On Fri, Feb 24, 2017 at 08:56:06AM -0800, Linus Torvalds wrote: > This one looks very questionable. > > Taking the lock for every single inode, even when we can tell that it's > pointless, is horrid. > > Even if you really think you found a race, i think it would be better to > leave the unlocked read around as an optimistic check, and then do a safe > double check read inside the lock (together with the i_state checks) > > Hmm? Yeah, pretty dumb that.
