The patch titled
memcg: change page_cgroup_zoneinfo signature
has been removed from the -mm tree. Its filename was
memcg-change-page_cgroup_zoneinfo-signature.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: memcg: change page_cgroup_zoneinfo signature
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Instead of passing a whole struct page_cgroup to this function, let it
take only what it really needs from it: the struct mem_cgroup and the
page.
This has the advantage that reading pc->mem_cgroup is now done at the same
place where the ordering rules for this pointer are enforced and
explained.
It is also in preparation for removing the pc->page backpointer.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page_cgroup.h | 10 ----------
mm/memcontrol.c | 19 +++++++++----------
2 files changed, 9 insertions(+), 20 deletions(-)
diff -puN include/linux/page_cgroup.h~memcg-change-page_cgroup_zoneinfo-signature include/linux/page_cgroup.h
--- a/include/linux/page_cgroup.h~memcg-change-page_cgroup_zoneinfo-signature
+++ a/include/linux/page_cgroup.h
@@ -85,16 +85,6 @@ SETPCGFLAG(Migration, MIGRATION)
CLEARPCGFLAG(Migration, MIGRATION)
TESTPCGFLAG(Migration, MIGRATION)
-static inline int page_cgroup_nid(struct page_cgroup *pc)
-{
- return page_to_nid(pc->page);
-}
-
-static inline enum zone_type page_cgroup_zid(struct page_cgroup *pc)
-{
- return page_zonenum(pc->page);
-}
-
static inline void lock_page_cgroup(struct page_cgroup *pc)
{
/*
diff -puN mm/memcontrol.c~memcg-change-page_cgroup_zoneinfo-signature mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-change-page_cgroup_zoneinfo-signature
+++ a/mm/memcontrol.c
@@ -364,11 +364,10 @@ struct cgroup_subsys_state *mem_cgroup_c
}
static struct mem_cgroup_per_zone *
-page_cgroup_zoneinfo(struct page_cgroup *pc)
+page_cgroup_zoneinfo(struct mem_cgroup *mem, struct page *page)
{
- struct mem_cgroup *mem = pc->mem_cgroup;
- int nid = page_cgroup_nid(pc);
- int zid = page_cgroup_zid(pc);
+ int nid = page_to_nid(page);
+ int zid = page_zonenum(page);
return mem_cgroup_zoneinfo(mem, nid, zid);
}
@@ -800,7 +799,7 @@ void mem_cgroup_del_lru_list(struct page
* We don't check PCG_USED bit. It's cleared when the "page" is finally
* removed from global LRU.
*/
- mz = page_cgroup_zoneinfo(pc);
+ mz = page_cgroup_zoneinfo(pc->mem_cgroup, page);
/* huge page split is done under lru_lock. so, we have no races. */
MEM_CGROUP_ZSTAT(mz, lru) -= 1 << compound_order(page);
if (mem_cgroup_is_root(pc->mem_cgroup))
@@ -836,7 +835,7 @@ void mem_cgroup_rotate_reclaimable_page(
smp_rmb();
if (mem_cgroup_is_root(pc->mem_cgroup))
return;
- mz = page_cgroup_zoneinfo(pc);
+ mz = page_cgroup_zoneinfo(pc->mem_cgroup, page);
list_move_tail(&pc->lru, &mz->lists[lru]);
}
@@ -856,7 +855,7 @@ void mem_cgroup_rotate_lru_list(struct p
smp_rmb();
if (mem_cgroup_is_root(pc->mem_cgroup))
return;
- mz = page_cgroup_zoneinfo(pc);
+ mz = page_cgroup_zoneinfo(pc->mem_cgroup, page);
list_move(&pc->lru, &mz->lists[lru]);
}
@@ -873,7 +872,7 @@ void mem_cgroup_add_lru_list(struct page
return;
/* Ensure pc->mem_cgroup is visible after reading PCG_USED. */
smp_rmb();
- mz = page_cgroup_zoneinfo(pc);
+ mz = page_cgroup_zoneinfo(pc->mem_cgroup, page);
/* huge page split is done under lru_lock. so, we have no races. */
MEM_CGROUP_ZSTAT(mz, lru) += 1 << compound_order(page);
SetPageCgroupAcctLRU(pc);
@@ -1043,7 +1042,7 @@ mem_cgroup_get_reclaim_stat_from_page(st
return NULL;
/* Ensure pc->mem_cgroup is visible after reading PCG_USED. */
smp_rmb();
- mz = page_cgroup_zoneinfo(pc);
+ mz = page_cgroup_zoneinfo(pc->mem_cgroup, page);
if (!mz)
return NULL;
@@ -2192,7 +2191,7 @@ void mem_cgroup_split_huge_fixup(struct
* We hold lru_lock, then, reduce counter directly.
*/
lru = page_lru(head);
- mz = page_cgroup_zoneinfo(head_pc);
+ mz = page_cgroup_zoneinfo(head_pc->mem_cgroup, head);
MEM_CGROUP_ZSTAT(mz, lru) -= 1;
}
tail_pc->flags = head_pc->flags & ~PCGF_NOCOPY_AT_SPLIT;
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
origin.patch
mm-add-vm-counters-for-transparent-hugepages.patch
mm-batch-activate_page-to-reduce-lock-contention.patch
memcg-document-cgroup-dirty-memory-interfaces.patch
memcg-add-page_cgroup-flags-for-dirty-page-tracking.patch
memcg-add-dirty-page-accounting-infrastructure.patch
memcg-add-kernel-calls-for-memcg-dirty-page-stats.patch
memcg-add-dirty-limits-to-mem_cgroup.patch
memcg-add-cgroupfs-interface-to-memcg-dirty-limits.patch
memcg-add-dirty-limiting-routines.patch
memcg-check-memcg-dirty-limits-in-page-writeback.patch
memcg-make-background-writeback-memcg-aware.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
