diff options
Diffstat (limited to 'fs/xfs/xfs_types.h')
| -rw-r--r-- | fs/xfs/xfs_types.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h index 69074ac20ac3..781772c6f192 100644 --- a/fs/xfs/xfs_types.h +++ b/fs/xfs/xfs_types.h @@ -183,4 +183,14 @@ struct xfs_name { */ typedef __uint32_t xfs_dqid_t; +/* + * Constants for bit manipulations. + */ +#define XFS_NBBYLOG 3 /* log2(NBBY) */ +#define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */ +#define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG) +#define XFS_NBWORD (1 << XFS_NBWORDLOG) +#define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1) + + #endif /* __XFS_TYPES_H__ */ |