diff --git a/fs/mount.h b/fs/mount.h
index 94fcc306d21e..85f136786bbc 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -33,7 +33,8 @@ struct mnt_namespace {
 } __randomize_layout;
 
 struct mnt_pcp {
-	int mnt_count;
+	unsigned int mnt_gets;
+	unsigned int mnt_puts;
 	int mnt_writers;
 };
 
diff --git a/fs/namespace.c b/fs/namespace.c
index d842fc1f1f1a..73215f84e04d 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -249,16 +249,24 @@ void mnt_release_group_id(struct mount *mnt)
 	mnt->mnt_group_id = 0;
 }
 
-/*
- * vfsmount lock must be held for read
- */
-static inline void mnt_add_count(struct mount *mnt, int n)
+static inline void mnt_inc_count(struct mount *mnt)
 {
 #ifdef CONFIG_SMP
-	this_cpu_add(mnt->mnt_pcp->mnt_count, n);
+	this_cpu_inc(mnt->mnt_pcp->mnt_gets);
 #else
 	preempt_disable();
-	mnt->mnt_count += n;
+	mnt->mnt_count++;
+	preempt_enable();
+#endif
+}
+
+static inline void mnt_dec_count(struct mount *mnt)
+{
+#ifdef CONFIG_SMP
+	this_cpu_inc(mnt->mnt_pcp->mnt_puts);
+#else
+	preempt_disable();
+	mnt->mnt_count--;
 	preempt_enable();
 #endif
 }
@@ -269,14 +277,17 @@ static inline void mnt_add_count(struct mount *mnt, int n)
 int mnt_get_count(struct mount *mnt)
 {
 #ifdef CONFIG_SMP
-	int count = 0;
+	unsigned int gets = 0, puts = 0;
 	int cpu;
 
-	for_each_possible_cpu(cpu) {
-		count += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_count;
-	}
+	/* puts first, so a put counted here has its get counted below */
+	for_each_possible_cpu(cpu)
+		puts += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_puts;
+	smp_mb();	/* pairs with the smp_wmb() in mntput_no_expire() */
+	for_each_possible_cpu(cpu)
+		gets += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_gets;
 
-	return count;
+	return gets - puts;
 #else
 	return mnt->mnt_count;
 #endif
@@ -305,7 +316,7 @@ static struct mount *alloc_vfsmnt(const char *name)
 		if (!mnt->mnt_pcp)
 			goto out_free_devname;
 
-		this_cpu_add(mnt->mnt_pcp->mnt_count, 1);
+		this_cpu_inc(mnt->mnt_pcp->mnt_gets);
 #else
 		mnt->mnt_count = 1;
 		mnt->mnt_writers = 0;
@@ -746,13 +757,13 @@ int __legitimize_mnt(struct vfsmount *bastard, unsigned seq)
 	if (bastard == NULL)
 		return 0;
 	mnt = real_mount(bastard);
-	mnt_add_count(mnt, 1);
-	smp_mb();		// see mntput_no_expire() and do_umount()
+	mnt_inc_count(mnt);
+	smp_mb();	/* see mntput_no_expire_slowpath() and do_umount() */
 	if (likely(!read_seqretry(&mount_lock, seq)))
 		return 0;
 	lock_mount_hash();
 	if (unlikely(bastard->mnt_flags & (MNT_SYNC_UMOUNT | MNT_DOOMED))) {
-		mnt_add_count(mnt, -1);
+		mnt_dec_count(mnt);
 		unlock_mount_hash();
 		return 1;
 	}
@@ -1348,7 +1359,7 @@ static void noinline mntput_no_expire_slowpath(struct mount *mnt)
 	 * mount_lock, we'll see their refcount increment here.
 	 */
 	smp_mb();
-	mnt_add_count(mnt, -1);
+	mnt_dec_count(mnt);
 	count = mnt_get_count(mnt);
 	if (count != 0) {
 		WARN_ON(count < 0);
@@ -1405,7 +1416,8 @@ static void mntput_no_expire(struct mount *mnt)
 		 * non-NULL under rcu_read_lock(), the reference
 		 * we are dropping is not the final one.
 		 */
-		mnt_add_count(mnt, -1);
+		smp_wmb();	/* pairs with the smp_mb() in mnt_get_count() */
+		mnt_dec_count(mnt);
 		rcu_read_unlock();
 		return;
 	}
@@ -1427,7 +1439,7 @@ EXPORT_SYMBOL(mntput);
 struct vfsmount *mntget(struct vfsmount *mnt)
 {
 	if (mnt)
-		mnt_add_count(real_mount(mnt), 1);
+		mnt_inc_count(real_mount(mnt));
 	return mnt;
 }
 EXPORT_SYMBOL(mntget);