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authorStanislav Kinsbursky <skinsbursky@parallels.com>2013-02-04 14:02:50 +0300
committerJ. Bruce Fields <bfields@redhat.com>2013-02-15 10:43:46 -0500
commit2d4383383b0b04ca380b67aa2d7397d0b399dcbf (patch)
treef9e8bddc466c2c8dfdcf039aca4d53752e524fb9 /net/sunrpc/cache.c
parent73fb847a44224d5708550e4be7baba9da75e00af (diff)
downloadlinux-2d4383383b0b04ca380b67aa2d7397d0b399dcbf.tar.bz2
SUNRPC: rework cache upcall logic
For most of SUNRPC caches (except NFS DNS cache) cache_detail->cache_upcall is redundant since all that it's implementations are doing is calling sunrpc_cache_pipe_upcall() with proper function address argument. Cache request function address is now stored on cache_detail structure and thus all the code can be simplified. Now, for those cache details, which doesn't have cache_upcall callback (the only one, which still has is nfs_dns_resolve_template) sunrpc_cache_pipe_upcall will be called instead. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc/cache.c')
-rw-r--r--net/sunrpc/cache.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 9f8470353362..51853d8ed0bc 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -196,9 +196,9 @@ EXPORT_SYMBOL_GPL(sunrpc_cache_update);
static int cache_make_upcall(struct cache_detail *cd, struct cache_head *h)
{
- if (!cd->cache_upcall)
- return -EINVAL;
- return cd->cache_upcall(cd, h);
+ if (cd->cache_upcall)
+ return cd->cache_upcall(cd, h);
+ return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
}
static inline int cache_is_valid(struct cache_detail *detail, struct cache_head *h)
@@ -1152,6 +1152,9 @@ int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h,
char *bp;
int len;
+ if (!detail->cache_request)
+ return -EINVAL;
+
if (!cache_listeners_exist(detail)) {
warn_no_listener(detail);
return -EINVAL;
@@ -1605,7 +1608,7 @@ static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)
if (p == NULL)
goto out_nomem;
- if (cd->cache_upcall || cd->cache_parse) {
+ if (cd->cache_request || cd->cache_parse) {
p = proc_create_data("channel", S_IFREG|S_IRUSR|S_IWUSR,
cd->u.procfs.proc_ent,
&cache_file_operations_procfs, cd);