lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20250901033220.42982-16-yukuai1@huaweicloud.com>
Date: Mon,  1 Sep 2025 11:32:20 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: hch@...radead.org,
	colyli@...nel.org,
	hare@...e.de,
	dlemoal@...nel.org,
	tieren@...as.com,
	axboe@...nel.dk,
	tj@...nel.org,
	josef@...icpanda.com,
	song@...nel.org,
	kmo@...erainc.com,
	satyat@...gle.com,
	ebiggers@...gle.com,
	neil@...wn.name,
	akpm@...ux-foundation.org
Cc: linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org,
	linux-raid@...r.kernel.org,
	yukuai3@...wei.com,
	yukuai1@...weicloud.com,
	yi.zhang@...wei.com,
	yangerkun@...wei.com,
	johnny.chenyi@...wei.com
Subject: [PATCH RFC v3 15/15] md/raid0: convert raid0_make_request() to use bio_submit_split_bioset()

From: Yu Kuai <yukuai3@...wei.com>

Currently, raid0_make_request() will remap the original bio to underlying
disks to prevent disordered IO. Now that bio_submit_split_bioset() will put
original bio to the head of current->bio_list, it's safe converting to use
this helper and bio will still be ordered.

CC: Jan Kara <jack@...e.cz>
Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/raid0.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 99f7839b4e96..857adc487962 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -607,19 +607,10 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
 		 : sector_div(sector, chunk_sects));
 
 	if (sectors < bio_sectors(bio)) {
-		struct bio *split = bio_split(bio, sectors, GFP_NOIO,
+		bio = bio_submit_split_bioset(bio, sectors,
 					      &mddev->bio_set);
-
-		if (IS_ERR(split)) {
-			bio->bi_status = errno_to_blk_status(PTR_ERR(split));
-			bio_endio(bio);
+		if (!bio)
 			return true;
-		}
-
-		bio_chain(split, bio);
-		trace_block_split(split, bio->bi_iter.bi_sector);
-		raid0_map_submit_bio(mddev, bio);
-		bio = split;
 	}
 
 	raid0_map_submit_bio(mddev, bio);
-- 
2.39.2


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ