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Merge branch 'stable/for-jens-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-linus

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Pull Xen block driver fixes from Konrad:

"Fix for flushing out persistent pages at a deterministic rate"

* 'stable/for-jens-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/blkback: remove unused pers_gnts_lock from struct xen_blkif_ring
  xen/blkback: move persistent grants flags to bool
  xen/blkfront: reorder tests in xlblk_init()
  xen/blkfront: cleanup stale persistent grants
  xen/blkback: don't keep persistent grants too long
This commit is contained in:
Jens Axboe
2018-08-27 11:27:32 -06:00
parent 38cfb5a45e 6f2f39ad1a
commit 057d3ccf93
4 changed files with 164 additions and 71 deletions
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10
Documentation/ABI/testing/sysfs-driver-xen-blkback
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@@ -15,3 +15,13 @@ Description:
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.