X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=dda0a6857fe029e330f47a48da13ded1b3c7c6f1;hb=a0c7416698ee052f50c1bef50193e47bc80930d9;hp=c8b28b4e8be9a6c8845f1db55f95407fadb49a47;hpb=f50d3d56f80184bc21f729e1640422d6a2a31158;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index c8b28b4..dda0a68 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,22 +1,37 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * - * Copyright (C) 2002, 2003, 2004, 2005, 2006 Cluster File Systems, Inc. + * GPL HEADER START * - * This file is part of Lustre, http://www.lustre.org. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * 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 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 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. + * 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). * - * 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. + * 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. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2004, 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/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #ifndef _LMV_INTERNAL_H_ @@ -25,83 +40,116 @@ #include #include -#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) cfs_down(&lmv->init_sem); +#define lmv_init_unlock(lmv) cfs_up(&lmv->init_sem); #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. + */ + cfs_semaphore_t 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); + cfs_down(&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); + cfs_up(&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); @@ -123,11 +171,8 @@ int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data, ldlm_blocking_callback cb_blocking, int 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, @@ -143,31 +188,31 @@ int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, 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, int offset) +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 != NULL); - LASSERT(req); + body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); - LASSERT(lustre_rep_swabbed(req, offset)); + 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); - mea = lustre_msg_buf(req->rq_repmsg, offset + 1, - body->eadatasize); - LASSERT(mea != 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; - if (mea->mea_count == 0) - return NULL; - - return mea; + return mea; } static inline int lmv_get_easize(struct lmv_obd *lmv) @@ -183,18 +228,12 @@ lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) 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; int rc; - + rc = lmv_fld_lookup(lmv, fid, &mds); if (rc) return ERR_PTR(rc); @@ -202,24 +241,15 @@ lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) return lmv_get_target(lmv, mds); } -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) +/* lproc_lmv.c */ +#ifdef LPROCFS +void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars); +#else +static inline void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars) { - /* update object size */ - body->size += lino->li_size; + memset(lvars, 0, sizeof(*lvars)); } - -/* lproc_lmv.c */ +#endif extern struct file_operations lmv_proc_target_fops; #endif -