stream: fix ratelimit_set_speed

[qemu.git] / block / parallels.c

diff --git a/block/parallels.c b/block/parallels.c
index c64103ddbb1f9d78096d054ffe3dba27ca4f928a..d30f0ecf7775346e0b8f330a7f9f1cd13fd71f64 100644 (file)
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -46,6 +46,7 @@ struct parallels_header {
 } QEMU_PACKED;
 
 typedef struct BDRVParallelsState {
+    CoMutex lock;
 
     uint32_t *catalog_bitmap;
     int catalog_size;
@@ -95,6 +96,7 @@ static int parallels_open(BlockDriverState *bs, int flags)
     for (i = 0; i < s->catalog_size; i++)
        le32_to_cpus(&s->catalog_bitmap[i]);
 
+    qemu_co_mutex_init(&s->lock);
     return 0;
 fail:
     if (s->catalog_bitmap)
@@ -134,6 +136,17 @@ static int parallels_read(BlockDriverState *bs, int64_t sector_num,
     return 0;
 }
 
+static coroutine_fn int parallels_co_read(BlockDriverState *bs, int64_t sector_num,
+                                          uint8_t *buf, int nb_sectors)
+{
+    int ret;
+    BDRVParallelsState *s = bs->opaque;
+    qemu_co_mutex_lock(&s->lock);
+    ret = parallels_read(bs, sector_num, buf, nb_sectors);
+    qemu_co_mutex_unlock(&s->lock);
+    return ret;
+}
+
 static void parallels_close(BlockDriverState *bs)
 {
     BDRVParallelsState *s = bs->opaque;
@@ -145,7 +158,7 @@ static BlockDriver bdrv_parallels = {
     .instance_size     = sizeof(BDRVParallelsState),
     .bdrv_probe                = parallels_probe,
     .bdrv_open         = parallels_open,
-    .bdrv_read         = parallels_read,
+    .bdrv_read          = parallels_co_read,
     .bdrv_close                = parallels_close,
 };