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bcachefs: Fix bch2_verify_bucket_evacuated()

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We were going into an infinite loop when printing out backpointers, due
to never incrementing bp_offset - whoops.

Also limit the number of backpointers we print to 10; this is debug code
and we only need to print a sample, not all of them.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2023-03-27 16:25:15 -04:00
parent d59ca7e8c0
commit ffc76edbbe
1 changed files with 5 additions and 0 deletions
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5
fs/bcachefs/move.c
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@@ -627,6 +627,7 @@ void bch2_verify_bucket_evacuated(struct btree_trans *trans, struct bpos bucket,
struct printbuf buf = PRINTBUF;
struct bch_backpointer bp;
u64 bp_offset = 0;
unsigned nr_bps = 0;
int ret;
bch2_trans_begin(trans);
@@ -688,6 +689,10 @@ void bch2_verify_bucket_evacuated(struct btree_trans *trans, struct bpos bucket,
prt_newline(&buf);
bch2_bkey_val_to_text(&buf, c, k);
bch2_trans_iter_exit(trans, &iter);
if (++nr_bps > 10)
break;
bp_offset++;
}
bch2_print_string_as_lines(KERN_ERR, buf.buf);