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Re: [Qemu-devel] [PATCH v21 1/5] xbitmap: Introduce xbitmap
From: |
Matthew Wilcox |
Subject: |
Re: [Qemu-devel] [PATCH v21 1/5] xbitmap: Introduce xbitmap |
Date: |
Fri, 16 Feb 2018 10:30:32 -0800 |
User-agent: |
Mutt/1.9.2 (2017-12-15) |
On Fri, Feb 16, 2018 at 07:44:50PM +0200, Andy Shevchenko wrote:
> On Tue, Jan 9, 2018 at 1:10 PM, Wei Wang <address@hidden> wrote:
> > From: Matthew Wilcox <address@hidden>
> >
> > The eXtensible Bitmap is a sparse bitmap representation which is
> > efficient for set bits which tend to cluster. It supports up to
> > 'unsigned long' worth of bits.
>
> > lib/xbitmap.c | 444
> > +++++++++++++++++++++++++++++++
>
> Please, split tests to a separate module.
Hah, I just did this two days ago! I didn't publish it yet, but I also made
it compile both in userspace and as a kernel module.
It's the top two commits here:
http://git.infradead.org/users/willy/linux-dax.git/shortlog/refs/heads/xarray-2018-02-12
Note this is a complete rewrite compared to the version presented here; it
sits on top of the XArray and no longer has a preload interface. It has a
superset of the IDA functionality.