hpfs: Convert sbi->hpfs_creation_de to mutex

sbi->hpfs_creation_de is used as mutex so make it a mutex.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
LKML-Reference: <20100907125056.228874895@linutronix.de>

fs/hpfs/buffer.c

@@ -14,7 +14,7 @@ void hpfs_lock_creation(struct super_block *s)
 #ifdef DEBUG_LOCKS
 	printk("lock creation\n");
 #endif
-	down(&hpfs_sb(s)->hpfs_creation_de);
+	mutex_lock(&hpfs_sb(s)->hpfs_creation_de);
 }
 
 void hpfs_unlock_creation(struct super_block *s)
@@ -22,7 +22,7 @@ void hpfs_unlock_creation(struct super_block *s)
 #ifdef DEBUG_LOCKS
 	printk("unlock creation\n");
 #endif
-	up(&hpfs_sb(s)->hpfs_creation_de);
+	mutex_unlock(&hpfs_sb(s)->hpfs_creation_de);
 }
 
 /* Map a sector into a buffer and return pointers to it and to the buffer. */

fs/hpfs/hpfs_fn.h

@@ -87,7 +87,7 @@ struct hpfs_sb_info {
 	unsigned *sb_bmp_dir;		/* main bitmap directory */
 	unsigned sb_c_bitmap;		/* current bitmap */
 	unsigned sb_max_fwd_alloc;	/* max forwad allocation */
-	struct semaphore hpfs_creation_de; /* when creating dirents, nobody else
+	struct mutex hpfs_creation_de;	/* when creating dirents, nobody else
 					   can alloc blocks */
 	/*unsigned sb_mounting : 1;*/
 	int sb_timeshift;

fs/hpfs/super.c

@@ -491,7 +491,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	sbi->sb_bmp_dir = NULL;
 	sbi->sb_cp_table = NULL;
 
-	init_MUTEX(&sbi->hpfs_creation_de);
+	mutex_init(&sbi->hpfs_creation_de);
 
 	uid = current_uid();
 	gid = current_gid();