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-rw-r--r--include/linux/fscache.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/fscache.h b/include/linux/fscache.h
index feb3b0e0af4d..9584c094d69f 100644
--- a/include/linux/fscache.h
+++ b/include/linux/fscache.h
@@ -173,6 +173,8 @@ struct fscache_netfs {
* - these are undefined symbols when FS-Cache is not configured and the
* optimiser takes care of not using them
*/
+extern struct fscache_cache_tag *__fscache_lookup_cache_tag(const char *);
+extern void __fscache_release_cache_tag(struct fscache_cache_tag *);
/**
* fscache_register_netfs - Register a filesystem as desiring caching services
@@ -218,7 +220,10 @@ void fscache_unregister_netfs(struct fscache_netfs *netfs)
static inline
struct fscache_cache_tag *fscache_lookup_cache_tag(const char *name)
{
- return NULL;
+ if (fscache_available())
+ return __fscache_lookup_cache_tag(name);
+ else
+ return NULL;
}
/**
@@ -233,6 +238,8 @@ struct fscache_cache_tag *fscache_lookup_cache_tag(const char *name)
static inline
void fscache_release_cache_tag(struct fscache_cache_tag *tag)
{
+ if (fscache_available())
+ __fscache_release_cache_tag(tag);
}
/**