Merge branch 'for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup update from Tejun Heo:
 "cpuset got simplified a bit.  cgroup core got a fix on unified
  hierarchy and grew some effective css related interfaces which will be
  used for blkio support for writeback IO traffic which is currently
  being worked on"

* 'for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: implement cgroup_get_e_css()
  cgroup: add cgroup_subsys->css_e_css_changed()
  cgroup: add cgroup_subsys->css_released()
  cgroup: fix the async css offline wait logic in cgroup_subtree_control_write()
  cgroup: restructure child_subsys_mask handling in cgroup_subtree_control_write()
  cgroup: separate out cgroup_calc_child_subsys_mask() from cgroup_refresh_child_subsys_mask()
  cpuset: lock vs unlock typo
  cpuset: simplify cpuset_node_allowed API
  cpuset: convert callback_mutex to a spinlock

6 files changed, 11 insertions, 9 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 30cd96879152..919b86a2164d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -582,7 +582,7 @@ retry_cpuset:
 
 	for_each_zone_zonelist_nodemask(zone, z, zonelist,
 						MAX_NR_ZONES - 1, nodemask) {
-		if (cpuset_zone_allowed_softwall(zone, htlb_alloc_mask(h))) {
+		if (cpuset_zone_allowed(zone, htlb_alloc_mask(h))) {
 			page = dequeue_huge_page_node(h, zone_to_nid(zone));
 			if (page) {
 				if (avoid_reserve)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 3b014d326151..864bba992735 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -233,7 +233,7 @@ static enum oom_constraint constrained_alloc(struct zonelist *zonelist,
 	/* Check this allocation failure is caused by cpuset's wall function */
 	for_each_zone_zonelist_nodemask(zone, z, zonelist,
 			high_zoneidx, nodemask)
-		if (!cpuset_zone_allowed_softwall(zone, gfp_mask))
+		if (!cpuset_zone_allowed(zone, gfp_mask))
 			cpuset_limited = true;
 
 	if (cpuset_limited) {
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a7198c065999..df542feaac3b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1990,7 +1990,7 @@ zonelist_scan:
 
 	/*
 	 * Scan zonelist, looking for a zone with enough free.
-	 * See also __cpuset_node_allowed_softwall() comment in kernel/cpuset.c.
+	 * See also __cpuset_node_allowed() comment in kernel/cpuset.c.
 	 */
 	for_each_zone_zonelist_nodemask(zone, z, zonelist,
 						high_zoneidx, nodemask) {
@@ -2001,7 +2001,7 @@ zonelist_scan:
 				continue;
 		if (cpusets_enabled() &&
 			(alloc_flags & ALLOC_CPUSET) &&
-			!cpuset_zone_allowed_softwall(zone, gfp_mask))
+			!cpuset_zone_allowed(zone, gfp_mask))
 				continue;
 		/*
 		 * Distribute pages in proportion to the individual
@@ -2529,7 +2529,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
 			alloc_flags |= ALLOC_HARDER;
 		/*
 		 * Ignore cpuset mems for GFP_ATOMIC rather than fail, see the
-		 * comment for __cpuset_node_allowed_softwall().
+		 * comment for __cpuset_node_allowed().
 		 */
 		alloc_flags &= ~ALLOC_CPUSET;
 	} else if (unlikely(rt_task(current)) && !in_interrupt())
diff --git a/mm/slab.c b/mm/slab.c
index 79e15f0a2a6e..fee275b5b6b7 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3015,7 +3015,7 @@ retry:
 	for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
 		nid = zone_to_nid(zone);
 
-		if (cpuset_zone_allowed_hardwall(zone, flags) &&
+		if (cpuset_zone_allowed(zone, flags | __GFP_HARDWALL) &&
 			get_node(cache, nid) &&
 			get_node(cache, nid)->free_objects) {
 				obj = ____cache_alloc_node(cache,
diff --git a/mm/slub.c b/mm/slub.c
index 386bbed76e94..765c5884d03d 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1665,7 +1665,8 @@ static void *get_any_partial(struct kmem_cache *s, gfp_t flags,
 
 			n = get_node(s, zone_to_nid(zone));
 
-			if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
+			if (n && cpuset_zone_allowed(zone,
+						     flags | __GFP_HARDWALL) &&
 					n->nr_partial > s->min_partial) {
 				object = get_partial_node(s, n, c, flags);
 				if (object) {
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 4636d9e822c1..a384339bf718 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2405,7 +2405,8 @@ static bool shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
 		 * to global LRU.
 		 */
 		if (global_reclaim(sc)) {
-			if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
+			if (!cpuset_zone_allowed(zone,
+						 GFP_KERNEL | __GFP_HARDWALL))
 				continue;
 
 			lru_pages += zone_reclaimable_pages(zone);
@@ -3388,7 +3389,7 @@ void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx)
 	if (!populated_zone(zone))
 		return;
 
-	if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
+	if (!cpuset_zone_allowed(zone, GFP_KERNEL | __GFP_HARDWALL))
 		return;
 	pgdat = zone->zone_pgdat;
 	if (pgdat->kswapd_max_order < order) {