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

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Date:   Fri, 30 Nov 2018 18:05:45 +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 #94 from Jens Axboe (axboe@...nel.dk) ---
In terms of ext4 changes, it'd be interesting to just revert this one:

commit ac22b46a0b65dbeccbf4d458db95687e825bde90
Author: Jens Axboe <axboe@...nel.dk>
Date:   Fri Aug 17 15:45:42 2018 -0700

    ext4: readpages() should submit IO as read-ahead

as that guy is generally just not trust worthy. In all seriousness, though, it
shouldn't cause issues (or I would not have done it), and we already do this
for readpages in general, but I guess we could have an older bug in ext4 that
depends deeply on read-ahead NOT failing. Not sure how likely that is, Ted can
probably comment on that.

But it's a trivial revert, and it could potentially be implicated.

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