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batman-adv: Initialize lockdep class keys for hashes 

Different hashes have the same class key because they get
initialised with the same one. For this reason lockdep can create
false warning when they are used recursively.

Re-initialise the key for each hash after the invocation to hash_new()
to avoid this problem.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Tested-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Antonio Quartulli 2012-11-10 11:00:32 +01:00
parent 8425ec6aea
commit dec05074b1
3 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/batman-adv/originator.c
View File

@ -29,6 +29,9 @@
#include "soft-interface.h"
#include "bridge_loop_avoidance.h"
/* hash class keys */
static struct lock_class_key batadv_orig_hash_lock_class_key;
static void batadv_purge_orig(struct work_struct *work);
static void batadv_start_purge_timer(struct batadv_priv *bat_priv)
@ -57,6 +60,9 @@ int batadv_originator_init(struct batadv_priv *bat_priv)
if (!bat_priv->orig_hash)
goto err;
batadv_hash_set_lock_class(bat_priv->orig_hash,
&batadv_orig_hash_lock_class_key);
batadv_start_purge_timer(bat_priv);
return 0;

10
net/batman-adv/translation-table.c
View File

@ -29,6 +29,10 @@
#include <linux/crc16.h>
/* hash class keys */
static struct lock_class_key batadv_tt_local_hash_lock_class_key;
static struct lock_class_key batadv_tt_global_hash_lock_class_key;
static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
struct batadv_orig_node *orig_node);
static void batadv_tt_purge(struct work_struct *work);
@ -235,6 +239,9 @@ static int batadv_tt_local_init(struct batadv_priv *bat_priv)
if (!bat_priv->tt.local_hash)
return -ENOMEM;
batadv_hash_set_lock_class(bat_priv->tt.local_hash,
&batadv_tt_local_hash_lock_class_key);
return 0;
}
@ -694,6 +701,9 @@ static int batadv_tt_global_init(struct batadv_priv *bat_priv)
if (!bat_priv->tt.global_hash)
return -ENOMEM;
batadv_hash_set_lock_class(bat_priv->tt.global_hash,
&batadv_tt_global_hash_lock_class_key);
return 0;
}

6
net/batman-adv/vis.c
View File

@ -28,6 +28,9 @@
#define BATADV_MAX_VIS_PACKET_SIZE 1000
/* hash class keys */
static struct lock_class_key batadv_vis_hash_lock_class_key;
static void batadv_start_vis_timer(struct batadv_priv *bat_priv);
/* free the info */
@ -852,6 +855,9 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
goto err;
}
batadv_hash_set_lock_class(bat_priv->vis.hash,
&batadv_vis_hash_lock_class_key);
bat_priv->vis.my_info = kmalloc(BATADV_MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
if (!bat_priv->vis.my_info)
goto err;