On Mon, Jun 4, 2012 at 9:53 PM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote: > Hi Wanpeng, > > On Mon, Jun 04, 2012 at 08:40:42PM +0800, Wanpeng Li wrote: >> From: Wanpeng Li <liwp@xxxxxxxxxxxxxxxxxx> >> >> remove no longer use of pdflush interface nr_pdflush_threads. > > The patch looks good in itself: the nr_pdflush_threads takes no effect > for many of the recent kernels. But what's the normal process of > interface removal? Shall we carry some warning printk for some time > first or whatever? Yes. you have to add printk warning for noticing it deprecated. And add descriptoin in Documentation/ABI/obsolete/ and Documentation/feature-removal-schedule.txt I don't know how long we maintain it. Is there any rule for it? Maybe 1-year is suitable, IMHO. Thanks. -- Kind regards, Minchan Kim -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html