new helper: dentry_free()

commit b4f0354e968f5fabd39bc85b99fedae4a97589fe upstream.

The part of old d_free() that dealt with actual freeing of dentry.
Taken out of dentry_kill() into a separate function.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/fs/dcache.c b/fs/dcache.c
index 533a44b8e021dace231cbf7b0279869ea7a888e7..362aa79c90b3caee0542456749ccb874ed11d3b4 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -274,6 +274,15 @@ static void __d_free(struct rcu_head *head)
        kmem_cache_free(dentry_cache, dentry); 
 }
 
+static void dentry_free(struct dentry *dentry)
+{
+       /* if dentry was never visible to RCU, immediate free is OK */
+       if (!(dentry->d_flags & DCACHE_RCUACCESS))
+               __d_free(&dentry->d_u.d_rcu);
+       else
+               call_rcu(&dentry->d_u.d_rcu, __d_free);
+}
+
 /**
  * dentry_rcuwalk_barrier - invalidate in-progress rcu-walk lookups
  * @dentry: the target dentry
@@ -535,11 +544,7 @@ relock:
        if (dentry->d_op && dentry->d_op->d_release)
                dentry->d_op->d_release(dentry);
 
-       /* if dentry was never visible to RCU, immediate free is OK */
-       if (!(dentry->d_flags & DCACHE_RCUACCESS))
-               __d_free(&dentry->d_u.d_rcu);
-       else
-               call_rcu(&dentry->d_u.d_rcu, __d_free);
+       dentry_free(dentry);
        return parent;
 }