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Commit 367ea334 authored by Ryusuke Konishi's avatar Ryusuke Konishi
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nilfs2: split out nilfs_get_root_dentry 



This splits the code to allocate root dentry into a separate routine
for convenience in successive changes.

Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
parent dc3d3b81

fs/nilfs2/super.c

+35 −19
Original line number Diff line number Diff line
@@ -750,6 +750,39 @@ int nilfs_check_feature_compatibility(struct super_block *sb, 
	return 0;

}



static int nilfs_get_root_dentry(struct super_block *sb,

				 struct nilfs_root *root,

				 struct dentry **root_dentry)

{

	struct inode *inode;

	struct dentry *dentry;

	int ret = 0;



	inode = nilfs_iget(sb, root, NILFS_ROOT_INO);

	if (IS_ERR(inode)) {

		printk(KERN_ERR "NILFS: get root inode failed\n");

		ret = PTR_ERR(inode);

		goto out;

	}

	if (!S_ISDIR(inode->i_mode) || !inode->i_blocks || !inode->i_size) {

		iput(inode);

		printk(KERN_ERR "NILFS: corrupt root inode.\n");

		ret = -EINVAL;

		goto out;

	}



	dentry = d_alloc_root(inode);

	if (!dentry) {

		iput(inode);

		printk(KERN_ERR "NILFS: get root dentry failed\n");

		ret = -ENOMEM;

		goto out;

	}

	*root_dentry = dentry;

 out:

	return ret;

}



/**

 * nilfs_fill_super() - initialize a super block instance

 * @sb: super_block
@@ -766,7 +799,6 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent, 
{

	struct nilfs_sb_info *sbi;

	struct nilfs_root *fsroot;

	struct inode *root;

	__u64 cno;

	int err, curr_mnt;
@@ -850,25 +882,9 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent, 
			goto failed_checkpoint;

	}



	root = nilfs_iget(sb, fsroot, NILFS_ROOT_INO);

	if (IS_ERR(root)) {

		printk(KERN_ERR "NILFS: get root inode failed\n");

		err = PTR_ERR(root);

		goto failed_segctor;

	}

	if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {

		iput(root);

		printk(KERN_ERR "NILFS: corrupt root inode.\n");

		err = -EINVAL;

		goto failed_segctor;

	}

	sb->s_root = d_alloc_root(root);

	if (!sb->s_root) {

		iput(root);

		printk(KERN_ERR "NILFS: get root dentry failed\n");

		err = -ENOMEM;

	err = nilfs_get_root_dentry(sb, fsroot, &sb->s_root);

	if (err)

		goto failed_segctor;

	}



	nilfs_put_root(fsroot);