[patch -v2 01/23] sunrpc: use simple_read_from_buffer

[patch -v2 01/23] sunrpc: use simple_read_from_buffer

[akinobu.mita]

[-- Attachment #1: sunrpc-simple-read-from-buffer.patch --]
[-- Type: text/plain, Size: 1020 bytes --]

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
---
 net/sunrpc/cache.c |   15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

Index: 2.6-git/net/sunrpc/cache.c
===================================================================
--- 2.6-git.orig/net/sunrpc/cache.c
+++ 2.6-git/net/sunrpc/cache.c
@@ -1271,20 +1271,11 @@ static ssize_t read_flush(struct file *f
 {
 	struct cache_detail *cd = PDE(file->f_path.dentry->d_inode)->data;
 	char tbuf[20];
-	unsigned long p = *ppos;
 	size_t len;
 
-	sprintf(tbuf, "%lu\n", cd->flush_time);
-	len = strlen(tbuf);
-	if (p >= len)
-		return 0;
-	len -= p;
-	if (len > count)
-		len = count;
-	if (copy_to_user(buf, (void*)(tbuf+p), len))
-		return -EFAULT;
-	*ppos += len;
-	return len;
+	len = sprintf(tbuf, "%lu\n", cd->flush_time);
+
+	return simple_read_from_buffer(buf, count, ppos, tbuf, len);
 }
 
 static ssize_t write_flush(struct file * file, const char __user * buf,

-- 

Re: [patch -v2 01/23] sunrpc: use simple_read_from_buffer

[Alexey Dobriyan]

On Mon, Jun 02, 2008 at 08:13:30AM +0900, akinobu.mita@gmail.com wrote:
> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: netdev@vger.kernel.org
> ---
>  net/sunrpc/cache.c |   15 +++------------
>  1 file changed, 3 insertions(+), 12 deletions(-)
> 
> Index: 2.6-git/net/sunrpc/cache.c
> ===================================================================
> --- 2.6-git.orig/net/sunrpc/cache.c
> +++ 2.6-git/net/sunrpc/cache.c
> @@ -1271,20 +1271,11 @@ static ssize_t read_flush(struct file *f
>  {
>  	struct cache_detail *cd = PDE(file->f_path.dentry->d_inode)->data;
>  	char tbuf[20];
> -	unsigned long p = *ppos;
>  	size_t len;
>  
> -	sprintf(tbuf, "%lu\n", cd->flush_time);
> -	len = strlen(tbuf);
> -	if (p >= len)
> -		return 0;
> -	len -= p;
> -	if (len > count)
> -		len = count;
> -	if (copy_to_user(buf, (void*)(tbuf+p), len))
> -		return -EFAULT;
> -	*ppos += len;
> -	return len;
> +	len = sprintf(tbuf, "%lu\n", cd->flush_time);
> +
> +	return simple_read_from_buffer(buf, count, ppos, tbuf, len);
>  }

Please, switch to seq_file:

	seq_printf(m, "%lu\n", cd->flush_time);
	return 0;

and that's everything module have to worry about.

Re: [patch -v2 01/23] sunrpc: use simple_read_from_buffer

[Akinobu Mita]

>> +     len = sprintf(tbuf, "%lu\n", cd->flush_time);
>> +
>> +     return simple_read_from_buffer(buf, count, ppos, tbuf, len);
>>  }
>
> Please, switch to seq_file:
>
>        seq_printf(m, "%lu\n", cd->flush_time);
>        return 0;
>
> and that's everything module have to worry about.
>

OK. I'll drop this patch from the patch series.
And I'll send this seq_file convertion in another chance.

[patch -v2 11/23] airo: use simple_read_from_buffer

[akinobu.mita-Re5JQEeQqe8AvxtiuMwx3w]

[-- Attachment #1: airo-use-simple-read-from-buffer.patch --]
[-- Type: text/plain, Size: 1434 bytes --]

Signed-off-by: Akinobu Mita <akinobu.mita-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: John W. Linville <linville-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
---
 drivers/net/wireless/airo.c |   15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

Index: 2.6-git/drivers/net/wireless/airo.c
===================================================================
--- 2.6-git.orig/drivers/net/wireless/airo.c
+++ 2.6-git/drivers/net/wireless/airo.c
@@ -4560,22 +4560,13 @@ static ssize_t proc_read( struct file *f
 			  size_t len,
 			  loff_t *offset )
 {
-	loff_t pos = *offset;
-	struct proc_data *priv = (struct proc_data*)file->private_data;
+	struct proc_data *priv = file->private_data;
 
 	if (!priv->rbuffer)
 		return -EINVAL;
 
-	if (pos < 0)
-		return -EINVAL;
-	if (pos >= priv->readlen)
-		return 0;
-	if (len > priv->readlen - pos)
-		len = priv->readlen - pos;
-	if (copy_to_user(buffer, priv->rbuffer + pos, len))
-		return -EFAULT;
-	*offset = pos + len;
-	return len;
+	return simple_read_from_buffer(buffer, len, offset, priv->rbuffer,
+					priv->readlen);
 }
 
 /*

-- 
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