Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches:

- qcow2: Decompression worker threads
- dmg: lzfse compression support
- file-posix: Simplify delegation to worker thread
- Don't pass flags to bdrv_reopen_queue()
- iotests: make 235 work on s390 (and others)

# gpg: Signature made Fri 14 Dec 2018 10:55:09 GMT
# gpg:                using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (42 commits)
  block/mirror: add missing coroutine_fn annotations
  iotests: make 235 work on s390 (and others)
  block: Assert that flags are up-to-date in bdrv_reopen_prepare()
  block: Remove assertions from update_flags_from_options()
  block: Stop passing flags to bdrv_reopen_queue_child()
  block: Remove flags parameter from bdrv_reopen_queue()
  block: Clean up reopen_backing_file() in block/replication.c
  qemu-io: Put flag changes in the options QDict in reopen_f()
  block: Drop bdrv_reopen()
  block: Use bdrv_reopen_set_read_only() in the mirror driver
  block: Use bdrv_reopen_set_read_only() in external_snapshot_commit()
  block: Use bdrv_reopen_set_read_only() in qmp_change_backing_file()
  block: Use bdrv_reopen_set_read_only() in stream_start/complete()
  block: Use bdrv_reopen_set_read_only() in bdrv_commit()
  block: Use bdrv_reopen_set_read_only() in commit_start/complete()
  block: Use bdrv_reopen_set_read_only() in bdrv_backing_update_filename()
  block: Add bdrv_reopen_set_read_only()
  file-posix: Avoid aio_worker() for QEMU_AIO_IOCTL
  file-posix: Switch to .bdrv_co_ioctl
  file-posix: Remove paio_submit_co()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 27 insertions, 2 deletions

diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 5363482..2c39124 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -10,6 +10,7 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
+#include "qapi/qmp/qdict.h"
 #include "qemu-io.h"
 #include "sysemu/block-backend.h"
 #include "block/block.h"
@@ -1978,6 +1979,7 @@ static int reopen_f(BlockBackend *blk, int argc, char **argv)
     int flags = bs->open_flags;
     bool writethrough = !blk_enable_write_cache(blk);
     bool has_rw_option = false;
+    bool has_cache_option = false;
 
     BlockReopenQueue *brq;
     Error *local_err = NULL;
@@ -1989,6 +1991,7 @@ static int reopen_f(BlockBackend *blk, int argc, char **argv)
                 error_report("Invalid cache option: %s", optarg);
                 return -EINVAL;
             }
+            has_cache_option = true;
             break;
         case 'o':
             if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
@@ -2046,11 +2049,33 @@ static int reopen_f(BlockBackend *blk, int argc, char **argv)
     }
 
     qopts = qemu_opts_find(&reopen_opts, NULL);
-    opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
+    opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new();
     qemu_opts_reset(&reopen_opts);
 
+    if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) {
+        if (has_rw_option) {
+            error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'");
+            qobject_unref(opts);
+            return -EINVAL;
+        }
+    } else {
+        qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR));
+    }
+
+    if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) ||
+        qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) {
+        if (has_cache_option) {
+            error_report("Cannot set both -c and the cache options");
+            qobject_unref(opts);
+            return -EINVAL;
+        }
+    } else {
+        qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE);
+        qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH);
+    }
+
     bdrv_subtree_drained_begin(bs);
-    brq = bdrv_reopen_queue(NULL, bs, opts, flags);
+    brq = bdrv_reopen_queue(NULL, bs, opts);
     bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err);
     bdrv_subtree_drained_end(bs);