[PATCH v2 1/7] ext4: convert EXT4_FLAGS_* defines to enum

[libaokun]

From: Baokun Li <libaokun1@xxxxxxxxxx>

Do away with the defines and use an enum as it's cleaner.

Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
---
 fs/ext4/ext4.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 550d21ddba8c..4491e82cfa6f 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2233,9 +2233,11 @@ extern int ext4_feature_set_ok(struct super_block *sb, int readonly);
 /*
  * Superblock flags
  */
-#define EXT4_FLAGS_RESIZING	0
-#define EXT4_FLAGS_SHUTDOWN	1
-#define EXT4_FLAGS_BDEV_IS_DAX	2
+enum {
+	EXT4_FLAGS_RESIZING,	/* Avoid superblock update and resize race */
+	EXT4_FLAGS_SHUTDOWN,	/* Prevent access to the file system */
+	EXT4_FLAGS_BDEV_IS_DAX,	/* Current block device support DAX */
+};
 
 static inline int ext4_forced_shutdown(struct super_block *sb)
 {
-- 
2.39.2