Remove the unused credential argument from VOP_FSYNC() and VFS_SYNC().

I'm not sure why a credential was added to these in the first place, it is
not used anywhere and it doesn't make much sense:

	The credentials for syncing a file (ability to write to the
	file) should be checked at the system call level.

	Credentials for syncing one or more filesystems ("none")
	should be checked at the system call level as well.

	If the filesystem implementation needs a particular credential
	to carry out the syncing it would logically have to the
	cached mount credential, or a credential cached along with
	any delayed write data.

Discussed with:	rwatson

1 files changed, 7 insertions, 7 deletions

diff --git a/sys/nfsclient/nfs_vnops.c b/sys/nfsclient/nfs_vnops.c
index f2074dd..36540c2 100644
--- a/sys/nfsclient/nfs_vnops.c
+++ b/sys/nfsclient/nfs_vnops.c
@@ -99,7 +99,7 @@ __FBSDID("$FreeBSD$");
 static vop_read_t	nfsfifo_read;
 static vop_write_t	nfsfifo_write;
 static vop_close_t	nfsfifo_close;
-static int	nfs_flush(struct vnode *, struct ucred *, int, struct thread *,
+static int	nfs_flush(struct vnode *, int, struct thread *,
 		    int);
 static int	nfs_setattrrpc(struct vnode *, struct vattr *, struct ucred *,
 		    struct thread *);
@@ -534,7 +534,7 @@ nfs_close(struct vop_close_args *ap)
 		     * cannot clear it if we don't commit.
 		     */
 		    int cm = nfsv3_commit_on_close ? 1 : 0;
-		    error = nfs_flush(vp, ap->a_cred, MNT_WAIT, ap->a_td, cm);
+		    error = nfs_flush(vp, MNT_WAIT, ap->a_td, cm);
 		    /* np->n_flag &= ~NMODIFIED; */
 		} else {
 		    error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_td, 1);
@@ -1585,10 +1585,10 @@ nfs_rename(struct vop_rename_args *ap)
 	 * that was written back to our cache earlier. Not checking for
 	 * this condition can result in potential (silent) data loss.
 	 */
-	error = VOP_FSYNC(fvp, fcnp->cn_cred, MNT_WAIT, fcnp->cn_thread);
+	error = VOP_FSYNC(fvp, MNT_WAIT, fcnp->cn_thread);
 	VOP_UNLOCK(fvp, 0, fcnp->cn_thread);
 	if (!error && tvp)
-		error = VOP_FSYNC(tvp, tcnp->cn_cred, MNT_WAIT, tcnp->cn_thread);
+		error = VOP_FSYNC(tvp, MNT_WAIT, tcnp->cn_thread);
 	if (error)
 		goto out;
 
@@ -1704,7 +1704,7 @@ nfs_link(struct vop_link_args *ap)
 	 * doesn't get "out of sync" with the server.
 	 * XXX There should be a better way!
 	 */
-	VOP_FSYNC(vp, cnp->cn_cred, MNT_WAIT, cnp->cn_thread);
+	VOP_FSYNC(vp, MNT_WAIT, cnp->cn_thread);
 
 	v3 = NFS_ISV3(vp);
 	nfsstats.rpccnt[NFSPROC_LINK]++;
@@ -2661,7 +2661,7 @@ static int
 nfs_fsync(struct vop_fsync_args *ap)
 {
 
-	return (nfs_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));
+	return (nfs_flush(ap->a_vp, ap->a_waitfor, ap->a_td, 1));
 }
 
 /*
@@ -2670,7 +2670,7 @@ nfs_fsync(struct vop_fsync_args *ap)
  *	associated with the vnode.
  */
 static int
-nfs_flush(struct vnode *vp, struct ucred *cred, int waitfor, struct thread *td,
+nfs_flush(struct vnode *vp, int waitfor, struct thread *td,
     int commit)
 {
 	struct nfsnode *np = VTONFS(vp);