Commit f929d399 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'akpm' (fixes from Andrew Morton)

Merge fixes from Andrew Morton:
 "5 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: page_alloc: fix zone allocation fairness on UP
  perf: fix perf bug in fork()
  MAINTAINERS: change git URL for mpc5xxx tree
  mm: memcontrol: do not iterate uninitialized memcgs
  ocfs2/dlm: should put mle when goto kill in dlm_assert_master_handler
parents b601ce0f abe5f972
......@@ -5484,7 +5484,7 @@ F: drivers/macintosh/
LINUX FOR POWERPC EMBEDDED MPC5XXX
M: Anatolij Gustschin <agust@denx.de>
L: linuxppc-dev@lists.ozlabs.org
T: git git://git.denx.de/linux-2.6-agust.git
T: git git://git.denx.de/linux-denx-agust.git
S: Maintained
F: arch/powerpc/platforms/512x/
F: arch/powerpc/platforms/52xx/
......
......@@ -2039,6 +2039,10 @@ kill:
"and killing the other node now! This node is OK and can continue.\n");
__dlm_print_one_lock_resource(res);
spin_unlock(&res->spinlock);
spin_lock(&dlm->master_lock);
if (mle)
__dlm_put_mle(mle);
spin_unlock(&dlm->master_lock);
spin_unlock(&dlm->spinlock);
*ret_data = (void *)res;
dlm_put(dlm);
......
......@@ -7948,8 +7948,10 @@ int perf_event_init_task(struct task_struct *child)
for_each_task_context_nr(ctxn) {
ret = perf_event_init_context(child, ctxn);
if (ret)
if (ret) {
perf_event_free_task(child);
return ret;
}
}
return 0;
......
......@@ -1360,7 +1360,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
goto bad_fork_cleanup_policy;
retval = audit_alloc(p);
if (retval)
goto bad_fork_cleanup_policy;
goto bad_fork_cleanup_perf;
/* copy all the process information */
shm_init_task(p);
retval = copy_semundo(clone_flags, p);
......@@ -1566,8 +1566,9 @@ bad_fork_cleanup_semundo:
exit_sem(p);
bad_fork_cleanup_audit:
audit_free(p);
bad_fork_cleanup_policy:
bad_fork_cleanup_perf:
perf_event_free_task(p);
bad_fork_cleanup_policy:
#ifdef CONFIG_NUMA
mpol_put(p->mempolicy);
bad_fork_cleanup_threadgroup_lock:
......
......@@ -292,6 +292,9 @@ struct mem_cgroup {
/* vmpressure notifications */
struct vmpressure vmpressure;
/* css_online() has been completed */
int initialized;
/*
* the counter to account for mem+swap usage.
*/
......@@ -1099,10 +1102,21 @@ skip_node:
* skipping css reference should be safe.
*/
if (next_css) {
if ((next_css == &root->css) ||
((next_css->flags & CSS_ONLINE) &&
css_tryget_online(next_css)))
return mem_cgroup_from_css(next_css);
struct mem_cgroup *memcg = mem_cgroup_from_css(next_css);
if (next_css == &root->css)
return memcg;
if (css_tryget_online(next_css)) {
/*
* Make sure the memcg is initialized:
* mem_cgroup_css_online() orders the the
* initialization against setting the flag.
*/
if (smp_load_acquire(&memcg->initialized))
return memcg;
css_put(next_css);
}
prev_css = next_css;
goto skip_node;
......@@ -5549,6 +5563,7 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css)
{
struct mem_cgroup *memcg = mem_cgroup_from_css(css);
struct mem_cgroup *parent = mem_cgroup_from_css(css->parent);
int ret;
if (css->id > MEM_CGROUP_ID_MAX)
return -ENOSPC;
......@@ -5585,7 +5600,18 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css)
}
mutex_unlock(&memcg_create_mutex);
return memcg_init_kmem(memcg, &memory_cgrp_subsys);
ret = memcg_init_kmem(memcg, &memory_cgrp_subsys);
if (ret)
return ret;
/*
* Make sure the memcg is initialized: mem_cgroup_iter()
* orders reading memcg->initialized against its callers
* reading the memcg members.
*/
smp_store_release(&memcg->initialized, 1);
return 0;
}
/*
......
......@@ -1612,7 +1612,7 @@ again:
}
__mod_zone_page_state(zone, NR_ALLOC_BATCH, -(1 << order));
if (zone_page_state(zone, NR_ALLOC_BATCH) == 0 &&
if (atomic_long_read(&zone->vm_stat[NR_ALLOC_BATCH]) <= 0 &&
!zone_is_fair_depleted(zone))
zone_set_flag(zone, ZONE_FAIR_DEPLETED);
......@@ -5701,9 +5701,8 @@ static void __setup_per_zone_wmarks(void)
zone->watermark[WMARK_HIGH] = min_wmark_pages(zone) + (tmp >> 1);
__mod_zone_page_state(zone, NR_ALLOC_BATCH,
high_wmark_pages(zone) -
low_wmark_pages(zone) -
zone_page_state(zone, NR_ALLOC_BATCH));
high_wmark_pages(zone) - low_wmark_pages(zone) -
atomic_long_read(&zone->vm_stat[NR_ALLOC_BATCH]));
setup_zone_migrate_reserve(zone);
spin_unlock_irqrestore(&zone->lock, flags);
......
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