修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/block/xen-blkfront.c
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..
@@ -792,7 +792,8 @@
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 		ring_req->u.rw.handle = info->handle;
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 		ring_req->operation = rq_data_dir(req) ?
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 			BLKIF_OP_WRITE : BLKIF_OP_READ;
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-		if (req_op(req) == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA) {
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+		if (req_op(req) == REQ_OP_FLUSH ||
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+		    (req_op(req) == REQ_OP_WRITE && (req->cmd_flags & REQ_FUA))) {
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 			/*
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 			 * Ideally we can do an unordered flush-to-disk.
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 			 * In case the backend onlysupports barriers, use that.