Remove long untrue note about storing state information inside free items.

OKed by:	rwatson, tegge
Approved by:	pjd (mentor)
MFC after:	1 week

1 files changed, 1 insertions, 19 deletions

diff --git a/share/man/man9/zone.9 b/share/man/man9/zone.9
index d6e9d72..089f686 100644
--- a/share/man/man9/zone.9
+++ b/share/man/man9/zone.9
@@ -65,27 +65,9 @@ The zone allocator keeps track of which items are in use and which
 are not, and provides functions for allocating items from the zone and
 for releasing them back (which makes them available for later use).
 .Pp
-The zone allocator stores state information inside the items proper
-while they are not allocated,
-so structures that will be managed by the zone allocator
-and wish to use the type stable property of zones by leaving some fields
-pre-filled between allocations, must reserve
-two pointers at the very beginning for internal use by the zone
-allocator, as follows:
-.Bd -literal -offset indent
-struct my_item {
-        struct my_item  *z_rsvd1;
-        struct my_item  *z_rsvd2;
-        /* rest of structure */
-};
-.Ed
-.Pp
-Alternatively they should assume those entries corrupted
-after each allocation.
 After the first allocation of an item,
 it will have been cleared to zeroes, however subsequent allocations
-will retain the contents as of the last free, with the exception of the
-fields mentioned above.
+will retain the contents as of the last free.
 .Pp
 The
 .Fn uma_zcreate