linux-kernel - Re: [PATCH] f2fs: Fix the accounting of dcc->undiscard

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Message-ID: <ff0373a4-fe79-3de1-f535-06e168f86ffb@huawei.com>
Date:   Thu, 16 Apr 2020 15:27:23 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Sahitya Tummala <stummala@...eaurora.org>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] f2fs: Fix the accounting of dcc->undiscard_blks

On 2020/4/16 14:17, Sahitya Tummala wrote:
> When a discard_cmd needs to be split due to dpolicy->max_requests, then
> for the remaining length it will be either merged into another cmd or a
> new discard_cmd will be created. In this case, there is double
> accounting of dcc->undiscard_blks for the remaining len, due to which
> it shows incorrect value in stats.
> 
> Signed-off-by: Sahitya Tummala <stummala@...eaurora.org>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,