Re: [PATCH v2 3/4] block: loop: introduce 'use_aio' sysfs file

[Christoph Hellwig]

On Tue, Jan 13, 2015 at 11:44:47PM +0800, Ming Lei wrote:
> So that users can control if kernel aio is used to submit I/O.

Why do you want a sysfs flag for this instead of a flags in ->lo_flags
at setup time?  That's how all other loop-related ABI flags work.

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