diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e6d0c3b1169a..57f1f6aa19c9 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1820,8 +1820,10 @@ static u32 nfsd4_get_drc_mem(struct nfsd4_channel_attrs *ca, struct nfsd_net *nn
 	 */
 	scale_factor = max_t(unsigned int, 8, nn->nfsd_serv->sv_nrthreads);
 
-	avail = clamp_t(unsigned long, avail, slotsize,
-			total_avail/scale_factor);
+	if (avail > total_avail / scale_factor)
+		avail = total_avail / scale_factor;
+	else if (avail < slotsize)
+		avail = slotsize;
 	num = min_t(int, num, avail / slotsize);
 	num = max_t(int, num, 1);
 	nfsd_drc_mem_used += num * slotsize;