Re: scsi-mq V2

From: Jeff Moyer
Date: Thu Jul 10 2014 - 11:12:03 EST


Benjamin LaHaise <bcrl@xxxxxxxxx> writes:

>>
>> [ 186.339064] ioctx_alloc: nr_events=-2 aio_max_nr=65536
>> [ 186.339065] ioctx_alloc: nr_events=-2 aio_max_nr=65536
>> [ 186.339067] ioctx_alloc: nr_events=-2 aio_max_nr=65536
>> [ 186.339068] ioctx_alloc: nr_events=-2 aio_max_nr=65536
>> [ 186.339069] ioctx_alloc: nr_events=-2 aio_max_nr=65536
>
> Something is horribly wrong here. There is no way that value for nr_events
> should be passed in to ioctx_alloc(). This implies that userland is calling
> io_setup() with an impossibly large value for nr_events. Can you post the
> actual diff for your fs/aio.c relative to linus' tree?
>

fio does exactly this! it passes INT_MAX.

Cheers,
Jeff
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