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| author | Eric Sandeen <sandeen@sandeen.net> | 2007-11-23 08:29:42 +0300 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-02-07 10:16:43 +0300 |
| commit | 71ddabb94a623d1e16e7e66898bf439ff78ecc41 (patch) | |
| tree | ded37e51148312db71e6a68b18c8bfca49b95112 /fs/xfs/xfs_iomap.c | |
| parent | a67d7c5f5d25d0b13a4dfb182697135b014fa478 (diff) | |
| download | linux-71ddabb94a623d1e16e7e66898bf439ff78ecc41.tar.xz | |
[XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config
Use XFS_IS_REALTIME_INODE in more places, and #define it to 0 if
CONFIG_XFS_RT is off. This should be safe because mount checks in
xfs_rtmount_init:
so if we get mounted w/o CONFIG_XFS_RT, no realtime inodes should be
encountered after that.
Defining XFS_IS_REALTIME_INODE to 0 saves a bit of stack space,
presumeably gcc can optimize around the various "if (0)" type checks:
xfs_alloc_file_space -8 xfs_bmap_adjacent -16 xfs_bmapi -8
xfs_bmap_rtalloc -16 xfs_bunmapi -28 xfs_free_file_space -64 xfs_imap +8
<-- ? hmm. xfs_iomap_write_direct -12 xfs_qm_dqusage_adjust -4
xfs_qm_vop_chown_reserve -4
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30014a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 637a24473f9b..fde37f87d52f 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -141,7 +141,7 @@ xfs_imap_to_bmap( iomapp->iomap_bsize = XFS_FSB_TO_B(mp, imap->br_blockcount); iomapp->iomap_flags = flags; - if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) { + if (XFS_IS_REALTIME_INODE(ip)) { iomapp->iomap_flags |= IOMAP_REALTIME; iomapp->iomap_target = mp->m_rtdev_targp; } else { @@ -298,7 +298,7 @@ xfs_iomap_eof_align_last_fsb( xfs_extlen_t align; int eof, error; - if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) + if (XFS_IS_REALTIME_INODE(ip)) ; /* * If mounted with the "-o swalloc" option, roundup the allocation @@ -524,7 +524,7 @@ xfs_iomap_write_direct( } if (unlikely(!imap.br_startblock && - !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME))) { + !(XFS_IS_REALTIME_INODE(ip)))) { error = xfs_cmn_err_fsblock_zero(ip, &imap); goto error_out; } @@ -687,7 +687,7 @@ retry: } if (unlikely(!imap[0].br_startblock && - !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME))) + !(XFS_IS_REALTIME_INODE(ip)))) return xfs_cmn_err_fsblock_zero(ip, &imap[0]); *ret_imap = imap[0]; @@ -932,7 +932,7 @@ xfs_iomap_write_unwritten( return XFS_ERROR(error); if (unlikely(!imap.br_startblock && - !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME))) + !(XFS_IS_REALTIME_INODE(ip)))) return xfs_cmn_err_fsblock_zero(ip, &imap); if ((numblks_fsb = imap.br_blockcount) == 0) { |