1 files changed, 6 insertions, 2 deletions

diff --git a/fs/seq_file.c b/fs/seq_file.c
index eae7d9dbf3ff..1326fc0d20b2 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/fs.h>
+#include <linux/mount.h>
 #include <linux/module.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
@@ -458,13 +459,16 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
         char *buf;
         size_t size = seq_get_buf(m, &buf);
         int res = -ENAMETOOLONG;
+        int cpu = get_cpu();
+        put_cpu();
 
         if (size) {
                 char *p;
 
-                spin_lock(&dcache_lock);
+                vfsmount_read_lock(cpu);
                 p = __d_path(path, root, buf, size);
-                spin_unlock(&dcache_lock);
+                vfsmount_read_unlock(cpu);
+
                 res = PTR_ERR(p);
                 if (!IS_ERR(p)) {
                         char *end = mangle_path(buf, p, esc);