[RFC PATCH v2 04/11] pstore: Add compression support to pstore

[Luck, Tony]

<1>[  383.209057] RIP  [<ffffffff813d3946>] sysrq_handle_crash+0x16/0x20
<4>[  383.209057]  RSP <ffff88006f551e80>
<4>[  383.209057] CR2: 0000000000000000
<4>[  383.209057] ---[ end trace 04a1cddad37b4b33 ]---
<3>[  383.209057] pstore: compression failed for Part 2 returned -5
<3>[  383.209057] pstore: Capture uncompressed oops/panic report of Part 2
<3>[  383.209057] pstore: compression failed for Part 5 returned -5

Interesting.  With ERST backend I didn't see these messages.  Traces in 
pstore recovered files go as far as the line before the "---[ end trace 04a1cddad37b4b33 ]---"

Why the difference depending on which back end is in use?

But I agree that we shouldn't have these messages.  They use up space
in the persistent store that could be better used saving some more lines
from earlier in the console log.

-Tony