X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Flmv%2Flmv_internal.h;h=15692c54682d4bf57ac3c1ed674d96c87c8d4a1c;hb=54f163e1f393a8b7b88b9a3961a68517c258902a;hp=ccceb95095c58720dd1e60a56c37d70fc4000513;hpb=c39489126f88bb5b30643ebb11c72fbe9f9d2241;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index ccceb95..15692c5 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,142 +1,159 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * 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. + * + * 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 + * 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. + * + * Copyright (c) 2011, 2013, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ + #ifndef _LMV_INTERNAL_H_ #define _LMV_INTERNAL_H_ -#define LL_IT2STR(it) \ - ((it) ? ldlm_it2str((it)->it_op) : "0") +#include +#include -#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; -}; - -#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) */ - __u32 hashtype; - int objcount; /* number of slaves */ - struct lmv_inode *objs; /* array of dirobjs */ - struct obd_device *obd; /* pointer to LMV itself */ - unsigned long mtime; - unsigned long ctime; - unsigned long atime; - unsigned long nlink; -}; - -static inline void -lmv_lock_obj(struct lmv_obj *obj) -{ - LASSERT(obj); - down(&obj->guard); -} +#define LMV_MAX_TGT_COUNT 128 -static inline void -lmv_unlock_obj(struct lmv_obj *obj) -{ - LASSERT(obj); - up(&obj->guard); -} +#define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex); +#define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex); -void lmv_add_obj(struct lmv_obj *obj); -void lmv_del_obj(struct lmv_obj *obj); - -void lmv_put_obj(struct lmv_obj *obj); -void lmv_free_obj(struct lmv_obj *obj); +#define LL_IT2STR(it) \ + ((it) ? ldlm_it2str((it)->it_op) : "0") -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_create_obj(struct obd_export *exp, - struct ll_fid *fid, - struct mea *mea); - -int lmv_delete_obj(struct obd_export *exp, struct ll_fid *fid); +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, + __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, + __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, + __u64 extra_lock_flags); + +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); + +static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req) +{ + struct mdt_body *body; + struct lmv_stripe_md *mea; -int lmv_intent_lock(struct obd_export *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + LASSERT(req != NULL); -int lmv_intent_lookup(struct obd_export *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); -int lmv_intent_getattr(struct obd_export *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + if (!body || !S_ISDIR(body->mode) || !body->eadatasize) + return NULL; -int lmv_intent_open(struct obd_export *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, + body->eadatasize); + LASSERT(mea != NULL); -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct ll_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); + 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; -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); + return mea; +} -static inline struct mea * -body_of_splitted_dir(struct ptlrpc_request *req, int offset) +static inline int lmv_get_easize(struct lmv_obd *lmv) { - struct mds_body *body; - struct mea *mea; - - LASSERT(req); + return sizeof(struct lmv_stripe_md) + + lmv->desc.ld_tgt_count * + sizeof(struct lu_fid); +} - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) +{ + int count = lmv->desc.ld_tgt_count; + int i; - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; + for (i = 0; i < count; i++) { + if (lmv->tgts[i] == NULL) + continue; - mea = lustre_msg_buf(req->rq_repmsg, - offset + 1, body->eadatasize); - LASSERT(mea); + if (lmv->tgts[i]->ltd_idx == mds) + return lmv->tgts[i]; + } - if (mea->mea_count == 0) - return NULL; - - return mea; + return ERR_PTR(-ENODEV); } -static inline int -fid_equal(struct ll_fid *fid1, struct ll_fid *fid2) +static inline struct lmv_tgt_desc * +lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) { - if (fid1->mds != fid2->mds) - return 0; - if (fid1->id != fid2->id) - return 0; - if (fid1->generation != fid2->generation) - return 0; - return 1; + mdsno_t mds = 0; + int rc; + + if (lmv->desc.ld_tgt_count > 1) { + rc = lmv_fld_lookup(lmv, fid, &mds); + if (rc) + return ERR_PTR(rc); + } + + return lmv_get_target(lmv, mds); } +struct lmv_tgt_desc +*lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data, + struct lu_fid *fid); /* 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) +{ + memset(lvars, 0, sizeof(*lvars)); +} +#endif extern struct file_operations lmv_proc_target_fops; #endif -