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| author | Maor Gottlieb <maorg@mellanox.com> | 2017-03-29 06:03:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 10:58:42 +0100 |
| commit | b5834cc1690102c46f839ac4cbfb1f44c06ad1da (patch) | |
| tree | 6180b7f841cb9eac17ea7a129e9d976f06be50f4 /tools/perf/scripts/python/netdev-times.py | |
| parent | fd63c2b253338edd6fc594860333b2e4e1a0a910 (diff) | |
IB/mlx4: Take write semaphore when changing the vma struct
[ Upstream commit 22c3653d04bd0c67b75e99d85e0c0bdf83947df5 ]
When the driver disassociate user context, it changes the vma to
anonymous by setting the vm_ops to null and zap the vma ptes.
In order to avoid race in the kernel, we need to take write lock
before we change the vma entries.
Fixes: ae184ddeca5db ('IB/mlx4_ib: Disassociate support')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions