@@ -2351,7 +2351,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
if (seeding_dev) {
sb->s_flags &= ~MS_RDONLY;
ret = btrfs_prepare_sprout(root);
- BUG_ON(ret); /* -ENOMEM */
+ if (ret)
+ goto error_trans;
}
device->fs_devices = root->fs_info->fs_devices;
@@ -2398,26 +2399,20 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
lock_chunks(root);
ret = init_first_rw_device(trans, root, device);
unlock_chunks(root);
- if (ret) {
- btrfs_abort_transaction(trans, root, ret);
- goto error_trans;
- }
+ if (ret)
+ goto error_sysfs;
}
ret = btrfs_add_device(trans, root, device);
- if (ret) {
- btrfs_abort_transaction(trans, root, ret);
- goto error_trans;
- }
+ if (ret)
+ goto error_sysfs;
if (seeding_dev) {
char fsid_buf[BTRFS_UUID_UNPARSED_SIZE];
ret = btrfs_finish_sprout(trans, root);
- if (ret) {
- btrfs_abort_transaction(trans, root, ret);
- goto error_trans;
- }
+ if (ret)
+ goto error_sysfs;
/* Sprouting would change fsid of the mounted root,
* so rename the fsid on the sysfs
@@ -2460,10 +2455,18 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
update_dev_time(device_path);
return ret;
+error_sysfs:
+ if (seeding_dev) {
+ /* undo of btrfs_prepare_sprout is missing*/
+ BUG_ON(1);
+ }
+ btrfs_sysfs_rm_device_link(root->fs_info->fs_devices, device);
error_trans:
+ if (seeding_dev)
+ sb->s_flags |= MS_RDONLY;
+ btrfs_abort_transaction(trans, root, ret);
btrfs_end_transaction(trans, root);
rcu_string_free(device->name);
- btrfs_sysfs_rm_device_link(root->fs_info->fs_devices, device);
kfree(device);
error:
blkdev_put(bdev, FMODE_EXCL);
btrfs_init_new_device() should put the FS back to RDONLY if init fails in the seed_device context. Further it adds the following clean up: - fixes a bug_on to goto label error_trans: - move btrfs_abort_transaction() label error_trans: and - as there is no code to undo the btrfs_prepare_sprout() so temporarily calls a bug_on Signed-off-by: Anand Jain <anand.jain@oracle.com> --- fs/btrfs/volumes.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-)