| What: /sys/block/dm-<num>/bow/free |
| Date: January 2023 |
| KernelVersion: 5.15 |
| Contact: paullawrence@google.com |
| Description: free space |
| Free space on device in bytes. Only valid in state 0 |
| Users: Android vold to determine if there is sufficient space for expected size |
| of checksum |
| |
| What: /sys/block/dm-<num>/bow/state |
| Date: January 2023 |
| KernelVersion: 5.15 |
| Contact: paullawrence@google.com |
| Description: dm-bow state |
| Read-write string containing 0, 1 or 2 |
| 0: Trim mode |
| 1: Checkpoint mode |
| 2: Committed mode |
| See Documentation/device-mapper/dm-bow for details |
