diff options
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index dd318ff280b..cc04dc1445d 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -398,7 +398,6 @@ static noinline int device_list_add(const char *path, device->work.func = pending_bios_fn; memcpy(device->uuid, disk_super->dev_item.uuid, BTRFS_UUID_SIZE); - device->barriers = 1; spin_lock_init(&device->io_lock); device->name = kstrdup(path, GFP_NOFS); if (!device->name) { @@ -462,7 +461,6 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig) device->devid = orig_dev->devid; device->work.func = pending_bios_fn; memcpy(device->uuid, orig_dev->uuid, sizeof(device->uuid)); - device->barriers = 1; spin_lock_init(&device->io_lock); INIT_LIST_HEAD(&device->dev_list); INIT_LIST_HEAD(&device->dev_alloc_list); @@ -1489,7 +1487,6 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) trans = btrfs_start_transaction(root, 0); lock_chunks(root); - device->barriers = 1; device->writeable = 1; device->work.func = pending_bios_fn; generate_random_uuid(device->uuid); @@ -1901,7 +1898,6 @@ int btrfs_balance(struct btrfs_root *dev_root) u64 size_to_free; struct btrfs_path *path; struct btrfs_key key; - struct btrfs_chunk *chunk; struct btrfs_root *chunk_root = dev_root->fs_info->chunk_root; struct btrfs_trans_handle *trans; struct btrfs_key found_key; @@ -1965,9 +1961,6 @@ int btrfs_balance(struct btrfs_root *dev_root) if (found_key.objectid != key.objectid) break; - chunk = btrfs_item_ptr(path->nodes[0], - path->slots[0], - struct btrfs_chunk); /* chunk zero is special */ if (found_key.offset == 0) break; @@ -3034,8 +3027,7 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, } bio->bi_sector = multi->stripes[dev_nr].physical >> 9; dev = multi->stripes[dev_nr].dev; - BUG_ON(rw == WRITE && !dev->writeable); - if (dev && dev->bdev) { + if (dev && dev->bdev && (rw != WRITE || dev->writeable)) { bio->bi_bdev = dev->bdev; if (async_submit) schedule_bio(root, dev, rw, bio); @@ -3084,7 +3076,6 @@ static struct btrfs_device *add_missing_dev(struct btrfs_root *root, return NULL; list_add(&device->dev_list, &fs_devices->devices); - device->barriers = 1; device->dev_root = root->fs_info->dev_root; device->devid = devid; device->work.func = pending_bios_fn; |