On Thu, Feb 17, 2011 at 6:47 PM, Li Zefan <lizf@xxxxxxxxxxxxxx> wrote: > > I think a defect of this is people might call it twice in one function > but don't know it returns the same variable? Hopefully they'd read the comments... But it's not a big issue either way - having the WARN_ON() statements in front of each use works OK too, given that there are only a few of them. Paul -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>