From abd1f50094cad9dff6d68ada98b495549f52fc30 Mon Sep 17 00:00:00 2001 From: Olaf Kirch Date: Wed, 4 Oct 2006 02:16:01 -0700 Subject: [PATCH] knfsd: lockd: optionally use hostnames for identifying peers This patch adds the nsm_use_hostnames sysctl and module param. If set, lockd will use the client's name (as given in the NLM arguments) to find the NSM handle. This makes recovery work when the NFS peer is multi-homed, and the reboot notification arrives from a different IP than the original lock calls. Signed-off-by: Olaf Kirch Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/lockd/svc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'fs/lockd/svc.c') diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 3cc369e5693..a3b7602cd38 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -61,6 +61,7 @@ static DECLARE_WAIT_QUEUE_HEAD(lockd_exit); static unsigned long nlm_grace_period; static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO; static int nlm_udpport, nlm_tcpport; +int nsm_use_hostnames = 0; /* * Constants needed for the sysctl interface. @@ -395,6 +396,14 @@ static ctl_table nlm_sysctls[] = { .extra1 = (int *) &nlm_port_min, .extra2 = (int *) &nlm_port_max, }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "nsm_use_hostnames", + .data = &nsm_use_hostnames, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, { .ctl_name = 0 } }; @@ -483,6 +492,7 @@ module_param_call(nlm_udpport, param_set_port, param_get_int, &nlm_udpport, 0644); module_param_call(nlm_tcpport, param_set_port, param_get_int, &nlm_tcpport, 0644); +module_param(nsm_use_hostnames, bool, 0644); /* * Initialising and terminating the module. -- cgit v1.2.3