linux-kernel - [PATCH v4 0/2] block: warn once for each partition in bio_check

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Date:   Tue, 28 Nov 2023 20:30:25 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     hch@....de, ming.lei@...hat.com, axboe@...nel.dk
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        yukuai3@...wei.com, yukuai1@...weicloud.com, yi.zhang@...wei.com,
        yangerkun@...wei.com
Subject: [PATCH v4 0/2] block: warn once for each partition in bio_check_ro()

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

Changes in v4:
 - remove the patch to add 'bd_flags', and add a new field 'bool
 bd_ro_warned' in patch 2. 'bd_flags' will be added once 'bd_inode' is
 removed from other thread.

Changes in v3:
 - add patch 1 from Ming, swap bd_inode layout with bd_openers and
 bd_size_lock;
 - change bd_flags from u32 to u16 in patch 2, prevent to affect layout of
 other fields;

Changes in v2:
 - don't use test/set_bit() for new field, because unsigned long will
 cause that some field can't be placed in the first cacheline(64 bytes),
 use unsigned int for new field and test/set/clear it like 'bio->bi_flags'.

Ming Lei (1):
  block: move .bd_inode into 1st cacheline of block_device

Yu Kuai (1):
  block: warn once for each partition in bio_check_ro()

 block/blk-core.c          | 14 +++++++++++---
 include/linux/blk_types.h |  4 +++-
 2 files changed, 14 insertions(+), 4 deletions(-)

-- 
2.39.2