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| author | Dave Chinner <dchinner@redhat.com> | 2013-08-12 20:49:29 +1000 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-08-12 16:13:10 -0500 |
| commit | c7298202e5df6fad66c7c8146bf2ed55ba07aff0 (patch) | |
| tree | b2aa33f8869ac927af3aa4185cd4fee4f6ac788d /fs/xfs/xfs_format.h | |
| parent | 2a3c0acc351baf1e5e584d8d0692f41d5067582c (diff) | |
| download | blackbird-op-linux-c7298202e5df6fad66c7c8146bf2ed55ba07aff0.tar.gz blackbird-op-linux-c7298202e5df6fad66c7c8146bf2ed55ba07aff0.zip | |
xfs: introduce xfs_rtalloc_defs.h
There are quite a few realtime device definitions shared with
userspace. Move them from xfs_rtalloc.h to xfs_rt_alloc_defs.h
so we don't need to share xfs_rtalloc.h with userspace anymore.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_format.h')
| -rw-r--r-- | fs/xfs/xfs_format.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/fs/xfs/xfs_format.h b/fs/xfs/xfs_format.h index 2b4f16668123..62053744a0a6 100644 --- a/fs/xfs/xfs_format.h +++ b/fs/xfs/xfs_format.h @@ -28,6 +28,47 @@ */ /* + * RealTime Device format definitions + */ + +/* Min and max rt extent sizes, specified in bytes */ +#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024) /* 1GB */ +#define XFS_DFL_RTEXTSIZE (64 * 1024) /* 64kB */ +#define XFS_MIN_RTEXTSIZE (4 * 1024) /* 4kB */ + +#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize) +#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask) +#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize) +#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask) + +/* + * RT Summary and bit manipulation macros. + */ +#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb))) +#define XFS_SUMOFFSTOBLOCK(mp,s) \ + (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog) +#define XFS_SUMPTR(mp,bp,so) \ + ((xfs_suminfo_t *)((bp)->b_addr + \ + (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp)))) + +#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log) +#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log) +#define XFS_BITTOWORD(mp,bi) \ + ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp))) + +#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b)) +#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b)) + +#define XFS_RTLOBIT(w) xfs_lowbit32(w) +#define XFS_RTHIBIT(w) xfs_highbit32(w) + +#if XFS_BIG_BLKNOS +#define XFS_RTBLOCKLOG(b) xfs_highbit64(b) +#else +#define XFS_RTBLOCKLOG(b) xfs_highbit32(b) +#endif + +/* * Dquot and dquot block format definitions */ #define XFS_DQUOT_MAGIC 0x4451 /* 'DQ' */ |
