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2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390 
 kernel/fs/nfs/nfs3proc.c
....@@ -110,10 +110,15 @@
110110 		.rpc_resp	= fattr,
111111 	};
112112 	int	status;
113
+	unsigned short task_flags = 0;
114
+
115
+	/* Is this is an attribute revalidation, subject to softreval? */
116
+	if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
117
+		task_flags |= RPC_TASK_TIMEOUT;
113118 
114119 	dprintk("NFS call  getattr\n");
115120 	nfs_fattr_init(fattr);
116
-	status = rpc_call_sync(server->client, &msg, 0);
121
+	status = rpc_call_sync(server->client, &msg, task_flags);
117122 	dprintk("NFS reply getattr: %d\n", status);
118123 	return status;
119124 }
....@@ -140,23 +145,23 @@
140145 	nfs_fattr_init(fattr);
141146 	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
142147 	if (status == 0) {
148
+		nfs_setattr_update_inode(inode, sattr, fattr);
143149 		if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
144150 			nfs_zap_acl_cache(inode);
145
-		nfs_setattr_update_inode(inode, sattr, fattr);
146151 	}
147152 	dprintk("NFS reply setattr: %d\n", status);
148153 	return status;
149154 }
150155 
151156 static int
152
-nfs3_proc_lookup(struct inode *dir, const struct qstr *name,
157
+nfs3_proc_lookup(struct inode *dir, struct dentry *dentry,
153158 		 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
154159 		 struct nfs4_label *label)
155160 {
156161 	struct nfs3_diropargs	arg = {
157162 		.fh		= NFS_FH(dir),
158
-		.name		= name->name,
159
-		.len		= name->len
163
+		.name		= dentry->d_name.name,
164
+		.len		= dentry->d_name.len
160165 	};
161166 	struct nfs3_diropres	res = {
162167 		.fh		= fhandle,
....@@ -168,20 +173,25 @@
168173 		.rpc_resp	= &res,
169174 	};
170175 	int			status;
176
+	unsigned short task_flags = 0;
171177 
172
-	dprintk("NFS call  lookup %s\n", name->name);
178
+	/* Is this is an attribute revalidation, subject to softreval? */
179
+	if (nfs_lookup_is_soft_revalidate(dentry))
180
+		task_flags |= RPC_TASK_TIMEOUT;
181
+
173182 	res.dir_attr = nfs_alloc_fattr();
174183 	if (res.dir_attr == NULL)
175184 		return -ENOMEM;
176185 
186
+	dprintk("NFS call  lookup %pd2\n", dentry);
177187 	nfs_fattr_init(fattr);
178
-	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
188
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
179189 	nfs_refresh_inode(dir, res.dir_attr);
180190 	if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
181191 		msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
182192 		msg.rpc_argp = fhandle;
183193 		msg.rpc_resp = fattr;
184
-		status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
194
+		status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
185195 	}
186196 	nfs_free_fattr(res.dir_attr);
187197 	dprintk("NFS reply lookup: %d\n", status);
....@@ -279,15 +289,17 @@
279289 	return data;
280290 }
281291 
282
-static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
292
+static struct dentry *
293
+nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
283294 {
284295 	int status;
285296 
286297 	status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
287298 	nfs_post_op_update_inode(dir, data->res.dir_attr);
288
-	if (status == 0)
289
-		status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
290
-	return status;
299
+	if (status != 0)
300
+		return ERR_PTR(status);
301
+
302
+	return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr, NULL);
291303 }
292304 
293305 static void nfs3_free_createdata(struct nfs3_createdata *data)
....@@ -304,6 +316,7 @@
304316 {
305317 	struct posix_acl *default_acl, *acl;
306318 	struct nfs3_createdata *data;
319
+	struct dentry *d_alias;
307320 	int status = -ENOMEM;
308321 
309322 	dprintk("NFS call  create %pd\n", dentry);
....@@ -330,7 +343,8 @@
330343 		goto out;
331344 
332345 	for (;;) {
333
-		status = nfs3_do_create(dir, dentry, data);
346
+		d_alias = nfs3_do_create(dir, dentry, data);
347
+		status = PTR_ERR_OR_ZERO(d_alias);
334348 
335349 		if (status != -ENOTSUPP)
336350 			break;
....@@ -355,6 +369,9 @@
355369 	if (status != 0)
356370 		goto out_release_acls;
357371 
372
+	if (d_alias)
373
+		dentry = d_alias;
374
+
358375 	/* When we created the file with exclusive semantics, make
359376 	 * sure we set the attributes afterwards. */
360377 	if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
....@@ -372,11 +389,13 @@
372389 		nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
373390 		dprintk("NFS reply setattr (post-create): %d\n", status);
374391 		if (status != 0)
375
-			goto out_release_acls;
392
+			goto out_dput;
376393 	}
377394 
378395 	status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
379396 
397
+out_dput:
398
+	dput(d_alias);
380399 out_release_acls:
381400 	posix_acl_release(acl);
382401 	posix_acl_release(default_acl);
....@@ -504,6 +523,7 @@
504523 		  unsigned int len, struct iattr *sattr)
505524 {
506525 	struct nfs3_createdata *data;
526
+	struct dentry *d_alias;
507527 	int status = -ENOMEM;
508528 
509529 	if (len > NFS3_MAXPATHLEN)
....@@ -522,7 +542,11 @@
522542 	data->arg.symlink.pathlen = len;
523543 	data->arg.symlink.sattr = sattr;
524544 
525
-	status = nfs3_do_create(dir, dentry, data);
545
+	d_alias = nfs3_do_create(dir, dentry, data);
546
+	status = PTR_ERR_OR_ZERO(d_alias);
547
+
548
+	if (status == 0)
549
+		dput(d_alias);
526550 
527551 	nfs3_free_createdata(data);
528552 out:
....@@ -535,6 +559,7 @@
535559 {
536560 	struct posix_acl *default_acl, *acl;
537561 	struct nfs3_createdata *data;
562
+	struct dentry *d_alias;
538563 	int status = -ENOMEM;
539564 
540565 	dprintk("NFS call  mkdir %pd\n", dentry);
....@@ -553,12 +578,18 @@
553578 	data->arg.mkdir.len = dentry->d_name.len;
554579 	data->arg.mkdir.sattr = sattr;
555580 
556
-	status = nfs3_do_create(dir, dentry, data);
581
+	d_alias = nfs3_do_create(dir, dentry, data);
582
+	status = PTR_ERR_OR_ZERO(d_alias);
583
+
557584 	if (status != 0)
558585 		goto out_release_acls;
559586 
587
+	if (d_alias)
588
+		dentry = d_alias;
589
+
560590 	status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
561591 
592
+	dput(d_alias);
562593 out_release_acls:
563594 	posix_acl_release(acl);
564595 	posix_acl_release(default_acl);
....@@ -607,7 +638,7 @@
607638  * readdirplus.
608639  */
609640 static int
610
-nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
641
+nfs3_proc_readdir(struct dentry *dentry, const struct cred *cred,
611642 		  u64 cookie, struct page **pages, unsigned int count, bool plus)
612643 {
613644 	struct inode		*dir = d_inode(dentry);
....@@ -628,7 +659,7 @@
628659 		.rpc_proc	= &nfs3_procedures[NFS3PROC_READDIR],
629660 		.rpc_argp	= &arg,
630661 		.rpc_resp	= &res,
631
-		.rpc_cred	= cred
662
+		.rpc_cred	= cred,
632663 	};
633664 	int status = -ENOMEM;
634665 
....@@ -660,6 +691,7 @@
660691 {
661692 	struct posix_acl *default_acl, *acl;
662693 	struct nfs3_createdata *data;
694
+	struct dentry *d_alias;
663695 	int status = -ENOMEM;
664696 
665697 	dprintk("NFS call  mknod %pd %u:%u\n", dentry,
....@@ -698,12 +730,17 @@
698730 		goto out_release_acls;
699731 	}
700732 
701
-	status = nfs3_do_create(dir, dentry, data);
733
+	d_alias = nfs3_do_create(dir, dentry, data);
734
+	status = PTR_ERR_OR_ZERO(d_alias);
702735 	if (status != 0)
703736 		goto out_release_acls;
704737 
738
+	if (d_alias)
739
+		dentry = d_alias;
740
+
705741 	status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
706742 
743
+	dput(d_alias);
707744 out_release_acls:
708745 	posix_acl_release(acl);
709746 	posix_acl_release(default_acl);
....@@ -786,12 +823,16 @@
786823 static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
787824 {
788825 	struct inode *inode = hdr->inode;
826
+	struct nfs_server *server = NFS_SERVER(inode);
789827 
790828 	if (hdr->pgio_done_cb != NULL)
791829 		return hdr->pgio_done_cb(task, hdr);
792830 
793831 	if (nfs3_async_handle_jukebox(task, inode))
794832 		return -EAGAIN;
833
+
834
+	if (task->tk_status >= 0 && !server->read_hdrsize)
835
+		cmpxchg(&server->read_hdrsize, 0, hdr->res.replen);
795836 
796837 	nfs_invalidate_atime(inode);
797838 	nfs_refresh_inode(inode, &hdr->fattr);
....@@ -802,6 +843,7 @@
802843 				 struct rpc_message *msg)
803844 {
804845 	msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
846
+	hdr->args.replen = NFS_SERVER(hdr->inode)->read_hdrsize;
805847 }
806848 
807849 static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
....@@ -958,7 +1000,7 @@
9581000 	.nlmclnt_ops	= &nlmclnt_fl_close_lock_ops,
9591001 	.getroot	= nfs3_proc_get_root,
9601002 	.submount	= nfs_submount,
961
-	.try_mount	= nfs_try_mount,
1003
+	.try_get_tree	= nfs_try_get_tree,
9621004 	.getattr	= nfs3_proc_getattr,
9631005 	.setattr	= nfs3_proc_setattr,
9641006 	.lookup		= nfs3_proc_lookup,