linux-kernel - Re: [PATCH v12 6/7] xfs: Implement ->notify

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Message-ID: <YlcEeZbYOOIYln3s@infradead.org>
Date:   Wed, 13 Apr 2022 10:12:25 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     Dave Chinner <david@...morbit.com>,
        Shiyang Ruan <ruansy.fnst@...itsu.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-xfs <linux-xfs@...r.kernel.org>,
        Linux NVDIMM <nvdimm@...ts.linux.dev>,
        Linux MM <linux-mm@...ck.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Christoph Hellwig <hch@...radead.org>,
        Jane Chu <jane.chu@...cle.com>
Subject: Re: [PATCH v12 6/7] xfs: Implement ->notify_failure() for XFS

On Wed, Apr 13, 2022 at 10:09:40AM -0700, Dan Williams wrote:
> Yes, sounds like we're on the same page. I had mistakenly interpreted
> "Hence these notifications need to be delayed until after the
> filesystem is mounted" as something the producer would need to handle,
> but yes, consumer is free to drop if the notification arrives at an
> inopportune time.

A SB_BORN check might be all that we need.