Re: Approaches to making io_submit not block

[Christoph Hellwig]

On Thu, Sep 01, 2011 at 09:31:07AM -0700, Jeremy Allison wrote:
> > We'd define a new O_LOCKS_WHATEVER flag for it, which gets set either
> > using fcntl(..., F_SETFL, ...) or dup3.  All in all that should be less
> > than 50 lines of code in the kernel.
> 
> Ok, so it'd be set at open() time, say:
> 
> O_CLOLOCK_PERSIST
> 
> (to match the naming of something like O_CLOEXEC) and be available to set
> with F_SETFD via an fcntl and dup3 call ?

Yes, that's the idea.

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