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lockd: ratelimit "lockd: cannot monitor" messages 

When lockd can't talk to a remote statd, it'll spew a warning message
to the ring buffer. If the application is really hammering on locks
however, it's possible for that message to spam the logs. Ratelimit it
to minimize the potential for harm.

Reported-by: Ian Collier <imc@cs.ox.ac.uk>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Jeff Layton 2014-10-31 08:28:29 -04:00 committed by J. Bruce Fields
parent eb63192bb8
commit 9af94fc4e4
1 changed files with 1 additions and 1 deletions
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2
fs/lockd/mon.c
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@ -214,7 +214,7 @@ int nsm_monitor(const struct nlm_host *host)
if (unlikely(res.status != 0)) if (unlikely(res.status != 0))
status = -EIO; status = -EIO;
if (unlikely(status < 0)) { if (unlikely(status < 0)) {
printk(KERN_NOTICE "lockd: cannot monitor %s\n", nsm->sm_name); pr_notice_ratelimited("lockd: cannot monitor %s\n", nsm->sm_name);
return status; return status;
} }