The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable@xxxxxxxxxxxxxxx>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 42fac187b5c746227c92d024f1caf33bc1d337e4 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable@xxxxxxxxxxxxxxx>' --in-reply-to '2024081931-slot-improving-a44a@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: 42fac187b5c7 ("btrfs: check delayed refs when we're checking if a ref exists") e094f48040cd ("btrfs: change root->root_key.objectid to btrfs_root_id()") 44cc2e38e67b ("btrfs: stop referencing btrfs_delayed_data_ref directly") cf4f04325b2b ("btrfs: move ->parent and ->ref_root into btrfs_delayed_ref_node") 12390e42b69d ("btrfs: rename ->len to ->num_bytes in btrfs_ref") 1bff6d4f8737 ("btrfs: simplify delayed ref tracepoints") 0ea4703cc27e ("btrfs: move ref specific initialization into init_delayed_ref_common") 0509cc56619d ("btrfs: initialize btrfs_delayed_ref_head with btrfs_ref") da3c54854197 ("btrfs: pass btrfs_ref to init_delayed_ref_common") f2e69a77aa51 ("btrfs: move ref_root into btrfs_ref") 4d09b4e942bc ("btrfs: do not use a function to initialize btrfs_ref") d3fbb00f5e21 ("btrfs: embed data_ref and tree_ref in btrfs_delayed_ref_node") 0eea355fc0f4 ("btrfs: add a helper to get the delayed ref node from the data/tree ref") 6de3595473b0 ("btrfs: compression: add error handling for missed page cache") 01b69bf9906b ("btrfs: convert put_file_data() to folios") 073bda7a5417 ("btrfs: zoned: add ASSERT and WARN for EXTENT_BUFFER_ZONED_ZEROOUT handling") 141fb8cd206a ("btrfs: qgroup: correctly model root qgroup rsv in convert") ef5a05c55704 ("btrfs: remove SLAB_MEM_SPREAD flag use") 06c9564980f1 ("btrfs: use KMEM_CACHE() to create btrfs_free_space cache") b2c7d55e4c4c ("btrfs: use KMEM_CACHE() to create delayed ref caches") thanks, greg k-h ------------------ original commit in Linus's tree ------------------