linux-kernel - Re: [PATCH 2/3] make new alloc_pages

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

Date:	Wed, 27 Apr 2011 16:30:24 -0500
From:	Timur Tabi <timur@...escale.com>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
CC:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>, Mel Gorman <mel@....ul.ie>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Nazarewicz <mina86@...a86.com>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: [PATCH 2/3] make new alloc_pages_exact()

Dave Hansen wrote:
> 
> What I really wanted in the end was a highmem-capable
> alloc_pages_exact(), so here it is.  This function can be used to
> allocate unmapped (like highmem) non-power-of-two-sized areas of
> memory.  This is in constast to get_free_pages_exact() which can only
> allocate from lowmem.

Is there an easy way to verify that alloc_pages_exact(5MB) really does allocate
only 5MB and not 8MB?  Is there some kind of function that returns the amount of
unallocated memory, so I can do a diff?

-- 
Timur Tabi
Linux kernel developer at Freescale

--
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/