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Diffstat (limited to 'mm')
-rw-r--r--mm/oom_kill.c4
-rw-r--r--mm/sparse.c10
-rw-r--r--mm/vmstat.c1
3 files changed, 13 insertions, 2 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index f255eda693b0..beb592fe9389 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -423,7 +423,7 @@ void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask)
struct task_struct *p;
cgroup_lock();
- rcu_read_lock();
+ read_lock(&tasklist_lock);
retry:
p = select_bad_process(&points, mem);
if (PTR_ERR(p) == -1UL)
@@ -436,7 +436,7 @@ retry:
"Memory cgroup out of memory"))
goto retry;
out:
- rcu_read_unlock();
+ read_unlock(&tasklist_lock);
cgroup_unlock();
}
#endif
diff --git a/mm/sparse.c b/mm/sparse.c
index f6a43c09c322..98d6b39c3472 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -149,8 +149,18 @@ static inline int sparse_early_nid(struct mem_section *section)
/* Record a memory area against a node. */
void __init memory_present(int nid, unsigned long start, unsigned long end)
{
+ unsigned long max_arch_pfn = 1UL << (MAX_PHYSMEM_BITS-PAGE_SHIFT);
unsigned long pfn;
+ /*
+ * Sanity checks - do not allow an architecture to pass
+ * in larger pfns than the maximum scope of sparsemem:
+ */
+ if (start >= max_arch_pfn)
+ return;
+ if (end >= max_arch_pfn)
+ end = max_arch_pfn;
+
start &= PAGE_SECTION_MASK;
for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION) {
unsigned long section = pfn_to_section_nr(pfn);
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 422d960ffcd8..7c7286e9506d 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -388,6 +388,7 @@ static char * const migratetype_names[MIGRATE_TYPES] = {
"Reclaimable",
"Movable",
"Reserve",
+ "Isolate",
};
static void *frag_start(struct seq_file *m, loff_t *pos)