hi, 2019年12月4日(水) 2:58 Chuck Silvers <c...@chuq.com>:
> On Mon, Dec 02, 2019 at 07:10:52PM +0000, Andrew Doran wrote: > > Hello, > > > > In light of the recent discussion, and having asked Jaromir his thoughts > on > > the subject, we both think it's time to enable this by default, so it > gets > > wider testing. Is there a good reason not to? > > > > Cheers, > > Andrew > > The current ubc_direct code still has the problem that I pointed out > originally, > which is that it deadlocks if you read() or write() a page of a file into > a mapping of itself. We should not enable this by default until that > problem > is fixed. > i guess it's safe if the vnode is !VV_MAPPED. > > -Chuck >
