LU-14499 lnet: Revert "LU-13368 lnet: discard the callback"

[fs/lustre-release.git] / lustre / include / lustre_mdc.h

diff --git a/lustre/include/lustre_mdc.h b/lustre/include/lustre_mdc.h
index 7b43f4f..5202e2a 100644 (file)
--- a/lustre/include/lustre_mdc.h
+++ b/lustre/include/lustre_mdc.h
@@ -1,7 +1,14 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.

  *
  *

- *   This file is part of Lustre, http://www.lustre.org
+ * Copyright (c) 2011, 2014, Intel Corporation.
+ */
+
+/*
+ * This file is part of Lustre, http://www.lustre.org/

  *
  * MDS data structures.
  * See also lustre_idl.h for wire formats of requests.
  *
  * MDS data structures.
  * See also lustre_idl.h for wire formats of requests.


@@ -10,24 +17,23 @@
 #ifndef _LUSTRE_MDC_H
 #define _LUSTRE_MDC_H
 
 #ifndef _LUSTRE_MDC_H
 #define _LUSTRE_MDC_H
 

-#ifdef __KERNEL__
-# include <linux/fs.h>
-# include <linux/dcache.h>
-# ifdef CONFIG_FS_POSIX_ACL
-#  ifdef HAVE_XATTR_ACL
-#   include <linux/xattr_acl.h>
-#  endif
-#  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
-#   include <linux/posix_acl_xattr.h>
-#  endif
-# endif
-#endif
+/** \defgroup mdc mdc
+ *
+ * @{
+ */
+
+#include <linux/fs.h>
+#include <linux/dcache.h>
+#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
+# include <lustre_compat.h>
+#endif /* CONFIG_LUSTRE_FS_POSIX_ACL */

 #include <lustre_handles.h>
 #include <lustre_handles.h>

-#include <libcfs/kp30.h>
-#include <lustre/lustre_idl.h>
+#include <lustre_intent.h>
+#include <libcfs/libcfs.h>
+#include <obd_class.h>
+#include <uapi/linux/lustre/lustre_idl.h>

 #include <lustre_lib.h>
 #include <lustre_dlm.h>
 #include <lustre_lib.h>
 #include <lustre_dlm.h>

-#include <lustre_log.h>

 #include <lustre_export.h>
 
 struct ptlrpc_client;
 #include <lustre_export.h>
 
 struct ptlrpc_client;


@@ -35,51 +41,54 @@ struct obd_export;
 struct ptlrpc_request;
 struct obd_device;
 
 struct ptlrpc_request;
 struct obd_device;
 

-struct mdc_rpc_lock {
-        struct semaphore rpcl_sem;
-        struct lookup_intent *rpcl_it;
-};
-
-static inline void mdc_init_rpc_lock(struct mdc_rpc_lock *lck)
+/**
+ * Update the maximum possible easize.
+ *
+ * This value is learned from ptlrpc replies sent by the MDT.  The
+ * default easize is initialized to the minimum value but allowed to
+ * grow up to a single page in size if required to handle the common
+ * case.
+ *
+ * \see client_obd::cl_default_mds_easize
+ *
+ * \param[in] exp      export for MDC device
+ * \param[in] body     body of ptlrpc reply from MDT
+ *
+ */
+static inline void mdc_update_max_ea_from_body(struct obd_export *exp,
+                                              struct mdt_body *body)

 {
 {

-        sema_init(&lck->rpcl_sem, 1);
-        lck->rpcl_it = NULL;
+       if (body->mbo_valid & OBD_MD_FLMODEASIZE) {
+               struct client_obd *cli = &exp->exp_obd->u.cli;
+               __u32 def_easize;
+
+               if (cli->cl_max_mds_easize < body->mbo_max_mdsize)
+                       cli->cl_max_mds_easize = body->mbo_max_mdsize;
+
+               def_easize = min_t(__u32, body->mbo_max_mdsize,
+                                  OBD_MAX_DEFAULT_EA_SIZE);
+               cli->cl_default_mds_easize = def_easize;
+       }

 }
 
 }
 

-static inline void mdc_get_rpc_lock(struct mdc_rpc_lock *lck,
-                                    struct lookup_intent *it)
+
+/* mdc/mdc_locks.c */
+int it_open_error(int phase, struct lookup_intent *it);
+
+static inline bool cl_is_lov_delay_create(unsigned int flags)

 {
 {

-        ENTRY;
-        if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) {
-                down(&lck->rpcl_sem);
-                LASSERT(lck->rpcl_it == NULL);
-                lck->rpcl_it = it;
-        }
+       return  (flags & O_LOV_DELAY_CREATE_1_8) != 0 ||
+               (flags & O_LOV_DELAY_CREATE_MASK) == O_LOV_DELAY_CREATE_MASK;

 }
 
 }
 

-static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck,
-                                    struct lookup_intent *it)
+static inline void cl_lov_delay_create_clear(unsigned int *flags)

 {
 {

-        if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) {
-                LASSERT(it == lck->rpcl_it);
-                lck->rpcl_it = NULL;
-                up(&lck->rpcl_sem);
-        }
-        EXIT;
+       if ((*flags & O_LOV_DELAY_CREATE_1_8) != 0)
+               *flags &= ~O_LOV_DELAY_CREATE_1_8;
+       if ((*flags & O_LOV_DELAY_CREATE_MASK) == O_LOV_DELAY_CREATE_MASK)
+               *flags &= ~O_LOV_DELAY_CREATE_MASK;

 }
 
 }
 

-struct mdc_cache_waiter {       
-        struct list_head        mcw_entry;
-        wait_queue_head_t       mcw_waitq;
-};
+/** @} mdc */

 
 

-/* mdc/mdc_locks.c */
-int it_disposition(struct lookup_intent *it, int flag);
-void it_clear_disposition(struct lookup_intent *it, int flag);
-void it_set_disposition(struct lookup_intent *it, int flag);
-int it_open_error(int phase, struct lookup_intent *it);
-#ifdef HAVE_SPLIT_SUPPORT
-int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
-                 const struct page *page, int offset);
-#endif

 #endif
 #endif