Re: [PATCH v6 10/12] mmap locking API: rename mmap_sem to mmap_lock

[youling 257]

2020-06-04 13:57 GMT+08:00, Michel Lespinasse <walken@xxxxxxxxxx>:
> On Wed, Jun 3, 2020 at 9:35 PM youling 257 <youling257@xxxxxxxxx> wrote:
>> I have build error about kernel/sys.c,
>>
>> kernel/sys.c: In function âprctl_set_vmaâ:
>> kernel/sys.c:2392:18: error:
>> âstruct mm_structâ has no member named âmmap_semâ; did you mean
>> âmmap_baseâ?
>>   2392 |  down_write(&mm->mmap_sem);
>>        |                  ^~~~~~~~
>>        |                  mmap_base
>> kernel/sys.c:2402:16: error:
>> âstruct mm_structâ has no member named âmmap_semâ; did you mean
>> âmmap_baseâ?
>>   2402 |  up_write(&mm->mmap_sem);
>>        |                ^~~~~~~~
>>        |                mmap_base
>>
>> why not rename kernel/sys.c mmap_sem to mmap_lock?
>
> The proper fix would be to use the mmap locking apis defined in
> include/linux/mmap_lock.h instead.
>
> However I would like more information about your report. Did you apply
> the series yourself ? If so, what base tree did you apply it onto ? If
> not, what tree did you use that already included the series ?

I build linux next-20200603 tree have the kernel/sys.c error.

> Thanks,
>
> --
> Michel "Walken" Lespinasse
> A program is never fully debugged until the last user dies.
>