tjh.dev / kernel
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locking/mutex: Fix non debug version of mutex_lock_io_nested()

If CONFIG_DEBUG_LOCK_ALLOC=n then mutex_lock_io_nested() maps to
mutex_lock() which is clearly wrong because mutex_lock() lacks the
io_schedule_prepare()/finish() invocations.

Map it to mutex_lock_io().

Fixes: f21860bac05b ("locking/mutex, sched/wait: Fix the mutex_lock_io_nested() define")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/878s6fshii.fsf@nanos.tec.linutronix.de

authored by Thomas Gleixner and committed by Ingo Molnar 291da9d4 38c93587

options
unified split
Changed files
+1 -1
include
linux
mutex.h
+1 -1
include/linux/mutex.h
··· 185 185 # define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock) 186 186 # define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock) 187 187 # define mutex_lock_nest_lock(lock, nest_lock) mutex_lock(lock) 188 - # define mutex_lock_io_nested(lock, subclass) mutex_lock(lock) 188 + # define mutex_lock_io_nested(lock, subclass) mutex_lock_io(lock) 189 189 #endif 190 190 191 191 /*