FS-Cache: Add counters for entry/exit to/from cache operation functions
Count entries to and exits from cache operation table functions. Maintain
these as a single counter that's added to or removed from as appropriate.
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index 9b51873..432482e 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -249,7 +249,9 @@
/* ask the cache to allocate an object (we may end up with duplicate
* objects at this stage, but we sort that out later) */
+ fscache_stat(&fscache_n_cop_alloc_object);
object = cache->ops->alloc_object(cache, cookie);
+ fscache_stat_d(&fscache_n_cop_alloc_object);
if (IS_ERR(object)) {
fscache_stat(&fscache_n_object_no_alloc);
ret = PTR_ERR(object);
@@ -270,8 +272,11 @@
/* only attach if we managed to allocate all we needed, otherwise
* discard the object we just allocated and instead use the one
* attached to the cookie */
- if (fscache_attach_object(cookie, object) < 0)
+ if (fscache_attach_object(cookie, object) < 0) {
+ fscache_stat(&fscache_n_cop_put_object);
cache->ops->put_object(object);
+ fscache_stat_d(&fscache_n_cop_put_object);
+ }
_leave(" = 0");
return 0;
@@ -287,7 +292,9 @@
return 0;
error_put:
+ fscache_stat(&fscache_n_cop_put_object);
cache->ops->put_object(object);
+ fscache_stat_d(&fscache_n_cop_put_object);
error:
_leave(" = %d", ret);
return ret;