md: pass mddev to make_request functions rather than request_queue

We used to pass the personality make_request function direct
to the block layer so the first argument had to be a queue.
But now we have the intermediary md_make_request so it makes
at lot more sense to pass a struct mddev_s.
It makes it possible to have an mddev without its own queue too.

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

9 files changed, 18 insertions, 26 deletions

diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c
index 608a8d3736e2..bd4348f6be0b 100644
--- a/drivers/md/faulty.c
+++ b/drivers/md/faulty.c
@@ -168,9 +168,8 @@ static void add_sector(conf_t *conf, sector_t start, int mode)
                 conf->nfaults = n+1;
 }
 
-static int make_request(struct request_queue *q, struct bio *bio)
+static int make_request(mddev_t *mddev, struct bio *bio)
 {
-        mddev_t *mddev = q->queuedata;
         conf_t *conf = mddev->private;
         int failit = 0;
 
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 3048c1704f40..3204a2263f21 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -286,9 +286,8 @@ static int linear_stop (mddev_t *mddev)
         return 0;
 }
 
-static int linear_make_request (struct request_queue *q, struct bio *bio)
+static int linear_make_request (mddev_t *mddev, struct bio *bio)
 {
-        mddev_t *mddev = q->queuedata;
         dev_info_t *tmp_dev;
         sector_t start_sector;
 
@@ -328,9 +327,9 @@ static int linear_make_request (struct request_queue *q, struct bio *bio)
 
                 bp = bio_split(bio, end_sector - bio->bi_sector);
 
-                if (linear_make_request(q, &bp->bio1))
+                if (linear_make_request(mddev, &bp->bio1))
                         generic_make_request(&bp->bio1);
-                if (linear_make_request(q, &bp->bio2))
+                if (linear_make_request(mddev, &bp->bio2))
                         generic_make_request(&bp->bio2);
                 bio_pair_release(bp);
                 return 0;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index f48ba419cd7b..2e05b0c2515d 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -240,7 +240,7 @@ static int md_make_request(struct request_queue *q, struct bio *bio)
         atomic_inc(&mddev->active_io);
         rcu_read_unlock();
 
-        rv = mddev->pers->make_request(q, bio);
+        rv = mddev->pers->make_request(mddev, bio);
 
         cpu = part_stat_lock();
         part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]);
@@ -354,7 +354,7 @@ static void md_submit_barrier(struct work_struct *ws)
                 bio_endio(bio, 0);
         else {
                 bio->bi_rw &= ~(1<<BIO_RW_BARRIER);
-                if (mddev->pers->make_request(mddev->queue, bio))
+                if (mddev->pers->make_request(mddev, bio))
                         generic_make_request(bio);
                 mddev->barrier = POST_REQUEST_BARRIER;
                 submit_barriers(mddev);
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 3225e25f3c2a..a536f5458097 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -330,7 +330,7 @@ struct mdk_personality
         int level;
         struct list_head list;
         struct module *owner;
-        int (*make_request)(struct request_queue *q, struct bio *bio);
+        int (*make_request)(mddev_t *mddev, struct bio *bio);
         int (*run)(mddev_t *mddev);
         int (*stop)(mddev_t *mddev);
         void (*status)(struct seq_file *seq, mddev_t *mddev);
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 5b4e2918663a..50bf8e6f8c7b 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -135,9 +135,8 @@ static void multipath_unplug(struct request_queue *q)
 }
 
 
-static int multipath_make_request (struct request_queue *q, struct bio * bio)
+static int multipath_make_request(mddev_t *mddev, struct bio * bio)
 {
-        mddev_t *mddev = q->queuedata;
         multipath_conf_t *conf = mddev->private;
         struct multipath_bh * mp_bh;
         struct multipath_info *multipath;
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index d535f9be39f4..9f9c6b76ca7c 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -465,9 +465,8 @@ static inline int is_io_in_chunk_boundary(mddev_t *mddev,
         }
 }
 
-static int raid0_make_request(struct request_queue *q, struct bio *bio)
+static int raid0_make_request(mddev_t *mddev, struct bio *bio)
 {
-        mddev_t *mddev = q->queuedata;
         unsigned int chunk_sects;
         sector_t sector_offset;
         struct strip_zone *zone;
@@ -495,9 +494,9 @@ static int raid0_make_request(struct request_queue *q, struct bio *bio)
                 else
                         bp = bio_split(bio, chunk_sects -
                                        sector_div(sector, chunk_sects));
-                if (raid0_make_request(q, &bp->bio1))
+                if (raid0_make_request(mddev, &bp->bio1))
                         generic_make_request(&bp->bio1);
-                if (raid0_make_request(q, &bp->bio2))
+                if (raid0_make_request(mddev, &bp->bio2))
                         generic_make_request(&bp->bio2);
 
                 bio_pair_release(bp);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index eebce166dafe..5ff75c4d3af6 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -773,9 +773,8 @@ do_sync_io:
         return NULL;
 }
 
-static int make_request(struct request_queue *q, struct bio * bio)
+static int make_request(mddev_t *mddev, struct bio * bio)
 {
-        mddev_t *mddev = q->queuedata;
         conf_t *conf = mddev->private;
         mirror_info_t *mirror;
         r1bio_t *r1_bio;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ca313d646fd1..a1d727610a49 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -788,9 +788,8 @@ static void unfreeze_array(conf_t *conf)
         spin_unlock_irq(&conf->resync_lock);
 }
 
-static int make_request(struct request_queue *q, struct bio * bio)
+static int make_request(mddev_t *mddev, struct bio * bio)
 {
-        mddev_t *mddev = q->queuedata;
         conf_t *conf = mddev->private;
         mirror_info_t *mirror;
         r10bio_t *r10_bio;
@@ -824,9 +823,9 @@ static int make_request(struct request_queue *q, struct bio * bio)
                  */
                 bp = bio_split(bio,
                                chunk_sects - (bio->bi_sector & (chunk_sects - 1)) );
-                if (make_request(q, &bp->bio1))
+                if (make_request(mddev, &bp->bio1))
                         generic_make_request(&bp->bio1);
-                if (make_request(q, &bp->bio2))
+                if (make_request(mddev, &bp->bio2))
                         generic_make_request(&bp->bio2);
 
                 bio_pair_release(bp);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 231afda1697f..2882a26646fd 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3753,9 +3753,8 @@ static int bio_fits_rdev(struct bio *bi)
 }
 
 
-static int chunk_aligned_read(struct request_queue *q, struct bio * raid_bio)
+static int chunk_aligned_read(mddev_t *mddev, struct bio * raid_bio)
 {
-        mddev_t *mddev = q->queuedata;
         raid5_conf_t *conf = mddev->private;
         int dd_idx;
         struct bio* align_bi;
@@ -3870,9 +3869,8 @@ static struct stripe_head *__get_priority_stripe(raid5_conf_t *conf)
         return sh;
 }
 
-static int make_request(struct request_queue *q, struct bio * bi)
+static int make_request(mddev_t *mddev, struct bio * bi)
 {
-        mddev_t *mddev = q->queuedata;
         raid5_conf_t *conf = mddev->private;
         int dd_idx;
         sector_t new_sector;
@@ -3896,7 +3894,7 @@ static int make_request(struct request_queue *q, struct bio * bi)
 
         if (rw == READ &&
              mddev->reshape_position == MaxSector &&
-             chunk_aligned_read(q,bi))
+             chunk_aligned_read(mddev,bi))
                 return 0;
 
         logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1);