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-rw-r--r--include/uapi/linux/io_uring.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index f1a118b01d18..2a1569211d87 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -155,6 +155,7 @@ struct io_uring_params {
* io_uring_params->features flags
*/
#define IORING_FEAT_SINGLE_MMAP (1U << 0)
+#define IORING_FEAT_NODROP (1U << 1)
/*
* io_uring_register(2) opcodes and arguments