[PATCH 045/119] xfs: add rmap btree geometry feature flag

[Brian Foster]

On Thu, Jun 16, 2016 at 06:22:40PM -0700, Darrick J. Wong wrote:
> From: Dave Chinner <dchinner at redhat.com>
> 
> So xfs_info and other userspace utilities know the filesystem is
> using this feature.
> 
> Signed-off-by: Dave Chinner <dchinner at redhat.com>
> ---

Reviewed-by: Brian Foster <bfoster at redhat.com>

>  fs/xfs/libxfs/xfs_fs.h |    1 +
>  fs/xfs/xfs_fsops.c     |    4 +++-
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> 
> diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
> index f5ec9c5..7945505 100644
> --- a/fs/xfs/libxfs/xfs_fs.h
> +++ b/fs/xfs/libxfs/xfs_fs.h
> @@ -206,6 +206,7 @@ typedef struct xfs_fsop_resblks {
>  #define XFS_FSOP_GEOM_FLAGS_FTYPE	0x10000	/* inode directory types */
>  #define XFS_FSOP_GEOM_FLAGS_FINOBT	0x20000	/* free inode btree */
>  #define XFS_FSOP_GEOM_FLAGS_SPINODES	0x40000	/* sparse inode chunks	*/
> +#define XFS_FSOP_GEOM_FLAGS_RMAPBT	0x80000	/* Reverse mapping btree */
>  
>  /*
>   * Minimum and maximum sizes need for growth checks.
> diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
> index 3772f6c..5980d5c 100644
> --- a/fs/xfs/xfs_fsops.c
> +++ b/fs/xfs/xfs_fsops.c
> @@ -105,7 +105,9 @@ xfs_fs_geometry(
>  			(xfs_sb_version_hasfinobt(&mp->m_sb) ?
>  				XFS_FSOP_GEOM_FLAGS_FINOBT : 0) |
>  			(xfs_sb_version_hassparseinodes(&mp->m_sb) ?
> -				XFS_FSOP_GEOM_FLAGS_SPINODES : 0);
> +				XFS_FSOP_GEOM_FLAGS_SPINODES : 0) |
> +			(xfs_sb_version_hasrmapbt(&mp->m_sb) ?
> +				XFS_FSOP_GEOM_FLAGS_RMAPBT : 0);
>  		geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
>  				mp->m_sb.sb_logsectsize : BBSIZE;
>  		geo->rtsectsize = mp->m_sb.sb_blocksize;
> 
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