#define _BUCKETS_H
#include "buckets_types.h"
+#include "extents.h"
#include "super.h"
#define for_each_bucket(_b, _buckets) \
for (_b = (_buckets)->b + (_buckets)->first_bucket; \
_b < (_buckets)->b + (_buckets)->nbuckets; _b++)
-#define bucket_cmpxchg(g, new, expr) \
-({ \
- struct bucket *_g = g; \
- u64 _v = atomic64_read(&(g)->_mark.v); \
- struct bucket_mark _old; \
- \
- do { \
- (new).v.counter = _old.v.counter = _v; \
- expr; \
- } while ((_v = atomic64_cmpxchg(&(_g)->_mark.v, \
- _old.v.counter, \
- (new).v.counter)) != _old.v.counter);\
- _old; \
-})
-
-static inline struct bucket_array *__bucket_array(struct bch_dev *ca,
- bool gc)
+static inline void bucket_unlock(struct bucket *b)
{
- return rcu_dereference_check(ca->buckets[gc],
- !ca->fs ||
- percpu_rwsem_is_held(&ca->fs->mark_lock) ||
- lockdep_is_held(&ca->fs->gc_lock) ||
- lockdep_is_held(&ca->bucket_lock));
+ smp_store_release(&b->lock, 0);
}
-static inline struct bucket_array *bucket_array(struct bch_dev *ca)
+static inline void bucket_lock(struct bucket *b)
{
- return __bucket_array(ca, false);
+ while (xchg(&b->lock, 1))
+ cpu_relax();
}
-static inline struct bucket *__bucket(struct bch_dev *ca, size_t b, bool gc)
+static inline struct bucket_array *gc_bucket_array(struct bch_dev *ca)
{
- struct bucket_array *buckets = __bucket_array(ca, gc);
-
- BUG_ON(b < buckets->first_bucket || b >= buckets->nbuckets);
- return buckets->b + b;
+ return rcu_dereference_check(ca->buckets_gc,
+ !ca->fs ||
+ percpu_rwsem_is_held(&ca->fs->mark_lock) ||
+ lockdep_is_held(&ca->fs->gc_lock) ||
+ lockdep_is_held(&ca->bucket_lock));
}
static inline struct bucket *gc_bucket(struct bch_dev *ca, size_t b)
{
- return __bucket(ca, b, true);
-}
+ struct bucket_array *buckets = gc_bucket_array(ca);
-static inline struct bucket *bucket(struct bch_dev *ca, size_t b)
-{
- return __bucket(ca, b, false);
+ BUG_ON(b < buckets->first_bucket || b >= buckets->nbuckets);
+ return buckets->b + b;
}
static inline struct bucket_gens *bucket_gens(struct bch_dev *ca)
percpu_rwsem_is_held(&ca->fs->mark_lock) ||
lockdep_is_held(&ca->fs->gc_lock) ||
lockdep_is_held(&ca->bucket_lock));
-
}
static inline u8 *bucket_gen(struct bch_dev *ca, size_t b)
return gens->b + b;
}
-/*
- * bucket_gc_gen() returns the difference between the bucket's current gen and
- * the oldest gen of any pointer into that bucket in the btree.
- */
-
-static inline u8 bucket_gc_gen(struct bucket *g)
+static inline size_t PTR_BUCKET_NR(const struct bch_dev *ca,
+ const struct bch_extent_ptr *ptr)
{
- return g->mark.gen - g->oldest_gen;
+ return sector_to_bucket(ca, ptr->offset);
}
-static inline size_t PTR_BUCKET_NR(const struct bch_dev *ca,
+static inline struct bpos PTR_BUCKET_POS(const struct bch_fs *c,
const struct bch_extent_ptr *ptr)
{
- return sector_to_bucket(ca, ptr->offset);
+ struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
+
+ return POS(ptr->dev, PTR_BUCKET_NR(ca, ptr));
+}
+
+static inline struct bpos PTR_BUCKET_POS_OFFSET(const struct bch_fs *c,
+ const struct bch_extent_ptr *ptr,
+ u32 *bucket_offset)
+{
+ struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
+
+ return POS(ptr->dev, sector_to_bucket_and_offset(ca, ptr->offset, bucket_offset));
}
static inline struct bucket *PTR_GC_BUCKET(struct bch_dev *ca,
static inline enum bch_data_type ptr_data_type(const struct bkey *k,
const struct bch_extent_ptr *ptr)
{
- if (k->type == KEY_TYPE_btree_ptr ||
- k->type == KEY_TYPE_btree_ptr_v2)
+ if (bkey_is_btree_ptr(k))
return BCH_DATA_btree;
return ptr->cached ? BCH_DATA_cached : BCH_DATA_user;
}
+static inline s64 ptr_disk_sectors(s64 sectors, struct extent_ptr_decoded p)
+{
+ EBUG_ON(sectors < 0);
+
+ return crc_is_compressed(p.crc)
+ ? DIV_ROUND_UP_ULL(sectors * p.crc.compressed_size,
+ p.crc.uncompressed_size)
+ : sectors;
+}
+
static inline int gen_cmp(u8 a, u8 b)
{
return (s8) (a - b);
return ret;
}
-/* bucket gc marks */
+/* Device usage: */
-static inline bool is_available_bucket(struct bucket_mark mark)
+void bch2_dev_usage_read_fast(struct bch_dev *, struct bch_dev_usage *);
+static inline struct bch_dev_usage bch2_dev_usage_read(struct bch_dev *ca)
{
- return !mark.dirty_sectors && !mark.stripe;
-}
+ struct bch_dev_usage ret;
-/* Device usage: */
+ bch2_dev_usage_read_fast(ca, &ret);
+ return ret;
+}
-struct bch_dev_usage bch2_dev_usage_read(struct bch_dev *);
+void bch2_dev_usage_init(struct bch_dev *);
-static inline u64 __dev_buckets_available(struct bch_dev *ca,
- struct bch_dev_usage stats)
+static inline u64 bch2_dev_buckets_reserved(struct bch_dev *ca, enum alloc_reserve reserve)
{
- u64 total = ca->mi.nbuckets - ca->mi.first_bucket;
-
- if (WARN_ONCE(stats.buckets_unavailable > total,
- "buckets_unavailable overflow (%llu > %llu)\n",
- stats.buckets_unavailable, total))
- return 0;
-
- return total - stats.buckets_unavailable;
+ s64 reserved = 0;
+
+ switch (reserve) {
+ case RESERVE_none:
+ reserved += ca->mi.nbuckets >> 6;
+ fallthrough;
+ case RESERVE_movinggc:
+ reserved += ca->nr_btree_reserve;
+ fallthrough;
+ case RESERVE_btree:
+ reserved += ca->nr_btree_reserve;
+ fallthrough;
+ case RESERVE_btree_movinggc:
+ break;
+ }
+
+ return reserved;
}
-static inline u64 dev_buckets_available(struct bch_dev *ca)
+static inline u64 dev_buckets_free(struct bch_dev *ca,
+ struct bch_dev_usage usage,
+ enum alloc_reserve reserve)
{
- return __dev_buckets_available(ca, bch2_dev_usage_read(ca));
+ return max_t(s64, 0,
+ usage.d[BCH_DATA_free].buckets -
+ ca->nr_open_buckets -
+ bch2_dev_buckets_reserved(ca, reserve));
}
-static inline u64 __dev_buckets_reclaimable(struct bch_dev *ca,
- struct bch_dev_usage stats)
+static inline u64 __dev_buckets_available(struct bch_dev *ca,
+ struct bch_dev_usage usage,
+ enum alloc_reserve reserve)
{
- struct bch_fs *c = ca->fs;
- s64 available = __dev_buckets_available(ca, stats);
- unsigned i;
-
- spin_lock(&c->freelist_lock);
- for (i = 0; i < RESERVE_NR; i++)
- available -= fifo_used(&ca->free[i]);
- available -= fifo_used(&ca->free_inc);
- available -= ca->nr_open_buckets;
- spin_unlock(&c->freelist_lock);
-
- return max(available, 0LL);
+ 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));
}
-static inline u64 dev_buckets_reclaimable(struct bch_dev *ca)
+static inline u64 dev_buckets_available(struct bch_dev *ca,
+ enum alloc_reserve reserve)
{
- return __dev_buckets_reclaimable(ca, bch2_dev_usage_read(ca));
+ return __dev_buckets_available(ca, bch2_dev_usage_read(ca), reserve);
}
/* Filesystem usage: */
static inline unsigned fs_usage_u64s(struct bch_fs *c)
{
-
return sizeof(struct bch_fs_usage) / sizeof(u64) +
READ_ONCE(c->replicas.nr);
}
void bch2_fs_usage_initialize(struct bch_fs *);
-void bch2_mark_alloc_bucket(struct bch_fs *, struct bch_dev *, size_t, bool);
-void bch2_mark_metadata_bucket(struct bch_fs *, struct bch_dev *,
- size_t, enum bch_data_type, unsigned,
- struct gc_pos, unsigned);
+int bch2_mark_metadata_bucket(struct bch_fs *, struct bch_dev *,
+ size_t, enum bch_data_type, unsigned,
+ struct gc_pos, unsigned);
-int bch2_mark_key(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
+int bch2_mark_alloc(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
+int bch2_mark_extent(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
+int bch2_mark_stripe(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
+int bch2_mark_inode(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
+int bch2_mark_reservation(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
+int bch2_mark_reflink_p(struct btree_trans *, struct bkey_s_c, struct bkey_s_c, unsigned);
-int bch2_mark_update(struct btree_trans *, struct btree_path *,
- struct bkey_i *, unsigned);
+int bch2_trans_mark_extent(struct btree_trans *, enum btree_id, unsigned, struct bkey_s_c, struct bkey_i *, unsigned);
+int bch2_trans_mark_stripe(struct btree_trans *, enum btree_id, unsigned, struct bkey_s_c, struct bkey_i *, unsigned);
+int bch2_trans_mark_inode(struct btree_trans *, enum btree_id, unsigned, struct bkey_s_c, struct bkey_i *, unsigned);
+int bch2_trans_mark_reservation(struct btree_trans *, enum btree_id, unsigned, struct bkey_s_c, struct bkey_i *, unsigned);
+int bch2_trans_mark_reflink_p(struct btree_trans *, enum btree_id, unsigned, struct bkey_s_c, struct bkey_i *, unsigned);
-int bch2_trans_mark_key(struct btree_trans *, struct bkey_s_c,
- struct bkey_s_c, unsigned);
int bch2_trans_fs_usage_apply(struct btree_trans *, struct replicas_delta_list *);
int bch2_trans_mark_metadata_bucket(struct btree_trans *, struct bch_dev *,
projects / bcachefs-tools-debian / blobdiff