projects/linux·commit 1df377db

Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

1df377db · Greg Kroah-Hartman <[email protected]> · 2018-10-05 15:38:32 -07:00

Ingo writes:
  "locking fixes:

   A fix in the ww_mutex self-test that produces a scary splat, plus an
   updates to the maintained-filed patters in MAINTAINER."

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/ww_mutex: Fix runtime warning in the WW mutex selftest
  MAINTAINERS: Remove dead path from LOCKING PRIMITIVES entry
Commit
1df377db3d0131057fa33b4dcda05c3e341308ab
Parents
8b6b383c · e4a02ed2

Merge commit. Changes below are compared with the first parent: 8b6b383c.

Changes

2 files changed · +6 −5

FileStatusAddDelContent
MAINTAINERSmodified+0−1View file
kernel/locking/test-ww_mutex.cmodified+6−4View file

MAINTAINERS

View file
diff --git a/MAINTAINERS b/MAINTAINERS
index 2206504..e2d9749 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8599,7 +8599,6 @@ F: include/linux/spinlock*.h
F: arch/*/include/asm/spinlock*.h
F: include/linux/rwlock*.h
F: include/linux/mutex*.h
-F: arch/*/include/asm/mutex*.h
F: include/linux/rwsem*.h
F: arch/*/include/asm/rwsem.h
F: include/linux/seqlock.h

kernel/locking/test-ww_mutex.c

View file
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 0be047d..65a3b7e 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -260,7 +260,7 @@ static void test_cycle_work(struct work_struct *work)
{
struct test_cycle *cycle = container_of(work, typeof(*cycle), work);
struct ww_acquire_ctx ctx;
- int err;
+ int err, erra = 0;
ww_acquire_init(&ctx, &ww_class);
ww_mutex_lock(&cycle->a_mutex, &ctx);
@@ -270,17 +270,19 @@ static void test_cycle_work(struct work_struct *work)
err = ww_mutex_lock(cycle->b_mutex, &ctx);
if (err == -EDEADLK) {
+ err = 0;
ww_mutex_unlock(&cycle->a_mutex);
ww_mutex_lock_slow(cycle->b_mutex, &ctx);
- err = ww_mutex_lock(&cycle->a_mutex, &ctx);
+ erra = ww_mutex_lock(&cycle->a_mutex, &ctx);
}
if (!err)
ww_mutex_unlock(cycle->b_mutex);
- ww_mutex_unlock(&cycle->a_mutex);
+ if (!erra)
+ ww_mutex_unlock(&cycle->a_mutex);
ww_acquire_fini(&ctx);
- cycle->result = err;
+ cycle->result = err ?: erra;
}
static int __test_cycle(unsigned int nthreads)