Messages in this thread | | | Date | Wed, 29 Mar 2006 23:30:37 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH][RFC] splice support |
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Jens Axboe <axboe@suse.de> wrote: > > > > Right now "flags" doesn't do anything at all, and you should just pass in > > > zero. > > > > In that case perhaps we should be enforcing flags==0 so that future > > flags-using applications will reliably fail on old flags-not-understanding > > kernels. > > > > But that won't work if we later define a bit in flags to mean "behave like > > old kernels used to". So perhaps we should require that bits 0-15 of > > `flags' be zero and not care about bits 16-31. > > > > IOW: it might be best to make `flags' just go away, and add new syscalls in > > the future as appropriate. > > Not if flags == 0 maintains the same behaviour. The only flag I can > think of right now is the 'move' or 'gift' flag, meaning that the caller > wants to migrate pages from the pipe instead of copying them. I'd > imagine we'd get that in way before 2.6.17 anyways, so I think we're > fine.
OK.. Do you plan to make it reject unrecognised flags? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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