[NETFILTER] x_table.c: sem2mutex

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netfilter/x_tables.c

@@ -21,10 +21,12 @@
 #include <linux/seq_file.h>
 #include <linux/string.h>
 #include <linux/vmalloc.h>
+#include <linux/mutex.h>
 
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter_arp.h>
 
+
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
 MODULE_DESCRIPTION("[ip,ip6,arp]_tables backend module");
@@ -32,7 +34,7 @@ MODULE_DESCRIPTION("[ip,ip6,arp]_tables backend module");
 #define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1))
 
 struct xt_af {
-	struct semaphore mutex;
+	struct mutex mutex;
 	struct list_head match;
 	struct list_head target;
 	struct list_head tables;
@@ -64,11 +66,11 @@ xt_register_target(struct xt_target *target)
 {
 	int ret, af = target->family;
 
-	ret = down_interruptible(&xt[af].mutex);
+	ret = mutex_lock_interruptible(&xt[af].mutex);
 	if (ret != 0)
 		return ret;
 	list_add(&target->list, &xt[af].target);
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 	return ret;
 }
 EXPORT_SYMBOL(xt_register_target);
@@ -78,9 +80,9 @@ xt_unregister_target(struct xt_target *target)
 {
 	int af = target->family;
 
-	down(&xt[af].mutex);
+	mutex_lock(&xt[af].mutex);
 	LIST_DELETE(&xt[af].target, target);
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 }
 EXPORT_SYMBOL(xt_unregister_target);
 
@@ -89,12 +91,12 @@ xt_register_match(struct xt_match *match)
 {
 	int ret, af = match->family;
 
-	ret = down_interruptible(&xt[af].mutex);
+	ret = mutex_lock_interruptible(&xt[af].mutex);
 	if (ret != 0)
 		return ret;
 
 	list_add(&match->list, &xt[af].match);
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 
 	return ret;
 }
@@ -105,9 +107,9 @@ xt_unregister_match(struct xt_match *match)
 {
 	int af =  match->family;
 
-	down(&xt[af].mutex);
+	mutex_lock(&xt[af].mutex);
 	LIST_DELETE(&xt[af].match, match);
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 }
 EXPORT_SYMBOL(xt_unregister_match);
 
@@ -124,21 +126,21 @@ struct xt_match *xt_find_match(int af, const char *name, u8 revision)
 	struct xt_match *m;
 	int err = 0;
 
-	if (down_interruptible(&xt[af].mutex) != 0)
+	if (mutex_lock_interruptible(&xt[af].mutex) != 0)
 		return ERR_PTR(-EINTR);
 
 	list_for_each_entry(m, &xt[af].match, list) {
 		if (strcmp(m->name, name) == 0) {
 			if (m->revision == revision) {
 				if (try_module_get(m->me)) {
-					up(&xt[af].mutex);
+					mutex_unlock(&xt[af].mutex);
 					return m;
 				}
 			} else
 				err = -EPROTOTYPE; /* Found something. */
 		}
 	}
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL(xt_find_match);
@@ -149,21 +151,21 @@ struct xt_target *xt_find_target(int af, const char *name, u8 revision)
 	struct xt_target *t;
 	int err = 0;
 
-	if (down_interruptible(&xt[af].mutex) != 0)
+	if (mutex_lock_interruptible(&xt[af].mutex) != 0)
 		return ERR_PTR(-EINTR);
 
 	list_for_each_entry(t, &xt[af].target, list) {
 		if (strcmp(t->name, name) == 0) {
 			if (t->revision == revision) {
 				if (try_module_get(t->me)) {
-					up(&xt[af].mutex);
+					mutex_unlock(&xt[af].mutex);
 					return t;
 				}
 			} else
 				err = -EPROTOTYPE; /* Found something. */
 		}
 	}
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL(xt_find_target);
@@ -218,7 +220,7 @@ int xt_find_revision(int af, const char *name, u8 revision, int target,
 {
 	int have_rev, best = -1;
 
-	if (down_interruptible(&xt[af].mutex) != 0) {
+	if (mutex_lock_interruptible(&xt[af].mutex) != 0) {
 		*err = -EINTR;
 		return 1;
 	}
@@ -226,7 +228,7 @@ int xt_find_revision(int af, const char *name, u8 revision, int target,
 		have_rev = target_revfn(af, name, revision, &best);
 	else
 		have_rev = match_revfn(af, name, revision, &best);
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 
 	/* Nothing at all?  Return 0 to try loading module. */
 	if (best == -1) {
@@ -352,20 +354,20 @@ struct xt_table *xt_find_table_lock(int af, const char *name)
 {
 	struct xt_table *t;
 
-	if (down_interruptible(&xt[af].mutex) != 0)
+	if (mutex_lock_interruptible(&xt[af].mutex) != 0)
 		return ERR_PTR(-EINTR);
 
 	list_for_each_entry(t, &xt[af].tables, list)
 		if (strcmp(t->name, name) == 0 && try_module_get(t->me))
 			return t;
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 	return NULL;
 }
 EXPORT_SYMBOL_GPL(xt_find_table_lock);
 
 void xt_table_unlock(struct xt_table *table)
 {
-	up(&xt[table->af].mutex);
+	mutex_unlock(&xt[table->af].mutex);
 }
 EXPORT_SYMBOL_GPL(xt_table_unlock);
 
@@ -405,7 +407,7 @@ int xt_register_table(struct xt_table *table,
 	int ret;
 	struct xt_table_info *private;
 
-	ret = down_interruptible(&xt[table->af].mutex);
+	ret = mutex_lock_interruptible(&xt[table->af].mutex);
 	if (ret != 0)
 		return ret;
 
@@ -431,7 +433,7 @@ int xt_register_table(struct xt_table *table,
 
 	ret = 0;
  unlock:
-	up(&xt[table->af].mutex);
+	mutex_unlock(&xt[table->af].mutex);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(xt_register_table);
@@ -440,10 +442,10 @@ void *xt_unregister_table(struct xt_table *table)
 {
 	struct xt_table_info *private;
 
-	down(&xt[table->af].mutex);
+	mutex_lock(&xt[table->af].mutex);
 	private = table->private;
 	LIST_DELETE(&xt[table->af].tables, table);
-	up(&xt[table->af].mutex);
+	mutex_unlock(&xt[table->af].mutex);
 
 	return private;
 }
@@ -507,7 +509,7 @@ static void *xt_tgt_seq_start(struct seq_file *seq, loff_t *pos)
 	if (!list)
 		return NULL;
 
-	if (down_interruptible(&xt[af].mutex) != 0)
+	if (mutex_lock_interruptible(&xt[af].mutex) != 0)
 		return NULL;
 	
 	return xt_get_idx(list, seq, *pos);
@@ -536,7 +538,7 @@ static void xt_tgt_seq_stop(struct seq_file *seq, void *v)
 	struct proc_dir_entry *pde = seq->private;
 	u_int16_t af = (unsigned long)pde->data & 0xffff;
 
-	up(&xt[af].mutex);
+	mutex_unlock(&xt[af].mutex);
 }
 
 static int xt_name_seq_show(struct seq_file *seq, void *v)
@@ -668,7 +670,7 @@ static int __init xt_init(void)
 		return -ENOMEM;
 
 	for (i = 0; i < NPROTO; i++) {
-		init_MUTEX(&xt[i].mutex);
+		mutex_init(&xt[i].mutex);
 		INIT_LIST_HEAD(&xt[i].target);
 		INIT_LIST_HEAD(&xt[i].match);
 		INIT_LIST_HEAD(&xt[i].tables);