diff options
Diffstat (limited to 'block/nbd.c')
| -rw-r--r-- | block/nbd.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/block/nbd.c b/block/nbd.c index 14ab2259c2..6b22ae1d15 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -240,6 +240,17 @@ static int nbd_write(BlockDriverState *bs, int64_t sector_num, return 0; } +static coroutine_fn int nbd_co_read(BlockDriverState *bs, int64_t sector_num, + uint8_t *buf, int nb_sectors) +{ + int ret; + BDRVNBDState *s = bs->opaque; + qemu_co_mutex_lock(&s->lock); + ret = nbd_read(bs, sector_num, buf, nb_sectors); + qemu_co_mutex_unlock(&s->lock); + return ret; +} + static void nbd_close(BlockDriverState *bs) { BDRVNBDState *s = bs->opaque; @@ -260,7 +271,7 @@ static BlockDriver bdrv_nbd = { .format_name = "nbd", .instance_size = sizeof(BDRVNBDState), .bdrv_file_open = nbd_open, - .bdrv_read = nbd_read, + .bdrv_read = nbd_co_read, .bdrv_write = nbd_write, .bdrv_close = nbd_close, .bdrv_getlength = nbd_getlength, |