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| author | Jason Wang <jasowang@redhat.com> | 2018-08-24 16:53:13 +0800 |
|---|---|---|
| committer | Alistair Strachan <astrachan@google.com> | 2019-01-15 17:08:38 -0800 |
| commit | eb2ca3c19653d03815a491cb914e21247f0dc177 (patch) | |
| tree | 56855e9d915297201837ea214fce7a4d9026a7bf /fs/btrfs/tree-checker.c | |
| parent | 732e0b13c5d1cf99e6c19bdeb43a3da750242837 (diff) | |
UPSTREAM: vhost: correctly check the iova range when waking virtqueue
[ Upstream commit 2d66f997f0545c8f7fc5cf0b49af1decb35170e7 ]
We don't wakeup the virtqueue if the first byte of pending iova range
is the last byte of the range we just got updated. This will lead a
virtqueue to wait for IOTLB updating forever. Fixing by correct the
check and wake up the virtqueue in this case.
Fixes: 6b1e6cc7855b ("vhost: new device IOTLB API")
Reported-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Tested-by: Peter Xu <peterx@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit a21a39a9c37b8f629633d22a29cab69bbce38261)
Bug: 121166534
Test: Ran cuttlefish with android-4.4 + VSOCKETS, VMWARE_VMCI_VSOCKETS
Signed-off-by: Alistair Strachan <astrachan@google.com>
Change-Id: I2cd64a1d7e195a508a3385e3afe4ecf22632770f
Diffstat (limited to 'fs/btrfs/tree-checker.c')
0 files changed, 0 insertions, 0 deletions