fs: dcache scale subdirs

[linux-flexiantxendom0-natty.git] / security / selinux / selinuxfs.c

diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 073fd5b..017ec09 100644 (file)
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1146,22 +1146,30 @@ static void sel_remove_entries(struct dentry *de)
        struct list_head *node;
 
        spin_lock(&dcache_lock);
+       spin_lock(&de->d_lock);
        node = de->d_subdirs.next;
        while (node != &de->d_subdirs) {
                struct dentry *d = list_entry(node, struct dentry, d_u.d_child);
+
+               spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
                list_del_init(node);
 
                if (d->d_inode) {
-                       d = dget_locked(d);
+                       dget_locked_dlock(d);
+                       spin_unlock(&de->d_lock);
+                       spin_unlock(&d->d_lock);
                        spin_unlock(&dcache_lock);
                        d_delete(d);
                        simple_unlink(de->d_inode, d);
                        dput(d);
                        spin_lock(&dcache_lock);
-               }
+                       spin_lock(&de->d_lock);
+               } else
+                       spin_unlock(&d->d_lock);
                node = de->d_subdirs.next;
        }
 
+       spin_unlock(&de->d_lock);
        spin_unlock(&dcache_lock);
 }