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From: "dada1" <dada1@cosmosbay.com>
To: "Linus Torvalds" <torvalds@transmeta.com>,
	"Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Fw: Linux v2.5.54
Date: Fri, 3 Jan 2003 09:40:26 +0100	[thread overview]
Message-ID: <00fe01c2b303$c3e67790$760010ac@edumazet> (raw)

>   o remove hugetlb syscalls

So finally they did it ...

But mmap(NULL, ...) is not yet supported, this is really sad.

And arch/i386/Kconfig and Documentation/vm/hugetlbpage.txt still document
the sys_alloc_hugepages()/sys_free_hugepages() syscalls.

A simple program that doesnt know at all how the memory is layed out by
kernel/glibc can not easily get some 4Mo pages in a single syscall.
sys_alloc_hugepage() was very convenient for that.

Another problem :

if you mount hugetlbfs in /huge, then create a file /huge/BIG of size 4Mo,
then use :

dd if=/huge/BIG of=/dev/null

the dd process hangs on 'D' state : the read() syscall just hang forever.

Thanks


             reply	other threads:[~2003-01-03  8:32 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-03  8:40 dada1 [this message]
2003-01-03  9:26 ` Fw: Linux v2.5.54 Andrew Morton
2003-01-03  9:55   ` William Lee Irwin III

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