fuse: verify write return

Make sure filesystem is not returning a bogus number of bytes written.

Fixes: ea9b9907b8 ("fuse: implement perform_write")
Cc: <stable@vger.kernel.org> # v2.6.26
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2019-11-12 11:49:04 +01:00
commit 8aab336b14