• Eric Sandeen's avatar
    [XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config · 71ddabb9
    Eric Sandeen authored
    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
    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: default avatarEric Sandeen <sandeen@sandeen.net>
    Signed-off-by: default avatarDavid Chinner <dgc@sgi.com>
    Signed-off-by: default avatarLachlan McIlroy <lachlan@sgi.com>
xfs_rtalloc.h 5 KB