From bb1a4c0b7a3fbfe2e184a98ab0b046ae87141e58 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Tue, 18 May 2021 17:22:26 -0400
Subject: [PATCH] linux::io_uring: add fsync

Signed-off-by: Drew DeVault <sir@cmpwn.com>

---
 io_uring/sqe.ha | 14 ++++++++++++++

diff --git a/io_uring/sqe.ha b/io_uring/sqe.ha
index 97a14a7bec53c3ad87f58184725b3fabae7609ca..14492cd066fc6c06d092c45116a7ca174577a711 100644
--- a/io_uring/sqe.ha
+++ b/io_uring/sqe.ha
@@ -109,3 +109,17 @@ 	assert(count <= types::U32_MAX);
 	preprw(sqe, op::WRITE_FIXED, fd, buf, count: u32, 0, flags...);
 	sqe.buf_index = index;
 };
+
+// Prepares an fsync operation for an [[sqe]]. Note that operations are executed
+// in parallel and not are completed in submission order, so an fsync submitted
+// after a write may not cause the write to be accounted for by the fsync unless
+// [[sqe_flags::IO_LINK]] is used.
+export fn fsync(
+	sqe: *sqe,
+	fd: int,
+	fsync_flags: fsync_flags,
+	flags: sqe_flags...
+) void = {
+	preprw(sqe, op::FSYNC, fd, null, 0, 0, flags...);
+	sqe.fsync_flags = fsync_flags;
+};

-- 
2.48.1