From: Jesper Dangaard Brouer Subject: [PATCH 05/10] nfs: Use rcu_barrier() on module unload. Date: Tue, 23 Jun 2009 17:04:19 +0200 Message-ID: <20090623150419.22490.94087.stgit@localhost> References: <20090623150330.22490.87327.stgit@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Cc: Jesper Dangaard Brouer , "Paul E. McKenney" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dougthompson@xmission.com, bluesmoke-devel@lists.sourceforge.net, axboe@kernel.dk, "Patrick McHardy" , christine.caulfield@googlemail.com, Trond.Myklebust@netapp.com, linux-wireless@vger.kernel.org, johannes@sipsolutions.net, yoshfuji@linux-ipv6.org, shemminger@linux-foundation.org, linux-nfs@vger.kernel.org, bfields@fieldses.org, neilb@suse.de, linux-ext4@vger.kernel.org, tytso@mit.edu, adilger-xsfywfwIY+M@public.gmane.org, netfilter-devel@vger.kernel.org To: "David S. Miller" Return-path: In-Reply-To: <20090623150330.22490.87327.stgit@localhost> Sender: linux-wireless-owner@vger.kernel.org List-ID: The exit path unregister and destroys a lot of stuff, but I have not verified that nfs_free_delegation() cannot start new call_rcu() callbacks. Signed-off-by: Jesper Dangaard Brouer --- fs/nfs/inode.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 64f8719..40bf2b7 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1518,6 +1518,7 @@ static void __exit exit_nfs_fs(void) unregister_nfs_fs(); nfs_fs_proc_exit(); nfsiod_stop(); + rcu_barrier(); /* Wait for completion of call_rcu()'s */ } /* Not quite true; I just maintain it */