Instead of de-referencing the device->fs_devices use cur_devices
which points to the same fs_devices.
Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
fs/btrfs/volumes.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index db077c505fe0..29799d39554a 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1987,20 +1987,25 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
const char *device_path,
* (super_copy) should hold the device list mutex.
*/
+ /*
+ * In normal cases the cur_devices == fs_devices. But in case
+ * of deleting a seed device, the cur_devices should point to
+ * its own fs_devices listed under the fs_devices->seed.
+ */
cur_devices = device->fs_devices;
mutex_lock(&fs_devices->device_list_mutex);
list_del_rcu(&device->dev_list);
- device->fs_devices->num_devices--;
- device->fs_devices->total_devices--;
+ cur_devices->num_devices--;
+ cur_devices->total_devices--;
if (test_bit(BTRFS_DEV_STATE_MISSING, &device->dev_state))
- device->fs_devices->missing_devices--;
+ cur_devices->missing_devices--;
btrfs_assign_next_active_device(fs_info, device, NULL);
if (device->bdev) {
- device->fs_devices->open_devices--;
+ cur_devices->open_devices--;
/* remove sysfs entry */
btrfs_sysfs_rm_device_link(fs_devices, device);
}
--
2.7.0
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