Merge branch 'master' into next

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index 228d8c4bfd18..06f8e63f6cb1 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -614,9 +614,11 @@ static inline void __mntput(struct vfsmount *mnt)
          */
         for_each_possible_cpu(cpu) {
                 struct mnt_writer *cpu_writer = &per_cpu(mnt_writers, cpu);
-                if (cpu_writer->mnt != mnt)
-                        continue;
                 spin_lock(&cpu_writer->lock);
+                if (cpu_writer->mnt != mnt) {
+                        spin_unlock(&cpu_writer->lock);
+                        continue;
+                }
                 atomic_add(cpu_writer->count, &mnt->__mnt_writers);
                 cpu_writer->count = 0;
                 /*