I didn't know about this syscall until just now somehow, but it seems
reasonable to mention it in the fsync.

Signed-off-by: Tycho Andersen <tycho@tycho.pizza>
---
 man2/fsync.2 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/man2/fsync.2 b/man2/fsync.2
index 0f070ed2c..32238dc07 100644
--- a/man2/fsync.2
+++ b/man2/fsync.2

@@ -200,6 +200,7 @@ to guarantee safe operation.
 .BR pwritev (2),
 .BR sync (2),
 .BR sync_file_range (2),
+.BR syncfs (2),
 .BR fflush (3),
 .BR fileno (3),
 .BR hdparm (8),

base-commit: fbe71b1b79e72be3b9afc44b5d479e7fd84b598a
-- 
2.30.2