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Diffstat (limited to 'fs/btrfs/sysfs.c')
-rw-r--r--fs/btrfs/sysfs.c32
1 files changed, 29 insertions, 3 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index df39458f1487..78699364f537 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -605,14 +605,37 @@ static void init_feature_attrs(void)
}
}
-static int add_device_membership(struct btrfs_fs_info *fs_info)
+int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info,
+ struct btrfs_device *one_device)
+{
+ struct hd_struct *disk;
+ struct kobject *disk_kobj;
+
+ if (!fs_info->device_dir_kobj)
+ return -EINVAL;
+
+ if (one_device) {
+ disk = one_device->bdev->bd_part;
+ disk_kobj = &part_to_dev(disk)->kobj;
+
+ sysfs_remove_link(fs_info->device_dir_kobj,
+ disk_kobj->name);
+ }
+
+ return 0;
+}
+
+int btrfs_kobj_add_device(struct btrfs_fs_info *fs_info,
+ struct btrfs_device *one_device)
{
int error = 0;
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *dev;
- fs_info->device_dir_kobj = kobject_create_and_add("devices",
+ if (!fs_info->device_dir_kobj)
+ fs_info->device_dir_kobj = kobject_create_and_add("devices",
&fs_info->super_kobj);
+
if (!fs_info->device_dir_kobj)
return -ENOMEM;
@@ -623,6 +646,9 @@ static int add_device_membership(struct btrfs_fs_info *fs_info)
if (!dev->bdev)
continue;
+ if (one_device && one_device != dev)
+ continue;
+
disk = dev->bdev->bd_part;
disk_kobj = &part_to_dev(disk)->kobj;
@@ -666,7 +692,7 @@ int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info)
if (error)
goto failure;
- error = add_device_membership(fs_info);
+ error = btrfs_kobj_add_device(fs_info, NULL);
if (error)
goto failure;