linux-ext4 - [PATCH v2 0/2] block: enable per-cpu bio cache by default

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Message-Id: <20251107020557.10097-1-changfengnan@bytedance.com>
Date: Fri,  7 Nov 2025 10:05:55 +0800
From: Fengnan Chang <changfengnan@...edance.com>
To: axboe@...nel.dk,
	viro@...iv.linux.org.uk,
	brauner@...nel.org,
	jack@...e.cz,
	asml.silence@...il.com,
	willy@...radead.org,
	djwong@...nel.org,
	hch@...radead.org,
	ritesh.list@...il.com,
	linux-fsdevel@...r.kernel.org,
	io-uring@...r.kernel.org,
	linux-xfs@...r.kernel.org,
	linux-ext4@...r.kernel.org,
	linux-block@...r.kernel.org,
	ming.lei@...hat.com,
	linux-nvme@...ts.infradead.org
Cc: Fengnan Chang <changfengnan@...edance.com>
Subject: [PATCH v2 0/2] block: enable per-cpu bio cache by default

For now, per-cpu bio cache was only used in the io_uring + raw block
device, filesystem also can use this to improve performance.
After discussion in [1], we think it's better to enable per-cpu bio cache
by default.

v2:
enable per-cpu bio cache for passthru IO by default.

v1:
https://lore.kernel.org/linux-fsdevel/CAPFOzZs5mJ9Ts+TYkhioO8aAYfzevcgw7O3hjexFNb_tM+kEZA@mail.gmail.com/

[1] https://lore.kernel.org/linux-fsdevel/c4bc7c33-b1e1-47d1-9d22-b189c86c6c7d@gmail.com/



Fengnan Chang (2):
  block: use bio_alloc_bioset for passthru IO by default
  block: enable per-cpu bio cache by default

 block/bio.c               | 26 ++++++------
 block/blk-map.c           | 89 +++++++++++++++------------------------
 block/fops.c              |  4 --
 drivers/nvme/host/ioctl.c |  2 +-
 include/linux/fs.h        |  3 --
 io_uring/rw.c             |  1 -
 6 files changed, 48 insertions(+), 77 deletions(-)


base-commit: 4a0c9b3391999818e2c5b93719699b255be1f682
-- 
2.39.5 (Apple Git-154)