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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-03-15 16:44:28 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-03-25 12:04:11 -0400
commit49f9a0fafd844c32f2abada047c0b9a5ba0d6255 (patch)
tree6d9e04bc2b73c16dfefa58362cfa3d5e200cddb2 /fs/nfs/dir.c
parentd9fc6619ca98943d56d2931ce9e4caa4039fd0f1 (diff)
downloadop-kernel-dev-49f9a0fafd844c32f2abada047c0b9a5ba0d6255.zip
op-kernel-dev-49f9a0fafd844c32f2abada047c0b9a5ba0d6255.tar.gz
NFSv4.1: Enable open-by-filehandle
Sometimes, we actually _want_ to do open-by-filehandle, for instance when recovering opens after a network partition, or when called from nfs4_file_open. Enable that functionality using a new capability NFS_CAP_ATOMIC_OPEN_V1, and which is only enabled for NFSv4.1 servers that support it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index f23f455..e093e73 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1486,6 +1486,8 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, unsigned int flags)
goto no_open;
if (d_mountpoint(dentry))
goto no_open;
+ if (NFS_SB(dentry->d_sb)->caps & NFS_CAP_ATOMIC_OPEN_V1)
+ goto no_open;
inode = dentry->d_inode;
parent = dget_parent(dentry);
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