On Mon, 25 Jan 2021, Dave Hansen wrote: > > From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > > RECLAIM_ZONE was assumed to be unused because it was never explicitly > used in the kernel. However, there were a number of places where it > was checked implicitly by checking 'node_reclaim_mode' for a zero > value. > > These zero checks are not great because it is not obvious what a zero > mode *means* in the code. Replace them with a helper which makes it > more obvious: node_reclaim_enabled(). > > This helper also provides a handy place to explicitly check the > RECLAIM_ZONE bit itself. Check it explicitly there to make it more > obvious where the bit can affect behavior. > > This should have no functional impact. > > Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > Reviewed-by: Ben Widawsky <ben.widawsky@xxxxxxxxx> > Acked-by: Christoph Lameter <cl@xxxxxxxxx> > Cc: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> > Cc: "Tobin C. Harding" <tobin@xxxxxxxxxx> > Cc: Christoph Lameter <cl@xxxxxxxxx> > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: Huang Ying <ying.huang@xxxxxxxxx> > Cc: Dan Williams <dan.j.williams@xxxxxxxxx> > Cc: Qian Cai <cai@xxxxxx> > Cc: Daniel Wagner <dwagner@xxxxxxx> > Cc: osalvador <osalvador@xxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
