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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-09-03 10:40:01 +0200 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2021-09-17 15:08:44 +0200 |
| commit | 2507003a1d10917c9158077bf6030719d02c941e (patch) | |
| tree | 0e67fa9faffc4191d9d328dc41a161ccaf0d1221 /include/linux/lockdep_types.h | |
| parent | kernel/locking: Add context to ww_mutex_trylock() (diff) | |
| download | wireguard-linux-2507003a1d10917c9158077bf6030719d02c941e.tar.xz wireguard-linux-2507003a1d10917c9158077bf6030719d02c941e.zip | |
lockdep: Let lock_is_held_type() detect recursive read as read
lock_is_held_type(, 1) detects acquired read locks. It only recognized
locks acquired with lock_acquire_shared(). Read locks acquired with
lock_acquire_shared_recursive() are not recognized because a `2' is
stored as the read value.
Rework the check to additionally recognise lock's read value one and two
as a read held lock.
Fixes: e918188611f07 ("locking: More accurate annotations for read_lock()")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20210903084001.lblecrvz4esl4mrr@linutronix.de
Diffstat (limited to 'include/linux/lockdep_types.h')
0 files changed, 0 insertions, 0 deletions