From: "Darrick J. Wong" <djwong@kernel.org>
Subject: fuse2fs: disable renameat2

Apparently fuse munged rename and renameat2 together into the same
upcall, so we actually have to filter out nonzero flags because
otherwise we do a regular rename for a RENAME_EXCHANGE/WHITEOUT, which
is not what the user asked for.

Origin: upstream, https://github.com/tytso/e2fsprogs/commit/b431abbc8fe0fd1de4e414aae3520c4c19411048
---
 misc/fuse2fs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index d123eebb1..36e1173e2 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -1405,6 +1405,12 @@ static int op_rename(const char *from, const char *to
 	struct update_dotdot ud;
 	int ret = 0;
 
+#if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
+	/* renameat2 is not supported */
+	if (flags)
+		return -ENOSYS;
+#endif
+
 	FUSE2FS_CHECK_CONTEXT(ff);
 	fs = ff->fs;
 	dbg_printf("%s: renaming %s to %s\n", __func__, from, to);
-- 
2.47.2