X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=de07e164114f1b24c83b5babd238fa5797c117b4;hb=d6c13b87b922e7402f1cb3c94a7132688cddb717;hp=d9842203de7a9cbeec69812d256a32f9a38dae2c;hpb=b58a81067237f398f735f85b2211431cfc37493a;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index d984220..de07e16 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -27,7 +27,7 @@ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, Whamcloud, Inc. + * Copyright (c) 2011, 2013, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -39,118 +39,16 @@ #include #include +#include #define LMV_MAX_TGT_COUNT 128 -#define lmv_init_lock(lmv) cfs_mutex_lock(&lmv->init_mutex); -#define lmv_init_unlock(lmv) cfs_mutex_unlock(&lmv->init_mutex); +#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_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_object { - /** - * Link to global objects list. - */ - cfs_list_t lo_list; - /** - * Sema for protecting fields. - */ - cfs_mutex_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_object_setup(struct obd_device *obd); -void lmv_object_cleanup(struct obd_device *obd); - -static inline void -lmv_object_lock(struct lmv_object *obj) -{ - LASSERT(obj); - cfs_mutex_lock(&obj->lo_guard); -} - -static inline void -lmv_object_unlock(struct lmv_object *obj) -{ - LASSERT(obj); - cfs_mutex_unlock(&obj->lo_guard); -} - -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); - -struct lmv_object *lmv_object_get(struct lmv_object *obj); - -struct lmv_object *lmv_object_find(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_object *lmv_object_alloc(struct obd_device *obd, - 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_object_delete(struct obd_export *exp, - const struct lu_fid *fid); - int lmv_check_connect(struct obd_device *obd); int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data, @@ -171,15 +69,6 @@ int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data, ldlm_blocking_callback cb_blocking, __u64 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, - __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 *, void *, int); int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, @@ -189,43 +78,21 @@ int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, 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) +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) { - struct mdt_body *body; - struct lmv_stripe_md *mea; - - LASSERT(req != NULL); - - body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); - - 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); + int count = lmv->desc.ld_tgt_count; + int i; - 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; + for (i = 0; i < count; i++) { + if (lmv->tgts[i] == NULL) + continue; - return mea; -} - -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); -} + if (lmv->tgts[i]->ltd_idx == mds) + return lmv->tgts[i]; + } -static inline struct lmv_tgt_desc * -lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) -{ - return &lmv->tgts[mds]; + return ERR_PTR(-ENODEV); } static inline struct lmv_tgt_desc * @@ -243,14 +110,48 @@ lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) return lmv_get_target(lmv, mds); } -/* 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) +static inline unsigned int +mea_last_char_hash(unsigned int count, const char *name, int namelen) +{ + unsigned int c; + + c = name[namelen - 1]; + if (c == 0) + CWARN("invalid name %.*s\n", namelen, name); + + c = c % count; + + return c; +} + +static inline unsigned int +mea_all_chars_hash(unsigned int count, const char *name, int namelen) { - memset(lvars, 0, sizeof(*lvars)); + unsigned int c = 0; + + while (--namelen >= 0) + c += name[namelen]; + + c = c % count; + + return c; } + +static inline int lmv_stripe_md_size(int stripe_count) +{ + struct lmv_stripe_md *lsm; + + return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]); +} + +int raw_name2idx(int hashtype, int count, const char *name, int namelen); + +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 +extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[]; #endif extern struct file_operations lmv_proc_target_fops;