RE: [PATCH] pstore: avoid recursive spinlocks in theoops_in_progress case

[Luck, Tony]

> Mm... why break?

We don't know what the back-end driver will do if we allow another call
while a previous one is still in progress.  It might end up corrupting the
backing non-volatile storage and losing some previously saved records.

Existing drivers (ERST and EFI) are dependent on f/w ... so things might
work on some platforms, yet be horribly bad on others.

The patch as it was written converts a deadlock (hang) case into a "lose
this log, but keep going" case. Which seems to be an improvement without
taking any risks about what the backend will do.

-Tony
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