diff options
Diffstat (limited to 'block/parallels.c')
| -rw-r--r-- | block/parallels.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/block/parallels.c b/block/parallels.c index c64103ddbb..d30f0ecf77 100644 --- 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, }; |