hfsplus: remove superflous rootflags field in hfsplus_inode_info

The rootflags field in hfsplus_inode_info only caches the immutable and
append-only flags in the VFS inode, so we can easily get rid of it.
Signed-off-by: NChristoph Hellwig <hch@tuxera.com>

fs/hfsplus/catalog.c

@@ -77,7 +77,6 @@ static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
 		perms->rootflags |= HFSPLUS_FLG_APPEND;
 	else
 		perms->rootflags &= ~HFSPLUS_FLG_APPEND;
-	HFSPLUS_I(inode)->rootflags = perms->rootflags;
 	HFSPLUS_I(inode)->userflags = perms->userflags;
 	perms->mode = cpu_to_be16(inode->i_mode);
 	perms->owner = cpu_to_be32(inode->i_uid);

fs/hfsplus/hfsplus_fs.h

@@ -188,7 +188,7 @@ struct hfsplus_inode_info {
 	 * Protected by i_mutex.
 	 */
 	sector_t fs_blocks;
-	u8 rootflags, userflags;	/* BSD system and user file flags */
+	u8 userflags;		/* BSD user file flags */
 	struct list_head open_dir_list;
 	loff_t phys_size;
 

fs/hfsplus/inode.c

@@ -241,7 +241,6 @@ static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, i
 		mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
 	inode->i_mode = mode;
 
-	HFSPLUS_I(inode)->rootflags = perms->rootflags;
 	HFSPLUS_I(inode)->userflags = perms->userflags;
 	if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
 		inode->i_flags |= S_IMMUTABLE;

fs/hfsplus/ioctl.c

@@ -26,9 +26,9 @@ static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
 	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 	unsigned int flags = 0;
 
-	if (hip->rootflags & HFSPLUS_FLG_IMMUTABLE)
+	if (inode->i_flags & S_IMMUTABLE)
 		flags |= FS_IMMUTABLE_FL;
-	if (hip->rootflags & HFSPLUS_FLG_APPEND)
+	if (inode->i_flags |= S_APPEND)
 		flags |= FS_APPEND_FL;
 	if (hip->userflags & HFSPLUS_FLG_NODUMP)
 		flags |= FS_NODUMP_FL;
@@ -59,8 +59,8 @@ static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
 
 	mutex_lock(&inode->i_mutex);
 
-	if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
-	    hip->rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
+	if ((flags & (FS_IMMUTABLE_FL|FS_APPEND_FL)) ||
+	    inode->i_flags & (S_IMMUTABLE|S_APPEND)) {
 		if (!capable(CAP_LINUX_IMMUTABLE)) {
 			err = -EPERM;
 			goto out_unlock_inode;
@@ -72,20 +72,17 @@ static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
 		err = -EOPNOTSUPP;
 		goto out_unlock_inode;
 	}
-	if (flags & FS_IMMUTABLE_FL) {
+
+	if (flags & FS_IMMUTABLE_FL)
 		inode->i_flags |= S_IMMUTABLE;
-		hip->rootflags |= HFSPLUS_FLG_IMMUTABLE;
-	} else {
+	else
 		inode->i_flags &= ~S_IMMUTABLE;
-		hip->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
-	}
-	if (flags & FS_APPEND_FL) {
+
+	if (flags & FS_APPEND_FL)
 		inode->i_flags |= S_APPEND;
-		hip->rootflags |= HFSPLUS_FLG_APPEND;
-	} else {
+	else
 		inode->i_flags &= ~S_APPEND;
-		hip->rootflags &= ~HFSPLUS_FLG_APPEND;
-	}
+
 	if (flags & FS_NODUMP_FL)
 		hip->userflags |= HFSPLUS_FLG_NODUMP;
 	else