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From: "Hans-Jürgen Koch" <hjk@linutronix.de>
To: npiggin@suse.de
Cc: akpm@linux-foundation.org, greg@kroah.com, linux-kernel@vger.kernel.org
Subject: Re: [patch 04/18] uio: nopage
Date: Wed, 5 Dec 2007 11:04:08 +0100	[thread overview]
Message-ID: <20071205110408.3eab9340@dilbert.local> (raw)
In-Reply-To: <20071205071627.143603000@nick.local0.net>

Am Wed, 05 Dec 2007 18:15:51 +1100
schrieb npiggin@suse.de:

> Convert uio from nopage to fault.
> 
> Signed-off-by: Nick Piggin <npiggin@suse.de>
> Cc: greg@kroah.com

Hi Nick,
could you please add me to Cc: for UIO stuff:

Cc: hjk@linutronix.de

The patch itself looks alright to me, but I didn't test with a real
driver.

Acked-by: Hans J Koch <hjk@linutronix.de>

Thanks,
Hans


> Cc: linux-kernel@vger.kernel.org
> ---
>  drivers/uio/uio.c |   14 ++++++--------
>  1 file changed, 6 insertions(+), 8 deletions(-)
> 
> Index: linux-2.6/drivers/uio/uio.c
> ===================================================================
> --- linux-2.6.orig/drivers/uio/uio.c
> +++ linux-2.6/drivers/uio/uio.c
> @@ -412,30 +412,28 @@ static void uio_vma_close(struct vm_area
>  	idev->vma_count--;
>  }
>  
> -static struct page *uio_vma_nopage(struct vm_area_struct *vma,
> -				   unsigned long address, int *type)
> +static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault
> *vmf) {
>  	struct uio_device *idev = vma->vm_private_data;
> -	struct page* page = NOPAGE_SIGBUS;
> +	struct page *page;
>  
>  	int mi = uio_find_mem_index(vma);
>  	if (mi < 0)
> -		return page;
> +		return VM_FAULT_SIGBUS;
>  
>  	if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL)
>  		page = virt_to_page(idev->info->mem[mi].addr);
>  	else
>  		page =
> vmalloc_to_page((void*)idev->info->mem[mi].addr); get_page(page);
> -	if (type)
> -		*type = VM_FAULT_MINOR;
> -	return page;
> +	vmf->page = page;
> +	return 0;
>  }
>  
>  static struct vm_operations_struct uio_vm_ops = {
>  	.open = uio_vma_open,
>  	.close = uio_vma_close,
> -	.nopage = uio_vma_nopage,
> +	.fault = uio_vma_fault,
>  };
>  
>  static int uio_mmap_physical(struct vm_area_struct *vma)
> 

  reply	other threads:[~2007-12-05 10:04 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-05  7:15 [patch 00/18] remove nopage npiggin
2007-12-05  7:15 ` [patch 01/18] ia64: ia32 nopage npiggin
2007-12-05  7:15 ` [patch 02/18] relay: nopage npiggin
2007-12-05  7:15 ` [patch 03/18] drm: nopage npiggin
2007-12-05  9:05   ` Dave Airlie
2007-12-05  9:17     ` Nick Piggin
2007-12-05  7:15 ` [patch 04/18] uio: nopage npiggin
2007-12-05 10:04   ` Hans-Jürgen Koch [this message]
2007-12-05 10:10     ` Nick Piggin
2007-12-05 10:25       ` Hans-Jürgen Koch
2007-12-05 10:37         ` Nick Piggin
2007-12-05  7:15 ` [patch 05/18] kvm: nopage npiggin
2007-12-05 10:40   ` Avi Kivity
2007-12-05  7:15 ` [patch 06/18] ieee1394: nopage npiggin
2007-12-05 13:09   ` Stefan Richter
2007-12-05 13:15     ` Stefan Richter
2007-12-05 23:52       ` Nick Piggin
2007-12-05 23:51     ` Nick Piggin
2007-12-15 13:04       ` Stefan Richter
2007-12-15 13:01   ` Stefan Richter
2007-12-05  7:15 ` [patch 07/18] v4l: nopage npiggin
2007-12-08  0:31   ` Andrew Morton
2007-12-08  9:15     ` Ingo Molnar
2007-12-08 10:15       ` Andrew Morton
2007-12-09 17:10     ` Randy Dunlap
2007-12-10  5:06     ` [patch] x64/page.h: convert some macros to inlines Randy Dunlap
2007-12-10  8:34       ` Ingo Molnar
2007-12-05  7:15 ` [patch 08/18] fb: defio nopage npiggin
2007-12-05  7:15 ` [patch 09/18] agp: alpha nopage npiggin
2007-12-05  7:15 ` [patch 10/18] sg: nopage npiggin
2008-02-08  3:45   ` Douglas Gilbert
2007-12-05  7:15 ` [patch 11/18] ib: nopage npiggin
2007-12-05  7:15 ` [patch 12/18] usb: mon nopage npiggin
2007-12-05 16:39   ` Pete Zaitcev
2007-12-05 23:54     ` Nick Piggin
2007-12-05  7:16 ` [patch 13/18] alsa: nopage npiggin
2007-12-13 15:35   ` Takashi Iwai
2007-12-05  7:16 ` [patch 14/18] oss: via nopage npiggin
2007-12-05  7:16 ` [patch 15/18] alsa: usx2y nopage npiggin
2007-12-13 15:35   ` Takashi Iwai
2007-12-05  7:16 ` [patch 16/18] mm: special mapping nopage npiggin
2007-12-05  7:16 ` [patch 17/18] mm: remove nopage npiggin
2007-12-05 22:47   ` Andrew Morton
2007-12-05 23:23     ` Nick Piggin

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