linux-kernel - Re: [PATCH] fork: Use helper function mapping_allow_writable() in dup

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Message-ID: <23352bc3a9914e79a0aa29bc63f830bd@huawei.com>
Date:   Mon, 14 Sep 2020 01:38:24 +0000
From:   linmiaohe <linmiaohe@...wei.com>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
CC:     "christian.brauner@...ntu.com" <christian.brauner@...ntu.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "christian@...lner.me" <christian@...lner.me>,
        "surenb@...gle.com" <surenb@...gle.com>,
        "areber@...hat.com" <areber@...hat.com>,
        "shakeelb@...gle.com" <shakeelb@...gle.com>,
        "cyphar@...har.com" <cyphar@...har.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fork: Use helper function mapping_allow_writable() in
 dup_mmap()

Eric W. Biederman <ebiederm@...ssion.com> wrote:
> Miaohe Lin <linmiaohe@...wei.com> writes:
>
>> Use helper function mapping_allow_writable() to atomic_inc 
>> i_mmap_writable.
>
>Why?
>

Because I think it's better to use the wrapper function instead of the open hard code.
Thanks.