linux-kernel - Re: [PATCH 1/2] xfs: introduce a generic shutdown ioctl

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Date:	Fri, 23 Jan 2015 11:03:04 -0800
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	Dave Chinner <david@...morbit.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net, xfs@....sgi.com
Subject: Re: [PATCH 1/2] xfs: introduce a generic shutdown ioctl

Hi Dave,

Any obejction for this patch?
Can I push this patch during the next merge window?

Thanks,

On Fri, Jan 09, 2015 at 01:34:35AM -0800, Jaegeuk Kim wrote:
> This patch introduces a generic ioctl for fs shutdown used by xfs.
> 
> Cc: Dave Chinner <david@...morbit.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
> ---
>  fs/xfs/xfs_fs.h         | 8 ++++----
>  include/uapi/linux/fs.h | 8 ++++++++
>  2 files changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
> index 18dc721..fe0eeee 100644
> --- a/fs/xfs/xfs_fs.h
> +++ b/fs/xfs/xfs_fs.h
> @@ -484,9 +484,9 @@ typedef struct xfs_swapext
>  /*
>   * Flags for going down operation
>   */
> -#define XFS_FSOP_GOING_FLAGS_DEFAULT		0x0	/* going down */
> -#define XFS_FSOP_GOING_FLAGS_LOGFLUSH		0x1	/* flush log but not data */
> -#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH		0x2	/* don't flush log nor data */
> +#define XFS_FSOP_GOING_FLAGS_DEFAULT	FS_GOING_DOWN_FULLSYNC
> +#define XFS_FSOP_GOING_FLAGS_LOGFLUSH	FS_GOING_DOWN_METASYNC
> +#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH	FS_GOING_DOWN_NOSYNC
>  
>  /*
>   * ioctl commands that are used by Linux filesystems
> @@ -555,7 +555,7 @@ typedef struct xfs_swapext
>  #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
>  #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
>  #define XFS_IOC_FSGEOMETRY	     _IOR ('X', 124, struct xfs_fsop_geom)
> -#define XFS_IOC_GOINGDOWN	     _IOR ('X', 125, __uint32_t)
> +#define XFS_IOC_GOINGDOWN	     FS_IOC_SHUTDOWN
>  /*	XFS_IOC_GETFSUUID ---------- deprecated 140	 */
>  
>  
> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
> index 3735fa0..a4e4be5 100644
> --- a/include/uapi/linux/fs.h
> +++ b/include/uapi/linux/fs.h
> @@ -157,6 +157,7 @@ struct inodes_stat_t {
>  #define FIFREEZE	_IOWR('X', 119, int)	/* Freeze */
>  #define FITHAW		_IOWR('X', 120, int)	/* Thaw */
>  #define FITRIM		_IOWR('X', 121, struct fstrim_range)	/* Trim */
> +#define FS_IOC_SHUTDOWN	_IOR('X', 125, __u32)	/* Shutdown */
>  
>  #define	FS_IOC_GETFLAGS			_IOR('f', 1, long)
>  #define	FS_IOC_SETFLAGS			_IOW('f', 2, long)
> @@ -205,4 +206,11 @@ struct inodes_stat_t {
>  #define SYNC_FILE_RANGE_WRITE		2
>  #define SYNC_FILE_RANGE_WAIT_AFTER	4
>  
> +/*
> + * Flags for going down operation used by FS_IOC_GOINGDOWN
> + */
> +#define FS_GOING_DOWN_FULLSYNC	0x0	/* going down with full sync */
> +#define FS_GOING_DOWN_METASYNC	0x1	/* going down with metadata */
> +#define FS_GOING_DOWN_NOSYNC	0x2	/* going down */
> +
>  #endif /* _UAPI_LINUX_FS_H */
> -- 
> 2.1.1
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