USB-BKL: Remove lock_kernel in usbfs update_sb()

The code this is attempting to lock against does not use the BKL,
so it's not needed.

Most likely this code is still broken/racy (Al Viro also thinks so),
but removing the BKL should not make it worse than before.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 1a27618b67d61dec116025db0a35e015a1569c7f..095fa53666909e02e2325badb15bfe5f63dc139b 100644 (file)
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -265,13 +265,9 @@ static int remount(struct super_block *sb, int *flags, char *data)
                return -EINVAL;
        }
 
-       lock_kernel();
-
        if (usbfs_mount && usbfs_mount->mnt_sb)
                update_sb(usbfs_mount->mnt_sb);
 
-       unlock_kernel();
-
        return 0;
 }