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-rw-r--r--fs/sysfs/mount.c36
1 files changed, 14 insertions, 22 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 00ab9125d398..402cc356203c 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -19,28 +19,18 @@ struct vfsmount *sysfs_mount;
19struct super_block * sysfs_sb = NULL; 19struct super_block * sysfs_sb = NULL;
20struct kmem_cache *sysfs_dir_cachep; 20struct kmem_cache *sysfs_dir_cachep;
21 21
22static void sysfs_clear_inode(struct inode *inode);
23
24static const struct super_operations sysfs_ops = { 22static const struct super_operations sysfs_ops = {
25 .statfs = simple_statfs, 23 .statfs = simple_statfs,
26 .drop_inode = sysfs_delete_inode, 24 .drop_inode = sysfs_delete_inode,
27 .clear_inode = sysfs_clear_inode,
28}; 25};
29 26
30static struct sysfs_dirent sysfs_root = { 27struct sysfs_dirent sysfs_root = {
31 .s_sibling = LIST_HEAD_INIT(sysfs_root.s_sibling), 28 .s_count = ATOMIC_INIT(1),
32 .s_children = LIST_HEAD_INIT(sysfs_root.s_children), 29 .s_flags = SYSFS_ROOT,
33 .s_element = NULL, 30 .s_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
34 .s_type = SYSFS_ROOT,
35 .s_iattr = NULL,
36 .s_ino = 1, 31 .s_ino = 1,
37}; 32};
38 33
39static void sysfs_clear_inode(struct inode *inode)
40{
41 kfree(inode->i_private);
42}
43
44static int sysfs_fill_super(struct super_block *sb, void *data, int silent) 34static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
45{ 35{
46 struct inode *inode; 36 struct inode *inode;
@@ -53,24 +43,26 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
53 sb->s_time_gran = 1; 43 sb->s_time_gran = 1;
54 sysfs_sb = sb; 44 sysfs_sb = sb;
55 45
56 inode = sysfs_new_inode(S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, 46 inode = new_inode(sysfs_sb);
57 &sysfs_root); 47 if (!inode) {
58 if (inode) {
59 inode->i_op = &sysfs_dir_inode_operations;
60 inode->i_fop = &sysfs_dir_operations;
61 /* directory inodes start off with i_nlink == 2 (for "." entry) */
62 inc_nlink(inode);
63 } else {
64 pr_debug("sysfs: could not get root inode\n"); 48 pr_debug("sysfs: could not get root inode\n");
65 return -ENOMEM; 49 return -ENOMEM;
66 } 50 }
67 51
52 sysfs_init_inode(&sysfs_root, inode);
53
54 inode->i_op = &sysfs_dir_inode_operations;
55 inode->i_fop = &sysfs_dir_operations;
56 /* directory inodes start off with i_nlink == 2 (for "." entry) */
57 inc_nlink(inode);
58
68 root = d_alloc_root(inode); 59 root = d_alloc_root(inode);
69 if (!root) { 60 if (!root) {
70 pr_debug("%s: could not get root dentry!\n",__FUNCTION__); 61 pr_debug("%s: could not get root dentry!\n",__FUNCTION__);
71 iput(inode); 62 iput(inode);
72 return -ENOMEM; 63 return -ENOMEM;
73 } 64 }
65 sysfs_root.s_dentry = root;
74 root->d_fsdata = &sysfs_root; 66 root->d_fsdata = &sysfs_root;
75 sb->s_root = root; 67 sb->s_root = root;
76 return 0; 68 return 0;