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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/fs/jfs/jfs_logmgr.c
..
..
@@ -1,20 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *   Copyright (C) International Business Machines Corp., 2000-2004
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  *   Portions Copyright (C) Christoph Hellwig, 2001-2002
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- *
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- *   This program is free software;  you can redistribute it and/or modify
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- *   it under the terms of the GNU General Public License as published by
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- *   the Free Software Foundation; either version 2 of the License, or
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- *   (at your option) any later version.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
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- *   the GNU General Public License for more details.
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- *
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- *   You should have received a copy of the GNU General Public License
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- *   along with this program;  if not, write to the Free Software
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- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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5
  */
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6
 
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 /*
..
..
@@ -1092,8 +1079,7 @@
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 	mutex_lock(&jfs_log_mutex);
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 	list_for_each_entry(log, &jfs_external_logs, journal_list) {
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 		if (log->bdev->bd_dev == sbi->logdev) {
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-			if (memcmp(log->uuid, sbi->loguuid,
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-				   sizeof(log->uuid))) {
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+			if (!uuid_equal(&log->uuid, &sbi->loguuid)) {
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 				jfs_warn("wrong uuid on JFS journal");
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 				mutex_unlock(&jfs_log_mutex);
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 				return -EINVAL;
..
..
@@ -1130,7 +1116,7 @@
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 	}
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 	log->bdev = bdev;
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-	memcpy(log->uuid, sbi->loguuid, sizeof(log->uuid));
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+	uuid_copy(&log->uuid, &sbi->loguuid);
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1120
 
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 	/*
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 	 * initialize log:
..
..
@@ -1336,7 +1322,7 @@
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 			jfs_info("lmLogInit: inline log:0x%p base:0x%Lx size:0x%x",
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 				 log, (unsigned long long)log->base, log->size);
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 		} else {
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-			if (memcmp(logsuper->uuid, log->uuid, 16)) {
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+			if (!uuid_equal(&logsuper->uuid, &log->uuid)) {
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 				jfs_warn("wrong uuid on JFS log device");
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 				rc = -EINVAL;
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 				goto errout20;
..
..
@@ -1733,7 +1719,7 @@
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 	int i;
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 	struct logsuper *logsuper;
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 	struct lbuf *bpsuper;
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-	char *uuid = sbi->uuid;
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+	uuid_t *uuid = &sbi->uuid;
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1723
 
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 	/*
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 	 * insert/remove file system device to log active file system list.
..
..
@@ -1744,8 +1730,8 @@
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 	logsuper = (struct logsuper *) bpsuper->l_ldata;
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 	if (activate) {
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 		for (i = 0; i < MAX_ACTIVE; i++)
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-			if (!memcmp(logsuper->active[i].uuid, NULL_UUID, 16)) {
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-				memcpy(logsuper->active[i].uuid, uuid, 16);
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+			if (uuid_is_null(&logsuper->active[i].uuid)) {
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+				uuid_copy(&logsuper->active[i].uuid, uuid);
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 				sbi->aggregate = i;
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 				break;
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 			}
..
..
@@ -1756,8 +1742,9 @@
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 		}
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 	} else {
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 		for (i = 0; i < MAX_ACTIVE; i++)
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-			if (!memcmp(logsuper->active[i].uuid, uuid, 16)) {
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-				memcpy(logsuper->active[i].uuid, NULL_UUID, 16);
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+			if (uuid_equal(&logsuper->active[i].uuid, uuid)) {
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+				uuid_copy(&logsuper->active[i].uuid,
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+					  &uuid_null);
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 				break;
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 			}
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 		if (i == MAX_ACTIVE) {