linux-kernel - Re: [PATCH] block: export symbol blk_flush

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Message-ID: <08d3c0a5-7f5d-4054-8bfb-7767aacd47c3@vivo.com>
Date:   Mon, 4 Sep 2023 15:24:10 +0800
From:   Chunhai Guo <guochunhai@...o.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     "axboe@...nel.dk" <axboe@...nel.dk>,
        "chao@...nel.org" <chao@...nel.org>,
        "jaegeuk@...nel.org" <jaegeuk@...nel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] block: export symbol blk_flush_plug



在 2023/9/4 14:15, Christoph Hellwig 写道:
> [????????? hch@...radead.org ????????? https://aka.ms/LearnAboutSenderIdentification?????????????]
> 
> On Sun, Sep 03, 2023 at 10:22:43PM -0600, Chunhai Guo wrote:
>> blk_flush_plug() can be used in a filesystem module, without it may cause
>> a link failure, as shown in the reported test.
> 
> It should not be used by a file system, so please revert the change that
> started using it despite it intentionally not being exported.
> 

Hi Christoph,

Could you please detail why blk_flush_plug() can not be used by a file 
system?

Thanks.