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bcache: Fix another bug recovering from unclean shutdown

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The on disk bucket gens are allowed to be out of date, when we reuse buckets
that didn't have any live data in them. To deal with this, the initial gc has to
update the bucket gen when we find a pointer gen newer than the bucket's gen.

Unfortunately we weren't doing this for pointers in the journal that we're about
to replay.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Kent Overstreet
2014-03-17 15:13:26 -07:00
parent 0bd143fd80
commit 487dded86e
3 changed files with 36 additions and 65 deletions
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2
drivers/md/bcache/btree.h
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@@ -251,7 +251,7 @@ int bch_gc_thread_start(struct cache_set *);
size_t bch_btree_gc_finish(struct cache_set *);
void bch_moving_gc(struct cache_set *);
int bch_btree_check(struct cache_set *);
uint8_t __bch_btree_mark_key(struct cache_set *, int, struct bkey *);
void bch_initial_mark_key(struct cache_set *, int, struct bkey *);
static inline void wake_up_gc(struct cache_set *c)
{