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Date: Mon, 17 Aug 2009 11:08:53 +0300
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: akpm@linux-foundation.org, andi@firstfloor.org, rpjday@crashcourse.ca,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] VIDEO: console, use DIV_ROUND_UP
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On (08/17/09 10:00), Jiri Slaby wrote:
> On 08/17/2009 10:00 AM, Sergey Senozhatsky wrote:
> > So... In general, ((vc->vc_font.width + 7) >> 3) =3D=3D  DIV_ROUND_UP(v=
c->vc_font.width, 8) - 1;
>=20
> ?
>=20
Oops, silly me. Somehow I thought about
DIV_ROUND_UP((vc->vc_font.width + 7) , 8). My fault. Sorry.

> #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
>=20
> DIV_ROUND_UP(vc->vc_font.width, 8) expands to:
> (((vc->vc_font.width) + (8) - 1) / (8))
> which is pretty printed:
> (vc->vc_font.width + 7) / 8
> and that's equivalent to:
> (vc->vc_font.width + 7) >> 3
>=20
> Correct?
Right.

>=20
> > Are you sure we really can use DIV_ROUND_UP?
>=20
> Yeah, pretty sure.
>=20
OK.
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