diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-17 15:44:06 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-17 17:22:42 -0400 |
| commit | 77e9ce327d9b607cd6e57c0f4524a654dc59c4b1 (patch) | |
| tree | cb2bc18c6c0e09e2af7f5bbc3ad007acc77c8ebf /fs/ufs/ufs_fs.h | |
| parent | c0ef65d2928249e822b813beb41b6c1478c556ab (diff) | |
ufs: fix the logics for tail relocation
* 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: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs/ufs_fs.h')
| -rw-r--r-- | fs/ufs/ufs_fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ufs/ufs_fs.h b/fs/ufs/ufs_fs.h index 823d55a37586..150eef6f1233 100644 --- a/fs/ufs/ufs_fs.h +++ b/fs/ufs/ufs_fs.h @@ -792,6 +792,8 @@ struct ufs_sb_private_info { __s32 fs_magic; /* filesystem magic */ unsigned int s_dirblksize; __u64 s_root_blocks; + __u64 s_time_to_space; + __u64 s_space_to_time; }; /* |