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authorFred Isaman <iisaman@netapp.com>2011-01-06 11:36:32 +0000
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-01-06 14:46:32 -0500
commitf7e8917a67980924651a9e244510e63ef05c7755 (patch)
treefb00db5ef8b3b26793fae7a1186f1cd16205ab9d /fs/nfs/client.c
parent36840370845629e6cb4324d1dd4aff6778670503 (diff)
pnfs: layout roc code
A layout can request return-on-close. How this interacts with the forgetful model of never sending LAYOUTRETURNS is a bit ambiguous. We forget any layouts marked roc, and wait for them to be completely forgotten before continuing with the close. In addition, to compensate for races with any inflight LAYOUTGETs, and the fact that we do not get any layout stateid back from the server, we set the barrier to the worst case scenario of current_seqid + number of outstanding LAYOUTGETS. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/client.c')
-rw-r--r--fs/nfs/client.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 11eb9934c74..684b6777119 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -244,6 +244,11 @@ static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
idr_remove(&cb_ident_idr, clp->cl_cb_ident);
}
+static void pnfs_init_server(struct nfs_server *server)
+{
+ rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");
+}
+
#else
static void nfs4_shutdown_client(struct nfs_client *clp)
{
@@ -256,6 +261,11 @@ void nfs_cleanup_cb_ident_idr(void)
static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
{
}
+
+static void pnfs_init_server(struct nfs_server *server)
+{
+}
+
#endif /* CONFIG_NFS_V4 */
/*
@@ -1024,6 +1034,8 @@ static struct nfs_server *nfs_alloc_server(void)
return NULL;
}
+ pnfs_init_server(server);
+
return server;
}