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Date:   Tue, 9 Jun 2020 12:20:15 +0200
From:   Borislav Petkov <>
To:     Ritesh Harjani <>
Cc:     Marek Szyprowski <>,
        Ritesh Harjani <>,,,
        Jan Kara <>, Theodore Ts'o <>,
        "Aneesh Kumar K . V" <>,
Subject: Re: [PATCHv5 3/5] ext4: mballoc: Introduce pcpu seqcnt for freeing
 PA to improve ENOSPC handling

On Wed, Jun 03, 2020 at 03:40:16PM +0530, Ritesh Harjani wrote:
> Yes, this is being discussed in the community.
> I have submitted a patch which should help fix this warning msg.
> Feel free to give this a try on your setup.

I just triggered the same thing here too. Looking at your fix and not
even pretending to know what's going on with that percpu sequence
counting, I can't help but wonder why do you wanna do:

	seq = *raw_cpu_ptr(&discard_pa_seq);

instead of simply doing:

	seq = this_cpu_read(discard_pa_seq);



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