linux-kernel - Re: [PATCH 5.15 000/251] 5.15.47-rc2 review

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Message-ID: <7c86f5fb-93fc-b765-8070-35ad21ab8820@arm.com>
Date:   Thu, 16 Jun 2022 09:04:58 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Jan Kara <jack@...e.cz>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Thomas Backlund <tmb@....nu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shuah Khan <shuah@...nel.org>, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, Pavel Machek <pavel@...x.de>,
        Jon Hunter <jonathanh@...dia.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Slade Watkins <slade@...dewatkins.com>
Subject: Re: [PATCH 5.15 000/251] 5.15.47-rc2 review

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@...ux-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@....com>