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authorEric Sandeen <sandeen@sandeen.net>2007-11-23 16:29:42 +1100
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-02-07 18:16:43 +1100
commit71ddabb94a623d1e16e7e66898bf439ff78ecc41 (patch)
treeded37e51148312db71e6a68b18c8bfca49b95112 /fs/xfs/xfs_dfrag.c
parenta67d7c5f5d25d0b13a4dfb182697135b014fa478 (diff)
downloadblackbird-op-linux-71ddabb94a623d1e16e7e66898bf439ff78ecc41.tar.gz
blackbird-op-linux-71ddabb94a623d1e16e7e66898bf439ff78ecc41.zip
[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_dfrag.c')
-rw-r--r--fs/xfs/xfs_dfrag.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index 4ad29cbb4233..03a42d21610a 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -185,8 +185,7 @@ xfs_swap_extents(
}
/* Verify both files are either real-time or non-realtime */
- if ((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) !=
- (tip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
+ if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) {
error = XFS_ERROR(EINVAL);
goto error0;
}
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