linux-ext4 - [Bug 201685] ext4 file system corruption

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Message-ID: <bug-201685-13602-0ahI3Sw8af@https.bugzilla.kernel.org/>
Date:   Mon, 03 Dec 2018 16:20:41 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 201685] ext4 file system corruption

https://bugzilla.kernel.org/show_bug.cgi?id=201685

--- Comment #204 from Guenter Roeck (linux@...ck-us.net) ---
Another update:

Still working on a reliable reproducer. I have been able to reproduce the
problem again with v4.19.6 and the following patches reverted.

Revert "ext4: handle layout changes to pinned DAX mappings"
Revert "dax: remove VM_MIXEDMAP for fsdax and device dax"
Revert "ext4: close race between direct IO and ext4_break_layouts()"

I used a modified version of #185, running on each drive on the affected
system, plus a kernel build running in parallel.

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