Messages in this thread Patch in this message |  | | Date | Tue, 11 Feb 2020 12:48:21 -0000 | From | "tip-bot2 for Davidlohr Bueso" <> | Subject | [tip: locking/core] locking/percpu-rwsem: Add might_sleep() for writer locking |
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The following commit has been merged into the locking/core branch of tip:
Commit-ID: 41f0e29190ac9e38099a37abd1a8a4cb1dc21233 Gitweb: https://git.kernel.org/tip/41f0e29190ac9e38099a37abd1a8a4cb1dc21233 Author: Davidlohr Bueso <dave@stgolabs.net> AuthorDate: Tue, 07 Jan 2020 17:33:04 -08:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Tue, 11 Feb 2020 13:11:02 +01:00
locking/percpu-rwsem: Add might_sleep() for writer locking
We are missing this annotation in percpu_down_write(). Correct this.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Waiman Long <longman@redhat.com> Link: https://lkml.kernel.org/r/20200108013305.7732-1-dave@stgolabs.net --- kernel/locking/percpu-rwsem.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c index 8048a9a..183a3aa 100644 --- a/kernel/locking/percpu-rwsem.c +++ b/kernel/locking/percpu-rwsem.c @@ -212,6 +212,7 @@ static bool readers_active_check(struct percpu_rw_semaphore *sem) void percpu_down_write(struct percpu_rw_semaphore *sem) { + might_sleep(); rwsem_acquire(&sem->dep_map, 0, 0, _RET_IP_); /* Notify readers to take the slow path. */
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