diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/block/xen_disk.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c index e619a1f7d9..d4ce380fee 100644 --- a/hw/block/xen_disk.c +++ b/hw/block/xen_disk.c @@ -889,12 +889,14 @@ static int blk_connect(struct XenDevice *xendev) struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev); int pers, index, qflags; bool readonly = true; + bool writethrough = true; /* read-only ? */ if (blkdev->directiosafe) { qflags = BDRV_O_NOCACHE | BDRV_O_NATIVE_AIO; } else { - qflags = BDRV_O_CACHE_WB; + qflags = 0; + writethrough = false; } if (strcmp(blkdev->mode, "w") == 0) { qflags |= BDRV_O_RDWR; @@ -926,6 +928,7 @@ static int blk_connect(struct XenDevice *xendev) error_free(local_err); return -1; } + blk_set_enable_write_cache(blkdev->blk, !writethrough); } else { /* setup via qemu cmdline -> already setup for us */ xen_be_printf(&blkdev->xendev, 2, "get configured bdrv (cmdline setup)\n"); |