!1936 mm: gmem: Save vm_flags to gmf during mmap

Merge Pull Request from: @ci-robot 
 
PR sync from: Wupeng Ma <mawupeng1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/PFJIRUWXUYO236SNVWZIHSPBBK3ST2UK/ 
 
https://gitee.com/openeuler/kernel/issues/I7WLVX 
 
Link:https://gitee.com/openeuler/kernel/pulls/1936

 

Reviewed-by: zhao xiaoqiang <zhaoxiaoqiang11@jd.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Wei Li <liwei391@huawei.com>