On Fri, May 20, 2016 at 11:11:57AM -0400, Josef Bacik wrote: > On Fri, May 20, 2016 at 12:44 AM, <fdmanana@xxxxxxxxxx> wrote: > > So fix this by taking the device_list_mutex in the readahead code. We > > can't use here the lighter approach of using a rcu_read_lock() and > > rcu_read_unlock() pair together with a list_for_each_entry_rcu() call > > because we end up doing calls to sleeping functions (kzalloc()) in the > > respective code path. > > I think it might be time to change this to a rwsem as well as we use > it in a bunch of places that are read only like statfs and readahead. > But this works for now. Sounds good to me. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
