vfs: Allocate anon_inode_inode in anon_inode_init() (75c5a52d) · Commits · 戴 / test

fs/anon_inodes.c

+8 −22

Original line number	Diff line number	Diff line
		@@ -41,19 +41,8 @@ static const struct dentry_operations anon_inodefs_dentry_operations = {
		static struct dentry anon_inodefs_mount(struct file_system_type fs_type,
		int flags, const char dev_name, void data)
		{
		struct dentry *root;
		root = mount_pseudo(fs_type, "anon_inode:", NULL,
		return mount_pseudo(fs_type, "anon_inode:", NULL,
		&anon_inodefs_dentry_operations, ANON_INODE_FS_MAGIC);
		if (!IS_ERR(root)) {
		struct super_block *s = root->d_sb;
		anon_inode_inode = alloc_anon_inode(s);
		if (IS_ERR(anon_inode_inode)) {
		dput(root);
		deactivate_locked_super(s);
		root = ERR_CAST(anon_inode_inode);
		}
		}
		return root;
		}

		static struct file_system_type anon_inode_fs_type = {
		@@ -175,18 +164,15 @@ EXPORT_SYMBOL_GPL(anon_inode_getfd);

		static int __init anon_inode_init(void)
		{
		int error;

		anon_inode_mnt = kern_mount(&anon_inode_fs_type);
		if (IS_ERR(anon_inode_mnt)) {
		error = PTR_ERR(anon_inode_mnt);
		goto err_unregister_filesystem;
		}
		return 0;
		if (IS_ERR(anon_inode_mnt))
		panic("anon_inode_init() kernel mount failed (%ld)\n", PTR_ERR(anon_inode_mnt));

		anon_inode_inode = alloc_anon_inode(anon_inode_mnt->mnt_sb);
		if (IS_ERR(anon_inode_inode))
		panic("anon_inode_init() inode allocation failed (%ld)\n", PTR_ERR(anon_inode_inode));

		err_unregister_filesystem:
		unregister_filesystem(&anon_inode_fs_type);
		panic(KERN_ERR "anon_inode_init() failed (%d)\n", error);
		return 0;
		}

		fs_initcall(anon_inode_init);