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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/nfs/nfs4proc.c
..
..
@@ -130,6 +130,11 @@
130
130
 	if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
131
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 		return NULL;
132
132
 
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+	label->lfs = 0;
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+	label->pi = 0;
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+	label->len = 0;
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+	label->label = NULL;
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+
133
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 	err = security_dentry_init_security(dentry, sattr->ia_mode,
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 				&dentry->d_name, (void **)&label->label, &label->len);
135
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 	if (err == 0)
..
..
@@ -921,6 +926,7 @@
921
926
 out_noaction:
922
927
 	return ret;
923
928
 session_recover:
929
+	set_bit(NFS4_SLOT_TBL_DRAINING, &session->fc_slot_table.slot_tbl_state);
924
930
 	nfs4_schedule_session_recovery(session, status);
925
931
 	dprintk("%s ERROR: %d Reset session\n", __func__, status);
926
932
 	nfs41_sequence_free_slot(res);
..
..
@@ -1970,8 +1976,7 @@
1970
1976
 	if (!data->rpc_done) {
1971
1977
 		if (data->rpc_status)
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 			return ERR_PTR(data->rpc_status);
1973
-		/* cached opens have already been processed */
1974
-		goto update;
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+		return nfs4_try_open_cached(data);
1975
1980
 	}
1976
1981
 
1977
1982
 	ret = nfs_refresh_inode(inode, &data->f_attr);
..
..
@@ -1980,7 +1985,7 @@
1980
1985
 
1981
1986
 	if (data->o_res.delegation_type != 0)
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 		nfs4_opendata_check_deleg(data, state);
1983
-update:
1988
+
1984
1989
 	if (!update_open_stateid(state, &data->o_res.stateid,
1985
1990
 				NULL, data->o_arg.fmode))
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1991
 		return ERR_PTR(-EAGAIN);
..
..
@@ -2121,18 +2126,18 @@
2121
2126
 }
2122
2127
 
2123
2128
 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata,
2124
-		fmode_t fmode)
2129
+				    fmode_t fmode)
2125
2130
 {
2126
2131
 	struct nfs4_state *newstate;
2132
+	struct nfs_server *server = NFS_SB(opendata->dentry->d_sb);
2133
+	int openflags = opendata->o_arg.open_flags;
2127
2134
 	int ret;
2128
2135
 
2129
2136
 	if (!nfs4_mode_match_open_stateid(opendata->state, fmode))
2130
2137
 		return 0;
2131
-	opendata->o_arg.open_flags = 0;
2132
2138
 	opendata->o_arg.fmode = fmode;
2133
-	opendata->o_arg.share_access = nfs4_map_atomic_open_share(
2134
-			NFS_SB(opendata->dentry->d_sb),
2135
-			fmode, 0);
2139
+	opendata->o_arg.share_access =
2140
+		nfs4_map_atomic_open_share(server, fmode, openflags);
2136
2141
 	memset(&opendata->o_res, 0, sizeof(opendata->o_res));
2137
2142
 	memset(&opendata->c_res, 0, sizeof(opendata->c_res));
2138
2143
 	nfs4_init_opendata_res(opendata);
..
..
@@ -2708,10 +2713,15 @@
2708
2713
 	struct nfs4_opendata *opendata;
2709
2714
 	int ret;
2710
2715
 
2711
-	opendata = nfs4_open_recoverdata_alloc(ctx, state,
2712
-			NFS4_OPEN_CLAIM_FH);
2716
+	opendata = nfs4_open_recoverdata_alloc(ctx, state, NFS4_OPEN_CLAIM_FH);
2713
2717
 	if (IS_ERR(opendata))
2714
2718
 		return PTR_ERR(opendata);
2719
+	/*
2720
+	 * We're not recovering a delegation, so ask for no delegation.
2721
+	 * Otherwise the recovery thread could deadlock with an outstanding
2722
+	 * delegation return.
2723
+	 */
2724
+	opendata->o_arg.open_flags = O_DIRECT;
2715
2725
 	ret = nfs4_open_recover(opendata, state);
2716
2726
 	if (ret == -ESTALE)
2717
2727
 		d_drop(ctx->dentry);
..
..
@@ -3793,7 +3803,7 @@
3793
3803
 		int open_flags, struct iattr *attr, int *opened)
3794
3804
 {
3795
3805
 	struct nfs4_state *state;
3796
-	struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
3806
+	struct nfs4_label l, *label;
3797
3807
 
3798
3808
 	label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
3799
3809
 
..
..
@@ -4557,7 +4567,7 @@
4557
4567
 		 int flags)
4558
4568
 {
4559
4569
 	struct nfs_server *server = NFS_SERVER(dir);
4560
-	struct nfs4_label l, *ilabel = NULL;
4570
+	struct nfs4_label l, *ilabel;
4561
4571
 	struct nfs_open_context *ctx;
4562
4572
 	struct nfs4_state *state;
4563
4573
 	int status = 0;
..
..
@@ -4916,7 +4926,7 @@
4916
4926
 	struct nfs4_exception exception = {
4917
4927
 		.interruptible = true,
4918
4928
 	};
4919
-	struct nfs4_label l, *label = NULL;
4929
+	struct nfs4_label l, *label;
4920
4930
 	int err;
4921
4931
 
4922
4932
 	label = nfs4_label_init_security(dir, dentry, sattr, &l);
..
..
@@ -4957,7 +4967,7 @@
4957
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 	struct nfs4_exception exception = {
4958
4968
 		.interruptible = true,
4959
4969
 	};
4960
-	struct nfs4_label l, *label = NULL;
4970
+	struct nfs4_label l, *label;
4961
4971
 	int err;
4962
4972
 
4963
4973
 	label = nfs4_label_init_security(dir, dentry, sattr, &l);
..
..
@@ -5078,7 +5088,7 @@
5078
5088
 	struct nfs4_exception exception = {
5079
5089
 		.interruptible = true,
5080
5090
 	};
5081
-	struct nfs4_label l, *label = NULL;
5091
+	struct nfs4_label l, *label;
5082
5092
 	int err;
5083
5093
 
5084
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 	label = nfs4_label_init_security(dir, dentry, sattr, &l);
..
..
@@ -5854,9 +5864,8 @@
5854
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 out_ok:
5855
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 	ret = res.acl_len;
5856
5866
 out_free:
5857
-	for (i = 0; i < npages; i++)
5858
-		if (pages[i])
5859
-			__free_page(pages[i]);
5867
+	while (--i >= 0)
5868
+		__free_page(pages[i]);
5860
5869
 	if (res.acl_scratch)
5861
5870
 		__free_page(res.acl_scratch);
5862
5871
 	kfree(pages);
..
..
@@ -7037,8 +7046,15 @@
7037
7046
 		} else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid))
7038
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 			goto out_restart;
7039
7048
 		break;
7040
-	case -NFS4ERR_BAD_STATEID:
7041
7049
 	case -NFS4ERR_OLD_STATEID:
7050
+		if (data->arg.new_lock_owner != 0 &&
7051
+			nfs4_refresh_open_old_stateid(&data->arg.open_stateid,
7052
+					lsp->ls_state))
7053
+			goto out_restart;
7054
+		if (nfs4_refresh_lock_old_stateid(&data->arg.lock_stateid, lsp))
7055
+			goto out_restart;
7056
+		fallthrough;
7057
+	case -NFS4ERR_BAD_STATEID:
7042
7058
 	case -NFS4ERR_STALE_STATEID:
7043
7059
 	case -NFS4ERR_EXPIRED:
7044
7060
 		if (data->arg.new_lock_owner != 0) {
..
..
@@ -10378,6 +10394,28 @@
10378
10394
 	return error + error2 + error3;
10379
10395
 }
10380
10396
 
10397
+static void nfs4_enable_swap(struct inode *inode)
10398
+{
10399
+	/* The state manager thread must always be running.
10400
+	 * It will notice the client is a swapper, and stay put.
10401
+	 */
10402
+	struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
10403
+
10404
+	nfs4_schedule_state_manager(clp);
10405
+}
10406
+
10407
+static void nfs4_disable_swap(struct inode *inode)
10408
+{
10409
+	/* The state manager thread will now exit once it is
10410
+	 * woken.
10411
+	 */
10412
+	struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
10413
+
10414
+	set_bit(NFS4CLNT_RUN_MANAGER, &clp->cl_state);
10415
+	clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
10416
+	wake_up_var(&clp->cl_state);
10417
+}
10418
+
10381
10419
 static const struct inode_operations nfs4_dir_inode_operations = {
10382
10420
 	.create		= nfs_create,
10383
10421
 	.lookup		= nfs_lookup,
..
..
@@ -10454,6 +10492,8 @@
10454
10492
 	.free_client	= nfs4_free_client,
10455
10493
 	.create_server	= nfs4_create_server,
10456
10494
 	.clone_server	= nfs_clone_server,
10495
+	.enable_swap	= nfs4_enable_swap,
10496
+	.disable_swap	= nfs4_disable_swap,
10457
10497
 };
10458
10498
 
10459
10499
 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {