add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/gfs2/dentry.c
..
..
@@ -1,10 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
3
4
  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
4
- *
5
- * This copyrighted material is made available to anyone wishing to use,
6
- * modify, copy, or redistribute it subject to the terms and conditions
7
- * of the GNU General Public License version 2.
8
5
  */
9
6
 
10
7
 #include <linux/spinlock.h>
..
..
@@ -41,7 +38,7 @@
41
38
 	struct inode *inode;
42
39
 	struct gfs2_holder d_gh;
43
40
 	struct gfs2_inode *ip = NULL;
44
-	int error;
41
+	int error, valid = 0;
45
42
 	int had_lock = 0;
46
43
 
47
44
 	if (flags & LOOKUP_RCU)
..
..
@@ -54,53 +51,30 @@
54
51
 
55
52
 	if (inode) {
56
53
 		if (is_bad_inode(inode))
57
-			goto invalid;
54
+			goto out;
58
55
 		ip = GFS2_I(inode);
59
56
 	}
60
57
 
61
-	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
62
-		goto valid;
58
+	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) {
59
+		valid = 1;
60
+		goto out;
61
+	}
63
62
 
64
63
 	had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL);
65
64
 	if (!had_lock) {
66
65
 		error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
67
66
 		if (error)
68
-			goto fail;
69
-	} 
70
-
71
-	error = gfs2_dir_check(d_inode(parent), &dentry->d_name, ip);
72
-	switch (error) {
73
-	case 0:
74
-		if (!inode)
75
-			goto invalid_gunlock;
76
-		break;
77
-	case -ENOENT:
78
-		if (!inode)
79
-			goto valid_gunlock;
80
-		goto invalid_gunlock;
81
-	default:
82
-		goto fail_gunlock;
67
+			goto out;
83
68
 	}
84
69
 
85
-valid_gunlock:
70
+	error = gfs2_dir_check(d_inode(parent), &dentry->d_name, ip);
71
+	valid = inode ? !error : (error == -ENOENT);
72
+
86
73
 	if (!had_lock)
87
74
 		gfs2_glock_dq_uninit(&d_gh);
88
-valid:
75
+out:
89
76
 	dput(parent);
90
-	return 1;
91
-
92
-invalid_gunlock:
93
-	if (!had_lock)
94
-		gfs2_glock_dq_uninit(&d_gh);
95
-invalid:
96
-	dput(parent);
97
-	return 0;
98
-
99
-fail_gunlock:
100
-	gfs2_glock_dq_uninit(&d_gh);
101
-fail:
102
-	dput(parent);
103
-	return 0;
77
+	return valid;
104
78
 }
105
79
 
106
80
 static int gfs2_dhash(const struct dentry *dentry, struct qstr *str)