Commit b570a975 authored Apr 12, 2013 by Trond Myklebust

NFSv4: Fix handling of revoked delegations by setattr



Currently, _nfs4_do_setattr() will use the delegation stateid if no
writeable open file stateid is available.
If the server revokes that delegation stateid, then the call to
nfs4_handle_exception() will fail to handle the error due to the
lack of a struct nfs4_state, and will just convert the error into
an EIO.

This patch just removes the requirement that we must have a
struct nfs4_state in order to invalidate the delegation and
retry.

Reported-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

parent b9536ad5

fs/nfs/nfs4proc.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -304,9 +304,13 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
		case -NFS4ERR_DELEG_REVOKED:
		case -NFS4ERR_ADMIN_REVOKED:
		case -NFS4ERR_BAD_STATEID:
		if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) {
		nfs_remove_bad_delegation(inode);
		exception->retry = 1;
		break;
		}
		if (state == NULL)
		break;
		nfs_remove_bad_delegation(state->inode);
		ret = nfs4_schedule_stateid_recovery(server, state);
		if (ret < 0)
		break;