fuse: add file_modified() to fallocate

stable inclusion
from stable-v5.10.154
commit f8e8cda869fd0a023e22c1fa98906d1a61bd152a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I64YCB

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f8e8cda869fd0a023e22c1fa98906d1a61bd152a



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commit 4a6f278d upstream.

Add missing file_modified() call to fuse_file_fallocate().  Without this
fallocate on fuse failed to clear privileges.

Fixes: 05ba1f08 ("fuse: add FALLOCATE operation")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Lipeng Sang <sanglipeng1@jd.com>