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-rw-r--r--include/linux/nbd.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/nbd.h b/include/linux/nbd.h
index f95d51fae73..a6ce409ec6f 100644
--- a/include/linux/nbd.h
+++ b/include/linux/nbd.h
@@ -38,6 +38,7 @@ enum {
#ifdef __KERNEL__
#include <linux/wait.h>
+#include <linux/mutex.h>
/* values for flags field */
#define NBD_READ_ONLY 0x0001
@@ -57,7 +58,7 @@ struct nbd_device {
struct request *active_req;
wait_queue_head_t active_wq;
- struct semaphore tx_lock;
+ struct mutex tx_lock;
struct gendisk *disk;
int blksize;
u64 bytesize;