Messages in this thread Patches in this message | | | From | NeilBrown <> | Date | Fri, 1 Sep 2006 14:38:08 +1000 | Subject | [PATCH 001 of 19] knfsd: Hide use of lockd's h_monitored flag |
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From: Olaf Kirch <okir@suse.de>
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 <okir@suse.de> Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output ./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 .prev/fs/lockd/clntproc.c ./fs/lockd/clntproc.c --- .prev/fs/lockd/clntproc.c 2006-08-31 16:12:30.000000000 +1000 +++ ./fs/lockd/clntproc.c 2006-08-31 16:12:30.000000000 +1000 @@ -499,7 +499,7 @@ nlmclnt_lock(struct nlm_rqst *req, struc 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 .prev/fs/lockd/host.c ./fs/lockd/host.c --- .prev/fs/lockd/host.c 2006-08-31 16:12:30.000000000 +1000 +++ ./fs/lockd/host.c 2006-08-31 16:12:30.000000000 +1000 @@ -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 .prev/fs/lockd/mon.c ./fs/lockd/mon.c --- .prev/fs/lockd/mon.c 2006-08-31 16:12:30.000000000 +1000 +++ ./fs/lockd/mon.c 2006-08-31 16:12:30.000000000 +1000 @@ -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 .prev/fs/lockd/svc4proc.c ./fs/lockd/svc4proc.c --- .prev/fs/lockd/svc4proc.c 2006-08-31 16:12:30.000000000 +1000 +++ ./fs/lockd/svc4proc.c 2006-08-31 16:12:30.000000000 +1000 @@ -39,7 +39,7 @@ nlm4svc_retrieve_args(struct svc_rqst *r /* 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 .prev/fs/lockd/svcproc.c ./fs/lockd/svcproc.c --- .prev/fs/lockd/svcproc.c 2006-08-31 16:12:30.000000000 +1000 +++ ./fs/lockd/svcproc.c 2006-08-31 16:12:30.000000000 +1000 @@ -67,7 +67,7 @@ nlmsvc_retrieve_args(struct svc_rqst *rq /* 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; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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