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-rw-r--r--include/uapi/linux/nbd.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/nbd.h b/include/uapi/linux/nbd.h
index 155e33f81913..a50527ebf671 100644
--- a/include/uapi/linux/nbd.h
+++ b/include/uapi/linux/nbd.h
@@ -41,10 +41,14 @@ enum {
#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 */
+#define NBD_FLAG_SEND_FUA (1 << 3) /* send FUA (forced unit access) */
/* there is a gap here to match userspace */
#define NBD_FLAG_SEND_TRIM (1 << 5) /* send trim/discard */
#define NBD_FLAG_CAN_MULTI_CONN (1 << 8) /* Server supports multiple connections per export. */
+/* values for cmd flags in the upper 16 bits of request type */
+#define NBD_CMD_FLAG_FUA (1 << 16) /* FUA (forced unit access) op */
+
/* These are client behavior specific flags. */
#define NBD_CFLAG_DESTROY_ON_DISCONNECT (1 << 0) /* delete the nbd device on
disconnect. */