1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index cbd4e18adb20..c4af92fa12c3 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -36,6 +36,7 @@
 #include <linux/parser.h>
 #include <linux/fs_stack.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>     /* For lock_kernel() */
 #include "ecryptfs_kernel.h"
 
 /**
@@ -550,6 +551,7 @@ static int ecryptfs_get_sb(struct file_system_type *fs_type, int flags,
         const char *err = "Getting sb failed";
         int rc;
 
+        lock_kernel();
         sbi = kmem_cache_zalloc(ecryptfs_sb_info_cache, GFP_KERNEL);
         if (!sbi) {
                 rc = -ENOMEM;
@@ -608,6 +610,7 @@ static int ecryptfs_get_sb(struct file_system_type *fs_type, int flags,
                 goto out;
         }
         simple_set_mnt(mnt, s);
+        unlock_kernel();
         return 0;
 
 out:
@@ -616,6 +619,7 @@ out:
                 kmem_cache_free(ecryptfs_sb_info_cache, sbi);
         }
         printk(KERN_ERR "%s; rc = [%d]\n", err, rc);
+        unlock_kernel();
         return rc;
 }