From: Alan Somers <asomers@xxxxxxxxxxx>
Date: Wed, 13 Mar 2019 10:24:21 -0600
Subject: [PATCH 1/2] fuse: document fuse_fsync_in.fsync_flags
The FUSE_FSYNC_DATASYNC flag was introduced by commit b6aeadeda22a as a
magic number. No new values have been added to fsync_flags since.
Signed-off-by: Alan Somers <asomers@xxxxxxxxxxx>
---
fs/fuse/file.c | 2 +-
include/uapi/linux/fuse.h | 7 +++++++
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 06096b60f1df..db083359b56f 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -462,7 +462,7 @@ int fuse_fsync_common(struct file *file, loff_t
start, loff_t end,
memset(&inarg, 0, sizeof(inarg));
inarg.fh = ff->fh;
- inarg.fsync_flags = datasync ? 1 : 0;
+ inarg.fsync_flags = datasync ? FUSE_FSYNC_FDATASYNC: 0;
args.in.h.opcode = opcode;
args.in.h.nodeid = get_node_id(inode);
args.in.numargs = 1;
diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h
index 2ac598614a8f..e4ceeb406eb3 100644
--- a/include/uapi/linux/fuse.h
+++ b/include/uapi/linux/fuse.h
@@ -353,6 +353,13 @@ struct fuse_file_lock {
*/
#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
+/**
+ * Fsync flags
+ *
+ * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
+ */
+#define FUSE_FSYNC_FDATASYNC (1 << 0)
+
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2, /* no reply */
--
2.20.1
