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bcachefs: fix __dev_available().

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__dev_available() now calculates available buckets correctly. Previously
it would almost always return 0 when we have cached data.

Signed-off-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Daniel Hill 2022-06-23 10:28:30 +12:00 committed by Kent Overstreet
parent 2817d45381
commit 58aaa0836b
1 changed files with 6 additions and 6 deletions
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12
fs/bcachefs/buckets.h
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@ -159,12 +159,12 @@ static inline u64 __dev_buckets_available(struct bch_dev *ca,
enum alloc_reserve reserve)
{
return max_t(s64, 0,
usage.d[BCH_DATA_free].buckets -
usage.d[BCH_DATA_cached].buckets -
usage.d[BCH_DATA_need_gc_gens].buckets -
usage.d[BCH_DATA_need_discard].buckets -
ca->nr_open_buckets -
bch2_dev_buckets_reserved(ca, reserve));
usage.d[BCH_DATA_free].buckets
+ usage.d[BCH_DATA_cached].buckets
+ usage.d[BCH_DATA_need_gc_gens].buckets
+ usage.d[BCH_DATA_need_discard].buckets
- ca->nr_open_buckets
- bch2_dev_buckets_reserved(ca, reserve));
}
static inline u64 dev_buckets_available(struct bch_dev *ca,