diff options
| -rw-r--r-- | nbd/common.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/nbd/common.c b/nbd/common.c index dccbb8e9de..4db45b3ede 100644 --- a/nbd/common.c +++ b/nbd/common.c @@ -20,6 +20,10 @@ #include "qapi/error.h" #include "nbd-internal.h" +/* nbd_wr_syncv + * The function may be called from coroutine or from non-coroutine context. + * When called from non-coroutine context @ioc must be in blocking mode. + */ ssize_t nbd_wr_syncv(QIOChannel *ioc, struct iovec *iov, size_t niov, @@ -42,11 +46,8 @@ ssize_t nbd_wr_syncv(QIOChannel *ioc, len = qio_channel_writev(ioc, local_iov, nlocal_iov, &local_err); } if (len == QIO_CHANNEL_ERR_BLOCK) { - if (qemu_in_coroutine()) { - qio_channel_yield(ioc, do_read ? G_IO_IN : G_IO_OUT); - } else { - return -EAGAIN; - } + assert(qemu_in_coroutine()); + qio_channel_yield(ioc, do_read ? G_IO_IN : G_IO_OUT); continue; } if (len < 0) { |