6 files changed, 57 insertions, 2 deletions
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 7279b94c01da..91aa89e1aaa0 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -285,7 +285,7 @@ extern struct clocksource* clocksource_get_next(void);
 extern void clocksource_change_rating(struct clocksource *cs, int rating);
 extern void clocksource_suspend(void);
 extern void clocksource_resume(void);
-extern struct clocksource * __init __weak clocksource_default_clock(void);
+extern struct clocksource * __init clocksource_default_clock(void);
 extern void clocksource_mark_unstable(struct clocksource *cs);
 
 extern void
diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
index c6e091bf39a5..bdfc95bddde9 100644
--- a/include/linux/kgdb.h
+++ b/include/linux/kgdb.h
@@ -283,7 +283,7 @@ struct kgdb_io {
 
 extern struct kgdb_arch		arch_kgdb_ops;
 
-extern unsigned long __weak kgdb_arch_pc(int exception, struct pt_regs *regs);
+extern unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs);
 
 #ifdef CONFIG_SERIAL_KGDB_NMI
 extern int kgdb_register_nmi_console(void);
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index d6183f06d8c1..a3b4812f494f 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -124,6 +124,25 @@ extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
 extern void mem_cgroup_replace_page_cache(struct page *oldpage,
 					struct page *newpage);
 
+static inline void mem_cgroup_oom_enable(void)
+{
+	WARN_ON(current->memcg_oom.may_oom);
+	current->memcg_oom.may_oom = 1;
+}
+
+static inline void mem_cgroup_oom_disable(void)
+{
+	WARN_ON(!current->memcg_oom.may_oom);
+	current->memcg_oom.may_oom = 0;
+}
+
+static inline bool task_in_memcg_oom(struct task_struct *p)
+{
+	return p->memcg_oom.memcg;
+}
+
+bool mem_cgroup_oom_synchronize(bool wait);
+
 #ifdef CONFIG_MEMCG_SWAP
 extern int do_swap_account;
 #endif
@@ -347,6 +366,24 @@ static inline void mem_cgroup_end_update_page_stat(struct page *page,
 {
 }
 
+static inline void mem_cgroup_oom_enable(void)
+{
+}
+
+static inline void mem_cgroup_oom_disable(void)
+{
+}
+
+static inline bool task_in_memcg_oom(struct task_struct *p)
+{
+	return false;
+}
+
+static inline bool mem_cgroup_oom_synchronize(bool wait)
+{
+	return false;
+}
+
 static inline void mem_cgroup_inc_page_stat(struct page *page,
 					    enum mem_cgroup_page_stat_item idx)
 {
diff --git a/include/linux/mm.h b/include/linux/mm.h
index fc02c749ae77..c613aae04189 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -170,6 +170,7 @@ extern pgprot_t protection_map[16];
 #define FAULT_FLAG_RETRY_NOWAIT	0x10	/* Don't drop mmap_sem and wait when retrying */
 #define FAULT_FLAG_KILLABLE	0x20	/* The fault task is in SIGKILL killable region */
 #define FAULT_FLAG_TRIED	0x40	/* second try */
+#define FAULT_FLAG_USER		0x80	/* The fault originated in userspace */
 
 /*
  * vm_fault is filled by the the pagefault handler and passed to the vma's
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 104b62f23ee0..54e351aa4d2e 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1184,11 +1184,22 @@ struct nfs41_free_stateid_res {
 	unsigned int			status;
 };
 
+static inline void
+nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
+{
+	kfree(cinfo->buckets);
+}
+
 #else
 
 struct pnfs_ds_commit_info {
 };
 
+static inline void
+nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
+{
+}
+
 #endif /* CONFIG_NFS_V4_1 */
 
 struct nfs_page;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1e287bacafc7..6ca9630fde2d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1432,6 +1432,12 @@ struct task_struct {
 		unsigned long memsw_nr_pages; /* uncharged mem+swap usage */
 	} memcg_batch;
 	unsigned int memcg_kmem_skip_account;
+	struct memcg_oom_info {
+		struct mem_cgroup *memcg;
+		gfp_t gfp_mask;
+		int order;
+		unsigned int may_oom:1;
+	} memcg_oom;
 #endif
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
 	atomic_t ptrace_bp_refcnt;