Commit-ID: 51587bcf31d070119d37de6103543c807f5ccdb3 Gitweb: http://git.kernel.org/tip/51587bcf31d070119d37de6103543c807f5ccdb3 Author: Davidlohr Bueso <d...@stgolabs.net> AuthorDate: Mon, 19 Jan 2015 17:39:21 -0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 4 Feb 2015 07:57:33 +0100
locking/mutex: Explicitly mark task as running after wakeup By the time we wake up and get the lock after being asleep in the slowpath, we better be running. As good practice, be explicit about this and avoid any mischief. Signed-off-by: Davidlohr Bueso <dbu...@suse.de> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: "Paul E. McKenney" <paul...@linux.vnet.ibm.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Link: http://lkml.kernel.org/r/1421717961.4903.11.ca...@stgolabs.net Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/locking/mutex.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index c67a60b..5740706 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -587,6 +587,8 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, schedule_preempt_disabled(); spin_lock_mutex(&lock->wait_lock, flags); } + __set_task_state(task, TASK_RUNNING); + mutex_remove_waiter(lock, &waiter, current_thread_info()); /* set it to 0 if there are no waiters left: */ if (likely(list_empty(&lock->wait_list))) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
