diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 4bfbc1982cd..450f30b6edf 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -273,6 +273,7 @@ static mddev_t * mddev_find(dev_t unit) INIT_LIST_HEAD(&new->all_mddevs); init_timer(&new->safemode_timer); atomic_set(&new->active, 1); + atomic_set(&new->openers, 0); spin_lock_init(&new->write_lock); init_waitqueue_head(&new->sb_wait); init_waitqueue_head(&new->recovery_wait); @@ -2695,14 +2696,14 @@ array_state_store(mddev_t *mddev, const char *buf, size_t len) break; case clear: /* stopping an active array */ - if (atomic_read(&mddev->active) > 1) + if (atomic_read(&mddev->openers) > 0) return -EBUSY; err = do_md_stop(mddev, 0, 0); break; case inactive: /* stopping an active array */ if (mddev->pers) { - if (atomic_read(&mddev->active) > 1) + if (atomic_read(&mddev->openers) > 0) return -EBUSY; err = do_md_stop(mddev, 2, 0); } else @@ -3816,7 +3817,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) int err = 0; struct gendisk *disk = mddev->gendisk; - if (atomic_read(&mddev->active) > 1 + is_open) { + if (atomic_read(&mddev->openers) > is_open) { printk("md: %s still in use.\n",mdname(mddev)); return -EBUSY; } @@ -5014,6 +5015,7 @@ static int md_open(struct inode *inode, struct file *file) err = 0; mddev_get(mddev); + atomic_inc(&mddev->openers); mddev_unlock(mddev); check_disk_change(inode->i_bdev); @@ -5026,6 +5028,7 @@ static int md_release(struct inode *inode, struct file * file) mddev_t *mddev = inode->i_bdev->bd_disk->private_data; BUG_ON(!mddev); + atomic_dec(&mddev->openers); mddev_put(mddev); return 0; |