Remove avail_disks arg from 'enough'.

It can easily be calculated from 'avail' and  'raid_disks', and we
will soon have a case where we don't have it easily available to pass
in.

Signed-off-by: NeilBrown <neilb@suse.de>

Assemble.c

@@ -934,7 +934,7 @@ int Assemble(struct supertype *st, char *mddev,
 				}
 				continue;
 			}
-		/* If this devices thinks that 'most_recent' has failed, then
+		/* If this device thinks that 'most_recent' has failed, then
 		 * we must reject this device.
 		 */
 		if (j != most_recent &&
@@ -965,7 +965,7 @@ int Assemble(struct supertype *st, char *mddev,
 	free(devmap);
 	while (force && !enough(content->array.level, content->array.raid_disks,
 				content->array.layout, 1,
-				avail, okcnt)) {
+				avail)) {
 		/* Choose the newest best drive which is
 		 * not up-to-date, update the superblock
 		 * and add it.
@@ -1132,7 +1132,7 @@ int Assemble(struct supertype *st, char *mddev,
 	if (force && !clean &&
 	    !enough(content->array.level, content->array.raid_disks,
 		    content->array.layout, clean,
-		    avail, okcnt)) {
+		    avail)) {
 		change += st->ss->update_super(st, content, "force-array",
 					devices[chosen_drive].devname, verbose,
 					       0, NULL);
@@ -1331,7 +1331,7 @@ int Assemble(struct supertype *st, char *mddev,
 		if (runstop == 1 ||
 		    (runstop <= 0 &&
 		     ( enough(content->array.level, content->array.raid_disks,
-			      content->array.layout, clean, avail, okcnt) &&
+			      content->array.layout, clean, avail) &&
 		       (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok)
 			     ))) {
 			/* This array is good-to-go.
@@ -1437,13 +1437,13 @@ int Assemble(struct supertype *st, char *mddev,
 				mddev, strerror(errno));
 
 			if (!enough(content->array.level, content->array.raid_disks,
-				    content->array.layout, 1, avail, okcnt))
+				    content->array.layout, 1, avail))
 				fprintf(stderr, Name ": Not enough devices to "
 					"start the array.\n");
 			else if (!enough(content->array.level,
 					 content->array.raid_disks,
 					 content->array.layout, clean,
-					 avail, okcnt))
+					 avail))
 				fprintf(stderr, Name ": Not enough devices to "
 					"start the array while not clean "
 					"- consider --force.\n");
@@ -1471,12 +1471,12 @@ int Assemble(struct supertype *st, char *mddev,
 			if (sparecnt)
 				fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
 			if (!enough(content->array.level, content->array.raid_disks,
-				    content->array.layout, 1, avail, okcnt))
+				    content->array.layout, 1, avail))
 				fprintf(stderr, " - not enough to start the array.\n");
 			else if (!enough(content->array.level,
 					 content->array.raid_disks,
 					 content->array.layout, clean,
-					 avail, okcnt))
+					 avail))
 				fprintf(stderr, " - not enough to start the "
 					"array while not clean - consider "
 					"--force.\n");

Detail.c

@@ -367,7 +367,7 @@ int Detail(char *dev, int brief, int export, int test, char *homehost)
 			if (avail_disks == array.raid_disks)
 				st = "";
 			else if (!enough(array.level, array.raid_disks,
-					 array.layout, 1, avail, avail_disks))
+					 array.layout, 1, avail))
 				st = ", FAILED";
 			else
 				st = ", degraded";
@@ -580,7 +580,7 @@ This is pretty boring
 	if (brief) printf("\n");
 	if (test &&
 	    !enough(array.level, array.raid_disks, array.layout,
-		    1, avail, avail_disks))
+		    1, avail))
 		rv = 2;
 
 	free(disks);

Incremental.c

@@ -486,7 +486,7 @@ int Incremental(char *devname, int verbose, int runstop,
 	active_disks = count_active(st, sra, mdfd, &avail, &info);
 	if (enough(info.array.level, info.array.raid_disks,
 		   info.array.layout, info.array.state & 1,
-		   avail, active_disks) == 0) {
+		   avail) == 0) {
 		if (verbose >= 0)
 			fprintf(stderr, Name
 			     ": %s attached to %s, not enough to start (%d).\n",

mdadm.h

@@ -1164,7 +1164,7 @@ extern char *fname_from_uuid(struct supertype *st,
 			     struct mdinfo *info, char *buf, char sep);
 extern unsigned long calc_csum(void *super, int bytes);
 extern int enough(int level, int raid_disks, int layout, int clean,
-		   char *avail, int avail_disks);
+		   char *avail);
 extern int enough_fd(int fd);
 extern int ask(char *mesg);
 extern unsigned long long get_component_size(int fd);

util.c

@@ -311,10 +311,15 @@ int test_partition_from_id(dev_t id)
 	return rv;
 }
 
-int enough(int level, int raid_disks, int layout, int clean,
+int enough(int level, int raid_disks, int layout, int clean, char *avail)
-	   char *avail, int avail_disks)
 {
 	int copies, first;
+	int i;
+	int avail_disks = 0;
+
+	for (i = 0; i < raid_disks; i++)
+		avail_disks += !!avail[i];
+
 	switch (level) {
 	case 10:
 		/* This is the tricky one - we need to check
@@ -389,7 +394,7 @@ int enough_fd(int fd)
 	}
 	/* This is used on an active array, so assume it is clean */
 	rv = enough(array.level, array.raid_disks, array.layout,
-		    1, avail, avail_disks);
+		    1, avail);
 	free(avail);
 	return rv;
 }