On Thu, Jun 28, 2012 at 04:59:50PM +0800, Liu Yuan wrote: > Let's wait for Christoph's comment to see if he has any smarter > alternative. I have taken a glance at the Linux kernel's list.h and > didn't find a helper that check if entry is added or not either. > > If we don't come up with any better method, let's merge it tomorrow. The kernel uses list_emptry for entries. Using list_del_init and checking with list_empty if entries are members of a list is a very common pattern in the kernel. |