*/
#include <linux/hash.h>
+#include <linux/prefetch.h>
#include "journal_types.h"
return j->pin.back - 1;
}
-void bch2_journal_set_has_inum(struct journal *, u64, u64);
+static inline u64 journal_last_unwritten_seq(struct journal *j)
+{
+ return j->seq_ondisk + 1;
+}
static inline int journal_state_count(union journal_res_state s, int idx)
{
return vstruct_idx(j->buf[res->idx].data, res->offset);
}
-static inline unsigned journal_entry_set(struct jset_entry *entry, unsigned type,
+static inline unsigned journal_entry_init(struct jset_entry *entry, unsigned type,
enum btree_id id, unsigned level,
- const void *data, unsigned u64s)
+ unsigned u64s)
{
entry->u64s = cpu_to_le16(u64s);
entry->btree_id = id;
entry->pad[0] = 0;
entry->pad[1] = 0;
entry->pad[2] = 0;
- memcpy_u64s_small(entry->_data, data, u64s);
-
return jset_u64s(u64s);
}
-static inline void bch2_journal_add_entry(struct journal *j, struct journal_res *res,
- unsigned type, enum btree_id id,
- unsigned level,
+static inline unsigned journal_entry_set(struct jset_entry *entry, unsigned type,
+ enum btree_id id, unsigned level,
const void *data, unsigned u64s)
{
- unsigned actual = journal_entry_set(journal_res_entry(j, res),
- type, id, level, data, u64s);
+ unsigned ret = journal_entry_init(entry, type, id, level, u64s);
+
+ memcpy_u64s_small(entry->_data, data, u64s);
+ return ret;
+}
+
+static inline struct jset_entry *
+bch2_journal_add_entry(struct journal *j, struct journal_res *res,
+ unsigned type, enum btree_id id,
+ unsigned level, unsigned u64s)
+{
+ struct jset_entry *entry = journal_res_entry(j, res);
+ unsigned actual = journal_entry_init(entry, type, id, level, u64s);
EBUG_ON(!res->ref);
EBUG_ON(actual > res->u64s);
res->offset += actual;
res->u64s -= actual;
-}
-
-static inline void bch2_journal_add_keys(struct journal *j, struct journal_res *res,
- enum btree_id id, unsigned level,
- const struct bkey_i *k)
-{
- bch2_journal_add_entry(j, res, BCH_JSET_ENTRY_btree_keys,
- id, level, k, k->k.u64s);
+ return entry;
}
static inline bool journal_entry_empty(struct jset *j)
.buf3_count = idx == 3,
}).v, &j->reservations.counter);
- EBUG_ON(((s.idx - idx) & 3) >
- ((s.idx - s.unwritten_idx) & 3));
-
if (!journal_state_count(s, idx) && idx == s.unwritten_idx)
__bch2_journal_buf_put(j);
}
while (res->u64s)
bch2_journal_add_entry(j, res,
BCH_JSET_ENTRY_btree_keys,
- 0, 0, NULL, 0);
+ 0, 0, 0);
bch2_journal_buf_put(j, res->idx);
int bch2_journal_res_get_slowpath(struct journal *, struct journal_res *,
unsigned);
-#define JOURNAL_RES_GET_NONBLOCK (1 << 0)
-#define JOURNAL_RES_GET_CHECK (1 << 1)
-#define JOURNAL_RES_GET_RESERVED (1 << 2)
+/* First two bits for JOURNAL_WATERMARK: */
+#define JOURNAL_RES_GET_NONBLOCK (1 << 2)
+#define JOURNAL_RES_GET_CHECK (1 << 3)
static inline int journal_res_get_fast(struct journal *j,
struct journal_res *res,
{
union journal_res_state old, new;
u64 v = atomic64_read(&j->reservations.counter);
+ unsigned u64s, offset;
do {
old.v = new.v = v;
+ /*
+ * Round up the end of the journal reservation to the next
+ * cacheline boundary:
+ */
+ u64s = res->u64s;
+ offset = sizeof(struct jset) / sizeof(u64) +
+ new.cur_entry_offset + u64s;
+ u64s += ((offset - 1) & ((SMP_CACHE_BYTES / sizeof(u64)) - 1)) + 1;
+
+
/*
* Check if there is still room in the current journal
* entry:
*/
- if (new.cur_entry_offset + res->u64s > j->cur_entry_u64s)
+ if (new.cur_entry_offset + u64s > j->cur_entry_u64s)
return 0;
EBUG_ON(!journal_state_count(new, new.idx));
- if (!(flags & JOURNAL_RES_GET_RESERVED) &&
- !test_bit(JOURNAL_MAY_GET_UNRESERVED, &j->flags))
+ if ((flags & JOURNAL_WATERMARK_MASK) < j->watermark)
return 0;
- new.cur_entry_offset += res->u64s;
+ new.cur_entry_offset += u64s;
journal_state_inc(&new);
/*
res->ref = true;
res->idx = old.idx;
+ res->u64s = u64s;
res->offset = old.cur_entry_offset;
res->seq = le64_to_cpu(j->buf[old.idx].data->seq);
+
+ offset = res->offset;
+ while (offset < res->offset + res->u64s) {
+ prefetchw(vstruct_idx(j->buf[res->idx].data, offset));
+ offset += SMP_CACHE_BYTES / sizeof(u64);
+ }
return 1;
}
/* journal_preres: */
-static inline bool journal_check_may_get_unreserved(struct journal *j)
+static inline void journal_set_watermark(struct journal *j)
{
union journal_preres_state s = READ_ONCE(j->prereserved);
- bool ret = s.reserved < s.remaining &&
- fifo_free(&j->pin) > 8;
-
- lockdep_assert_held(&j->lock);
-
- if (ret != test_bit(JOURNAL_MAY_GET_UNRESERVED, &j->flags)) {
- if (ret) {
- set_bit(JOURNAL_MAY_GET_UNRESERVED, &j->flags);
- journal_wake(j);
- } else {
- clear_bit(JOURNAL_MAY_GET_UNRESERVED, &j->flags);
- }
- }
- return ret;
+ unsigned watermark = JOURNAL_WATERMARK_any;
+
+ if (fifo_free(&j->pin) < j->pin.size / 4)
+ watermark = max_t(unsigned, watermark, JOURNAL_WATERMARK_copygc);
+ if (fifo_free(&j->pin) < j->pin.size / 8)
+ watermark = max_t(unsigned, watermark, JOURNAL_WATERMARK_reserved);
+
+ if (s.reserved > s.remaining)
+ watermark = max_t(unsigned, watermark, JOURNAL_WATERMARK_copygc);
+ if (!s.remaining)
+ watermark = max_t(unsigned, watermark, JOURNAL_WATERMARK_reserved);
+
+ if (watermark == j->watermark)
+ return;
+
+ swap(watermark, j->watermark);
+ if (watermark > j->watermark)
+ journal_wake(j);
}
static inline void bch2_journal_preres_put(struct journal *j,
closure_wake_up(&j->preres_wait);
}
- if (s.reserved <= s.remaining &&
- !test_bit(JOURNAL_MAY_GET_UNRESERVED, &j->flags)) {
- spin_lock(&j->lock);
- journal_check_may_get_unreserved(j);
- spin_unlock(&j->lock);
- }
+ if (s.reserved <= s.remaining && j->watermark)
+ journal_set_watermark(j);
}
int __bch2_journal_preres_get(struct journal *,
old.v = new.v = v;
ret = 0;
- if ((flags & JOURNAL_RES_GET_RESERVED) ||
- test_bit(JOURNAL_NOCHANGES, &j->flags) ||
+ if ((flags & JOURNAL_WATERMARK_reserved) ||
new.reserved + d < new.remaining) {
new.reserved += d;
ret = 1;
int bch2_journal_flush(struct journal *);
bool bch2_journal_noflush_seq(struct journal *, u64);
int bch2_journal_meta(struct journal *);
+int bch2_journal_log_msg(struct journal *, const char *, ...);
void bch2_journal_halt(struct journal *);
void __bch2_journal_debug_to_text(struct printbuf *, struct journal *);
void bch2_journal_debug_to_text(struct printbuf *, struct journal *);
void bch2_journal_pins_to_text(struct printbuf *, struct journal *);
+bool bch2_journal_seq_pins_to_text(struct printbuf *, struct journal *, u64 *);
int bch2_set_nr_journal_buckets(struct bch_fs *, struct bch_dev *,
unsigned nr);
void bch2_dev_journal_stop(struct journal *, struct bch_dev *);
void bch2_fs_journal_stop(struct journal *);
-int bch2_fs_journal_start(struct journal *, u64, struct list_head *);
+int bch2_fs_journal_start(struct journal *, u64);
void bch2_dev_journal_exit(struct bch_dev *);
int bch2_dev_journal_init(struct bch_dev *, struct bch_sb *);
projects / bcachefs-tools-debian / blobdiff