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-rw-r--r--fs/bcachefs/alloc_background.h123
1 files changed, 83 insertions, 40 deletions
diff --git a/fs/bcachefs/alloc_background.h b/fs/bcachefs/alloc_background.h
index 2790e51638..ba2c5557a3 100644
--- a/fs/bcachefs/alloc_background.h
+++ b/fs/bcachefs/alloc_background.h
@@ -8,21 +8,18 @@
#include "debug.h"
#include "super.h"
-enum bkey_invalid_flags;
+enum bch_validate_flags;
/* How out of date a pointer gen is allowed to be: */
#define BUCKET_GC_GEN_MAX 96U
static inline bool bch2_dev_bucket_exists(struct bch_fs *c, struct bpos pos)
{
- struct bch_dev *ca;
-
- if (!bch2_dev_exists2(c, pos.inode))
- return false;
-
- ca = bch_dev_bkey_exists(c, pos.inode);
- return pos.offset >= ca->mi.first_bucket &&
- pos.offset < ca->mi.nbuckets;
+ rcu_read_lock();
+ struct bch_dev *ca = bch2_dev_rcu(c, pos.inode);
+ bool ret = ca && bucket_valid(ca, pos.offset);
+ rcu_read_unlock();
+ return ret;
}
static inline u64 bucket_to_u64(struct bpos bucket)
@@ -40,38 +37,50 @@ static inline u8 alloc_gc_gen(struct bch_alloc_v4 a)
return a.gen - a.oldest_gen;
}
-static inline enum bch_data_type __alloc_data_type(u32 dirty_sectors,
- u32 cached_sectors,
- u32 stripe,
- struct bch_alloc_v4 a,
- enum bch_data_type data_type)
+static inline void alloc_to_bucket(struct bucket *dst, struct bch_alloc_v4 src)
{
- if (stripe)
- return data_type == BCH_DATA_parity ? data_type : BCH_DATA_stripe;
- if (dirty_sectors)
- return data_type;
- if (cached_sectors)
- return BCH_DATA_cached;
- if (BCH_ALLOC_V4_NEED_DISCARD(&a))
- return BCH_DATA_need_discard;
- if (alloc_gc_gen(a) >= BUCKET_GC_GEN_MAX)
- return BCH_DATA_need_gc_gens;
- return BCH_DATA_free;
+ dst->gen = src.gen;
+ dst->data_type = src.data_type;
+ dst->dirty_sectors = src.dirty_sectors;
+ dst->cached_sectors = src.cached_sectors;
+ dst->stripe = src.stripe;
}
-static inline enum bch_data_type alloc_data_type(struct bch_alloc_v4 a,
- enum bch_data_type data_type)
+static inline void __bucket_m_to_alloc(struct bch_alloc_v4 *dst, struct bucket src)
+{
+ dst->gen = src.gen;
+ dst->data_type = src.data_type;
+ dst->dirty_sectors = src.dirty_sectors;
+ dst->cached_sectors = src.cached_sectors;
+ dst->stripe = src.stripe;
+}
+
+static inline struct bch_alloc_v4 bucket_m_to_alloc(struct bucket b)
{
- return __alloc_data_type(a.dirty_sectors, a.cached_sectors,
- a.stripe, a, data_type);
+ struct bch_alloc_v4 ret = {};
+ __bucket_m_to_alloc(&ret, b);
+ return ret;
}
static inline enum bch_data_type bucket_data_type(enum bch_data_type data_type)
{
- return data_type == BCH_DATA_stripe ? BCH_DATA_user : data_type;
+ switch (data_type) {
+ case BCH_DATA_cached:
+ case BCH_DATA_stripe:
+ return BCH_DATA_user;
+ default:
+ return data_type;
+ }
+}
+
+static inline bool bucket_data_type_mismatch(enum bch_data_type bucket,
+ enum bch_data_type ptr)
+{
+ return !data_type_is_empty(bucket) &&
+ bucket_data_type(bucket) != bucket_data_type(ptr);
}
-static inline unsigned bch2_bucket_sectors(struct bch_alloc_v4 a)
+static inline unsigned bch2_bucket_sectors_total(struct bch_alloc_v4 a)
{
return a.dirty_sectors + a.cached_sectors;
}
@@ -89,6 +98,27 @@ static inline unsigned bch2_bucket_sectors_fragmented(struct bch_dev *ca,
return d ? max(0, ca->mi.bucket_size - d) : 0;
}
+static inline enum bch_data_type alloc_data_type(struct bch_alloc_v4 a,
+ enum bch_data_type data_type)
+{
+ if (a.stripe)
+ return data_type == BCH_DATA_parity ? data_type : BCH_DATA_stripe;
+ if (a.dirty_sectors)
+ return data_type;
+ if (a.cached_sectors)
+ return BCH_DATA_cached;
+ if (BCH_ALLOC_V4_NEED_DISCARD(&a))
+ return BCH_DATA_need_discard;
+ if (alloc_gc_gen(a) >= BUCKET_GC_GEN_MAX)
+ return BCH_DATA_need_gc_gens;
+ return BCH_DATA_free;
+}
+
+static inline void alloc_data_type_set(struct bch_alloc_v4 *a, enum bch_data_type data_type)
+{
+ a->data_type = alloc_data_type(*a, data_type);
+}
+
static inline u64 alloc_lru_idx_read(struct bch_alloc_v4 a)
{
return a.data_type == BCH_DATA_cached ? a.io_time[READ] : 0;
@@ -111,7 +141,13 @@ static inline u64 alloc_lru_idx_fragmentation(struct bch_alloc_v4 a,
!bch2_bucket_sectors_fragmented(ca, a))
return 0;
- u64 d = bch2_bucket_sectors_dirty(a);
+ /*
+ * avoid overflowing LRU_TIME_BITS on a corrupted fs, when
+ * bucket_sectors_dirty is (much) bigger than bucket_size
+ */
+ u64 d = min(bch2_bucket_sectors_dirty(a),
+ ca->mi.bucket_size);
+
return div_u64(d * (1ULL << 31), ca->mi.bucket_size);
}
@@ -147,7 +183,9 @@ static inline void set_alloc_v4_u64s(struct bkey_i_alloc_v4 *a)
}
struct bkey_i_alloc_v4 *
-bch2_trans_start_alloc_update(struct btree_trans *, struct btree_iter *, struct bpos);
+bch2_trans_start_alloc_update_noupdate(struct btree_trans *, struct btree_iter *, struct bpos);
+struct bkey_i_alloc_v4 *
+bch2_trans_start_alloc_update(struct btree_trans *, struct bpos);
void __bch2_alloc_to_v4(struct bkey_s_c, struct bch_alloc_v4 *);
@@ -173,13 +211,13 @@ struct bkey_i_alloc_v4 *bch2_alloc_to_v4_mut(struct btree_trans *, struct bkey_s
int bch2_bucket_io_time_reset(struct btree_trans *, unsigned, size_t, int);
int bch2_alloc_v1_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
+ enum bch_validate_flags, struct printbuf *);
int bch2_alloc_v2_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
+ enum bch_validate_flags, struct printbuf *);
int bch2_alloc_v3_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
+ enum bch_validate_flags, struct printbuf *);
int bch2_alloc_v4_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
+ enum bch_validate_flags, struct printbuf *);
void bch2_alloc_v4_swab(struct bkey_s);
void bch2_alloc_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
@@ -213,7 +251,7 @@ void bch2_alloc_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
})
int bch2_bucket_gens_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
+ enum bch_validate_flags, struct printbuf *);
void bch2_bucket_gens_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
#define bch2_bkey_ops_bucket_gens ((struct bkey_ops) { \
@@ -233,9 +271,11 @@ static inline bool bkey_is_alloc(const struct bkey *k)
int bch2_alloc_read(struct bch_fs *);
int bch2_trigger_alloc(struct btree_trans *, enum btree_id, unsigned,
- struct bkey_s_c, struct bkey_s, unsigned);
+ struct bkey_s_c, struct bkey_s,
+ enum btree_iter_update_trigger_flags);
int bch2_check_alloc_info(struct bch_fs *);
int bch2_check_alloc_to_lru_refs(struct bch_fs *);
+void bch2_dev_do_discards(struct bch_dev *);
void bch2_do_discards(struct bch_fs *);
static inline u64 should_invalidate_buckets(struct bch_dev *ca,
@@ -250,6 +290,7 @@ static inline u64 should_invalidate_buckets(struct bch_dev *ca,
return clamp_t(s64, want_free - free, 0, u.d[BCH_DATA_cached].buckets);
}
+void bch2_dev_do_invalidates(struct bch_dev *);
void bch2_do_invalidates(struct bch_fs *);
static inline struct bch_backpointer *alloc_v4_backpointers(struct bch_alloc_v4 *a)
@@ -273,7 +314,9 @@ u64 bch2_min_rw_member_capacity(struct bch_fs *);
void bch2_dev_allocator_remove(struct bch_fs *, struct bch_dev *);
void bch2_dev_allocator_add(struct bch_fs *, struct bch_dev *);
-void bch2_fs_allocator_background_exit(struct bch_fs *);
+void bch2_dev_allocator_background_exit(struct bch_dev *);
+void bch2_dev_allocator_background_init(struct bch_dev *);
+
void bch2_fs_allocator_background_init(struct bch_fs *);
#endif /* _BCACHEFS_ALLOC_BACKGROUND_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 06:47:15 +0000