Re: [BUG] 2.6.24-rc2-mm1 - kernel bug on nfs v4

["Torsten Kaiser" <just.for.lkml@googlemail.com>]

On Nov 19, 2007 10:00 AM, Andrew Morton <akpm@linux-foundation.org> wrote:
> On Mon, 19 Nov 2007 08:15:48 +0100 "Torsten Kaiser" <just.for.lkml@googlemail.com> wrote:
> > On Nov 18, 2007 8:18 PM, Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
> > > I had already fixed that one in my own stack. Attached are the 3 patches
> > > that I've got. 1 from SteveD, 2 fixes.
> >
> > Moving the init_waitqueue_head() like patch
> > linux-2.6.24-006-fix_to_fix_sillyrename_bug_on_umount.dif and applying
> > linux-2.6.24-007-fix_nfs_free_unlinkdata.dif lets my testcase work.
> > Also lockdep no longer complains about the non-static key.
>
> Thanks.
>
> To avoid goofups, could you please send the full fix against 2.6.24-rc2-mm1?

Umm... As I applied this changes manually there is a not insignificant
change of goofups on my part...

For the hang problem I think Tronds suggestion with replacing the
patches from -mm with fresh versions would be the best.


Anyway, currently I have the patch from
http://lkml.org/lkml/2007/11/16/74 to fix the can't-create-files-bug.

To fix the hang bug I used Tronds
linux-2.6.24-007-fix_nfs_free_unlinkdata.dif and the first two hunks
from linux-2.6.24-006-fix_to_fix_sillyrename_bug_on_umount.dif.

Torsten

The needed 2 hunks for reference:

--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -594,9 +594,6 @@ static int nfs_init_server(struct nfs_server *server,
 	/* Create a client RPC handle for the NFSv3 ACL management interface */
 	nfs_init_server_aclclient(server);

-	init_waitqueue_head(&server->active_wq);
-	atomic_set(&server->active, 0);
-
 	dprintk("<-- nfs_init_server() = 0 [new %p]\n", clp);
 	return 0;

@@ -736,6 +733,9 @@ static struct nfs_server *nfs_alloc_server(void)
 	INIT_LIST_HEAD(&server->client_link);
 	INIT_LIST_HEAD(&server->master_link);

+	init_waitqueue_head(&server->active_wq);
+	atomic_set(&server->active, 0);
+
 	server->io_stats = nfs_alloc_iostats();
 	if (!server->io_stats) {
 		kfree(server);