mirror of https://github.com/xemu-project/xemu.git
xen_disk: Always set feature-barrier = 1
The synchronous .bdrv_flush callback doesn't exist any more and a device really shouldn't poke into the block layer internals anyway. All drivers are supposed to have a correctly working bdrv_flush, so let's just hard-code this. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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@ -620,7 +620,7 @@ static void blk_alloc(struct XenDevice *xendev)
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static int blk_init(struct XenDevice *xendev)
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{
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struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
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int index, qflags, have_barriers, info = 0;
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int index, qflags, info = 0;
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/* read xenstore entries */
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if (blkdev->params == NULL) {
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@ -706,7 +706,6 @@ static int blk_init(struct XenDevice *xendev)
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blkdev->bs->drv ? blkdev->bs->drv->format_name : "-");
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blkdev->file_size = 0;
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}
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have_barriers = blkdev->bs->drv && blkdev->bs->drv->bdrv_flush ? 1 : 0;
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xen_be_printf(xendev, 1, "type \"%s\", fileproto \"%s\", filename \"%s\","
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" size %" PRId64 " (%" PRId64 " MB)\n",
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@ -714,7 +713,7 @@ static int blk_init(struct XenDevice *xendev)
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blkdev->file_size, blkdev->file_size >> 20);
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/* fill info */
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xenstore_write_be_int(&blkdev->xendev, "feature-barrier", have_barriers);
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xenstore_write_be_int(&blkdev->xendev, "feature-barrier", 1);
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xenstore_write_be_int(&blkdev->xendev, "info", info);
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xenstore_write_be_int(&blkdev->xendev, "sector-size", blkdev->file_blk);
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xenstore_write_be_int(&blkdev->xendev, "sectors",
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