summaryrefslogtreecommitdiff
path: root/net/9p/util.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/9p/util.c')
-rw-r--r--net/9p/util.c36
1 files changed, 28 insertions, 8 deletions
diff --git a/net/9p/util.c b/net/9p/util.c
index ef7215565d8..958fc58cd1f 100644
--- a/net/9p/util.c
+++ b/net/9p/util.c
@@ -32,11 +32,23 @@
#include <linux/idr.h>
#include <net/9p/9p.h>
+/**
+ * struct p9_idpool - per-connection accounting for tag idpool
+ * @lock: protects the pool
+ * @pool: idr to allocate tag id from
+ *
+ */
+
struct p9_idpool {
spinlock_t lock;
struct idr pool;
};
+/**
+ * p9_idpool_create - create a new per-connection id pool
+ *
+ */
+
struct p9_idpool *p9_idpool_create(void)
{
struct p9_idpool *p;
@@ -52,6 +64,11 @@ struct p9_idpool *p9_idpool_create(void)
}
EXPORT_SYMBOL(p9_idpool_create);
+/**
+ * p9_idpool_destroy - create a new per-connection id pool
+ * @p: idpool to destory
+ */
+
void p9_idpool_destroy(struct p9_idpool *p)
{
idr_destroy(&p->pool);
@@ -61,9 +78,9 @@ EXPORT_SYMBOL(p9_idpool_destroy);
/**
* p9_idpool_get - allocate numeric id from pool
- * @p - pool to allocate from
+ * @p: pool to allocate from
*
- * XXX - This seems to be an awful generic function, should it be in idr.c with
+ * Bugs: This seems to be an awful generic function, should it be in idr.c with
* the lock included in struct idr?
*/
@@ -71,7 +88,7 @@ int p9_idpool_get(struct p9_idpool *p)
{
int i = 0;
int error;
- unsigned int flags;
+ unsigned long flags;
retry:
if (idr_pre_get(&p->pool, GFP_KERNEL) == 0)
@@ -94,15 +111,16 @@ EXPORT_SYMBOL(p9_idpool_get);
/**
* p9_idpool_put - release numeric id from pool
- * @p - pool to allocate from
+ * @id: numeric id which is being released
+ * @p: pool to release id into
*
- * XXX - This seems to be an awful generic function, should it be in idr.c with
+ * Bugs: This seems to be an awful generic function, should it be in idr.c with
* the lock included in struct idr?
*/
void p9_idpool_put(int id, struct p9_idpool *p)
{
- unsigned int flags;
+ unsigned long flags;
spin_lock_irqsave(&p->lock, flags);
idr_remove(&p->pool, id);
spin_unlock_irqrestore(&p->lock, flags);
@@ -111,11 +129,13 @@ EXPORT_SYMBOL(p9_idpool_put);
/**
* p9_idpool_check - check if the specified id is available
- * @id - id to check
- * @p - pool
+ * @id: id to check
+ * @p: pool to check
*/
+
int p9_idpool_check(int id, struct p9_idpool *p)
{
return idr_find(&p->pool, id) != NULL;
}
EXPORT_SYMBOL(p9_idpool_check);
+