bcachefs: Improve journal entry validate code

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Previously, the journal entry read code was changed so that if we got a
journal entry that failed validation, we'd try to use it, preferring to
use a good version from another device if available.

But this left a bug where if an earlier validation check (say, checksum)
failed, the later checks (for last_seq) wouldn't run and we'd end up
using a journal entry with a garbage last_seq field. This fixes that so
that the later validation checks run and if necessary change those
fields to something sensible.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Kent Overstreet 2020-11-13 14:39:43 -05:00 • committed by Kent Overstreet

parent eb8e6e9ccb

commit 35ef6df5ca

1 changed files with 16 additions and 17 deletions

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fs/bcachefs/journal_io.c

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