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authorTrond Myklebust <Trond.Myklebust@netapp.com>2009-08-09 15:14:29 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2009-08-09 15:14:29 -0400
commitbc74b4f5e63a09fb78e245794a0de1e5a2716bbe (patch)
tree5e96e63fd69303162456549f12bff5f9b2ee2a22 /include
parentda77005f0d64486cd760f43d9b7cc2379262a363 (diff)
SUNRPC: Allow the cache_detail to specify alternative upcall mechanisms
For events that are rare, such as referral DNS lookups, it makes limited sense to have a daemon constantly listening for upcalls on a channel. An alternative in those cases might simply be to run the app that fills the cache using call_usermodehelper_exec() and friends. The following patch allows the cache_detail to specify alternative upcall mechanisms for these particular cases. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sunrpc/cache.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 3d1fad22185..23ee25981a0 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -70,9 +70,9 @@ struct cache_detail {
char *name;
void (*cache_put)(struct kref *);
- void (*cache_request)(struct cache_detail *cd,
- struct cache_head *h,
- char **bpp, int *blen);
+ int (*cache_upcall)(struct cache_detail *,
+ struct cache_head *);
+
int (*cache_parse)(struct cache_detail *,
char *buf, int len);
@@ -135,6 +135,13 @@ extern struct cache_head *
sunrpc_cache_update(struct cache_detail *detail,
struct cache_head *new, struct cache_head *old, int hash);
+extern int
+sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h,
+ void (*cache_request)(struct cache_detail *,
+ struct cache_head *,
+ char **,
+ int *));
+
extern void cache_clean_deferred(void *owner);