From: "Denis V. Lunev" <den@openvz.org>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org,
"Denis V. Lunev" <den@openvz.org>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
"J. Bruce Fields" <bfields@fieldses.org>
Subject: [PATCH 1/1] nfs: BUG_ON in nfs_follow_mountpoint
Date: Mon, 11 Aug 2008 12:02:34 +0400 [thread overview]
Message-ID: <1218441754-20883-1-git-send-email-den@openvz.org> (raw)
Unfortunately, BUG_ON(IS_ROOT(dentry)) can happen inside
nfs_follow_mountpoint with NFS running Fedora 8 using a
specific setup.
https://bugzilla.redhat.com/show_bug.cgi?id=458622
So, the situation should be handled on NFS client gracefully.
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Trond Myklebust <Trond.Myklebust@netapp.com>
CC: J. Bruce Fields <bfields@fieldses.org>
---
fs/nfs/namespace.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 66df08d..4f11c13 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -105,7 +105,10 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
dprintk("--> nfs_follow_mountpoint()\n");
- BUG_ON(IS_ROOT(dentry));
+ err = -ESTALE;
+ if (IS_ROOT(dentry))
+ goto out_err;
+
dprintk("%s: enter\n", __func__);
dput(nd->path.dentry);
nd->path.dentry = dget(dentry);
--
1.5.6.4
reply other threads:[~2008-08-11 8:02 UTC|newest]
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