Re: strange loop!!

[jd <Javed.Dulloo@lifl.fr>]

you can read this : http://www.kernelnewbies.org/faq/index.php3#dowhile



Mandeep Singh Sandhu wrote:
> Hi all,
> i found this bit of code somewhere in the kernel.
> cud NE one explain why the do...while is required???
>
> do
> {
>   ....(some statements)
>   ....
>   ....
> } while(0);
>
> this will execute only once, so why the do....while at all???
>
> TIA
> mandeep
>
>
> -----Original Message-----
> From: Kiran Kumar [mailto:immidi_kiran@yahoo.com]
> Sent: Monday, January 19, 2004 3:30 PM
> To: kernelnewbies@nl.linux.org
> Subject: skbuff query
>
>
> Hi,
>   Can some one clarify why this code piece
> (alloc_skb() skbuff.c) has ++count < 5? Should it not
> be greater than, if it intends to tolerate the
> condition 5 times.
>
> if (in_interrupt() && (gfp_mask & __GFP_WAIT)) {
>       static int count = 0;
>       if (++count < 5) {
>       printk(KERN_ERR "alloc_skb called nonatomically
> "
>               "from interrupt %p\n",
> NET_CALLER(size));
>                 BUG();
>       }
>                 gfp_mask &= ~__GFP_WAIT;
> }
>
> =====
> Regards,
> Kiran Kumar Immidi
>
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