* [PATCH 0/2] memcg: update for fix and cleanup.
@ 2008-12-18 8:54 ` KAMEZAWA Hiroyuki
0 siblings, 0 replies; 6+ messages in thread
From: KAMEZAWA Hiroyuki @ 2008-12-18 8:54 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, akpm, menage, balbir, nishimura, lizf
Paul Menage's css_tryget() is now in -mm queue and it's useful to
make memcg sane. These 2 patches are updates for memcg sanity.
[1/2] memcg fix double free error and refcnt management of memcg.
[2/2] memcg use css_tryget() and remove private obsolete flag.
-Kame
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 0/2] memcg: update for fix and cleanup.
@ 2008-12-18 8:54 ` KAMEZAWA Hiroyuki
0 siblings, 0 replies; 6+ messages in thread
From: KAMEZAWA Hiroyuki @ 2008-12-18 8:54 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, akpm, menage, balbir, nishimura, lizf
Paul Menage's css_tryget() is now in -mm queue and it's useful to
make memcg sane. These 2 patches are updates for memcg sanity.
[1/2] memcg fix double free error and refcnt management of memcg.
[2/2] memcg use css_tryget() and remove private obsolete flag.
-Kame
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2] memcg: fix double free and make refcnt sane
2008-12-18 8:54 ` KAMEZAWA Hiroyuki
@ 2008-12-18 8:58 ` KAMEZAWA Hiroyuki
-1 siblings, 0 replies; 6+ messages in thread
From: KAMEZAWA Hiroyuki @ 2008-12-18 8:58 UTC (permalink / raw)
To: KAMEZAWA Hiroyuki
Cc: linux-kernel, linux-mm, akpm, menage, balbir, nishimura, lizf
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
1. Fix double-free BUG in error route of mem_cgroup_create().
mem_cgroup_free() itself frees per-zone-info.
2. Making refcnt of memcg simple.
Add 1 refcnt at creation and call free when refcnt goes down to 0.
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Singed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
Index: mmotm-2.6.28-Dec16/mm/memcontrol.c
===================================================================
--- mmotm-2.6.28-Dec16.orig/mm/memcontrol.c
+++ mmotm-2.6.28-Dec16/mm/memcontrol.c
@@ -2085,14 +2085,10 @@ static struct mem_cgroup *mem_cgroup_all
* Removal of cgroup itself succeeds regardless of refs from swap.
*/
-static void mem_cgroup_free(struct mem_cgroup *mem)
+static void __mem_cgroup_free(struct mem_cgroup *mem)
{
int node;
- if (atomic_read(&mem->refcnt) > 0)
- return;
-
-
for_each_node_state(node, N_POSSIBLE)
free_mem_cgroup_per_zone_info(mem, node);
@@ -2109,11 +2105,8 @@ static void mem_cgroup_get(struct mem_cg
static void mem_cgroup_put(struct mem_cgroup *mem)
{
- if (atomic_dec_and_test(&mem->refcnt)) {
- if (!mem->obsolete)
- return;
- mem_cgroup_free(mem);
- }
+ if (atomic_dec_and_test(&mem->refcnt))
+ __mem_cgroup_free(mem);
}
@@ -2163,12 +2156,10 @@ mem_cgroup_create(struct cgroup_subsys *
if (parent)
mem->swappiness = get_swappiness(parent);
-
+ atomic_set(&mem->refcnt, 1);
return &mem->css;
free_out:
- for_each_node_state(node, N_POSSIBLE)
- free_mem_cgroup_per_zone_info(mem, node);
- mem_cgroup_free(mem);
+ __mem_cgroup_free(mem);
return ERR_PTR(-ENOMEM);
}
@@ -2183,7 +2174,7 @@ static void mem_cgroup_pre_destroy(struc
static void mem_cgroup_destroy(struct cgroup_subsys *ss,
struct cgroup *cont)
{
- mem_cgroup_free(mem_cgroup_from_cont(cont));
+ mem_cgroup_put(mem_cgroup_from_cont(cont));
}
static int mem_cgroup_populate(struct cgroup_subsys *ss,
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2] memcg: fix double free and make refcnt sane
@ 2008-12-18 8:58 ` KAMEZAWA Hiroyuki
0 siblings, 0 replies; 6+ messages in thread
From: KAMEZAWA Hiroyuki @ 2008-12-18 8:58 UTC (permalink / raw)
To: KAMEZAWA Hiroyuki
Cc: linux-kernel, linux-mm, akpm, menage, balbir, nishimura, lizf
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
1. Fix double-free BUG in error route of mem_cgroup_create().
mem_cgroup_free() itself frees per-zone-info.
2. Making refcnt of memcg simple.
Add 1 refcnt at creation and call free when refcnt goes down to 0.
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Singed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
Index: mmotm-2.6.28-Dec16/mm/memcontrol.c
===================================================================
--- mmotm-2.6.28-Dec16.orig/mm/memcontrol.c
+++ mmotm-2.6.28-Dec16/mm/memcontrol.c
@@ -2085,14 +2085,10 @@ static struct mem_cgroup *mem_cgroup_all
* Removal of cgroup itself succeeds regardless of refs from swap.
*/
-static void mem_cgroup_free(struct mem_cgroup *mem)
+static void __mem_cgroup_free(struct mem_cgroup *mem)
{
int node;
- if (atomic_read(&mem->refcnt) > 0)
- return;
-
-
for_each_node_state(node, N_POSSIBLE)
free_mem_cgroup_per_zone_info(mem, node);
@@ -2109,11 +2105,8 @@ static void mem_cgroup_get(struct mem_cg
static void mem_cgroup_put(struct mem_cgroup *mem)
{
- if (atomic_dec_and_test(&mem->refcnt)) {
- if (!mem->obsolete)
- return;
- mem_cgroup_free(mem);
- }
+ if (atomic_dec_and_test(&mem->refcnt))
+ __mem_cgroup_free(mem);
}
@@ -2163,12 +2156,10 @@ mem_cgroup_create(struct cgroup_subsys *
if (parent)
mem->swappiness = get_swappiness(parent);
-
+ atomic_set(&mem->refcnt, 1);
return &mem->css;
free_out:
- for_each_node_state(node, N_POSSIBLE)
- free_mem_cgroup_per_zone_info(mem, node);
- mem_cgroup_free(mem);
+ __mem_cgroup_free(mem);
return ERR_PTR(-ENOMEM);
}
@@ -2183,7 +2174,7 @@ static void mem_cgroup_pre_destroy(struc
static void mem_cgroup_destroy(struct cgroup_subsys *ss,
struct cgroup *cont)
{
- mem_cgroup_free(mem_cgroup_from_cont(cont));
+ mem_cgroup_put(mem_cgroup_from_cont(cont));
}
static int mem_cgroup_populate(struct cgroup_subsys *ss,
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/2] memcg: use css_tryget in memcg
2008-12-18 8:54 ` KAMEZAWA Hiroyuki
@ 2008-12-18 8:58 ` KAMEZAWA Hiroyuki
-1 siblings, 0 replies; 6+ messages in thread
From: KAMEZAWA Hiroyuki @ 2008-12-18 8:58 UTC (permalink / raw)
To: KAMEZAWA Hiroyuki
Cc: linux-kernel, linux-mm, akpm, menage, balbir, nishimura, lizf
From:KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Use css_tryget() in memcg.
Based on cgroups-add-css_tryget.patch
css_tryget() newly is added and we can know css is alive or not and
get refcnt of css in very safe way.
("alive" here means "rmdir/destroy" is not called.)
This patch replaces css_get() to css_tryget(), where I cannot explain
why css_get() is safe. And removes memcg->obsolete flag.
Changelog (v0) -> (v1):
- fixed css_ref leak bug at swap-in.
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
Index: mmotm-2.6.28-Dec17/mm/memcontrol.c
===================================================================
--- mmotm-2.6.28-Dec17.orig/mm/memcontrol.c
+++ mmotm-2.6.28-Dec17/mm/memcontrol.c
@@ -162,7 +162,6 @@ struct mem_cgroup {
*/
bool use_hierarchy;
unsigned long last_oom_jiffies;
- int obsolete;
atomic_t refcnt;
unsigned int swappiness;
@@ -283,6 +282,31 @@ struct mem_cgroup *mem_cgroup_from_task(
struct mem_cgroup, css);
}
+static struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm)
+{
+ struct mem_cgroup *mem = NULL;
+ /*
+ * Because we have no locks, mm->owner's may be being moved to other
+ * cgroup. We use css_tryget() here even if this looks
+ * pessimistic (rather than adding locks here).
+ */
+ rcu_read_lock();
+ do {
+ mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
+ if (unlikely(!mem))
+ break;
+ } while (!css_tryget(&mem->css));
+ rcu_read_unlock();
+ return mem;
+}
+
+static bool mem_cgroup_is_obsolete(struct mem_cgroup *mem)
+{
+ if (!mem)
+ return true;
+ return css_is_removed(&mem->css);
+}
+
/*
* Following LRU functions are allowed to be used without PCG_LOCK.
* Operations are called by routine of global LRU independently from memcg.
@@ -617,8 +641,9 @@ mem_cgroup_get_first_node(struct mem_cgr
{
struct cgroup *cgroup;
struct mem_cgroup *ret;
- bool obsolete = (root_mem->last_scanned_child &&
- root_mem->last_scanned_child->obsolete);
+ bool obsolete;
+
+ obsolete = mem_cgroup_is_obsolete(root_mem->last_scanned_child);
/*
* Scan all children under the mem_cgroup mem
@@ -706,7 +731,7 @@ static int mem_cgroup_hierarchical_recla
next_mem = mem_cgroup_get_first_node(root_mem);
while (next_mem != root_mem) {
- if (next_mem->obsolete) {
+ if (mem_cgroup_is_obsolete(next_mem)) {
mem_cgroup_put(next_mem);
next_mem = mem_cgroup_get_first_node(root_mem);
continue;
@@ -762,23 +787,17 @@ static int __mem_cgroup_try_charge(struc
* thread group leader migrates. It's possible that mm is not
* set, if so charge the init_mm (happens for pagecache usage).
*/
- if (likely(!*memcg)) {
- rcu_read_lock();
- mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
- if (unlikely(!mem)) {
- rcu_read_unlock();
- return 0;
- }
- /*
- * For every charge from the cgroup, increment reference count
- */
- css_get(&mem->css);
+ mem = *memcg;
+ if (likely(!mem)) {
+ mem = try_get_mem_cgroup_from_mm(mm);
*memcg = mem;
- rcu_read_unlock();
} else {
- mem = *memcg;
css_get(&mem->css);
}
+ if (unlikely(!mem))
+ return 0;
+
+ VM_BUG_ON(mem_cgroup_is_obsolete(mem));
while (1) {
int ret;
@@ -1065,12 +1084,19 @@ int mem_cgroup_cache_charge(struct page
MEM_CGROUP_CHARGE_TYPE_SHMEM, NULL);
}
+/*
+ * While swap-in, try_charge -> commit or cancel, the page is locked.
+ * And when try_charge() successfully returns, one refcnt to memcg without
+ * struct page_cgroup is aquired. This refcnt will be cumsumed by
+ * "commit()" or removed by "cancel()"
+ */
int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
struct page *page,
gfp_t mask, struct mem_cgroup **ptr)
{
struct mem_cgroup *mem;
swp_entry_t ent;
+ int ret;
if (mem_cgroup_disabled())
return 0;
@@ -1089,10 +1115,15 @@ int mem_cgroup_try_charge_swapin(struct
ent.val = page_private(page);
mem = lookup_swap_cgroup(ent);
- if (!mem || mem->obsolete)
+ if (!mem)
+ goto charge_cur_mm;
+ if (!css_tryget(&mem->css))
goto charge_cur_mm;
*ptr = mem;
- return __mem_cgroup_try_charge(NULL, mask, ptr, true);
+ ret = __mem_cgroup_try_charge(NULL, mask, ptr, true);
+ /* drop extra refcnt from tryget */
+ css_put(&mem->css);
+ return ret;
charge_cur_mm:
if (unlikely(!mm))
mm = &init_mm;
@@ -1123,13 +1154,18 @@ int mem_cgroup_cache_charge_swapin(struc
ent.val = page_private(page);
if (do_swap_account) {
mem = lookup_swap_cgroup(ent);
- if (mem && mem->obsolete)
- mem = NULL;
- if (mem)
- mm = NULL;
+ if (mem) {
+ if (css_tryget(&mem->css))
+ mm = NULL; /* charge to recorded */
+ else
+ mem = NULL; /* charge to current */
+ }
}
ret = mem_cgroup_charge_common(page, mm, mask,
MEM_CGROUP_CHARGE_TYPE_SHMEM, mem);
+ /* drop extra refcnt from tryget */
+ if (mem)
+ css_put(&mem->css);
if (!ret && do_swap_account) {
/* avoid double counting */
@@ -1171,7 +1207,6 @@ void mem_cgroup_commit_charge_swapin(str
struct mem_cgroup *memcg;
memcg = swap_cgroup_record(ent, NULL);
if (memcg) {
- /* If memcg is obsolete, memcg can be != ptr */
res_counter_uncharge(&memcg->memsw, PAGE_SIZE);
mem_cgroup_put(memcg);
}
@@ -1414,14 +1449,9 @@ int mem_cgroup_shrink_usage(struct mm_st
if (!mm)
return 0;
- rcu_read_lock();
- mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
- if (unlikely(!mem)) {
- rcu_read_unlock();
+ mem = try_get_mem_cgroup_from_mm(mm);
+ if (unlikely(!mem))
return 0;
- }
- css_get(&mem->css);
- rcu_read_unlock();
do {
progress = mem_cgroup_hierarchical_reclaim(mem, gfp_mask, true);
@@ -2079,9 +2109,6 @@ static struct mem_cgroup *mem_cgroup_all
* the number of reference from swap_cgroup and free mem_cgroup when
* it goes down to 0.
*
- * When mem_cgroup is destroyed, mem->obsolete will be set to 0 and
- * entry which points to this memcg will be ignore at swapin.
- *
* Removal of cgroup itself succeeds regardless of refs from swap.
*/
@@ -2167,7 +2194,6 @@ static void mem_cgroup_pre_destroy(struc
struct cgroup *cont)
{
struct mem_cgroup *mem = mem_cgroup_from_cont(cont);
- mem->obsolete = 1;
mem_cgroup_force_empty(mem, false);
}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/2] memcg: use css_tryget in memcg
@ 2008-12-18 8:58 ` KAMEZAWA Hiroyuki
0 siblings, 0 replies; 6+ messages in thread
From: KAMEZAWA Hiroyuki @ 2008-12-18 8:58 UTC (permalink / raw)
To: KAMEZAWA Hiroyuki
Cc: linux-kernel, linux-mm, akpm, menage, balbir, nishimura, lizf
From:KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Use css_tryget() in memcg.
Based on cgroups-add-css_tryget.patch
css_tryget() newly is added and we can know css is alive or not and
get refcnt of css in very safe way.
("alive" here means "rmdir/destroy" is not called.)
This patch replaces css_get() to css_tryget(), where I cannot explain
why css_get() is safe. And removes memcg->obsolete flag.
Changelog (v0) -> (v1):
- fixed css_ref leak bug at swap-in.
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
Index: mmotm-2.6.28-Dec17/mm/memcontrol.c
===================================================================
--- mmotm-2.6.28-Dec17.orig/mm/memcontrol.c
+++ mmotm-2.6.28-Dec17/mm/memcontrol.c
@@ -162,7 +162,6 @@ struct mem_cgroup {
*/
bool use_hierarchy;
unsigned long last_oom_jiffies;
- int obsolete;
atomic_t refcnt;
unsigned int swappiness;
@@ -283,6 +282,31 @@ struct mem_cgroup *mem_cgroup_from_task(
struct mem_cgroup, css);
}
+static struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm)
+{
+ struct mem_cgroup *mem = NULL;
+ /*
+ * Because we have no locks, mm->owner's may be being moved to other
+ * cgroup. We use css_tryget() here even if this looks
+ * pessimistic (rather than adding locks here).
+ */
+ rcu_read_lock();
+ do {
+ mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
+ if (unlikely(!mem))
+ break;
+ } while (!css_tryget(&mem->css));
+ rcu_read_unlock();
+ return mem;
+}
+
+static bool mem_cgroup_is_obsolete(struct mem_cgroup *mem)
+{
+ if (!mem)
+ return true;
+ return css_is_removed(&mem->css);
+}
+
/*
* Following LRU functions are allowed to be used without PCG_LOCK.
* Operations are called by routine of global LRU independently from memcg.
@@ -617,8 +641,9 @@ mem_cgroup_get_first_node(struct mem_cgr
{
struct cgroup *cgroup;
struct mem_cgroup *ret;
- bool obsolete = (root_mem->last_scanned_child &&
- root_mem->last_scanned_child->obsolete);
+ bool obsolete;
+
+ obsolete = mem_cgroup_is_obsolete(root_mem->last_scanned_child);
/*
* Scan all children under the mem_cgroup mem
@@ -706,7 +731,7 @@ static int mem_cgroup_hierarchical_recla
next_mem = mem_cgroup_get_first_node(root_mem);
while (next_mem != root_mem) {
- if (next_mem->obsolete) {
+ if (mem_cgroup_is_obsolete(next_mem)) {
mem_cgroup_put(next_mem);
next_mem = mem_cgroup_get_first_node(root_mem);
continue;
@@ -762,23 +787,17 @@ static int __mem_cgroup_try_charge(struc
* thread group leader migrates. It's possible that mm is not
* set, if so charge the init_mm (happens for pagecache usage).
*/
- if (likely(!*memcg)) {
- rcu_read_lock();
- mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
- if (unlikely(!mem)) {
- rcu_read_unlock();
- return 0;
- }
- /*
- * For every charge from the cgroup, increment reference count
- */
- css_get(&mem->css);
+ mem = *memcg;
+ if (likely(!mem)) {
+ mem = try_get_mem_cgroup_from_mm(mm);
*memcg = mem;
- rcu_read_unlock();
} else {
- mem = *memcg;
css_get(&mem->css);
}
+ if (unlikely(!mem))
+ return 0;
+
+ VM_BUG_ON(mem_cgroup_is_obsolete(mem));
while (1) {
int ret;
@@ -1065,12 +1084,19 @@ int mem_cgroup_cache_charge(struct page
MEM_CGROUP_CHARGE_TYPE_SHMEM, NULL);
}
+/*
+ * While swap-in, try_charge -> commit or cancel, the page is locked.
+ * And when try_charge() successfully returns, one refcnt to memcg without
+ * struct page_cgroup is aquired. This refcnt will be cumsumed by
+ * "commit()" or removed by "cancel()"
+ */
int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
struct page *page,
gfp_t mask, struct mem_cgroup **ptr)
{
struct mem_cgroup *mem;
swp_entry_t ent;
+ int ret;
if (mem_cgroup_disabled())
return 0;
@@ -1089,10 +1115,15 @@ int mem_cgroup_try_charge_swapin(struct
ent.val = page_private(page);
mem = lookup_swap_cgroup(ent);
- if (!mem || mem->obsolete)
+ if (!mem)
+ goto charge_cur_mm;
+ if (!css_tryget(&mem->css))
goto charge_cur_mm;
*ptr = mem;
- return __mem_cgroup_try_charge(NULL, mask, ptr, true);
+ ret = __mem_cgroup_try_charge(NULL, mask, ptr, true);
+ /* drop extra refcnt from tryget */
+ css_put(&mem->css);
+ return ret;
charge_cur_mm:
if (unlikely(!mm))
mm = &init_mm;
@@ -1123,13 +1154,18 @@ int mem_cgroup_cache_charge_swapin(struc
ent.val = page_private(page);
if (do_swap_account) {
mem = lookup_swap_cgroup(ent);
- if (mem && mem->obsolete)
- mem = NULL;
- if (mem)
- mm = NULL;
+ if (mem) {
+ if (css_tryget(&mem->css))
+ mm = NULL; /* charge to recorded */
+ else
+ mem = NULL; /* charge to current */
+ }
}
ret = mem_cgroup_charge_common(page, mm, mask,
MEM_CGROUP_CHARGE_TYPE_SHMEM, mem);
+ /* drop extra refcnt from tryget */
+ if (mem)
+ css_put(&mem->css);
if (!ret && do_swap_account) {
/* avoid double counting */
@@ -1171,7 +1207,6 @@ void mem_cgroup_commit_charge_swapin(str
struct mem_cgroup *memcg;
memcg = swap_cgroup_record(ent, NULL);
if (memcg) {
- /* If memcg is obsolete, memcg can be != ptr */
res_counter_uncharge(&memcg->memsw, PAGE_SIZE);
mem_cgroup_put(memcg);
}
@@ -1414,14 +1449,9 @@ int mem_cgroup_shrink_usage(struct mm_st
if (!mm)
return 0;
- rcu_read_lock();
- mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
- if (unlikely(!mem)) {
- rcu_read_unlock();
+ mem = try_get_mem_cgroup_from_mm(mm);
+ if (unlikely(!mem))
return 0;
- }
- css_get(&mem->css);
- rcu_read_unlock();
do {
progress = mem_cgroup_hierarchical_reclaim(mem, gfp_mask, true);
@@ -2079,9 +2109,6 @@ static struct mem_cgroup *mem_cgroup_all
* the number of reference from swap_cgroup and free mem_cgroup when
* it goes down to 0.
*
- * When mem_cgroup is destroyed, mem->obsolete will be set to 0 and
- * entry which points to this memcg will be ignore at swapin.
- *
* Removal of cgroup itself succeeds regardless of refs from swap.
*/
@@ -2167,7 +2194,6 @@ static void mem_cgroup_pre_destroy(struc
struct cgroup *cont)
{
struct mem_cgroup *mem = mem_cgroup_from_cont(cont);
- mem->obsolete = 1;
mem_cgroup_force_empty(mem, false);
}
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-12-18 9:00 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-12-18 8:54 [PATCH 0/2] memcg: update for fix and cleanup KAMEZAWA Hiroyuki
2008-12-18 8:54 ` KAMEZAWA Hiroyuki
2008-12-18 8:58 ` [PATCH 1/2] memcg: fix double free and make refcnt sane KAMEZAWA Hiroyuki
2008-12-18 8:58 ` KAMEZAWA Hiroyuki
2008-12-18 8:58 ` [PATCH 2/2] memcg: use css_tryget in memcg KAMEZAWA Hiroyuki
2008-12-18 8:58 ` KAMEZAWA Hiroyuki
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