| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | What: /sys/module/xen_blkback/parameters/max_buffer_pages |
| 2 | Date: March 2013 |
| 3 | KernelVersion: 3.11 |
| 4 | Contact: Roger Pau Monné <roger.pau@citrix.com> |
| 5 | Description: |
| 6 | Maximum number of free pages to keep in each block |
| 7 | backend buffer. |
| 8 | |
| 9 | What: /sys/module/xen_blkback/parameters/max_persistent_grants |
| 10 | Date: March 2013 |
| 11 | KernelVersion: 3.11 |
| 12 | Contact: Roger Pau Monné <roger.pau@citrix.com> |
| 13 | Description: |
| 14 | Maximum number of grants to map persistently in |
| 15 | blkback. If the frontend tries to use more than |
| 16 | max_persistent_grants, the LRU kicks in and starts |
| 17 | removing 5% of max_persistent_grants every 100ms. |