linux-kernel - [PATCH 12/15] nfsd: make close

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Message-ID: <20121113154919.12577.6199.stgit@localhost.localdomain>
Date:	Tue, 13 Nov 2012 18:49:19 +0300
From:	Stanislav Kinsbursky <skinsbursky@...allels.com>
To:	bfields@...ldses.org
Cc:	linux-nfs@...r.kernel.org, devel@...nvz.org,
	Trond.Myklebust@...app.com, linux-kernel@...r.kernel.org,
	jlayton@...hat.com
Subject: [PATCH 12/15] nfsd: make close_lru list per net

This list holds nfs4 clients (open) stateowner queue for last close replay,
which are network namespace aware. So let's make this list per network
namespace too.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@...allels.com>
---
 fs/nfsd/netns.h     |    4 ++++
 fs/nfsd/nfs4state.c |   18 +++++++-----------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index e9f9a51..f024fe2 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -71,8 +71,12 @@ struct nfsd_net {
 	/*
 	 * client_lru holds client queue ordered by nfs4_client.cl_time
 	 * for lease renewal.
+	 *
+	 * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
+	 * for last close replay.
 	 */
 	struct list_head client_lru;
+	struct list_head close_lru;
 };
 
 extern int nfsd_net_id;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 1861016..d55136e 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -402,12 +402,6 @@ static unsigned int clientstr_hashval(const char *name)
 }
 
 /*
- * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
- * for last close replay.
- */
-static struct list_head close_lru;
-
-/*
  * We store the NONE, READ, WRITE, and BOTH bits separately in the
  * st_{access,deny}_bmap field of the stateid, in order to track not
  * only what share bits are currently in force, but also what
@@ -2444,11 +2438,13 @@ static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp,
 }
 
 static void
-move_to_close_lru(struct nfs4_openowner *oo)
+move_to_close_lru(struct nfs4_openowner *oo, struct net *net)
 {
+	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+
 	dprintk("NFSD: move_to_close_lru nfs4_openowner %p\n", oo);
 
-	list_move_tail(&oo->oo_close_lru, &close_lru);
+	list_move_tail(&oo->oo_close_lru, &nn->close_lru);
 	oo->oo_time = get_seconds();
 }
 
@@ -3221,7 +3217,7 @@ nfs4_laundromat(void)
 		unhash_delegation(dp);
 	}
 	test_val = nfsd4_lease;
-	list_for_each_safe(pos, next, &close_lru) {
+	list_for_each_safe(pos, next, &nn->close_lru) {
 		oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
 		if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
 			u = oo->oo_time - cutoff;
@@ -3799,7 +3795,7 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 			 * little while to handle CLOSE replay.
 			 */
 			if (list_empty(&oo->oo_owner.so_stateids))
-				move_to_close_lru(oo);
+				move_to_close_lru(oo, SVC_NET(rqstp));
 		}
 	}
 out:
@@ -4701,7 +4697,6 @@ nfs4_state_init(void)
 	for (i = 0; i < FILE_HASH_SIZE; i++) {
 		INIT_LIST_HEAD(&file_hashtbl[i]);
 	}
-	INIT_LIST_HEAD(&close_lru);
 	INIT_LIST_HEAD(&del_recall_lru);
 }
 
@@ -4773,6 +4768,7 @@ static int nfs4_state_start_net(struct net *net)
 	for (i = 0; i < SESSION_HASH_SIZE; i++)
 		INIT_LIST_HEAD(&nn->sessionid_hashtbl[i]);
 	INIT_LIST_HEAD(&nn->client_lru);
+	INIT_LIST_HEAD(&nn->close_lru);
 
 	return 0;
 

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