bcachefs: Fix a "no journal entries found" bug

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On startup, we need to ensure the first journal entry written is a flush
write: after a clean shutdown we generally don't read the journal, which
means we might be overwriting whatever was there previously, and there
must always be at least one flush entry in the journal or recovery will
fail.

Found by fstests generic/388.

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

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This commit is contained in:

Kent Overstreet 2022-12-02 11:45:58 -05:00

parent e0de429a3a

commit b9004e8576

3 changed files with 38 additions and 7 deletions

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34

fs/bcachefs/journal_io.c

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3

fs/bcachefs/journal_types.h

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8

fs/bcachefs/super.c

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