From: J. Bruce Fields <bfields@redhat.com>
Date: Sat, 11 Dec 2010 00:02:49 +0000 (-0500)
Subject: nfsd4: give out delegations more quickly in 4.1 case
X-Git-Tag: v2.6.38-rc1~51^2~7
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=14a24e99f4f506265b634c1cd04eca6394f49dbc;p=linux.git

nfsd4: give out delegations more quickly in 4.1 case

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 00a50b8ac878..408957cf6016 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2627,6 +2627,19 @@ nfs4_set_claim_prev(struct nfsd4_open *open)
 	open->op_stateowner->so_client->cl_firststate = 1;
 }
 
+/* Should we give out recallable state?: */
+static bool nfsd4_cb_channel_good(struct nfs4_client *clp)
+{
+	if (clp->cl_cb_state == NFSD4_CB_UP)
+		return true;
+	/*
+	 * In the sessions case, since we don't have to establish a
+	 * separate connection for callbacks, we assume it's OK
+	 * until we hear otherwise:
+	 */
+	return clp->cl_minorversion && clp->cl_cb_state == NFSD4_CB_UNKNOWN;
+}
+
 /*
  * Attempt to hand out a delegation.
  */
@@ -2635,11 +2648,11 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
 {
 	struct nfs4_delegation *dp;
 	struct nfs4_stateowner *sop = stp->st_stateowner;
-	/* XXX: or unknown and nfsv4.1: */
-	int cb_up = (sop->so_client->cl_cb_state == NFSD4_CB_UP);
+	int cb_up;
 	struct file_lock *fl;
 	int status, flag = 0;
 
+	cb_up = nfsd4_cb_channel_good(sop->so_client);
 	flag = NFS4_OPEN_DELEGATE_NONE;
 	open->op_recall = 0;
 	switch (open->op_claim_type) {