bcachefs: Delete some obsolete journal_seq_blacklist code

Since metadata version bcachefs_metadata_version_btree_ptr_sectors_written,
we haven't needed the journal seq blacklist mechanism for ignoring
blacklisted btree node writes - we now only need it for ignoring journal
entries that were written after the newest flush journal entry, and then
we only need to keep those blacklist entries around until journal replay
is finished.

That means we can delete the code for scanning btree nodes to GC
journal_seq_blacklist entries.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

1 files changed, 0 insertions, 78 deletions

diff --git a/fs/bcachefs/journal_seq_blacklist.c b/fs/bcachefs/journal_seq_blacklist.c
index 79bc0e49389b..10bd23e969d2 100644
--- a/fs/bcachefs/journal_seq_blacklist.c
+++ b/fs/bcachefs/journal_seq_blacklist.c
@@ -235,81 +235,3 @@ const struct bch_sb_field_ops bch_sb_field_ops_journal_seq_blacklist = {
 	.validate	= bch2_sb_journal_seq_blacklist_validate,
 	.to_text	= bch2_sb_journal_seq_blacklist_to_text
 };
-
-void bch2_blacklist_entries_gc(struct work_struct *work)
-{
-	struct bch_fs *c = container_of(work, struct bch_fs,
-					journal_seq_blacklist_gc_work);
-	struct journal_seq_blacklist_table *t;
-	struct bch_sb_field_journal_seq_blacklist *bl;
-	struct journal_seq_blacklist_entry *src, *dst;
-	struct btree_trans trans;
-	unsigned i, nr, new_nr;
-	int ret;
-
-	bch2_trans_init(&trans, c, 0, 0);
-
-	for (i = 0; i < BTREE_ID_NR; i++) {
-		struct btree_iter iter;
-		struct btree *b;
-
-		bch2_trans_node_iter_init(&trans, &iter, i, POS_MIN,
-					  0, 0, BTREE_ITER_PREFETCH);
-retry:
-		bch2_trans_begin(&trans);
-
-		b = bch2_btree_iter_peek_node(&iter);
-
-		while (!(ret = PTR_ERR_OR_ZERO(b)) &&
-		       b &&
-		       !test_bit(BCH_FS_STOPPING, &c->flags))
-			b = bch2_btree_iter_next_node(&iter);
-
-		if (ret == -EINTR)
-			goto retry;
-
-		bch2_trans_iter_exit(&trans, &iter);
-	}
-
-	bch2_trans_exit(&trans);
-	if (ret)
-		return;
-
-	mutex_lock(&c->sb_lock);
-	bl = bch2_sb_get_journal_seq_blacklist(c->disk_sb.sb);
-	if (!bl)
-		goto out;
-
-	nr = blacklist_nr_entries(bl);
-	dst = bl->start;
-
-	t = c->journal_seq_blacklist_table;
-	BUG_ON(nr != t->nr);
-
-	for (src = bl->start, i = eytzinger0_first(t->nr);
-	     src < bl->start + nr;
-	     src++, i = eytzinger0_next(i, nr)) {
-		BUG_ON(t->entries[i].start	!= le64_to_cpu(src->start));
-		BUG_ON(t->entries[i].end	!= le64_to_cpu(src->end));
-
-		if (t->entries[i].dirty)
-			*dst++ = *src;
-	}
-
-	new_nr = dst - bl->start;
-
-	bch_info(c, "nr blacklist entries was %u, now %u", nr, new_nr);
-
-	if (new_nr != nr) {
-		bl = bch2_sb_resize_journal_seq_blacklist(&c->disk_sb,
-				new_nr ? sb_blacklist_u64s(new_nr) : 0);
-		BUG_ON(new_nr && !bl);
-
-		if (!new_nr)
-			c->disk_sb.sb->features[0] &= cpu_to_le64(~(1ULL << BCH_FEATURE_journal_seq_blacklist_v3));
-
-		bch2_write_super(c);
-	}
-out:
-	mutex_unlock(&c->sb_lock);
-}