fold d_kill() and d_free()

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

diff --git a/fs/dcache.c b/fs/dcache.c
index 494a9de..9b15c5c 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -246,23 +246,6 @@ static void __d_free(struct rcu_head *head)
        kmem_cache_free(dentry_cache, dentry); 
 }
 
-/*
- * no locks, please.
- */
-static void d_free(struct dentry *dentry)
-{
-       BUG_ON((int)dentry->d_lockref.count > 0);
-       this_cpu_dec(nr_dentry);
-       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_rcuwalk_barrier - invalidate in-progress rcu-walk lookups
  * @dentry: the target dentry
@@ -419,40 +402,6 @@ static void dentry_lru_del(struct dentry *dentry)
        }
 }
 
-/**
- * d_kill - kill dentry and return parent
- * @dentry: dentry to kill
- * @parent: parent dentry
- *
- * The dentry must already be unhashed and removed from the LRU.
- *
- * If this is the root of the dentry tree, return NULL.
- *
- * dentry->d_lock and parent->d_lock must be held by caller, and are dropped by
- * d_kill.
- */
-static struct dentry *d_kill(struct dentry *dentry, struct dentry *parent)
-       __releases(dentry->d_lock)
-       __releases(parent->d_lock)
-       __releases(dentry->d_inode->i_lock)
-{
-       list_del(&dentry->d_u.d_child);
-       /*
-        * Inform d_walk() that we are no longer attached to the
-        * dentry tree
-        */
-       dentry->d_flags |= DCACHE_DENTRY_KILLED;
-       if (parent)
-               spin_unlock(&parent->d_lock);
-       dentry_iput(dentry);
-       /*
-        * dentry_iput drops the locks, at which point nobody (except
-        * transient RCU lookups) can reach this dentry.
-        */
-       d_free(dentry);
-       return parent;
-}
-
 /**
  * d_drop - drop a dentry
  * @dentry: dentry to drop
@@ -546,7 +495,30 @@ relock:
        dentry_lru_del(dentry);
        /* if it was on the hash then remove it */
        __d_drop(dentry);
-       return d_kill(dentry, parent);
+       list_del(&dentry->d_u.d_child);
+       /*
+        * Inform d_walk() that we are no longer attached to the
+        * dentry tree
+        */
+       dentry->d_flags |= DCACHE_DENTRY_KILLED;
+       if (parent)
+               spin_unlock(&parent->d_lock);
+       dentry_iput(dentry);
+       /*
+        * dentry_iput drops the locks, at which point nobody (except
+        * transient RCU lookups) can reach this dentry.
+        */
+       BUG_ON((int)dentry->d_lockref.count > 0);
+       this_cpu_dec(nr_dentry);
+       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);
+       return parent;
 }
 
 /*