[PATCH 2/2] import: fix space calculation when reusing epochs

[Eric Wong <e@80x24.org>]

Dividing the result of $git->packed_bytes by $PACKING_FACTOR
_twice_ was completely wrong for v2.  Just calculate
$unpacked_bytes once and use it for the Import->{bytes_added}
field.  The calculation for lei/store was actually correct,
just redundant since repeated division is unnecessary.
---
 lib/PublicInbox/LeiStore.pm   | 5 ++---
 lib/PublicInbox/V2Writable.pm | 9 ++++-----
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/lib/PublicInbox/LeiStore.pm b/lib/PublicInbox/LeiStore.pm
index 28eb5710..5b2c5587 100644
--- a/lib/PublicInbox/LeiStore.pm
+++ b/lib/PublicInbox/LeiStore.pm
@@ -94,15 +94,14 @@ sub importer {
 		$self->done; # unlock
 		# re-acquire lock, update alternates for new epoch
 		(undef, $tl) = eidx_init($self);
-		my $packed_bytes = $git->packed_bytes;
-		my $unpacked_bytes = $packed_bytes / $self->packing_factor;
+		my $unpacked_bytes = int($git->packed_bytes / $self->packing_factor);
 		if ($unpacked_bytes >= $self->rotate_bytes) {
 			$max++;
 			next;
 		}
 		my ($n, $e) = git_ident($git);
 		$self->{im} = $im = PublicInbox::Import->new($git, $n, $e);
-		$im->{bytes_added} = int($packed_bytes / $self->packing_factor);
+		$im->{bytes_added} = $unpacked_bytes;
 		$im->{lock_path} = undef;
 		$im->{path_type} = 'v2';
 		return $im;
diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index 194524b7..61c41b60 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -634,12 +634,11 @@ sub importer {
 	if (defined $epoch) { # use existing if not too big
 		my $git = PublicInbox::Git->new(
 			$self->{mg}->epoch_dir."/$epoch.git");
-		my $packed_bytes = $git->packed_bytes;
-		my $unpacked_bytes = $packed_bytes / $PACKING_FACTOR;
+		my $unpacked_bytes = int($git->packed_bytes / $PACKING_FACTOR);
 
 		if ($unpacked_bytes < $self->{rotate_bytes}) { # ok, space left
 			$self->{epoch_max} = $epoch;
-			return $self->import_init($git, $packed_bytes);
+			return $self->import_init($git, $unpacked_bytes);
 		}
 		++$epoch; # too big, start a new epoch on fall through
 	}
@@ -649,9 +648,9 @@ sub importer {
 }
 
 sub import_init {
-	my ($self, $git, $packed_bytes, $tmp) = @_;
+	my ($self, $git, $unpacked_bytes, $tmp) = @_;
 	my $im = PublicInbox::Import->new($git, undef, undef, $self->{ibx});
-	$im->{bytes_added} = int($packed_bytes / $PACKING_FACTOR);
+	$im->{bytes_added} = $unpacked_bytes;
 	$im->{lock_path} = undef;
 	$im->{path_type} = 'v2';
 	$self->{im} = $im unless $tmp;