• Al Viro's avatar
    ufs: fix the logics for tail relocation · 77e9ce32
    Al Viro authored
    * original hysteresis loop got broken by typo back in 2002; now
    it never switches out of OPTTIME state.  Fixed.
    * critical levels for switching from OPTTIME to OPTSPACE and back
    ought to be calculated once, at mount time.
    * we should use mul_u64_u32_div() for those calculations, now that
    ->s_dsize is 64bit.
    * to quote Kirk McKusick (in 1995 FreeBSD commit message):
        The threshold for switching from time-space and space-time is too small
        when minfree is 5%...so make it stay at space in this case.
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    77e9ce32
ufs_fs.h 34.6 KB