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| author | Christoph Hellwig <hch@lst.de> | 2008-11-28 14:23:41 +1100 |
|---|---|---|
| committer | Niv Sardi <xaiki@sgi.com> | 2008-12-01 11:38:08 +1100 |
| commit | 92bfc6e7c4eabbbd15e7d6d49123b296d05dcfd1 (patch) | |
| tree | 4b409ecbc4b0704189b05989fae0a423bb557efd /fs/xfs/xfs_inode.h | |
| parent | 94e1b69d1abd108d306e926c3012ec89e481c0da (diff) | |
| download | lwn-92bfc6e7c4eabbbd15e7d6d49123b296d05dcfd1.tar.gz lwn-92bfc6e7c4eabbbd15e7d6d49123b296d05dcfd1.zip | |
[XFS] embededd struct xfs_imap into xfs_inode
Most uses of struct xfs_imap are to map and inode to a buffer. To avoid
copying around the inode location information we should just embedd a
strcut xfs_imap into the xfs_inode. To make sure it doesn't bloat an
inode the im_len is changed to a ushort, which is fine as that's what
the users exepect anyway.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode.h')
| -rw-r--r-- | fs/xfs/xfs_inode.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 0a9ad1c56a87..d5c3aa1b18ef 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -83,6 +83,16 @@ typedef struct xfs_ifork { } xfs_ifork_t; /* + * Inode location information. Stored in the inode and passed to + * xfs_imap_to_bp() to get a buffer and dinode for a given inode. + */ +struct xfs_imap { + xfs_daddr_t im_blkno; /* starting BB of inode chunk */ + ushort im_len; /* length in BBs of inode chunk */ + ushort im_boffset; /* inode offset in block in bytes */ +}; + +/* * This is the xfs in-core inode structure. * Most of the on-disk inode is embedded in the i_d field. * @@ -238,9 +248,7 @@ typedef struct xfs_inode { /* Inode location stuff */ xfs_ino_t i_ino; /* inode number (agno/agino)*/ - xfs_daddr_t i_blkno; /* blkno of inode buffer */ - ushort i_len; /* len of inode buffer */ - ushort i_boffset; /* off of inode in buffer */ + struct xfs_imap i_imap; /* location for xfs_imap() */ /* Extent information. */ xfs_ifork_t *i_afp; /* attribute fork pointer */ |