-/* -*- 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.
* 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/
#include <dt_object.h>
#include <libcfs/libcfs.h>
-
#include <lustre_req_layout.h>
#include <lustre_fld.h>
+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,
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[];
#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)
{
}
extern cfs_proc_dir_entry_t *fld_type_proc_dir;
-
+extern struct file_operations fld_proc_seq_fops;
#endif /* __FLD_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff