linux-kernel - [PATCH 0/5] brd: discard bugfix

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Message-Id: <20250418093826.3149293-1-yukuai1@huaweicloud.com>
Date: Fri, 18 Apr 2025 17:38:21 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: axboe@...nel.dk,
	kbusch@...nel.org
Cc: linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	yukuai3@...wei.com,
	yukuai1@...weicloud.com,
	yi.zhang@...wei.com,
	yangerkun@...wei.com,
	johnny.chenyi@...wei.com
Subject: [PATCH 0/5] brd: discard bugfix

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

The backgroud is that our customer is using brd for dm-thinpool, and
they want brd to support discard. So today I'm reviewing the commit
9ead7efc6f3f ("brd: implement discard support") and try to backport it
to downstream kernel. Those problems are found while backporting, they
are not tested yet.

Yu Kuai (5):
  brd: fix oops if write concurrent with discard
  brd: synchronize using page and free page with rcu
  brd: fix aligned_sector from brd_do_discard()
  brd: fix discard end sector
  brd: zero data for discard that is not aligned to page

 drivers/block/brd.c | 76 ++++++++++++++++++++++++++++++++-------------
 1 file changed, 55 insertions(+), 21 deletions(-)

-- 
2.39.2