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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-05 19:56:44 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-06 10:32:43 -0500
commita1d0b5eebc4fd6e0edb02688b35f17f67f42aea5 (patch)
tree80d13543ee4f1928e0436919a19de40be2a3b12b /fs/nfs/delegation.c
parentfa68a1ba1de349f0d1fcc54171b95236efe24148 (diff)
downloadlinux-a1d0b5eebc4fd6e0edb02688b35f17f67f42aea5.tar.bz2
NFS: Properly handle the case where the delegation is revoked
If we know that the delegation stateid is bad or revoked, we need to remove that delegation as soon as possible, and then mark all the stateids that relied on that delegation for recovery. We cannot use the delegation as part of the recovery process. Also note that NFSv4.1 uses a different error code (NFS4ERR_DELEG_REVOKED) to indicate that the delegation was revoked. Finally, ensure that setlk() and setattr() can both recover safely from a revoked delegation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/nfs/delegation.c')
-rw-r--r--fs/nfs/delegation.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 7f2654069806..ac889af8ccf5 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -466,6 +466,17 @@ static void nfs_delegation_run_state_manager(struct nfs_client *clp)
nfs4_schedule_state_manager(clp);
}
+void nfs_remove_bad_delegation(struct inode *inode)
+{
+ struct nfs_delegation *delegation;
+
+ delegation = nfs_detach_delegation(NFS_I(inode), NFS_SERVER(inode));
+ if (delegation) {
+ nfs_inode_find_state_and_recover(inode, &delegation->stateid);
+ nfs_free_delegation(delegation);
+ }
+}
+
/**
* nfs_expire_all_delegation_types
* @clp: client to process