I don't know about this specific loop you are talking about, but this kind
of loops is usualy used to create a block. Inside this block you can
define variables whose scope is this block.
H.
On Mon, 19 Jan 2004, 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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