X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Finclude%2Fmd_object.h;h=72e7719d021a7f2b06c4295d8d5e858b9be1a58b;hp=a4af8b46fdbf76a403f9b546de56a21cf48527c9;hb=8d27c92a66d63aaf8b8fbe1fc73e49263b5bed1e;hpb=aa368474cb4de18361e875ff503a98ba479bc3c6

diff --git a/lustre/include/md_object.h b/lustre/include/md_object.h
index a4af8b4..72e7719 100644
--- a/lustre/include/md_object.h
+++ b/lustre/include/md_object.h
@@ -15,11 +15,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -41,6 +37,10 @@
 #ifndef _LUSTRE_MD_OBJECT_H
 #define _LUSTRE_MD_OBJECT_H
 
+#ifndef HAVE_SERVER_SUPPORT
+# error "client code should not depend on md_object.h"
+#endif /* !HAVE_SERVER_SUPPORT */
+
 /** \defgroup md md
  * Sub-class of lu_object with methods common for "meta-data" objects in MDT
  * stack.
@@ -57,63 +57,24 @@
  * super-class definitions.
  */
 #include <dt_object.h>
-#include <lvfs.h>
-
-/* LU-1051, temperary solution to reduce llog credits */
-#define DECLARE_LLOG_REWRITE  0
-#define DECLARE_LLOG_WRITE    INT_MAX
 
 struct md_device;
 struct md_device_operations;
 struct md_object;
 struct obd_export;
 
-enum {
-        UCRED_INVALID   = -1,
-        UCRED_INIT      = 0,
-        UCRED_OLD       = 1,
-        UCRED_NEW       = 2
-};
-
-enum {
-        MD_CAPAINFO_MAX = 5
-};
-
-/** there are at most 5 fids in one operation, see rename, NOTE the last one
- * is a temporary one used for is_subdir() */
-struct md_capainfo {
-        __u32                   mc_auth;
-        __u32                   mc_padding;
-        struct lu_fid           mc_fid[MD_CAPAINFO_MAX];
-        struct lustre_capa     *mc_capa[MD_CAPAINFO_MAX];
-};
-
-struct md_quota {
-        struct obd_export       *mq_exp;
-};
-
-/**
- * Implemented in mdd/mdd_handler.c.
- *
- * XXX should be moved into separate .h/.c together with all md security
- * related definitions.
- */
-struct md_capainfo *md_capainfo(const struct lu_env *env);
-struct md_quota *md_quota(const struct lu_env *env);
-
 /** metadata attributes */
 enum ma_valid {
-        MA_INODE     = (1 << 0),
-        MA_LOV       = (1 << 1),
-        MA_COOKIE    = (1 << 2),
-        MA_FLAGS     = (1 << 3),
-        MA_LMV       = (1 << 4),
-        MA_ACL_DEF   = (1 << 5),
-        MA_LOV_DEF   = (1 << 6),
-        MA_LAY_GEN   = (1 << 7),
-        MA_HSM       = (1 << 8),
-        MA_SOM       = (1 << 9),
-        MA_PFID      = (1 << 10)
+	MA_INODE     = 1 << 0,
+	MA_LOV       = 1 << 1,
+	MA_FLAGS     = 1 << 2,
+	MA_LMV       = 1 << 3,
+	MA_ACL_DEF   = 1 << 4,
+	MA_LOV_DEF   = 1 << 5,
+	MA_HSM       = 1 << 6,
+	MA_PFID      = 1 << 7,
+	MA_LMV_DEF   = 1 << 8,
+	MA_SOM	     = 1 << 9,
 };
 
 typedef enum {
@@ -134,6 +95,9 @@ typedef enum {
         MDT_PDO_LOCK = (1 << 1)
 } mdl_type_t;
 
+/* lfs rgetfacl permission check */
+#define MAY_RGETFACL    (1 << 14)
+
 /* memory structure for hsm attributes
  * for fields description see the on disk structure hsm_attrs
  * which is defined in lustre_idl.h
@@ -145,233 +109,237 @@ struct md_hsm {
 	__u64	mh_arch_ver;
 };
 
-#define IOEPOCH_INVAL 0
 
-/* memory structure for som attributes
+/* memory structure for SOM attributes
  * for fields description see the on disk structure som_attrs
  * which is defined in lustre_idl.h
  */
-struct md_som_data {
-	__u32	msd_compat;
-	__u32	msd_incompat;
-	__u64	msd_ioepoch;
-	__u64	msd_size;
-	__u64	msd_blocks;
-	__u64	msd_mountid;
+struct md_som {
+	__u16	ms_valid;
+	__u64	ms_size;
+	__u64	ms_blocks;
 };
 
 struct md_attr {
-        __u64                   ma_valid;
-        __u64                   ma_need;
-        __u64                   ma_attr_flags;
-        struct lu_attr          ma_attr;
-        struct lu_fid           ma_pfid;
-        struct md_hsm           ma_hsm;
-        struct lov_mds_md      *ma_lmm;
-        struct lmv_stripe_md   *ma_lmv;
-        void                   *ma_acl;
-        struct llog_cookie     *ma_cookie;
-        struct lustre_capa     *ma_capa;
-        struct md_som_data     *ma_som;
-        int                     ma_lmm_size;
-        int                     ma_lmv_size;
-        int                     ma_acl_size;
-        int                     ma_cookie_size;
-        __u16                   ma_layout_gen;
+	__u64			 ma_valid;
+	__u64			 ma_need;
+	__u64			 ma_attr_flags;
+	struct lu_attr		 ma_attr;
+	struct lu_fid		 ma_pfid;
+	struct md_hsm		 ma_hsm;
+	struct md_som		 ma_som;
+	struct lov_mds_md	*ma_lmm;
+	union lmv_mds_md	*ma_lmv;
+	struct lmv_user_md	*ma_default_lmv;
+	void			*ma_acl;
+	int			 ma_lmm_size;
+	int			 ma_lmv_size;
+	int			 ma_default_lmv_size;
+	int			 ma_acl_size;
 };
 
 /** Additional parameters for create */
 struct md_op_spec {
-        union {
-                /** symlink target */
-                const char               *sp_symname;
-                /** parent FID for cross-ref mkdir */
-                const struct lu_fid      *sp_pfid;
-                /** eadata for regular files */
-                struct md_spec_reg {
-                        /** lov objs exist already */
-                        const struct lu_fid   *fid;
-                        const void *eadata;
-                        int  eadatalen;
-                } sp_ea;
-        } u;
-
-        /** Create flag from client: such as MDS_OPEN_CREAT, and others. */
-        __u64      sp_cr_flags;
+	union {
+		/** symlink target */
+		const char *sp_symname;
+		/** eadata for regular files */
+		struct md_spec_reg {
+			void *eadata;
+			int  eadatalen;
+		} sp_ea;
+	} u;
+
+	/** Open flags from client: such as MDS_OPEN_CREAT, and others. */
+	__u64      sp_cr_flags;
+
+	/* File security context for creates. */
+	const char	*sp_cr_file_secctx_name; /* (security) xattr name */
+	void		*sp_cr_file_secctx; /* xattr value */
+	size_t		 sp_cr_file_secctx_size; /* xattr value size */
+
+	/* Archive ID used for auto PCC attach when create newly files. */
+	__u32		 sp_archive_id;
 
 	/** don't create lov objects or llog cookie - this replay */
 	unsigned int no_create:1,
 		     sp_cr_lookup:1, /* do lookup sanity check or not. */
-		     sp_rm_entry:1;  /* only remove name entry */
-
+		     sp_rm_entry:1,  /* only remove name entry */
+		     sp_permitted:1, /* do not check permission */
+		     sp_migrate_close:1; /* close the file during migrate */
 	/** Current lock mode for parent dir where create is performing. */
-        mdl_mode_t sp_cr_mode;
+	mdl_mode_t sp_cr_mode;
 
-        /** to create directory */
-        const struct dt_index_features *sp_feat;
+	/** to create directory */
+	const struct dt_index_features *sp_feat;
 };
 
+enum md_layout_opc {
+	MD_LAYOUT_NOP	= 0,
+	MD_LAYOUT_WRITE,	/* FLR: write the file */
+	MD_LAYOUT_RESYNC,	/* FLR: resync starts */
+	MD_LAYOUT_RESYNC_DONE,	/* FLR: resync done */
+};
+
+/**
+ * Parameters for layout change API.
+ */
+struct md_layout_change {
+	enum md_layout_opc	 mlc_opc;
+	__u16			 mlc_mirror_id;
+	struct layout_intent	*mlc_intent;
+	struct lu_buf		 mlc_buf;
+	struct lustre_som_attrs	 mlc_som;
+	size_t			 mlc_resync_count;
+	__u32			*mlc_resync_ids;
+};
+
+union ldlm_policy_data;
 /**
  * Operations implemented for each md object (both directory and leaf).
  */
 struct md_object_operations {
-        int (*moo_permission)(const struct lu_env *env,
-                              struct md_object *pobj, struct md_object *cobj,
-                              struct md_attr *attr, int mask);
+	int (*moo_permission)(const struct lu_env *env,
+			      struct md_object *pobj, struct md_object *cobj,
+			      struct md_attr *attr, int mask);
 
-        int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
-                            struct md_attr *attr);
+	int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
+			    struct md_attr *attr);
 
-        int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
-                            const struct md_attr *attr);
+	int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
+			    const struct md_attr *attr);
 
-        int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
-                             struct lu_buf *buf, const char *name);
+	int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
+			     struct lu_buf *buf, const char *name);
 
-        int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
-                              struct lu_buf *buf);
+	int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
+			      struct lu_buf *buf);
 
-        int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
-                             const struct lu_buf *buf, const char *name,
-                             int fl);
+	int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
+			     const struct lu_buf *buf, const char *name,
+			     int fl);
 
-        int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
-                             const char *name);
+	int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
+			     const char *name);
 
 	/** This method is used to swap the layouts between 2 objects */
 	int (*moo_swap_layouts)(const struct lu_env *env,
 			       struct md_object *obj1, struct md_object *obj2,
 			       __u64 flags);
 
-        /** \retval number of bytes actually read upon success */
-        int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
-                            const struct lu_rdpg *rdpg);
-
-        int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
-                            struct lu_buf *buf);
-        int (*moo_changelog)(const struct lu_env *env,
-                             enum changelog_rec_type type, int flags,
-                             struct md_object *obj);
-        /** part of cross-ref operation */
-        int (*moo_object_create)(const struct lu_env *env,
-                                 struct md_object *obj,
-                                 const struct md_op_spec *spec,
-                                 struct md_attr *ma);
-
-        int (*moo_ref_add)(const struct lu_env *env,
-                           struct md_object *obj,
-                           const struct md_attr *ma);
-
-        int (*moo_ref_del)(const struct lu_env *env,
-                           struct md_object *obj,
-                           struct md_attr *ma);
-
-        int (*moo_open)(const struct lu_env *env,
-                        struct md_object *obj, int flag);
-
-        int (*moo_close)(const struct lu_env *env, struct md_object *obj,
-                         struct md_attr *ma, int mode);
-
-        int (*moo_capa_get)(const struct lu_env *, struct md_object *,
-                            struct lustre_capa *, int renewal);
-
-        int (*moo_object_sync)(const struct lu_env *, struct md_object *);
-        int (*moo_path)(const struct lu_env *env, struct md_object *obj,
-                        char *path, int pathlen, __u64 *recno, int *linkno);
-        int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj,
-                             struct lov_mds_md *lmm, struct ldlm_extent *extent,
-                             struct lustre_handle *lockh);
-        int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj,
-                               struct lov_mds_md *lmm,
-                               struct lustre_handle *lockh);
+	/** \retval number of bytes actually read upon success */
+	int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
+			    const struct lu_rdpg *rdpg);
+
+	int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
+			    struct lu_buf *buf);
+
+	int (*moo_changelog)(const struct lu_env *env,
+			     enum changelog_rec_type type,
+			     enum changelog_rec_flags clf_flags,
+			     struct md_device *m, const struct lu_fid *fid);
+
+	int (*moo_open)(const struct lu_env *env, struct md_object *obj,
+			u64 open_flags, struct md_op_spec*);
+
+	int (*moo_close)(const struct lu_env *env, struct md_object *obj,
+			 struct md_attr *ma, u64 open_flags);
+
+	int (*moo_object_sync)(const struct lu_env *, struct md_object *);
+
 	int (*moo_object_lock)(const struct lu_env *env, struct md_object *obj,
 			       struct lustre_handle *lh,
 			       struct ldlm_enqueue_info *einfo,
-			       void *policy);
+			       union ldlm_policy_data *policy);
+	int (*moo_object_unlock)(const struct lu_env *env,
+				 struct md_object *obj,
+				 struct ldlm_enqueue_info *einfo,
+				 union ldlm_policy_data *policy);
+
+	int (*moo_invalidate)(const struct lu_env *env, struct md_object *obj);
+	/**
+	 * Trying to write to un-instantiated layout component.
+	 *
+	 * The caller should have held layout lock.
+	 *
+	 * This API can be extended to support every other layout changing
+	 * operations, such as component {add,del,change}, layout swap,
+	 * layout merge, etc. One of the benefits by doing this is that the MDT
+	 * no longer needs to understand layout.
+	 *
+	 * However, layout creation, removal, and fetch should still use
+	 * xattr_{get,set}() because they don't interpret layout on the
+	 * MDT layer.
+	 *
+	 * \param[in] env	execution environment
+	 * \param[in] obj	MD object
+	 * \param[in] layout	data structure to describe the changes to
+	 *			the MD object's layout
+	 *
+	 * \retval 0		success
+	 * \retval -ne		error code
+	 */
+	int (*moo_layout_change)(const struct lu_env *env,
+				 struct md_object *obj,
+				 struct md_layout_change *layout);
 };
 
 /**
  * Operations implemented for each directory object.
  */
 struct md_dir_operations {
-        int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj,
-                              const struct lu_fid *fid, struct lu_fid *sfid);
+	int (*mdo_is_subdir)(const struct lu_env *env, struct md_object *obj,
+			     const struct lu_fid *fid);
 
-        int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
-                          const struct lu_name *lname, struct lu_fid *fid,
-                          struct md_op_spec *spec);
+	int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
+			  const struct lu_name *lname, struct lu_fid *fid,
+			  struct md_op_spec *spec);
 
-        mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
-                                    struct md_object *obj,
-                                    mdl_mode_t mode);
+	mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
+				    struct md_object *obj,
+				    mdl_mode_t mode);
 
-        int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
-                          const struct lu_name *lname, struct md_object *child,
-                          struct md_op_spec *spec,
-                          struct md_attr *ma);
+	int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
+			  const struct lu_name *lname, struct md_object *child,
+			  struct md_op_spec *spec,
+			  struct md_attr *ma);
 
-        /** This method is used for creating data object for this meta object*/
-        int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
-                               struct md_object *o,
-                               const struct md_op_spec *spec,
-                               struct md_attr *ma);
+	/** This method is used for creating data object for this meta object*/
+	int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
+			       struct md_object *o,
+			       const struct md_op_spec *spec,
+			       struct md_attr *ma);
 
-        int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
-                          struct md_object *tpobj, const struct lu_fid *lf,
-                          const struct lu_name *lsname, struct md_object *tobj,
-                          const struct lu_name *ltname, struct md_attr *ma);
+	int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
+			  struct md_object *tpobj, const struct lu_fid *lf,
+			  const struct lu_name *lsname, struct md_object *tobj,
+			  const struct lu_name *ltname, struct md_attr *ma);
 
-        int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
-                        struct md_object *src_obj, const struct lu_name *lname,
-                        struct md_attr *ma);
+	int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
+			struct md_object *src_obj, const struct lu_name *lname,
+			struct md_attr *ma);
 
 	int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj,
 			  struct md_object *cobj, const struct lu_name *lname,
 			  struct md_attr *ma, int no_name);
 
-        /** This method is used to compare a requested layout to an existing
-         * layout (struct lov_mds_md_v1/3 vs struct lov_mds_md_v1/3) */
-        int (*mdo_lum_lmm_cmp)(const struct lu_env *env,
-                               struct md_object *cobj,
-                               const struct md_op_spec *spec,
-                               struct md_attr *ma);
-
-        /** partial ops for cross-ref case */
-        int (*mdo_name_insert)(const struct lu_env *env,
-                               struct md_object *obj,
-                               const struct lu_name *lname,
-                               const struct lu_fid *fid,
-                               const struct md_attr *ma);
-
-        int (*mdo_name_remove)(const struct lu_env *env,
-                               struct md_object *obj,
-                               const struct lu_name *lname,
-                               const struct md_attr *ma);
-
-        int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj,
-                              struct md_object *tobj, const struct lu_fid *fid,
-                              const struct lu_name *lname, struct md_attr *ma);
+	int (*mdo_migrate)(const struct lu_env *env, struct md_object *pobj,
+			   struct md_object *sobj, const struct lu_name *lname,
+			   struct md_object *tobj, struct md_op_spec *spec,
+			   struct md_attr *ma);
 };
 
 struct md_device_operations {
         /** meta-data device related handlers. */
-        int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
-                            struct lu_fid *f);
+	int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
+			    struct lu_fid *f);
 
-        int (*mdo_maxsize_get)(const struct lu_env *env, struct md_device *m,
-                               int *md_size, int *cookie_size);
+	const struct dt_device_param *(*mdo_dtconf_get)(const struct lu_env *e,
+							struct md_device *m);
 
         int (*mdo_statfs)(const struct lu_env *env, struct md_device *m,
                           struct obd_statfs *sfs);
 
-        int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m,
-                                  int mode, unsigned long timeout, __u32 alg,
-                                  struct lustre_capa_key *keys);
-
-        int (*mdo_update_capa_key)(const struct lu_env *env,
-                                   struct md_device *m,
-                                   struct lustre_capa_key *key);
-
         int (*mdo_llog_ctxt_get)(const struct lu_env *env,
                                  struct md_device *m, int idx, void **h);
 
@@ -379,113 +347,17 @@ struct md_device_operations {
                              unsigned int cmd, int len, void *data);
 };
 
-enum md_upcall_event {
-        /** Sync the md layer*/
-        MD_LOV_SYNC = (1 << 0),
-        /** Just for split, no need trans, for replay */
-        MD_NO_TRANS = (1 << 1),
-        MD_LOV_CONFIG = (1 << 2),
-        /** Trigger quota recovery */
-        MD_LOV_QUOTA = (1 << 3)
-};
-
-struct md_upcall {
-        /** this lock protects upcall using against its removal
-         * read lock is for usage the upcall, write - for init/fini */
-	struct rw_semaphore	mu_upcall_sem;
-        /** device to call, upper layer normally */
-        struct md_device       *mu_upcall_dev;
-        /** upcall function */
-        int (*mu_upcall)(const struct lu_env *env, struct md_device *md,
-                         enum md_upcall_event ev, void *data);
-};
-
 struct md_device {
         struct lu_device                   md_lu_dev;
         const struct md_device_operations *md_ops;
-        struct md_upcall                   md_upcall;
 };
 
-static inline void md_upcall_init(struct md_device *m, void *upcl)
-{
-	init_rwsem(&m->md_upcall.mu_upcall_sem);
-	m->md_upcall.mu_upcall_dev = NULL;
-	m->md_upcall.mu_upcall = upcl;
-}
-
-static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up)
-{
-	down_write(&m->md_upcall.mu_upcall_sem);
-	m->md_upcall.mu_upcall_dev = up;
-	up_write(&m->md_upcall.mu_upcall_sem);
-}
-
-static inline void md_upcall_fini(struct md_device *m)
-{
-	down_write(&m->md_upcall.mu_upcall_sem);
-	m->md_upcall.mu_upcall_dev = NULL;
-	m->md_upcall.mu_upcall = NULL;
-	up_write(&m->md_upcall.mu_upcall_sem);
-}
-
-static inline int md_do_upcall(const struct lu_env *env, struct md_device *m,
-				enum md_upcall_event ev, void *data)
-{
-	int rc = 0;
-	down_read(&m->md_upcall.mu_upcall_sem);
-	if (m->md_upcall.mu_upcall_dev != NULL &&
-	    m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) {
-		rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env,
-					      m->md_upcall.mu_upcall_dev,
-					      ev, data);
-	}
-	up_read(&m->md_upcall.mu_upcall_sem);
-	return rc;
-}
-
 struct md_object {
         struct lu_object                   mo_lu;
         const struct md_object_operations *mo_ops;
         const struct md_dir_operations    *mo_dir_ops;
 };
 
-/**
- * seq-server site.
- */
-struct seq_server_site {
-	struct lu_site	     *ss_lu;
-	/**
-	 * mds number of this site.
-	 */
-	mdsno_t               ss_node_id;
-	/**
-	 * Fid location database
-	 */
-	struct lu_server_fld *ss_server_fld;
-	struct lu_client_fld *ss_client_fld;
-
-	/**
-	 * Server Seq Manager
-	 */
-	struct lu_server_seq *ss_server_seq;
-
-	/**
-	 * Controller Seq Manager
-	 */
-	struct lu_server_seq *ss_control_seq;
-	struct obd_export    *ss_control_exp;
-
-	/**
-	 * Client Seq Manager
-	 */
-	struct lu_client_seq *ss_client_seq;
-};
-
-static inline int lu_device_is_md(const struct lu_device *d)
-{
-        return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_MD);
-}
-
 static inline struct md_device *lu2md_dev(const struct lu_device *d)
 {
         LASSERT(IS_ERR(d) || lu_device_is_md(d));
@@ -503,22 +375,6 @@ static inline struct md_object *lu2md(const struct lu_object *o)
         return container_of0(o, struct md_object, mo_lu);
 }
 
-static inline struct md_object *md_object_next(const struct md_object *obj)
-{
-        return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL);
-}
-
-static inline struct md_device *md_obj2dev(const struct md_object *o)
-{
-        LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev));
-        return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
-}
-
-static inline struct seq_server_site *lu_site2seq(const struct lu_site *s)
-{
-	return s->ld_seq_site;
-}
-
 static inline int md_device_init(struct md_device *md, struct lu_device_type *t)
 {
         return lu_device_init(&md->md_lu_dev, t);
@@ -538,22 +394,19 @@ static inline struct md_object *md_object_find_slice(const struct lu_env *env,
 
 
 /** md operations */
-static inline int mo_permission(const struct lu_env *env,
-                                struct md_object *p,
-                                struct md_object *c,
-                                struct md_attr *at,
-                                int mask)
+static inline int mo_permission(const struct lu_env *env, struct md_object *p,
+				struct md_object *c, struct md_attr *at,
+				int mask)
 {
-        LASSERT(c->mo_ops->moo_permission);
-        return c->mo_ops->moo_permission(env, p, c, at, mask);
+	LASSERT(c->mo_ops->moo_permission);
+	return c->mo_ops->moo_permission(env, p, c, at, mask);
 }
 
-static inline int mo_attr_get(const struct lu_env *env,
-                              struct md_object *m,
-                              struct md_attr *at)
+static inline int mo_attr_get(const struct lu_env *env, struct md_object *m,
+			      struct md_attr *at)
 {
-        LASSERT(m->mo_ops->moo_attr_get);
-        return m->mo_ops->moo_attr_get(env, m, at);
+	LASSERT(m->mo_ops->moo_attr_get);
+	return m->mo_ops->moo_attr_get(env, m, at);
 }
 
 static inline int mo_readlink(const struct lu_env *env,
@@ -565,11 +418,28 @@ static inline int mo_readlink(const struct lu_env *env,
 }
 
 static inline int mo_changelog(const struct lu_env *env,
-                               enum changelog_rec_type type,
-                               int flags, struct md_object *m)
+			       enum changelog_rec_type type,
+			       enum changelog_rec_flags clf_flags,
+			       struct md_device *m, const struct lu_fid *fid)
 {
-        LASSERT(m->mo_ops->moo_changelog);
-        return m->mo_ops->moo_changelog(env, type, flags, m);
+	struct lu_fid rootfid;
+	struct md_object *root;
+	int rc;
+
+	rc = m->md_ops->mdo_root_get(env, m, &rootfid);
+	if (rc)
+		return rc;
+
+	root = md_object_find_slice(env, m, &rootfid);
+	if (IS_ERR(root))
+		RETURN(PTR_ERR(root));
+
+	LASSERT(root->mo_ops->moo_changelog);
+	rc = root->mo_ops->moo_changelog(env, type, clf_flags, m, fid);
+
+	lu_object_put(env, &root->mo_lu);
+
+	return rc;
 }
 
 static inline int mo_attr_set(const struct lu_env *env,
@@ -615,6 +485,21 @@ static inline int mo_xattr_list(const struct lu_env *env,
         return m->mo_ops->moo_xattr_list(env, m, buf);
 }
 
+static inline int mo_invalidate(const struct lu_env *env, struct md_object *m)
+{
+	LASSERT(m->mo_ops->moo_invalidate);
+	return m->mo_ops->moo_invalidate(env, m);
+}
+
+static inline int mo_layout_change(const struct lu_env *env,
+				   struct md_object *m,
+				   struct md_layout_change *layout)
+{
+	/* need instantiate objects which in the access range */
+	LASSERT(m->mo_ops->moo_layout_change);
+	return m->mo_ops->moo_layout_change(env, m, layout);
+}
+
 static inline int mo_swap_layouts(const struct lu_env *env,
 				  struct md_object *o1,
 				  struct md_object *o2, __u64 flags)
@@ -626,21 +511,18 @@ static inline int mo_swap_layouts(const struct lu_env *env,
 	return o1->mo_ops->moo_swap_layouts(env, o1, o2, flags);
 }
 
-static inline int mo_open(const struct lu_env *env,
-                          struct md_object *m,
-                          int flags)
+static inline int mo_open(const struct lu_env *env, struct md_object *m,
+			  u64 open_flags, struct md_op_spec *spec)
 {
-        LASSERT(m->mo_ops->moo_open);
-        return m->mo_ops->moo_open(env, m, flags);
+	LASSERT(m->mo_ops->moo_open);
+	return m->mo_ops->moo_open(env, m, open_flags, spec);
 }
 
-static inline int mo_close(const struct lu_env *env,
-                           struct md_object *m,
-                           struct md_attr *ma,
-                           int mode)
+static inline int mo_close(const struct lu_env *env, struct md_object *m,
+			   struct md_attr *ma, u64 open_flags)
 {
-        LASSERT(m->mo_ops->moo_close);
-        return m->mo_ops->moo_close(env, m, ma, mode);
+	LASSERT(m->mo_ops->moo_close);
+	return m->mo_ops->moo_close(env, m, ma, open_flags);
 }
 
 static inline int mo_readpage(const struct lu_env *env,
@@ -651,81 +533,31 @@ static inline int mo_readpage(const struct lu_env *env,
         return m->mo_ops->moo_readpage(env, m, rdpg);
 }
 
-static inline int mo_object_create(const struct lu_env *env,
-                                   struct md_object *m,
-                                   const struct md_op_spec *spc,
-                                   struct md_attr *at)
-{
-        LASSERT(m->mo_ops->moo_object_create);
-        return m->mo_ops->moo_object_create(env, m, spc, at);
-}
-
-static inline int mo_ref_add(const struct lu_env *env,
-                             struct md_object *m,
-                             const struct md_attr *ma)
-{
-        LASSERT(m->mo_ops->moo_ref_add);
-        return m->mo_ops->moo_ref_add(env, m, ma);
-}
-
-static inline int mo_ref_del(const struct lu_env *env,
-                             struct md_object *m,
-                             struct md_attr *ma)
-{
-        LASSERT(m->mo_ops->moo_ref_del);
-        return m->mo_ops->moo_ref_del(env, m, ma);
-}
-
-static inline int mo_capa_get(const struct lu_env *env,
-                              struct md_object *m,
-                              struct lustre_capa *c,
-                              int renewal)
-{
-        LASSERT(m->mo_ops->moo_capa_get);
-        return m->mo_ops->moo_capa_get(env, m, c, renewal);
-}
-
-static inline int mo_path(const struct lu_env *env, struct md_object *m,
-                          char *path, int pathlen, __u64 *recno, int *linkno)
-{
-        if (m->mo_ops->moo_path == NULL)
-                return -ENOSYS;
-        return m->mo_ops->moo_path(env, m, path, pathlen, recno, linkno);
-}
-
 static inline int mo_object_sync(const struct lu_env *env, struct md_object *m)
 {
         LASSERT(m->mo_ops->moo_object_sync);
         return m->mo_ops->moo_object_sync(env, m);
 }
 
-static inline int mo_file_lock(const struct lu_env *env, struct md_object *m,
-                               struct lov_mds_md *lmm,
-                               struct ldlm_extent *extent,
-                               struct lustre_handle *lockh)
-{
-        LASSERT(m->mo_ops->moo_file_lock);
-        return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh);
-}
-
-static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m,
-                                 struct lov_mds_md *lmm,
-                                 struct lustre_handle *lockh)
-{
-        LASSERT(m->mo_ops->moo_file_unlock);
-        return m->mo_ops->moo_file_unlock(env, m, lmm, lockh);
-}
-
 static inline int mo_object_lock(const struct lu_env *env,
 				 struct md_object *m,
 				 struct lustre_handle *lh,
 				 struct ldlm_enqueue_info *einfo,
-				 void *policy)
+				 union ldlm_policy_data *policy)
 {
 	LASSERT(m->mo_ops->moo_object_lock);
 	return m->mo_ops->moo_object_lock(env, m, lh, einfo, policy);
 }
 
+static inline int mo_object_unlock(const struct lu_env *env,
+				   struct md_object *m,
+				   struct ldlm_enqueue_info *einfo,
+				   union ldlm_policy_data *policy)
+{
+	LASSERT(m->mo_ops->moo_object_unlock);
+	return m->mo_ops->moo_object_unlock(env, m, einfo, policy);
+}
+
 static inline int mdo_lookup(const struct lu_env *env,
                              struct md_object *p,
                              const struct lu_name *lname,
@@ -780,13 +612,25 @@ static inline int mdo_rename(const struct lu_env *env,
                                           ma);
 }
 
+static inline int mdo_migrate(const struct lu_env *env,
+			     struct md_object *pobj,
+			     struct md_object *sobj,
+			     const struct lu_name *lname,
+			     struct md_object *tobj,
+			     struct md_op_spec *spec,
+			     struct md_attr *ma)
+{
+	LASSERT(pobj->mo_dir_ops->mdo_migrate);
+	return pobj->mo_dir_ops->mdo_migrate(env, pobj, sobj, lname, tobj, spec,
+					     ma);
+}
+
 static inline int mdo_is_subdir(const struct lu_env *env,
-                                struct md_object *mo,
-                                const struct lu_fid *fid,
-                                struct lu_fid *sfid)
+				struct md_object *mo,
+				const struct lu_fid *fid)
 {
-        LASSERT(mo->mo_dir_ops->mdo_is_subdir);
-        return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid);
+	LASSERT(mo->mo_dir_ops->mdo_is_subdir);
+	return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid);
 }
 
 static inline int mdo_link(const struct lu_env *env,
@@ -809,113 +653,56 @@ static inline int mdo_unlink(const struct lu_env *env,
 	return p->mo_dir_ops->mdo_unlink(env, p, c, lname, ma, no_name);
 }
 
-static inline int mdo_lum_lmm_cmp(const struct lu_env *env,
-                                  struct md_object *c,
-                                  const struct md_op_spec *spec,
-                                  struct md_attr *ma)
+static inline int mdo_statfs(const struct lu_env *env,
+			     struct md_device *m,
+			     struct obd_statfs *sfs)
 {
-        LASSERT(c->mo_dir_ops->mdo_lum_lmm_cmp);
-        return c->mo_dir_ops->mdo_lum_lmm_cmp(env, c, spec, ma);
+	LASSERT(m->md_ops->mdo_statfs);
+	return m->md_ops->mdo_statfs(env, m, sfs);
 }
 
-static inline int mdo_name_insert(const struct lu_env *env,
-                                  struct md_object *p,
-                                  const struct lu_name *lname,
-                                  const struct lu_fid *f,
-                                  const struct md_attr *ma)
-{
-        LASSERT(p->mo_dir_ops->mdo_name_insert);
-        return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma);
-}
-
-static inline int mdo_name_remove(const struct lu_env *env,
-                                  struct md_object *p,
-                                  const struct lu_name *lname,
-                                  const struct md_attr *ma)
-{
-        LASSERT(p->mo_dir_ops->mdo_name_remove);
-        return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma);
-}
+struct dt_device;
 
-static inline int mdo_rename_tgt(const struct lu_env *env,
-                                 struct md_object *p,
-                                 struct md_object *t,
-                                 const struct lu_fid *lf,
-                                 const struct lu_name *lname,
-                                 struct md_attr *ma)
-{
-        if (t) {
-                LASSERT(t->mo_dir_ops->mdo_rename_tgt);
-                return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
-        } else {
-                LASSERT(p->mo_dir_ops->mdo_rename_tgt);
-                return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
-        }
-}
+void lustre_som_swab(struct lustre_som_attrs *attrs);
+int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh);
+void lustre_hsm2buf(void *buf, const struct md_hsm *mh);
 
-/**
- * Used in MDD/OUT layer for object lock rule
- **/
-enum mdd_object_role {
-	MOR_SRC_PARENT,
-	MOR_SRC_CHILD,
-	MOR_TGT_PARENT,
-	MOR_TGT_CHILD,
-	MOR_TGT_ORPHAN
+enum {
+	UCRED_INVALID	= -1,
+	UCRED_INIT	= 0,
+	UCRED_OLD	= 1,
+	UCRED_NEW	= 2,
 };
 
-struct dt_device;
-/**
- * Structure to hold object information. This is used to create object
- * \pre llod_dir exist
- */
-struct lu_local_obj_desc {
-        const char                      *llod_dir;
-        const char                      *llod_name;
-        __u32                            llod_oid;
-        int                              llod_is_index;
-        const struct dt_index_features  *llod_feat;
-        cfs_list_t                       llod_linkage;
+struct lu_ucred {
+	__u32			 uc_valid;
+	__u32			 uc_o_uid;
+	__u32			 uc_o_gid;
+	__u32			 uc_o_fsuid;
+	__u32			 uc_o_fsgid;
+	__u32			 uc_uid;
+	__u32			 uc_gid;
+	__u32			 uc_fsuid;
+	__u32			 uc_fsgid;
+	__u32			 uc_suppgids[2];
+	cfs_cap_t		 uc_cap;
+	__u32			 uc_umask;
+	struct group_info	*uc_ginfo;
+	struct md_identity	*uc_identity;
+	char			 uc_jobid[LUSTRE_JOBID_SIZE];
+	lnet_nid_t		 uc_nid;
+	bool			 uc_enable_audit;
 };
 
-struct md_object *llo_store_resolve(const struct lu_env *env,
-                                    struct md_device *md,
-                                    struct dt_device *dt,
-                                    const char *path,
-                                    struct lu_fid *fid);
-
-struct md_object *llo_store_open(const struct lu_env *env,
-                                 struct md_device *md,
-                                 struct dt_device *dt,
-                                 const char *dirname,
-                                 const char *objname,
-                                 struct lu_fid *fid);
-
-struct md_object *llo_store_create_index(const struct lu_env *env,
-                                         struct md_device *md,
-                                         struct dt_device *dt,
-                                         const char *dirname,
-                                         const char *objname,
-                                         const struct lu_fid *fid,
-                                         const struct dt_index_features *feat);
-
-struct md_object *llo_store_create(const struct lu_env *env,
-                                   struct md_device *md,
-                                   struct dt_device *dt,
-                                   const char *dirname,
-                                   const char *objname,
-                                   const struct lu_fid *fid);
-
-void llo_local_obj_register(struct lu_local_obj_desc *);
-void llo_local_obj_unregister(struct lu_local_obj_desc *);
-
-int llo_local_objects_setup(const struct lu_env *env,
-                             struct md_device * md,
-                             struct dt_device * dt);
-
-int lustre_buf2som(void *buf, int rc, struct md_som_data *msd);
-int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh);
-void lustre_hsm2buf(void *buf, struct md_hsm *mh);
+struct lu_ucred *lu_ucred(const struct lu_env *env);
+
+struct lu_ucred *lu_ucred_check(const struct lu_env *env);
+
+struct lu_ucred *lu_ucred_assert(const struct lu_env *env);
+
+int lu_ucred_global_init(void);
+
+void lu_ucred_global_fini(void);
 
 #define md_cap_t(x) (x)