[PATCH] remember mode of reiserfs journal

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/reiserfs/journal.c

@@ -2575,7 +2575,7 @@ static int release_journal_dev(struct super_block *super,
 	if (journal->j_dev_bd != NULL) {
 		if (journal->j_dev_bd->bd_dev != super->s_dev)
 			bd_release(journal->j_dev_bd);
-		result = blkdev_put(journal->j_dev_bd, 0); /* move up */
+		result = blkdev_put(journal->j_dev_bd, journal->j_dev_mode);
 		journal->j_dev_bd = NULL;
 	}
 
@@ -2608,6 +2608,7 @@ static int journal_init_dev(struct super_block *super,
 	/* there is no "jdev" option and journal is on separate device */
 	if ((!jdev_name || !jdev_name[0])) {
 		journal->j_dev_bd = open_by_devnum(jdev, blkdev_mode);
+		journal->j_dev_mode = blkdev_mode;
 		if (IS_ERR(journal->j_dev_bd)) {
 			result = PTR_ERR(journal->j_dev_bd);
 			journal->j_dev_bd = NULL;
@@ -2628,8 +2629,9 @@ static int journal_init_dev(struct super_block *super,
 		return 0;
 	}
 
+	journal->j_dev_mode = blkdev_mode;
 	journal->j_dev_bd = open_bdev_exclusive(jdev_name,
-						FMODE_READ|FMODE_WRITE, journal);
+						blkdev_mode, journal);
 	if (IS_ERR(journal->j_dev_bd)) {
 		result = PTR_ERR(journal->j_dev_bd);
 		journal->j_dev_bd = NULL;

include/linux/reiserfs_fs_sb.h

@@ -178,6 +178,7 @@ struct reiserfs_journal {
 	struct reiserfs_journal_cnode *j_first;	/*  oldest journal block.  start here for traverse */
 
 	struct block_device *j_dev_bd;
+	fmode_t j_dev_mode;
 	int j_1st_reserved_block;	/* first block on s_dev of reserved area journal */
 
 	unsigned long j_state;