linux-kernel - Re: loop: avoid EAGAIN, if offset or block

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Message-ID: <1574102176-23804-1-git-send-email-andrew.norrie@cgg.com>
Date:   Mon, 18 Nov 2019 11:36:16 -0700
From:   Andrew Norrie <andrew.norrie@....com>
To:     <jaegeuk@...nel.org>
CC:     <axboe@...nel.dk>, <bvanassche@....org>,
        <linux-block@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>,
        Andrew Norrie <andrew.norrie@....com>
Subject: Re: loop: avoid EAGAIN, if offset or block_size are changed

Any chance to get a review on this patch?

We're running Singularity containers in an mpi environment where multiple
concurrent container image loop mounts occur and we hit this issue as reported
to Sylabs by us here:

https://github.com/sylabs/singularity/issues/3860

It is affecting our production.
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