From 1c95f6f795c2a9c1c36ffff7911e23835bc45a21 Mon Sep 17 00:00:00 2001
From: zab <zab>
Date: Wed, 22 Oct 2003 22:04:01 +0000
Subject: [PATCH] b=2010 The OSC was accidentally stuffing too much bulk data
 in RPCs when running with 8k pages.  This trivially re-uses the math the OSC
 was already doing to fix the new RPC building mechanism.

---
 lustre/osc/osc_internal.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lustre/osc/osc_internal.h b/lustre/osc/osc_internal.h
index ccc4b34..7a011d3 100644
--- a/lustre/osc/osc_internal.h
+++ b/lustre/osc/osc_internal.h
@@ -10,6 +10,10 @@
 #ifndef OSC_INTERNAL_H
 #define OSC_INTERNAL_H
 
+/* bug 1578: negotiate BRW_MAX_SIZE with the OST, instead of hard-coding it */
+#define OSC_BRW_MAX_SIZE PTL_MTU
+#define OSC_BRW_MAX_IOV min_t(int, PTL_MD_MAX_IOV, OSC_BRW_MAX_SIZE/PAGE_SIZE)
+
 #define OAP_MAGIC 8675309
 
 struct osc_async_page {
-- 
1.8.3.1