mutex - Atomicity guaranteed on "lock" methods in Linux? -

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We know that the following kernel methods in Linux are allowed to apply different locking mechanisms on shared data. But, does Linux guarantee its atomicity in its own way? With the exception of general and reader-author spin lock methods, who can not sleep, will not it be tuberculosis if there is a thread of execution previously, whereas it has been partially executed in other ways described below?

Spin Lock Methods 

  spin_lock (); Spin_lock_irq (); Spin_lock_irqsave (); Spin_unlock (); Spin_unlock_irq (); Spin_unlock_irqrestore (); Spin_lock_init (); Spin_trylock (); Spin_is_locked ();

Reader-author spin lock methods 

  read_lock (); Read_lock_irq (); Read_lock_irqsave (); Read_unlock (); Read_unlock_irq (); Read_unlock_ irqrestore (); Write_lock (); Write_lock_irq (); Write_lock_irqsave (); Write_unlock (); Write_unlock_irq (); Write_unlock_irqrestore (); Write_trylock (); Rwlock_init ();

Semaphore methods 

  sema_init (); Init_MUTEX (); Init_MUTEX_LOCKED (); Down_interruptible (); bottom (); Down_trylock (); Up ();

Reader-author semaphore methods 

  init_rwsem (); Down_read (); Up_read (); Down_write (); Up_write (); Down_read_trylock (); Down_write_trylock (); Downgrade_write ();

Mute X methods 

  mutex_lock (); Mutex_unlock (); Mutex_trylock (); Mutex_is_locked ();

Convertible Convertible Methods 

  init_completion (); Wait_for_completion (); complete();

If these tasks were not atoms in relation to the lock, then they would not work at all . And the last time I saw, my Linux worked.

Most of these tasks actually disable promotions while doing their own content.


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