{
struct sysfs_dirent * sd;
- sd = kmem_cache_alloc(sysfs_dir_cachep, GFP_KERNEL);
+ sd = kmem_cache_zalloc(sysfs_dir_cachep, GFP_KERNEL);
if (!sd)
return NULL;
- memset(sd, 0, sizeof(*sd));
atomic_set(&sd->s_count, 1);
atomic_set(&sd->s_event, 1);
INIT_LIST_HEAD(&sd->s_children);
return ERR_PTR(err);
}
-struct inode_operations sysfs_dir_inode_operations = {
+const struct inode_operations sysfs_dir_inode_operations = {
.lookup = sysfs_lookup,
.setattr = sysfs_setattr,
};
new_parent_dentry = new_parent ?
new_parent->dentry : sysfs_mount->mnt_sb->s_root;
+ if (old_parent_dentry->d_inode == new_parent_dentry->d_inode)
+ return 0; /* nothing to move */
again:
mutex_lock(&old_parent_dentry->d_inode->i_mutex);
if (!mutex_trylock(&new_parent_dentry->d_inode->i_mutex)) {