Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md: (52 commits)
  md: Protect access to mddev->disks list using RCU
  md: only count actual openers as access which prevent a 'stop'
  md: linear: Make array_size sector-based and rename it to array_sectors.
  md: Make mddev->array_size sector-based.
  md: Make super_type->rdev_size_change() take sector-based sizes.
  md: Fix check for overlapping devices.
  md: Tidy up rdev_size_store a bit:
  md: Remove some unused macros.
  md: Turn rdev->sb_offset into a sector-based quantity.
  md: Make calc_dev_sboffset() return a sector count.
  md: Replace calc_dev_size() by calc_num_sectors().
  md: Make update_size() take the number of sectors.
  md: Better control of when do_md_stop is allowed to stop the array.
  md: get_disk_info(): Don't convert between signed and unsigned and back.
  md: Simplify restart_array().
  md: alloc_disk_sb(): Return proper error value.
  md: Simplify sb_equal().
  md: Simplify uuid_equal().
  md: sb_equal(): Fix misleading printk.
  md: Fix a typo in the comment to cmd_match().
  ...

1 files changed, 10 insertions, 10 deletions

diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 6a866d7c8ae5..b1eebf88c209 100644
--- 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++;
         }
@@ -155,7 +155,7 @@ 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
@@ -164,7 +164,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
          * that is larger than min_spacing as 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;
 }