sysfs: Implement sysfs_delete_link

[safe/jmp/linux-2.6] / fs / sysfs / symlink.c

diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index b6ebdaa..f71246b 100644 (file)
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -109,6 +109,26 @@ int sysfs_create_link_nowarn(struct kobject *kobj, struct kobject *target,
 }
 
 /**
+ *     sysfs_delete_link - remove symlink in object's directory.
+ *     @kobj:  object we're acting for.
+ *     @targ:  object we're pointing to.
+ *     @name:  name of the symlink to remove.
+ *
+ *     Unlike sysfs_remove_link sysfs_delete_link has enough information
+ *     to successfully delete symlinks in tagged directories.
+ */
+void sysfs_delete_link(struct kobject *kobj, struct kobject *targ,
+                       const char *name)
+{
+       const void *ns = NULL;
+       spin_lock(&sysfs_assoc_lock);
+       if (targ->sd)
+               ns = targ->sd->s_ns;
+       spin_unlock(&sysfs_assoc_lock);
+       sysfs_hash_and_remove(kobj->sd, ns, name);
+}
+
+/**
  *     sysfs_remove_link - remove symlink in object's directory.
  *     @kobj:  object we're acting for.
  *     @name:  name of the symlink to remove.