IB/mlx5: Take write semaphore when changing the vma struct

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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: 7c2344c3bb ('IB/mlx5: Implements disassociate_ucontext API')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Maor Gottlieb 2017-03-29 06:03:02 +03:00 • committed by Doug Ledford

parent ca37a664a8

commit ecc7d83be3

1 changed files with 2 additions and 2 deletions

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drivers/infiniband/hw/mlx5/main.c

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