*
* Copyright (C) 2002, 2003 Cluster File Systems, Inc.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of Cluster File Systems, Inc.
*
- * Lustre is free 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.
+ * 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.
*
- * 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
- * GNU General Public License for more details.
+ * 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.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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 DEBUG_SUBSYSTEM S_LOV
#ifdef __KERNEL__
-#include <asm/div64.h>
+#include <libcfs/libcfs.h>
#else
#include <liblustre.h>
#endif
-#include <linux/obd_class.h>
-#include <linux/obd_lov.h>
+#include <obd_class.h>
+#include <obd_lov.h>
#include "lov_internal.h"
int stripeno)
{
unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_size;
+ unsigned long swidth, stripe_size;
+ int sindex = stripeno;
obd_size lov_size;
+ int magic = lsm->lsm_magic;
ENTRY;
if (ost_size == 0)
RETURN(0);
+ LASSERT(lsm_op_find(magic) != NULL);
+ lsm_op_find(magic)->lsm_stripe_by_index(lsm, &stripeno, NULL, &swidth);
+
/* do_div(a, b) returns a % b, and a = a / b */
stripe_size = do_div(ost_size, ssize);
if (stripe_size)
else
lov_size = (ost_size - 1) * swidth + (stripeno + 1) * ssize;
+ lov_size += lsm_op_find(magic)->lsm_stripe_offset_by_index(lsm, sindex);
RETURN(lov_size);
}
int stripeno, obd_off *obd_off)
{
unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_off, this_stripe;
+ unsigned long swidth, stripe_off, this_stripe;
+ __u64 l_off, s_off;
+ int magic = lsm->lsm_magic;
int ret = 0;
if (lov_off == OBD_OBJECT_EOF) {
return 0;
}
+ LASSERT(lsm_op_find(magic) != NULL);
+ /*It will check whether the lov_off and stripeno
+ *are in the same extent.
+ *1) lov_off extent < stripeno extent, ret = -1, obd_off = 0
+ *2) lov_off extent > stripeno extent, ret = 1,
+ * obd_off = lov_off extent offset*/
+ l_off = lsm_op_find(magic)->lsm_stripe_offset_by_index(lsm, stripeno);
+ s_off = lsm_op_find(magic)->lsm_stripe_offset_by_offset(lsm, lov_off);
+ if (s_off < l_off) {
+ ret = -1;
+ *obd_off = 0;
+ return ret;
+ } else if (s_off > l_off) {
+ ret = 1;
+ *obd_off = s_off;
+ return ret;
+ }
+ /*If they are in the same extent, original logic*/
+ lsm_op_find(magic)->lsm_stripe_by_index(lsm, &stripeno, &lov_off,
+ &swidth);
+
/* do_div(a, b) returns a % b, and a = a / b */
stripe_off = do_div(lov_off, swidth);
int stripeno)
{
unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_off, this_stripe;
+ unsigned long swidth, stripe_off, this_stripe;
+ int magic = lsm->lsm_magic;
if (file_size == OBD_OBJECT_EOF)
return OBD_OBJECT_EOF;
+ LASSERT(lsm_op_find(magic) != NULL);
+ lsm_op_find(magic)->lsm_stripe_by_index(lsm, &stripeno, &file_size,
+ &swidth);
+
/* do_div(a, b) returns a % b, and a = a / b */
stripe_off = do_div(file_size, swidth);
int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off)
{
unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_off;
+ unsigned long swidth, stripe_off;
+ obd_off offset = lov_off;
+ int magic = lsm->lsm_magic;
+
+ LASSERT(lsm_op_find(magic) != NULL);
+ lsm_op_find(magic)->lsm_stripe_by_offset(lsm, NULL, &lov_off, &swidth);
stripe_off = do_div(lov_off, swidth);
- return stripe_off / ssize;
+ return (stripe_off/ssize +
+ lsm_op_find(magic)->lsm_stripe_index_by_offset(lsm, offset));
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff