diff options
Diffstat (limited to 'hw/block/xen_disk.c')
| -rw-r--r-- | hw/block/xen_disk.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c index 7bd5bdefd3..d4ce380fee 100644 --- a/hw/block/xen_disk.c +++ b/hw/block/xen_disk.c @@ -29,6 +29,7 @@ #include "xen_blkif.h" #include "sysemu/blockdev.h" #include "sysemu/block-backend.h" +#include "qapi/error.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qstring.h" @@ -888,12 +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; @@ -917,7 +920,7 @@ static int blk_connect(struct XenDevice *xendev) /* setup via xenbus -> create new block driver instance */ xen_be_printf(&blkdev->xendev, 2, "create new bdrv (xenbus setup)\n"); - blkdev->blk = blk_new_open(blkdev->dev, blkdev->filename, NULL, options, + blkdev->blk = blk_new_open(blkdev->filename, NULL, options, qflags, &local_err); if (!blkdev->blk) { xen_be_printf(&blkdev->xendev, 0, "error: %s\n", @@ -925,6 +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"); |