s4:dsdb/drepl_notify: reuse dreplsrv_notify_operation structures

s4:dsdb/drepl_notify: reuse dreplsrv_notify_operation structures

Otherwise we'll requeue the same notify events on and on.

(gdb) p *((struct dreplsrv_service *) 0x1b52190)->ops.notifies
$8 = {prev = 0xe4cb30, next = 0x1a25440, service = 0x1b52190, uSN = 123905,
source_dsa = 0x164c100, is_urgent = false, replica_flags = 29}
(gdb) p *((struct dreplsrv_service *) 0x1b52190)->ops.notifies->next
$9 = {prev = 0x80e000, next = 0x1b7bf70, service = 0x1b52190, uSN = 123589,
source_dsa = 0x1a2d930, is_urgent = false, replica_flags = 29}
(gdb) p *((struct dreplsrv_service *) 0x1b52190)->ops.notifies->next->next
$10 = {prev = 0x1a25440, next = 0x1d0c310, service = 0x1b52190, uSN = 1587,
source_dsa = 0x13d3210, is_urgent = false, replica_flags = 29}
(gdb) p *((struct dreplsrv_service *) 0x1b52190)->ops.notifies->next->next->next
$11 = {prev = 0x1b7bf70, next = 0x1ba1420, service = 0x1b52190, uSN = 123905,
source_dsa = 0x164c100, is_urgent = false, replica_flags = 29}
(gdb) p *((struct dreplsrv_service *)
0x1b52190)->ops.notifies->next->next->next->next
$12 = {prev = 0x1d0c310, next = 0x1c43510, service = 0x1b52190, uSN = 123589,
source_dsa = 0x1a2d930, is_urgent = false, replica_flags = 29}
(gdb) p *((struct dreplsrv_service *)
0x1b52190)->ops.notifies->next->next->next->next->next
$13 = {prev = 0x1ba1420, next = 0xed97b0, service = 0x1b52190, uSN = 1587,
source_dsa = 0x13d3210, is_urgent = false, replica_flags = 29}
(gdb) p *((struct dreplsrv_service *)
0x1b52190)->ops.notifies->next->next->next->next->next->next
$14 = {prev = 0x1c43510, next = 0xe4ce80, service = 0x1b52190, uSN = 123905,
source_dsa = 0x164c100, is_urgent = false, replica_flags = 29}

We can reuse this operations, while they're not yet started.

metze

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Fri Nov  5 07:15:04 UTC 2010 on sn-devel-104