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[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>
This commit is contained in:
Michael Nishimoto 2008-05-19 16:34:20 +10:00 committed by Niv Sardi
parent b41759cf11
commit d729eae893
1 changed files with 10 additions and 6 deletions
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16
fs/xfs/xfs_log.c
View File

@ -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;
}
}