-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define CLT_PVEC_SIZE (14)
/**
+ * Possible levels of the nesting. Currently this is 2: there are "top"
+ * entities (files, extent locks), and "sub" entities (stripes and stripe
+ * locks). This is used only for debugging counters right now.
+ */
+enum clt_nesting_level {
+ CNL_TOP,
+ CNL_SUB,
+ CNL_NR
+};
+
+/**
+ * Counters used to check correctness of cl_lock interface usage.
+ */
+struct cl_thread_counters {
+ /**
+ * Number of outstanding calls to cl_lock_mutex_get() made by the
+ * current thread. For debugging.
+ */
+ int ctc_nr_locks_locked;
+ /** List of locked locks. */
+ struct lu_ref ctc_locks_locked;
+ /** Number of outstanding holds on locks. */
+ int ctc_nr_held;
+ /** Number of outstanding uses on locks. */
+ int ctc_nr_used;
+ /** Number of held extent locks. */
+ int ctc_nr_locks_acquired;
+};
+
+/**
* Thread local state internal for generic cl-code.
*/
struct cl_thread_info {
struct cl_lock_descr clt_descr;
struct cl_page_list clt_list;
/**
- * \name debugging.
- *
- * Counters used to check correctness of cl_lock interface usage.
- * @{
- */
- /**
- * Number of outstanding calls to cl_lock_mutex_get() made by the
- * current thread. For debugging.
+ * Counters for every level of lock nesting.
*/
- int clt_nr_locks_locked;
- /** List of locked locks. */
- struct lu_ref clt_locks_locked;
- /** Number of outstanding holds on the top-level locks. */
- int clt_nr_held;
- /** Number of outstanding uses on the top-level locks. */
- int clt_nr_used;
- /** Number of held top-level extent locks. */
- int clt_nr_locks_acquired;
+ struct cl_thread_counters clt_counters[CNL_NR];
/** @} debugging */
/*
* Pointer to the topmost ongoing IO in this thread.
*/
struct cl_io *clt_current_io;
+ /**
+ * Used for submitting a sync io.
+ */
+ struct cl_sync_io clt_anchor;
+ /**
+ * Fields used by cl_lock_discard_pages().
+ */
+ pgoff_t clt_next_index;
+ pgoff_t clt_fn_index; /* first non-overlapped index */
};
struct cl_thread_info *cl_env_info(const struct lu_env *env);
+void cl_page_disown0(const struct lu_env *env,
+ struct cl_io *io, struct cl_page *pg);
+
#endif /* _CL_INTERNAL_H */