Re: [PATCH v2 4/7] fs/binfmt_elf: replace open-coded string copy with get_task_comm

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On Tue, 30 Nov 2021 11:01:27 +0800
Yafang Shao <laoar.shao@xxxxxxxxx> wrote:

> There are three options,
> - option 1
>   comment on all the hard-coded 16 to explain why it is hard-coded
> - option 2
>   replace the hard-coded 16 that can be replaced and comment on the
> others which can't be replaced.
> - option 3
>    replace the hard-coded 16 that can be replaced and specifically
> define TASK_COMM_LEN_16 in other files which can't include
> linux/sched.h.
> 
> Which one do you prefer ?
> 

Option 3. Since TASK_COMM_LEN_16 is, by it's name, already hard coded to
16, it doesn't really matter if you define it in more than one location.

Or we could define it in another header that include/sched.h can include.

The idea of having TASK_COMM_LEN_16 is to easily grep for it, and also know
exactly what it is used for when people see it being used.

-- Steve




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