Merge tag 'rproc-v4.20' of git://github.com/andersson/remoteproc
[sfrench/cifs-2.6.git] / Documentation / ABI / testing / sysfs-driver-xen-blkback
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.
18
19 What:           /sys/module/xen_blkback/parameters/persistent_grant_unused_seconds
20 Date:           August 2018
21 KernelVersion:  4.19
22 Contact:        Roger Pau Monné <roger.pau@citrix.com>
23 Description:
24                 How long a persistent grant is allowed to remain
25                 allocated without being in use. The time is in
26                 seconds, 0 means indefinitely long.
27                 The default is 60 seconds.