[PATCH 13/77] xen-9pfs: Fix log messages of reply errors

[Michael Roth]

From: Christian Schoenebeck <qemu_oss@crudebyte.com>

If delivery of some 9pfs response fails for some reason, log the
error message by mentioning the 9P protocol reply type, not by
client's request type. The latter could be misleading that the
error occurred already when handling the request input.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Message-Id: 
<ad0e5a9b6abde52502aa40b30661d29aebe1590a.1589132512.git.qemu_oss@crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
(cherry picked from commit 9bbb7e0fe081efff2e41f8517c256b72a284fe9b)
*prereq for cf45183b718
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/9pfs/xen-9p-backend.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 18fe5b7c92..f04caabfe5 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -137,7 +137,8 @@ static ssize_t xen_9pfs_pdu_vmarshal(V9fsPDU *pdu,
     ret = v9fs_iov_vmarshal(in_sg, num, offset, 0, fmt, ap);
     if (ret < 0) {
         xen_pv_printf(&xen_9pfs->xendev, 0,
-                      "Failed to encode VirtFS request type %d\n", pdu->id + 
1);
+                      "Failed to encode VirtFS reply type %d\n",
+                      pdu->id + 1);
         xen_be_set_state(&xen_9pfs->xendev, XenbusStateClosing);
         xen_9pfs_disconnect(&xen_9pfs->xendev);
     }
@@ -201,9 +202,9 @@ static void xen_9pfs_init_in_iov_from_pdu(V9fsPDU *pdu,
 
     buf_size = iov_size(ring->sg, num);
     if (buf_size  < P9_IOHDRSZ) {
-        xen_pv_printf(&xen_9pfs->xendev, 0, "Xen 9pfs request type %d"
-                "needs %zu bytes, buffer has %zu, less than minimum\n",
-                pdu->id, *size, buf_size);
+        xen_pv_printf(&xen_9pfs->xendev, 0, "Xen 9pfs reply type %d needs "
+                      "%zu bytes, buffer has %zu, less than minimum\n",
+                      pdu->id + 1, *size, buf_size);
         xen_be_set_state(&xen_9pfs->xendev, XenbusStateClosing);
         xen_9pfs_disconnect(&xen_9pfs->xendev);
     }
-- 
2.17.1