From b2b9201fa34e07b1a29a2951f5bcefc741c32dc2 Mon Sep 17 00:00:00 2001
From: bobijam <bobijam>
Date: Wed, 12 Dec 2007 02:00:15 +0000
Subject: [PATCH] Branch HEAD b=12646 i=johann, shadow
Add opc parameter to ost_checksum_bulk().
---
lustre/ost/ost_handler.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/lustre/ost/ost_handler.c b/lustre/ost/ost_handler.c
index 733c8b98f3..8008711a2d 100644
--- a/lustre/ost/ost_handler.c
+++ b/lustre/ost/ost_handler.c
@@ -467,7 +467,7 @@ static int get_per_page_niobufs(struct obd_ioobj *ioo, int nioo,
return npages;
}
-static __u32 ost_checksum_bulk(struct ptlrpc_bulk_desc *desc)
+static __u32 ost_checksum_bulk(struct ptlrpc_bulk_desc *desc, int opc)
{
__u32 cksum = ~0;
int i;
@@ -480,13 +480,14 @@ static __u32 ost_checksum_bulk(struct ptlrpc_bulk_desc *desc)
/* corrupt the data before we compute the checksum, to
* simulate a client->OST data error */
- if (i == 0 &&
+ if (i == 0 && opc == OST_WRITE &&
OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_CHECKSUM_RECEIVE))
memcpy(ptr, "bad3", min(4, len));
cksum = crc32_le(cksum, ptr, len);
/* corrupt the data after we compute the checksum, to
* simulate an OST->client data error */
- if (i == 0 && OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_CHECKSUM_SEND))
+ if (i == 0 && opc == OST_READ &&
+ OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_CHECKSUM_SEND))
memcpy(ptr, "bad4", min(4, len));
kunmap(page);
}
@@ -807,7 +808,7 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
}
if (unlikely(body->oa.o_valid & OBD_MD_FLCKSUM)) {
- body->oa.o_cksum = ost_checksum_bulk(desc);
+ body->oa.o_cksum = ost_checksum_bulk(desc, OST_READ);
body->oa.o_valid = OBD_MD_FLCKSUM;
CDEBUG(D_PAGE,"checksum at read origin: %x\n",body->oa.o_cksum);
} else {
@@ -1122,7 +1123,7 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
if (unlikely(client_cksum != 0 && rc == 0)) {
static int cksum_counter;
- server_cksum = ost_checksum_bulk(desc);
+ server_cksum = ost_checksum_bulk(desc, OST_WRITE);
repbody->oa.o_valid |= OBD_MD_FLCKSUM;
repbody->oa.o_cksum = server_cksum;
cksum_counter++;
@@ -1142,7 +1143,7 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
objcount, ioo, npages, local_nb, oti, rc);
if (unlikely(client_cksum != server_cksum && rc == 0)) {
- int new_cksum = ost_checksum_bulk(desc);
+ int new_cksum = ost_checksum_bulk(desc, OST_WRITE);
char *msg;
char *via;
char *router;
--
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