X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flclient.h;h=dd782eee62a2b27fadba2e413b8d4c13a22f3598;hb=edcfea9753bd31d2cf2ebec6fe5f46ad763f7cc3;hp=e81f7e01741086a77e6b57fe2f2724543489adfb;hpb=62ef9c949753efb9535fa5b1eb2eb38ec663917f;p=fs%2Flustre-release.git diff --git a/lustre/include/lclient.h b/lustre/include/lclient.h index e81f7e0..dd782ee 100644 --- a/lustre/include/lclient.h +++ b/lustre/include/lclient.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. @@ -26,8 +24,10 @@ * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Copyright (c) 2008, 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/ @@ -43,20 +43,32 @@ #ifndef LCLIENT_H #define LCLIENT_H -int cl_glimpse_size(struct inode *inode); +blkcnt_t dirty_cnt(struct inode *inode); + +int cl_glimpse_size0(struct inode *inode, int agl); int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io, - struct inode *inode, struct cl_object *clob); + struct inode *inode, struct cl_object *clob, int agl); + +static inline int cl_glimpse_size(struct inode *inode) +{ + return cl_glimpse_size0(inode, 0); +} + +static inline int cl_agl(struct inode *inode) +{ + return cl_glimpse_size0(inode, 1); +} /** - * Locking policy for truncate. + * Locking policy for setattr. */ -enum ccc_trunc_lock_type { +enum ccc_setattr_lock_type { /** Locking is done by server */ - TRUNC_NOLOCK, + SETATTR_NOLOCK, /** Extent lock is enqueued */ - TRUNC_EXTENT, + SETATTR_EXTENT_LOCK, /** Existing local extent lock is used */ - TRUNC_MATCH + SETATTR_MATCH_LOCK }; @@ -87,21 +99,22 @@ struct ccc_io { union { struct { - int cui_locks_released; - enum ccc_trunc_lock_type cui_local_lock; - } trunc; + enum ccc_setattr_lock_type cui_local_lock; + } setattr; } u; /** * True iff io is processing glimpse right now. */ int cui_glimpse; + /** + * Layout version when this IO is initialized + */ + __u32 cui_layout_gen; /** * File descriptor against which IO is done. */ struct ll_file_data *cui_fd; -#ifndef HAVE_FILE_WRITEV struct kiocb *cui_iocb; -#endif }; /** @@ -135,6 +148,13 @@ static inline struct cl_attr *ccc_env_thread_attr(const struct lu_env *env) return attr; } +static inline struct cl_io *ccc_env_thread_io(const struct lu_env *env) +{ + struct cl_io *io = &ccc_env_info(env)->cti_io; + memset(io, 0, sizeof(*io)); + return io; +} + struct ccc_session { struct ccc_io cs_ios; }; @@ -167,7 +187,7 @@ struct ccc_object { * * \see ccc_page::cpg_pending_linkage */ - struct list_head cob_pending_list; + cfs_list_t cob_pending_list; /** * Access this counter is protected by inode->i_sem. Now that @@ -180,7 +200,19 @@ struct ccc_object { * * \see ll_vm_open(), ll_vm_close(). */ - atomic_t cob_mmap_cnt; + cfs_atomic_t cob_mmap_cnt; + + /** + * various flags + * cob_discard_page_warned + * if pages belonging to this object are discarded when a client + * is evicted, some debug info will be printed, this flag will be set + * during processing the first discarded page, then avoid flooding + * debug message for lots of discarded pages. + * + * \see ll_dirty_page_discard_warn. + */ + unsigned int cob_discard_page_warned:1; }; /** @@ -198,18 +230,9 @@ struct ccc_page { * that is, never iterated through, only checked for list_empty(), but * having a list is useful for debugging. */ - struct list_head cpg_pending_linkage; + cfs_list_t cpg_pending_linkage; /** VM page */ - cfs_page_t *cpg_page; - /** - * checksum for paranoid I/O debugging enabled by - * ENABLE_LLITE_CHECKSUM configuration option. - * - * XXX This cannot be implemented reliably because checksum cannot be - * updated from ->set_page_dirty() that is called without page VM - * lock. - */ - __u32 cpg_checksum; + struct page *cpg_page; }; static inline struct ccc_page *cl2ccc_page(const struct cl_page_slice *slice) @@ -217,7 +240,7 @@ static inline struct ccc_page *cl2ccc_page(const struct cl_page_slice *slice) return container_of(slice, struct ccc_page, cpg_cl); } -struct cl_page *ccc_vmpage_page_transient(cfs_page_t *vmpage); +struct cl_page *ccc_vmpage_page_transient(struct page *vmpage); struct ccc_device { struct cl_device cdv_cl; @@ -279,7 +302,7 @@ int ccc_object_glimpse(const struct lu_env *env, const struct cl_object *obj, struct ost_lvb *lvb); int ccc_conf_set(const struct lu_env *env, struct cl_object *obj, const struct cl_object_conf *conf); -cfs_page_t *ccc_page_vmpage(const struct lu_env *env, +struct page *ccc_page_vmpage(const struct lu_env *env, const struct cl_page_slice *slice); int ccc_page_is_under_lock(const struct lu_env *env, const struct cl_page_slice *slice, struct cl_io *io); @@ -331,8 +354,7 @@ void ccc_io_advance(const struct lu_env *env, const struct cl_io_slice *ios, void ccc_io_update_iov(const struct lu_env *env, struct ccc_io *cio, struct cl_io *io); int ccc_prep_size(const struct lu_env *env, struct cl_object *obj, - struct cl_io *io, loff_t start, size_t count, int vfslock, - int *exceed); + struct cl_io *io, loff_t start, size_t count, int *exceed); void ccc_req_completion(const struct lu_env *env, const struct cl_req_slice *slice, int ioret); void ccc_req_attr_set(const struct lu_env *env,const struct cl_req_slice *slice, @@ -349,25 +371,24 @@ struct ccc_lock *cl2ccc_lock (const struct cl_lock_slice *slice); struct ccc_io *cl2ccc_io (const struct lu_env *env, const struct cl_io_slice *slice); struct ccc_req *cl2ccc_req (const struct cl_req_slice *slice); -cfs_page_t *cl2vm_page (const struct cl_page_slice *slice); +struct page *cl2vm_page (const struct cl_page_slice *slice); struct inode *ccc_object_inode(const struct cl_object *obj); struct ccc_object *cl_inode2ccc (struct inode *inode); -int cl_setattr_do_truncate(struct inode *inode, loff_t size, - struct obd_capa *capa); -int cl_setattr_ost(struct inode *inode, struct obd_capa *capa); +int cl_setattr_ost(struct inode *inode, const struct iattr *attr, + struct obd_capa *capa); -struct cl_page *ccc_vmpage_page_transient(cfs_page_t *vmpage); +struct cl_page *ccc_vmpage_page_transient(struct page *vmpage); int ccc_object_invariant(const struct cl_object *obj); -int cl_inode_init(struct inode *inode, struct lustre_md *md); +int cl_file_inode_init(struct inode *inode, struct lustre_md *md); void cl_inode_fini(struct inode *inode); int cl_local_size(struct inode *inode); __u16 ll_dirent_type_get(struct lu_dirent *ent); -ino_t cl_fid_build_ino(const struct lu_fid *fid); +__u64 cl_fid_build_ino(const struct lu_fid *fid, int api32); __u32 cl_fid_build_gen(const struct lu_fid *fid); -#ifdef INVARIANT_CHECK +#ifdef CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK # define CLOBINVRNT(env, clob, expr) \ do { \ if (unlikely(!(expr))) { \ @@ -375,10 +396,10 @@ __u32 cl_fid_build_gen(const struct lu_fid *fid); LINVRNT(0); \ } \ } while (0) -#else /* !INVARIANT_CHECK */ +#else /* !CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK */ # define CLOBINVRNT(env, clob, expr) \ - ((void)sizeof(env), (void)sizeof(clob), (void)sizeof !!(expr)) -#endif /* !INVARIANT_CHECK */ + ((void)sizeof(env), (void)sizeof(clob), (void)sizeof !!(expr)) +#endif /* !CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK */ int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp); int cl_ocd_update(struct obd_device *host, @@ -387,6 +408,7 @@ int cl_ocd_update(struct obd_device *host, struct ccc_grouplock { struct lu_env *cg_env; + struct cl_io *cg_io; struct cl_lock *cg_lock; unsigned long cg_gid; }; @@ -395,4 +417,31 @@ int cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock, struct ccc_grouplock *cg); void cl_put_grouplock(struct ccc_grouplock *cg); +/** + * New interfaces to get and put lov_stripe_md from lov layer. This violates + * layering because lov_stripe_md is supposed to be a private data in lov. + * + * NB: If you find you have to use these interfaces for your new code, please + * think about it again. These interfaces may be removed in the future for + * better layering. */ +struct lov_stripe_md *lov_lsm_get(struct cl_object *clobj); +void lov_lsm_put(struct cl_object *clobj, struct lov_stripe_md *lsm); +int lov_read_and_clear_async_rc(struct cl_object *clob); + +struct lov_stripe_md *ccc_inode_lsm_get(struct inode *inode); +void ccc_inode_lsm_put(struct inode *inode, struct lov_stripe_md *lsm); + +/** + * Data structure managing a client's cached clean pages. An LRU of + * pages is maintained, along with other statistics. + */ +struct cl_client_cache { + cfs_atomic_t ccc_users; /* # of users (OSCs) of this data */ + cfs_list_t ccc_lru; /* LRU list of cached clean pages */ + spinlock_t ccc_lru_lock; /* lock for list */ + cfs_atomic_t ccc_lru_left; /* # of LRU entries available */ + unsigned long ccc_lru_max; /* Max # of LRU entries possible */ + unsigned int ccc_lru_shrinkers; /* # of threads reclaiming */ +}; + #endif /*LCLIENT_H */