X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ffld%2Ffld_internal.h;h=fbb050a3470d3c0f287c1d58b7e619954e4f62b5;hb=0c00b4a10c951a7a5cba075a3e8181662dab50b8;hp=7a86e2ec0d3f2fcc4f1e55ff466970f79941fc5d;hpb=6869932b552ac705f411de3362f01bd50c1f6f7d;p=fs%2Flustre-release.git diff --git a/lustre/fld/fld_internal.h b/lustre/fld/fld_internal.h index 7a86e2e..fbb050a 100644 --- a/lustre/fld/fld_internal.h +++ b/lustre/fld/fld_internal.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) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2012, 2013, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -45,10 +45,76 @@ #include #include - #include #include +enum { + LUSTRE_FLD_INIT = 1 << 0, + LUSTRE_FLD_RUN = 1 << 1 +}; + +struct fld_stats { + __u64 fst_count; + __u64 fst_cache; + __u64 fst_inflight; +}; + +typedef int (*fld_hash_func_t) (struct lu_client_fld *, __u64); + +typedef struct lu_fld_target * +(*fld_scan_func_t) (struct lu_client_fld *, __u64); + +struct lu_fld_hash { + const char *fh_name; + fld_hash_func_t fh_hash_func; + fld_scan_func_t fh_scan_func; +}; + +struct fld_cache_entry { + cfs_list_t fce_lru; + cfs_list_t fce_list; + /** + * fld cache entries are sorted on range->lsr_start field. */ + struct lu_seq_range fce_range; +}; + +struct fld_cache { + /** + * Cache guard, protects fci_hash mostly because others immutable after + * init is finished. + */ + rwlock_t fci_lock; + + /** + * Cache shrink threshold */ + int fci_threshold; + + /** + * Prefered number of cached entries */ + int fci_cache_size; + + /** + * Current number of cached entries. Protected by \a fci_lock */ + int fci_cache_count; + + /** + * LRU list fld entries. */ + cfs_list_t fci_lru; + + /** + * sorted fld entries. */ + cfs_list_t fci_entries_head; + + /** + * Cache statistics. */ + struct fld_stats fci_stat; + + /** + * Cache name used for debug and messages. */ + char fci_name[80]; + unsigned int fci_no_shrink:1; +}; + enum fld_op { FLD_CREATE = 0, FLD_DELETE = 1, @@ -71,48 +137,38 @@ enum { FLD_CLIENT_CACHE_THRESHOLD = 10 }; -enum { - /* - * One page is used for hashtable. That is sizeof(struct hlist_head) * - * 1024. - */ - FLD_CLIENT_HTABLE_SIZE = (1024 * 1), - - /* - * Here 4 pages are used for hashtable of server cache. This is is - * because cache it self is 4 times bugger. - */ - FLD_SERVER_HTABLE_SIZE = (1024 * 4) -}; - extern struct lu_fld_hash fld_hash[]; #ifdef __KERNEL__ + struct fld_thread_info { struct req_capsule *fti_pill; __u64 fti_key; - __u64 fti_rec; - __u32 fti_flags; + struct lu_seq_range fti_rec; + struct lu_seq_range fti_lrange; + struct lu_seq_range fti_irange; }; -int fld_index_init(struct lu_server_fld *fld, - const struct lu_env *env, - struct dt_device *dt); +extern struct lu_context_key fld_thread_key; + +int fld_index_init(const struct lu_env *env, struct lu_server_fld *fld, + struct dt_device *dt); -void fld_index_fini(struct lu_server_fld *fld, - const struct lu_env *env); +void fld_index_fini(const struct lu_env *env, struct lu_server_fld *fld); -int fld_index_create(struct lu_server_fld *fld, - const struct lu_env *env, - seqno_t seq, mdsno_t mds); +int fld_declare_index_create(const struct lu_env *env, + struct lu_server_fld *fld, + const struct lu_seq_range *new, + struct thandle *th); -int fld_index_delete(struct lu_server_fld *fld, - const struct lu_env *env, - seqno_t seq); +int fld_index_create(const struct lu_env *env, struct lu_server_fld *fld, + const struct lu_seq_range *new, struct thandle *th); -int fld_index_lookup(struct lu_server_fld *fld, - const struct lu_env *env, - seqno_t seq, mdsno_t *mds); +int fld_index_lookup(const struct lu_env *env, struct lu_server_fld *fld, + seqno_t seq, struct lu_seq_range *range); + +int fld_client_rpc(struct obd_export *exp, + struct lu_seq_range *range, __u32 fld_op); #ifdef LPROCFS extern struct lprocfs_vars fld_server_proc_list[]; @@ -121,6 +177,40 @@ extern struct lprocfs_vars fld_client_proc_list[]; #endif +struct fld_cache *fld_cache_init(const char *name, + int cache_size, int cache_threshold); + +void fld_cache_fini(struct fld_cache *cache); + +void fld_cache_flush(struct fld_cache *cache); + +int fld_cache_insert(struct fld_cache *cache, + const struct lu_seq_range *range); + +struct fld_cache_entry +*fld_cache_entry_create(const struct lu_seq_range *range); + +int fld_cache_insert_nolock(struct fld_cache *cache, + struct fld_cache_entry *f_new); +void fld_cache_delete(struct fld_cache *cache, + const struct lu_seq_range *range); +void fld_cache_delete_nolock(struct fld_cache *cache, + const struct lu_seq_range *range); +int fld_cache_lookup(struct fld_cache *cache, + const seqno_t seq, struct lu_seq_range *range); + +struct fld_cache_entry* +fld_cache_entry_lookup(struct fld_cache *cache, struct lu_seq_range *range); +void fld_cache_entry_delete(struct fld_cache *cache, + struct fld_cache_entry *node); +void fld_dump_cache_entries(struct fld_cache *cache); + +struct fld_cache_entry +*fld_cache_entry_lookup_nolock(struct fld_cache *cache, + struct lu_seq_range *range); +int fld_write_range(const struct lu_env *env, struct dt_object *dt, + const struct lu_seq_range *range, struct thandle *th); + static inline const char * fld_target_name(struct lu_fld_target *tar) { @@ -131,5 +221,5 @@ fld_target_name(struct lu_fld_target *tar) } extern cfs_proc_dir_entry_t *fld_type_proc_dir; - +extern struct file_operations fld_proc_seq_fops; #endif /* __FLD_INTERNAL_H */