linux-kernel - [PATCH] ubd: Remove unused mutex 'ubd

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Date: Sun,  5 May 2024 01:15:08 +0100
From: linux@...blig.org
To: richard@....at,
	hch@....de
Cc: linux-um@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH] ubd: Remove unused mutex 'ubd_mutex'

From: "Dr. David Alan Gilbert" <linux@...blig.org>

Commit fb5d1d389c9e ("ubd: open the backing files in ubd_add")

removed the last use of ubd_mutex.
Remove it.

Build and kernel startup test only.

Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
 arch/um/drivers/ubd_kern.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 63fc062add708..2b855240fbabf 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -106,7 +106,6 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data)
 #define DRIVER_NAME "uml-blkdev"
 
 static DEFINE_MUTEX(ubd_lock);
-static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */
 
 static int ubd_ioctl(struct block_device *bdev, blk_mode_t mode,
 		     unsigned int cmd, unsigned long arg);
-- 
2.45.0