From: Xie Yongji <xieyongji@bytedance.com>
To: axboe@kernel.dk, josef@toxicpanda.com, hch@infradead.org
Cc: linux-block@vger.kernel.org, nbd@other.debian.org,
yixingchen@bytedance.com
Subject: [PATCH 0/3] Add invalidate_gendisk() helper for drivers to invalidate the gendisk
Date: Mon, 13 Sep 2021 19:25:54 +0800 [thread overview]
Message-ID: <20210913112557.191-1-xieyongji@bytedance.com> (raw)
This series comes from Christoph Hellwig's suggestion [1]. Some block
device drivers such as loop driver and nbd driver need to invalidate
the gendisk when the backend is detached so that the gendisk can be
reused by the new backend. Now the invalidation is done in device
driver with their own ways. To avoid code duplication and hide
some internals of the implementation, this series adds a block layer
helper and makes both loop driver and nbd driver use it.
[1] https://lore.kernel.org/all/YTmqJHd7YWAQ2lZ7@infradead.org/
Xie Yongji (3):
block: Add invalidate_gendisk() helper to invalidate the gendisk
loop: Use invalidate_gendisk() helper to invalidate gendisk
nbd: Use invalidate_gendisk() helper on disconnect
block/genhd.c | 21 +++++++++++++++++++++
drivers/block/loop.c | 6 +-----
drivers/block/nbd.c | 12 +++---------
include/linux/genhd.h | 1 +
4 files changed, 26 insertions(+), 14 deletions(-)
--
2.11.0
next reply other threads:[~2021-09-13 11:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-13 11:25 Xie Yongji [this message]
2021-09-13 11:25 ` [PATCH 1/3] block: Add invalidate_gendisk() helper to invalidate the gendisk Xie Yongji
2021-09-13 12:31 ` Christoph Hellwig
2021-09-13 13:16 ` Yongji Xie
2021-09-13 11:25 ` [PATCH 2/3] loop: Use invalidate_gendisk() helper to invalidate gendisk Xie Yongji
2021-09-13 12:34 ` Christoph Hellwig
2021-09-13 13:14 ` Yongji Xie
2021-09-13 11:25 ` [PATCH 3/3] nbd: Use invalidate_gendisk() helper on disconnect Xie Yongji
2021-09-13 12:41 ` Christoph Hellwig
2021-09-13 13:04 ` Yongji Xie
2021-09-13 15:32 ` Christoph Hellwig
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