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| author | Michael Nishimoto <miken@agami.com> | 2008-05-19 16:34:20 +1000 |
|---|---|---|
| committer | Niv Sardi <xaiki@debian.org> | 2008-07-28 16:58:11 +1000 |
| commit | d729eae8933cb3eb8edf1446532c178b66b293a9 (patch) | |
| tree | 6cabfe6889c740a12c663dc01152c7d8cfe867e5 /fs/xfs/xfs_log.c | |
| parent | b41759cf11c84ad0d569c0ef200c449ad2cc24e3 (diff) | |
| download | lwn-d729eae8933cb3eb8edf1446532c178b66b293a9.tar.gz lwn-d729eae8933cb3eb8edf1446532c178b66b293a9.zip | |
[XFS] Ensure that 2 GiB xfs logs work properly.
We found this while experimenting with 2GiB xfs logs. The previous code
never assumed that xfs logs would ever get so large.
SGI-PV: 981502
SGI-Modid: xfs-linux-melb:xfs-kern:31058a
Signed-off-by: Michael Nishimoto <miken@agami.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_log.c')
| -rw-r--r-- | fs/xfs/xfs_log.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 16a01abe2490..6195cc880101 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -226,20 +226,24 @@ xlog_grant_sub_space(struct log *log, int bytes) static void xlog_grant_add_space_write(struct log *log, int bytes) { - log->l_grant_write_bytes += bytes; - if (log->l_grant_write_bytes > log->l_logsize) { - log->l_grant_write_bytes -= log->l_logsize; + int tmp = log->l_logsize - log->l_grant_write_bytes; + if (tmp > bytes) + log->l_grant_write_bytes += bytes; + else { log->l_grant_write_cycle++; + log->l_grant_write_bytes = bytes - tmp; } } static void xlog_grant_add_space_reserve(struct log *log, int bytes) { - log->l_grant_reserve_bytes += bytes; - if (log->l_grant_reserve_bytes > log->l_logsize) { - log->l_grant_reserve_bytes -= log->l_logsize; + int tmp = log->l_logsize - log->l_grant_reserve_bytes; + if (tmp > bytes) + log->l_grant_reserve_bytes += bytes; + else { log->l_grant_reserve_cycle++; + log->l_grant_reserve_bytes = bytes - tmp; } } |