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[karo-tx-linux.git] / include / uapi / linux / nbd.h

diff --git a/include/uapi/linux/nbd.h b/include/uapi/linux/nbd.h
index dfb514472cbc49d64712112c1cd3d042c56cfb0f..4f52549b23ff8765e0c5cfcf599190eca897de87 100644 (file)
--- a/include/uapi/linux/nbd.h
+++ b/include/uapi/linux/nbd.h
@@ -33,13 +33,14 @@ enum {
        NBD_CMD_READ = 0,
        NBD_CMD_WRITE = 1,
        NBD_CMD_DISC = 2,
-       /* there is a gap here to match userspace */
+       NBD_CMD_FLUSH = 3,
        NBD_CMD_TRIM = 4
 };
 
 /* values for flags field */
 #define NBD_FLAG_HAS_FLAGS    (1 << 0) /* nbd-server supports flags */
 #define NBD_FLAG_READ_ONLY    (1 << 1) /* device is read-only */
+#define NBD_FLAG_SEND_FLUSH   (1 << 2) /* can flush writeback cache */
 /* there is a gap here to match userspace */
 #define NBD_FLAG_SEND_TRIM    (1 << 5) /* send trim/discard */