On Thu, Jul 24, 2014 at 10:22:53AM -0400, Brian Foster wrote:
> The sparse inode chunks feature will use the helper function to enable
> the allocation of sparse inode chunks. The incompatible feature bit is
> set on disk once a sparse inode chunk is allocated to prevent older
> drivers from mounting an fs with sparse chunks.
>
> Note that the feature is hardcoded disabled and the feature bit not
> included in the all features mask until fully implemented.
>
> Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
> ---
> fs/xfs/libxfs/xfs_sb.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/fs/xfs/libxfs/xfs_sb.h b/fs/xfs/libxfs/xfs_sb.h
> index c43c2d6..6f48de9 100644
> --- a/fs/xfs/libxfs/xfs_sb.h
> +++ b/fs/xfs/libxfs/xfs_sb.h
> @@ -509,6 +509,7 @@ xfs_sb_has_ro_compat_feature(
> }
>
> #define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */
> +#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1) /* sparse inode chunks */
> #define XFS_SB_FEAT_INCOMPAT_ALL \
> (XFS_SB_FEAT_INCOMPAT_FTYPE)
>
> @@ -558,6 +559,11 @@ static inline int xfs_sb_version_hasfinobt(xfs_sb_t *sbp)
> (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT);
> }
>
> +static inline int xfs_sb_version_hassparseinodes(struct xfs_sb *sbp)
static inline bool ...
> +{
> + return 0; /* not yet enabled */
return false;
-Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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