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path: root/fs/bcachefs/journal.c
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Diffstat (limited to 'fs/bcachefs/journal.c')
-rw-r--r--fs/bcachefs/journal.c149
1 files changed, 77 insertions, 72 deletions
diff --git a/fs/bcachefs/journal.c b/fs/bcachefs/journal.c
index 5b5d69f2316b..8538ef34f62b 100644
--- a/fs/bcachefs/journal.c
+++ b/fs/bcachefs/journal.c
@@ -10,6 +10,7 @@
#include "bkey_methods.h"
#include "btree_gc.h"
#include "btree_update.h"
+#include "btree_write_buffer.h"
#include "buckets.h"
#include "error.h"
#include "journal.h"
@@ -184,6 +185,8 @@ static void __journal_entry_close(struct journal *j, unsigned closed_val)
/* Close out old buffer: */
buf->data->u64s = cpu_to_le32(old.cur_entry_offset);
+ trace_journal_entry_close(c, vstruct_bytes(buf->data));
+
sectors = vstruct_blocks_plus(buf->data, c->block_bits,
buf->u64s_reserved) << c->block_bits;
BUG_ON(sectors > buf->sectors);
@@ -249,7 +252,7 @@ static bool journal_entry_want_write(struct journal *j)
return ret;
}
-static bool journal_entry_close(struct journal *j)
+bool bch2_journal_entry_close(struct journal *j)
{
bool ret;
@@ -321,6 +324,8 @@ static int journal_entry_open(struct journal *j)
atomic64_inc(&j->seq);
journal_pin_list_init(fifo_push_ref(&j->pin), 1);
+ BUG_ON(j->pin.back - 1 != atomic64_read(&j->seq));
+
BUG_ON(j->buf + (journal_cur_seq(j) & JOURNAL_BUF_MASK) != buf);
bkey_extent_init(&buf->key);
@@ -328,6 +333,7 @@ static int journal_entry_open(struct journal *j)
buf->must_flush = false;
buf->separate_flush = false;
buf->flush_time = 0;
+ buf->need_flush_to_write_buffer = true;
memset(buf->data, 0, sizeof(*buf->data));
buf->data->seq = cpu_to_le64(journal_cur_seq(j));
@@ -361,11 +367,6 @@ static int journal_entry_open(struct journal *j)
} while ((v = atomic64_cmpxchg(&j->reservations.counter,
old.v, new.v)) != old.v);
- if (j->res_get_blocked_start)
- bch2_time_stats_update(j->blocked_time,
- j->res_get_blocked_start);
- j->res_get_blocked_start = 0;
-
mod_delayed_work(c->io_complete_wq,
&j->write_work,
msecs_to_jiffies(c->opts.journal_flush_delay));
@@ -381,7 +382,7 @@ static bool journal_quiesced(struct journal *j)
bool ret = atomic64_read(&j->seq) == j->seq_ondisk;
if (!ret)
- journal_entry_close(j);
+ bch2_journal_entry_close(j);
return ret;
}
@@ -434,7 +435,7 @@ retry:
/*
* Recheck after taking the lock, so we don't race with another thread
- * that just did journal_entry_open() and call journal_entry_close()
+ * that just did journal_entry_open() and call bch2_journal_entry_close()
* unnecessarily
*/
if (journal_res_get_fast(j, res, flags)) {
@@ -465,15 +466,12 @@ retry:
__journal_entry_close(j, JOURNAL_ENTRY_CLOSED_VAL);
ret = journal_entry_open(j);
- if (ret == JOURNAL_ERR_max_in_flight)
+ if (ret == JOURNAL_ERR_max_in_flight) {
+ track_event_change(&c->times[BCH_TIME_blocked_journal_max_in_flight],
+ &j->max_in_flight_start, true);
trace_and_count(c, journal_entry_full, c);
-unlock:
- if ((ret && ret != JOURNAL_ERR_insufficient_devices) &&
- !j->res_get_blocked_start) {
- j->res_get_blocked_start = local_clock() ?: 1;
- trace_and_count(c, journal_full, c);
}
-
+unlock:
can_discard = j->can_discard;
spin_unlock(&j->lock);
@@ -526,36 +524,6 @@ int bch2_journal_res_get_slowpath(struct journal *j, struct journal_res *res,
return ret;
}
-/* journal_preres: */
-
-static bool journal_preres_available(struct journal *j,
- struct journal_preres *res,
- unsigned new_u64s,
- unsigned flags)
-{
- bool ret = bch2_journal_preres_get_fast(j, res, new_u64s, flags, true);
-
- if (!ret && mutex_trylock(&j->reclaim_lock)) {
- bch2_journal_reclaim(j);
- mutex_unlock(&j->reclaim_lock);
- }
-
- return ret;
-}
-
-int __bch2_journal_preres_get(struct journal *j,
- struct journal_preres *res,
- unsigned new_u64s,
- unsigned flags)
-{
- int ret;
-
- closure_wait_event(&j->preres_wait,
- (ret = bch2_journal_error(j)) ||
- journal_preres_available(j, res, new_u64s, flags));
- return ret;
-}
-
/* journal_entry_res: */
void bch2_journal_entry_res_resize(struct journal *j,
@@ -802,6 +770,48 @@ void bch2_journal_block(struct journal *j)
journal_quiesce(j);
}
+static struct journal_buf *__bch2_next_write_buffer_flush_journal_buf(struct journal *j, u64 max_seq)
+{
+ struct journal_buf *ret = NULL;
+
+ mutex_lock(&j->buf_lock);
+ spin_lock(&j->lock);
+ max_seq = min(max_seq, journal_cur_seq(j));
+
+ for (u64 seq = journal_last_unwritten_seq(j);
+ seq <= max_seq;
+ seq++) {
+ unsigned idx = seq & JOURNAL_BUF_MASK;
+ struct journal_buf *buf = j->buf + idx;
+
+ if (buf->need_flush_to_write_buffer) {
+ if (seq == journal_cur_seq(j))
+ __journal_entry_close(j, JOURNAL_ENTRY_CLOSED_VAL);
+
+ union journal_res_state s;
+ s.v = atomic64_read_acquire(&j->reservations.counter);
+
+ ret = journal_state_count(s, idx)
+ ? ERR_PTR(-EAGAIN)
+ : buf;
+ break;
+ }
+ }
+
+ spin_unlock(&j->lock);
+ if (IS_ERR_OR_NULL(ret))
+ mutex_unlock(&j->buf_lock);
+ return ret;
+}
+
+struct journal_buf *bch2_next_write_buffer_flush_journal_buf(struct journal *j, u64 max_seq)
+{
+ struct journal_buf *ret;
+
+ wait_event(j->wait, (ret = __bch2_next_write_buffer_flush_journal_buf(j, max_seq)) != ERR_PTR(-EAGAIN));
+ return ret;
+}
+
/* allocate journal on a device: */
static int __bch2_set_nr_journal_buckets(struct bch_dev *ca, unsigned nr,
@@ -983,8 +993,7 @@ int bch2_set_nr_journal_buckets(struct bch_fs *c, struct bch_dev *ca,
break;
}
- if (ret)
- bch_err_fn(c, ret);
+ bch_err_fn(c, ret);
unlock:
up_write(&c->state_lock);
return ret;
@@ -1014,17 +1023,13 @@ int bch2_dev_journal_alloc(struct bch_dev *ca)
ret = __bch2_set_nr_journal_buckets(ca, nr, true, NULL);
err:
- if (ret)
- bch_err_fn(ca, ret);
+ bch_err_fn(ca, ret);
return ret;
}
int bch2_fs_journal_alloc(struct bch_fs *c)
{
- struct bch_dev *ca;
- unsigned i;
-
- for_each_online_member(ca, c, i) {
+ for_each_online_member(c, ca) {
if (ca->journal.nr)
continue;
@@ -1069,7 +1074,7 @@ void bch2_fs_journal_stop(struct journal *j)
bch2_journal_reclaim_stop(j);
bch2_journal_flush_all_pins(j);
- wait_event(j->wait, journal_entry_close(j));
+ wait_event(j->wait, bch2_journal_entry_close(j));
/*
* Always write a new journal entry, to make sure the clock hands are up
@@ -1253,6 +1258,7 @@ int bch2_fs_journal_init(struct journal *j)
static struct lock_class_key res_key;
unsigned i;
+ mutex_init(&j->buf_lock);
spin_lock_init(&j->lock);
spin_lock_init(&j->err_lock);
init_waitqueue_head(&j->wait);
@@ -1288,10 +1294,8 @@ void __bch2_journal_debug_to_text(struct printbuf *out, struct journal *j)
{
struct bch_fs *c = container_of(j, struct bch_fs, journal);
union journal_res_state s;
- struct bch_dev *ca;
unsigned long now = jiffies;
- u64 seq;
- unsigned i;
+ u64 nr_writes = j->nr_flush_writes + j->nr_noflush_writes;
if (!out->nr_tabstops)
printbuf_tabstop_push(out, 24);
@@ -1303,21 +1307,23 @@ void __bch2_journal_debug_to_text(struct printbuf *out, struct journal *j)
prt_printf(out, "dirty journal entries:\t%llu/%llu\n", fifo_used(&j->pin), j->pin.size);
prt_printf(out, "seq:\t\t\t%llu\n", journal_cur_seq(j));
prt_printf(out, "seq_ondisk:\t\t%llu\n", j->seq_ondisk);
- prt_printf(out, "last_seq:\t\t%llu\n", journal_last_seq(j));
+ prt_printf(out, "last_seq:\t\t%llu\n", journal_last_seq(j));
prt_printf(out, "last_seq_ondisk:\t%llu\n", j->last_seq_ondisk);
- prt_printf(out, "flushed_seq_ondisk:\t%llu\n", j->flushed_seq_ondisk);
- prt_printf(out, "prereserved:\t\t%u/%u\n", j->prereserved.reserved, j->prereserved.remaining);
- prt_printf(out, "watermark:\t\t%s\n", bch2_watermarks[j->watermark]);
- prt_printf(out, "each entry reserved:\t%u\n", j->entry_u64s_reserved);
+ prt_printf(out, "flushed_seq_ondisk:\t%llu\n", j->flushed_seq_ondisk);
+ prt_printf(out, "watermark:\t\t%s\n", bch2_watermarks[j->watermark]);
+ prt_printf(out, "each entry reserved:\t%u\n", j->entry_u64s_reserved);
prt_printf(out, "nr flush writes:\t%llu\n", j->nr_flush_writes);
- prt_printf(out, "nr noflush writes:\t%llu\n", j->nr_noflush_writes);
- prt_printf(out, "nr direct reclaim:\t%llu\n", j->nr_direct_reclaim);
+ prt_printf(out, "nr noflush writes:\t%llu\n", j->nr_noflush_writes);
+ prt_printf(out, "average write size:\t");
+ prt_human_readable_u64(out, nr_writes ? div64_u64(j->entry_bytes_written, nr_writes) : 0);
+ prt_newline(out);
+ prt_printf(out, "nr direct reclaim:\t%llu\n", j->nr_direct_reclaim);
prt_printf(out, "nr background reclaim:\t%llu\n", j->nr_background_reclaim);
prt_printf(out, "reclaim kicked:\t\t%u\n", j->reclaim_kicked);
- prt_printf(out, "reclaim runs in:\t%u ms\n", time_after(j->next_reclaim, now)
+ prt_printf(out, "reclaim runs in:\t%u ms\n", time_after(j->next_reclaim, now)
? jiffies_to_msecs(j->next_reclaim - jiffies) : 0);
- prt_printf(out, "current entry sectors:\t%u\n", j->cur_entry_sectors);
- prt_printf(out, "current entry error:\t%s\n", bch2_journal_errors[j->cur_entry_error]);
+ prt_printf(out, "current entry sectors:\t%u\n", j->cur_entry_sectors);
+ prt_printf(out, "current entry error:\t%s\n", bch2_journal_errors[j->cur_entry_error]);
prt_printf(out, "current entry:\t\t");
switch (s.cur_entry_offset) {
@@ -1334,10 +1340,10 @@ void __bch2_journal_debug_to_text(struct printbuf *out, struct journal *j)
prt_newline(out);
- for (seq = journal_cur_seq(j);
+ for (u64 seq = journal_cur_seq(j);
seq >= journal_last_unwritten_seq(j);
--seq) {
- i = seq & JOURNAL_BUF_MASK;
+ unsigned i = seq & JOURNAL_BUF_MASK;
prt_printf(out, "unwritten entry:");
prt_tab(out);
@@ -1381,8 +1387,7 @@ void __bch2_journal_debug_to_text(struct printbuf *out, struct journal *j)
j->space[journal_space_total].next_entry,
j->space[journal_space_total].total);
- for_each_member_device_rcu(ca, c, i,
- &c->rw_devs[BCH_DATA_journal]) {
+ for_each_member_device_rcu(c, ca, &c->rw_devs[BCH_DATA_journal]) {
struct journal_device *ja = &ca->journal;
if (!test_bit(ca->dev_idx, c->rw_devs[BCH_DATA_journal].d))
@@ -1391,7 +1396,7 @@ void __bch2_journal_debug_to_text(struct printbuf *out, struct journal *j)
if (!ja->nr)
continue;
- prt_printf(out, "dev %u:\n", i);
+ prt_printf(out, "dev %u:\n", ca->dev_idx);
prt_printf(out, "\tnr\t\t%u\n", ja->nr);
prt_printf(out, "\tbucket size\t%u\n", ca->mi.bucket_size);
prt_printf(out, "\tavailable\t%u:%u\n", bch2_journal_dev_buckets_available(j, ja, journal_space_discarded), ja->sectors_free);
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-13 02:33:54 +0300