kobject: remove struct kobj_type from struct kset

[linux-2.6-omap-h63xx.git] / arch / s390 / hypfs / inode.c

diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index ad4ca75c0f044dd66b7fdbbfc502f5cd4d0a7adb..c022ccc04d4150103db5e9af364317c21dfb18ff 100644 (file)
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -60,17 +60,28 @@ static void hypfs_add_dentry(struct dentry *dentry)
        hypfs_last_dentry = dentry;
 }
 
+static inline int hypfs_positive(struct dentry *dentry)
+{
+       return dentry->d_inode && !d_unhashed(dentry);
+}
+
 static void hypfs_remove(struct dentry *dentry)
 {
        struct dentry *parent;
 
        parent = dentry->d_parent;
-       if (S_ISDIR(dentry->d_inode->i_mode))
-               simple_rmdir(parent->d_inode, dentry);
-       else
-               simple_unlink(parent->d_inode, dentry);
+       if (!parent || !parent->d_inode)
+               return;
+       mutex_lock(&parent->d_inode->i_mutex);
+       if (hypfs_positive(dentry)) {
+               if (S_ISDIR(dentry->d_inode->i_mode))
+                       simple_rmdir(parent->d_inode, dentry);
+               else
+                       simple_unlink(parent->d_inode, dentry);
+       }
        d_delete(dentry);
        dput(dentry);
+       mutex_unlock(&parent->d_inode->i_mutex);
 }
 
 static void hypfs_delete_tree(struct dentry *root)
@@ -315,6 +326,7 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
        }
        hypfs_update_update(sb);
        sb->s_root = root_dentry;
+       printk(KERN_INFO "hypfs: Hypervisor filesystem mounted\n");
        return 0;
 
 err_tree:
@@ -356,13 +368,17 @@ static struct dentry *hypfs_create_file(struct super_block *sb,
        qname.name = name;
        qname.len = strlen(name);
        qname.hash = full_name_hash(name, qname.len);
+       mutex_lock(&parent->d_inode->i_mutex);
        dentry = lookup_one_len(name, parent, strlen(name));
-       if (IS_ERR(dentry))
-               return ERR_PTR(-ENOMEM);
+       if (IS_ERR(dentry)) {
+               dentry = ERR_PTR(-ENOMEM);
+               goto fail;
+       }
        inode = hypfs_make_inode(sb, mode);
        if (!inode) {
                dput(dentry);
-               return ERR_PTR(-ENOMEM);
+               dentry = ERR_PTR(-ENOMEM);
+               goto fail;
        }
        if (mode & S_IFREG) {
                inode->i_fop = &hypfs_file_ops;
@@ -379,6 +395,8 @@ static struct dentry *hypfs_create_file(struct super_block *sb,
        inode->i_private = data;
        d_instantiate(dentry, inode);
        dget(dentry);
+fail:
+       mutex_unlock(&parent->d_inode->i_mutex);
        return dentry;
 }
 
@@ -391,7 +409,6 @@ struct dentry *hypfs_mkdir(struct super_block *sb, struct dentry *parent,
        if (IS_ERR(dentry))
                return dentry;
        hypfs_add_dentry(dentry);
-       parent->d_inode->i_nlink++;
        return dentry;
 }
 
@@ -473,7 +490,7 @@ static struct super_operations hypfs_s_ops = {
        .show_options   = hypfs_show_options,
 };
 
-static decl_subsys(s390, NULL, NULL);
+static decl_subsys(s390, NULL);
 
 static int __init hypfs_init(void)
 {
@@ -489,7 +506,7 @@ static int __init hypfs_init(void)
                        goto fail_diag;
                }
        }
-       kobj_set_kset_s(&s390_subsys, hypervisor_subsys);
+       s390_subsys.kobj.kset = &hypervisor_subsys;
        rc = subsystem_register(&s390_subsys);
        if (rc)
                goto fail_sysfs;