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lockd: Add nlm_destroy_host_locked()

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Refactor the tail of nlm_gc_hosts() into nlm_destroy_host() so that
this logic can be used separately from garbage collection.

Rename it _locked() to document that it must be called with the hosts
cache mutex held.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2010-12-14 15:05:33 +00:00 committed by Trond Myklebust
parent a7952f4056
commit 723bb5b505
1 changed files with 11 additions and 8 deletions
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19
fs/lockd/host.c
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@ -231,16 +231,21 @@ out:
}
/*
* Destroy a host
* Destroy an nlm_host and free associated resources
*
* Caller must hold nlm_host_mutex.
*/
static void
nlm_destroy_host(struct nlm_host *host)
static void nlm_destroy_host_locked(struct nlm_host *host)
{
struct rpc_clnt *clnt;
dprintk("lockd: destroy host %s\n", host->h_name);
BUG_ON(!list_empty(&host->h_lockowners));
BUG_ON(atomic_read(&host->h_count));
hlist_del_init(&host->h_hash);
nsm_unmonitor(host);
nsm_release(host->h_nsmhandle);
@ -248,6 +253,8 @@ nlm_destroy_host(struct nlm_host *host)
if (clnt != NULL)
rpc_shutdown_client(clnt);
kfree(host);
nrhosts--;
}
/**
@ -589,11 +596,7 @@ nlm_gc_hosts(void)
host->h_inuse, host->h_expires);
continue;
}
dprintk("lockd: delete host %s\n", host->h_name);
hlist_del_init(&host->h_hash);
nlm_destroy_host(host);
nrhosts--;
nlm_destroy_host_locked(host);
}
next_gc = jiffies + NLM_HOST_COLLECT;