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Message-Id: <20250901033220.42982-1-yukuai1@huaweicloud.com>
Date: Mon, 1 Sep 2025 11:32:05 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: hch@...radead.org,
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Cc: linux-block@...r.kernel.org,
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Subject: [PATCH RFC v3 00/15] block: fix disordered IO in the case recursive split
From: Yu Kuai <yukuai3@...wei.com>
Changes in v3:
- add patch 1,2 to cleanup bio_issue;
- add patch 3,4 to fix missing processing for split bio first;
- bypass zoned device in patch 14;
Changes in v2:
- export a new helper bio_submit_split_bioset() instead of
export bio_submit_split() directly;
- don't set no merge flag in the new helper;
- add patch 7 and patch 10;
- add patch 8 to skip bio checks for resubmitting split bio;
patch 1,2 cleanup bio_issue;
patch 3,4 to fix missing processing for split bio;
patch 5 export a bio split helper;
patch 6-12 unify bio split code;
path 13,14 convert the helper to insert split bio to the head of current
bio list;
patch 15 is a follow cleanup for raid0;
This set is just test for raid5 for now, see details in patch 9;
Yu Kuai (15):
block: cleanup bio_issue
block: add QUEUE_FLAG_BIO_ISSUE
md: fix mssing blktrace bio split events
blk-crypto: fix missing processing for split bio
block: factor out a helper bio_submit_split_bioset()
md/raid0: convert raid0_handle_discard() to use
bio_submit_split_bioset()
md/raid1: convert to use bio_submit_split_bioset()
md/raid10: add a new r10bio flag R10BIO_Returned
md/raid10: convert read/write to use bio_submit_split_bioset()
md/raid5: convert to use bio_submit_split_bioset()
md/md-linear: convert to use bio_submit_split_bioset()
blk-crypto: convert to use bio_submit_split_bioset()
block: skip unnecessary checks for split bio
block: fix disordered IO in the case recursive split
md/raid0: convert raid0_make_request() to use
bio_submit_split_bioset()
block/bio.c | 2 +-
block/blk-cgroup.h | 5 ++-
block/blk-core.c | 35 +++++++++++++++++----
block/blk-crypto-fallback.c | 15 +++------
block/blk-iolatency.c | 15 +++------
block/blk-merge.c | 63 ++++++++++++++++++++++++-------------
block/blk-mq-debugfs.c | 1 +
block/blk-throttle.c | 2 +-
block/blk.h | 45 ++------------------------
drivers/md/md-linear.c | 11 ++-----
drivers/md/raid0.c | 30 ++++++------------
drivers/md/raid1.c | 38 ++++++++--------------
drivers/md/raid1.h | 4 ++-
drivers/md/raid10.c | 54 ++++++++++++++-----------------
drivers/md/raid10.h | 2 ++
drivers/md/raid5.c | 10 +++---
include/linux/blk_types.h | 7 ++---
include/linux/blkdev.h | 3 ++
18 files changed, 152 insertions(+), 190 deletions(-)
--
2.39.2
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