Enable support for tmpfs quotas

To achieve so, add a new function quotactl_handle() to the quotaio subsystem,
this will call do_quotactl() with or without a valid quotadev, according to the
filesystem type.

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
9 files changed