X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flustre_mdc.h;h=094b3509d2aad6ac01064862c2b980aed0b31edd;hb=HEAD;hp=7b43f4febb11e84cc41b408ca6081ea99ade8b94;hpb=c079cd7484d5e7e656eae050003075e30f7f88cc;p=fs%2Flustre-release.git

diff --git a/lustre/include/lustre_mdc.h b/lustre/include/lustre_mdc.h
index 7b43f4f..5202e2a 100644
--- 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.
@@ -10,24 +17,23 @@
 #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 <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_log.h>
 #include <lustre_export.h>
 
 struct ptlrpc_client;
@@ -35,51 +41,54 @@ struct obd_export;
 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