From: Randy Dunlap <[email protected]>

Fix build warnings in f2fs when CONFIG_PROC_FS is not enabled
by marking the unused functions as __maybe_unused.

../fs/f2fs/sysfs.c:519:12: warning: 'segment_info_seq_show' defined but not 
used [-Wunused-function]
../fs/f2fs/sysfs.c:546:12: warning: 'segment_bits_seq_show' defined but not 
used [-Wunused-function]
../fs/f2fs/sysfs.c:570:12: warning: 'iostat_info_seq_show' defined but not used 
[-Wunused-function]

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Jaegeuk Kim <[email protected]>
Cc: Chao Yu <[email protected]>
Cc: [email protected]
---
 fs/f2fs/sysfs.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

--- linux-next-20180706.orig/fs/f2fs/sysfs.c
+++ linux-next-20180706/fs/f2fs/sysfs.c
@@ -9,6 +9,7 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/compiler.h>
 #include <linux/proc_fs.h>
 #include <linux/f2fs_fs.h>
 #include <linux/seq_file.h>
@@ -516,7 +517,8 @@ static struct kobject f2fs_feat = {
        .kset   = &f2fs_kset,
 };
 
-static int segment_info_seq_show(struct seq_file *seq, void *offset)
+static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
+                                               void *offset)
 {
        struct super_block *sb = seq->private;
        struct f2fs_sb_info *sbi = F2FS_SB(sb);
@@ -543,7 +545,8 @@ static int segment_info_seq_show(struct
        return 0;
 }
 
-static int segment_bits_seq_show(struct seq_file *seq, void *offset)
+static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
+                                               void *offset)
 {
        struct super_block *sb = seq->private;
        struct f2fs_sb_info *sbi = F2FS_SB(sb);
@@ -567,7 +570,8 @@ static int segment_bits_seq_show(struct
        return 0;
 }
 
-static int iostat_info_seq_show(struct seq_file *seq, void *offset)
+static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
+                                              void *offset)
 {
        struct super_block *sb = seq->private;
        struct f2fs_sb_info *sbi = F2FS_SB(sb);


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