diff options
| -rw-r--r-- | fs/btrfs/volumes.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index ebc81766fc86..c1d09da40d73 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1232,31 +1232,29 @@ int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder, */ bytenr = btrfs_sb_offset(0); flags |= FMODE_EXCL; - mutex_lock(&uuid_mutex); bdev = blkdev_get_by_path(path, flags, holder); - if (IS_ERR(bdev)) { - ret = PTR_ERR(bdev); - goto error; - } + if (IS_ERR(bdev)) + return PTR_ERR(bdev); if (btrfs_read_disk_super(bdev, bytenr, &page, &disk_super)) { ret = -EINVAL; goto error_bdev_put; } + mutex_lock(&uuid_mutex); device = device_list_add(path, disk_super); if (IS_ERR(device)) ret = PTR_ERR(device); else *fs_devices_ret = device->fs_devices; + mutex_unlock(&uuid_mutex); btrfs_release_disk_super(page); error_bdev_put: blkdev_put(bdev, flags); -error: - mutex_unlock(&uuid_mutex); + return ret; } |