Hi Robert, On Sat, Nov 20, 2010 at 10:09 PM, Robert P. J. Day <rpjday@xxxxxxxxxxxxxx> wrote: ...snip... > that also suggests that a passage on p. 91 of LKD3 is inaccurate, > where it claims that "because the lists are circular, you can > generally pass any element for head." but that can't be right, since > you must *always* keep track of the head node for any list, to avoid > processing it normally. if you simply drop someone into the middle of > a circular, doubly-linked kernel list, there is no way that i can see > to know which node in that list is the head node when you run across > it during iteration. > > does this make sense? I concur. And this is why routines like list_is_last need to be passed in the node to test along with the head of the list. -- Dave Hylands Shuswap, BC, Canada http://www.DaveHylands.com/ -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
