unfuck proc_sysctl ->d_compare()

[linux-flexiantxendom0-natty.git] / fs / proc / inode.c

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 176ce4c..d6a7ca1 100644 (file)
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -27,6 +27,7 @@
 static void proc_evict_inode(struct inode *inode)
 {
        struct proc_dir_entry *de;
+       struct ctl_table_header *head;
 
        truncate_inode_pages(&inode->i_data, 0);
        end_writeback(inode);
@@ -38,8 +39,11 @@ static void proc_evict_inode(struct inode *inode)
        de = PROC_I(inode)->pde;
        if (de)
                pde_put(de);
-       if (PROC_I(inode)->sysctl)
-               sysctl_head_put(PROC_I(inode)->sysctl);
+       head = PROC_I(inode)->sysctl;
+       if (head) {
+               rcu_assign_pointer(PROC_I(inode)->sysctl, NULL);
+               sysctl_head_put(head);
+       }
 }
 
 struct vfsmount *proc_mnt;