bcache: Fix an infinite loop in journal replay
When running with multiple cache devices, if one of the devices has a completely empty journal but we'd already found some journal entries on a previosu device we'd go into an infinite loop. Change-Id: I1dcdc0d738192746de28f40e8b08825b0dea5e2b Signed-off-by: Kent Overstreet <kmo@daterainc.com>
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@ -190,9 +190,12 @@ int bch_journal_read(struct cache_set *c, struct list_head *list)
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if (read_bucket(l))
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goto bsearch;
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if (list_empty(list))
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/* no journal entries on this device? */
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if (l == ca->sb.njournal_buckets)
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continue;
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bsearch:
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BUG_ON(list_empty(list));
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/* Binary search */
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m = l;
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r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1);
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