Branch: remove fld.c

diff --git a/lustre/fld/fld.c b/lustre/fld/fld.c
deleted file mode 100644 (file)
index b41cff9..0000000
--- a/lustre/fld/fld.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/* -*- MODE: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- *  fld/fld.c 
- *
- *  Copyright (C) 2006 Cluster File Systems, Inc.
- *
- *   This file is part of the Lustre file system, http://www.lustre.org
- *   Lustre is a trademark of Cluster File Systems, Inc.
- *
- *   You may have signed or agreed to another license before downloading
- *   this software.  If so, you are bound by the terms and conditions
- *   of that agreement, and the following does not apply to you.  See the
- *   LICENSE file included with this distribution for more information.
- *
- *   If you did not agree to a different license, then this copy of Lustre
- *   is open source software; you can redistribute it and/or modify it
- *   under the terms of version 2 of the GNU General Public License as
- *   published by the Free Software Foundation.
- *
- *   In either case, Lustre 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
- *   license text for more details.
- */
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-#define DEBUG_SUBSYSTEM S_FLD
-
-#include <linux/module.h>
-
-#include <linux/obd.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_ver.h>
-#include <linux/obd_support.h>
-#include <linux/lprocfs_status.h>
-
-#include "fld_internal.h"
- 
-/*XXX maybe these 2 items should go to sbi*/
-struct fld_cache_info *fld_cache = NULL;
-
-static int dht_mdt_hash(__u64 seq)
-{
-        return 0; 
-}
-struct obd_export* get_fld_exp(struct obd_export *exp, __u64 seq)
-{
-        int seq_mds;
- 
-        seq_mds = dht_mdt_hash(seq);
-        CDEBUG(D_INFO, "mds number %d\n", seq_mds);
-       
-        /*get exp according to lu_seq*/
-        return exp;
-}
- 
-enum {
-        FLD_HTABLE_BITS = 8,
-        FLD_HTABLE_SIZE = (1 << FLD_HTABLE_BITS),
-        FLD_HTABLE_MASK = FLD_HTABLE_SIZE - 1
-};
-
-static __u32 fld_hash(__u64 lu_seq)
-{
-        return lu_seq;
-}
-
-
-static int fld_cache_insert(struct fld_cache_info *fld_cache, __u64 lu_seq, 
-                            __u64 mds_num)
-{
-        struct fld_cache *fld;
-        struct hlist_head *bucket;
-        int rc = 0;
-        ENTRY;
-
-        bucket = fld_cache->fld_hash + (fld_hash(lu_seq) &
-                                        fld_cache->fld_hash_mask);
-
-        OBD_ALLOC(fld, sizeof(*fld));
-        if (!fld)
-                RETURN(-ENOMEM);
-
-        INIT_HLIST_NODE(&fld->fld_hash);
-        fld->fld_mds = mds_num;
-        fld->fld_seq = lu_seq; 
-
-        spin_lock(&fld->fld_lock); 
-        hlist_for_each_entry(fld, scan, bucket, fld_hash) {
-                if (fld->fld_seq == lu_seq) {
-                        spin_unlock(&fld_cache->fld_lock);
-                        GOTO(exit, rc = -EEXIST);
-                }
-        }
-        hlist_add_head(&fld->fld_hash, bucket);
-        spin_unlock(&fld->fld_lock);
-exit:
-        if (rc != 0) 
-                OBD_FREE(fld, sizeof(*fld));
-        RETURN(rc);
-}
-
-static struct fld_cache* 
-fld_cache_lookup(struct fld_cache_info *fld_cache, __u64 lu_seq)
-{
-        struct hlist_head *bucket;
-        struct hlist_node *scan;
-        struct fld_cache *fld;
-        ENTRY;
-
-        bucket = fld_cache->fld_hash + (fld_hash(lu_seq) &
-                                        fld_cache->fld_hash_mask);
-       
-        spin_lock(&fld_cache->fld_lock); 
-        hlist_for_each_entry(fld, scan, bucket, fld_hash) {
-                if (fld->fld_seq == lu_seq) {
-                        spin_unlock(&fld_cache->fld_lock);
-                        RETURN(fld);
-                }
-        }
-        spin_unlock(&fld_cache->fld_lock);
-
-        RETURN(NULL);
-}
-
-static void fld_cache_delete(struct fld_cache_info *fld_cache, __u64 lu_seq)
-{
-        struct hlist_head *bucket;
-        struct hlist_node *scan;
-        struct fld_cache *fld;
-        ENTRY;
-
-        bucket = fld_cache->fld_hash + (fld_hash(lu_seq) &
-                                        fld_cache->fld_hash_mask);
-       
-        spin_lock(&fld_cache->fld_lock); 
-        hlist_for_each_entry(fld, scan, bucket, fld_hash) {
-                if (fld->fld_seq == lu_seq) {
-                        hlist_del_init(&fld->fld_hash);
-                        spin_unlock(&fld_cache->fld_lock);
-                        EXIT;
-                        return;
-                }
-        }
-        spin_unlock(&fld_cache->fld_lock);
-        return;
-}
-
-static int fld_create(struct obd_export *exp, __u64 seq, __u64 mds_num)
-{
-        struct obd_export *fld_exp;
-        __u32 rc;
-        ENTRY;
-
-        fld_exp = get_fld_exp(exp, seq);
-        if (!fld_exp)
-                RETURN(-EINVAL);
-
-        rc = mdc_fld_create(fld_exp, mds_num, seq, FLD_CREATE);
-
-        fld_cache_insert(fld_cache, seq, mds_num);
-
-        RETURN(rc);
-}
-
-static int fld_delete(struct obd_export *exp, __u64 seq, __u64 mds_num)
-{
-        struct obd_export *fld_exp;
-
-        
-        fld_cache_delete(fld_cache, seq);
-
-        fld_exp = get_fld_exp(exp, seq);
-        if (!fld_exp)
-                RETURN(-EINVAL);
-
-        /*delete the entry in the hash*/
-
-        rc = mdc_fld_req(fld_exp, seq, mds_num, FLD_DELETE);
-
-        RETURN(rc);
-}
-
-static int fld_get(struct obd_export *exp, __u64 lu_seq, __u64 *mds_num)
-{
-        struct obd_export *fld_exp;
- 
-        fld_exp = get_fld_exp(fld_exp, seq_mds);
-        if (!fld_exp);
-                RETURN(-EINVAL);
-
-        rc = mdc_fld_req(fld_exp, seq, mds_num, FLD_GET);
-
-        RETURN(rc);
-}
-
-/*lookup fid in the namespace of pfid according to the name*/
-static int fld_lookup(struct obd_export *exp, __u64 lu_seq, __u64 *mds_num)
-{
-        struct fld_cache *fld; 
-        __u32 seq_mds = -1;
-        int rc = 0;
-        ENTRY;
-
-        /*lookup it in the cache*/
-        fld = fld_cache_lookup(fld_cache, lu_seq);
-        if (fld != NULL) {
-                *mds_num = fld->fld_mds;
-                RETURN(rc);
-        }
-        /*can not find it in the cache*/ 
-        rc = fld_get(exp, lu_seq, mds_num);
-        if (rc)
-                RETURN(rc); 
-       
-        rc = fld_cache_insert(fld_cache, lu_seq, mds_num);
- 
-        RETURN(rc);
-}
-
-static int fld_init()
-{
-        int rc;
-        ENTRY;
-
-        OBD_ALLOC(fld_cache, sizeof(*fld_cache));
-        if (fld_cache == NULL)
-                RETURN(-ENOMEM);        
-       
-        /*init fld cache info*/
-        fld_cache->fld_hash_mask = FLD_HTABLE_MASK;
-        OBD_ALLOC(fld_cache->fld_hash, FLD_HTABLE_SIZE * 
-                                       sizeof fld_cache->fld_hash[0]);
-        spin_lock_init(&fld_cache->fld_lock);
-}
-
-static int fld_fini()
-{
-        int rc;
-        ENTRY;
-        
-        if (fld_cache != NULL) {
-                OBD_FREE(fld_cache->fld_hash, FLD_HTABLE_SIZE *
-                                              sizeof fld_cache->fld_hash[0]);
-                OBD_FREE(fld_cache, sizeof(*fld_cache));
-        }
-}
-
-static int __init fld_mod_init(void)
-{
-        fld_init();
-        return 0;
-}
-
-static void __exit fld_mod_exit(void)
-{
-        fld_fini();
-}
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre fld Prototype");
-MODULE_LICENSE("GPL");
-
-cfs_module(mdd, "0.0.2", fld_mod_init, fld_mod_exit);