linux-kernel - Re: [PATCH, RESEND] tmpfs: fix mounts when size is less than the page size

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.64.0711041823460.14211@blonde.wat.veritas.com>
Date:	Sun, 4 Nov 2007 18:29:54 +0000 (GMT)
From:	Hugh Dickins <hugh@...itas.com>
To:	Michael Marineau <mike@...ineau.org>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, trivial@...nel.org
Subject: Re: [PATCH, RESEND] tmpfs: fix mounts when size is less than the
 page size

On Sun, 4 Nov 2007, Michael Marineau wrote:
> On 11/4/07, Hugh Dickins <hugh@...itas.com> wrote:
> > Fair enough, that does match the documentation of "size=0" better.
> > Though either way, someone who typos is going to get one kind of surprise
> > or another.  Do you mind if we do it slightly differently, achieving the
> > same effect without a special case, by rounding up instead of down?
> 
> Sounds reasonable to me. I didn't know about DIV_ROUND_UP :-)

I'm not familiar with it either (had to look it up to check it's
the right thing) - in mm/ we're accustomed to writing things like
"(size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT"; but that took
the line over 80 columns, and I dreaded someone somewhere mailing
in to ask "Why didn't you use DIV_ROUND_UP?" ;-)

Hugh
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/