block: make blkdev_get/put() handle exclusive access

[linux-2.6-block.git] / fs / reiserfs / journal.c

diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 076c8b19468297dc71add1987b249ab054d6e20d..b488136f5ace7da629b5b96708947dc56e30ba5a 100644 (file)
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2552,8 +2552,6 @@ static int release_journal_dev(struct super_block *super,
        result = 0;
 
        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, journal->j_dev_mode);
                journal->j_dev_bd = NULL;
        }
@@ -2571,7 +2569,7 @@ static int journal_init_dev(struct super_block *super,
 {
        int result;
        dev_t jdev;
-       fmode_t blkdev_mode = FMODE_READ | FMODE_WRITE;
+       fmode_t blkdev_mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
        char b[BDEVNAME_SIZE];
 
        result = 0;
@@ -2585,7 +2583,9 @@ 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);
+               if (jdev == super->s_dev)
+                       blkdev_mode &= ~FMODE_EXCL;
+               journal->j_dev_bd = open_by_devnum(jdev, blkdev_mode, journal);
                journal->j_dev_mode = blkdev_mode;
                if (IS_ERR(journal->j_dev_bd)) {
                        result = PTR_ERR(journal->j_dev_bd);
@@ -2594,15 +2594,8 @@ static int journal_init_dev(struct super_block *super,
                                         "cannot init journal device '%s': %i",
                                         __bdevname(jdev, b), result);
                        return result;
-               } else if (jdev != super->s_dev) {
-                       result = bd_claim(journal->j_dev_bd, journal);
-                       if (result) {
-                               blkdev_put(journal->j_dev_bd, blkdev_mode);
-                               return result;
-                       }
-
+               } else if (jdev != super->s_dev)
                        set_blocksize(journal->j_dev_bd, super->s_blocksize);
-               }
 
                return 0;
        }