linux-ext4 - [PATCH RFC v7 21/23] dept: Apply timeout consideration to hashed-waitqueue wait

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Message-Id: <1673235231-30302-22-git-send-email-byungchul.park@lge.com>
Date:   Mon,  9 Jan 2023 12:33:49 +0900
From:   Byungchul Park <byungchul.park@....com>
To:     linux-kernel@...r.kernel.org
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Subject: [PATCH RFC v7 21/23] dept: Apply timeout consideration to hashed-waitqueue wait

Now that CONFIG_DEPT_AGGRESSIVE_TIMEOUT_WAIT was introduced, apply the
consideration to hashed-waitqueue wait, assuming an input 'ret' in
___wait_var_event() macro is used as a timeout value.

Signed-off-by: Byungchul Park <byungchul.park@....com>
---
 include/linux/wait_bit.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/wait_bit.h b/include/linux/wait_bit.h
index bad30ba..b504815 100644
--- a/include/linux/wait_bit.h
+++ b/include/linux/wait_bit.h
@@ -247,7 +247,10 @@ struct wait_bit_queue_entry {
 	struct wait_bit_queue_entry __wbq_entry;			\
 	long __ret = ret; /* explicit shadow */				\
 									\
-	sdt_might_sleep_weak(NULL);					\
+	if (!__ret || __ret == MAX_SCHEDULE_TIMEOUT)			\
+		sdt_might_sleep_weak(NULL);				\
+	else								\
+		sdt_might_sleep_weak_timeout(NULL);			\
 	init_wait_var_entry(&__wbq_entry, var,				\
 			    exclusive ? WQ_FLAG_EXCLUSIVE : 0);		\
 	for (;;) {							\
-- 
1.9.1