block layer · Maintained

Maintainers

• M Jens Axboe <axboe@kernel.dk>

Paths

• F Documentation/ABI/stable/sysfs-block
• F Documentation/block/
• F block/
• F drivers/block/
• F include/linux/bio.h
• F include/linux/blk*
• F include/uapi/linux/blk*
• F include/uapi/linux/ioprio.h
• F kernel/trace/blktrace.c
• F lib/sbitmap.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v2 17/18] iomap: pass iomap_next_fn directly instead of struct iomap_ops
  2026-07-01 00:12 · 0 replies in 7d · Joanne Koong <joannelkoong@gmail.com>

Active reviewers (last 30 days)

• Jan Kara <jack@suse.cz>
  1 attestation (1 Reviewed-by) · last on 2026-06-16

Recent patches

Most-recent 30 patches in this subsystem on linux-btrfs (capped at 30), ordered by date desc.

• HOTtoday [PATCH v2 17/18] iomap: pass iomap_next_fn directly instead of struct iomap_ops
  2026-07-01 · Joanne Koong <joannelkoong@gmail.com>
• DORMANTno replies Re: [PATCH v4] loop: Fix NULL pointer dereference in lo_rw_aio()
  2026-06-20 · Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
• COOLING14d [PATCH v2 2/5] block: split bdev_yield_claim() out of bdev_fput()
  2026-06-16 · Christian Brauner <brauner@kernel.org>
• COOLING14d REVIEWED: 9 (9M) [PATCH v2 1/5] block: allow making a block device unfreezable
  2026-06-16 · Christian Brauner <brauner@kernel.org>
• WARM2d [PATCH v4 2/3] block: respect iov_iter::nofault flag in bio_iov_iter_bounce_write()
  2026-06-16 · Qu Wenruo <hidden>
• WARM2d [PATCH v4 1/3] block: revert the iov_iter after a short copy in bio_iov_iter_bounce_write()
  2026-06-16 · Qu Wenruo <hidden>
• COLD17d [PATCH RFC 3/6] block: split bdev_yield_claim() out of bdev_fput()
  2026-06-15 · Christian Brauner <brauner@kernel.org>
• COLD17d [PATCH RFC 2/6] block: allow making a block device unfreezable
  2026-06-15 · Christian Brauner <brauner@kernel.org>
• COOLING12d Re: [PATCH v4] loop: Fix NULL pointer dereference in lo_rw_aio()
  2026-06-13 · Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
• COLD16d [PATCH v3 2/4] block: respect iov_iter::nofault flag in bio_iov_iter_bounce_write()
  2026-06-12 · Qu Wenruo <hidden>
• COLD16d [PATCH v3 1/4] block: revert the iov_iter after a short copy in bio_iov_iter_bounce_write()
  2026-06-12 · Qu Wenruo <hidden>
• COOLING12d [PATCH v4] loop: Fix NULL pointer dereference in lo_rw_aio()
  2026-06-07 · Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
• COLD22d [PATCH v7 05/43] blk-crypto: add a process bio callback
  2026-05-13 · Daniel Vacek <hidden>
• COLD45d [PATCH 09/12] swap: push down setting sis->bdev into ->swap_activate
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• COLD45d [PATCH 07/12] swap,block: limit swap file size to device size
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• COLD45d [PATCH 06/12] swap,block: move the block device swapon code into block/fops.c
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• STALE106d [PATCH v2] block: reject zero length in bio_add_page()
  2026-03-17 · Qu Wenruo <hidden>
• STALE108d [PATCH] block: reject zero length in bio_add_page()
  2026-03-13 · Qu Wenruo <hidden>
• STALE77d [PATCH 54/61] aoe: Prefer IS_ERR_OR_NULL over manual NULL check
  2026-03-10 · Philipp Hahn <hidden>
• STALE70d [PATCH v6 05/43] blk-crypto: add a process_bio callback
  2026-02-06 · Daniel Vacek <hidden>
• STALE193d [RFC v2 17/17] bio: add bio_endio_status
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 15/17] bio: never set bi_status to BLK_STS_OK during completion
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 14/17] bio: switch to bio_set_status in submit_bio_noacct
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 10/17] block: optimize blk_status <=> errno conversion
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 11/17] bio: bio_set_status from non-zero errno
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 09/17] block: turn blk_errors array into a macro
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 08/17] block: fix blk_status_to_{errno,str} inconsistency
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 06/17] bio: do not check bio->bi_status before assigning to it
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 05/17] bio: use bio_set_status for BLK_STS_* status codes
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 04/17] bio: add bio_set_status
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE193d REVIEWED: 4 (4M) [RFC v2 02/17] bio: rename bio_chain arguments
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com> · 1 Reviewed-by
• STALE193d REVIEWED: 4 (4M) [RFC v2 03/17] bio: use bio_io_error more often
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com> · 1 Reviewed-by
• COOLING14d REVIEWED: 9 (9M) [PATCH v2 1/5] block: allow making a block device unfreezable
  2026-06-16 · Christian Brauner <brauner@kernel.org> · 1 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE195d [RFC 04/12] bio: use bio_set_errno in more places
  2025-12-08 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE195d [RFC 07/12] bio: use bio_set_status for BLK_STS_* status codes
  2025-12-08 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE195d [RFC 08/12] bio: use bio_set_status in some more places
  2025-12-08 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE195d [RFC 09/12] bio: switch to bio_set_status in submit_bio_noacct
  2025-12-08 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE195d [RFC 10/12] bio: never set bi_status to BLK_STS_OK during completion
  2025-12-08 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 04/17] bio: add bio_set_status
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 05/17] bio: use bio_set_status for BLK_STS_* status codes
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 06/17] bio: do not check bio->bi_status before assigning to it
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 08/17] block: fix blk_status_to_{errno,str} inconsistency
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>
• STALE193d [RFC v2 09/17] block: turn blk_errors array into a macro
  2025-12-21 · Andreas Gruenbacher <agruenba@redhat.com>