From: Andre Noll <maan@systemlinux.org>
Date: Thu, 14 Jan 2010 21:58:54 +0000 (+0100)
Subject: [btr] Fix btr_get_input_queue_size().
X-Git-Tag: v0.4.2~100
X-Git-Url: http://git.tue.mpg.de/?a=commitdiff_plain;h=5a38ee4a131d881d97c189616a63cf0a12272756;p=paraslash.git

[btr] Fix btr_get_input_queue_size().

We must take care of wrap buffers when computing the input queue size.
---

diff --git a/buffer_tree.c b/buffer_tree.c
index e023bb14..57f1398e 100644
--- a/buffer_tree.c
+++ b/buffer_tree.c
@@ -491,12 +491,17 @@ void btr_remove_node(struct btr_node *btrn)
 size_t btr_get_input_queue_size(struct btr_node *btrn)
 {
 	struct btr_buffer_reference *br;
-	size_t size = 0;
+	size_t size = 0, wrap_consumed = 0;
 
 	FOR_EACH_BUFFER_REF(br, btrn) {
-		//PARA_CRIT_LOG("size: %zu\n", size);
+		if (br->wrap_count != 0) {
+			wrap_consumed = br->consumed;
+			continue;
+		}
 		size += br_available_bytes(br);
 	}
+	assert(wrap_consumed <= size);
+	size -= wrap_consumed;
 	return size;
 }