xref: /openbmc/linux/Documentation/ABI/testing/sysfs-driver-xen-blkback (revision 1d1996509cd3f90551f4460a68aaf3dc940a05e3) 
1*1d199650SKonrad Rzeszutek WilkWhat:           /sys/module/xen_blkback/parameters/max_buffer_pages
2*1d199650SKonrad Rzeszutek WilkDate:           March 2013
3*1d199650SKonrad Rzeszutek WilkKernelVersion:  3.11
4*1d199650SKonrad Rzeszutek WilkContact:        Roger Pau Monné <roger.pau@citrix.com>
5*1d199650SKonrad Rzeszutek WilkDescription:
6*1d199650SKonrad Rzeszutek Wilk                Maximum number of free pages to keep in each block
7*1d199650SKonrad Rzeszutek Wilk                backend buffer.
8*1d199650SKonrad Rzeszutek Wilk
9*1d199650SKonrad Rzeszutek WilkWhat:           /sys/module/xen_blkback/parameters/max_persistent_grants
10*1d199650SKonrad Rzeszutek WilkDate:           March 2013
11*1d199650SKonrad Rzeszutek WilkKernelVersion:  3.11
12*1d199650SKonrad Rzeszutek WilkContact:        Roger Pau Monné <roger.pau@citrix.com>
13*1d199650SKonrad Rzeszutek WilkDescription:
14*1d199650SKonrad Rzeszutek Wilk                Maximum number of grants to map persistently in
15*1d199650SKonrad Rzeszutek Wilk                blkback. If the frontend tries to use more than
16*1d199650SKonrad Rzeszutek Wilk                max_persistent_grants, the LRU kicks in and starts
17*1d199650SKonrad Rzeszutek Wilk                removing 5% of max_persistent_grants every 100ms.
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