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mm/page_owner.c: use late_initcall to hook in enabling
This was using module_init, but there is no way this code can
be modular. In the non-modular case, a module_init becomes a
device_initcall, but this really isn't a device. So we should
choose a more appropriate initcall bucket to put it in.
In order of execution, our close choices are:
fs_initcall(fn)
rootfs_initcall(fn)
device_initcall(fn)
late_initcall(fn)
..and since the initcall here goes after debugfs, we really
should be post-rootfs, which means late_initcall makes the
most sense here.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>