Index: head/sys/fs/ext2fs/ext2_inode.c
===================================================================
--- head/sys/fs/ext2fs/ext2_inode.c
+++ head/sys/fs/ext2fs/ext2_inode.c
@@ -356,7 +356,7 @@
 		oip->i_ib[i] = oldblks[EXT2_NDADDR + i];
 	}
 	oip->i_size = osize;
-	error = vtruncbuf(ovp, cred, length, (int)fs->e2fs_bsize);
+	error = vtruncbuf(ovp, length, (int)fs->e2fs_bsize);
 	if (error && (allerror == 0))
 		allerror = error;
 	vnode_pager_setsize(ovp, length);
@@ -530,7 +530,7 @@
 	}
 
 	oip->i_size = osize;
-	error = vtruncbuf(ovp, cred, length, (int)fs->e2fs_bsize);
+	error = vtruncbuf(ovp, length, (int)fs->e2fs_bsize);
 	if (error)
 		return (error);
 
Index: head/sys/fs/fuse/fuse_io.c
===================================================================
--- head/sys/fs/fuse/fuse_io.c
+++ head/sys/fs/fuse/fuse_io.c
@@ -389,7 +389,7 @@
 
 		if (uio->uio_offset > fvdat->filesize &&
 		    fuse_data_cache_mode != FUSE_CACHE_UC) {
-			fuse_vnode_setsize(vp, cred, uio->uio_offset);
+			fuse_vnode_setsize(vp, uio->uio_offset);
 			fvdat->flag &= ~FN_SIZECHANGE;
 		}
 	}
@@ -462,7 +462,7 @@
 			if (bp != NULL) {
 				long save;
 
-				err = fuse_vnode_setsize(vp, cred, 
+				err = fuse_vnode_setsize(vp,
 							 uio->uio_offset + n);
 				if (err) {
 					brelse(bp);
@@ -490,7 +490,7 @@
 				lbn, on, n, uio, bcount, false);
 			bp = getblk(vp, lbn, bcount, PCATCH, 0, 0);
 			if (bp && uio->uio_offset + n > fvdat->filesize) {
-				err = fuse_vnode_setsize(vp, cred, 
+				err = fuse_vnode_setsize(vp,
 							 uio->uio_offset + n);
 				if (err) {
 					brelse(bp);
Index: head/sys/fs/fuse/fuse_node.h
===================================================================
--- head/sys/fs/fuse/fuse_node.h
+++ head/sys/fs/fuse/fuse_node.h
@@ -127,6 +127,6 @@
 
 int fuse_vnode_savesize(struct vnode *vp, struct ucred *cred);
 
-int fuse_vnode_setsize(struct vnode *vp, struct ucred *cred, off_t newsize);
+int fuse_vnode_setsize(struct vnode *vp, off_t newsize);
 
 #endif /* _FUSE_NODE_H_ */
Index: head/sys/fs/fuse/fuse_node.c
===================================================================
--- head/sys/fs/fuse/fuse_node.c
+++ head/sys/fs/fuse/fuse_node.c
@@ -408,7 +408,7 @@
 }
 
 int
-fuse_vnode_setsize(struct vnode *vp, struct ucred *cred, off_t newsize)
+fuse_vnode_setsize(struct vnode *vp, off_t newsize)
 {
 	struct fuse_vnode_data *fvdat = VTOFUD(vp);
 	off_t oldsize;
@@ -421,7 +421,7 @@
 	fvdat->flag |= FN_SIZECHANGE;
 
 	if (newsize < oldsize) {
-		err = vtruncbuf(vp, cred, newsize, fuse_iosize(vp));
+		err = vtruncbuf(vp, newsize, fuse_iosize(vp));
 	}
 	vnode_pager_setsize(vp, newsize);
 	return err;
Index: head/sys/fs/fuse/fuse_vnops.c
===================================================================
--- head/sys/fs/fuse/fuse_vnops.c
+++ head/sys/fs/fuse/fuse_vnops.c
@@ -530,7 +530,7 @@
 				      fdi.answ)->attr.size;
 
 		if (fvdat->filesize != new_filesize) {
-			fuse_vnode_setsize(vp, cred, new_filesize);
+			fuse_vnode_setsize(vp, new_filesize);
 			fvdat->flag &= ~FN_SIZECHANGE;
 		}
 	}
@@ -971,7 +971,7 @@
 					    "%s!\n", __func__,
 					    vnode_mount(vp)->mnt_stat.f_mntonname);
 
-				(void)fuse_vnode_setsize(vp, cred, fattr->size);
+				(void)fuse_vnode_setsize(vp, fattr->size);
 				fvdat->flag &= ~FN_SIZECHANGE;
 			}
 			*vpp = vp;
@@ -1654,7 +1654,7 @@
 out:
 	fdisp_destroy(&fdi);
 	if (!err && sizechanged) {
-		fuse_vnode_setsize(vp, cred, newsize);
+		fuse_vnode_setsize(vp, newsize);
 		VTOFUD(vp)->flag &= ~FN_SIZECHANGE;
 	}
 	return err;
Index: head/sys/fs/msdosfs/msdosfs_denode.c
===================================================================
--- head/sys/fs/msdosfs/msdosfs_denode.c
+++ head/sys/fs/msdosfs/msdosfs_denode.c
@@ -429,7 +429,7 @@
 	dep->de_FileSize = length;
 	if (!isadir)
 		dep->de_flag |= DE_UPDATE | DE_MODIFIED;
-	allerror = vtruncbuf(DETOV(dep), cred, length, pmp->pm_bpcluster);
+	allerror = vtruncbuf(DETOV(dep), length, pmp->pm_bpcluster);
 #ifdef MSDOSFS_DEBUG
 	if (allerror)
 		printf("detrunc(): vtruncbuf error %d\n", allerror);
Index: head/sys/fs/nfsclient/nfs.h
===================================================================
--- head/sys/fs/nfsclient/nfs.h
+++ head/sys/fs/nfsclient/nfs.h
@@ -91,8 +91,7 @@
 /*
  * Function prototypes.
  */
-int ncl_meta_setsize(struct vnode *, struct ucred *, struct thread *,
-    u_quad_t);
+int ncl_meta_setsize(struct vnode *, struct thread *, u_quad_t);
 void ncl_doio_directwrite(struct buf *);
 int ncl_bioread(struct vnode *, struct uio *, int, struct ucred *);
 int ncl_biowrite(struct vnode *, struct uio *, int, struct ucred *);
Index: head/sys/fs/nfsclient/nfs_clbio.c
===================================================================
--- head/sys/fs/nfsclient/nfs_clbio.c
+++ head/sys/fs/nfsclient/nfs_clbio.c
@@ -1832,7 +1832,7 @@
  */
 
 int
-ncl_meta_setsize(struct vnode *vp, struct ucred *cred, struct thread *td, u_quad_t nsize)
+ncl_meta_setsize(struct vnode *vp, struct thread *td, u_quad_t nsize)
 {
 	struct nfsnode *np = VTONFS(vp);
 	u_quad_t tsize;
@@ -1854,7 +1854,7 @@
 		 * truncation point.  We may have a B_DELWRI and/or B_CACHE
 		 * buffer that now needs to be truncated.
 		 */
-		error = vtruncbuf(vp, cred, nsize, biosize);
+		error = vtruncbuf(vp, nsize, biosize);
 		lbn = nsize / biosize;
 		bufsize = nsize - (lbn * biosize);
 		bp = nfs_getcacheblk(vp, lbn, bufsize, td);
Index: head/sys/fs/nfsclient/nfs_clvnops.c
===================================================================
--- head/sys/fs/nfsclient/nfs_clvnops.c
+++ head/sys/fs/nfsclient/nfs_clvnops.c
@@ -979,8 +979,7 @@
 			mtx_lock(&np->n_mtx);
 			tsize = np->n_size;
 			mtx_unlock(&np->n_mtx);
-			error = ncl_meta_setsize(vp, ap->a_cred, td,
-			    vap->va_size);
+			error = ncl_meta_setsize(vp, td, vap->va_size);
 			mtx_lock(&np->n_mtx);
  			if (np->n_flag & NMODIFIED) {
 			    tsize = np->n_size;
Index: head/sys/kern/vfs_subr.c
===================================================================
--- head/sys/kern/vfs_subr.c
+++ head/sys/kern/vfs_subr.c
@@ -1863,15 +1863,15 @@
  * sync activity.
  */
 int
-vtruncbuf(struct vnode *vp, struct ucred *cred, off_t length, int blksize)
+vtruncbuf(struct vnode *vp, off_t length, int blksize)
 {
 	struct buf *bp, *nbp;
 	int anyfreed;
 	daddr_t trunclbn;
 	struct bufobj *bo;
 
-	CTR5(KTR_VFS, "%s: vp %p with cred %p and block %d:%ju", __func__,
-	    vp, cred, blksize, (uintmax_t)length);
+	CTR4(KTR_VFS, "%s: vp %p with block %d:%ju", __func__,
+	    vp, blksize, (uintmax_t)length);
 
 	/*
 	 * Round up to the *next* lbn.
Index: head/sys/sys/vnode.h
===================================================================
--- head/sys/sys/vnode.h
+++ head/sys/sys/vnode.h
@@ -658,8 +658,7 @@
 void	_vhold(struct vnode *, bool);
 void	vinactive(struct vnode *, struct thread *);
 int	vinvalbuf(struct vnode *vp, int save, int slpflag, int slptimeo);
-int	vtruncbuf(struct vnode *vp, struct ucred *cred, off_t length,
-	    int blksize);
+int	vtruncbuf(struct vnode *vp, off_t length, int blksize);
 void	vunref(struct vnode *);
 void	vn_printf(struct vnode *vp, const char *fmt, ...) __printflike(2,3);
 int	vrecycle(struct vnode *vp);
Index: head/sys/ufs/ffs/ffs_inode.c
===================================================================
--- head/sys/ufs/ffs/ffs_inode.c
+++ head/sys/ufs/ffs/ffs_inode.c
@@ -509,7 +509,7 @@
 	ip->i_size = osize;
 	DIP_SET(ip, i_size, osize);
 
-	error = vtruncbuf(vp, cred, length, fs->fs_bsize);
+	error = vtruncbuf(vp, length, fs->fs_bsize);
 	if (error && (allerror == 0))
 		allerror = error;