bio_end_io_t *orig_bi_end_io;
void *orig_bi_private;
unsigned long start_time;
- struct hd_struct *part;
+ struct block_device *part;
};
static void md_end_io(struct bio *bio)
static int bind_rdev_to_array(struct md_rdev *rdev, struct mddev *mddev)
{
char b[BDEVNAME_SIZE];
- struct kobject *ko;
int err;
/* prevent duplicates */
if ((err = kobject_add(&rdev->kobj, &mddev->kobj, "dev-%s", b)))
goto fail;
- ko = &part_to_dev(rdev->bdev->bd_part)->kobj;
/* failure here is OK */
- err = sysfs_create_link(&rdev->kobj, ko, "block");
+ err = sysfs_create_link(&rdev->kobj, bdev_kobj(rdev->bdev), "block");
rdev->sysfs_state = sysfs_get_dirent_safe(rdev->kobj.sd, "state");
rdev->sysfs_unack_badblocks =
sysfs_get_dirent_safe(rdev->kobj.sd, "unacknowledged_bad_blocks");
if (!err) {
mddev->array_sectors = sectors;
- if (mddev->pers) {
- set_capacity(mddev->gendisk, mddev->array_sectors);
- revalidate_disk_size(mddev->gendisk, true);
- }
+ if (mddev->pers)
+ set_capacity_and_notify(mddev->gendisk,
+ mddev->array_sectors);
}
mddev_unlock(mddev);
return err ?: len;
return error;
}
-static struct kobject *md_probe(dev_t dev, int *part, void *data)
+static void md_probe(dev_t dev)
{
+ if (MAJOR(dev) == MD_MAJOR && MINOR(dev) >= 512)
+ return;
if (create_on_open)
md_alloc(dev, NULL);
- return NULL;
}
static int add_named_array(const char *val, const struct kernel_param *kp)
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
- set_capacity(mddev->gendisk, mddev->array_sectors);
- revalidate_disk_size(mddev->gendisk, true);
+ set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
clear_bit(MD_NOT_READY, &mddev->flags);
mddev->changed = 1;
kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE);
if (rdev->raid_disk >= 0)
sysfs_unlink_rdev(mddev, rdev);
- set_capacity(disk, 0);
+ set_capacity_and_notify(disk, 0);
mutex_unlock(&mddev->open_mutex);
mddev->changed = 1;
- revalidate_disk_size(disk, true);
if (mddev->ro)
mddev->ro = 0;
break;
}
- md_probe(dev, NULL, NULL);
+ md_probe(dev);
mddev = mddev_find(dev);
if (!mddev || !mddev->gendisk) {
if (mddev)
if (mddev_is_clustered(mddev))
md_cluster_ops->update_size(mddev, old_dev_sectors);
else if (mddev->queue) {
- set_capacity(mddev->gendisk, mddev->array_sectors);
- revalidate_disk_size(mddev->gendisk, true);
+ set_capacity_and_notify(mddev->gendisk,
+ mddev->array_sectors);
}
}
return rv;
{
switch (cmd) {
case ADD_NEW_DISK:
- case BLKROSET:
case GET_ARRAY_INFO:
case GET_BITMAP_FILE:
case GET_DISK_INFO:
int err = 0;
void __user *argp = (void __user *)arg;
struct mddev *mddev = NULL;
- int ro;
bool did_set_md_closing = false;
if (!md_ioctl_valid(cmd))
goto unlock;
}
break;
-
- case BLKROSET:
- if (get_user(ro, (int __user *)(arg))) {
- err = -EFAULT;
- goto unlock;
- }
- err = -EINVAL;
-
- /* if the bdev is going readonly the value of mddev->ro
- * does not matter, no writes are coming
- */
- if (ro)
- goto unlock;
-
- /* are we are already prepared for writes? */
- if (mddev->ro != 1)
- goto unlock;
-
- /* transitioning to readauto need only happen for
- * arrays that call md_write_start
- */
- if (mddev->pers) {
- err = restart_array(mddev);
- if (err == 0) {
- mddev->ro = 2;
- set_disk_ro(mddev->gendisk, 0);
- }
- }
- goto unlock;
}
/*
}
#endif /* CONFIG_COMPAT */
+static int md_set_read_only(struct block_device *bdev, bool ro)
+{
+ struct mddev *mddev = bdev->bd_disk->private_data;
+ int err;
+
+ err = mddev_lock(mddev);
+ if (err)
+ return err;
+
+ if (!mddev->raid_disks && !mddev->external) {
+ err = -ENODEV;
+ goto out_unlock;
+ }
+
+ /*
+ * Transitioning to read-auto need only happen for arrays that call
+ * md_write_start and which are not ready for writes yet.
+ */
+ if (!ro && mddev->ro == 1 && mddev->pers) {
+ err = restart_array(mddev);
+ if (err)
+ goto out_unlock;
+ mddev->ro = 2;
+ }
+
+out_unlock:
+ mddev_unlock(mddev);
+ return err;
+}
+
static int md_open(struct block_device *bdev, fmode_t mode)
{
/*
#endif
.getgeo = md_getgeo,
.check_events = md_check_events,
+ .set_read_only = md_set_read_only,
};
static int md_thread(void *arg)
rcu_read_lock();
rdev_for_each_rcu(rdev, mddev) {
struct gendisk *disk = rdev->bdev->bd_disk;
- curr_events = (int)part_stat_read_accum(&disk->part0, sectors) -
+ curr_events = (int)part_stat_read_accum(disk->part0, sectors) -
atomic_read(&disk->sync_io);
/* sync IO will cause sync_io to increase before the disk_stats
* as sync_io is counted when a request starts, and
mddev_lock_nointr(mddev);
md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));
mddev_unlock(mddev);
- if (!mddev_is_clustered(mddev)) {
- set_capacity(mddev->gendisk, mddev->array_sectors);
- revalidate_disk_size(mddev->gendisk, true);
- }
+ if (!mddev_is_clustered(mddev))
+ set_capacity_and_notify(mddev->gendisk,
+ mddev->array_sectors);
}
spin_lock(&mddev->lock);
if (!md_rdev_misc_wq)
goto err_rdev_misc_wq;
- if ((ret = register_blkdev(MD_MAJOR, "md")) < 0)
+ ret = __register_blkdev(MD_MAJOR, "md", md_probe);
+ if (ret < 0)
goto err_md;
- if ((ret = register_blkdev(0, "mdp")) < 0)
+ ret = __register_blkdev(0, "mdp", md_probe);
+ if (ret < 0)
goto err_mdp;
mdp_major = ret;
- blk_register_region(MKDEV(MD_MAJOR, 0), 512, THIS_MODULE,
- md_probe, NULL, NULL);
- blk_register_region(MKDEV(mdp_major, 0), 1UL<<MINORBITS, THIS_MODULE,
- md_probe, NULL, NULL);
-
register_reboot_notifier(&md_notifier);
raid_table_header = register_sysctl_table(raid_root_table);
struct list_head *tmp;
int delay = 1;
- blk_unregister_region(MKDEV(MD_MAJOR,0), 512);
- blk_unregister_region(MKDEV(mdp_major,0), 1U << MINORBITS);
-
unregister_blkdev(MD_MAJOR,"md");
unregister_blkdev(mdp_major, "mdp");
unregister_reboot_notifier(&md_notifier);
projects / linux-2.6-microblaze.git / blobdiff