From: Andi Kleen <andi@firstfloor.org>
To: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Andi Kleen <ak@linux.intel.com>,
Hillf Danton <dhillf@gmail.com>
Subject: Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v6
Date: Mon, 22 Oct 2012 15:27:33 +0200 [thread overview]
Message-ID: <20121022132733.GQ16230@one.firstfloor.org> (raw)
In-Reply-To: <CAHO5Pa0W-WGBaPvzdRJxYPdrg-K9guChswo3KJheK4BaRzsRwQ@mail.gmail.com>
> Maybe I am missing something obvious, but does this not conflict with
> include/uapi/asm-generic/mman-common.h:
>
> #ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED
> # define MAP_UNINITIALIZED 0x4000000
> ...
>
> 0x4000000 == (1 << 26
>
You're right. Someone added that since I wrote the patch originally.
I owned them when originally submitted @) Thanks for catching.
Have to move my bits two up, which will still work, but limit the
maximum page size slightly more, but will likely still work for most
people.
I'll send a new patch.
BTW seriously MAP_UNINITIALIZED? Who came up with that?
MAP_COMPLETELY_INSECURE or MAP_INSANE would have been more appropiate.
Maybe I should list as an advantage that my patch will prohibit
too many further such "innovations".
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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next prev parent reply other threads:[~2012-10-22 13:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-19 16:48 Andi Kleen
2012-10-20 3:39 ` Hillf Danton
2012-10-22 11:27 ` Michael Kerrisk
2012-10-22 13:27 ` Andi Kleen [this message]
2012-10-22 13:35 ` Andi Kleen
2012-10-22 13:56 ` Michael Kerrisk (man-pages)
2012-10-22 15:36 ` Andi Kleen
2012-10-22 15:53 ` Michael Kerrisk (man-pages)
2012-10-22 16:11 ` Andi Kleen
2012-10-22 16:23 ` Michael Kerrisk (man-pages)
2012-10-22 16:29 ` Andi Kleen
2012-10-22 16:42 ` Michael Kerrisk (man-pages)
2012-10-23 1:45 ` Benjamin Herrenschmidt
2012-10-23 1:44 ` Benjamin Herrenschmidt
2012-10-23 2:28 ` Andi Kleen
2012-10-23 7:37 ` Michael Kerrisk (man-pages)
2012-10-23 13:39 ` Andi Kleen
2012-10-23 22:56 ` Valdis.Kletnieks
2012-10-22 21:39 ` Andrew Morton
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