fs/debugfs/inode.c

218 	struct debugfs_fsdata *fsd = dentry->d_fsdata;
220 	if ((unsigned long)fsd & DEBUGFS_FSDATA_IS_REAL_FOPS_BIT)
224 	if (fsd && fsd->real_fops) {
225 		WARN_ON(!list_empty(&fsd->cancellations));
226 		mutex_destroy(&fsd->cancellations_mtx);
229 	kfree(fsd);
234 	struct debugfs_fsdata *fsd = path->dentry->d_fsdata;
236 	return fsd->automount(path->dentry, d_inode(path->dentry)->i_private);
633 	struct debugfs_fsdata *fsd;
639 	fsd = kzalloc(sizeof(*fsd), GFP_KERNEL);
640 	if (!fsd) {
645 	fsd->automount = f;
649 		kfree(fsd);
657 		kfree(fsd);
664 	dentry->d_fsdata = fsd;
729 	struct debugfs_fsdata *fsd;
738 	fsd = READ_ONCE(dentry->d_fsdata);
739 	if ((unsigned long)fsd & DEBUGFS_FSDATA_IS_REAL_FOPS_BIT)
743 	if (refcount_dec_and_test(&fsd->active_users))
764 	while (refcount_read(&fsd->active_users)) {
777 		mutex_lock(&fsd->cancellations_mtx);
778 		while ((c = list_first_entry_or_null(&fsd->cancellations,
783 		mutex_unlock(&fsd->cancellations_mtx);
785 		wait_for_completion(&fsd->active_users_drained);