linux-ext4 - Re: [RFC] errno.h: Provide EFSCORRUPTED for everybody

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Message-ID: <20191031030449.GV15222@magnolia>
Date:   Wed, 30 Oct 2019 20:04:49 -0700
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     Valdis Kletnieks <valdis.kletnieks@...edu>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Gao Xiang <xiang@...nel.org>, Chao Yu <chao@...nel.org>,
        "Theodore Ts'o" <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Jaegeuk Kim <jaegeuk@...nel.org>, linux-xfs@...r.kernel.org,
        Jan Kara <jack@...e.com>, Arnd Bergmann <arnd@...db.de>,
        linux-fsdevel@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, linux-erofs@...ts.ozlabs.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-arch@...r.kernel.org
Subject: Re: [RFC] errno.h: Provide EFSCORRUPTED for everybody

On Wed, Oct 30, 2019 at 09:07:33PM -0400, Valdis Kletnieks wrote:
> Three questions: (a) ACK/NAK on this patch,

Acked-by: Darrick J. Wong <darrick.wong@...cle.com>

> (b) should it be all in one patch, or one to add to errno.h and 6
> patches for 6 filesystems?), and

I don't particularly care, but I've a slight preference for changing it
all at once so that it's obvious as a move.

> (c) if one patch, who gets to shepherd it through?

Heh. :)

I would add (d) can we do the same to EFSBADCRC, seeing as f2fs,
ext4, xfs, and jbd2 all define it the same way?

--D

> There's currently 6 filesystems that have the same #define. Move it
> into errno.h so it's defined in just one place.
> 
> Signed-off-by: Valdis Kletnieks <Valdis.Kletnieks@...edu>
> ---
>  drivers/staging/exfat/exfat.h    | 2 --
>  fs/erofs/internal.h              | 2 --
>  fs/ext4/ext4.h                   | 1 -
>  fs/f2fs/f2fs.h                   | 1 -
>  fs/xfs/xfs_linux.h               | 1 -
>  include/linux/jbd2.h             | 1 -
>  include/uapi/asm-generic/errno.h | 1 +
>  7 files changed, 1 insertion(+), 8 deletions(-)
> 
> diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
> index 84de1123e178..3cf7e54af0b7 100644
> --- a/drivers/staging/exfat/exfat.h
> +++ b/drivers/staging/exfat/exfat.h
> @@ -30,8 +30,6 @@
>  #undef DEBUG
>  #endif
>  
> -#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
> -
>  #define DENTRY_SIZE		32	/* dir entry size */
>  #define DENTRY_SIZE_BITS	5
>  
> diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
> index 544a453f3076..3980026a8882 100644
> --- a/fs/erofs/internal.h
> +++ b/fs/erofs/internal.h
> @@ -425,7 +425,5 @@ static inline int z_erofs_init_zip_subsystem(void) { return 0; }
>  static inline void z_erofs_exit_zip_subsystem(void) {}
>  #endif	/* !CONFIG_EROFS_FS_ZIP */
>  
> -#define EFSCORRUPTED    EUCLEAN         /* Filesystem is corrupted */
> -
>  #endif	/* __EROFS_INTERNAL_H */
>  
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 03db3e71676c..a86c2585457d 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -3396,6 +3396,5 @@ static inline int ext4_buffer_uptodate(struct buffer_head *bh)
>  #endif	/* __KERNEL__ */
>  
>  #define EFSBADCRC	EBADMSG		/* Bad CRC detected */
> -#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
>  
>  #endif	/* _EXT4_H */
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 4024790028aa..04ebe77569a3 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -3752,6 +3752,5 @@ static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
>  }
>  
>  #define EFSBADCRC	EBADMSG		/* Bad CRC detected */
> -#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
>  
>  #endif /* _LINUX_F2FS_H */
> diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
> index ca15105681ca..3409d02a7d21 100644
> --- a/fs/xfs/xfs_linux.h
> +++ b/fs/xfs/xfs_linux.h
> @@ -123,7 +123,6 @@ typedef __u32			xfs_nlink_t;
>  
>  #define ENOATTR		ENODATA		/* Attribute not found */
>  #define EWRONGFS	EINVAL		/* Mount with wrong filesystem type */
> -#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
>  #define EFSBADCRC	EBADMSG		/* Bad CRC detected */
>  
>  #define SYNCHRONIZE()	barrier()
> diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
> index 564793c24d12..1ecd3859d040 100644
> --- a/include/linux/jbd2.h
> +++ b/include/linux/jbd2.h
> @@ -1657,6 +1657,5 @@ static inline tid_t  jbd2_get_latest_transaction(journal_t *journal)
>  #endif	/* __KERNEL__ */
>  
>  #define EFSBADCRC	EBADMSG		/* Bad CRC detected */
> -#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
>  
>  #endif	/* _LINUX_JBD2_H */
> diff --git a/include/uapi/asm-generic/errno.h b/include/uapi/asm-generic/errno.h
> index cf9c51ac49f9..1d5ffdf54cb0 100644
> --- a/include/uapi/asm-generic/errno.h
> +++ b/include/uapi/asm-generic/errno.h
> @@ -98,6 +98,7 @@
>  #define	EINPROGRESS	115	/* Operation now in progress */
>  #define	ESTALE		116	/* Stale file handle */
>  #define	EUCLEAN		117	/* Structure needs cleaning */
> +#define	EFSCORRUPTED	EUCLEAN
>  #define	ENOTNAM		118	/* Not a XENIX named type file */
>  #define	ENAVAIL		119	/* No XENIX semaphores available */
>  #define	EISNAM		120	/* Is a named type file */
> -- 
> 2.24.0.rc1
>