X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flustre_mdc.h;h=ac7b0d5f4a2f0a99e66db0299aca7132d4c2ed53;hb=d3090bb2b4860e997730e90426e11fc51ee27c0c;hp=9a9a02a0d683445911dbcc18412d93823b3d49f2;hpb=e903932500fc08b143467ce5a1c2702df35d8f0f;p=fs%2Flustre-release.git diff --git a/lustre/include/lustre_mdc.h b/lustre/include/lustre_mdc.h index 9a9a02a..ac7b0d5 100644 --- a/lustre/include/lustre_mdc.h +++ b/lustre/include/lustre_mdc.h @@ -1,7 +1,36 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * This file is part of Lustre, http://www.lustre.org + * 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.gnu.org/licenses/gpl-2.0.html + * + * GPL HEADER END + */ +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + */ +/* + * Copyright (c) 2011, 2014, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/include/lustre_mdc.h * * MDS data structures. * See also lustre_idl.h for wire formats of requests. @@ -10,27 +39,23 @@ #ifndef _LUSTRE_MDC_H #define _LUSTRE_MDC_H -#ifdef __KERNEL__ -# include -# include -# ifdef CONFIG_FS_POSIX_ACL -# ifdef HAVE_XATTR_ACL -# include -# endif /*HAVE_XATTR_ACL */ -# ifdef HAVE_LINUX_POSIX_ACL_XATTR_H -# include -# endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */ -# endif /* CONFIG_FS_POSIX_ACL */ -# ifndef HAVE_VFS_INTENT_PATCHES -# include -# endif /* HAVE_VFS_INTENT_PATCHES */ -#endif /* __KERNEL__ */ +/** \defgroup mdc mdc + * + * @{ + */ + +#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; @@ -38,51 +63,79 @@ struct obd_export; struct ptlrpc_request; struct obd_device; -struct mdc_rpc_lock { - struct semaphore rpcl_sem; - 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) { - sema_init(&lck->rpcl_sem, 1); - lck->rpcl_it = NULL; + struct client_obd *cli = &req->rq_import->imp_obd->u.cli; + __u32 opc; + __u16 tag; + + 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_get_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) { - ENTRY; - if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) { - down(&lck->rpcl_sem); - LASSERT(lck->rpcl_it == NULL); - lck->rpcl_it = it; - } + 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); } -static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck, - struct lookup_intent *it) + +/** + * 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) { - if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) { - LASSERT(it == lck->rpcl_it); - lck->rpcl_it = NULL; - up(&lck->rpcl_sem); - } - EXIT; + 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 { - struct list_head mcw_entry; - wait_queue_head_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 */ + #endif