linux-kernel - Re: [PATCH] eCryptfs: Fix dentry handling on create error, unlink, and inode destroy

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Message-Id: <20080107214517.ebf5a5bd.akpm@linux-foundation.org>
Date:	Mon, 7 Jan 2008 21:45:17 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Michael Halcrow <mhalcrow@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, shaggy@...ibm.com,
	sandeen@...hat.com, jmoyer@...hat.com
Subject: Re: [PATCH] eCryptfs: Fix dentry handling on create error, unlink,
 and inode destroy

On Mon, 7 Jan 2008 23:25:42 -0600 Michael Halcrow <mhalcrow@...ibm.com> wrote:

> --- a/fs/ecryptfs/inode.c
> +++ b/fs/ecryptfs/inode.c
> @@ -120,22 +120,9 @@ ecryptfs_do_create(struct inode *directory_inode,
>  	rc = ecryptfs_create_underlying_file(lower_dir_dentry->d_inode,
>  					     ecryptfs_dentry, mode, nd);
>  	if (rc) {
> -		struct inode *ecryptfs_inode = ecryptfs_dentry->d_inode;
> -		struct ecryptfs_inode_info *inode_info =
> -			ecryptfs_inode_to_private(ecryptfs_inode);
> -
> -		printk(KERN_WARNING "%s: Error creating underlying file; "
> -		       "rc = [%d]; checking for existing\n", __FUNCTION__, rc);
> -		if (inode_info) {
> -			mutex_lock(&inode_info->lower_file_mutex);
> -			if (!inode_info->lower_file) {
> -				mutex_unlock(&inode_info->lower_file_mutex);
> -				printk(KERN_ERR "%s: Failure to set underlying "
> -				       "file; rc = [%d]\n", __FUNCTION__, rc);
> -				goto out_lock;
> -			}
> -			mutex_unlock(&inode_info->lower_file_mutex);
> -		}
> +		printk(KERN_ERR "%s: Failure to create dentry in lower fs; "
> +		       "rc = [%d]\n", __FUNCTION__, rc);
> +		goto out_lock;
>  	}
>  	rc = ecryptfs_interpose(lower_dentry, ecryptfs_dentry,
>  				directory_inode->i_sb, 0);

Will this cause an undesirable log storm if the underlying fs runs out of
space?
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