Messages in this thread | | | Date | Thu, 13 May 2010 14:01:37 -0400 | From | Josef Bacik <> | Subject | Re: [PATCH 4/4] Btrfs: add basic DIO read/write support V3 |
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On Thu, May 13, 2010 at 11:26:39AM -0400, Christoph Hellwig wrote: > 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. >
Ok how about I just do
local_irq_disable() kmap(KM_IRQ0) local_irq_enable()
would that be acceptable? Thanks,
Josef
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