[Bug 201685] ext4 file system corruption

[bugzilla-daemon@bugzilla.kernel.org]

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

--- Comment #86 from Rainer Fiebig (jrf@mailbox.org) ---
(In reply to Hao Wei Tee from comment #85)
> (In reply to Rainer Fiebig from comment #83)
> > Interesting idea. But what works in one direction might not necessarily
> work
> > the other way round.
> 
> Exactly my point. We know that (4.19 ext4 and kernel is broken), (4.18 ext4
> and kernel is working), and (4.18 ext4 and 4.19 kernel is working).
> 
> If (4.19 ext4 and 4.18 kernel) is broken, then _most likely_ the bug is
> caused by something that changed in v4.18..v4.19. If (4.19 ext4 and 4.18
> kernel) *works*, then either the bug is in something else that changed, or
> there is an interaction between two changes that happened in v4.18..v4.19.
> 
Sure, I understand this. I would just shy away from recommending this to others
without a nod from higher powers. But of course it's up to Nestor whether he
wants to try this or not.

> In any case, bisecting v4.18..v4.19 will probably give us a clue.
Let's hope for the best. Perhaps bisecting fs/ext4 will provide enough of a
clue already and spare the poor bisecter to have to bisect the whole beast. ;)

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