linux-kernel - Re: [PATCH v7 00/11] extend task comm from 16 to 24

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Date:   Mon, 1 Nov 2021 12:44:59 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Yafang Shao <laoar.shao@...il.com>
Cc:     akpm@...ux-foundation.org, keescook@...omium.org,
        rostedt@...dmis.org, mathieu.desnoyers@...icios.com,
        arnaldo.melo@...il.com, pmladek@...e.com, peterz@...radead.org,
        viro@...iv.linux.org.uk, valentin.schneider@....com,
        qiang.zhang@...driver.com, robdclark@...omium.org,
        christian@...uner.io, dietmar.eggemann@....com, mingo@...hat.com,
        juri.lelli@...hat.com, vincent.guittot@...aro.org,
        davem@...emloft.net, kuba@...nel.org, ast@...nel.org,
        daniel@...earbox.net, andrii@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, john.fastabend@...il.com,
        kpsingh@...nel.org, dennis.dalessandro@...nelisnetworks.com,
        mike.marciniszyn@...nelisnetworks.com, dledford@...hat.com,
        jgg@...pe.ca, linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, oliver.sang@...el.com, lkp@...el.com
Subject: Re: [PATCH v7 00/11] extend task comm from 16 to 24

On Mon, Nov 01, 2021 at 06:04:08AM +0000, Yafang Shao wrote:
> There're many truncated kthreads in the kernel, which may make trouble
> for the user, for example, the user can't get detailed device
> information from the task comm.
> 
> This patchset tries to improve this problem fundamentally by extending
> the task comm size from 16 to 24, which is a very simple way. 

It can't be that simple if we're on v7 and at 11 patches!

It would be helpful if you included links to earlier postings.  I can
only find v5 and v6 in my inbox, so I fear I'm going to re-ask some
questions which were already answered.

Why can't we shorten the names of these kthreads?  You didn't
give any examples, so I can't suggest any possibilities.