autofs4: clean ->d_release() and autofs4_free_ino() up

The latter is called only when both ino and dentry are about to
be freed, so cleaning ->d_fsdata and ->dentry is pointless.

Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 16 insertions, 19 deletions

diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index bfa0c6e542f2..54f923792728 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -338,5 +338,4 @@ static inline void autofs4_del_expiring(struct dentry *dentry)
         return;
 }
 
-void autofs4_dentry_release(struct dentry *);
 extern void autofs4_kill_sb(struct super_block *);
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 0df0c7c46fa2..180fa2425e49 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -43,10 +43,6 @@ void autofs4_clean_ino(struct autofs_info *ino)
 
 void autofs4_free_ino(struct autofs_info *ino)
 {
-        if (ino->dentry) {
-                ino->dentry->d_fsdata = NULL;
-                ino->dentry = NULL;
-        }
         kfree(ino);
 }
 
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index f7c97c084c1f..014e7aba3b08 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -37,6 +37,7 @@ static int autofs4_dir_open(struct inode *inode, struct file *file);
 static struct dentry *autofs4_lookup(struct inode *,struct dentry *, struct nameidata *);
 static struct vfsmount *autofs4_d_automount(struct path *);
 static int autofs4_d_manage(struct dentry *, bool, bool);
+static void autofs4_dentry_release(struct dentry *);
 
 const struct file_operations autofs4_root_operations = {
         .open           = dcache_dir_open,
@@ -138,25 +139,26 @@ out:
         return dcache_dir_open(inode, file);
 }
 
-void autofs4_dentry_release(struct dentry *de)
+static void autofs4_dentry_release(struct dentry *de)
 {
-        struct autofs_info *inf;
+        struct autofs_info *ino = autofs4_dentry_ino(de);
+        struct autofs_sb_info *sbi = autofs4_sbi(de->d_sb);
 
         DPRINTK("releasing %p", de);
 
-        inf = autofs4_dentry_ino(de);
-        if (inf) {
-                struct autofs_sb_info *sbi = autofs4_sbi(de->d_sb);
-                if (sbi) {
-                        spin_lock(&sbi->lookup_lock);
-                        if (!list_empty(&inf->active))
-                                list_del(&inf->active);
-                        if (!list_empty(&inf->expiring))
-                                list_del(&inf->expiring);
-                        spin_unlock(&sbi->lookup_lock);
-                }
-                autofs4_free_ino(inf);
+        if (!ino)
+                return;
+
+        if (sbi) {
+                spin_lock(&sbi->lookup_lock);
+                if (!list_empty(&ino->active))
+                        list_del(&ino->active);
+                if (!list_empty(&ino->expiring))
+                        list_del(&ino->expiring);
+                spin_unlock(&sbi->lookup_lock);
         }
+
+        autofs4_free_ino(ino);
 }
 
 static struct dentry *autofs4_lookup_active(struct dentry *dentry)