linux-kernel - Re: [RESEND][RFC PATCH] blkcg: rewind seq

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Message-ID: <CACGdZYJAm4kwXB_76qT6PZmPO66Kt2NFSQ0+KNT=S+Tgu6SmoA@mail.gmail.com>
Date:   Fri, 13 May 2022 11:06:33 -0700
From:   Khazhy Kumykov <khazhy@...gle.com>
To:     Tejun Heo <tj@...nel.org>, Jens Axboe <axboe@...nel.dk>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@....de>
Cc:     linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [RESEND][RFC PATCH] blkcg: rewind seq_file if no stats

On Fri, May 13, 2022 at 10:40 AM Khazhismel Kumykov <khazhy@...gle.com> wrote:
> +void seq_restore(struct seq_file *m, int count)
(Yes, this and elsewhere should be size_t to match m->count)
> +{
> +       if (WARN_ON_ONCE(count > m->count || count > m->size))
> +               return;
> +       m->count = count;

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