block: move capacity from disk to part0

Move disk->capacity to part0->nr_sects and convert all users who
directly accessed the field to use {get|set}_capacity().  This is done
early to allow the __dev field to be moved.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

5 files changed, 7 insertions, 8 deletions

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 3edb6cb7d68f..aa69556c3485 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -276,7 +276,7 @@ aoeblk_gdalloc(void *vp)
         gd->first_minor = d->sysminor * AOE_PARTITIONS;
         gd->fops = &aoe_bdops;
         gd->private_data = d;
-        gd->capacity = d->ssize;
+        set_capacity(gd, d->ssize);
         snprintf(gd->disk_name, sizeof gd->disk_name, "etherd/e%ld.%d",
                 d->aoemajor, d->aoeminor);
 
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 17eed8c025d0..934800f979c9 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -645,7 +645,7 @@ aoecmd_sleepwork(struct work_struct *work)
                 unsigned long flags;
                 u64 ssize;
 
-                ssize = d->gd->capacity;
+                ssize = get_capacity(d->gd);
                 bd = bdget_disk(d->gd, 0);
 
                 if (bd) {
@@ -707,7 +707,7 @@ ataid_complete(struct aoedev *d, struct aoetgt *t, unsigned char *id)
         if (d->flags & (DEVFL_GDALLOC|DEVFL_NEWSIZE))
                 return;
         if (d->gd != NULL) {
-                d->gd->capacity = ssize;
+                set_capacity(d->gd, ssize);
                 d->flags |= DEVFL_NEWSIZE;
         } else
                 d->flags |= DEVFL_GDALLOC;
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index a1d813ab0d6b..6a8038d115b5 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -91,7 +91,7 @@ aoedev_downdev(struct aoedev *d)
         }
 
         if (d->gd)
-                d->gd->capacity = 0;
+                set_capacity(d->gd, 0);
 
         d->flags &= ~DEVFL_UP;
 }
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index b60699c271ac..902b95f1f9d5 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -586,7 +586,7 @@ void del_gendisk(struct gendisk *disk)
         disk_part_iter_exit(&piter);
 
         invalidate_partition(disk, 0);
-        disk->capacity = 0;
+        set_capacity(disk, 0);
         disk->flags &= ~GENHD_FL_UP;
         unlink_gendisk(disk);
         disk_stat_set_all(disk, 0);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 9e866a2aee50..1cf828148ec6 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -138,7 +138,6 @@ struct gendisk {
         struct block_device_operations *fops;
         struct request_queue *queue;
         void *private_data;
-        sector_t capacity;
 
         int flags;
         struct device *driverfs_dev;  // FIXME: remove
@@ -411,11 +410,11 @@ static inline sector_t get_start_sect(struct block_device *bdev)
 }
 static inline sector_t get_capacity(struct gendisk *disk)
 {
-        return disk->capacity;
+        return disk->part0.nr_sects;
 }
 static inline void set_capacity(struct gendisk *disk, sector_t size)
 {
-        disk->capacity = size;
+        disk->part0.nr_sects = size;
 }
 
 #ifdef CONFIG_SOLARIS_X86_PARTITION