19 lines
818 B
Diff
19 lines
818 B
Diff
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Index: xen-4.2.0-testing/tools/qemu-xen-traditional-dir-remote/hw/xen_blktap.c
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===================================================================
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--- xen-4.2.0-testing.orig/tools/qemu-xen-traditional-dir-remote/hw/xen_blktap.c
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+++ xen-4.2.0-testing/tools/qemu-xen-traditional-dir-remote/hw/xen_blktap.c
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@@ -247,8 +247,11 @@ static int open_disk(struct td_state *s,
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drv = blktap_drivers[i].drv;
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DPRINTF("%s driver specified\n", drv ? drv->format_name : "No");
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- /* Open the image */
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- if (bdrv_open2(bs, path, flags, drv) != 0) {
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+ /* Open the image
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+ * Use BDRV_O_CACHE_WB for write-through caching,
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+ * no flags for write-back caching
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+ */
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+ if (bdrv_open2(bs, path, flags|BDRV_O_CACHE_WB, drv) != 0) {
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fprintf(stderr, "Could not open image file %s\n", path);
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return -ENOMEM;
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}
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