Creating new a new super_block vs freeing the old one for single instance
file systems is serialized by the wait for SB_DEAD.
Remove the superfluous sb_mutex.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/usb/gadget/legacy/inode.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index ce9e31f3d26bcc..a203266bc0dc82 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -229,7 +229,6 @@ static void put_ep (struct ep_data *data)
*/
static const char *CHIP;
-static DEFINE_MUTEX(sb_mutex); /* Serialize superblock operations */
/*----------------------------------------------------------------------*/
@@ -2012,8 +2011,6 @@ gadgetfs_fill_super (struct super_block *sb, struct fs_context *fc)
struct dev_data *dev;
int rc;
- mutex_lock(&sb_mutex);
-
if (the_device) {
rc = -ESRCH;
goto Done;
@@ -2069,7 +2066,6 @@ gadgetfs_fill_super (struct super_block *sb, struct fs_context *fc)
rc = -ENOMEM;
Done:
- mutex_unlock(&sb_mutex);
return rc;
}
@@ -2092,7 +2088,6 @@ static int gadgetfs_init_fs_context(struct fs_context *fc)
static void
gadgetfs_kill_sb (struct super_block *sb)
{
- mutex_lock(&sb_mutex);
kill_litter_super (sb);
if (the_device) {
put_dev (the_device);
@@ -2100,7 +2095,6 @@ gadgetfs_kill_sb (struct super_block *sb)
}
kfree(CHIP);
CHIP = NULL;
- mutex_unlock(&sb_mutex);
}
/*----------------------------------------------------------------------*/
--
2.39.2
