From: Kaitao Cheng <redacted>
A later change will make list_for_each_entry() cache the next element
before entering the loop body. stress_reorder_work() can move list
entries while handling wound/wait locking conflicts and then continue
from the adjusted cursor.
Keep the list walk open-coded so the loop step observes the cursor
selected by the body. This preserves the existing stress-test traversal
semantics and prepares the code for the list iterator update.
Signed-off-by: Kaitao Cheng <redacted>
---
kernel/locking/test-ww_mutex.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 838d631544ed..08a6ab5ac041 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -519,7 +519,9 @@ static void stress_reorder_work(struct work_struct *work)
do {
ww_acquire_init(&ctx, stress->class);
- list_for_each_entry(ll, &locks, link) {
+ for (ll = list_first_entry(&locks, typeof(*ll), link);
+ !list_entry_is_head(ll, &locks, link);
+ ll = list_next_entry(ll, link)) {
err = ww_mutex_lock(ll->lock, &ctx);
if (!err)
continue;--
2.43.0