Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <7c86f5fb-93fc-b765-8070-35ad21ab8820@arm.com>
Date:   Thu, 16 Jun 2022 09:04:58 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0)
 Gecko/20100101 Thunderbird/91.10.0
Subject: Re: [PATCH 5.15 000/251] 5.15.47-rc2 review
To:     Jan Kara <jack@suse.cz>,
        Linus Torvalds <torvalds@linux-foundation.org>
Cc:     Thomas Backlund <tmb@tmb.nu>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        stable <stable@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Shuah Khan <shuah@kernel.org>, patches@kernelci.org,
        lkft-triage@lists.linaro.org, Pavel Machek <pavel@denx.de>,
        Jon Hunter <jonathanh@nvidia.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
        Slade Watkins <slade@sladewatkins.com>
References: <bd80cd0d-a364-4ebd-2a89-933f79eaf4c7@tmb.nu>
 <CAHk-=wix7+mGzS-hANyk7DZsZ1NgGMHjPzSQKggEomYrRCrP_Q@mail.gmail.com>
 <CAHk-=wgfFhwMP0=QQY_iZvf0kveR5=VGK919Ayn+ZSUADs9mag@mail.gmail.com>
 <20220615110022.yifrsvzxjsz2wky5@quack3.lan>
 <20220615133845.o2lzfe5s4dzdfvtg@quack3.lan>
From:   Suzuki K Poulose <suzuki.poulose@arm.com>
In-Reply-To: <20220615133845.o2lzfe5s4dzdfvtg@quack3.lan>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 15/06/2022 14:38, Jan Kara wrote:
> On Wed 15-06-22 13:00:22, Jan Kara wrote:
>> On Tue 14-06-22 12:00:22, Linus Torvalds wrote:
>>> On Tue, Jun 14, 2022 at 11:51 AM Linus Torvalds
>>> <torvalds@linux-foundation.org> wrote:
>>>>
>>>> Or just make sure that noop_backing_dev_info is fully initialized
>>>> before it's used.
>>>
>>> I don't see any real reason why that
>>>
>>>      err = bdi_init(&noop_backing_dev_info);
>>>
>>> couldn't just be done very early. Maybe as the first call in
>>> driver_init(), before the whole devtmpfs_init() etc.
>>
>> I've checked the dependencies and cgroups (which are the only non-trivial
>> dependency besides per-CPU infrastructure) are initialized early enough so
>> it should work fine. So let's try that.
> 
> Attached patch boots for me. Guys, who was able to reproduce the failure: Can
> you please confirm this patch fixes your problem?
> 
> 								Honza

Works for me too

Tested-by: Suzuki K Poulose <suzuki.poulose@arm.com>