Merge branch 'stable-fodder' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs stable fodder fixes from Al Viro:

 - acct_on() fix for deadlock caught by overlayfs folks

 - autofs RCU use-after-free SNAFU (->d_manage() can be called
   locklessly, so we need to RCU-delay freeing the objects it looks at)

 - (hopefully) the end of "do we need freeing this dentry RCU-delayed"
   whack-a-mole.

* 'stable-fodder' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  autofs: fix use-after-free in lockless ->d_manage()
  dcache: sort the freeing-without-RCU-delay mess for good.
  acct_on(): don't mess with freeze protection

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/nsfs.c b/fs/nsfs.c
index 60702d677bd4..30d150a4f0c6 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -85,13 +85,12 @@ slow:
         inode->i_fop = &ns_file_operations;
         inode->i_private = ns;
 
-        dentry = d_alloc_pseudo(mnt->mnt_sb, &empty_name);
+        dentry = d_alloc_anon(mnt->mnt_sb);
         if (!dentry) {
                 iput(inode);
                 return ERR_PTR(-ENOMEM);
         }
         d_instantiate(dentry, inode);
-        dentry->d_flags |= DCACHE_RCUACCESS;
         dentry->d_fsdata = (void *)ns->ops;
         d = atomic_long_cmpxchg(&ns->stashed, 0, (unsigned long)dentry);
         if (d) {