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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/nfsd/nfs4xdr.c
..
..
@@ -3405,6 +3405,17 @@
3405
3405
 	case nfserr_noent:
3406
3406
 		xdr_truncate_encode(xdr, start_offset);
3407
3407
 		goto skip_entry;
3408
+	case nfserr_jukebox:
3409
+		/*
3410
+		 * The pseudoroot should only display dentries that lead to
3411
+		 * exports. If we get EJUKEBOX here, then we can't tell whether
3412
+		 * this entry should be included. Just fail the whole READDIR
3413
+		 * with NFS4ERR_DELAY in that case, and hope that the situation
3414
+		 * will resolve itself by the client's next attempt.
3415
+		 */
3416
+		if (cd->rd_fhp->fh_export->ex_flags & NFSEXP_V4ROOT)
3417
+			goto fail;
3418
+		fallthrough;
3408
3419
 	default:
3409
3420
 		/*
3410
3421
 		 * If the client requested the RDATTR_ERROR attribute,
..
..
@@ -3694,7 +3705,7 @@
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3705
 		p = xdr_reserve_space(xdr, 32);
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3706
 		if (!p)
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3707
 			return nfserr_resource;
3697
-		*p++ = cpu_to_be32(0);
3708
+		*p++ = cpu_to_be32(open->op_recall);
3698
3709
 
3699
3710
 		/*
3700
3711
 		 * TODO: space_limit's in delegations
..
..
@@ -4396,20 +4407,17 @@
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4407
 
4397
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 	*p++ = cpu_to_be32(gdev->gd_layout_type);
4398
4409
 
4399
-	/* If maxcount is 0 then just update notifications */
4400
-	if (gdev->gd_maxcount != 0) {
4401
-		ops = nfsd4_layout_ops[gdev->gd_layout_type];
4402
-		nfserr = ops->encode_getdeviceinfo(xdr, gdev);
4403
-		if (nfserr) {
4404
-			/*
4405
-			 * We don't bother to burden the layout drivers with
4406
-			 * enforcing gd_maxcount, just tell the client to
4407
-			 * come back with a bigger buffer if it's not enough.
4408
-			 */
4409
-			if (xdr->buf->len + 4 > gdev->gd_maxcount)
4410
-				goto toosmall;
4411
-			return nfserr;
4412
-		}
4410
+	ops = nfsd4_layout_ops[gdev->gd_layout_type];
4411
+	nfserr = ops->encode_getdeviceinfo(xdr, gdev);
4412
+	if (nfserr) {
4413
+		/*
4414
+		 * We don't bother to burden the layout drivers with
4415
+		 * enforcing gd_maxcount, just tell the client to
4416
+		 * come back with a bigger buffer if it's not enough.
4417
+		 */
4418
+		if (xdr->buf->len + 4 > gdev->gd_maxcount)
4419
+			goto toosmall;
4420
+		return nfserr;
4413
4421
 	}
4414
4422
 
4415
4423
 	if (gdev->gd_notify_types) {