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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-06-04 09:32:41 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-06-04 15:58:43 -0400
commit1d1996509cd3f90551f4460a68aaf3dc940a05e3 (patch)
tree60888476a7661a0c94c537aea0b290c21e29689c /Documentation/ABI/testing/sysfs-driver-xen-blkback
parent2d5dc3ba853344f39a41ae5bdb0a337b2ecaafa6 (diff)
xen-blkback/sysfs: Move the parameters for the persistent grant features
to a testing subdirectory (as this value should not be baked for the life-time) and also in an appropiate file. Also modified the introduction Linux version from 3.10 to 3.11. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-driver-xen-blkback')
-rw-r--r--Documentation/ABI/testing/sysfs-driver-xen-blkback17
1 files changed, 17 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 000000000000..8bb43b66eb55
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-xen-blkback
@@ -0,0 +1,17 @@
+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.