f2fs: introduce F2FS_QUOTA_DEFAULT_FL for cleanup

This patch adds F2FS_QUOTA_DEFAULT_FL to include two default flags:
F2FS_NOATIME_FL and F2FS_IMMUTABLE_FL, and use it to clean up codes.
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/f2fs.h

@@ -2960,6 +2960,8 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
 #define F2FS_PROJINHERIT_FL		0x20000000 /* Create with parents projid */
 #define F2FS_CASEFOLD_FL		0x40000000 /* Casefolded file */
 
+#define F2FS_QUOTA_DEFAULT_FL		(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL)
+
 /* Flags that should be inherited by new inodes from their parent. */
 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
 			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \

fs/f2fs/super.c

@@ -2768,7 +2768,7 @@ static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
 {
 	struct inode *qf_inode;
 	unsigned long qf_inum;
-	unsigned long qf_flag = F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
+	unsigned long qf_flag = F2FS_QUOTA_DEFAULT_FL;
 	int err;
 
 	BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
@@ -2945,7 +2945,7 @@ static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
 		return err;
 
 	inode_lock(inode);
-	F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
+	F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL;
 	f2fs_set_inode_flags(inode);
 	inode_unlock(inode);
 	f2fs_mark_inode_dirty_sync(inode, false);
@@ -2970,7 +2970,7 @@ static int __f2fs_quota_off(struct super_block *sb, int type)
 		goto out_put;
 
 	inode_lock(inode);
-	F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
+	F2FS_I(inode)->i_flags &= ~F2FS_QUOTA_DEFAULT_FL;
 	f2fs_set_inode_flags(inode);
 	inode_unlock(inode);
 	f2fs_mark_inode_dirty_sync(inode, false);