Btrfs fixes for 7.0-rc4

Hi,

please pull the following fixes. Some of them are for user actions that can lead to transaction abort and turn the filesystem read-only. Thanks.

- detect possible file name hash collision earlier so it does not lead to transaction abort

- handle b-tree leaf overflows when snapshotting a subvolume with set received UUID, leading to transaction abort

- in zoned mode, reorder relocation block group initialization after the transaction kthread start

- fix orphan cleanup state tracking of subvolume, this could lead to invalid dentries under some conditions

- add locking around updates of dynamic reclain state update

- in subpage mode, add missing RCU unlock when trying to releae extent buffer

- remap tree fixes:
- add missing description strings for the newly added remap tree
- properly update search key when iterating backrefs

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The following changes since commit f8db8009ea65297dba7786668d4561f6dbd99678:

btrfs: check block group lookup in remove_range_from_remap_tree() (2026-02-26 15:03:29 +0100)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git tags/for-7.0-rc3-tag

for you to fetch changes up to 0749cab6174dc035b1628fb6db03abf758cfda6f:

btrfs: remove duplicated definition of btrfs_printk_in_rcu() (2026-03-03 17:20:51 +0100)

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Bart Van Assche (1):
btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()

Boris Burkov (1):
btrfs: set BTRFS_ROOT_ORPHAN_CLEANUP during subvol create

Filipe Manana (6):
btrfs: fix transaction abort on file creation due to name hash collision
btrfs: fix transaction abort when snapshotting received subvolumes
btrfs: fix transaction abort on set received ioctl due to item overflow
btrfs: abort transaction on failure to update root in the received subvol ioctl
btrfs: remove unnecessary transaction abort in the received subvol ioctl
btrfs: remove duplicated definition of btrfs_printk_in_rcu()

Johannes Thumshirn (1):
btrfs: zoned: move btrfs_zoned_reserve_data_reloc_bg() after kthread start

Mark Harmstone (2):
btrfs: print-tree: add remap tree definitions
btrfs: read key again after incrementing slot in move_existing_remaps()

Sun YangKai (1):

      btrfs: hold space_info->lock when clearing periodic reclaim ready

 fs/btrfs/disk-io.c     |  7 ++++++-
 fs/btrfs/extent_io.c   |  1 +
 fs/btrfs/inode.c       | 19 +++++++++++++++++++
 fs/btrfs/ioctl.c       | 32 ++++++++++++++++++++++++++++----
 fs/btrfs/messages.h    |  3 ---
 fs/btrfs/print-tree.c  | 10 ++++++++++
 fs/btrfs/relocation.c  |  2 ++
 fs/btrfs/space-info.c  |  5 ++++-
 fs/btrfs/transaction.c | 16 ++++++++++++++++
 fs/btrfs/uuid-tree.c   | 38 ++++++++++++++++++++++++++++++++++++++
 fs/btrfs/uuid-tree.h   |  2 ++
 11 files changed, 126 insertions(+), 9 deletions(-)