Messages in this thread | | | Date | Tue, 13 Aug 2002 10:34:28 -0700 (PDT) | Subject | Re: [patch 2/21] reduced locking in buffer.c | From | "David S. Miller" <> |
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From: Linus Torvalds <torvalds@transmeta.com> Date: Tue, 13 Aug 2002 10:34:37 -0700 (PDT)
On Sun, 11 Aug 2002, Andrew Morton wrote: > Resend. Replace the buffer lru spinlock protection with > local_irq_disable and a cross-CPU call to invalidate them. This almost certainly breaks on sparc, where CPU cross-calls are non-maskable, so local_irq_disable doesn't do anything for them. Talk to Davem about this - there may be some workaround.
I told him it's OK in 2.5.x as I've discovered a way to implement sparc32 (once we have it working again) such that local_irq_disable blocks cross calls. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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