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Fix the non-debug mutex_lock_io_nested() method to map to mutex_lock_io() instead of mutex_lock(). 

Right now nothing uses this API explicitly, but this is an accident waiting to happen.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2021-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fix from Ingo Molnar:
 "Fix the non-debug mutex_lock_io_nested() method to map to
  mutex_lock_io() instead of mutex_lock().

  Right now nothing uses this API explicitly, but this is an
  accident waiting to happen"

* tag 'locking-urgent-2021-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/mutex: Fix non debug version of mutex_lock_io_nested()
This commit is contained in:
Linus Torvalds 2021-03-28 12:12:22 -07:00
parent 81b1d39fd3 291da9d4a9
commit 47fbbc94da
1 changed files with 1 additions and 1 deletions
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2
include/linux/mutex.h
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@ -185,7 +185,7 @@ extern void mutex_lock_io(struct mutex *lock);
# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
# define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock)
# define mutex_lock_nest_lock(lock, nest_lock) mutex_lock(lock)
# define mutex_lock_io_nested(lock, subclass) mutex_lock(lock)
# define mutex_lock_io_nested(lock, subclass) mutex_lock_io(lock)
#endif
/*