linux-kernel - [PATCH v2 10/11] md/raid0: align bio to io

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Message-ID: <20251124063203.1692144-11-yukuai@fnnas.com>
Date: Mon, 24 Nov 2025 14:32:02 +0800
From: Yu Kuai <yukuai@...as.com>
To: song@...nel.org,
	linux-raid@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	filippo@...ian.org,
	colyli@...as.com,
	yukuai@...as.com
Subject: [PATCH v2 10/11] md/raid0: align bio to io_opt

The impact is not so significant for raid0 compared to raid5, however
it's still more appropriate to issue IOs evenly to underlying disks.

Signed-off-by: Yu Kuai <yukuai@...as.com>
---
 drivers/md/raid0.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 01cce0c3eab7..c94c6f78767f 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -29,8 +29,7 @@ module_param(default_layout, int, 0644);
 	 (1L << MD_HAS_PPL) |		\
 	 (1L << MD_HAS_MULTIPLE_PPLS) |	\
 	 (1L << MD_FAILLAST_DEV) |	\
-	 (1L << MD_SERIALIZE_POLICY) |	\
-	 (1L << MD_BIO_ALIGN))
+	 (1L << MD_SERIALIZE_POLICY))
 
 /*
  * inform the user of the raid configuration
@@ -391,6 +390,8 @@ static int raid0_set_limits(struct mddev *mddev)
 	err = mddev_stack_rdev_limits(mddev, &lim, MDDEV_STACK_INTEGRITY);
 	if (err)
 		return err;
+
+	md_config_align_limits(mddev, &lim);
 	return queue_limits_set(mddev->gendisk->queue, &lim);
 }
 
-- 
2.51.0