[Virtio-fs] [PATCH] fuse: make written data persistent after writing

[Liu Bo]

If this is a DSYNC write, make sure we push it to stable storage now
that we've written data.

Signed-off-by: Liu Bo <bo.liu at linux.alibaba.com>
---
This patch is based on 5.5-rc5.

 fs/fuse/file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a63d779eac10..08e3df618d7f 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1541,6 +1541,8 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from)
 	if (res > 0)
 		fuse_write_update_size(inode, iocb->ki_pos);
 	inode_unlock(inode);
+	if (res > 0)
+		res = generic_write_sync(iocb, res);
 
 	return res;
 }
-- 
1.8.3.1