From 8ae4235f9454564dbb9f31cc827fccda5049e865 Mon Sep 17 00:00:00 2001
From: Willy Tarreau <w@1wt.eu>
Date: Wed, 5 Dec 2018 09:47:34 +0100
Subject: [PATCH] MINOR: htx: make htx_from_buf() adjust the size only on new
 buffers

This one is used a lot during transfers, let's avoid resetting its
size when there are already data in the buffer since it implies the
size is correct.
---
 include/proto/htx.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/proto/htx.h b/include/proto/htx.h
index e59bb4f48..b6f1042f4 100644
--- a/include/proto/htx.h
+++ b/include/proto/htx.h
@@ -532,9 +532,10 @@ static inline struct htx *htx_from_buf(struct buffer *buf)
         if (b_is_null(buf))
                 return &htx_empty;
         htx = (struct htx *)(buf->area);
-        htx->size = buf->size - sizeof(*htx);
-        if (!b_data(buf))
+        if (!b_data(buf)) {
+		htx->size = buf->size - sizeof(*htx);
                 htx_reset(htx);
+	}
 	return htx;
 }