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-rw-r--r--kernel/fork.c4
-rw-r--r--kernel/lockdep.c1
-rw-r--r--kernel/rwsem.c16
-rw-r--r--kernel/trace/blktrace.c1
4 files changed, 22 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index c509cc4a0d5..987b28a1f01 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1304,6 +1304,10 @@ static struct task_struct *copy_process(unsigned long clone_flags,
p->memcg_batch.do_batch = 0;
p->memcg_batch.memcg = NULL;
#endif
+#ifdef CONFIG_BCACHE
+ p->sequential_io = 0;
+ p->sequential_io_avg = 0;
+#endif
/* Perform scheduler related setup. Assign this task to a CPU. */
sched_fork(p);
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 6a3bccba7e7..1f3186b37fd 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2998,6 +2998,7 @@ void lockdep_init_map(struct lockdep_map *lock, const char *name,
EXPORT_SYMBOL_GPL(lockdep_init_map);
struct lock_class_key __lockdep_no_validate__;
+EXPORT_SYMBOL_GPL(__lockdep_no_validate__);
static int
print_lock_nested_lock_not_held(struct task_struct *curr,
diff --git a/kernel/rwsem.c b/kernel/rwsem.c
index b3c6c3fcd84..cfff1435bdf 100644
--- a/kernel/rwsem.c
+++ b/kernel/rwsem.c
@@ -126,6 +126,15 @@ void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest)
EXPORT_SYMBOL(_down_write_nest_lock);
+void down_read_non_owner(struct rw_semaphore *sem)
+{
+ might_sleep();
+
+ __down_read(sem);
+}
+
+EXPORT_SYMBOL(down_read_non_owner);
+
void down_write_nested(struct rw_semaphore *sem, int subclass)
{
might_sleep();
@@ -136,6 +145,13 @@ void down_write_nested(struct rw_semaphore *sem, int subclass)
EXPORT_SYMBOL(down_write_nested);
+void up_read_non_owner(struct rw_semaphore *sem)
+{
+ __up_read(sem);
+}
+
+EXPORT_SYMBOL(up_read_non_owner);
+
#endif
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index ed58a3216a6..b8b8560bfb9 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1808,6 +1808,7 @@ void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
rwbs[i] = '\0';
}
+EXPORT_SYMBOL_GPL(blk_fill_rwbs);
#endif /* CONFIG_EVENT_TRACING */