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authorNeilBrown <neilb@suse.de>2006-03-27 01:15:09 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:44:43 -0800
commitbaab935ff3bdac20c558809da0d8e8f761840219 (patch)
treea22c3189505fe8e7ab3820c988ffd771c0b64fa6 /include/linux/sunrpc
parentebd0cb1af3be2729cc1f574681dfba01fcf458d9 (diff)
[PATCH] knfsd: Convert sunrpc_cache to use krefs
.. it makes some of the code nicer. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/sunrpc')
-rw-r--r--include/linux/sunrpc/cache.h13
1 files changed, 6 insertions, 7 deletions
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index a37fead1873..ad3f5cbdb77 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -50,7 +50,7 @@ struct cache_head {
time_t last_refresh; /* If CACHE_PENDING, this is when upcall
* was sent, else this is when update was received
*/
- atomic_t refcnt;
+ struct kref ref;
unsigned long flags;
};
#define CACHE_VALID 0 /* Entry contains valid data */
@@ -68,8 +68,7 @@ struct cache_detail {
atomic_t inuse; /* active user-space update or lookup */
char *name;
- void (*cache_put)(struct cache_head *,
- struct cache_detail*);
+ void (*cache_put)(struct kref *);
void (*cache_request)(struct cache_detail *cd,
struct cache_head *h,
@@ -151,17 +150,17 @@ extern void cache_clean_deferred(void *owner);
static inline struct cache_head *cache_get(struct cache_head *h)
{
- atomic_inc(&h->refcnt);
+ kref_get(&h->ref);
return h;
}
-static inline int cache_put(struct cache_head *h, struct cache_detail *cd)
+static inline void cache_put(struct cache_head *h, struct cache_detail *cd)
{
- if (atomic_read(&h->refcnt) <= 2 &&
+ if (atomic_read(&h->ref.refcount) <= 2 &&
h->expiry_time < cd->nextcheck)
cd->nextcheck = h->expiry_time;
- return atomic_dec_and_test(&h->refcnt);
+ kref_put(&h->ref, cd->cache_put);
}
extern void cache_init(struct cache_head *h);