NSM: Add dprintk() calls in nsm_find and nsm_release
Chuck Lever [Sat, 6 Dec 2008 00:02:53 +0000 (19:02 -0500)]
Introduce some dprintk() calls in fs/lockd/mon.c that are enabled by
the NLMDBG_MONITOR flag.  These report when we find, create, and
release nsm_handles.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

fs/lockd/mon.c

index 8e68e79..3825545 100644 (file)
@@ -249,10 +249,15 @@ retry:
                atomic_inc(&pos->sm_count);
                kfree(nsm);
                nsm = pos;
+               dprintk("lockd: found nsm_handle for %s (%s), cnt %d\n",
+                               pos->sm_name, pos->sm_addrbuf,
+                               atomic_read(&pos->sm_count));
                goto found;
        }
        if (nsm) {
                list_add(&nsm->sm_link, &nsm_handles);
+               dprintk("lockd: created nsm_handle for %s (%s)\n",
+                               nsm->sm_name, nsm->sm_addrbuf);
                goto found;
        }
        spin_unlock(&nsm_lock);
@@ -291,6 +296,8 @@ void nsm_release(struct nsm_handle *nsm)
        if (atomic_dec_and_lock(&nsm->sm_count, &nsm_lock)) {
                list_del(&nsm->sm_link);
                spin_unlock(&nsm_lock);
+               dprintk("lockd: destroyed nsm_handle for %s (%s)\n",
+                               nsm->sm_name, nsm->sm_addrbuf);
                kfree(nsm);
        }
 }