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-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 ef7215565d88..958fc58cd1ff 100644
--- a/net/9p/util.c
+++ b/net/9p/util.c
@@ -32,11 +32,23 @@
32#include <linux/idr.h> 32#include <linux/idr.h>
33#include <net/9p/9p.h> 33#include <net/9p/9p.h>
34 34
35/**
36 * struct p9_idpool - per-connection accounting for tag idpool
37 * @lock: protects the pool
38 * @pool: idr to allocate tag id from
39 *
40 */
41
35struct p9_idpool { 42struct p9_idpool {
36 spinlock_t lock; 43 spinlock_t lock;
37 struct idr pool; 44 struct idr pool;
38}; 45};
39 46
47/**
48 * p9_idpool_create - create a new per-connection id pool
49 *
50 */
51
40struct p9_idpool *p9_idpool_create(void) 52struct p9_idpool *p9_idpool_create(void)
41{ 53{
42 struct p9_idpool *p; 54 struct p9_idpool *p;
@@ -52,6 +64,11 @@ struct p9_idpool *p9_idpool_create(void)
52} 64}
53EXPORT_SYMBOL(p9_idpool_create); 65EXPORT_SYMBOL(p9_idpool_create);
54 66
67/**
68 * p9_idpool_destroy - create a new per-connection id pool
69 * @p: idpool to destory
70 */
71
55void p9_idpool_destroy(struct p9_idpool *p) 72void p9_idpool_destroy(struct p9_idpool *p)
56{ 73{
57 idr_destroy(&p->pool); 74 idr_destroy(&p->pool);
@@ -61,9 +78,9 @@ EXPORT_SYMBOL(p9_idpool_destroy);
61 78
62/** 79/**
63 * p9_idpool_get - allocate numeric id from pool 80 * p9_idpool_get - allocate numeric id from pool
64 * @p - pool to allocate from 81 * @p: pool to allocate from
65 * 82 *
66 * XXX - This seems to be an awful generic function, should it be in idr.c with 83 * Bugs: This seems to be an awful generic function, should it be in idr.c with
67 * the lock included in struct idr? 84 * the lock included in struct idr?
68 */ 85 */
69 86
@@ -71,7 +88,7 @@ int p9_idpool_get(struct p9_idpool *p)
71{ 88{
72 int i = 0; 89 int i = 0;
73 int error; 90 int error;
74 unsigned int flags; 91 unsigned long flags;
75 92
76retry: 93retry:
77 if (idr_pre_get(&p->pool, GFP_KERNEL) == 0) 94 if (idr_pre_get(&p->pool, GFP_KERNEL) == 0)
@@ -94,15 +111,16 @@ EXPORT_SYMBOL(p9_idpool_get);
94 111
95/** 112/**
96 * p9_idpool_put - release numeric id from pool 113 * p9_idpool_put - release numeric id from pool
97 * @p - pool to allocate from 114 * @id: numeric id which is being released
115 * @p: pool to release id into
98 * 116 *
99 * XXX - This seems to be an awful generic function, should it be in idr.c with 117 * Bugs: This seems to be an awful generic function, should it be in idr.c with
100 * the lock included in struct idr? 118 * the lock included in struct idr?
101 */ 119 */
102 120
103void p9_idpool_put(int id, struct p9_idpool *p) 121void p9_idpool_put(int id, struct p9_idpool *p)
104{ 122{
105 unsigned int flags; 123 unsigned long flags;
106 spin_lock_irqsave(&p->lock, flags); 124 spin_lock_irqsave(&p->lock, flags);
107 idr_remove(&p->pool, id); 125 idr_remove(&p->pool, id);
108 spin_unlock_irqrestore(&p->lock, flags); 126 spin_unlock_irqrestore(&p->lock, flags);
@@ -111,11 +129,13 @@ EXPORT_SYMBOL(p9_idpool_put);
111 129
112/** 130/**
113 * p9_idpool_check - check if the specified id is available 131 * p9_idpool_check - check if the specified id is available
114 * @id - id to check 132 * @id: id to check
115 * @p - pool 133 * @p: pool to check
116 */ 134 */
135
117int p9_idpool_check(int id, struct p9_idpool *p) 136int p9_idpool_check(int id, struct p9_idpool *p)
118{ 137{
119 return idr_find(&p->pool, id) != NULL; 138 return idr_find(&p->pool, id) != NULL;
120} 139}
121EXPORT_SYMBOL(p9_idpool_check); 140EXPORT_SYMBOL(p9_idpool_check);
141