sysfs: Move all of inode initialization into sysfs_init_inode

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

fs/sysfs/dir.c

@@ -748,24 +748,12 @@ int sysfs_create_dir(struct kobject * kobj)
 	return error;
 }
 
-static int sysfs_count_nlink(struct sysfs_dirent *sd)
-{
-	struct sysfs_dirent *child;
-	int nr = 0;
-
-	for (child = sd->s_children; child; child = child->s_sibling)
-		if (sysfs_type(child) == SYSFS_DIR)
-			nr++;
-	return nr + 2;
-}
-
 static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 				struct nameidata *nd)
 {
 	struct dentry *ret = NULL;
 	struct sysfs_dirent *parent_sd = dentry->d_parent->d_fsdata;
 	struct sysfs_dirent *sd;
-	struct bin_attribute *bin_attr;
 	struct inode *inode;
 
 	mutex_lock(&sysfs_mutex);
@@ -785,31 +773,6 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 		goto out_unlock;
 	}
 
-	if (inode->i_state & I_NEW) {
-		/* initialize inode according to type */
-		switch (sysfs_type(sd)) {
-		case SYSFS_DIR:
-			inode->i_op = &sysfs_dir_inode_operations;
-			inode->i_fop = &sysfs_dir_operations;
-			inode->i_nlink = sysfs_count_nlink(sd);
-			break;
-		case SYSFS_KOBJ_ATTR:
-			inode->i_size = PAGE_SIZE;
-			inode->i_fop = &sysfs_file_operations;
-			break;
-		case SYSFS_KOBJ_BIN_ATTR:
-			bin_attr = sd->s_elem.bin_attr.bin_attr;
-			inode->i_size = bin_attr->size;
-			inode->i_fop = &bin_fops;
-			break;
-		case SYSFS_KOBJ_LINK:
-			inode->i_op = &sysfs_symlink_inode_operations;
-			break;
-		default:
-			BUG();
-		}
-	}
-
 	sysfs_instantiate(dentry, inode);
 	sysfs_attach_dentry(sd, dentry);
 

fs/sysfs/inode.c

@@ -122,8 +122,22 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr)
  */
 static struct lock_class_key sysfs_inode_imutex_key;
 
+static int sysfs_count_nlink(struct sysfs_dirent *sd)
+{
+	struct sysfs_dirent *child;
+	int nr = 0;
+
+	for (child = sd->s_children; child; child = child->s_sibling)
+		if (sysfs_type(child) == SYSFS_DIR)
+			nr++;
+
+	return nr + 2;
+}
+
 static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
 {
+	struct bin_attribute *bin_attr;
+
 	inode->i_blocks = 0;
 	inode->i_mapping->a_ops = &sysfs_aops;
 	inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info;
@@ -139,6 +153,37 @@ static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
 		set_inode_attr(inode, sd->s_iattr);
 	} else
 		set_default_inode_attr(inode, sd->s_mode);
+
+
+	/* initialize inode according to type */
+	switch (sysfs_type(sd)) {
+	case SYSFS_ROOT:
+		inode->i_op = &sysfs_dir_inode_operations;
+		inode->i_fop = &sysfs_dir_operations;
+		inc_nlink(inode); /* directory, account for "." */
+		break;
+	case SYSFS_DIR:
+		inode->i_op = &sysfs_dir_inode_operations;
+		inode->i_fop = &sysfs_dir_operations;
+		inode->i_nlink = sysfs_count_nlink(sd);
+		break;
+	case SYSFS_KOBJ_ATTR:
+		inode->i_size = PAGE_SIZE;
+		inode->i_fop = &sysfs_file_operations;
+		break;
+	case SYSFS_KOBJ_BIN_ATTR:
+		bin_attr = sd->s_elem.bin_attr.bin_attr;
+		inode->i_size = bin_attr->size;
+		inode->i_fop = &bin_fops;
+		break;
+	case SYSFS_KOBJ_LINK:
+		inode->i_op = &sysfs_symlink_inode_operations;
+		break;
+	default:
+		BUG();
+	}
+
+	unlock_new_inode(inode);
 }
 
 /**
@@ -180,9 +225,6 @@ void sysfs_instantiate(struct dentry *dentry, struct inode *inode)
 {
 	BUG_ON(!dentry || dentry->d_inode);
 
-	if (inode->i_state & I_NEW)
-		unlock_new_inode(inode);
-
 	d_instantiate(dentry, inode);
 }
 

fs/sysfs/mount.c

@@ -49,11 +49,6 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
 		return -ENOMEM;
 	}
 
-	inode->i_op = &sysfs_dir_inode_operations;
-	inode->i_fop = &sysfs_dir_operations;
-	inc_nlink(inode); /* directory, account for "." */
-	unlock_new_inode(inode);
-
 	/* instantiate and link root dentry */
 	root = d_alloc_root(inode);
 	if (!root) {