X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=c8b28b4e8be9a6c8845f1db55f95407fadb49a47;hb=40a3452c70c6b97185c83c8f804fd6eeb2e0e006;hp=42afd6778324d380537bc215536df178d681ec30;hpb=386f2e3a877e214eecd69130a45b45d7570260a7;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index 42afd67..c8b28b4 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,116 +1,168 @@ +/* -*- 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. + * + * This file is part of Lustre, http://www.lustre.org. + * + * 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. + * + * 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 + * along with Lustre; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + #ifndef _LMV_INTERNAL_H_ #define _LMV_INTERNAL_H_ +#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 LL_IT2STR(it) \ ((it) ? ldlm_it2str((it)->it_op) : "0") -#define MEA_SIZE_LMV(lmv) \ - ((lmv)->desc.ld_tgt_count * \ - sizeof(struct ll_fid) + sizeof(struct mea)) - struct lmv_inode { - struct ll_fid fid; /* fid of dirobj */ - unsigned long size; /* slave size value */ - int flags; + 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; }; #define O_FREEING (1 << 0) struct lmv_obj { - struct list_head list; - struct semaphore guard; - int state; /* object state. */ - atomic_t count; /* ref counter. */ - struct ll_fid fid; /* master fid of dir */ - void *update; /* bitmap of status (uptodate) */ - int objcount; /* number of slaves */ - struct lmv_inode *objs; /* array of dirobjs */ - struct obd_device *obd; /* pointer to LMV itself */ + 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 */ }; +int lmv_obj_setup(struct obd_device *obd); +void lmv_obj_cleanup(struct obd_device *obd); + static inline void -lmv_lock_obj(struct lmv_obj *obj) +lmv_obj_lock(struct lmv_obj *obj) { LASSERT(obj); - down(&obj->guard); + down(&obj->lo_guard); } static inline void -lmv_unlock_obj(struct lmv_obj *obj) +lmv_obj_unlock(struct lmv_obj *obj) { LASSERT(obj); - up(&obj->guard); + up(&obj->lo_guard); } -void lmv_add_obj(struct lmv_obj *obj); -void lmv_del_obj(struct lmv_obj *obj); +void lmv_obj_add(struct lmv_obj *obj); +void lmv_obj_del(struct lmv_obj *obj); -void lmv_put_obj(struct lmv_obj *obj); -void lmv_free_obj(struct lmv_obj *obj); +void lmv_obj_put(struct lmv_obj *obj); +void lmv_obj_free(struct lmv_obj *obj); -int lmv_setup_mgr(struct obd_device *obd); -void lmv_cleanup_mgr(struct obd_device *obd); -int lmv_check_connect(struct obd_device *obd); - -struct lmv_obj *lmv_get_obj(struct lmv_obj *obj); - -struct lmv_obj *lmv_grab_obj(struct obd_device *obd, - struct ll_fid *fid); - -struct lmv_obj *lmv_alloc_obj(struct obd_device *obd, - struct ll_fid *fid, - struct mea *mea); +struct lmv_obj *lmv_obj_get(struct lmv_obj *obj); -struct lmv_obj *lmv_create_obj(struct obd_export *exp, - struct ll_fid *fid, - struct mea *mea); +struct lmv_obj *lmv_obj_grab(struct obd_device *obd, + const struct lu_fid *fid); -int lmv_delete_obj(struct obd_export *exp, struct ll_fid *fid); +struct lmv_obj *lmv_obj_alloc(struct obd_device *obd, + const struct lu_fid *fid, + struct lmv_stripe_md *mea); -int lmv_intent_lock(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); +struct lmv_obj *lmv_obj_create(struct obd_export *exp, + const struct lu_fid *fid, + struct lmv_stripe_md *mea); -int lmv_intent_lookup(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); +int lmv_obj_delete(struct obd_export *exp, + const struct lu_fid *fid); -int lmv_intent_getattr(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); +int lmv_check_connect(struct obd_device *obd); -int lmv_intent_open(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); +int lmv_intent_lock(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_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); + +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); + +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_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct ll_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); - -int lmv_get_mea_and_update_object(struct obd_export *, struct ll_fid *); -int lmv_dirobj_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, - void *, int); - -static inline struct mea * -body_of_splitted_dir(struct ptlrpc_request *req, int offset) + const struct lu_fid *, struct lookup_intent *, int, + ldlm_blocking_callback cb_blocking, + int 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 *, + void *, int); +int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, + mdsno_t *mds); +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) { - struct mds_body *body; - struct mea *mea; + struct mdt_body *body; + struct lmv_stripe_md *mea; LASSERT(req); 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; - mea = lustre_msg_buf(req->rq_repmsg, - offset + 1, body->eadatasize); - LASSERT(mea); + mea = lustre_msg_buf(req->rq_repmsg, offset + 1, + body->eadatasize); + LASSERT(mea != NULL); if (mea->mea_count == 0) return NULL; @@ -118,17 +170,56 @@ body_of_splitted_dir(struct ptlrpc_request *req, int offset) return mea; } -static inline int -fid_equal(struct ll_fid *fid1, struct ll_fid *fid2) +static inline int lmv_get_easize(struct lmv_obd *lmv) +{ + return sizeof(struct lmv_stripe_md) + + lmv->desc.ld_tgt_count * + sizeof(struct lu_fid); +} + +static inline struct lmv_tgt_desc * +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) { - if (fid1->mds != fid2->mds) - return 0; - if (fid1->id != fid2->id) - return 0; - if (fid1->generation != fid2->generation) - return 0; - return 1; + 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); + + 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) +{ + /* update object size */ + body->size += lino->li_size; +} + +/* lproc_lmv.c */ +extern struct file_operations lmv_proc_target_fops; + #endif