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    Subject[PATCH net-next 05/11] net: hns3: change GFP flag during lock period
    Date
    From: Yufeng Mo <moyufeng@huawei.com>

    When allocating memory, the GFP_KERNEL cannot be used during the
    spin_lock period. This is because it may cause scheduling when holding
    spin_lock. This patch changes GFP flag to GFP_ATOMIC in this case.

    Fixes: dd74f815dd41 ("net: hns3: Add support for rule add/delete for flow director")
    Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
    Signed-off-by: lipeng 00277521 <lipeng321@huawei.com>
    Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
    ---
    drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
    index a59d13f..f345095 100644
    --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
    +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
    @@ -5799,7 +5799,7 @@ static int hclge_add_fd_entry_by_arfs(struct hnae3_handle *handle, u16 queue_id,
    return -ENOSPC;
    }

    - rule = kzalloc(sizeof(*rule), GFP_KERNEL);
    + rule = kzalloc(sizeof(*rule), GFP_ATOMIC);
    if (!rule) {
    spin_unlock_bh(&hdev->fd_rule_lock);

    --
    2.7.4
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