md: remove mddev_to_conf "helper" macro

Having a macro just to cast a void* isn't really helpful.
I would must rather see that we are simply de-referencing ->private,
than have to know what the macro does.

So open code the macro everywhere and remove the pointless cast.

Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index e23758b..5ea5bca 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -182,7 +182,7 @@
 
 static void free_r1bio(r1bio_t *r1_bio)
 {
-	conf_t *conf = mddev_to_conf(r1_bio->mddev);
+	conf_t *conf = r1_bio->mddev->private;
 
 	/*
 	 * Wake up any possible resync thread that waits for the device
@@ -196,7 +196,7 @@
 
 static void put_buf(r1bio_t *r1_bio)
 {
-	conf_t *conf = mddev_to_conf(r1_bio->mddev);
+	conf_t *conf = r1_bio->mddev->private;
 	int i;
 
 	for (i=0; i<conf->raid_disks; i++) {
@@ -214,7 +214,7 @@
 {
 	unsigned long flags;
 	mddev_t *mddev = r1_bio->mddev;
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 
 	spin_lock_irqsave(&conf->device_lock, flags);
 	list_add(&r1_bio->retry_list, &conf->retry_list);
@@ -253,7 +253,7 @@
  */
 static inline void update_head_pos(int disk, r1bio_t *r1_bio)
 {
-	conf_t *conf = mddev_to_conf(r1_bio->mddev);
+	conf_t *conf = r1_bio->mddev->private;
 
 	conf->mirrors[disk].head_position =
 		r1_bio->sector + (r1_bio->sectors);
@@ -264,7 +264,7 @@
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
 	int mirror;
-	conf_t *conf = mddev_to_conf(r1_bio->mddev);
+	conf_t *conf = r1_bio->mddev->private;
 
 	mirror = r1_bio->read_disk;
 	/*
@@ -309,7 +309,7 @@
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
 	int mirror, behind = test_bit(R1BIO_BehindIO, &r1_bio->state);
-	conf_t *conf = mddev_to_conf(r1_bio->mddev);
+	conf_t *conf = r1_bio->mddev->private;
 	struct bio *to_put = NULL;
 
 
@@ -541,7 +541,7 @@
 
 static void unplug_slaves(mddev_t *mddev)
 {
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	int i;
 
 	rcu_read_lock();
@@ -573,7 +573,7 @@
 static int raid1_congested(void *data, int bits)
 {
 	mddev_t *mddev = data;
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	int i, ret = 0;
 
 	rcu_read_lock();
@@ -772,7 +772,7 @@
 static int make_request(struct request_queue *q, struct bio * bio)
 {
 	mddev_t *mddev = q->queuedata;
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	mirror_info_t *mirror;
 	r1bio_t *r1_bio;
 	struct bio *read_bio;
@@ -991,7 +991,7 @@
 
 static void status(struct seq_file *seq, mddev_t *mddev)
 {
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	int i;
 
 	seq_printf(seq, " [%d/%d] [", conf->raid_disks,
@@ -1010,7 +1010,7 @@
 static void error(mddev_t *mddev, mdk_rdev_t *rdev)
 {
 	char b[BDEVNAME_SIZE];
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 
 	/*
 	 * If it is not operational, then we have already marked it as dead
@@ -1214,7 +1214,7 @@
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
 	mddev_t *mddev = r1_bio->mddev;
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	int i;
 	int mirror=0;
 
@@ -1248,7 +1248,7 @@
 
 static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
 {
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	int i;
 	int disks = conf->raid_disks;
 	struct bio *bio, *wbio;
@@ -1562,7 +1562,7 @@
 	r1bio_t *r1_bio;
 	struct bio *bio;
 	unsigned long flags;
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	struct list_head *head = &conf->retry_list;
 	int unplug=0;
 	mdk_rdev_t *rdev;
@@ -1585,7 +1585,7 @@
 		spin_unlock_irqrestore(&conf->device_lock, flags);
 
 		mddev = r1_bio->mddev;
-		conf = mddev_to_conf(mddev);
+		conf = mddev->private;
 		if (test_bit(R1BIO_IsSync, &r1_bio->state)) {
 			sync_request_write(mddev, r1_bio);
 			unplug = 1;
@@ -1706,7 +1706,7 @@
 
 static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, int go_faster)
 {
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	r1bio_t *r1_bio;
 	struct bio *bio;
 	sector_t max_sector, nr_sectors;
@@ -2087,7 +2087,7 @@
 
 static int stop(mddev_t *mddev)
 {
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	struct bitmap *bitmap = mddev->bitmap;
 	int behind_wait = 0;
 
@@ -2155,7 +2155,7 @@
 	mempool_t *newpool, *oldpool;
 	struct pool_info *newpoolinfo;
 	mirror_info_t *newmirrors;
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 	int cnt, raid_disks;
 	unsigned long flags;
 	int d, d2, err;
@@ -2252,7 +2252,7 @@
 
 static void raid1_quiesce(mddev_t *mddev, int state)
 {
-	conf_t *conf = mddev_to_conf(mddev);
+	conf_t *conf = mddev->private;
 
 	switch(state) {
 	case 1: