[Cluster-devel] [PATCH 2/5] NLM failover - per fs grace period
Wendy Cheng
wcheng at redhat.com
Mon Aug 14 06:00:21 UTC 2006
This change enables per NFS-export entry lockd grace period. The
implementation is based on a global single linked list nlm_servs that
contains entries of fsid info. It is expected this would not be a
frequent event. The nlm_servs list should be short and the entries
expire within a maximum of 50 seconds. The grace period setting follows
the existing NLM grace period handling logic and is triggered via
echoing the NFS export filesystem id into /proc/fs/nfsd/nlm_set_igrace
file as:
shell> echo 1234 > /proc/fs/nfsd/nlm_set_igrace
Signed-off-by: S. Wendy Cheng <wcheng at redhat.com>
Signed-off-by: Lon Hohberger <lhh at redhat.com>
fs/lockd/svc.c | 8 +-
fs/lockd/svc4proc.c | 31 +++++++---
fs/lockd/svcproc.c | 29 +++++++--
fs/lockd/svcsubs.c | 133 ++++++++++++++++++++++++++++++++++++
++++++++
fs/nfsd/nfsctl.c | 32 ++++++++++
include/linux/lockd/bind.h | 3
include/linux/lockd/lockd.h | 10 +++
7 files changed, 230 insertions(+), 16 deletions(-)
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