linux-kernel - Re: [Uclinux-dist-devel] Re: [PATCH] Blackfin arch: add some missing syscall

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Date:	Fri, 14 Sep 2007 13:45:18 +0800
From:	Bryan Wu <bryan.wu@...log.com>
To:	Bernd Schmidt <bernds_cb1@...nline.de>
Cc:	bryan.wu@...log.com, Mike Frysinger <vapier.adi@...il.com>,
	bernd.schmidt@...log.com, linux-arch@...r.kernel.org,
	Matthew Wilcox <matthew@....cx>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	uclinux-dist-devel@...ckfin.uclinux.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [Uclinux-dist-devel] Re: [PATCH] Blackfin arch: add some
	missing syscall

On Thu, 2007-09-13 at 13:03 +0200, Bernd Schmidt wrote:
> Bryan Wu wrote:
> >>> but mremap doesn't -- there's even an implementation in mm/nommu.c.
> >>> Could you check the rest of these over to see if they truly don't need
> >>> to be implemented for no-mmu?
> >> you're right we want mremap, my fault
> >>
> > 
> > Yes, I do think so, both sys_mremap and sys_munmap are implemented in
> > mm/nommu.c. How do think of this, Bernd?
> 
> There's a mremap in nommu.c, but it doesn't do a lot that is useful. 
> With some further mm changes in our tree, it's little more than a fancy 
> way of saying munmap, and uClibc does not use it, so there's no 
> compelling need to have it in userspace.
> 

Make sense. So currently Blackfin uClinux use the mremap/munmap in
uClibc?

Thanks
-Bryan
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