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From: Rohit Seth <rseth@unix-os.sc.intel.com>
To: Benjamin LaHaise <bcrl@redhat.com>, rohit.seth@intel.com
Cc: dada1 <dada1@cosmosbay.com>,
	Christoph Hellwig <hch@infradead.org>,
	Rik van Riel <riel@conectiva.com.br>,
	Andrew Morton <akpm@digeo.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [patch] remove hugetlb syscalls
Date: Thu, 14 Nov 2002 12:11:32 -0800	[thread overview]
Message-ID: <3DD40374.9050001@unix-os.sc.intel.com> (raw)
In-Reply-To: <20021114103147.A17468@redhat.com>

Benjamin LaHaise wrote:

>On Thu, Nov 14, 2002 at 04:13:56PM +0100, dada1 wrote:
>  
>
>>Thanks Christoph
>>
>>If I asked, this is because I tried the obvious and it doesnt work.
>>    
>>
>
>It's a file.  You need to use MAP_SHARED.
>  
>
This is not the problem with MAP_SHARED.  It is the lack of  (arch 
specific) hugepage aligned function support in the kernel. You can use 
the mmap on hugetlbfs using only MAP_FIXED with properly aligned 
addresses (but then this also is only a hint to kernel).  With addr == 
 NULL in mmap, the function is bound to fail almost all the times.


Thanks Ben for letting me know the problem with previous post.

>  
>



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  parent reply	other threads:[~2002-11-14 20:11 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-11-13 23:45 Benjamin LaHaise
2002-11-14  0:42 ` Rik van Riel
2002-11-14  8:52   ` dada1
2002-11-14 14:13     ` Christoph Hellwig
2002-11-14 15:13       ` dada1
2002-11-14 15:31         ` Benjamin LaHaise
2002-11-14 15:38           ` dada1
     [not found]           ` <3DD3FED2.2010901@unix-os.sc.intel.com>
2002-11-14 20:01             ` Benjamin LaHaise
2002-11-14 21:06             ` Benjamin LaHaise
2002-11-14 20:11           ` Rohit Seth [this message]
2002-11-14 20:36             ` William Lee Irwin III
2002-11-14 20:30 ` William Lee Irwin III
2002-11-14 20:48   ` Benjamin LaHaise
2002-11-14 21:02     ` William Lee Irwin III
2002-11-14 21:11       ` Benjamin LaHaise
2002-11-14 21:31         ` William Lee Irwin III
2002-11-14 21:40         ` Rohit Seth
2002-11-14 21:59           ` Benjamin LaHaise
2002-11-14 21:06   ` Benjamin LaHaise
2002-11-14 21:06   ` Benjamin LaHaise
2002-11-14 22:12 Seth, Rohit

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