From 977faf392fc898407554bbe7338d57b29e3660cf Mon Sep 17 00:00:00 2001 From: Olaf Kirch Date: Wed, 4 Oct 2006 02:15:51 -0700 Subject: [PATCH] [PATCH] knfsd: hide use of lockd's h_monitored flag This patch moves all checks of the h_monitored flag into the nsm_monitor/unmonitor functions. A subsequent patch will replace the mechanism by which we mark a host as being monitored. There is still one occurence of h_monitored outside of mon.c and that is in clntlock.c where we respond to a reboot. The subsequent patch will modify this too. Signed-off-by: Olaf Kirch Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/lockd/clntproc.c | 2 +- fs/lockd/host.c | 9 ++++++--- fs/lockd/mon.c | 19 ++++++++++++------- fs/lockd/svc4proc.c | 2 +- fs/lockd/svcproc.c | 2 +- 5 files changed, 21 insertions(+), 13 deletions(-) diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 0116729cec5f..5436be623e30 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -499,7 +499,7 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl) unsigned char fl_flags = fl->fl_flags; int status = -ENOLCK; - if (!host->h_monitored && nsm_monitor(host) < 0) { + if (nsm_monitor(host) < 0) { printk(KERN_NOTICE "lockd: failed to monitor %s\n", host->h_name); goto out; diff --git a/fs/lockd/host.c b/fs/lockd/host.c index a0d0b58ce7a4..637ec9567066 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -331,9 +331,12 @@ nlm_gc_hosts(void) } dprintk("lockd: delete host %s\n", host->h_name); *q = host->h_next; - /* Don't unmonitor hosts that have been invalidated */ - if (host->h_monitored && !host->h_killed) - nsm_unmonitor(host); + + /* + * Unmonitor unless host was invalidated (i.e. lockd restarted) + */ + nsm_unmonitor(host); + if ((clnt = host->h_rpcclnt) != NULL) { if (atomic_read(&clnt->cl_users)) { printk(KERN_WARNING diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index a816b920d431..e02a1a4dfced 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -74,6 +74,8 @@ nsm_monitor(struct nlm_host *host) int status; dprintk("lockd: nsm_monitor(%s)\n", host->h_name); + if (host->h_monitored) + return 0; status = nsm_mon_unmon(host, SM_MON, &res); @@ -91,15 +93,18 @@ int nsm_unmonitor(struct nlm_host *host) { struct nsm_res res; - int status; + int status = 0; dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name); - - status = nsm_mon_unmon(host, SM_UNMON, &res); - if (status < 0) - printk(KERN_NOTICE "lockd: cannot unmonitor %s\n", host->h_name); - else - host->h_monitored = 0; + if (!host->h_monitored) + return 0; + host->h_monitored = 0; + + if (!host->h_killed) { + status = nsm_mon_unmon(host, SM_UNMON, &res); + if (status < 0) + printk(KERN_NOTICE "lockd: cannot unmonitor %s\n", host->h_name); + } return status; } diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c index a2dd9ccb9b32..b5aceb83f8cb 100644 --- a/fs/lockd/svc4proc.c +++ b/fs/lockd/svc4proc.c @@ -39,7 +39,7 @@ nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, /* Obtain host handle */ if (!(host = nlmsvc_lookup_host(rqstp)) - || (argp->monitor && !host->h_monitored && nsm_monitor(host) < 0)) + || (argp->monitor && nsm_monitor(host) < 0)) goto no_locks; *hostp = host; diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c index dbb66a3b5cd9..dbc4ea2638c9 100644 --- a/fs/lockd/svcproc.c +++ b/fs/lockd/svcproc.c @@ -67,7 +67,7 @@ nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, /* Obtain host handle */ if (!(host = nlmsvc_lookup_host(rqstp)) - || (argp->monitor && !host->h_monitored && nsm_monitor(host) < 0)) + || (argp->monitor && nsm_monitor(host) < 0)) goto no_locks; *hostp = host; -- 2.20.1