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Commit 9089f1b4 authored by Benny Halevy's avatar Benny Halevy Committed by J. Bruce Fields
Browse files

nfsd4: rename sessionid_lock to client_lock 



In preparation to share the lock's scope to both client
and session hash tables.

Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 5d4cec2f

fs/nfsd/nfs4state.c

+14 −12
Original line number Diff line number Diff line
@@ -250,6 +250,9 @@ unhash_delegation(struct nfs4_delegation *dp) 
 * SETCLIENTID state 

 */



/* client_lock protects the session hash table */

static DEFINE_SPINLOCK(client_lock);



/* Hash tables for nfs4_clientid state */

#define CLIENT_HASH_BITS                 4

#define CLIENT_HASH_SIZE                (1 << CLIENT_HASH_BITS)
@@ -368,7 +371,6 @@ static void release_openowner(struct nfs4_stateowner *sop) 
	nfs4_put_stateowner(sop);

}



static DEFINE_SPINLOCK(sessionid_lock);

#define SESSION_HASH_SIZE	512

static struct list_head sessionid_hashtbl[SESSION_HASH_SIZE];
@@ -566,10 +568,10 @@ alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp, 


	new->se_flags = cses->flags;

	kref_init(&new->se_ref);

	spin_lock(&sessionid_lock);

	spin_lock(&client_lock);

	list_add(&new->se_hash, &sessionid_hashtbl[idx]);

	list_add(&new->se_perclnt, &clp->cl_sessions);

	spin_unlock(&sessionid_lock);

	spin_unlock(&client_lock);



	status = nfs_ok;

out:
@@ -580,7 +582,7 @@ alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp, 
	goto out;

}



/* caller must hold sessionid_lock */

/* caller must hold client_lock */

static struct nfsd4_session *

find_in_sessionid_hashtbl(struct nfs4_sessionid *sessionid)

{
@@ -603,7 +605,7 @@ find_in_sessionid_hashtbl(struct nfs4_sessionid *sessionid) 
	return NULL;

}



/* caller must hold sessionid_lock */

/* caller must hold client_lock */

static void

unhash_session(struct nfsd4_session *ses)

{
@@ -614,9 +616,9 @@ unhash_session(struct nfsd4_session *ses) 
static void

release_session(struct nfsd4_session *ses)

{

	spin_lock(&sessionid_lock);

	spin_lock(&client_lock);

	unhash_session(ses);

	spin_unlock(&sessionid_lock);

	spin_unlock(&client_lock);

	nfsd4_put_session(ses);

}
@@ -1379,15 +1381,15 @@ nfsd4_destroy_session(struct svc_rqst *r, 
			return nfserr_not_only_op;

	}

	dump_sessionid(__func__, &sessionid->sessionid);

	spin_lock(&sessionid_lock);

	spin_lock(&client_lock);

	ses = find_in_sessionid_hashtbl(&sessionid->sessionid);

	if (!ses) {

		spin_unlock(&sessionid_lock);

		spin_unlock(&client_lock);

		goto out;

	}



	unhash_session(ses);

	spin_unlock(&sessionid_lock);

	spin_unlock(&client_lock);



	/* wait for callbacks */

	nfsd4_set_callback_client(ses->se_client, NULL);
@@ -1411,7 +1413,7 @@ nfsd4_sequence(struct svc_rqst *rqstp, 
	if (resp->opcnt != 1)

		return nfserr_sequence_pos;



	spin_lock(&sessionid_lock);

	spin_lock(&client_lock);

	status = nfserr_badsession;

	session = find_in_sessionid_hashtbl(&seq->sessionid);

	if (!session)
@@ -1454,7 +1456,7 @@ nfsd4_sequence(struct svc_rqst *rqstp, 
	/* Hold a session reference until done processing the compound. */

	if (cstate->session)

		nfsd4_get_session(cstate->session);

	spin_unlock(&sessionid_lock);

	spin_unlock(&client_lock);

	/* Renew the clientid on success and on replay */

	if (cstate->session) {

		nfs4_lock_state();