skin: add color bar and border to controller

[sdk/emulator/qemu.git] / block.c

diff --git a/block.c b/block.c
index 1f10457..a4d7be7 100644 (file)
--- a/block.c
+++ b/block.c
@@ -765,7 +765,7 @@ static void bdrv_inherited_options(int *child_flags, QDict *child_options,
     /* Our block drivers take care to send flushes and respect unmap policy,
      * so we can default to enable both on lower layers regardless of the
      * corresponding parent options. */
-    flags |= BDRV_O_UNMAP;
+    qdict_set_default_str(child_options, BDRV_OPT_DISCARD, "unmap");
 
     /* Clear flags that only apply to the top layer */
     flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ |
@@ -926,7 +926,7 @@ out:
     g_free(gen_node_name);
 }
 
-static QemuOptsList bdrv_runtime_opts = {
+QemuOptsList bdrv_runtime_opts = {
     .name = "bdrv_common",
     .head = QTAILQ_HEAD_INITIALIZER(bdrv_runtime_opts.head),
     .desc = {
@@ -960,6 +960,11 @@ static QemuOptsList bdrv_runtime_opts = {
             .type = QEMU_OPT_STRING,
             .help = "try to optimize zero writes (off, on, unmap)",
         },
+        {
+            .name = "discard",
+            .type = QEMU_OPT_STRING,
+            .help = "discard operation (ignore/off, unmap/on)",
+        },
         { /* end of list */ }
     },
 };
@@ -976,6 +981,7 @@ static int bdrv_open_common(BlockDriverState *bs, BdrvChild *file,
     const char *filename;
     const char *driver_name = NULL;
     const char *node_name = NULL;
+    const char *discard;
     const char *detect_zeroes;
     QemuOpts *opts;
     BlockDriver *drv;
@@ -1045,6 +1051,15 @@ static int bdrv_open_common(BlockDriverState *bs, BdrvChild *file,
         }
     }
 
+    discard = qemu_opt_get(opts, "discard");
+    if (discard != NULL) {
+        if (bdrv_parse_discard_flags(discard, &bs->open_flags) != 0) {
+            error_setg(errp, "Invalid discard option");
+            ret = -EINVAL;
+            goto fail_opts;
+        }
+    }
+
     detect_zeroes = qemu_opt_get(opts, "detect-zeroes");
     if (detect_zeroes) {
         BlockdevDetectZeroesOptions value =
@@ -1413,9 +1428,11 @@ void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd)
             backing_hd->drv ? backing_hd->drv->format_name : "");
 
     bdrv_op_block_all(backing_hd, bs->backing_blocker);
-    /* Otherwise we won't be able to commit due to check in bdrv_commit */
+    /* Otherwise we won't be able to commit or stream */
     bdrv_op_unblock(backing_hd, BLOCK_OP_TYPE_COMMIT_TARGET,
                     bs->backing_blocker);
+    bdrv_op_unblock(backing_hd, BLOCK_OP_TYPE_STREAM,
+                    bs->backing_blocker);
     /*
      * We do backup in 3 ways:
      * 1. drive backup
@@ -2067,7 +2084,7 @@ BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
  * to all devices.
  *
  */
-int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp)
+int bdrv_reopen_multiple(AioContext *ctx, BlockReopenQueue *bs_queue, Error **errp)
 {
     int ret = -1;
     BlockReopenQueueEntry *bs_entry, *next;
@@ -2075,7 +2092,9 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp)
 
     assert(bs_queue != NULL);
 
-    bdrv_drain_all();
+    aio_context_release(ctx);
+    bdrv_drain_all_begin();
+    aio_context_acquire(ctx);
 
     QSIMPLEQ_FOREACH(bs_entry, bs_queue, entry) {
         if (bdrv_reopen_prepare(&bs_entry->state, bs_queue, &local_err)) {
@@ -2105,6 +2124,9 @@ cleanup:
         g_free(bs_entry);
     }
     g_free(bs_queue);
+
+    bdrv_drain_all_end();
+
     return ret;
 }
 
@@ -2116,7 +2138,7 @@ int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp)
     Error *local_err = NULL;
     BlockReopenQueue *queue = bdrv_reopen_queue(NULL, bs, NULL, bdrv_flags);
 
-    ret = bdrv_reopen_multiple(queue, &local_err);
+    ret = bdrv_reopen_multiple(bdrv_get_aio_context(bs), queue, &local_err);
     if (local_err != NULL) {
         error_propagate(errp, local_err);
     }
@@ -2442,6 +2464,8 @@ static void bdrv_delete(BlockDriverState *bs)
 
     bdrv_close(bs);
 
+    bdrv_close(bs);
+
     /* remove from list, if necessary */
     if (bs->node_name[0] != '\0') {
         QTAILQ_REMOVE(&graph_bdrv_states, bs, node_list);
@@ -2774,7 +2798,7 @@ const char *bdrv_get_format_name(BlockDriverState *bs)
 
 static int qsort_strcmp(const void *a, const void *b)
 {
-    return strcmp(a, b);
+    return strcmp(*(char *const *)a, *(char *const *)b);
 }
 
 void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
@@ -2800,6 +2824,24 @@ void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
         }
     }
 
+    for (i = 0; i < (int)ARRAY_SIZE(block_driver_modules); i++) {
+        const char *format_name = block_driver_modules[i].format_name;
+
+        if (format_name) {
+            bool found = false;
+            int j = count;
+
+            while (formats && j && !found) {
+                found = !strcmp(formats[--j], format_name);
+            }
+
+            if (!found) {
+                formats = g_renew(const char *, formats, count + 1);
+                formats[count++] = format_name;
+            }
+        }
+    }
+
     qsort(formats, count, sizeof(formats[0]), qsort_strcmp);
 
     for (i = 0; i < count; i++) {
@@ -3345,17 +3387,10 @@ int bdrv_media_changed(BlockDriverState *bs)
 void bdrv_eject(BlockDriverState *bs, bool eject_flag)
 {
     BlockDriver *drv = bs->drv;
-    const char *device_name;
 
     if (drv && drv->bdrv_eject) {
         drv->bdrv_eject(bs, eject_flag);
     }
-
-    device_name = bdrv_get_device_name(bs);
-    if (device_name[0] != '\0') {
-        qapi_event_send_device_tray_moved(device_name,
-                                          eject_flag, &error_abort);
-    }
 }
 
 /**