linux-kernel - [PATCH] loop: devirtualise ki

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Message-Id: <5e84ffb95a722c510674a319d9223a1add42ef14.1610207408.git.asml.silence@gmail.com>
Date:   Sat,  9 Jan 2021 15:51:38 +0000
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] loop: devirtualise ki_complete call

lo_rw_aio() knows what iocb.ki_complete it set, so instead of an
expensive indirect call it can call lo_rw_aio_complete() directly.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 drivers/block/loop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index e5ff328f0917..113d87f3b194 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -588,7 +588,7 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd,
 	kthread_associate_blkcg(NULL);
 
 	if (ret != -EIOCBQUEUED)
-		cmd->iocb.ki_complete(&cmd->iocb, ret, 0);
+		lo_rw_aio_complete(&cmd->iocb, ret, 0);
 	return 0;
 }
 
-- 
2.24.0