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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-30 13:39:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-30 13:39:04 -0700
commitfb64638566588392e4a544760b649fd7f857e33a (patch)
treef31ebdb2f7def1b8001e2ba78ad831d83ebeac9d /Documentation
parent9f8f16c86e4d9e2afcbdcd6045981c4d9129450e (diff)
parent52bd456a66c1abb7dd43628080025703248b1ea2 (diff)
Merge tag 'for-linus-20180830' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe: "Small collection of fixes that should go into this series. This pull contains: - NVMe pull request with three small fixes (via Christoph) - Kill useless NULL check before kmem_cache_destroy (Chengguang Xu) - Xen block driver pull request with persistent grant flushing fixes (Juergen Gross) - Final wbt fixes, wrapping up the changes for this series. These have been heavily tested (me) - cdrom info leak fix (Scott Bauer) - ATA dma quirk for SQ201 (Linus Walleij) - Straight forward bsg refcount_t conversion (John Pittman)" * tag 'for-linus-20180830' of git://git.kernel.dk/linux-block: cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status nvmet: free workqueue object if module init fails nvme-fcloop: Fix dropped LS's to removed target port nvme-pci: add a memory barrier to nvme_dbbuf_update_and_check_event block: bsg: move atomic_t ref_count variable to refcount API block: remove unnecessary condition check ata: ftide010: Add a quirk for SQ201 blk-wbt: remove dead code blk-wbt: improve waking of tasks blk-wbt: abstract out end IO completion handler 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
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-driver-xen-blkback10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-xen-blkback b/Documentation/ABI/testing/sysfs-driver-xen-blkback
index 8bb43b66eb55..4e7babb3ba1f 100644
--- a/Documentation/ABI/testing/sysfs-driver-xen-blkback
+++ b/Documentation/ABI/testing/sysfs-driver-xen-blkback
@@ -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.