On Fri, Oct 11, 2013 at 01:35:36PM -0700, Kent Overstreet wrote: > On Fri, Oct 11, 2013 at 03:18:05PM +0800, Shaohua Li wrote: > > add an API to return free tags, blk-mq-tag will use it > > Can you explain how this is going to be used? Seems like something that > could be prone to misuse, try and convince me there isn't a better way > to do what it's for.
There are two usages. One is for sysfs info output, which can be used for diagnosis. The other one is blk-mq wants to determine if it's possible a request can be queued. Neither requires precise data. Yes, caller should be aware returned data isn't very precise. Thanks, Shaohua -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
