On Mon, 2 Nov 2009, Christoph Lameter wrote: > What is realtime in this scenario? There are no guarantees that reclaim > wont have to occur. There are no guarantees anymore and therefore you > cannot really call this realtime. >
Realtime in this scenario is anything with a priority of MAX_RT_PRIO or lower. > Is realtime anything more than: "I want to have my patches merged"? > These allocations are not using ~__GFP_WAIT for a reason, they can block on direct reclaim. But we're convoluting this issue _way_ more than it needs to be. We have used ALLOC_HARDER for these tasks as a convenience for over four years. The fix here is to address an omittion in the page allocator refactoring code that went into 2.6.31 that dropped the check for !in_interrupt(). If you'd like to raise the concern about the rt exemption being given ALLOC_HARDER, then it is seperate from this fix. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
