Re: [RFC PATCH 1/5] mm: intorduce __GFP_UNMAPPED and unmapped_alloc()

[Kent Overstreet]

On Thu, May 18, 2023 at 10:15:59AM -0700, Song Liu wrote:
> On Thu, May 18, 2023 at 9:58 AM Kent Overstreet
> <kent.overstreet@xxxxxxxxx> wrote:
> >
> > On Thu, May 18, 2023 at 09:33:20AM -0700, Song Liu wrote:
> > > I am working on patches based on the discussion in [1]. I am planning to
> > > send v1 for review in a week or so.
> >
> > For reference, here's my own (early, but functioning :) slab allocator:
> >
> > Look forward to comparing!
> 
> This looks similar to the bpf_prog_pack allocator we use for BPF at the
> moment. (search for bpf_prog_pack in kernel/bpf/core.c). I guess we
> can also use bpf_prog_pack for bcachefs for now.

The code in bpf/core.c does a _lot_, my preference would be to split
that up and refactor the bpf code to use something generic :)