linux-kernel - [PATCH] blk-mq: fix alignment mismatch.

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Date:   Tue, 30 Mar 2021 16:02:49 -0700
From:   Jian Cai <jiancai@...gle.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     cjdb@...gle.com, manojgupta@...gle.com, llozano@...gle.com,
        clang-built-linux@...glegroups.com, Jian Cai <jiancai@...gle.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Jens Axboe <axboe@...nel.dk>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] blk-mq: fix alignment mismatch.

This fixes the mismatch of alignments between csd and its use as an
argument to smp_call_function_single_async, which causes build failure
when -Walign-mismatch in Clang is used.

Link:
http://crrev.com/c/1193732

Suggested-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Jian Cai <jiancai@...gle.com>
---
 include/linux/blkdev.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bc6bc8383b43..3b92330d95ad 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -231,7 +231,7 @@ struct request {
 	unsigned long deadline;
 
 	union {
-		struct __call_single_data csd;
+		call_single_data_t csd;
 		u64 fifo_time;
 	};
 
-- 
2.31.0.291.g576ba9dcdaf-goog