[PATCH] Introduce SEEK_DATA/SEEK_HOLE support v9

[Mark Tinguely]

On 05/10/12 08:29, Jeff Liu wrote:
> Hello,
>
> This is the revised patch according to Mark's comments.
> Is it possible to get it to accept if there are no other issues,
> so that I can continue to work on the unwritten part based on that.
>
> Thanks,
> -Jeff
>
> Signed-off-by: Jie Liu<jeff.liu at oracle.com>
>
> ---

> +
> +STATIC loff_t
> +xfs_seek_hole(
> +	struct file		*file,
> +	loff_t			start,
> +	u32			type)
> +{
> +	struct inode		*inode = file->f_mapping->host;
> +	struct xfs_inode	*ip = XFS_I(inode);
> +	struct xfs_mount	*mp = ip->i_mount;
> +	loff_t			uninitialized_var(offset);
> +	loff_t			holeoff;
> +	xfs_fsize_t		isize;
> +	xfs_fileoff_t		fsbno;
> +	uint			lock;
> +	int			error;
> +
> +	if (XFS_FORCED_SHUTDOWN(mp))
> +		return -XFS_ERROR(EIO);

I think xfs_bmapi_read() returns just a XFS_ERROR(EIO), not negative.
Ben can fix up if you agree.

Other than that it is a great feature to in XFS.

Reviewed-by: Mark Tinguely <tinguely at sgi.com>