linux-kernel - [PATCH] mm: backing-dev: Remove duplicated macro definition

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Date:   Tue,  9 Feb 2021 17:19:22 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     akpm@...ux-foundation.org
Cc:     baolin.wang@...ux.alibaba.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm: backing-dev: Remove duplicated macro definition

Move the K() macro a little forward to remove the same macro definition.

Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
---
 mm/backing-dev.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 71a2bf4..576220a 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -33,6 +33,8 @@
 /* bdi_wq serves all asynchronous writeback tasks */
 struct workqueue_struct *bdi_wq;
 
+#define K(x) ((x) << (PAGE_SHIFT - 10))
+
 #ifdef CONFIG_DEBUG_FS
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
@@ -70,7 +72,6 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
 	global_dirty_limits(&background_thresh, &dirty_thresh);
 	wb_thresh = wb_calc_thresh(wb, dirty_thresh);
 
-#define K(x) ((x) << (PAGE_SHIFT - 10))
 	seq_printf(m,
 		   "BdiWriteback:       %10lu kB\n"
 		   "BdiReclaimable:     %10lu kB\n"
@@ -99,7 +100,6 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
 		   nr_more_io,
 		   nr_dirty_time,
 		   !list_empty(&bdi->bdi_list), bdi->wb.state);
-#undef K
 
 	return 0;
 }
@@ -147,8 +147,6 @@ static ssize_t read_ahead_kb_store(struct device *dev,
 	return count;
 }
 
-#define K(pages) ((pages) << (PAGE_SHIFT - 10))
-
 #define BDI_SHOW(name, expr)						\
 static ssize_t name##_show(struct device *dev,				\
 			   struct device_attribute *attr, char *buf)	\
-- 
1.8.3.1