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rhashtable: Add parent argument to mutex_is_held

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Currently mutex_is_held can only test locks in the that are global
since it takes no arguments.  This prevents rhashtable from being
used in places where locks are lock, e.g., per-namespace locks.

This patch adds a parent field to mutex_is_held and rhashtable_params
so that local locks can be used (and tested).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu
2014-11-13 18:11:22 +08:00
committed by David S. Miller
parent 1b2f309d70
commit 7b4ce23534
4 changed files with 6 additions and 5 deletions
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lib/rhashtable.c
+2 -2
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@@ -32,7 +32,7 @@
#ifdef CONFIG_PROVE_LOCKING
int lockdep_rht_mutex_is_held(const struct rhashtable *ht)
{
return ht->p.mutex_is_held();
return ht->p.mutex_is_held(ht->p.parent);
}
EXPORT_SYMBOL_GPL(lockdep_rht_mutex_is_held);
#endif
@@ -618,7 +618,7 @@ EXPORT_SYMBOL_GPL(rhashtable_destroy);
#define TEST_NEXPANDS 4
#ifdef CONFIG_PROVE_LOCKING
static int test_mutex_is_held(void)
static int test_mutex_is_held(void *parent)
{
return 1;
}