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bcachefs: Simplify resuming of journal position

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-04-26 00:31:14 -04:00
parent 83c38e3ef8
commit c8bda9f20a
2 changed files with 8 additions and 43 deletions
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50
fs/bcachefs/journal_io.c
View File

@ -1089,6 +1089,13 @@ reread:
goto err;
}
if (le64_to_cpu(j->seq) > ja->highest_seq_found) {
ja->highest_seq_found = le64_to_cpu(j->seq);
ja->cur_idx = bucket;
ja->sectors_free = ca->mi.bucket_size -
bucket_remainder(ca, offset) - sectors;
}
/*
* This happens sometimes if we don't have discards on -
* when we've partially overwritten a bucket with new
@ -1157,8 +1164,6 @@ static CLOSURE_CALLBACK(bch2_journal_read_device)
struct bch_fs *c = ca->fs;
struct journal_list *jlist =
container_of(cl->parent, struct journal_list, cl);
struct journal_replay *r, **_r;
struct genradix_iter iter;
struct journal_read_buf buf = { NULL, 0 };
unsigned i;
int ret = 0;
@ -1178,47 +1183,6 @@ static CLOSURE_CALLBACK(bch2_journal_read_device)
goto err;
}
ja->sectors_free = ca->mi.bucket_size;
mutex_lock(&jlist->lock);
genradix_for_each_reverse(&c->journal_entries, iter, _r) {
r = *_r;
if (!r)
continue;
darray_for_each(r->ptrs, i)
if (i->dev == ca->dev_idx) {
unsigned wrote = bucket_remainder(ca, i->sector) +
vstruct_sectors(&r->j, c->block_bits);
ja->cur_idx = i->bucket;
ja->sectors_free = ca->mi.bucket_size - wrote;
goto found;
}
}
found:
mutex_unlock(&jlist->lock);
if (ja->bucket_seq[ja->cur_idx] &&
ja->sectors_free == ca->mi.bucket_size) {
#if 0
/*
* Debug code for ZNS support, where we (probably) want to be
* correlated where we stopped in the journal to the zone write
* points:
*/
bch_err(c, "ja->sectors_free == ca->mi.bucket_size");
bch_err(c, "cur_idx %u/%u", ja->cur_idx, ja->nr);
for (i = 0; i < 3; i++) {
unsigned idx = (ja->cur_idx + ja->nr - 1 + i) % ja->nr;
bch_err(c, "bucket_seq[%u] = %llu", idx, ja->bucket_seq[idx]);
}
#endif
ja->sectors_free = 0;
}
/*
* Set dirty_idx to indicate the entire journal is full and needs to be
* reclaimed - journal reclaim will immediately reclaim whatever isn't

1
fs/bcachefs/journal_types.h
View File

@ -327,6 +327,7 @@ struct journal_device {
/* for bch_journal_read_device */
struct closure read;
u64 highest_seq_found;
};
/*