Re: [PATCH 4/4] Btrfs: add basic DIO read/write support V3

[Christoph Hellwig]

On Thu, May 13, 2010 at 11:31:45AM -0400, Josef Bacik wrote:
> AIO's aio_complete does kmap with KM_IRQ0/1 and it gets called in the same
> context as the btrfs completion handler, so if it's ok for aio_complete it
> should be ok for btrfs right?  Thanks,

aio_complete does a spin_lock_irqsave before that, which disables
interrupts on the local CPU.

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