kill pin_put()

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

1 files changed, 10 insertions, 4 deletions

diff --git a/kernel/acct.c b/kernel/acct.c
index 33738ef972f3..7bb9e659a7da 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -124,6 +124,12 @@ out:
         return acct->active;
 }
 
+static void acct_put(struct bsd_acct_struct *p)
+{
+        if (atomic_long_dec_and_test(&p->pin.count))
+                kfree_rcu(p, pin.rcu);
+}
+
 static struct bsd_acct_struct *acct_get(struct pid_namespace *ns)
 {
         struct bsd_acct_struct *res;
@@ -144,7 +150,7 @@ again:
         mutex_lock(&res->lock);
         if (!res->ns) {
                 mutex_unlock(&res->lock);
-                pin_put(&res->pin);
+                acct_put(res);
                 goto again;
         }
         return res;
@@ -175,7 +181,7 @@ static void acct_kill(struct bsd_acct_struct *acct,
                 acct->ns = NULL;
                 atomic_long_dec(&acct->pin.count);
                 mutex_unlock(&acct->lock);
-                pin_put(&acct->pin);
+                acct_put(acct);
         }
 }
 
@@ -186,7 +192,7 @@ static void acct_pin_kill(struct fs_pin *pin)
         mutex_lock(&acct->lock);
         if (!acct->ns) {
                 mutex_unlock(&acct->lock);
-                pin_put(pin);
+                acct_put(acct);
                 acct = NULL;
         }
         acct_kill(acct, NULL);
@@ -576,7 +582,7 @@ static void slow_acct_process(struct pid_namespace *ns)
                 if (acct) {
                         do_acct_process(acct);
                         mutex_unlock(&acct->lock);
-                        pin_put(&acct->pin);
+                        acct_put(acct);
                 }
         }
 }