On Wed, Mar 30, 2016 at 10:22:07AM +0000, He Kuang wrote: > This reverts commit 998d39cb236fe464af86a3492a24d2f67ee1efc2. > > When local irq is disabled, a percpu variable does not change, so we can > remove the access macros and let the compiler optimize the code safely. > batch can be changed from other contexts. Why is this safe? -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>