FS-Cache: Out of line fscache_operation_init()

Out of line fscache_operation_init() so that it can access internal FS-Cache
features, such as stats, in a later commit.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Steve Dickson <steved@redhat.com>
Acked-by: Jeff Layton <jeff.layton@primarydata.com>
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index ca3d550..0e26d49 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -119,27 +119,9 @@
 extern void fscache_enqueue_operation(struct fscache_operation *);
 extern void fscache_op_complete(struct fscache_operation *, bool);
 extern void fscache_put_operation(struct fscache_operation *);
-
-/**
- * fscache_operation_init - Do basic initialisation of an operation
- * @op: The operation to initialise
- * @release: The release function to assign
- *
- * Do basic initialisation of an operation.  The caller must still set flags,
- * object and processor if needed.
- */
-static inline void fscache_operation_init(struct fscache_operation *op,
-					fscache_operation_processor_t processor,
-					fscache_operation_release_t release)
-{
-	INIT_WORK(&op->work, fscache_op_work_func);
-	atomic_set(&op->usage, 1);
-	op->state = FSCACHE_OP_ST_INITIALISED;
-	op->debug_id = atomic_inc_return(&fscache_op_debug_id);
-	op->processor = processor;
-	op->release = release;
-	INIT_LIST_HEAD(&op->pend_link);
-}
+extern void fscache_operation_init(struct fscache_operation *,
+				   fscache_operation_processor_t,
+				   fscache_operation_release_t);
 
 /*
  * data read operation