fs: dcache remove dcache_lock

dcache_lock no longer protects anything. remove it.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

1 files changed, 2 insertions, 7 deletions

diff --git a/fs/namei.c b/fs/namei.c
index cbfa5fb31072..5642bc2be418 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -612,8 +612,8 @@ int follow_up(struct path *path)
         return 1;
 }
 
-/* no need for dcache_lock, as serialization is taken care in
- * namespace.c
+/*
+ * serialization is taken care of in namespace.c
  */
 static int __follow_mount(struct path *path)
 {
@@ -645,9 +645,6 @@ static void follow_mount(struct path *path)
         }
 }
 
-/* no need for dcache_lock, as serialization is taken care in
- * namespace.c
- */
 int follow_down(struct path *path)
 {
         struct vfsmount *mounted;
@@ -2131,12 +2128,10 @@ void dentry_unhash(struct dentry *dentry)
 {
         dget(dentry);
         shrink_dcache_parent(dentry);
-        spin_lock(&dcache_lock);
         spin_lock(&dentry->d_lock);
         if (dentry->d_count == 2)
                 __d_drop(dentry);
         spin_unlock(&dentry->d_lock);
-        spin_unlock(&dcache_lock);
 }
 
 int vfs_rmdir(struct inode *dir, struct dentry *dentry)