kernel/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.