[XFS] Add a mechanism for XFS to use the generic quota sync method.
This is now used to issue a delayed allocation flush before reporting
quota, which allows the used space quota report to match reality.
Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/quota.c b/fs/quota.c
index f5d1cff..1df7832 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -118,6 +118,10 @@
if (!sb->s_qcop->get_xquota)
return -ENOSYS;
break;
+ case Q_XQUOTASYNC:
+ if (!sb->s_qcop->quota_sync)
+ return -ENOSYS;
+ break;
default:
return -EINVAL;
}
@@ -128,7 +132,7 @@
(type == XQM_GRPQUOTA && !in_egroup_p(id))) &&
!capable(CAP_SYS_ADMIN))
return -EPERM;
- } else if (cmd != Q_XGETQSTAT) {
+ } else if (cmd != Q_XGETQSTAT && cmd != Q_XQUOTASYNC) {
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
}
@@ -322,6 +326,8 @@
return -EFAULT;
return 0;
}
+ case Q_XQUOTASYNC:
+ return sb->s_qcop->quota_sync(sb, type);
/* We never reach here unless validity check is broken */
default:
BUG();
diff --git a/include/linux/dqblk_xfs.h b/include/linux/dqblk_xfs.h
index 6ad85bb..2fda1b2 100644
--- a/include/linux/dqblk_xfs.h
+++ b/include/linux/dqblk_xfs.h
@@ -37,6 +37,7 @@
#define Q_XSETQLIM XQM_CMD(4) /* set disk limits */
#define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */
#define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */
+#define Q_XQUOTASYNC XQM_CMD(7) /* delalloc flush, updates dquots */
/*
* fs_disk_quota structure: