X-Git-Url: http://bbs.cooldavid.org/git/?a=blobdiff_plain;f=drivers%2Fblock%2Faoe%2Faoeblk.c;h=f21c237a9e5e124a07c205c9770379831df6d8a4;hb=2a48fc0ab24241755dc93bfd4f01d68efab47f5a;hp=a946929735a5818e525c14e97b9011913f9e54f9;hpb=613655fa39ff6957754fa8ceb8559980920eb8ee;p=net-next-2.6.git

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index a946929735a..f21c237a9e5 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -12,9 +12,10 @@
 #include <linux/slab.h>
 #include <linux/genhd.h>
 #include <linux/netdevice.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include "aoe.h"
 
+static DEFINE_MUTEX(aoeblk_mutex);
 static struct kmem_cache *buf_pool_cache;
 
 static ssize_t aoedisk_show_state(struct device *dev,
@@ -125,16 +126,16 @@ aoeblk_open(struct block_device *bdev, fmode_t mode)
 	struct aoedev *d = bdev->bd_disk->private_data;
 	ulong flags;
 
-	lock_kernel();
+	mutex_lock(&aoeblk_mutex);
 	spin_lock_irqsave(&d->lock, flags);
 	if (d->flags & DEVFL_UP) {
 		d->nopen++;
 		spin_unlock_irqrestore(&d->lock, flags);
-		unlock_kernel();
+		mutex_unlock(&aoeblk_mutex);
 		return 0;
 	}
 	spin_unlock_irqrestore(&d->lock, flags);
-	unlock_kernel();
+	mutex_unlock(&aoeblk_mutex);
 	return -ENODEV;
 }