j_flush_sem is a semaphore but uses it as if it were a mutex. This
patch converts it to a mutex.

Signed-off-by: Jeff Mahoney
---
fs/reiserfs/journal.c | 14 +++++++-------
include/linux/reiserfs_fs_sb.h | 2 +-
include/linux/reiserfs_fs_sb.h~ | 2 +-
3 files changed, 9 insertions(+), 9 deletions(-)

--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -1411,8 +1411,8 @@ static int flush_journal_list(struct sup

/* if flushall == 0, the lock is already held */
if (flushall) {
- down(&journal->j_flush_sem);
- } else if (!down_trylock(&journal->j_flush_sem)) {
+ mutex_lock(&journal->j_flush_mutex);
+ } else if (!mutex_trylock(&journal->j_flush_mutex)) {
BUG();
}

@@ -1642,7 +1642,7 @@ static int flush_journal_list(struct sup
jl->j_state = 0;
put_journal_list(s, jl);
if (flushall)
- up(&journal->j_flush_sem);
+ mutex_unlock(&journal->j_flush_mutex);
put_fs_excl();
return err;
}
@@ -1772,12 +1772,12 @@ static int kupdate_transactions(struct s
struct reiserfs_journal *journal = SB_JOURNAL(s);
chunk.nr = 0;

- down(&journal->j_flush_sem);
+ mutex_lock(&journal->j_flush_mutex);
if (!journal_list_still_alive(s, orig_trans_id)) {
goto done;
}

- /* we've got j_flush_sem held, nobody is going to delete any
+ /* we've got j_flush_mutex held, nobody is going to delete any
* of these lists out from underneath us
*/
while ((num_trans && transactions_flushed < num_trans) ||
@@ -1812,7 +1812,7 @@ static int kupdate_transactions(struct s
}

done:
- up(&journal->j_flush_sem);
+ mutex_unlock(&journal->j_flush_mutex);
return ret;
}

@@ -2842,7 +2842,7 @@ int journal_init(struct super_block *p_s
journal->j_first = NULL;
init_waitqueue_head(&(journal->j_join_wait));
mutex_init(&journal->j_mutex);
- sema_init(&journal->j_flush_sem, 1);
+ mutex_init(&journal->j_flush_mutex);

journal->j_trans_id = 10;
journal->j_mount_id = 10;
--- a/include/linux/reiserfs_fs_sb.h
+++ b/include/linux/reiserfs_fs_sb.h
@@ -195,7 +195,7 @@ struct reiserfs_journal {

time_t j_trans_start_time; /* time this transaction started */
struct mutex j_mutex;
- struct semaphore j_flush_sem;
+ struct mutex j_flush_mutex;
wait_queue_head_t j_join_wait; /* wait for current transaction to finish before starting new one */
atomic_t j_jlock; /* lock for j_join_wait */
int j_list_bitmap_index; /* number of next list bitmap to use */

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