md: linear.c: Fix typo in comment.

[linux-2.6-omap-h63xx.git] / drivers / md / linear.c

diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 6a866d7c8ae5885e3a0f75970106b1e76efca652..61a980da8b517f4db4aed75fee1d09328e2200e4 100644 (file)
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -122,13 +122,13 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
                return NULL;
 
        cnt = 0;
-       conf->array_size = 0;
+       conf->array_sectors = 0;
 
        rdev_for_each(rdev, tmp, mddev) {
                int j = rdev->raid_disk;
                dev_info_t *disk = conf->disks + j;
 
-               if (j < 0 || j > raid_disks || disk->rdev) {
+               if (j < 0 || j >= raid_disks || disk->rdev) {
                        printk("linear: disk numbering problem. Aborting!\n");
                        goto out;
                }
@@ -146,7 +146,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
                        blk_queue_max_sectors(mddev->queue, PAGE_SIZE>>9);
 
                disk->size = rdev->size;
-               conf->array_size += rdev->size;
+               conf->array_sectors += rdev->size * 2;
 
                cnt++;
        }
@@ -155,16 +155,16 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
                goto out;
        }
 
-       min_spacing = conf->array_size;
+       min_spacing = conf->array_sectors / 2;
        sector_div(min_spacing, PAGE_SIZE/sizeof(struct dev_info *));
 
        /* min_spacing is the minimum spacing that will fit the hash
         * table in one PAGE.  This may be much smaller than needed.
         * We find the smallest non-terminal set of consecutive devices
-        * that is larger than min_spacing as use the size of that as
+        * that is larger than min_spacing and use the size of that as
         * the actual spacing
         */
-       conf->hash_spacing = conf->array_size;
+       conf->hash_spacing = conf->array_sectors / 2;
        for (i=0; i < cnt-1 ; i++) {
                sector_t sz = 0;
                int j;
@@ -194,7 +194,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
                unsigned round;
                unsigned long base;
 
-               sz = conf->array_size >> conf->preshift;
+               sz = conf->array_sectors >> (conf->preshift + 1);
                sz += 1; /* force round-up */
                base = conf->hash_spacing >> conf->preshift;
                round = sector_div(sz, base);
@@ -221,7 +221,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
        curr_offset = 0;
        i = 0;
        for (curr_offset = 0;
-            curr_offset < conf->array_size;
+            curr_offset < conf->array_sectors / 2;
             curr_offset += conf->hash_spacing) {
 
                while (i < raid_disks-1 &&
@@ -258,7 +258,7 @@ static int linear_run (mddev_t *mddev)
        if (!conf)
                return 1;
        mddev->private = conf;
-       mddev->array_size = conf->array_size;
+       mddev->array_sectors = conf->array_sectors;
 
        blk_queue_merge_bvec(mddev->queue, linear_mergeable_bvec);
        mddev->queue->unplug_fn = linear_unplug;
@@ -292,8 +292,8 @@ static int linear_add(mddev_t *mddev, mdk_rdev_t *rdev)
        newconf->prev = mddev_to_conf(mddev);
        mddev->private = newconf;
        mddev->raid_disks++;
-       mddev->array_size = newconf->array_size;
-       set_capacity(mddev->gendisk, mddev->array_size << 1);
+       mddev->array_sectors = newconf->array_sectors;
+       set_capacity(mddev->gendisk, mddev->array_sectors);
        return 0;
 }
 
@@ -318,14 +318,18 @@ static int linear_make_request (struct request_queue *q, struct bio *bio)
        mddev_t *mddev = q->queuedata;
        dev_info_t *tmp_dev;
        sector_t block;
+       int cpu;
 
        if (unlikely(bio_barrier(bio))) {
                bio_endio(bio, -EOPNOTSUPP);
                return 0;
        }
 
-       disk_stat_inc(mddev->gendisk, ios[rw]);
-       disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
+       cpu = part_stat_lock();
+       part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]);
+       part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw],
+                     bio_sectors(bio));
+       part_stat_unlock();
 
        tmp_dev = which_dev(mddev, bio->bi_sector);
        block = bio->bi_sector >> 1;
@@ -349,7 +353,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio)
                 * split it.
                 */
                struct bio_pair *bp;
-               bp = bio_split(bio, bio_split_pool,
+               bp = bio_split(bio,
                               ((tmp_dev->offset + tmp_dev->size)<<1) - bio->bi_sector);
                if (linear_make_request(q, &bp->bio1))
                        generic_make_request(&bp->bio1);