Merge branch 'nfs-server-stable' of git://linux-nfs.org/~bfields/linux

* 'nfs-server-stable' of git://linux-nfs.org/~bfields/linux:
  knfsd: query filesystem for NFSv4 getattr of FATTR4_MAXNAME
  knfsd: nfsv4 delegation recall should take reference on client
  knfsd: don't shutdown callbacks until nfsv4 client is freed
  knfsd: let nfsd manage timing out its own leases
  knfsd: Add source address to sunrpc svc errors
  knfsd: 64 bit ino support for NFS server
  svcgss: move init code into separate function
  knfsd: remove code duplication in nfsd4_setclientid()
  nfsd warning fix
  knfsd: fix callback rpc cred
  knfsd: move nfsv4 slab creation/destruction to module init/exit
  knfsd: spawn kernel thread to probe callback channel
  knfsd: nfs4 name->id mapping not correctly parsing negative downcall
  knfsd: demote some printk()s to dprintk()s
  knfsd: cleanup of nfsd4 cmp_* functions
  knfsd: delete code made redundant by map_new_errors
  nfsd: fix horrible indentation in nfsd_setattr
  nfsd: remove unused cache_for_each macro
  nfsd: tone down inaccurate dprintk

fs/nfsd/nfs3xdr.c

@@ -174,9 +174,6 @@ static __be32 *
 encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
 	      struct kstat *stat)
 {
-	struct dentry	*dentry = fhp->fh_dentry;
-	struct timespec time;
-
 	*p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
 	*p++ = htonl((u32) stat->mode);
 	*p++ = htonl((u32) stat->nlink);
@@ -191,10 +188,9 @@ encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
 	*p++ = htonl((u32) MAJOR(stat->rdev));
 	*p++ = htonl((u32) MINOR(stat->rdev));
 	p = encode_fsid(p, fhp);
-	p = xdr_encode_hyper(p, (u64) stat->ino);
+	p = xdr_encode_hyper(p, stat->ino);
 	p = encode_time3(p, &stat->atime);
-	lease_get_mtime(dentry->d_inode, &time); 
-	p = encode_time3(p, &time);
+	p = encode_time3(p, &stat->mtime);
 	p = encode_time3(p, &stat->ctime);
 
 	return p;
@@ -203,31 +199,9 @@ encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
 static __be32 *
 encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
 {
-	struct inode	*inode = fhp->fh_dentry->d_inode;
-
 	/* Attributes to follow */
 	*p++ = xdr_one;
-
-	*p++ = htonl(nfs3_ftypes[(fhp->fh_post_mode & S_IFMT) >> 12]);
-	*p++ = htonl((u32) fhp->fh_post_mode);
-	*p++ = htonl((u32) fhp->fh_post_nlink);
-	*p++ = htonl((u32) nfsd_ruid(rqstp, fhp->fh_post_uid));
-	*p++ = htonl((u32) nfsd_rgid(rqstp, fhp->fh_post_gid));
-	if (S_ISLNK(fhp->fh_post_mode) && fhp->fh_post_size > NFS3_MAXPATHLEN) {
-		p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
-	} else {
-		p = xdr_encode_hyper(p, (u64) fhp->fh_post_size);
-	}
-	p = xdr_encode_hyper(p, ((u64)fhp->fh_post_blocks) << 9);
-	*p++ = fhp->fh_post_rdev[0];
-	*p++ = fhp->fh_post_rdev[1];
-	p = encode_fsid(p, fhp);
-	p = xdr_encode_hyper(p, (u64) inode->i_ino);
-	p = encode_time3(p, &fhp->fh_post_atime);
-	p = encode_time3(p, &fhp->fh_post_mtime);
-	p = encode_time3(p, &fhp->fh_post_ctime);
-
-	return p;
+	return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr);
 }
 
 /*
@@ -246,6 +220,7 @@ encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
 		err = vfs_getattr(fhp->fh_export->ex_mnt, dentry, &stat);
 		if (!err) {
 			*p++ = xdr_one;		/* attributes follow */
+			lease_get_mtime(dentry->d_inode, &stat.mtime);
 			return encode_fattr3(rqstp, p, fhp, &stat);
 		}
 	}
@@ -284,6 +259,23 @@ encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
 	return encode_post_op_attr(rqstp, p, fhp);
 }
 
+/*
+ * Fill in the post_op attr for the wcc data
+ */
+void fill_post_wcc(struct svc_fh *fhp)
+{
+	int err;
+
+	if (fhp->fh_post_saved)
+		printk("nfsd: inode locked twice during operation.\n");
+
+	err = vfs_getattr(fhp->fh_export->ex_mnt, fhp->fh_dentry,
+			&fhp->fh_post_attr);
+	if (err)
+		fhp->fh_post_saved = 0;
+	else
+		fhp->fh_post_saved = 1;
+}
 
 /*
  * XDR decode functions
@@ -643,8 +635,11 @@ int
 nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p,
 					struct nfsd3_attrstat *resp)
 {
-	if (resp->status == 0)
+	if (resp->status == 0) {
+		lease_get_mtime(resp->fh.fh_dentry->d_inode,
+				&resp->stat.mtime);
 		p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat);
+	}
 	return xdr_ressize_check(rqstp, p);
 }
 
@@ -802,7 +797,7 @@ nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p,
 
 static __be32 *
 encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name,
-	     int namlen, ino_t ino)
+	     int namlen, u64 ino)
 {
 	*p++ = xdr_one;				 /* mark entry present */
 	p    = xdr_encode_hyper(p, ino);	 /* file id */
@@ -873,7 +868,7 @@ compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp,
 #define NFS3_ENTRYPLUS_BAGGAGE	(1 + 21 + 1 + (NFS3_FHSIZE >> 2))
 static int
 encode_entry(struct readdir_cd *ccd, const char *name, int namlen,
-	     loff_t offset, ino_t ino, unsigned int d_type, int plus)
+	     loff_t offset, u64 ino, unsigned int d_type, int plus)
 {
 	struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres,
 		       					common);

fs/nfsd/nfs4callback.c

@@ -39,6 +39,7 @@
 #include <linux/errno.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
+#include <linux/kthread.h>
 #include <linux/sunrpc/xdr.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/sunrpc/clnt.h>
@@ -343,26 +344,28 @@ static struct rpc_version *	nfs_cb_version[] = {
 	&nfs_cb_version4,
 };
 
-/*
- * Use the SETCLIENTID credential
- */
-static struct rpc_cred *
-nfsd4_lookupcred(struct nfs4_client *clp, int taskflags)
+/* Reference counting, callback cleanup, etc., all look racy as heck.
+ * And why is cb_set an atomic? */
+
+static int do_probe_callback(void *data)
 {
-        struct auth_cred acred;
-	struct rpc_clnt *clnt = clp->cl_callback.cb_client;
-	struct rpc_cred *ret;
-
-        get_group_info(clp->cl_cred.cr_group_info);
-        acred.uid = clp->cl_cred.cr_uid;
-        acred.gid = clp->cl_cred.cr_gid;
-        acred.group_info = clp->cl_cred.cr_group_info;
-
-        dprintk("NFSD:     looking up %s cred\n",
-                clnt->cl_auth->au_ops->au_name);
-        ret = rpcauth_lookup_credcache(clnt->cl_auth, &acred, taskflags);
-        put_group_info(clp->cl_cred.cr_group_info);
-        return ret;
+	struct nfs4_client *clp = data;
+	struct nfs4_callback *cb = &clp->cl_callback;
+	struct rpc_message msg = {
+		.rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
+		.rpc_argp       = clp,
+	};
+	int status;
+
+	status = rpc_call_sync(cb->cb_client, &msg, RPC_TASK_SOFT);
+
+	if (status) {
+		rpc_shutdown_client(cb->cb_client);
+		cb->cb_client = NULL;
+	} else
+		atomic_set(&cb->cb_set, 1);
+	put_nfs4_client(clp);
+	return 0;
 }
 
 /*
@@ -390,11 +393,7 @@ nfsd4_probe_callback(struct nfs4_client *clp)
 		.authflavor	= RPC_AUTH_UNIX,	/* XXX: need AUTH_GSS... */
 		.flags		= (RPC_CLNT_CREATE_NOPING),
 	};
-	struct rpc_message msg = {
-		.rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
-		.rpc_argp       = clp,
-	};
-	int status;
+	struct task_struct *t;
 
 	if (atomic_read(&cb->cb_set))
 		return;
@@ -426,16 +425,11 @@ nfsd4_probe_callback(struct nfs4_client *clp)
 	/* the task holds a reference to the nfs4_client struct */
 	atomic_inc(&clp->cl_count);
 
-	msg.rpc_cred = nfsd4_lookupcred(clp,0);
-	if (IS_ERR(msg.rpc_cred))
-		goto out_release_clp;
-	status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_ASYNC, &nfs4_cb_null_ops, NULL);
-	put_rpccred(msg.rpc_cred);
+	t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe");
 
-	if (status != 0) {
-		dprintk("NFSD: asynchronous NFSPROC4_CB_NULL failed!\n");
+	if (IS_ERR(t))
 		goto out_release_clp;
-	}
+
 	return;
 
 out_release_clp:
@@ -447,30 +441,6 @@ nfsd4_probe_callback(struct nfs4_client *clp)
 		(int)clp->cl_name.len, clp->cl_name.data);
 }
 
-static void
-nfs4_cb_null(struct rpc_task *task, void *dummy)
-{
-	struct nfs4_client *clp = (struct nfs4_client *)task->tk_msg.rpc_argp;
-	struct nfs4_callback *cb = &clp->cl_callback;
-	__be32 addr = htonl(cb->cb_addr);
-
-	dprintk("NFSD: nfs4_cb_null task->tk_status %d\n", task->tk_status);
-
-	if (task->tk_status < 0) {
-		dprintk("NFSD: callback establishment to client %.*s failed\n",
-			(int)clp->cl_name.len, clp->cl_name.data);
-		goto out;
-	}
-	atomic_set(&cb->cb_set, 1);
-	dprintk("NFSD: callback set to client %u.%u.%u.%u\n", NIPQUAD(addr));
-out:
-	put_nfs4_client(clp);
-}
-
-static const struct rpc_call_ops nfs4_cb_null_ops = {
-	.rpc_call_done = nfs4_cb_null,
-};
-
 /*
  * called with dp->dl_count inc'ed.
  * nfs4_lock_state() may or may not have been called.
@@ -491,10 +461,6 @@ nfsd4_cb_recall(struct nfs4_delegation *dp)
 	if ((!atomic_read(&clp->cl_callback.cb_set)) || !clnt)
 		return;
 
-	msg.rpc_cred = nfsd4_lookupcred(clp, 0);
-	if (IS_ERR(msg.rpc_cred))
-		goto out;
-
 	cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */
 	cbr->cbr_dp = dp;
 
@@ -515,13 +481,12 @@ nfsd4_cb_recall(struct nfs4_delegation *dp)
 		status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
 	}
 out_put_cred:
-	put_rpccred(msg.rpc_cred);
-out:
 	if (status == -EIO)
 		atomic_set(&clp->cl_callback.cb_set, 0);
 	/* Success or failure, now we're either waiting for lease expiration
 	 * or deleg_return. */
 	dprintk("NFSD: nfs4_cb_recall: dp %p dl_flock %p dl_count %d\n",dp, dp->dl_flock, atomic_read(&dp->dl_count));
+	put_nfs4_client(clp);
 	nfs4_put_delegation(dp);
 	return;
 }

fs/nfsd/nfs4idmap.c

@@ -207,6 +207,7 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 {
 	struct ent ent, *res;
 	char *buf1, *bp;
+	int len;
 	int error = -EINVAL;
 
 	if (buf[buflen - 1] != '\n')
@@ -248,10 +249,11 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 		goto out;
 
 	/* Name */
-	error = qword_get(&buf, buf1, PAGE_SIZE);
-	if (error == -EINVAL)
+	error = -EINVAL;
+	len = qword_get(&buf, buf1, PAGE_SIZE);
+	if (len < 0)
 		goto out;
-	if (error == -ENOENT)
+	if (len == 0)
 		set_bit(CACHE_NEGATIVE, &ent.h.flags);
 	else {
 		if (error >= IDMAP_NAMESZ) {

fs/nfsd/nfs4proc.c

@@ -238,12 +238,12 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 			break;
              	case NFS4_OPEN_CLAIM_DELEGATE_PREV:
 			open->op_stateowner->so_confirmed = 1;
-			printk("NFSD: unsupported OPEN claim type %d\n",
+			dprintk("NFSD: unsupported OPEN claim type %d\n",
 				open->op_claim_type);
 			status = nfserr_notsupp;
 			goto out;
 		default:
-			printk("NFSD: Invalid OPEN claim type %d\n",
+			dprintk("NFSD: Invalid OPEN claim type %d\n",
 				open->op_claim_type);
 			status = nfserr_inval;
 			goto out;