Messages in this thread | | | From | Andy Shevchenko <> | Date | Thu, 21 Jun 2018 05:13:39 +0300 | Subject | Re: [PATCH v3 3/5] bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free() |
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On Tue, Jun 19, 2018 at 2:10 AM, Andrew Morton <akpm@linux-foundation.org> wrote: > On Mon, 18 Jun 2018 15:01:43 -0700 Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:
>> We can't as we end up including bitmap.h (by the way of cpumask.h) >> form slab.h, so we gen circular dependency. >
It's not just so easy. See below.
> That info should have been in the changelog, and probably a code > comment. > >> Maybe if we removed memcg >> stuff from slab.h so we do not need to include workqueue.h... > > Or move the basic slab API stuff out of slab.h into a new header. Or > create a new, standalone work_struct.h - that looks pretty simple.
I tried to move out work_struct, it didn't help. There are actually several circular dependencies that ends in bitmap.h either way or another.
First one is
slab.h -> gfp.h -> mmzone.h -> nodemask.h -> bitmap.h
And so on...
Splitting out kXalloc stuff to a separate header won't help, I think, because of the above. Splitting out struct work_struct is just a tip of an iceberg. Splitting out memcg stuff won't help in the similar way.
I'm all ears for (a better) solution.
-- With Best Regards, Andy Shevchenko
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