fellow_logcache: remove useless size argument

the logcache should know the best size

src/fellow_log.c

@@ -1162,12 +1162,12 @@ fellow_logcache_fini(struct fellow_logcache *flc)
 
 static void
 fellow_logcache_init(struct fellow_logcache *flc, struct fellow_fd *ffd,
-    uint8_t id, const struct buddy_off_extent *region, unsigned n)
+    uint8_t id, const struct buddy_off_extent *region)
 {
 	struct fellow_logcache_entry *fle;
 	struct buddy_reqs *reqs;
 	size_t sz;
-	unsigned u;
+	unsigned n, u;
 
 	AN(ffd);
 	AN(flc);
@@ -1175,11 +1175,10 @@ fellow_logcache_init(struct fellow_logcache *flc, struct fellow_fd *ffd,
 	// sane upper limit to not eat up all of the membuddy
 	sz = buddy_size(ffd->membuddy) / 8;
 	sz >>= MIN_FELLOW_BITS;
-	if (n > sz)
 	n = (typeof(n))sz;
 	if (n > BUDDY_REQS_MAX)
 		n = BUDDY_REQS_MAX;
-	if (n < 2)
+	else if (n < 2)
 		n = 2;	// fellow_logcache_(take|steal) assume 2 entries min
 
 	INIT_OBJ(flc, FELLOW_LOGCACHE_MAGIC);
@@ -3515,7 +3514,7 @@ logbuffer_append(struct fellow_fd *ffd,
 	 */
   dsk_init:
 	AN(from->id);
-	fellow_logcache_init(flc, ffd, from->id, from->logreg->region, 255);
+	fellow_logcache_init(flc, ffd, from->id, from->logreg->region);
 	AZ(locked);
   dsk:
 	where = NULL;
@@ -5127,7 +5126,7 @@ fellow_logs_iter(const struct flics *flics, struct flivs *flivs,
 	CHECK_OBJ_NOTNULL(flics, FLICS_MAGIC);
 	CHECK_OBJ_NOTNULL(flivs, FLIVS_MAGIC);
 
-	fellow_logcache_init(flc, flics->ffd, 0, active_logregion, 255);
+	fellow_logcache_init(flc, flics->ffd, 0, active_logregion);
 
 	assert(flics->ffd->phase > FP_INVAL);
 	assert(flics->ffd->phase < FP_LIM);