{
        loff_t new_size = lcp->lc_last_wr + 1;
        struct iattr iattr = { .ia_valid = 0 };
-       struct timespec ts;
        int error;
 
-       ts = timespec64_to_timespec(inode->i_mtime);
        if (lcp->lc_mtime.tv_nsec == UTIME_NOW ||
-           timespec_compare(&lcp->lc_mtime, &ts) < 0)
-               lcp->lc_mtime = timespec64_to_timespec(current_time(inode));
+           timespec64_compare(&lcp->lc_mtime, &inode->i_mtime) < 0)
+               lcp->lc_mtime = current_time(inode);
        iattr.ia_valid |= ATTR_ATIME | ATTR_CTIME | ATTR_MTIME;
-       iattr.ia_atime = iattr.ia_ctime = iattr.ia_mtime = timespec_to_timespec64(lcp->lc_mtime);
+       iattr.ia_atime = iattr.ia_ctime = iattr.ia_mtime = lcp->lc_mtime;
 
        if (new_size > i_size_read(inode)) {
                iattr.ia_valid |= ATTR_SIZE;
 
  * we ignore all 32 bits of 'nseconds'.
  */
 static __be32
-nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv)
+nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec64 *tv)
 {
        DECODE_HEAD;
-       u64 sec;
 
        READ_BUF(12);
-       p = xdr_decode_hyper(p, &sec);
-       tv->tv_sec = sec;
+       p = xdr_decode_hyper(p, &tv->tv_sec);
        tv->tv_nsec = be32_to_cpup(p++);
        if (tv->tv_nsec >= (u32)1000000000)
                return nfserr_inval;
                   struct iattr *iattr, struct nfs4_acl **acl,
                   struct xdr_netobj *label, int *umask)
 {
-       struct timespec ts;
        int expected_len, len = 0;
        u32 dummy32;
        char *buf;
                switch (dummy32) {
                case NFS4_SET_TO_CLIENT_TIME:
                        len += 12;
-                       status = nfsd4_decode_time(argp, &ts);
-                       iattr->ia_atime = timespec_to_timespec64(ts);
+                       status = nfsd4_decode_time(argp, &iattr->ia_atime);
                        if (status)
                                return status;
                        iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
                switch (dummy32) {
                case NFS4_SET_TO_CLIENT_TIME:
                        len += 12;
-                       status = nfsd4_decode_time(argp, &ts);
-                       iattr->ia_mtime = timespec_to_timespec64(ts);
+                       status = nfsd4_decode_time(argp, &iattr->ia_mtime);
                        if (status)
                                return status;
                        iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
 
        u32                     lc_reclaim;     /* request */
        u32                     lc_newoffset;   /* request */
        u64                     lc_last_wr;     /* request */
-       struct timespec         lc_mtime;       /* request */
+       struct timespec64       lc_mtime;       /* request */
        u32                     lc_layout_type; /* request */
        u32                     lc_up_len;      /* layout length */
        void                    *lc_up_layout;  /* decoded by callback */