linux-kernel - Re: [PATCH] bad_inode: add missing i_op initializers for fileattr_get/

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Message-ID: <20220125164851.m2p3glqlsdpnvdjg@riteshh-domain>
Date:   Tue, 25 Jan 2022 22:18:51 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Miklos Szeredi <mszeredi@...hat.com>
Subject: Re: [PATCH] bad_inode: add missing i_op initializers for
 fileattr_get/_set

Gentle Ping!!

On 22/01/12 09:20PM, Ritesh Harjani wrote:
> Let's bring inode_operations in sync for bad_inode_ops.
> Some of the reasons are listed here [1]. But mostly it is
> just for completeness sake I think.
>
> This patch also removes some of the whitespaces at the end of line
> which is due to my editor config settings for kernel work.
>
> [1]: https://lore.kernel.org/lkml/1473708559-12714-2-git-send-email-mszeredi@redhat.com/
>
> Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com>
> ---
>  fs/bad_inode.c | 30 +++++++++++++++++++++---------
>  1 file changed, 21 insertions(+), 9 deletions(-)
>
> diff --git a/fs/bad_inode.c b/fs/bad_inode.c
> index 12b8fdcc445b..08d5e44316cc 100644
> --- a/fs/bad_inode.c
> +++ b/fs/bad_inode.c
> @@ -160,6 +160,17 @@ static int bad_inode_set_acl(struct user_namespace *mnt_userns,
>  	return -EIO;
>  }
>
> +static int bad_inode_fileattr_set(struct user_namespace *mnt_userns,
> +			struct dentry *dentry, struct fileattr *fa)
> +{
> +	return -EIO;
> +}
> +
> +static int bad_inode_fileattr_get(struct dentry *dentry, struct fileattr *fa)
> +{
> +	return -EIO;
> +}
> +
>  static const struct inode_operations bad_inode_ops =
>  {
>  	.create		= bad_inode_create,
> @@ -183,18 +194,19 @@ static const struct inode_operations bad_inode_ops =
>  	.atomic_open	= bad_inode_atomic_open,
>  	.tmpfile	= bad_inode_tmpfile,
>  	.set_acl	= bad_inode_set_acl,
> +	.fileattr_set	= bad_inode_fileattr_set,
> +	.fileattr_get	= bad_inode_fileattr_get,
>  };
>
> -
>  /*
>   * When a filesystem is unable to read an inode due to an I/O error in
>   * its read_inode() function, it can call make_bad_inode() to return a
> - * set of stubs which will return EIO errors as required.
> + * set of stubs which will return EIO errors as required.
>   *
>   * We only need to do limited initialisation: all other fields are
>   * preinitialised to zero automatically.
>   */
> -
> +
>  /**
>   *	make_bad_inode - mark an inode bad due to an I/O error
>   *	@inode: Inode to mark bad
> @@ -203,7 +215,7 @@ static const struct inode_operations bad_inode_ops =
>   *	failure this function makes the inode "bad" and causes I/O operations
>   *	on it to fail from this point on.
>   */
> -
> +
>  void make_bad_inode(struct inode *inode)
>  {
>  	remove_inode_hash(inode);
> @@ -211,9 +223,9 @@ void make_bad_inode(struct inode *inode)
>  	inode->i_mode = S_IFREG;
>  	inode->i_atime = inode->i_mtime = inode->i_ctime =
>  		current_time(inode);
> -	inode->i_op = &bad_inode_ops;
> +	inode->i_op = &bad_inode_ops;
>  	inode->i_opflags &= ~IOP_XATTR;
> -	inode->i_fop = &bad_file_ops;
> +	inode->i_fop = &bad_file_ops;
>  }
>  EXPORT_SYMBOL(make_bad_inode);
>
> @@ -222,17 +234,17 @@ EXPORT_SYMBOL(make_bad_inode);
>   * &bad_inode_ops to cover the case of invalidated inodes as well as
>   * those created by make_bad_inode() above.
>   */
> -
> +
>  /**
>   *	is_bad_inode - is an inode errored
>   *	@inode: inode to test
>   *
>   *	Returns true if the inode in question has been marked as bad.
>   */
> -
> +
>  bool is_bad_inode(struct inode *inode)
>  {
> -	return (inode->i_op == &bad_inode_ops);
> +	return (inode->i_op == &bad_inode_ops);
>  }
>
>  EXPORT_SYMBOL(is_bad_inode);
> --
> 2.31.1
>