-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2002, 2003, 2004, 2005, 2006 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * 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
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef _LMV_INTERNAL_H_
#include <lustre/lustre_idl.h>
#include <obd.h>
-#ifndef __KERNEL__
-/* XXX: dirty hack, needs to be fixed more clever way. */
-struct qstr {
- const char *name;
- size_t len;
- unsigned hashval;
-};
-#endif
-
#define LMV_MAX_TGT_COUNT 128
-#define lmv_init_lock(lmv) down(&lmv->init_sem);
-#define lmv_init_unlock(lmv) up(&lmv->init_sem);
+#define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex);
+#define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex);
#define LL_IT2STR(it) \
((it) ? ldlm_it2str((it)->it_op) : "0")
-struct lmv_inode {
- struct lu_fid li_fid; /* id of dirobj */
- mdsno_t li_mds; /* cached mdsno where @li_fid lives */
- unsigned long li_size; /* slave size value */
- int li_flags;
+struct lmv_stripe {
+ /**
+ * Dir stripe fid.
+ */
+ struct lu_fid ls_fid;
+ /**
+ * Cached home mds number for \a li_fid.
+ */
+ mdsno_t ls_mds;
+ /**
+ * Stripe object size.
+ */
+ unsigned long ls_size;
+ /**
+ * Stripe flags.
+ */
+ int ls_flags;
};
-#define O_FREEING (1 << 0)
-
-struct lmv_obj {
- struct list_head lo_list;
- struct semaphore lo_guard;
- int lo_state; /* object state. */
- atomic_t lo_count; /* ref counter. */
- struct lu_fid lo_fid; /* master id of dir */
- void *lo_update; /* bitmap of status (up-to-date) */
- __u32 lo_hashtype;
- int lo_objcount; /* number of slaves */
- struct lmv_inode *lo_inodes; /* array of sub-objs */
- struct obd_device *lo_obd; /* pointer to LMV itself */
+#define O_FREEING (1 << 0)
+
+struct lmv_object {
+ /**
+ * Link to global objects list.
+ */
+ cfs_list_t lo_list;
+ /**
+ * Sema for protecting fields.
+ */
+ struct mutex lo_guard;
+ /**
+ * Object state like O_FREEING.
+ */
+ int lo_state;
+ /**
+ * Object ref counter.
+ */
+ cfs_atomic_t lo_count;
+ /**
+ * Object master fid.
+ */
+ struct lu_fid lo_fid;
+ /**
+ * Object hash type to find stripe by name.
+ */
+ __u32 lo_hashtype;
+ /**
+ * Number of stripes.
+ */
+ int lo_objcount;
+ /**
+ * Array of sub-objs.
+ */
+ struct lmv_stripe *lo_stripes;
+ /**
+ * Pointer to LMV obd.
+ */
+ struct obd_device *lo_obd;
};
-int lmv_obj_setup(struct obd_device *obd);
-void lmv_obj_cleanup(struct obd_device *obd);
+int lmv_object_setup(struct obd_device *obd);
+void lmv_object_cleanup(struct obd_device *obd);
static inline void
-lmv_obj_lock(struct lmv_obj *obj)
+lmv_object_lock(struct lmv_object *obj)
{
LASSERT(obj);
- down(&obj->lo_guard);
+ mutex_lock(&obj->lo_guard);
}
static inline void
-lmv_obj_unlock(struct lmv_obj *obj)
+lmv_object_unlock(struct lmv_object *obj)
{
LASSERT(obj);
- up(&obj->lo_guard);
+ mutex_unlock(&obj->lo_guard);
}
-void lmv_obj_add(struct lmv_obj *obj);
-void lmv_obj_del(struct lmv_obj *obj);
+void lmv_object_add(struct lmv_object *obj);
+void lmv_object_del(struct lmv_object *obj);
+
+void lmv_object_put(struct lmv_object *obj);
+void lmv_object_put_unlock(struct lmv_object *obj);
+void lmv_object_free(struct lmv_object *obj);
-void lmv_obj_put(struct lmv_obj *obj);
-void lmv_obj_free(struct lmv_obj *obj);
+struct lmv_object *lmv_object_get(struct lmv_object *obj);
-struct lmv_obj *lmv_obj_get(struct lmv_obj *obj);
+struct lmv_object *lmv_object_find(struct obd_device *obd,
+ const struct lu_fid *fid);
-struct lmv_obj *lmv_obj_grab(struct obd_device *obd,
- const struct lu_fid *fid);
+struct lmv_object *lmv_object_find_lock(struct obd_device *obd,
+ const struct lu_fid *fid);
-struct lmv_obj *lmv_obj_alloc(struct obd_device *obd,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea);
+struct lmv_object *lmv_object_alloc(struct obd_device *obd,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea);
-struct lmv_obj *lmv_obj_create(struct obd_export *exp,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea);
+struct lmv_object *lmv_object_create(struct obd_export *exp,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea);
-int lmv_obj_delete(struct obd_export *exp,
- const struct lu_fid *fid);
+int lmv_object_delete(struct obd_export *exp,
+ const struct lu_fid *fid);
int lmv_check_connect(struct obd_device *obd);
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
- int extra_lock_flags);
+ __u64 extra_lock_flags);
int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
- int extra_lock_flags);
+ __u64 extra_lock_flags);
int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
- int extra_lock_flags);
+ __u64 extra_lock_flags);
-int lmv_intent_getattr(struct obd_export *exp, struct md_op_data *op_data,
- void *lmm, int lmmsize, struct lookup_intent *it,
- int flags, struct ptlrpc_request **reqp,
- ldlm_blocking_callback cb_blocking,
- int extra_lock_flags);
+int lmv_allocate_slaves(struct obd_device *obd, struct lu_fid *pid,
+ struct md_op_data *op, struct lu_fid *fid);
int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **,
const struct lu_fid *, struct lookup_intent *, int,
ldlm_blocking_callback cb_blocking,
- int extra_lock_flags);
+ __u64 extra_lock_flags);
int lmv_handle_split(struct obd_export *, const struct lu_fid *);
int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
mdsno_t mds);
int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
struct md_op_data *op_data);
-int lmv_alloc_slave_fids(struct obd_device *obd, struct lu_fid *pid,
- struct md_op_data *op, struct lu_fid *fid);
-static inline struct lmv_stripe_md *
-lmv_get_mea(struct ptlrpc_request *req)
+static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req)
{
- struct mdt_body *body;
- struct lmv_stripe_md *mea;
+ struct mdt_body *body;
+ struct lmv_stripe_md *mea;
- LASSERT(req);
+ LASSERT(req != NULL);
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
- if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
- return NULL;
+ if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
+ return NULL;
mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD,
body->eadatasize);
- LASSERT(mea != NULL);
+ LASSERT(mea != NULL);
- if (mea->mea_count == 0)
- return NULL;
+ if (mea->mea_count == 0)
+ return NULL;
if( mea->mea_magic != MEA_MAGIC_LAST_CHAR &&
mea->mea_magic != MEA_MAGIC_ALL_CHARS &&
mea->mea_magic != MEA_MAGIC_HASH_SEGMENT)
return NULL;
-
- return mea;
+
+ return mea;
}
static inline int lmv_get_easize(struct lmv_obd *lmv)
return &lmv->tgts[mds];
}
-static inline struct obd_export *
-lmv_get_export(struct lmv_obd *lmv, mdsno_t mds)
-{
- return lmv_get_target(lmv, mds)->ltd_exp;
-}
-
static inline struct lmv_tgt_desc *
lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- mdsno_t mds;
+ mdsno_t mds = 0;
int rc;
-
- rc = lmv_fld_lookup(lmv, fid, &mds);
- if (rc)
- return ERR_PTR(rc);
- return lmv_get_target(lmv, mds);
-}
+ if (lmv->desc.ld_tgt_count > 1) {
+ rc = lmv_fld_lookup(lmv, fid, &mds);
+ if (rc)
+ return ERR_PTR(rc);
+ }
-static inline struct obd_export *
-lmv_find_export(struct lmv_obd *lmv, const struct lu_fid *fid)
-{
- struct lmv_tgt_desc *tgt = lmv_find_target(lmv, fid);
- if (IS_ERR(tgt))
- return (struct obd_export *)tgt;
- return tgt->ltd_exp;
-}
-
-static inline void lmv_update_body(struct mdt_body *body,
- struct lmv_inode *lino)
-{
- /* update object size */
- body->size += lino->li_size;
+ return lmv_get_target(lmv, mds);
}
/* lproc_lmv.c */
extern struct file_operations lmv_proc_target_fops;
#endif
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff