kernfs: Add noop_fsync to supported kernfs_file_fops

If you edit a kernfs backed file with vi(1), you see an ugly error
message when you write the file because vi tries to fsync(2) the
file after writing, which fails.

We have noop_fsync() for this, use it.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 2bcb86e..78219d5 100644 (file)
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -911,6 +911,7 @@ const struct file_operations kernfs_file_fops = {
        .open           = kernfs_fop_open,
        .release        = kernfs_fop_release,
        .poll           = kernfs_fop_poll,
+       .fsync          = noop_fsync,
 };
 
 /**