[Linuxarm] Re: [PATCH for-rc] RDMA/hns: Use mutex instead of spinlock for ida allocation

On Tue, Jan 19, 2021 at 05:28:33PM +0800, Weihang Li wrote:

From: Yangyang Li liyangyang20@huawei.com

GFP_KERNEL may cause ida_alloc_range() to sleep, but the spinlock covering this function is not allowed to sleep, so the spinlock needs to be changed to mutex.

As there is a certain chance of memory allocation failure, GFP_ATOMIC is not suitable for QP allocation scenarios.

Fixes: 71586dd20010 ("RDMA/hns: Create QP with selected QPN for bank load balance") Signed-off-by: Yangyang Li liyangyang20@huawei.com Signed-off-by: Weihang Li liweihang@huawei.com

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drivers/infiniband/hw/hns/hns_roce_device.h | 2 +- drivers/infiniband/hw/hns/hns_roce_qp.c | 11 ++++++----- 2 files changed, 7 insertions(+), 6 deletions(-)

Applied to for-rc, thanks

Jason