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[NETLINK]: Switch cb_lock spinlock to mutex and allow to override it

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Switch cb_lock to mutex and allow netlink kernel users to override it
with a subsystem specific mutex for consistent locking in dump callbacks.
All netlink_dump_start users have been audited not to rely on any
side-effects of the previously used spinlock.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2007-04-20 14:14:21 -07:00
committed by David S. Miller
parent b076deb849
commit af65bdfce9
20 changed files with 47 additions and 34 deletions
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net/core/rtnetlink.c
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@@ -972,7 +972,7 @@ void __init rtnetlink_init(void)
panic("rtnetlink_init: cannot allocate rta_buf\n");
rtnl = netlink_kernel_create(NETLINK_ROUTE, RTNLGRP_MAX, rtnetlink_rcv,
THIS_MODULE);
NULL, THIS_MODULE);
if (rtnl == NULL)
panic("rtnetlink_init: cannot initialize rtnetlink\n");
netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);