On Tue, Sep 18, 2012 at 06:04:02PM +0400, Glauber Costa wrote: > This flag is used to indicate to the callees that this allocation is a > kernel allocation in process context, and should be accounted to > current's memcg. It takes numerical place of the of the recently removed > __GFP_NO_KSWAPD. > > Signed-off-by: Glauber Costa <[email protected]> > CC: Christoph Lameter <[email protected]> > CC: Pekka Enberg <[email protected]> > CC: Michal Hocko <[email protected]> > CC: Johannes Weiner <[email protected]> > CC: Suleiman Souhlal <[email protected]> > CC: Rik van Riel <[email protected]> > CC: Mel Gorman <[email protected]> > Acked-by: Kamezawa Hiroyuki <[email protected]>
I agree with Christophs recommendation that this flag always exist instead of being 0 in the !MEMCG_KMEM case. If __GFP_KMEMCG ever is used in another part of the VM (which would be unexpected but still) then the behaviour might differ too much between MEMCG_KMEM and !MEMCG_KMEM cases. As unlikely as the case is, it's not impossible. For tracing __GFP_KMEMCG should have an entry in include/trace/events/gfpflags.h Get rid of the CONFIG_MEMCG_KMEM check and update include/trace/events/gfpflags.h and then feel free to stick my Acked-by on it. -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
