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authorOlaf Kirch <okir@suse.de>2006-10-04 02:16:01 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 07:55:17 -0700
commitabd1f50094cad9dff6d68ada98b495549f52fc30 (patch)
treedd738067aa90af1cb4613a7c711ee426ff5f8ae9 /fs/lockd/host.c
parent350fce8dbf43f7d441b77366851c9ce3cd28d6dc (diff)
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[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 <okir@suse.de> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/lockd/host.c')
-rw-r--r--fs/lockd/host.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 1bf384307d1..a1423c66df0 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -462,7 +462,11 @@ __nsm_find(const struct sockaddr_in *sin,
list_for_each(pos, &nsm_handles) {
nsm = list_entry(pos, struct nsm_handle, sm_link);
- if (!nlm_cmp_addr(&nsm->sm_addr, sin))
+ if (hostname && nsm_use_hostnames) {
+ if (strlen(nsm->sm_name) != hostname_len
+ || memcmp(nsm->sm_name, hostname, hostname_len))
+ continue;
+ } else if (!nlm_cmp_addr(&nsm->sm_addr, sin))
continue;
atomic_inc(&nsm->sm_count);
goto out;