diff options
| -rw-r--r-- | block/nbd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/block/nbd.c b/block/nbd.c index c4c91a1586..813c40d8f0 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -1044,6 +1044,10 @@ static int nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, if (!(flags & BDRV_REQ_MAY_UNMAP)) { request.flags |= NBD_CMD_FLAG_NO_HOLE; } + if (flags & BDRV_REQ_NO_FALLBACK) { + assert(s->info.flags & NBD_FLAG_SEND_FAST_ZERO); + request.flags |= NBD_CMD_FLAG_FAST_ZERO; + } if (!bytes) { return 0; @@ -1239,6 +1243,9 @@ static int nbd_client_connect(BlockDriverState *bs, Error **errp) } if (s->info.flags & NBD_FLAG_SEND_WRITE_ZEROES) { bs->supported_zero_flags |= BDRV_REQ_MAY_UNMAP; + if (s->info.flags & NBD_FLAG_SEND_FAST_ZERO) { + bs->supported_zero_flags |= BDRV_REQ_NO_FALLBACK; + } } s->sioc = sioc; |