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-rw-r--r--include/uapi/linux/nbd.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/linux/nbd.h b/include/uapi/linux/nbd.h
index 80ce0ef43afd..d75215f2c675 100644
--- a/include/uapi/linux/nbd.h
+++ b/include/uapi/linux/nbd.h
@@ -51,8 +51,9 @@ enum {
#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_ROTATIONAL (1 << 4) /* device is rotational */
#define NBD_FLAG_SEND_TRIM (1 << 5) /* send trim/discard */
+/* there is a gap here to match userspace */
#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 */