RE: skbuff truesize incorrect.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Jim Baxter
> On 22/05/14 21:58, David Miller wrote:
> > From: Jim Baxter <jim_baxter@xxxxxxxxxx>
> > Date: Thu, 22 May 2014 21:21:55 +0100
> >
> >> If there are multiple clones for an skb all pointing at the same data,
> >> will that distort the memory used when they all have the same truesize?
> >
> > What is distorted about it?
> >
> > Each clone references exactly that much backing memory.
> >
> 
> Thank you for you help, I think distorted was the wrong word.
> 
> 
> I think I am confused what truesize is used for it looks like it is used
> to deallocate memory, is this correct?

No, it is used for receive flow control.
You need to count allocated memory (not data bytes) in order to
actually stop the system running out of memory.

	David



--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux