From 71ddabb94a623d1e16e7e66898bf439ff78ecc41 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Fri, 23 Nov 2007 16:29:42 +1100 Subject: [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 Signed-off-by: David Chinner Signed-off-by: Lachlan McIlroy --- fs/xfs/xfs_vnodeops.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'fs/xfs/xfs_vnodeops.c') diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index d964e21521ab..5322d9fb5321 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -136,7 +136,7 @@ xfs_getattr( default: vap->va_rdev = 0; - if (!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) { + if (!(XFS_IS_REALTIME_INODE(ip))) { vap->va_blocksize = xfs_preferred_iosize(mp); } else { @@ -508,7 +508,7 @@ xfs_setattr( */ if ((ip->i_d.di_nextents || ip->i_delayed_blks) && (mask & XFS_AT_XFLAGS) && - (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != + (XFS_IS_REALTIME_INODE(ip)) != (vap->va_xflags & XFS_XFLAG_REALTIME)) { code = XFS_ERROR(EINVAL); /* EFBIG? */ goto error_return; @@ -520,7 +520,7 @@ xfs_setattr( if ((mask & XFS_AT_EXTSIZE) && vap->va_extsize != 0) { xfs_extlen_t size; - if ((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) || + if (XFS_IS_REALTIME_INODE(ip) || ((mask & XFS_AT_XFLAGS) && (vap->va_xflags & XFS_XFLAG_REALTIME))) { size = mp->m_sb.sb_rextsize << @@ -1144,7 +1144,7 @@ xfs_fsync( * If this inode is on the RT dev we need to flush that * cache as well. */ - if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) + if (XFS_IS_REALTIME_INODE(ip)) xfs_blkdev_issue_flush(ip->i_mount->m_rtdev_targp); } @@ -4044,7 +4044,7 @@ xfs_zero_remaining_bytes( int error = 0; bp = xfs_buf_get_noaddr(mp->m_sb.sb_blocksize, - ip->i_d.di_flags & XFS_DIFLAG_REALTIME ? + XFS_IS_REALTIME_INODE(ip) ? mp->m_rtdev_targp : mp->m_ddev_targp); for (offset = startoff; offset <= endoff; offset = lastoffset + 1) { @@ -4141,7 +4141,7 @@ xfs_free_file_space( error = 0; if (len <= 0) /* if nothing being freed */ return error; - rt = (ip->i_d.di_flags & XFS_DIFLAG_REALTIME); + rt = XFS_IS_REALTIME_INODE(ip); startoffset_fsb = XFS_B_TO_FSB(mp, offset); end_dmi_offset = offset + len; endoffset_fsb = XFS_B_TO_FSBT(mp, end_dmi_offset); -- cgit v1.2.1