5382 pvn_getpages handles lengths <= PAGESIZE just fine

*** 21,31 ****
  /*
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  /*
!  * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
   */
  
  /*
   *      Copyright 1983,1984,1985,1986,1987,1988,1989 AT&T.
   *      All Rights Reserved
--- 21,31 ----
  /*
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  /*
!  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
   */
  
  /*
   *      Copyright 1983,1984,1985,1986,1987,1988,1989 AT&T.
   *      All Rights Reserved
*** 9785,9807 ****
                  return (EFAULT);                /* beyond EOF */
          }
  
          mutex_exit(&rp->r_statelock);
  
-         if (len <= PAGESIZE) {
-                 error = nfs4_getapage(vp, off, len, protp, pl, plsz,
-                     seg, addr, rw, cr);
-                 NFS4_DEBUG(nfs4_pageio_debug && error,
-                     (CE_NOTE, "getpage error %d; off=%lld, "
-                     "len=%lld", error, off, (u_longlong_t)len));
-         } else {
                  error = pvn_getpages(nfs4_getapage, vp, off, len, protp,
                      pl, plsz, seg, addr, rw, cr);
                  NFS4_DEBUG(nfs4_pageio_debug && error,
!                     (CE_NOTE, "getpages error %d; off=%lld, "
!                     "len=%lld", error, off, (u_longlong_t)len));
!         }
  
          switch (error) {
          case NFS_EOF:
                  nfs4_purge_caches(vp, NFS4_NOPURGE_DNLC, cr, FALSE);
                  goto retry;
--- 9785,9799 ----
                  return (EFAULT);                /* beyond EOF */
          }
  
          mutex_exit(&rp->r_statelock);
  
          error = pvn_getpages(nfs4_getapage, vp, off, len, protp,
              pl, plsz, seg, addr, rw, cr);
          NFS4_DEBUG(nfs4_pageio_debug && error,
!             (CE_NOTE, "getpages error %d; off=%lld, len=%lld",
!             error, off, (u_longlong_t)len));
  
          switch (error) {
          case NFS_EOF:
                  nfs4_purge_caches(vp, NFS4_NOPURGE_DNLC, cr, FALSE);
                  goto retry;
*** 9811,9821 ****
  
          return (error);
  }
  
  /*
!  * Called from pvn_getpages or nfs4_getpage to get a particular page.
   */
  /* ARGSUSED */
  static int
  nfs4_getapage(vnode_t *vp, u_offset_t off, size_t len, uint_t *protp,
      page_t *pl[], size_t plsz, struct seg *seg, caddr_t addr,
--- 9803,9813 ----
  
          return (error);
  }
  
  /*
!  * Called from pvn_getpages to get a particular page.
   */
  /* ARGSUSED */
  static int
  nfs4_getapage(vnode_t *vp, u_offset_t off, size_t len, uint_t *protp,
      page_t *pl[], size_t plsz, struct seg *seg, caddr_t addr,