bcachefs: Fix recovery when forced to use JSET_NO_FLUSH journal entry

When we didn't find anything in the journal that we'd like to use, and
we're forced to use whatever we can find - that entry will have been a
JSET_NO_FLUSH entry with a garbage last_seq value, since it's not
normally used.

Initialize it to something sane, for bch2_fs_journal_start().

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

diff --git a/fs/bcachefs/recovery.c b/fs/bcachefs/recovery.c
index 9600b808317534b317e5836802f483c67299c46a..9c30500ce9200af8be8f71a50f5fa02c356e4400 100644 (file)
--- a/fs/bcachefs/recovery.c
+++ b/fs/bcachefs/recovery.c
@@ -735,6 +735,13 @@ int bch2_fs_recovery(struct bch_fs *c)
                                if (*i) {
                                        last_journal_entry = &(*i)->j;
                                        (*i)->ignore = false;
+                                       /*
+                                        * This was probably a NO_FLUSH entry,
+                                        * so last_seq was garbage - but we know
+                                        * we're only using a single journal
+                                        * entry, set it here:
+                                        */
+                                       (*i)->j.last_seq = (*i)->j.seq;
                                        break;
                                }
                }