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authorEric Sandeen <sandeen@sandeen.net>2007-11-23 00:29:42 -0500
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-02-07 02:16:43 -0500
commit71ddabb94a623d1e16e7e66898bf439ff78ecc41 (patch)
treeded37e51148312db71e6a68b18c8bfca49b95112 /fs/xfs/linux-2.6/xfs_iops.c
parenta67d7c5f5d25d0b13a4dfb182697135b014fa478 (diff)
[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/linux-2.6/xfs_iops.c')
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 9ddef91a436d..1ecd86a8c6e6 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -612,7 +612,7 @@ xfs_vn_getattr(
612 sysv_minor(ip->i_df.if_u2.if_rdev)); 612 sysv_minor(ip->i_df.if_u2.if_rdev));
613 break; 613 break;
614 default: 614 default:
615 if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) { 615 if (XFS_IS_REALTIME_INODE(ip)) {
616 /* 616 /*
617 * If the file blocks are being allocated from a 617 * If the file blocks are being allocated from a
618 * realtime volume, then return the inode's realtime 618 * realtime volume, then return the inode's realtime