCOPE / 2)
 
-/*
- * 4MB minimal write chunk size
- */
-#define MIN_WRITEBACK_PAGES     (4096UL >> (PAGE_CACHE_SHIFT - 10))
-
 struct backing_dev_info;
 
 /*