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Re: Confusion regarding spin_lock_irqsave and spin_unlock_irqrestore.

On 7/5/06, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote: 
On Wed, 2006-07-05 at 19:38 +0530, Ranjan Sinha wrote:
> Hi,
>
> A very newbie question on locking.
>
> LDD3 talks about spin_lock_irqsave and spin_unlock_restore  and
> mentions that the two _must_ be called from the same function or the
> code might break on some architecture. I searched for this on google
> and found that one of the platform on which it can break is sparc.

this is no longer the case; it used to be like that in older kernels,
but that got fixed for 2.6 kernels.


So now the functions spin_lock_irqsave() and spin_unlock_restore() can
be called from different functions (rather being called pairwise in a
single function)?

Thanks,

Rajat

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