X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flustre_mdc.h;h=ac7b0d5f4a2f0a99e66db0299aca7132d4c2ed53;hb=6703ea0bf5bd5584998472cadb6de83211802861;hp=c241c30f0eb7ca1ec0e202c909dafce6aa43c931;hpb=d016a086b68ca4af2dcbfefc3917b9291efd8d62;p=fs%2Flustre-release.git diff --git a/lustre/include/lustre_mdc.h b/lustre/include/lustre_mdc.h index c241c30..ac7b0d5 100644 --- a/lustre/include/lustre_mdc.h +++ b/lustre/include/lustre_mdc.h @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -17,11 +15,7 @@ * * 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. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ @@ -30,7 +24,7 @@ * Use is subject to license terms. */ /* - * Copyright (c) 2012 Whamcloud, Inc. + * Copyright (c) 2011, 2014, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -50,20 +44,18 @@ * @{ */ -#ifdef __KERNEL__ -# include -# include -# ifdef CONFIG_FS_POSIX_ACL -# include -# endif /* CONFIG_FS_POSIX_ACL */ -# include -#endif /* __KERNEL__ */ +#include +#include +#ifdef CONFIG_FS_POSIX_ACL +# include +#endif /* CONFIG_FS_POSIX_ACL */ #include +#include #include -#include +#include +#include #include #include -#include #include struct ptlrpc_client; @@ -71,68 +63,78 @@ struct obd_export; struct ptlrpc_request; struct obd_device; -struct mdc_rpc_lock { - cfs_mutex_t rpcl_mutex; - struct lookup_intent *rpcl_it; -}; - -static inline void mdc_init_rpc_lock(struct mdc_rpc_lock *lck) +static inline void mdc_get_mod_rpc_slot(struct ptlrpc_request *req, + struct lookup_intent *it) { - cfs_mutex_init(&lck->rpcl_mutex); - lck->rpcl_it = NULL; -} + struct client_obd *cli = &req->rq_import->imp_obd->u.cli; + __u32 opc; + __u16 tag; -static inline void mdc_get_rpc_lock(struct mdc_rpc_lock *lck, - struct lookup_intent *it) -{ - ENTRY; - if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) { - cfs_mutex_lock(&lck->rpcl_mutex); - LASSERT(lck->rpcl_it == NULL); - lck->rpcl_it = it; - } + opc = lustre_msg_get_opc(req->rq_reqmsg); + tag = obd_get_mod_rpc_slot(cli, opc, it); + lustre_msg_set_tag(req->rq_reqmsg, tag); } -static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck, - struct lookup_intent *it) +static inline void mdc_put_mod_rpc_slot(struct ptlrpc_request *req, + struct lookup_intent *it) { - if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) { - LASSERT(it == lck->rpcl_it); - lck->rpcl_it = NULL; - cfs_mutex_unlock(&lck->rpcl_mutex); - } - EXIT; + struct client_obd *cli = &req->rq_import->imp_obd->u.cli; + __u32 opc; + __u16 tag; + + opc = lustre_msg_get_opc(req->rq_reqmsg); + tag = lustre_msg_get_tag(req->rq_reqmsg); + obd_put_mod_rpc_slot(cli, opc, it, tag); } + +/** + * Update the maximum possible easize. + * + * This value is learned from ptlrpc replies sent by the MDT. The + * default easize is initialized to the minimum value but allowed to + * grow up to a single page in size if required to handle the common + * case. + * + * \see client_obd::cl_default_mds_easize + * + * \param[in] exp export for MDC device + * \param[in] body body of ptlrpc reply from MDT + * + */ static inline void mdc_update_max_ea_from_body(struct obd_export *exp, - struct mdt_body *body) + struct mdt_body *body) { - if (body->valid & OBD_MD_FLMODEASIZE) { - if (exp->exp_obd->u.cli.cl_max_mds_easize < body->max_mdsize) - exp->exp_obd->u.cli.cl_max_mds_easize = - body->max_mdsize; - if (exp->exp_obd->u.cli.cl_max_mds_cookiesize < - body->max_cookiesize) - exp->exp_obd->u.cli.cl_max_mds_cookiesize = - body->max_cookiesize; - } -} + if (body->mbo_valid & OBD_MD_FLMODEASIZE) { + struct client_obd *cli = &exp->exp_obd->u.cli; + __u32 def_easize; + + if (cli->cl_max_mds_easize < body->mbo_max_mdsize) + cli->cl_max_mds_easize = body->mbo_max_mdsize; + def_easize = min_t(__u32, body->mbo_max_mdsize, + OBD_MAX_DEFAULT_EA_SIZE); + cli->cl_default_mds_easize = def_easize; + } +} -struct mdc_cache_waiter { - cfs_list_t mcw_entry; - cfs_waitq_t mcw_waitq; -}; /* mdc/mdc_locks.c */ -int it_disposition(struct lookup_intent *it, int flag); -void it_clear_disposition(struct lookup_intent *it, int flag); -void it_set_disposition(struct lookup_intent *it, int flag); int it_open_error(int phase, struct lookup_intent *it); -#ifdef HAVE_SPLIT_SUPPORT -int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid, - const struct page *page, int offset); -#endif + +static inline bool cl_is_lov_delay_create(unsigned int flags) +{ + return (flags & O_LOV_DELAY_CREATE_1_8) != 0 || + (flags & O_LOV_DELAY_CREATE_MASK) == O_LOV_DELAY_CREATE_MASK; +} + +static inline void cl_lov_delay_create_clear(unsigned int *flags) +{ + if ((*flags & O_LOV_DELAY_CREATE_1_8) != 0) + *flags &= ~O_LOV_DELAY_CREATE_1_8; + if ((*flags & O_LOV_DELAY_CREATE_MASK) == O_LOV_DELAY_CREATE_MASK) + *flags &= ~O_LOV_DELAY_CREATE_MASK; +} /** @} mdc */