j_lock 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 | 6 +++---
include/linux/reiserfs_fs_sb.h | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)

--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -558,13 +558,13 @@ static inline void insert_journal_hash(s
static inline void lock_journal(struct super_block *p_s_sb)
{
PROC_INFO_INC(p_s_sb, journal.lock_journal);
- down(&SB_JOURNAL(p_s_sb)->j_lock);
+ mutex_lock(&SB_JOURNAL(p_s_sb)->j_mutex);
}

/* unlock the current transaction */
static inline void unlock_journal(struct super_block *p_s_sb)
{
- up(&SB_JOURNAL(p_s_sb)->j_lock);
+ mutex_unlock(&SB_JOURNAL(p_s_sb)->j_mutex);
}

static inline void get_journal_list(struct reiserfs_journal_list *jl)
@@ -2841,7 +2841,7 @@ int journal_init(struct super_block *p_s
journal->j_last = NULL;
journal->j_first = NULL;
init_waitqueue_head(&(journal->j_join_wait));
- sema_init(&journal->j_lock, 1);
+ mutex_init(&journal->j_mutex);
sema_init(&journal->j_flush_sem, 1);

journal->j_trans_id = 10;
--- a/include/linux/reiserfs_fs_sb.h
+++ b/include/linux/reiserfs_fs_sb.h
@@ -194,7 +194,7 @@ struct reiserfs_journal {
struct buffer_head *j_header_bh;

time_t j_trans_start_time; /* time this transaction started */
- struct semaphore j_lock;
+ struct mutex j_mutex;
struct semaphore j_flush_sem;
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 */

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