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| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-xen-blkback | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-xen-blkback b/Documentation/ABI/testing/sysfs-driver-xen-blkback new file mode 100644 index 000000000..4e7babb3b --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-xen-blkback @@ -0,0 +1,27 @@ +What: /sys/module/xen_blkback/parameters/max_buffer_pages +Date: March 2013 +KernelVersion: 3.11 +Contact: Roger Pau Monné <roger.pau@citrix.com> +Description: + Maximum number of free pages to keep in each block + backend buffer. + +What: /sys/module/xen_blkback/parameters/max_persistent_grants +Date: March 2013 +KernelVersion: 3.11 +Contact: Roger Pau Monné <roger.pau@citrix.com> +Description: + Maximum number of grants to map persistently in + blkback. If the frontend tries to use more than + max_persistent_grants, the LRU kicks in and starts + removing 5% of max_persistent_grants every 100ms. + +What: /sys/module/xen_blkback/parameters/persistent_grant_unused_seconds +Date: August 2018 +KernelVersion: 4.19 +Contact: Roger Pau Monné <roger.pau@citrix.com> +Description: + How long a persistent grant is allowed to remain + allocated without being in use. The time is in + seconds, 0 means indefinitely long. + The default is 60 seconds. |