linux-kernel - Re: [PATCH] bitmap: Add bitmap_valloc(), bitmap_vzalloc() and bitmap

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Message-Id: <20181228154137.c161e699e2293a07458580d3@linux-foundation.org>
Date:   Fri, 28 Dec 2018 15:41:37 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Peng Wang <rocking@....edu.cn>
Cc:     andriy.shevchenko@...ux.intel.com, linux@...musvillemoes.dk,
        ynorov@...iumnetworks.com, arnd@...db.de, courbet@...gle.com,
        osandov@...com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bitmap: Add bitmap_valloc(), bitmap_vzalloc() and
 bitmap_vfree()

On Fri, 28 Dec 2018 00:18:29 +0800 Peng Wang <rocking@....edu.cn> wrote:

> Introduce bitmap alloc/free helpers when contiguous
> memory is not necessary.

That's a large bitmap you have there.  What code needs this?