ext4: rename s_resize_flags to s_ext4_flags

We are currently using one bit in s_resize_flags; rename it in order
to allow more of the bits in that unsigned long for other purposes.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/ext4.h

@@ -1399,8 +1399,7 @@ struct ext4_sb_info {
 	struct journal_s *s_journal;
 	struct list_head s_orphan;
 	struct mutex s_orphan_lock;
-	unsigned long s_resize_flags;		/* Flags indicating if there
-						   is a resizer */
+	unsigned long s_ext4_flags;		/* Ext4 superblock flags */
 	unsigned long s_commit_interval;
 	u32 s_max_batch_time;
 	u32 s_min_batch_time;
@@ -1833,6 +1832,12 @@ static inline bool ext4_has_incompat_features(struct super_block *sb)
 	return (EXT4_SB(sb)->s_es->s_feature_incompat != 0);
 }
 
+/*
+ * Superblock flags
+ */
+#define EXT4_FLAGS_RESIZING	0
+
+
 /*
  * Default values for user and/or group using reserved blocks
  */
@@ -3217,7 +3222,6 @@ static inline void ext4_inode_resume_unlocked_dio(struct inode *inode)
 					    EXT4_WQ_HASH_SZ])
 extern wait_queue_head_t ext4__ioend_wq[EXT4_WQ_HASH_SZ];
 
-#define EXT4_RESIZING	0
 extern int ext4_resize_begin(struct super_block *sb);
 extern void ext4_resize_end(struct super_block *sb);
 

fs/ext4/resize.c

@@ -45,7 +45,8 @@ int ext4_resize_begin(struct super_block *sb)
 		return -EPERM;
 	}
 
-	if (test_and_set_bit_lock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags))
+	if (test_and_set_bit_lock(EXT4_FLAGS_RESIZING,
+				  &EXT4_SB(sb)->s_ext4_flags))
 		ret = -EBUSY;
 
 	return ret;
@@ -53,7 +54,7 @@ int ext4_resize_begin(struct super_block *sb)
 
 void ext4_resize_end(struct super_block *sb)
 {
-	clear_bit_unlock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags);
+	clear_bit_unlock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags);
 	smp_mb__after_atomic();
 }