[PATCH] sem2mutex: jbd, j_checkpoint_mutex

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 10 insertions, 9 deletions

diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 543ed543d1e5..3f5102b069db 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -85,7 +85,7 @@ void __log_wait_for_space(journal_t *journal)
                 if (journal->j_flags & JFS_ABORT)
                         return;
                 spin_unlock(&journal->j_state_lock);
-                down(&journal->j_checkpoint_sem);
+                mutex_lock(&journal->j_checkpoint_mutex);
 
                 /*
                  * Test again, another process may have checkpointed while we
@@ -98,7 +98,7 @@ void __log_wait_for_space(journal_t *journal)
                         log_do_checkpoint(journal);
                         spin_lock(&journal->j_state_lock);
                 }
-                up(&journal->j_checkpoint_sem);
+                mutex_unlock(&journal->j_checkpoint_mutex);
         }
 }
 
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index e4b516ac4989..95a628d8cac8 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -659,8 +659,8 @@ static journal_t * journal_init_common (void)
         init_waitqueue_head(&journal->j_wait_checkpoint);
         init_waitqueue_head(&journal->j_wait_commit);
         init_waitqueue_head(&journal->j_wait_updates);
-        init_MUTEX(&journal->j_barrier);
-        init_MUTEX(&journal->j_checkpoint_sem);
+        mutex_init(&journal->j_barrier);
+        mutex_init(&journal->j_checkpoint_mutex);
         spin_lock_init(&journal->j_revoke_lock);
         spin_lock_init(&journal->j_list_lock);
         spin_lock_init(&journal->j_state_lock);
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index ca917973c2c0..5fc40888f4cf 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -455,7 +455,7 @@ void journal_lock_updates(journal_t *journal)
          * to make sure that we serialise special journal-locked operations
          * too.
          */
-        down(&journal->j_barrier);
+        mutex_lock(&journal->j_barrier);
 }
 
 /**
@@ -470,7 +470,7 @@ void journal_unlock_updates (journal_t *journal)
 {
         J_ASSERT(journal->j_barrier_count != 0);
 
-        up(&journal->j_barrier);
+        mutex_unlock(&journal->j_barrier);
         spin_lock(&journal->j_state_lock);
         --journal->j_barrier_count;
         spin_unlock(&journal->j_state_lock);
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 41ee79962bb2..2ccbfb6340ba 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -28,6 +28,7 @@
 #include <linux/journal-head.h>
 #include <linux/stddef.h>
 #include <linux/bit_spinlock.h>
+#include <linux/mutex.h>
 #include <asm/semaphore.h>
 #endif
 
@@ -575,7 +576,7 @@ struct transaction_s
  * @j_wait_checkpoint:  Wait queue to trigger checkpointing
  * @j_wait_commit: Wait queue to trigger commit
  * @j_wait_updates: Wait queue to wait for updates to complete
- * @j_checkpoint_sem: Semaphore for locking against concurrent checkpoints
+ * @j_checkpoint_mutex: Mutex for locking against concurrent checkpoints
  * @j_head: Journal head - identifies the first unused block in the journal
  * @j_tail: Journal tail - identifies the oldest still-used block in the
  *  journal.
@@ -645,7 +646,7 @@ struct journal_s
         int                     j_barrier_count;
 
         /* The barrier lock itself */
-        struct semaphore        j_barrier;
+        struct mutex            j_barrier;
 
         /*
          * Transactions: The current running transaction...
@@ -687,7 +688,7 @@ struct journal_s
         wait_queue_head_t       j_wait_updates;
 
         /* Semaphore for locking against concurrent checkpoints */
-        struct semaphore        j_checkpoint_sem;
+        struct mutex            j_checkpoint_mutex;
 
         /*
          * Journal head: identifies the first unused block in the journal.