/* Decrement a buffer_head's reference count. If all buffers against a page have zero reference count, are clean and unlocked, and if the page is clean and unlocked then try_to_free_buffers() may strip the buffers from the page in preparation for freeing it (sometimes, rarely, buffers are removed from a page but it ends up not being freed, and buffers may later be reattached).  */
void __brelse(struct buffer_head *buf)
/* Decrement a buffer_head's reference count. If all buffers against a page have zero reference count, are clean and unlocked, and if the page is clean and unlocked then try_to_free_buffers() may strip the buffers from the page in preparation for freeing it (sometimes, rarely, buffers are removed from a page but it ends up not being freed, and buffers may later be reattached).  */
void __brelse(struct buffer_head *buf)
{
	if (atomic_read(&buf->b_count)) {
		put_bh(buf);
		return;
	}
	WARN(1, KERN_ERR "VFS: brelse: Trying to free free buffer\n");
}