vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 6 insertions, 4 deletions

diff --git a/init/do_mounts.c b/init/do_mounts.c
index 0f6e1d985a3b..b2eee02e0f83 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -325,17 +325,19 @@ static void __init get_fs_names(char *page)
 
 static int __init do_mount_root(char *name, char *fs, int flags, void *data)
 {
+        struct super_block *s;
         int err = sys_mount(name, "/root", fs, flags, data);
         if (err)
                 return err;
 
         sys_chdir((const char __user __force *)"/root");
-        ROOT_DEV = current->fs->pwd.mnt->mnt_sb->s_dev;
+        s = current->fs->pwd.dentry->d_sb;
+        ROOT_DEV = s->s_dev;
         printk(KERN_INFO
                "VFS: Mounted root (%s filesystem)%s on device %u:%u.\n",
-               current->fs->pwd.mnt->mnt_sb->s_type->name,
-               current->fs->pwd.mnt->mnt_sb->s_flags & MS_RDONLY ?
-               " readonly" : "", MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
+               s->s_type->name,
+               s->s_flags & MS_RDONLY ?  " readonly" : "",
+               MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
         return 0;
 }