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/cache.c b/fs/fscache/cache.c
index 724384e..6a3c48a 100644
--- a/fs/fscache/cache.c
+++ b/fs/fscache/cache.c
@@ -381,11 +381,15 @@
/* make sure all pages pinned by operations on behalf of the netfs are
* written to disk */
+ fscache_stat(&fscache_n_cop_sync_cache);
cache->ops->sync_cache(cache);
+ fscache_stat_d(&fscache_n_cop_sync_cache);
/* dissociate all the netfs pages backed by this cache from the block
* mappings in the cache */
+ fscache_stat(&fscache_n_cop_dissociate_pages);
cache->ops->dissociate_pages(cache);
+ fscache_stat_d(&fscache_n_cop_dissociate_pages);
/* we now have to destroy all the active objects pertaining to this
* cache - which we do by passing them off to thread pool to be