Re: [PATCH] bad_inode: add missing i_op initializers for fileattr_get/_set

From: Ritesh Harjani
Date: Tue Jan 25 2022 - 11:52:19 EST


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@xxxxxxxxxx/
>
> Signed-off-by: Ritesh Harjani <riteshh@xxxxxxxxxxxxx>
> ---
> 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
>