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authorAndrew Morton <akpm@linux-foundation.org>2013-09-25 02:27:37 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-25 04:00:26 +0400
commit694fbc0fe78518d06efa63910bf4ecee660e7852 (patch)
tree895244c4cc010759ce5c29333bee3cddc8c852d2 /include/linux
parent30361e51cae7a4df3fec89f935a450a6fe6f16fa (diff)
downloadlinux-694fbc0fe78518d06efa63910bf4ecee660e7852.tar.xz
revert "memcg: enhance memcg iterator to support predicates"
Revert commit de57780dc659 ("memcg: enhance memcg iterator to support predicates") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/memcontrol.h49
1 files changed, 6 insertions, 43 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 60e95872da29..ef2b9bd7fafa 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -53,23 +53,6 @@ struct mem_cgroup_reclaim_cookie {
unsigned int generation;
};
-enum mem_cgroup_filter_t {
- VISIT, /* visit current node */
- SKIP, /* skip the current node and continue traversal */
- SKIP_TREE, /* skip the whole subtree and continue traversal */
-};
-
-/*
- * mem_cgroup_filter_t predicate might instruct mem_cgroup_iter_cond how to
- * iterate through the hierarchy tree. Each tree element is checked by the
- * predicate before it is returned by the iterator. If a filter returns
- * SKIP or SKIP_TREE then the iterator code continues traversal (with the
- * next node down the hierarchy or the next node that doesn't belong under the
- * memcg's subtree).
- */
-typedef enum mem_cgroup_filter_t
-(*mem_cgroup_iter_filter)(struct mem_cgroup *memcg, struct mem_cgroup *root);
-
#ifdef CONFIG_MEMCG
/*
* All "charge" functions with gfp_mask should use GFP_KERNEL or
@@ -137,18 +120,9 @@ mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
extern void mem_cgroup_end_migration(struct mem_cgroup *memcg,
struct page *oldpage, struct page *newpage, bool migration_ok);
-struct mem_cgroup *mem_cgroup_iter_cond(struct mem_cgroup *root,
- struct mem_cgroup *prev,
- struct mem_cgroup_reclaim_cookie *reclaim,
- mem_cgroup_iter_filter cond);
-
-static inline struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root,
- struct mem_cgroup *prev,
- struct mem_cgroup_reclaim_cookie *reclaim)
-{
- return mem_cgroup_iter_cond(root, prev, reclaim, NULL);
-}
-
+struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *,
+ struct mem_cgroup *,
+ struct mem_cgroup_reclaim_cookie *);
void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *);
/*
@@ -260,8 +234,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page,
mem_cgroup_update_page_stat(page, idx, -1);
}
-enum mem_cgroup_filter_t
-mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg,
+bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg,
struct mem_cgroup *root);
void __mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx);
@@ -376,15 +349,6 @@ static inline void mem_cgroup_end_migration(struct mem_cgroup *memcg,
struct page *oldpage, struct page *newpage, bool migration_ok)
{
}
-static inline struct mem_cgroup *
-mem_cgroup_iter_cond(struct mem_cgroup *root,
- struct mem_cgroup *prev,
- struct mem_cgroup_reclaim_cookie *reclaim,
- mem_cgroup_iter_filter cond)
-{
- /* first call must return non-NULL, second return NULL */
- return (struct mem_cgroup *)(unsigned long)!prev;
-}
static inline struct mem_cgroup *
mem_cgroup_iter(struct mem_cgroup *root,
@@ -471,11 +435,10 @@ static inline void mem_cgroup_dec_page_stat(struct page *page,
}
static inline
-enum mem_cgroup_filter_t
-mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg,
+bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg,
struct mem_cgroup *root)
{
- return VISIT;
+ return false;
}
static inline void mem_cgroup_split_huge_fixup(struct page *head)