[Qemu-devel] [PATCH v2 02/20] qemu-nbd: Call blk_set_enable_write_cache() explicitly

[Kevin Wolf <kwolf@redhat.com>]

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 qemu-nbd.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/qemu-nbd.c b/qemu-nbd.c
index f3528c8..b11bc41 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -507,6 +507,7 @@ int main(int argc, char **argv)
     const char *export_name = NULL;
     const char *tlscredsid = NULL;
     bool imageOpts = false;
+    bool writethrough = true;
 
     /* The client thread uses SIGTERM to interrupt the server.  A signal
      * handler ensures that "qemu-nbd -v -c" exits with a nice status code.
@@ -533,7 +534,7 @@ int main(int argc, char **argv)
                 exit(EXIT_FAILURE);
             }
             seen_cache = true;
-            if (bdrv_parse_cache_flags(optarg, &flags) == -1) {
+            if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) == -1) {
                 error_report("Invalid cache mode `%s'", optarg);
                 exit(EXIT_FAILURE);
             }
@@ -847,6 +848,8 @@ int main(int argc, char **argv)
     }
     bs = blk_bs(blk);
 
+    blk_set_enable_write_cache(blk, !writethrough);
+
     if (sn_opts) {
         ret = bdrv_snapshot_load_tmp(bs,
                                      qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID),
-- 
1.8.3.1