xfs_quota: document how the default quota is stored

Nowhere in the man page is the default quota described; what it
does or where it is stored.  Add some brief information about this.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/man/man8/xfs_quota.8 b/man/man8/xfs_quota.8
index dd0479cdcbf7e3ace11c4f8919bba54c15c99859..6ead7ee99492fa7625e95f987a21d1162b4b668e 100644 (file)
--- a/man/man8/xfs_quota.8
+++ b/man/man8/xfs_quota.8
@@ -178,6 +178,12 @@ to a file on
 where the user's quota has not been exceeded.
 Then after rectifying the quota situation, the file can be moved back to the
 filesystem it belongs on.
+.SS Default Quotas
+The XFS quota subsystem allows a default quota to be enforced
+for any user, group or project which does not have a quota limit
+explicitly set.
+These limits are stored in and displayed as ID 0's limits, although they
+do not actually limit ID 0.
 .SH USER COMMANDS
 .TP
 .B print